1 // This file is Copyright its original authors, visible in version control
4 // This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
5 // or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
6 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
7 // You may not use this file except in accordance with one or both of these
10 //! Tests that test standing up a network of ChannelManagers, creating channels, sending
11 //! payments/messages between them, and often checking the resulting ChannelMonitors are able to
12 //! claim outputs on-chain.
17 use chain::channelmonitor;
18 use chain::channelmonitor::{ChannelMonitor, CLTV_CLAIM_BUFFER, LATENCY_GRACE_PERIOD_BLOCKS, ANTI_REORG_DELAY};
19 use chain::transaction::OutPoint;
20 use chain::keysinterface::{KeysInterface, BaseSign};
21 use ln::{PaymentPreimage, PaymentSecret, PaymentHash};
22 use ln::channel::{COMMITMENT_TX_BASE_WEIGHT, COMMITMENT_TX_WEIGHT_PER_HTLC};
23 use ln::channelmanager::{ChannelManager, ChannelManagerReadArgs, RAACommitmentOrder, PaymentSendFailure, BREAKDOWN_TIMEOUT, MIN_CLTV_EXPIRY_DELTA};
24 use ln::channel::{Channel, ChannelError};
25 use ln::{chan_utils, onion_utils};
26 use routing::router::{Route, RouteHop, get_route};
27 use ln::features::{ChannelFeatures, InitFeatures, InvoiceFeatures, NodeFeatures};
29 use ln::msgs::{ChannelMessageHandler,RoutingMessageHandler,HTLCFailChannelUpdate, ErrorAction};
30 use util::enforcing_trait_impls::EnforcingSigner;
31 use util::{byte_utils, test_utils};
32 use util::events::{Event, MessageSendEvent, MessageSendEventsProvider};
33 use util::errors::APIError;
34 use util::ser::{Writeable, ReadableArgs};
35 use util::config::UserConfig;
37 use bitcoin::hashes::sha256d::Hash as Sha256dHash;
38 use bitcoin::hash_types::{Txid, BlockHash};
39 use bitcoin::blockdata::block::{Block, BlockHeader};
40 use bitcoin::blockdata::script::Builder;
41 use bitcoin::blockdata::opcodes;
42 use bitcoin::blockdata::constants::genesis_block;
43 use bitcoin::network::constants::Network;
45 use bitcoin::hashes::sha256::Hash as Sha256;
46 use bitcoin::hashes::Hash;
48 use bitcoin::secp256k1::{Secp256k1, Message};
49 use bitcoin::secp256k1::key::{PublicKey,SecretKey};
54 use alloc::collections::BTreeSet;
55 use std::collections::{HashMap, HashSet};
56 use core::default::Default;
57 use std::sync::{Arc, Mutex};
59 use ln::functional_test_utils::*;
60 use ln::chan_utils::CommitmentTransaction;
61 use ln::msgs::OptionalField::Present;
64 fn test_insane_channel_opens() {
65 // Stand up a network of 2 nodes
66 let chanmon_cfgs = create_chanmon_cfgs(2);
67 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
68 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
69 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
71 // Instantiate channel parameters where we push the maximum msats given our
73 let channel_value_sat = 31337; // same as funding satoshis
74 let channel_reserve_satoshis = Channel::<EnforcingSigner>::get_holder_selected_channel_reserve_satoshis(channel_value_sat);
75 let push_msat = (channel_value_sat - channel_reserve_satoshis) * 1000;
77 // Have node0 initiate a channel to node1 with aforementioned parameters
78 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_sat, push_msat, 42, None).unwrap();
80 // Extract the channel open message from node0 to node1
81 let open_channel_message = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
83 // Test helper that asserts we get the correct error string given a mutator
84 // that supposedly makes the channel open message insane
85 let insane_open_helper = |expected_error_str: &str, message_mutator: fn(msgs::OpenChannel) -> msgs::OpenChannel| {
86 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &message_mutator(open_channel_message.clone()));
87 let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
88 assert_eq!(msg_events.len(), 1);
89 let expected_regex = regex::Regex::new(expected_error_str).unwrap();
90 if let MessageSendEvent::HandleError { ref action, .. } = msg_events[0] {
92 &ErrorAction::SendErrorMessage { .. } => {
93 nodes[1].logger.assert_log_regex("lightning::ln::channelmanager".to_string(), expected_regex, 1);
95 _ => panic!("unexpected event!"),
97 } else { assert!(false); }
100 use ln::channel::MAX_FUNDING_SATOSHIS;
101 use ln::channelmanager::MAX_LOCAL_BREAKDOWN_TIMEOUT;
103 // Test all mutations that would make the channel open message insane
104 insane_open_helper(format!("Funding must be smaller than {}. It was {}", MAX_FUNDING_SATOSHIS, MAX_FUNDING_SATOSHIS).as_str(), |mut msg| { msg.funding_satoshis = MAX_FUNDING_SATOSHIS; msg });
106 insane_open_helper("Bogus channel_reserve_satoshis", |mut msg| { msg.channel_reserve_satoshis = msg.funding_satoshis + 1; msg });
108 insane_open_helper(r"push_msat \d+ was larger than funding value \d+", |mut msg| { msg.push_msat = (msg.funding_satoshis - msg.channel_reserve_satoshis) * 1000 + 1; msg });
110 insane_open_helper("Peer never wants payout outputs?", |mut msg| { msg.dust_limit_satoshis = msg.funding_satoshis + 1 ; msg });
112 insane_open_helper(r"Bogus; channel reserve \(\d+\) is less than dust limit \(\d+\)", |mut msg| { msg.dust_limit_satoshis = msg.channel_reserve_satoshis + 1; msg });
114 insane_open_helper(r"Minimum htlc value \(\d+\) was larger than full channel value \(\d+\)", |mut msg| { msg.htlc_minimum_msat = (msg.funding_satoshis - msg.channel_reserve_satoshis) * 1000; msg });
116 insane_open_helper("They wanted our payments to be delayed by a needlessly long period", |mut msg| { msg.to_self_delay = MAX_LOCAL_BREAKDOWN_TIMEOUT + 1; msg });
118 insane_open_helper("0 max_accepted_htlcs makes for a useless channel", |mut msg| { msg.max_accepted_htlcs = 0; msg });
120 insane_open_helper("max_accepted_htlcs was 484. It must not be larger than 483", |mut msg| { msg.max_accepted_htlcs = 484; msg });
124 fn test_async_inbound_update_fee() {
125 let chanmon_cfgs = create_chanmon_cfgs(2);
126 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
127 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
128 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
129 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
130 let logger = test_utils::TestLogger::new();
131 let channel_id = chan.2;
134 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
138 // send (1) commitment_signed -.
139 // <- update_add_htlc/commitment_signed
140 // send (2) RAA (awaiting remote revoke) -.
141 // (1) commitment_signed is delivered ->
142 // .- send (3) RAA (awaiting remote revoke)
143 // (2) RAA is delivered ->
144 // .- send (4) commitment_signed
145 // <- (3) RAA is delivered
146 // send (5) commitment_signed -.
147 // <- (4) commitment_signed is delivered
149 // (5) commitment_signed is delivered ->
151 // (6) RAA is delivered ->
153 // First nodes[0] generates an update_fee
154 nodes[0].node.update_fee(channel_id, get_feerate!(nodes[0], channel_id) + 20).unwrap();
155 check_added_monitors!(nodes[0], 1);
157 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
158 assert_eq!(events_0.len(), 1);
159 let (update_msg, commitment_signed) = match events_0[0] { // (1)
160 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
161 (update_fee.as_ref(), commitment_signed)
163 _ => panic!("Unexpected event"),
166 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
168 // ...but before it's delivered, nodes[1] starts to send a payment back to nodes[0]...
169 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[0]);
170 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
171 nodes[1].node.send_payment(&get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 40000, TEST_FINAL_CLTV, &logger).unwrap(), our_payment_hash, &Some(our_payment_secret)).unwrap();
172 check_added_monitors!(nodes[1], 1);
174 let payment_event = {
175 let mut events_1 = nodes[1].node.get_and_clear_pending_msg_events();
176 assert_eq!(events_1.len(), 1);
177 SendEvent::from_event(events_1.remove(0))
179 assert_eq!(payment_event.node_id, nodes[0].node.get_our_node_id());
180 assert_eq!(payment_event.msgs.len(), 1);
182 // ...now when the messages get delivered everyone should be happy
183 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]);
184 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg); // (2)
185 let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
186 // nodes[0] is awaiting nodes[1] revoke_and_ack so get_event_msg's assert(len == 1) passes
187 check_added_monitors!(nodes[0], 1);
189 // deliver(1), generate (3):
190 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
191 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
192 // nodes[1] is awaiting nodes[0] revoke_and_ack so get_event_msg's assert(len == 1) passes
193 check_added_monitors!(nodes[1], 1);
195 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack); // deliver (2)
196 let bs_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
197 assert!(bs_update.update_add_htlcs.is_empty()); // (4)
198 assert!(bs_update.update_fulfill_htlcs.is_empty()); // (4)
199 assert!(bs_update.update_fail_htlcs.is_empty()); // (4)
200 assert!(bs_update.update_fail_malformed_htlcs.is_empty()); // (4)
201 assert!(bs_update.update_fee.is_none()); // (4)
202 check_added_monitors!(nodes[1], 1);
204 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack); // deliver (3)
205 let as_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
206 assert!(as_update.update_add_htlcs.is_empty()); // (5)
207 assert!(as_update.update_fulfill_htlcs.is_empty()); // (5)
208 assert!(as_update.update_fail_htlcs.is_empty()); // (5)
209 assert!(as_update.update_fail_malformed_htlcs.is_empty()); // (5)
210 assert!(as_update.update_fee.is_none()); // (5)
211 check_added_monitors!(nodes[0], 1);
213 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_update.commitment_signed); // deliver (4)
214 let as_second_revoke = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
215 // only (6) so get_event_msg's assert(len == 1) passes
216 check_added_monitors!(nodes[0], 1);
218 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_update.commitment_signed); // deliver (5)
219 let bs_second_revoke = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
220 check_added_monitors!(nodes[1], 1);
222 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke);
223 check_added_monitors!(nodes[0], 1);
225 let events_2 = nodes[0].node.get_and_clear_pending_events();
226 assert_eq!(events_2.len(), 1);
228 Event::PendingHTLCsForwardable {..} => {}, // If we actually processed we'd receive the payment
229 _ => panic!("Unexpected event"),
232 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_second_revoke); // deliver (6)
233 check_added_monitors!(nodes[1], 1);
237 fn test_update_fee_unordered_raa() {
238 // Just the intro to the previous test followed by an out-of-order RAA (which caused a
239 // crash in an earlier version of the update_fee patch)
240 let chanmon_cfgs = create_chanmon_cfgs(2);
241 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
242 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
243 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
244 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
245 let channel_id = chan.2;
246 let logger = test_utils::TestLogger::new();
249 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
251 // First nodes[0] generates an update_fee
252 nodes[0].node.update_fee(channel_id, get_feerate!(nodes[0], channel_id) + 20).unwrap();
253 check_added_monitors!(nodes[0], 1);
255 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
256 assert_eq!(events_0.len(), 1);
257 let update_msg = match events_0[0] { // (1)
258 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, .. }, .. } => {
261 _ => panic!("Unexpected event"),
264 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
266 // ...but before it's delivered, nodes[1] starts to send a payment back to nodes[0]...
267 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[0]);
268 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
269 nodes[1].node.send_payment(&get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 40000, TEST_FINAL_CLTV, &logger).unwrap(), our_payment_hash, &Some(our_payment_secret)).unwrap();
270 check_added_monitors!(nodes[1], 1);
272 let payment_event = {
273 let mut events_1 = nodes[1].node.get_and_clear_pending_msg_events();
274 assert_eq!(events_1.len(), 1);
275 SendEvent::from_event(events_1.remove(0))
277 assert_eq!(payment_event.node_id, nodes[0].node.get_our_node_id());
278 assert_eq!(payment_event.msgs.len(), 1);
280 // ...now when the messages get delivered everyone should be happy
281 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]);
282 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg); // (2)
283 let as_revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
284 // nodes[0] is awaiting nodes[1] revoke_and_ack so get_event_msg's assert(len == 1) passes
285 check_added_monitors!(nodes[0], 1);
287 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_msg); // deliver (2)
288 check_added_monitors!(nodes[1], 1);
290 // We can't continue, sadly, because our (1) now has a bogus signature
294 fn test_multi_flight_update_fee() {
295 let chanmon_cfgs = create_chanmon_cfgs(2);
296 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
297 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
298 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
299 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
300 let channel_id = chan.2;
303 // update_fee/commitment_signed ->
304 // .- send (1) RAA and (2) commitment_signed
305 // update_fee (never committed) ->
307 // We have to manually generate the above update_fee, it is allowed by the protocol but we
308 // don't track which updates correspond to which revoke_and_ack responses so we're in
309 // AwaitingRAA mode and will not generate the update_fee yet.
310 // <- (1) RAA delivered
311 // (3) is generated and send (4) CS -.
312 // Note that A cannot generate (4) prior to (1) being delivered as it otherwise doesn't
313 // know the per_commitment_point to use for it.
314 // <- (2) commitment_signed delivered
316 // B should send no response here
317 // (4) commitment_signed delivered ->
318 // <- RAA/commitment_signed delivered
321 // First nodes[0] generates an update_fee
322 let initial_feerate = get_feerate!(nodes[0], channel_id);
323 nodes[0].node.update_fee(channel_id, initial_feerate + 20).unwrap();
324 check_added_monitors!(nodes[0], 1);
326 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
327 assert_eq!(events_0.len(), 1);
328 let (update_msg_1, commitment_signed_1) = match events_0[0] { // (1)
329 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
330 (update_fee.as_ref().unwrap(), commitment_signed)
332 _ => panic!("Unexpected event"),
335 // Deliver first update_fee/commitment_signed pair, generating (1) and (2):
336 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg_1);
337 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed_1);
338 let (bs_revoke_msg, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
339 check_added_monitors!(nodes[1], 1);
341 // nodes[0] is awaiting a revoke from nodes[1] before it will create a new commitment
343 nodes[0].node.update_fee(channel_id, initial_feerate + 40).unwrap();
344 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
345 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
347 // Create the (3) update_fee message that nodes[0] will generate before it does...
348 let mut update_msg_2 = msgs::UpdateFee {
349 channel_id: update_msg_1.channel_id.clone(),
350 feerate_per_kw: (initial_feerate + 30) as u32,
353 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg_2);
355 update_msg_2.feerate_per_kw = (initial_feerate + 40) as u32;
357 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg_2);
359 // Deliver (1), generating (3) and (4)
360 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_msg);
361 let as_second_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
362 check_added_monitors!(nodes[0], 1);
363 assert!(as_second_update.update_add_htlcs.is_empty());
364 assert!(as_second_update.update_fulfill_htlcs.is_empty());
365 assert!(as_second_update.update_fail_htlcs.is_empty());
366 assert!(as_second_update.update_fail_malformed_htlcs.is_empty());
367 // Check that the update_fee newly generated matches what we delivered:
368 assert_eq!(as_second_update.update_fee.as_ref().unwrap().channel_id, update_msg_2.channel_id);
369 assert_eq!(as_second_update.update_fee.as_ref().unwrap().feerate_per_kw, update_msg_2.feerate_per_kw);
371 // Deliver (2) commitment_signed
372 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_commitment_signed);
373 let as_revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
374 check_added_monitors!(nodes[0], 1);
375 // No commitment_signed so get_event_msg's assert(len == 1) passes
377 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_msg);
378 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
379 check_added_monitors!(nodes[1], 1);
382 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_second_update.commitment_signed);
383 let (bs_second_revoke, bs_second_commitment) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
384 check_added_monitors!(nodes[1], 1);
386 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke);
387 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
388 check_added_monitors!(nodes[0], 1);
390 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_commitment);
391 let as_second_revoke = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
392 // No commitment_signed so get_event_msg's assert(len == 1) passes
393 check_added_monitors!(nodes[0], 1);
395 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_second_revoke);
396 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
397 check_added_monitors!(nodes[1], 1);
400 fn do_test_1_conf_open(connect_style: ConnectStyle) {
401 // Previously, if the minium_depth config was set to 1, we'd never send a funding_locked. This
402 // tests that we properly send one in that case.
403 let mut alice_config = UserConfig::default();
404 alice_config.own_channel_config.minimum_depth = 1;
405 alice_config.channel_options.announced_channel = true;
406 alice_config.peer_channel_config_limits.force_announced_channel_preference = false;
407 let mut bob_config = UserConfig::default();
408 bob_config.own_channel_config.minimum_depth = 1;
409 bob_config.channel_options.announced_channel = true;
410 bob_config.peer_channel_config_limits.force_announced_channel_preference = false;
411 let chanmon_cfgs = create_chanmon_cfgs(2);
412 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
413 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[Some(alice_config), Some(bob_config)]);
414 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
415 *nodes[0].connect_style.borrow_mut() = connect_style;
417 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001, InitFeatures::known(), InitFeatures::known());
418 mine_transaction(&nodes[1], &tx);
419 nodes[0].node.handle_funding_locked(&nodes[1].node.get_our_node_id(), &get_event_msg!(nodes[1], MessageSendEvent::SendFundingLocked, nodes[0].node.get_our_node_id()));
421 mine_transaction(&nodes[0], &tx);
422 let (funding_locked, _) = create_chan_between_nodes_with_value_confirm_second(&nodes[1], &nodes[0]);
423 let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_locked);
426 assert!(node.net_graph_msg_handler.handle_channel_announcement(&announcement).unwrap());
427 node.net_graph_msg_handler.handle_channel_update(&as_update).unwrap();
428 node.net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
432 fn test_1_conf_open() {
433 do_test_1_conf_open(ConnectStyle::BestBlockFirst);
434 do_test_1_conf_open(ConnectStyle::TransactionsFirst);
435 do_test_1_conf_open(ConnectStyle::FullBlockViaListen);
438 fn do_test_sanity_on_in_flight_opens(steps: u8) {
439 // Previously, we had issues deserializing channels when we hadn't connected the first block
440 // after creation. To catch that and similar issues, we lean on the Node::drop impl to test
441 // serialization round-trips and simply do steps towards opening a channel and then drop the
444 let chanmon_cfgs = create_chanmon_cfgs(2);
445 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
446 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
447 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
449 if steps & 0b1000_0000 != 0{
451 header: BlockHeader { version: 0x20000000, prev_blockhash: nodes[0].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
454 connect_block(&nodes[0], &block);
455 connect_block(&nodes[1], &block);
458 if steps & 0x0f == 0 { return; }
459 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
460 let open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
462 if steps & 0x0f == 1 { return; }
463 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_channel);
464 let accept_channel = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
466 if steps & 0x0f == 2 { return; }
467 nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &accept_channel);
469 let (temporary_channel_id, tx, funding_output) = create_funding_transaction(&nodes[0], 100000, 42);
471 if steps & 0x0f == 3 { return; }
472 nodes[0].node.funding_transaction_generated(&temporary_channel_id, tx.clone()).unwrap();
473 check_added_monitors!(nodes[0], 0);
474 let funding_created = get_event_msg!(nodes[0], MessageSendEvent::SendFundingCreated, nodes[1].node.get_our_node_id());
476 if steps & 0x0f == 4 { return; }
477 nodes[1].node.handle_funding_created(&nodes[0].node.get_our_node_id(), &funding_created);
479 let mut added_monitors = nodes[1].chain_monitor.added_monitors.lock().unwrap();
480 assert_eq!(added_monitors.len(), 1);
481 assert_eq!(added_monitors[0].0, funding_output);
482 added_monitors.clear();
484 let funding_signed = get_event_msg!(nodes[1], MessageSendEvent::SendFundingSigned, nodes[0].node.get_our_node_id());
486 if steps & 0x0f == 5 { return; }
487 nodes[0].node.handle_funding_signed(&nodes[1].node.get_our_node_id(), &funding_signed);
489 let mut added_monitors = nodes[0].chain_monitor.added_monitors.lock().unwrap();
490 assert_eq!(added_monitors.len(), 1);
491 assert_eq!(added_monitors[0].0, funding_output);
492 added_monitors.clear();
495 let events_4 = nodes[0].node.get_and_clear_pending_events();
496 assert_eq!(events_4.len(), 0);
498 if steps & 0x0f == 6 { return; }
499 create_chan_between_nodes_with_value_confirm_first(&nodes[0], &nodes[1], &tx, 2);
501 if steps & 0x0f == 7 { return; }
502 confirm_transaction_at(&nodes[0], &tx, 2);
503 connect_blocks(&nodes[0], CHAN_CONFIRM_DEPTH);
504 create_chan_between_nodes_with_value_confirm_second(&nodes[1], &nodes[0]);
508 fn test_sanity_on_in_flight_opens() {
509 do_test_sanity_on_in_flight_opens(0);
510 do_test_sanity_on_in_flight_opens(0 | 0b1000_0000);
511 do_test_sanity_on_in_flight_opens(1);
512 do_test_sanity_on_in_flight_opens(1 | 0b1000_0000);
513 do_test_sanity_on_in_flight_opens(2);
514 do_test_sanity_on_in_flight_opens(2 | 0b1000_0000);
515 do_test_sanity_on_in_flight_opens(3);
516 do_test_sanity_on_in_flight_opens(3 | 0b1000_0000);
517 do_test_sanity_on_in_flight_opens(4);
518 do_test_sanity_on_in_flight_opens(4 | 0b1000_0000);
519 do_test_sanity_on_in_flight_opens(5);
520 do_test_sanity_on_in_flight_opens(5 | 0b1000_0000);
521 do_test_sanity_on_in_flight_opens(6);
522 do_test_sanity_on_in_flight_opens(6 | 0b1000_0000);
523 do_test_sanity_on_in_flight_opens(7);
524 do_test_sanity_on_in_flight_opens(7 | 0b1000_0000);
525 do_test_sanity_on_in_flight_opens(8);
526 do_test_sanity_on_in_flight_opens(8 | 0b1000_0000);
530 fn test_update_fee_vanilla() {
531 let chanmon_cfgs = create_chanmon_cfgs(2);
532 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
533 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
534 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
535 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
536 let channel_id = chan.2;
538 let feerate = get_feerate!(nodes[0], channel_id);
539 nodes[0].node.update_fee(channel_id, feerate+25).unwrap();
540 check_added_monitors!(nodes[0], 1);
542 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
543 assert_eq!(events_0.len(), 1);
544 let (update_msg, commitment_signed) = match events_0[0] {
545 MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => {
546 (update_fee.as_ref(), commitment_signed)
548 _ => panic!("Unexpected event"),
550 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
552 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
553 let (revoke_msg, commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
554 check_added_monitors!(nodes[1], 1);
556 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg);
557 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
558 check_added_monitors!(nodes[0], 1);
560 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed);
561 let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
562 // No commitment_signed so get_event_msg's assert(len == 1) passes
563 check_added_monitors!(nodes[0], 1);
565 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg);
566 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
567 check_added_monitors!(nodes[1], 1);
571 fn test_update_fee_that_funder_cannot_afford() {
572 let chanmon_cfgs = create_chanmon_cfgs(2);
573 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
574 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
575 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
576 let channel_value = 1888;
577 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, channel_value, 700000, InitFeatures::known(), InitFeatures::known());
578 let channel_id = chan.2;
581 nodes[0].node.update_fee(channel_id, feerate).unwrap();
582 check_added_monitors!(nodes[0], 1);
583 let update_msg = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
585 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg.update_fee.unwrap());
587 commitment_signed_dance!(nodes[1], nodes[0], update_msg.commitment_signed, false);
589 //Confirm that the new fee based on the last local commitment txn is what we expected based on the feerate of 260 set above.
590 //This value results in a fee that is exactly what the funder can afford (277 sat + 1000 sat channel reserve)
592 let commitment_tx = get_local_commitment_txn!(nodes[1], channel_id)[0].clone();
594 //We made sure neither party's funds are below the dust limit so -2 non-HTLC txns from number of outputs
595 let num_htlcs = commitment_tx.output.len() - 2;
596 let total_fee: u64 = feerate as u64 * (COMMITMENT_TX_BASE_WEIGHT + (num_htlcs as u64) * COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000;
597 let mut actual_fee = commitment_tx.output.iter().fold(0, |acc, output| acc + output.value);
598 actual_fee = channel_value - actual_fee;
599 assert_eq!(total_fee, actual_fee);
602 //Add 2 to the previous fee rate to the final fee increases by 1 (with no HTLCs the fee is essentially
603 //fee_rate*(724/1000) so the increment of 1*0.724 is rounded back down)
604 nodes[0].node.update_fee(channel_id, feerate+2).unwrap();
605 check_added_monitors!(nodes[0], 1);
607 let update2_msg = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
609 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update2_msg.update_fee.unwrap());
611 //While producing the commitment_signed response after handling a received update_fee request the
612 //check to see if the funder, who sent the update_fee request, can afford the new fee (funder_balance >= fee+channel_reserve)
613 //Should produce and error.
614 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &update2_msg.commitment_signed);
615 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Funding remote cannot afford proposed new fee".to_string(), 1);
616 check_added_monitors!(nodes[1], 1);
617 check_closed_broadcast!(nodes[1], true);
621 fn test_update_fee_with_fundee_update_add_htlc() {
622 let chanmon_cfgs = create_chanmon_cfgs(2);
623 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
624 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
625 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
626 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
627 let channel_id = chan.2;
628 let logger = test_utils::TestLogger::new();
631 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
633 let feerate = get_feerate!(nodes[0], channel_id);
634 nodes[0].node.update_fee(channel_id, feerate+20).unwrap();
635 check_added_monitors!(nodes[0], 1);
637 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
638 assert_eq!(events_0.len(), 1);
639 let (update_msg, commitment_signed) = match events_0[0] {
640 MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => {
641 (update_fee.as_ref(), commitment_signed)
643 _ => panic!("Unexpected event"),
645 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
646 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
647 let (revoke_msg, commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
648 check_added_monitors!(nodes[1], 1);
650 let (our_payment_preimage, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[0]);
651 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
652 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 800000, TEST_FINAL_CLTV, &logger).unwrap();
654 // nothing happens since node[1] is in AwaitingRemoteRevoke
655 nodes[1].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
657 let mut added_monitors = nodes[0].chain_monitor.added_monitors.lock().unwrap();
658 assert_eq!(added_monitors.len(), 0);
659 added_monitors.clear();
661 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
662 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
663 // node[1] has nothing to do
665 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg);
666 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
667 check_added_monitors!(nodes[0], 1);
669 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed);
670 let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
671 // No commitment_signed so get_event_msg's assert(len == 1) passes
672 check_added_monitors!(nodes[0], 1);
673 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg);
674 check_added_monitors!(nodes[1], 1);
675 // AwaitingRemoteRevoke ends here
677 let commitment_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
678 assert_eq!(commitment_update.update_add_htlcs.len(), 1);
679 assert_eq!(commitment_update.update_fulfill_htlcs.len(), 0);
680 assert_eq!(commitment_update.update_fail_htlcs.len(), 0);
681 assert_eq!(commitment_update.update_fail_malformed_htlcs.len(), 0);
682 assert_eq!(commitment_update.update_fee.is_none(), true);
684 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &commitment_update.update_add_htlcs[0]);
685 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_update.commitment_signed);
686 check_added_monitors!(nodes[0], 1);
687 let (revoke, commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
689 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke);
690 check_added_monitors!(nodes[1], 1);
691 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
693 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &commitment_signed);
694 check_added_monitors!(nodes[1], 1);
695 let revoke = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
696 // No commitment_signed so get_event_msg's assert(len == 1) passes
698 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke);
699 check_added_monitors!(nodes[0], 1);
700 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
702 expect_pending_htlcs_forwardable!(nodes[0]);
704 let events = nodes[0].node.get_and_clear_pending_events();
705 assert_eq!(events.len(), 1);
707 Event::PaymentReceived { .. } => { },
708 _ => panic!("Unexpected event"),
711 claim_payment(&nodes[1], &vec!(&nodes[0])[..], our_payment_preimage);
713 send_payment(&nodes[1], &vec!(&nodes[0])[..], 800000);
714 send_payment(&nodes[0], &vec!(&nodes[1])[..], 800000);
715 close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true);
719 fn test_update_fee() {
720 let chanmon_cfgs = create_chanmon_cfgs(2);
721 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
722 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
723 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
724 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
725 let channel_id = chan.2;
728 // (1) update_fee/commitment_signed ->
729 // <- (2) revoke_and_ack
730 // .- send (3) commitment_signed
731 // (4) update_fee/commitment_signed ->
732 // .- send (5) revoke_and_ack (no CS as we're awaiting a revoke)
733 // <- (3) commitment_signed delivered
734 // send (6) revoke_and_ack -.
735 // <- (5) deliver revoke_and_ack
736 // (6) deliver revoke_and_ack ->
737 // .- send (7) commitment_signed in response to (4)
738 // <- (7) deliver commitment_signed
741 // Create and deliver (1)...
742 let feerate = get_feerate!(nodes[0], channel_id);
743 nodes[0].node.update_fee(channel_id, feerate+20).unwrap();
744 check_added_monitors!(nodes[0], 1);
746 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
747 assert_eq!(events_0.len(), 1);
748 let (update_msg, commitment_signed) = match events_0[0] {
749 MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => {
750 (update_fee.as_ref(), commitment_signed)
752 _ => panic!("Unexpected event"),
754 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
756 // Generate (2) and (3):
757 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
758 let (revoke_msg, commitment_signed_0) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
759 check_added_monitors!(nodes[1], 1);
762 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg);
763 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
764 check_added_monitors!(nodes[0], 1);
766 // Create and deliver (4)...
767 nodes[0].node.update_fee(channel_id, feerate+30).unwrap();
768 check_added_monitors!(nodes[0], 1);
769 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
770 assert_eq!(events_0.len(), 1);
771 let (update_msg, commitment_signed) = match events_0[0] {
772 MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => {
773 (update_fee.as_ref(), commitment_signed)
775 _ => panic!("Unexpected event"),
778 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
779 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
780 check_added_monitors!(nodes[1], 1);
782 let revoke_msg = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
783 // No commitment_signed so get_event_msg's assert(len == 1) passes
785 // Handle (3), creating (6):
786 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed_0);
787 check_added_monitors!(nodes[0], 1);
788 let revoke_msg_0 = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
789 // No commitment_signed so get_event_msg's assert(len == 1) passes
792 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg);
793 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
794 check_added_monitors!(nodes[0], 1);
796 // Deliver (6), creating (7):
797 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg_0);
798 let commitment_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
799 assert!(commitment_update.update_add_htlcs.is_empty());
800 assert!(commitment_update.update_fulfill_htlcs.is_empty());
801 assert!(commitment_update.update_fail_htlcs.is_empty());
802 assert!(commitment_update.update_fail_malformed_htlcs.is_empty());
803 assert!(commitment_update.update_fee.is_none());
804 check_added_monitors!(nodes[1], 1);
807 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_update.commitment_signed);
808 check_added_monitors!(nodes[0], 1);
809 let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
810 // No commitment_signed so get_event_msg's assert(len == 1) passes
812 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg);
813 check_added_monitors!(nodes[1], 1);
814 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
816 assert_eq!(get_feerate!(nodes[0], channel_id), feerate + 30);
817 assert_eq!(get_feerate!(nodes[1], channel_id), feerate + 30);
818 close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true);
822 fn pre_funding_lock_shutdown_test() {
823 // Test sending a shutdown prior to funding_locked after funding generation
824 let chanmon_cfgs = create_chanmon_cfgs(2);
825 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
826 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
827 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
828 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 8000000, 0, InitFeatures::known(), InitFeatures::known());
829 mine_transaction(&nodes[0], &tx);
830 mine_transaction(&nodes[1], &tx);
832 nodes[0].node.close_channel(&OutPoint { txid: tx.txid(), index: 0 }.to_channel_id()).unwrap();
833 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
834 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
835 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
836 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown);
838 let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
839 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
840 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
841 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap());
842 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
843 assert!(node_0_none.is_none());
845 assert!(nodes[0].node.list_channels().is_empty());
846 assert!(nodes[1].node.list_channels().is_empty());
850 fn updates_shutdown_wait() {
851 // Test sending a shutdown with outstanding updates pending
852 let chanmon_cfgs = create_chanmon_cfgs(3);
853 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
854 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
855 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
856 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
857 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
858 let logger = test_utils::TestLogger::new();
860 let (our_payment_preimage, _, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000);
862 nodes[0].node.close_channel(&chan_1.2).unwrap();
863 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
864 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
865 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
866 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown);
868 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
869 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
871 let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[0]);
873 let net_graph_msg_handler0 = &nodes[0].net_graph_msg_handler;
874 let net_graph_msg_handler1 = &nodes[1].net_graph_msg_handler;
875 let route_1 = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler0.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
876 let route_2 = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler1.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
877 unwrap_send_err!(nodes[0].node.send_payment(&route_1, payment_hash, &Some(payment_secret)), true, APIError::ChannelUnavailable {..}, {});
878 unwrap_send_err!(nodes[1].node.send_payment(&route_2, payment_hash, &Some(payment_secret)), true, APIError::ChannelUnavailable {..}, {});
880 assert!(nodes[2].node.claim_funds(our_payment_preimage));
881 check_added_monitors!(nodes[2], 1);
882 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
883 assert!(updates.update_add_htlcs.is_empty());
884 assert!(updates.update_fail_htlcs.is_empty());
885 assert!(updates.update_fail_malformed_htlcs.is_empty());
886 assert!(updates.update_fee.is_none());
887 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
888 nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
889 check_added_monitors!(nodes[1], 1);
890 let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
891 commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false);
893 assert!(updates_2.update_add_htlcs.is_empty());
894 assert!(updates_2.update_fail_htlcs.is_empty());
895 assert!(updates_2.update_fail_malformed_htlcs.is_empty());
896 assert!(updates_2.update_fee.is_none());
897 assert_eq!(updates_2.update_fulfill_htlcs.len(), 1);
898 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]);
899 commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
901 let events = nodes[0].node.get_and_clear_pending_events();
902 assert_eq!(events.len(), 1);
904 Event::PaymentSent { ref payment_preimage } => {
905 assert_eq!(our_payment_preimage, *payment_preimage);
907 _ => panic!("Unexpected event"),
910 let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
911 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
912 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
913 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap());
914 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
915 assert!(node_0_none.is_none());
917 assert!(nodes[0].node.list_channels().is_empty());
919 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
920 nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
921 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
922 assert!(nodes[1].node.list_channels().is_empty());
923 assert!(nodes[2].node.list_channels().is_empty());
927 fn htlc_fail_async_shutdown() {
928 // Test HTLCs fail if shutdown starts even if messages are delivered out-of-order
929 let chanmon_cfgs = create_chanmon_cfgs(3);
930 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
931 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
932 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
933 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
934 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
935 let logger = test_utils::TestLogger::new();
937 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[2]);
938 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
939 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
940 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
941 check_added_monitors!(nodes[0], 1);
942 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
943 assert_eq!(updates.update_add_htlcs.len(), 1);
944 assert!(updates.update_fulfill_htlcs.is_empty());
945 assert!(updates.update_fail_htlcs.is_empty());
946 assert!(updates.update_fail_malformed_htlcs.is_empty());
947 assert!(updates.update_fee.is_none());
949 nodes[1].node.close_channel(&chan_1.2).unwrap();
950 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
951 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown);
952 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
954 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
955 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &updates.commitment_signed);
956 check_added_monitors!(nodes[1], 1);
957 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
958 commitment_signed_dance!(nodes[1], nodes[0], (), false, true, false);
960 let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
961 assert!(updates_2.update_add_htlcs.is_empty());
962 assert!(updates_2.update_fulfill_htlcs.is_empty());
963 assert_eq!(updates_2.update_fail_htlcs.len(), 1);
964 assert!(updates_2.update_fail_malformed_htlcs.is_empty());
965 assert!(updates_2.update_fee.is_none());
967 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fail_htlcs[0]);
968 commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
970 expect_payment_failed!(nodes[0], our_payment_hash, false);
972 let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
973 assert_eq!(msg_events.len(), 2);
974 let node_0_closing_signed = match msg_events[0] {
975 MessageSendEvent::SendClosingSigned { ref node_id, ref msg } => {
976 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
979 _ => panic!("Unexpected event"),
981 match msg_events[1] {
982 MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelUpdateMessage { ref msg }} => {
983 assert_eq!(msg.contents.short_channel_id, chan_1.0.contents.short_channel_id);
985 _ => panic!("Unexpected event"),
988 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
989 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
990 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
991 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap());
992 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
993 assert!(node_0_none.is_none());
995 assert!(nodes[0].node.list_channels().is_empty());
997 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
998 nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
999 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
1000 assert!(nodes[1].node.list_channels().is_empty());
1001 assert!(nodes[2].node.list_channels().is_empty());
1004 fn do_test_shutdown_rebroadcast(recv_count: u8) {
1005 // Test that shutdown/closing_signed is re-sent on reconnect with a variable number of
1006 // messages delivered prior to disconnect
1007 let chanmon_cfgs = create_chanmon_cfgs(3);
1008 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1009 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1010 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1011 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
1012 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
1014 let (our_payment_preimage, _, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000);
1016 nodes[1].node.close_channel(&chan_1.2).unwrap();
1017 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
1019 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown);
1020 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
1022 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
1026 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
1027 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
1029 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1030 let node_0_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
1031 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1032 let node_1_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
1034 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_reestablish);
1035 let node_1_2nd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
1036 assert!(node_1_shutdown == node_1_2nd_shutdown);
1038 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_reestablish);
1039 let node_0_2nd_shutdown = if recv_count > 0 {
1040 let node_0_2nd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
1041 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_2nd_shutdown);
1044 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1045 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_2nd_shutdown);
1046 get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id())
1048 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_2nd_shutdown);
1050 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1051 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1053 assert!(nodes[2].node.claim_funds(our_payment_preimage));
1054 check_added_monitors!(nodes[2], 1);
1055 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
1056 assert!(updates.update_add_htlcs.is_empty());
1057 assert!(updates.update_fail_htlcs.is_empty());
1058 assert!(updates.update_fail_malformed_htlcs.is_empty());
1059 assert!(updates.update_fee.is_none());
1060 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
1061 nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
1062 check_added_monitors!(nodes[1], 1);
1063 let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1064 commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false);
1066 assert!(updates_2.update_add_htlcs.is_empty());
1067 assert!(updates_2.update_fail_htlcs.is_empty());
1068 assert!(updates_2.update_fail_malformed_htlcs.is_empty());
1069 assert!(updates_2.update_fee.is_none());
1070 assert_eq!(updates_2.update_fulfill_htlcs.len(), 1);
1071 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]);
1072 commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
1074 let events = nodes[0].node.get_and_clear_pending_events();
1075 assert_eq!(events.len(), 1);
1077 Event::PaymentSent { ref payment_preimage } => {
1078 assert_eq!(our_payment_preimage, *payment_preimage);
1080 _ => panic!("Unexpected event"),
1083 let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
1085 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
1086 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
1087 assert!(node_1_closing_signed.is_some());
1090 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
1091 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
1093 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1094 let node_0_2nd_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
1095 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1096 if recv_count == 0 {
1097 // If all closing_signeds weren't delivered we can just resume where we left off...
1098 let node_1_2nd_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
1100 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_2nd_reestablish);
1101 let node_0_3rd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
1102 assert!(node_0_2nd_shutdown == node_0_3rd_shutdown);
1104 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_2nd_reestablish);
1105 let node_1_3rd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
1106 assert!(node_1_3rd_shutdown == node_1_2nd_shutdown);
1108 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_3rd_shutdown);
1109 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1111 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_3rd_shutdown);
1112 let node_0_2nd_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
1113 assert!(node_0_closing_signed == node_0_2nd_closing_signed);
1115 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed);
1116 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
1117 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap());
1118 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
1119 assert!(node_0_none.is_none());
1121 // If one node, however, received + responded with an identical closing_signed we end
1122 // up erroring and node[0] will try to broadcast its own latest commitment transaction.
1123 // There isn't really anything better we can do simply, but in the future we might
1124 // explore storing a set of recently-closed channels that got disconnected during
1125 // closing_signed and avoiding broadcasting local commitment txn for some timeout to
1126 // give our counterparty enough time to (potentially) broadcast a cooperative closing
1128 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1130 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_2nd_reestablish);
1131 let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
1132 assert_eq!(msg_events.len(), 1);
1133 if let MessageSendEvent::HandleError { ref action, .. } = msg_events[0] {
1135 &ErrorAction::SendErrorMessage { ref msg } => {
1136 nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msg);
1137 assert_eq!(msg.channel_id, chan_1.2);
1139 _ => panic!("Unexpected event!"),
1141 } else { panic!("Needed SendErrorMessage close"); }
1143 // get_closing_signed_broadcast usually eats the BroadcastChannelUpdate for us and
1144 // checks it, but in this case nodes[0] didn't ever get a chance to receive a
1145 // closing_signed so we do it ourselves
1146 check_closed_broadcast!(nodes[0], false);
1147 check_added_monitors!(nodes[0], 1);
1150 assert!(nodes[0].node.list_channels().is_empty());
1152 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
1153 nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
1154 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
1155 assert!(nodes[1].node.list_channels().is_empty());
1156 assert!(nodes[2].node.list_channels().is_empty());
1160 fn test_shutdown_rebroadcast() {
1161 do_test_shutdown_rebroadcast(0);
1162 do_test_shutdown_rebroadcast(1);
1163 do_test_shutdown_rebroadcast(2);
1167 fn fake_network_test() {
1168 // Simple test which builds a network of ChannelManagers, connects them to each other, and
1169 // tests that payments get routed and transactions broadcast in semi-reasonable ways.
1170 let chanmon_cfgs = create_chanmon_cfgs(4);
1171 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
1172 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
1173 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
1175 // Create some initial channels
1176 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
1177 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
1178 let chan_3 = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known());
1180 // Rebalance the network a bit by relaying one payment through all the channels...
1181 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000);
1182 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000);
1183 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000);
1184 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000);
1186 // Send some more payments
1187 send_payment(&nodes[1], &vec!(&nodes[2], &nodes[3])[..], 1000000);
1188 send_payment(&nodes[3], &vec!(&nodes[2], &nodes[1], &nodes[0])[..], 1000000);
1189 send_payment(&nodes[3], &vec!(&nodes[2], &nodes[1])[..], 1000000);
1191 // Test failure packets
1192 let payment_hash_1 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 1000000).1;
1193 fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], payment_hash_1);
1195 // Add a new channel that skips 3
1196 let chan_4 = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known());
1198 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 1000000);
1199 send_payment(&nodes[2], &vec!(&nodes[3])[..], 1000000);
1200 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000);
1201 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000);
1202 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000);
1203 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000);
1204 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000);
1206 // Do some rebalance loop payments, simultaneously
1207 let mut hops = Vec::with_capacity(3);
1208 hops.push(RouteHop {
1209 pubkey: nodes[2].node.get_our_node_id(),
1210 node_features: NodeFeatures::empty(),
1211 short_channel_id: chan_2.0.contents.short_channel_id,
1212 channel_features: ChannelFeatures::empty(),
1214 cltv_expiry_delta: chan_3.0.contents.cltv_expiry_delta as u32
1216 hops.push(RouteHop {
1217 pubkey: nodes[3].node.get_our_node_id(),
1218 node_features: NodeFeatures::empty(),
1219 short_channel_id: chan_3.0.contents.short_channel_id,
1220 channel_features: ChannelFeatures::empty(),
1222 cltv_expiry_delta: chan_4.1.contents.cltv_expiry_delta as u32
1224 hops.push(RouteHop {
1225 pubkey: nodes[1].node.get_our_node_id(),
1226 node_features: NodeFeatures::known(),
1227 short_channel_id: chan_4.0.contents.short_channel_id,
1228 channel_features: ChannelFeatures::known(),
1230 cltv_expiry_delta: TEST_FINAL_CLTV,
1232 hops[1].fee_msat = chan_4.1.contents.fee_base_msat as u64 + chan_4.1.contents.fee_proportional_millionths as u64 * hops[2].fee_msat as u64 / 1000000;
1233 hops[0].fee_msat = chan_3.0.contents.fee_base_msat as u64 + chan_3.0.contents.fee_proportional_millionths as u64 * hops[1].fee_msat as u64 / 1000000;
1234 let payment_preimage_1 = send_along_route(&nodes[1], Route { paths: vec![hops] }, &vec!(&nodes[2], &nodes[3], &nodes[1])[..], 1000000).0;
1236 let mut hops = Vec::with_capacity(3);
1237 hops.push(RouteHop {
1238 pubkey: nodes[3].node.get_our_node_id(),
1239 node_features: NodeFeatures::empty(),
1240 short_channel_id: chan_4.0.contents.short_channel_id,
1241 channel_features: ChannelFeatures::empty(),
1243 cltv_expiry_delta: chan_3.1.contents.cltv_expiry_delta as u32
1245 hops.push(RouteHop {
1246 pubkey: nodes[2].node.get_our_node_id(),
1247 node_features: NodeFeatures::empty(),
1248 short_channel_id: chan_3.0.contents.short_channel_id,
1249 channel_features: ChannelFeatures::empty(),
1251 cltv_expiry_delta: chan_2.1.contents.cltv_expiry_delta as u32
1253 hops.push(RouteHop {
1254 pubkey: nodes[1].node.get_our_node_id(),
1255 node_features: NodeFeatures::known(),
1256 short_channel_id: chan_2.0.contents.short_channel_id,
1257 channel_features: ChannelFeatures::known(),
1259 cltv_expiry_delta: TEST_FINAL_CLTV,
1261 hops[1].fee_msat = chan_2.1.contents.fee_base_msat as u64 + chan_2.1.contents.fee_proportional_millionths as u64 * hops[2].fee_msat as u64 / 1000000;
1262 hops[0].fee_msat = chan_3.1.contents.fee_base_msat as u64 + chan_3.1.contents.fee_proportional_millionths as u64 * hops[1].fee_msat as u64 / 1000000;
1263 let payment_hash_2 = send_along_route(&nodes[1], Route { paths: vec![hops] }, &vec!(&nodes[3], &nodes[2], &nodes[1])[..], 1000000).1;
1265 // Claim the rebalances...
1266 fail_payment(&nodes[1], &vec!(&nodes[3], &nodes[2], &nodes[1])[..], payment_hash_2);
1267 claim_payment(&nodes[1], &vec!(&nodes[2], &nodes[3], &nodes[1])[..], payment_preimage_1);
1269 // Add a duplicate new channel from 2 to 4
1270 let chan_5 = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known());
1272 // Send some payments across both channels
1273 let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0;
1274 let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0;
1275 let payment_preimage_5 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0;
1278 route_over_limit(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000);
1279 let events = nodes[0].node.get_and_clear_pending_msg_events();
1280 assert_eq!(events.len(), 0);
1281 nodes[0].logger.assert_log_regex("lightning::ln::channelmanager".to_string(), regex::Regex::new(r"Cannot send value that would put us over the max HTLC value in flight our peer will accept \(\d+\)").unwrap(), 1);
1283 //TODO: Test that routes work again here as we've been notified that the channel is full
1285 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_3);
1286 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_4);
1287 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_5);
1289 // Close down the channels...
1290 close_channel(&nodes[0], &nodes[1], &chan_1.2, chan_1.3, true);
1291 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, false);
1292 close_channel(&nodes[2], &nodes[3], &chan_3.2, chan_3.3, true);
1293 close_channel(&nodes[1], &nodes[3], &chan_4.2, chan_4.3, false);
1294 close_channel(&nodes[1], &nodes[3], &chan_5.2, chan_5.3, false);
1298 fn holding_cell_htlc_counting() {
1299 // Tests that HTLCs in the holding cell count towards the pending HTLC limits on outbound HTLCs
1300 // to ensure we don't end up with HTLCs sitting around in our holding cell for several
1301 // commitment dance rounds.
1302 let chanmon_cfgs = create_chanmon_cfgs(3);
1303 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1304 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1305 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1306 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
1307 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
1308 let logger = test_utils::TestLogger::new();
1310 let mut payments = Vec::new();
1311 for _ in 0..::ln::channel::OUR_MAX_HTLCS {
1312 let (payment_preimage, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[2]);
1313 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
1314 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
1315 nodes[1].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
1316 payments.push((payment_preimage, payment_hash));
1318 check_added_monitors!(nodes[1], 1);
1320 let mut events = nodes[1].node.get_and_clear_pending_msg_events();
1321 assert_eq!(events.len(), 1);
1322 let initial_payment_event = SendEvent::from_event(events.pop().unwrap());
1323 assert_eq!(initial_payment_event.node_id, nodes[2].node.get_our_node_id());
1325 // There is now one HTLC in an outbound commitment transaction and (OUR_MAX_HTLCS - 1) HTLCs in
1326 // the holding cell waiting on B's RAA to send. At this point we should not be able to add
1328 let (_, payment_hash_1, payment_secret_1) = get_payment_preimage_hash!(nodes[2]);
1330 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
1331 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
1332 unwrap_send_err!(nodes[1].node.send_payment(&route, payment_hash_1, &Some(payment_secret_1)), true, APIError::ChannelUnavailable { ref err },
1333 assert!(regex::Regex::new(r"Cannot push more than their max accepted HTLCs \(\d+\)").unwrap().is_match(err)));
1334 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1335 nodes[1].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot push more than their max accepted HTLCs".to_string(), 1);
1338 // This should also be true if we try to forward a payment.
1339 let (_, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[2]);
1341 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1342 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
1343 nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
1344 check_added_monitors!(nodes[0], 1);
1347 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1348 assert_eq!(events.len(), 1);
1349 let payment_event = SendEvent::from_event(events.pop().unwrap());
1350 assert_eq!(payment_event.node_id, nodes[1].node.get_our_node_id());
1352 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
1353 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
1354 // We have to forward pending HTLCs twice - once tries to forward the payment forward (and
1355 // fails), the second will process the resulting failure and fail the HTLC backward.
1356 expect_pending_htlcs_forwardable!(nodes[1]);
1357 expect_pending_htlcs_forwardable!(nodes[1]);
1358 check_added_monitors!(nodes[1], 1);
1360 let bs_fail_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1361 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &bs_fail_updates.update_fail_htlcs[0]);
1362 commitment_signed_dance!(nodes[0], nodes[1], bs_fail_updates.commitment_signed, false, true);
1364 let events = nodes[0].node.get_and_clear_pending_msg_events();
1365 assert_eq!(events.len(), 1);
1367 MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelUpdateMessage { ref msg }} => {
1368 assert_eq!(msg.contents.short_channel_id, chan_2.0.contents.short_channel_id);
1370 _ => panic!("Unexpected event"),
1373 expect_payment_failed!(nodes[0], payment_hash_2, false);
1375 // Now forward all the pending HTLCs and claim them back
1376 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &initial_payment_event.msgs[0]);
1377 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &initial_payment_event.commitment_msg);
1378 check_added_monitors!(nodes[2], 1);
1380 let (bs_revoke_and_ack, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[2], nodes[1].node.get_our_node_id());
1381 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_revoke_and_ack);
1382 check_added_monitors!(nodes[1], 1);
1383 let as_updates = get_htlc_update_msgs!(nodes[1], nodes[2].node.get_our_node_id());
1385 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &bs_commitment_signed);
1386 check_added_monitors!(nodes[1], 1);
1387 let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
1389 for ref update in as_updates.update_add_htlcs.iter() {
1390 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), update);
1392 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &as_updates.commitment_signed);
1393 check_added_monitors!(nodes[2], 1);
1394 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa);
1395 check_added_monitors!(nodes[2], 1);
1396 let (bs_revoke_and_ack, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[2], nodes[1].node.get_our_node_id());
1398 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_revoke_and_ack);
1399 check_added_monitors!(nodes[1], 1);
1400 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &bs_commitment_signed);
1401 check_added_monitors!(nodes[1], 1);
1402 let as_final_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
1404 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_final_raa);
1405 check_added_monitors!(nodes[2], 1);
1407 expect_pending_htlcs_forwardable!(nodes[2]);
1409 let events = nodes[2].node.get_and_clear_pending_events();
1410 assert_eq!(events.len(), payments.len());
1411 for (event, &(_, ref hash)) in events.iter().zip(payments.iter()) {
1413 &Event::PaymentReceived { ref payment_hash, .. } => {
1414 assert_eq!(*payment_hash, *hash);
1416 _ => panic!("Unexpected event"),
1420 for (preimage, _) in payments.drain(..) {
1421 claim_payment(&nodes[1], &[&nodes[2]], preimage);
1424 send_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1000000);
1428 fn duplicate_htlc_test() {
1429 // Test that we accept duplicate payment_hash HTLCs across the network and that
1430 // claiming/failing them are all separate and don't affect each other
1431 let chanmon_cfgs = create_chanmon_cfgs(6);
1432 let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
1433 let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
1434 let mut nodes = create_network(6, &node_cfgs, &node_chanmgrs);
1436 // Create some initial channels to route via 3 to 4/5 from 0/1/2
1437 create_announced_chan_between_nodes(&nodes, 0, 3, InitFeatures::known(), InitFeatures::known());
1438 create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known());
1439 create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known());
1440 create_announced_chan_between_nodes(&nodes, 3, 4, InitFeatures::known(), InitFeatures::known());
1441 create_announced_chan_between_nodes(&nodes, 3, 5, InitFeatures::known(), InitFeatures::known());
1443 let (payment_preimage, payment_hash, _) = route_payment(&nodes[0], &vec!(&nodes[3], &nodes[4])[..], 1000000);
1445 *nodes[0].network_payment_count.borrow_mut() -= 1;
1446 assert_eq!(route_payment(&nodes[1], &vec!(&nodes[3])[..], 1000000).0, payment_preimage);
1448 *nodes[0].network_payment_count.borrow_mut() -= 1;
1449 assert_eq!(route_payment(&nodes[2], &vec!(&nodes[3], &nodes[5])[..], 1000000).0, payment_preimage);
1451 claim_payment(&nodes[0], &vec!(&nodes[3], &nodes[4])[..], payment_preimage);
1452 fail_payment(&nodes[2], &vec!(&nodes[3], &nodes[5])[..], payment_hash);
1453 claim_payment(&nodes[1], &vec!(&nodes[3])[..], payment_preimage);
1457 fn test_duplicate_htlc_different_direction_onchain() {
1458 // Test that ChannelMonitor doesn't generate 2 preimage txn
1459 // when we have 2 HTLCs with same preimage that go across a node
1460 // in opposite directions, even with the same payment secret.
1461 let chanmon_cfgs = create_chanmon_cfgs(2);
1462 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1463 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1464 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1466 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
1467 let logger = test_utils::TestLogger::new();
1470 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
1472 let (payment_preimage, payment_hash, _) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 900_000);
1474 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
1475 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 800_000, TEST_FINAL_CLTV, &logger).unwrap();
1476 let node_a_payment_secret = nodes[0].node.create_inbound_payment_for_hash(payment_hash, None, 7200, 0).unwrap();
1477 send_along_route_with_secret(&nodes[1], route, &[&[&nodes[0]]], 800_000, payment_hash, node_a_payment_secret);
1479 // Provide preimage to node 0 by claiming payment
1480 nodes[0].node.claim_funds(payment_preimage);
1481 check_added_monitors!(nodes[0], 1);
1483 // Broadcast node 1 commitment txn
1484 let remote_txn = get_local_commitment_txn!(nodes[1], chan_1.2);
1486 assert_eq!(remote_txn[0].output.len(), 4); // 1 local, 1 remote, 1 htlc inbound, 1 htlc outbound
1487 let mut has_both_htlcs = 0; // check htlcs match ones committed
1488 for outp in remote_txn[0].output.iter() {
1489 if outp.value == 800_000 / 1000 {
1490 has_both_htlcs += 1;
1491 } else if outp.value == 900_000 / 1000 {
1492 has_both_htlcs += 1;
1495 assert_eq!(has_both_htlcs, 2);
1497 mine_transaction(&nodes[0], &remote_txn[0]);
1498 check_added_monitors!(nodes[0], 1);
1499 connect_blocks(&nodes[0], TEST_FINAL_CLTV - 1); // Confirm blocks until the HTLC expires
1501 // Check we only broadcast 1 timeout tx
1502 let claim_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
1503 assert_eq!(claim_txn.len(), 8);
1504 assert_eq!(claim_txn[1], claim_txn[4]);
1505 assert_eq!(claim_txn[2], claim_txn[5]);
1506 check_spends!(claim_txn[1], chan_1.3);
1507 check_spends!(claim_txn[2], claim_txn[1]);
1508 check_spends!(claim_txn[7], claim_txn[1]);
1510 assert_eq!(claim_txn[0].input.len(), 1);
1511 assert_eq!(claim_txn[3].input.len(), 1);
1512 assert_eq!(claim_txn[0].input[0].previous_output, claim_txn[3].input[0].previous_output);
1514 assert_eq!(claim_txn[0].input.len(), 1);
1515 assert_eq!(claim_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); // HTLC 1 <--> 0, preimage tx
1516 check_spends!(claim_txn[0], remote_txn[0]);
1517 assert_eq!(remote_txn[0].output[claim_txn[0].input[0].previous_output.vout as usize].value, 800);
1518 assert_eq!(claim_txn[6].input.len(), 1);
1519 assert_eq!(claim_txn[6].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); // HTLC 0 <--> 1, timeout tx
1520 check_spends!(claim_txn[6], remote_txn[0]);
1521 assert_eq!(remote_txn[0].output[claim_txn[6].input[0].previous_output.vout as usize].value, 900);
1523 let events = nodes[0].node.get_and_clear_pending_msg_events();
1524 assert_eq!(events.len(), 3);
1527 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
1528 MessageSendEvent::HandleError { node_id, action: msgs::ErrorAction::SendErrorMessage { ref msg } } => {
1529 assert_eq!(node_id, nodes[1].node.get_our_node_id());
1530 assert_eq!(msg.data, "Commitment or closing transaction was confirmed on chain.");
1532 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, .. } } => {
1533 assert!(update_add_htlcs.is_empty());
1534 assert!(update_fail_htlcs.is_empty());
1535 assert_eq!(update_fulfill_htlcs.len(), 1);
1536 assert!(update_fail_malformed_htlcs.is_empty());
1537 assert_eq!(nodes[1].node.get_our_node_id(), *node_id);
1539 _ => panic!("Unexpected event"),
1545 fn test_basic_channel_reserve() {
1546 let chanmon_cfgs = create_chanmon_cfgs(2);
1547 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1548 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1549 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1550 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1551 let logger = test_utils::TestLogger::new();
1553 let chan_stat = get_channel_value_stat!(nodes[0], chan.2);
1554 let channel_reserve = chan_stat.channel_reserve_msat;
1556 // The 2* and +1 are for the fee spike reserve.
1557 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
1558 let commit_tx_fee = 2 * commit_tx_fee_msat(get_feerate!(nodes[0], chan.2), 1 + 1);
1559 let max_can_send = 5000000 - channel_reserve - commit_tx_fee;
1560 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1561 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes.last().unwrap().node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), max_can_send + 1, TEST_FINAL_CLTV, &logger).unwrap();
1562 let err = nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).err().unwrap();
1564 PaymentSendFailure::AllFailedRetrySafe(ref fails) => {
1566 &APIError::ChannelUnavailable{ref err} =>
1567 assert!(regex::Regex::new(r"Cannot send value that would put our balance under counterparty-announced channel reserve value \(\d+\)").unwrap().is_match(err)),
1568 _ => panic!("Unexpected error variant"),
1571 _ => panic!("Unexpected error variant"),
1573 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1574 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot send value that would put our balance under counterparty-announced channel reserve value".to_string(), 1);
1576 send_payment(&nodes[0], &vec![&nodes[1]], max_can_send);
1580 fn test_fee_spike_violation_fails_htlc() {
1581 let chanmon_cfgs = create_chanmon_cfgs(2);
1582 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1583 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1584 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1585 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1587 let (route, payment_hash, _, payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 3460001);
1588 // Need to manually create the update_add_htlc message to go around the channel reserve check in send_htlc()
1589 let secp_ctx = Secp256k1::new();
1590 let session_priv = SecretKey::from_slice(&[42; 32]).expect("RNG is bad!");
1592 let cur_height = nodes[1].node.best_block.read().unwrap().height() + 1;
1594 let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route.paths[0], &session_priv).unwrap();
1595 let (onion_payloads, htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route.paths[0], 3460001, &Some(payment_secret), cur_height).unwrap();
1596 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &payment_hash);
1597 let msg = msgs::UpdateAddHTLC {
1600 amount_msat: htlc_msat,
1601 payment_hash: payment_hash,
1602 cltv_expiry: htlc_cltv,
1603 onion_routing_packet: onion_packet,
1606 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg);
1608 // Now manually create the commitment_signed message corresponding to the update_add
1609 // nodes[0] just sent. In the code for construction of this message, "local" refers
1610 // to the sender of the message, and "remote" refers to the receiver.
1612 let feerate_per_kw = get_feerate!(nodes[0], chan.2);
1614 const INITIAL_COMMITMENT_NUMBER: u64 = (1 << 48) - 1;
1616 // Get the EnforcingSigner for each channel, which will be used to (1) get the keys
1617 // needed to sign the new commitment tx and (2) sign the new commitment tx.
1618 let (local_revocation_basepoint, local_htlc_basepoint, local_secret, next_local_point) = {
1619 let chan_lock = nodes[0].node.channel_state.lock().unwrap();
1620 let local_chan = chan_lock.by_id.get(&chan.2).unwrap();
1621 let chan_signer = local_chan.get_signer();
1622 let pubkeys = chan_signer.pubkeys();
1623 (pubkeys.revocation_basepoint, pubkeys.htlc_basepoint,
1624 chan_signer.release_commitment_secret(INITIAL_COMMITMENT_NUMBER),
1625 chan_signer.get_per_commitment_point(INITIAL_COMMITMENT_NUMBER - 2, &secp_ctx))
1627 let (remote_delayed_payment_basepoint, remote_htlc_basepoint,remote_point) = {
1628 let chan_lock = nodes[1].node.channel_state.lock().unwrap();
1629 let remote_chan = chan_lock.by_id.get(&chan.2).unwrap();
1630 let chan_signer = remote_chan.get_signer();
1631 let pubkeys = chan_signer.pubkeys();
1632 (pubkeys.delayed_payment_basepoint, pubkeys.htlc_basepoint,
1633 chan_signer.get_per_commitment_point(INITIAL_COMMITMENT_NUMBER - 1, &secp_ctx))
1636 // Assemble the set of keys we can use for signatures for our commitment_signed message.
1637 let commit_tx_keys = chan_utils::TxCreationKeys::derive_new(&secp_ctx, &remote_point, &remote_delayed_payment_basepoint,
1638 &remote_htlc_basepoint, &local_revocation_basepoint, &local_htlc_basepoint).unwrap();
1640 // Build the remote commitment transaction so we can sign it, and then later use the
1641 // signature for the commitment_signed message.
1642 let local_chan_balance = 1313;
1644 let accepted_htlc_info = chan_utils::HTLCOutputInCommitment {
1646 amount_msat: 3460001,
1647 cltv_expiry: htlc_cltv,
1649 transaction_output_index: Some(1),
1652 let commitment_number = INITIAL_COMMITMENT_NUMBER - 1;
1655 let local_chan_lock = nodes[0].node.channel_state.lock().unwrap();
1656 let local_chan = local_chan_lock.by_id.get(&chan.2).unwrap();
1657 let local_chan_signer = local_chan.get_signer();
1658 let commitment_tx = CommitmentTransaction::new_with_auxiliary_htlc_data(
1662 commit_tx_keys.clone(),
1664 &mut vec![(accepted_htlc_info, ())],
1665 &local_chan.channel_transaction_parameters.as_counterparty_broadcastable()
1667 local_chan_signer.sign_counterparty_commitment(&commitment_tx, &secp_ctx).unwrap()
1670 let commit_signed_msg = msgs::CommitmentSigned {
1673 htlc_signatures: res.1
1676 // Send the commitment_signed message to the nodes[1].
1677 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &commit_signed_msg);
1678 let _ = nodes[1].node.get_and_clear_pending_msg_events();
1680 // Send the RAA to nodes[1].
1681 let raa_msg = msgs::RevokeAndACK {
1683 per_commitment_secret: local_secret,
1684 next_per_commitment_point: next_local_point
1686 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &raa_msg);
1688 let events = nodes[1].node.get_and_clear_pending_msg_events();
1689 assert_eq!(events.len(), 1);
1690 // Make sure the HTLC failed in the way we expect.
1692 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fail_htlcs, .. }, .. } => {
1693 assert_eq!(update_fail_htlcs.len(), 1);
1694 update_fail_htlcs[0].clone()
1696 _ => panic!("Unexpected event"),
1698 nodes[1].logger.assert_log("lightning::ln::channel".to_string(), "Attempting to fail HTLC due to fee spike buffer violation".to_string(), 1);
1700 check_added_monitors!(nodes[1], 2);
1704 fn test_chan_reserve_violation_outbound_htlc_inbound_chan() {
1705 let mut chanmon_cfgs = create_chanmon_cfgs(2);
1706 // Set the fee rate for the channel very high, to the point where the fundee
1707 // sending any above-dust amount would result in a channel reserve violation.
1708 // In this test we check that we would be prevented from sending an HTLC in
1710 chanmon_cfgs[0].fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 6000 };
1711 chanmon_cfgs[1].fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 6000 };
1712 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1713 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1714 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1715 let _ = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1717 let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[1], nodes[0], 4843000);
1718 unwrap_send_err!(nodes[1].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)), true, APIError::ChannelUnavailable { ref err },
1719 assert_eq!(err, "Cannot send value that would put counterparty balance under holder-announced channel reserve value"));
1720 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1721 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Cannot send value that would put counterparty balance under holder-announced channel reserve value".to_string(), 1);
1725 fn test_chan_reserve_violation_inbound_htlc_outbound_channel() {
1726 let mut chanmon_cfgs = create_chanmon_cfgs(2);
1727 // Set the fee rate for the channel very high, to the point where the funder
1728 // receiving 1 update_add_htlc would result in them closing the channel due
1729 // to channel reserve violation. This close could also happen if the fee went
1730 // up a more realistic amount, but many HTLCs were outstanding at the time of
1731 // the update_add_htlc.
1732 chanmon_cfgs[0].fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 6000 };
1733 chanmon_cfgs[1].fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 6000 };
1734 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1735 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1736 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1737 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1739 let (route, payment_hash, _, payment_secret) = get_route_and_payment_hash!(nodes[1], nodes[0], 1000);
1740 // Need to manually create the update_add_htlc message to go around the channel reserve check in send_htlc()
1741 let secp_ctx = Secp256k1::new();
1742 let session_priv = SecretKey::from_slice(&[42; 32]).unwrap();
1743 let cur_height = nodes[1].node.best_block.read().unwrap().height() + 1;
1744 let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route.paths[0], &session_priv).unwrap();
1745 let (onion_payloads, htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route.paths[0], 1000, &Some(payment_secret), cur_height).unwrap();
1746 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &payment_hash);
1747 let msg = msgs::UpdateAddHTLC {
1750 amount_msat: htlc_msat + 1,
1751 payment_hash: payment_hash,
1752 cltv_expiry: htlc_cltv,
1753 onion_routing_packet: onion_packet,
1756 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &msg);
1757 // Check that the payment failed and the channel is closed in response to the malicious UpdateAdd.
1758 nodes[0].logger.assert_log("lightning::ln::channelmanager".to_string(), "Cannot accept HTLC that would put our balance under counterparty-announced channel reserve value".to_string(), 1);
1759 assert_eq!(nodes[0].node.list_channels().len(), 0);
1760 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
1761 assert_eq!(err_msg.data, "Cannot accept HTLC that would put our balance under counterparty-announced channel reserve value");
1762 check_added_monitors!(nodes[0], 1);
1766 fn test_chan_reserve_dust_inbound_htlcs_outbound_chan() {
1767 // Test that if we receive many dust HTLCs over an outbound channel, they don't count when
1768 // calculating our commitment transaction fee (this was previously broken).
1769 let chanmon_cfgs = create_chanmon_cfgs(2);
1770 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1771 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None, None]);
1772 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1774 // Set nodes[0]'s balance such that they will consider any above-dust received HTLC to be a
1775 // channel reserve violation (so their balance is channel reserve (1000 sats) + commitment
1776 // transaction fee with 0 HTLCs (183 sats)).
1777 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 98817000, InitFeatures::known(), InitFeatures::known());
1779 let dust_amt = 329000; // Dust amount
1780 // In the previous code, routing this dust payment would cause nodes[0] to perceive a channel
1781 // reserve violation even though it's a dust HTLC and therefore shouldn't count towards the
1782 // commitment transaction fee.
1783 let (_, _, _) = route_payment(&nodes[1], &[&nodes[0]], dust_amt);
1787 fn test_chan_reserve_dust_inbound_htlcs_inbound_chan() {
1788 // Test that if we receive many dust HTLCs over an inbound channel, they don't count when
1789 // calculating our counterparty's commitment transaction fee (this was previously broken).
1790 let chanmon_cfgs = create_chanmon_cfgs(2);
1791 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1792 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None, None]);
1793 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1794 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 98000000, InitFeatures::known(), InitFeatures::known());
1796 let payment_amt = 46000; // Dust amount
1797 // In the previous code, these first four payments would succeed.
1798 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1799 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1800 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1801 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1803 // Then these next 5 would be interpreted by nodes[1] as violating the fee spike buffer.
1804 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1805 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1806 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1807 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1808 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1810 // And this last payment previously resulted in nodes[1] closing on its inbound-channel
1811 // counterparty, because it counted all the previous dust HTLCs against nodes[0]'s commitment
1812 // transaction fee and therefore perceived this next payment as a channel reserve violation.
1813 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1817 fn test_chan_reserve_violation_inbound_htlc_inbound_chan() {
1818 let chanmon_cfgs = create_chanmon_cfgs(3);
1819 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1820 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1821 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1822 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1823 let _ = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1826 let total_routing_fee_msat = (nodes.len() - 2) as u64 * feemsat;
1827 let chan_stat = get_channel_value_stat!(nodes[0], chan.2);
1828 let feerate = get_feerate!(nodes[0], chan.2);
1830 // Add a 2* and +1 for the fee spike reserve.
1831 let commit_tx_fee_2_htlc = 2*commit_tx_fee_msat(feerate, 2 + 1);
1832 let recv_value_1 = (chan_stat.value_to_self_msat - chan_stat.channel_reserve_msat - total_routing_fee_msat - commit_tx_fee_2_htlc)/2;
1833 let amt_msat_1 = recv_value_1 + total_routing_fee_msat;
1835 // Add a pending HTLC.
1836 let (route_1, our_payment_hash_1, _, our_payment_secret_1) = get_route_and_payment_hash!(nodes[0], nodes[2], amt_msat_1);
1837 let payment_event_1 = {
1838 nodes[0].node.send_payment(&route_1, our_payment_hash_1, &Some(our_payment_secret_1)).unwrap();
1839 check_added_monitors!(nodes[0], 1);
1841 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1842 assert_eq!(events.len(), 1);
1843 SendEvent::from_event(events.remove(0))
1845 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event_1.msgs[0]);
1847 // Attempt to trigger a channel reserve violation --> payment failure.
1848 let commit_tx_fee_2_htlcs = commit_tx_fee_msat(feerate, 2);
1849 let recv_value_2 = chan_stat.value_to_self_msat - amt_msat_1 - chan_stat.channel_reserve_msat - total_routing_fee_msat - commit_tx_fee_2_htlcs + 1;
1850 let amt_msat_2 = recv_value_2 + total_routing_fee_msat;
1851 let (route_2, _, _, _) = get_route_and_payment_hash!(nodes[0], nodes[2], amt_msat_2);
1853 // Need to manually create the update_add_htlc message to go around the channel reserve check in send_htlc()
1854 let secp_ctx = Secp256k1::new();
1855 let session_priv = SecretKey::from_slice(&[42; 32]).unwrap();
1856 let cur_height = nodes[0].node.best_block.read().unwrap().height() + 1;
1857 let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route_2.paths[0], &session_priv).unwrap();
1858 let (onion_payloads, htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route_2.paths[0], recv_value_2, &None, cur_height).unwrap();
1859 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &our_payment_hash_1);
1860 let msg = msgs::UpdateAddHTLC {
1863 amount_msat: htlc_msat + 1,
1864 payment_hash: our_payment_hash_1,
1865 cltv_expiry: htlc_cltv,
1866 onion_routing_packet: onion_packet,
1869 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg);
1870 // Check that the payment failed and the channel is closed in response to the malicious UpdateAdd.
1871 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Remote HTLC add would put them under remote reserve value".to_string(), 1);
1872 assert_eq!(nodes[1].node.list_channels().len(), 1);
1873 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
1874 assert_eq!(err_msg.data, "Remote HTLC add would put them under remote reserve value");
1875 check_added_monitors!(nodes[1], 1);
1879 fn test_inbound_outbound_capacity_is_not_zero() {
1880 let chanmon_cfgs = create_chanmon_cfgs(2);
1881 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1882 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1883 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1884 let _ = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1885 let channels0 = node_chanmgrs[0].list_channels();
1886 let channels1 = node_chanmgrs[1].list_channels();
1887 assert_eq!(channels0.len(), 1);
1888 assert_eq!(channels1.len(), 1);
1890 assert_eq!(channels0[0].inbound_capacity_msat, 95000000);
1891 assert_eq!(channels1[0].outbound_capacity_msat, 95000000);
1893 assert_eq!(channels0[0].outbound_capacity_msat, 100000 * 1000 - 95000000);
1894 assert_eq!(channels1[0].inbound_capacity_msat, 100000 * 1000 - 95000000);
1897 fn commit_tx_fee_msat(feerate: u32, num_htlcs: u64) -> u64 {
1898 (COMMITMENT_TX_BASE_WEIGHT + num_htlcs * COMMITMENT_TX_WEIGHT_PER_HTLC) * feerate as u64 / 1000 * 1000
1902 fn test_channel_reserve_holding_cell_htlcs() {
1903 let chanmon_cfgs = create_chanmon_cfgs(3);
1904 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1905 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1906 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1907 let chan_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 190000, 1001, InitFeatures::known(), InitFeatures::known());
1908 let chan_2 = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 190000, 1001, InitFeatures::known(), InitFeatures::known());
1910 let mut stat01 = get_channel_value_stat!(nodes[0], chan_1.2);
1911 let mut stat11 = get_channel_value_stat!(nodes[1], chan_1.2);
1913 let mut stat12 = get_channel_value_stat!(nodes[1], chan_2.2);
1914 let mut stat22 = get_channel_value_stat!(nodes[2], chan_2.2);
1916 macro_rules! expect_forward {
1918 let mut events = $node.node.get_and_clear_pending_msg_events();
1919 assert_eq!(events.len(), 1);
1920 check_added_monitors!($node, 1);
1921 let payment_event = SendEvent::from_event(events.remove(0));
1926 let feemsat = 239; // somehow we know?
1927 let total_fee_msat = (nodes.len() - 2) as u64 * feemsat;
1928 let feerate = get_feerate!(nodes[0], chan_1.2);
1930 let recv_value_0 = stat01.counterparty_max_htlc_value_in_flight_msat - total_fee_msat;
1932 // attempt to send amt_msat > their_max_htlc_value_in_flight_msat
1934 let (mut route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], recv_value_0);
1935 route.paths[0].last_mut().unwrap().fee_msat += 1;
1936 assert!(route.paths[0].iter().rev().skip(1).all(|h| h.fee_msat == feemsat));
1937 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)), true, APIError::ChannelUnavailable { ref err },
1938 assert!(regex::Regex::new(r"Cannot send value that would put us over the max HTLC value in flight our peer will accept \(\d+\)").unwrap().is_match(err)));
1939 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1940 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot send value that would put us over the max HTLC value in flight our peer will accept".to_string(), 1);
1943 // channel reserve is bigger than their_max_htlc_value_in_flight_msat so loop to deplete
1944 // nodes[0]'s wealth
1946 let amt_msat = recv_value_0 + total_fee_msat;
1947 // 3 for the 3 HTLCs that will be sent, 2* and +1 for the fee spike reserve.
1948 // Also, ensure that each payment has enough to be over the dust limit to
1949 // ensure it'll be included in each commit tx fee calculation.
1950 let commit_tx_fee_all_htlcs = 2*commit_tx_fee_msat(feerate, 3 + 1);
1951 let ensure_htlc_amounts_above_dust_buffer = 3 * (stat01.counterparty_dust_limit_msat + 1000);
1952 if stat01.value_to_self_msat < stat01.channel_reserve_msat + commit_tx_fee_all_htlcs + ensure_htlc_amounts_above_dust_buffer + amt_msat {
1955 send_payment(&nodes[0], &vec![&nodes[1], &nodes[2]][..], recv_value_0);
1957 let (stat01_, stat11_, stat12_, stat22_) = (
1958 get_channel_value_stat!(nodes[0], chan_1.2),
1959 get_channel_value_stat!(nodes[1], chan_1.2),
1960 get_channel_value_stat!(nodes[1], chan_2.2),
1961 get_channel_value_stat!(nodes[2], chan_2.2),
1964 assert_eq!(stat01_.value_to_self_msat, stat01.value_to_self_msat - amt_msat);
1965 assert_eq!(stat11_.value_to_self_msat, stat11.value_to_self_msat + amt_msat);
1966 assert_eq!(stat12_.value_to_self_msat, stat12.value_to_self_msat - (amt_msat - feemsat));
1967 assert_eq!(stat22_.value_to_self_msat, stat22.value_to_self_msat + (amt_msat - feemsat));
1968 stat01 = stat01_; stat11 = stat11_; stat12 = stat12_; stat22 = stat22_;
1971 // adding pending output.
1972 // 2* and +1 HTLCs on the commit tx fee for the fee spike reserve.
1973 // The reason we're dividing by two here is as follows: the dividend is the total outbound liquidity
1974 // after fees, the channel reserve, and the fee spike buffer are removed. We eventually want to
1975 // divide this quantity into 3 portions, that will each be sent in an HTLC. This allows us
1976 // to test channel channel reserve policy at the edges of what amount is sendable, i.e.
1977 // cases where 1 msat over X amount will cause a payment failure, but anything less than
1978 // that can be sent successfully. So, dividing by two is a somewhat arbitrary way of getting
1979 // the amount of the first of these aforementioned 3 payments. The reason we split into 3 payments
1980 // is to test the behavior of the holding cell with respect to channel reserve and commit tx fee
1982 let commit_tx_fee_2_htlcs = 2*commit_tx_fee_msat(feerate, 2 + 1);
1983 let recv_value_1 = (stat01.value_to_self_msat - stat01.channel_reserve_msat - total_fee_msat - commit_tx_fee_2_htlcs)/2;
1984 let amt_msat_1 = recv_value_1 + total_fee_msat;
1986 let (route_1, our_payment_hash_1, our_payment_preimage_1, our_payment_secret_1) = get_route_and_payment_hash!(nodes[0], nodes[2], recv_value_1);
1987 let payment_event_1 = {
1988 nodes[0].node.send_payment(&route_1, our_payment_hash_1, &Some(our_payment_secret_1)).unwrap();
1989 check_added_monitors!(nodes[0], 1);
1991 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1992 assert_eq!(events.len(), 1);
1993 SendEvent::from_event(events.remove(0))
1995 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event_1.msgs[0]);
1997 // channel reserve test with htlc pending output > 0
1998 let recv_value_2 = stat01.value_to_self_msat - amt_msat_1 - stat01.channel_reserve_msat - total_fee_msat - commit_tx_fee_2_htlcs;
2000 let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], recv_value_2 + 1);
2001 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)), true, APIError::ChannelUnavailable { ref err },
2002 assert!(regex::Regex::new(r"Cannot send value that would put our balance under counterparty-announced channel reserve value \(\d+\)").unwrap().is_match(err)));
2003 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2006 // split the rest to test holding cell
2007 let commit_tx_fee_3_htlcs = 2*commit_tx_fee_msat(feerate, 3 + 1);
2008 let additional_htlc_cost_msat = commit_tx_fee_3_htlcs - commit_tx_fee_2_htlcs;
2009 let recv_value_21 = recv_value_2/2 - additional_htlc_cost_msat/2;
2010 let recv_value_22 = recv_value_2 - recv_value_21 - total_fee_msat - additional_htlc_cost_msat;
2012 let stat = get_channel_value_stat!(nodes[0], chan_1.2);
2013 assert_eq!(stat.value_to_self_msat - (stat.pending_outbound_htlcs_amount_msat + recv_value_21 + recv_value_22 + total_fee_msat + total_fee_msat + commit_tx_fee_3_htlcs), stat.channel_reserve_msat);
2016 // now see if they go through on both sides
2017 let (route_21, our_payment_hash_21, our_payment_preimage_21, our_payment_secret_21) = get_route_and_payment_hash!(nodes[0], nodes[2], recv_value_21);
2018 // but this will stuck in the holding cell
2019 nodes[0].node.send_payment(&route_21, our_payment_hash_21, &Some(our_payment_secret_21)).unwrap();
2020 check_added_monitors!(nodes[0], 0);
2021 let events = nodes[0].node.get_and_clear_pending_events();
2022 assert_eq!(events.len(), 0);
2024 // test with outbound holding cell amount > 0
2026 let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], recv_value_22+1);
2027 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)), true, APIError::ChannelUnavailable { ref err },
2028 assert!(regex::Regex::new(r"Cannot send value that would put our balance under counterparty-announced channel reserve value \(\d+\)").unwrap().is_match(err)));
2029 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2030 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot send value that would put our balance under counterparty-announced channel reserve value".to_string(), 2);
2033 let (route_22, our_payment_hash_22, our_payment_preimage_22, our_payment_secret_22) = get_route_and_payment_hash!(nodes[0], nodes[2], recv_value_22);
2034 // this will also stuck in the holding cell
2035 nodes[0].node.send_payment(&route_22, our_payment_hash_22, &Some(our_payment_secret_22)).unwrap();
2036 check_added_monitors!(nodes[0], 0);
2037 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
2038 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2040 // flush the pending htlc
2041 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event_1.commitment_msg);
2042 let (as_revoke_and_ack, as_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
2043 check_added_monitors!(nodes[1], 1);
2045 // the pending htlc should be promoted to committed
2046 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_revoke_and_ack);
2047 check_added_monitors!(nodes[0], 1);
2048 let commitment_update_2 = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2050 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &as_commitment_signed);
2051 let bs_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2052 // No commitment_signed so get_event_msg's assert(len == 1) passes
2053 check_added_monitors!(nodes[0], 1);
2055 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &bs_revoke_and_ack);
2056 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2057 check_added_monitors!(nodes[1], 1);
2059 expect_pending_htlcs_forwardable!(nodes[1]);
2061 let ref payment_event_11 = expect_forward!(nodes[1]);
2062 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_11.msgs[0]);
2063 commitment_signed_dance!(nodes[2], nodes[1], payment_event_11.commitment_msg, false);
2065 expect_pending_htlcs_forwardable!(nodes[2]);
2066 expect_payment_received!(nodes[2], our_payment_hash_1, our_payment_secret_1, recv_value_1);
2068 // flush the htlcs in the holding cell
2069 assert_eq!(commitment_update_2.update_add_htlcs.len(), 2);
2070 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &commitment_update_2.update_add_htlcs[0]);
2071 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &commitment_update_2.update_add_htlcs[1]);
2072 commitment_signed_dance!(nodes[1], nodes[0], &commitment_update_2.commitment_signed, false);
2073 expect_pending_htlcs_forwardable!(nodes[1]);
2075 let ref payment_event_3 = expect_forward!(nodes[1]);
2076 assert_eq!(payment_event_3.msgs.len(), 2);
2077 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_3.msgs[0]);
2078 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_3.msgs[1]);
2080 commitment_signed_dance!(nodes[2], nodes[1], &payment_event_3.commitment_msg, false);
2081 expect_pending_htlcs_forwardable!(nodes[2]);
2083 let events = nodes[2].node.get_and_clear_pending_events();
2084 assert_eq!(events.len(), 2);
2086 Event::PaymentReceived { ref payment_hash, ref payment_preimage, ref payment_secret, amt, user_payment_id: _ } => {
2087 assert_eq!(our_payment_hash_21, *payment_hash);
2088 assert!(payment_preimage.is_none());
2089 assert_eq!(our_payment_secret_21, *payment_secret);
2090 assert_eq!(recv_value_21, amt);
2092 _ => panic!("Unexpected event"),
2095 Event::PaymentReceived { ref payment_hash, ref payment_preimage, ref payment_secret, amt, user_payment_id: _ } => {
2096 assert_eq!(our_payment_hash_22, *payment_hash);
2097 assert!(payment_preimage.is_none());
2098 assert_eq!(our_payment_secret_22, *payment_secret);
2099 assert_eq!(recv_value_22, amt);
2101 _ => panic!("Unexpected event"),
2104 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_1);
2105 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_21);
2106 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_22);
2108 let commit_tx_fee_0_htlcs = 2*commit_tx_fee_msat(feerate, 1);
2109 let recv_value_3 = commit_tx_fee_2_htlcs - commit_tx_fee_0_htlcs - total_fee_msat;
2110 send_payment(&nodes[0], &vec![&nodes[1], &nodes[2]][..], recv_value_3);
2112 let commit_tx_fee_1_htlc = 2*commit_tx_fee_msat(feerate, 1 + 1);
2113 let expected_value_to_self = stat01.value_to_self_msat - (recv_value_1 + total_fee_msat) - (recv_value_21 + total_fee_msat) - (recv_value_22 + total_fee_msat) - (recv_value_3 + total_fee_msat);
2114 let stat0 = get_channel_value_stat!(nodes[0], chan_1.2);
2115 assert_eq!(stat0.value_to_self_msat, expected_value_to_self);
2116 assert_eq!(stat0.value_to_self_msat, stat0.channel_reserve_msat + commit_tx_fee_1_htlc);
2118 let stat2 = get_channel_value_stat!(nodes[2], chan_2.2);
2119 assert_eq!(stat2.value_to_self_msat, stat22.value_to_self_msat + recv_value_1 + recv_value_21 + recv_value_22 + recv_value_3);
2123 fn channel_reserve_in_flight_removes() {
2124 // In cases where one side claims an HTLC, it thinks it has additional available funds that it
2125 // can send to its counterparty, but due to update ordering, the other side may not yet have
2126 // considered those HTLCs fully removed.
2127 // This tests that we don't count HTLCs which will not be included in the next remote
2128 // commitment transaction towards the reserve value (as it implies no commitment transaction
2129 // will be generated which violates the remote reserve value).
2130 // This was broken previously, and discovered by the chanmon_fail_consistency fuzz test.
2132 // * route two HTLCs from A to B (note that, at a high level, this test is checking that, when
2133 // you consider the values of both of these HTLCs, B may not send an HTLC back to A, but if
2134 // you only consider the value of the first HTLC, it may not),
2135 // * start routing a third HTLC from A to B,
2136 // * claim the first two HTLCs (though B will generate an update_fulfill for one, and put
2137 // the other claim in its holding cell, as it immediately goes into AwaitingRAA),
2138 // * deliver the first fulfill from B
2139 // * deliver the update_add and an RAA from A, resulting in B freeing the second holding cell
2141 // * deliver A's response CS and RAA.
2142 // This results in A having the second HTLC in AwaitingRemovedRemoteRevoke, but B having
2143 // removed it fully. B now has the push_msat plus the first two HTLCs in value.
2144 // * Now B happily sends another HTLC, potentially violating its reserve value from A's point
2145 // of view (if A counts the AwaitingRemovedRemoteRevoke HTLC).
2146 let chanmon_cfgs = create_chanmon_cfgs(2);
2147 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2148 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2149 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2150 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2151 let logger = test_utils::TestLogger::new();
2153 let b_chan_values = get_channel_value_stat!(nodes[1], chan_1.2);
2154 // Route the first two HTLCs.
2155 let (payment_preimage_1, _, _) = route_payment(&nodes[0], &[&nodes[1]], b_chan_values.channel_reserve_msat - b_chan_values.value_to_self_msat - 10000);
2156 let (payment_preimage_2, _, _) = route_payment(&nodes[0], &[&nodes[1]], 20000);
2158 // Start routing the third HTLC (this is just used to get everyone in the right state).
2159 let (payment_preimage_3, payment_hash_3, payment_secret_3) = get_payment_preimage_hash!(nodes[1]);
2161 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
2162 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
2163 nodes[0].node.send_payment(&route, payment_hash_3, &Some(payment_secret_3)).unwrap();
2164 check_added_monitors!(nodes[0], 1);
2165 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
2166 assert_eq!(events.len(), 1);
2167 SendEvent::from_event(events.remove(0))
2170 // Now claim both of the first two HTLCs on B's end, putting B in AwaitingRAA and generating an
2171 // initial fulfill/CS.
2172 assert!(nodes[1].node.claim_funds(payment_preimage_1));
2173 check_added_monitors!(nodes[1], 1);
2174 let bs_removes = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
2176 // This claim goes in B's holding cell, allowing us to have a pending B->A RAA which does not
2177 // remove the second HTLC when we send the HTLC back from B to A.
2178 assert!(nodes[1].node.claim_funds(payment_preimage_2));
2179 check_added_monitors!(nodes[1], 1);
2180 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2182 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_removes.update_fulfill_htlcs[0]);
2183 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_removes.commitment_signed);
2184 check_added_monitors!(nodes[0], 1);
2185 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2186 expect_payment_sent!(nodes[0], payment_preimage_1);
2188 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_1.msgs[0]);
2189 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send_1.commitment_msg);
2190 check_added_monitors!(nodes[1], 1);
2191 // B is already AwaitingRAA, so cant generate a CS here
2192 let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2194 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
2195 check_added_monitors!(nodes[1], 1);
2196 let bs_cs = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
2198 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
2199 check_added_monitors!(nodes[0], 1);
2200 let as_cs = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2202 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_cs.commitment_signed);
2203 check_added_monitors!(nodes[1], 1);
2204 let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2206 // The second HTLCis removed, but as A is in AwaitingRAA it can't generate a CS here, so the
2207 // RAA that B generated above doesn't fully resolve the second HTLC from A's point of view.
2208 // However, the RAA A generates here *does* fully resolve the HTLC from B's point of view (as A
2209 // can no longer broadcast a commitment transaction with it and B has the preimage so can go
2210 // on-chain as necessary).
2211 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_cs.update_fulfill_htlcs[0]);
2212 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_cs.commitment_signed);
2213 check_added_monitors!(nodes[0], 1);
2214 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2215 expect_payment_sent!(nodes[0], payment_preimage_2);
2217 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
2218 check_added_monitors!(nodes[1], 1);
2219 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2221 expect_pending_htlcs_forwardable!(nodes[1]);
2222 expect_payment_received!(nodes[1], payment_hash_3, payment_secret_3, 100000);
2224 // Note that as this RAA was generated before the delivery of the update_fulfill it shouldn't
2225 // resolve the second HTLC from A's point of view.
2226 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
2227 check_added_monitors!(nodes[0], 1);
2228 let as_cs = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2230 // Now that B doesn't have the second RAA anymore, but A still does, send a payment from B back
2231 // to A to ensure that A doesn't count the almost-removed HTLC in update_add processing.
2232 let (payment_preimage_4, payment_hash_4, payment_secret_4) = get_payment_preimage_hash!(nodes[0]);
2234 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
2235 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 10000, TEST_FINAL_CLTV, &logger).unwrap();
2236 nodes[1].node.send_payment(&route, payment_hash_4, &Some(payment_secret_4)).unwrap();
2237 check_added_monitors!(nodes[1], 1);
2238 let mut events = nodes[1].node.get_and_clear_pending_msg_events();
2239 assert_eq!(events.len(), 1);
2240 SendEvent::from_event(events.remove(0))
2243 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &send_2.msgs[0]);
2244 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &send_2.commitment_msg);
2245 check_added_monitors!(nodes[0], 1);
2246 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2248 // Now just resolve all the outstanding messages/HTLCs for completeness...
2250 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_cs.commitment_signed);
2251 check_added_monitors!(nodes[1], 1);
2252 let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2254 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
2255 check_added_monitors!(nodes[1], 1);
2257 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
2258 check_added_monitors!(nodes[0], 1);
2259 let as_cs = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2261 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_cs.commitment_signed);
2262 check_added_monitors!(nodes[1], 1);
2263 let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2265 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
2266 check_added_monitors!(nodes[0], 1);
2268 expect_pending_htlcs_forwardable!(nodes[0]);
2269 expect_payment_received!(nodes[0], payment_hash_4, payment_secret_4, 10000);
2271 claim_payment(&nodes[1], &[&nodes[0]], payment_preimage_4);
2272 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_3);
2276 fn channel_monitor_network_test() {
2277 // Simple test which builds a network of ChannelManagers, connects them to each other, and
2278 // tests that ChannelMonitor is able to recover from various states.
2279 let chanmon_cfgs = create_chanmon_cfgs(5);
2280 let node_cfgs = create_node_cfgs(5, &chanmon_cfgs);
2281 let node_chanmgrs = create_node_chanmgrs(5, &node_cfgs, &[None, None, None, None, None]);
2282 let nodes = create_network(5, &node_cfgs, &node_chanmgrs);
2284 // Create some initial channels
2285 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2286 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
2287 let chan_3 = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known());
2288 let chan_4 = create_announced_chan_between_nodes(&nodes, 3, 4, InitFeatures::known(), InitFeatures::known());
2290 // Make sure all nodes are at the same starting height
2291 connect_blocks(&nodes[0], 4*CHAN_CONFIRM_DEPTH + 1 - nodes[0].best_block_info().1);
2292 connect_blocks(&nodes[1], 4*CHAN_CONFIRM_DEPTH + 1 - nodes[1].best_block_info().1);
2293 connect_blocks(&nodes[2], 4*CHAN_CONFIRM_DEPTH + 1 - nodes[2].best_block_info().1);
2294 connect_blocks(&nodes[3], 4*CHAN_CONFIRM_DEPTH + 1 - nodes[3].best_block_info().1);
2295 connect_blocks(&nodes[4], 4*CHAN_CONFIRM_DEPTH + 1 - nodes[4].best_block_info().1);
2297 // Rebalance the network a bit by relaying one payment through all the channels...
2298 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000);
2299 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000);
2300 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000);
2301 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000);
2303 // Simple case with no pending HTLCs:
2304 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), true);
2305 check_added_monitors!(nodes[1], 1);
2306 check_closed_broadcast!(nodes[1], false);
2308 let mut node_txn = test_txn_broadcast(&nodes[1], &chan_1, None, HTLCType::NONE);
2309 assert_eq!(node_txn.len(), 1);
2310 mine_transaction(&nodes[0], &node_txn[0]);
2311 check_added_monitors!(nodes[0], 1);
2312 test_txn_broadcast(&nodes[0], &chan_1, None, HTLCType::NONE);
2314 check_closed_broadcast!(nodes[0], true);
2315 assert_eq!(nodes[0].node.list_channels().len(), 0);
2316 assert_eq!(nodes[1].node.list_channels().len(), 1);
2318 // One pending HTLC is discarded by the force-close:
2319 let payment_preimage_1 = route_payment(&nodes[1], &vec!(&nodes[2], &nodes[3])[..], 3000000).0;
2321 // Simple case of one pending HTLC to HTLC-Timeout (note that the HTLC-Timeout is not
2322 // broadcasted until we reach the timelock time).
2323 nodes[1].node.peer_disconnected(&nodes[2].node.get_our_node_id(), true);
2324 check_closed_broadcast!(nodes[1], false);
2325 check_added_monitors!(nodes[1], 1);
2327 let mut node_txn = test_txn_broadcast(&nodes[1], &chan_2, None, HTLCType::NONE);
2328 connect_blocks(&nodes[1], TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + MIN_CLTV_EXPIRY_DELTA as u32 + 1);
2329 test_txn_broadcast(&nodes[1], &chan_2, None, HTLCType::TIMEOUT);
2330 mine_transaction(&nodes[2], &node_txn[0]);
2331 check_added_monitors!(nodes[2], 1);
2332 test_txn_broadcast(&nodes[2], &chan_2, None, HTLCType::NONE);
2334 check_closed_broadcast!(nodes[2], true);
2335 assert_eq!(nodes[1].node.list_channels().len(), 0);
2336 assert_eq!(nodes[2].node.list_channels().len(), 1);
2338 macro_rules! claim_funds {
2339 ($node: expr, $prev_node: expr, $preimage: expr) => {
2341 assert!($node.node.claim_funds($preimage));
2342 check_added_monitors!($node, 1);
2344 let events = $node.node.get_and_clear_pending_msg_events();
2345 assert_eq!(events.len(), 1);
2347 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, .. } } => {
2348 assert!(update_add_htlcs.is_empty());
2349 assert!(update_fail_htlcs.is_empty());
2350 assert_eq!(*node_id, $prev_node.node.get_our_node_id());
2352 _ => panic!("Unexpected event"),
2358 // nodes[3] gets the preimage, but nodes[2] already disconnected, resulting in a nodes[2]
2359 // HTLC-Timeout and a nodes[3] claim against it (+ its own announces)
2360 nodes[2].node.peer_disconnected(&nodes[3].node.get_our_node_id(), true);
2361 check_added_monitors!(nodes[2], 1);
2362 check_closed_broadcast!(nodes[2], false);
2363 let node2_commitment_txid;
2365 let node_txn = test_txn_broadcast(&nodes[2], &chan_3, None, HTLCType::NONE);
2366 connect_blocks(&nodes[2], TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + MIN_CLTV_EXPIRY_DELTA as u32 + 1);
2367 test_txn_broadcast(&nodes[2], &chan_3, None, HTLCType::TIMEOUT);
2368 node2_commitment_txid = node_txn[0].txid();
2370 // Claim the payment on nodes[3], giving it knowledge of the preimage
2371 claim_funds!(nodes[3], nodes[2], payment_preimage_1);
2372 mine_transaction(&nodes[3], &node_txn[0]);
2373 check_added_monitors!(nodes[3], 1);
2374 check_preimage_claim(&nodes[3], &node_txn);
2376 check_closed_broadcast!(nodes[3], true);
2377 assert_eq!(nodes[2].node.list_channels().len(), 0);
2378 assert_eq!(nodes[3].node.list_channels().len(), 1);
2380 // Drop the ChannelMonitor for the previous channel to avoid it broadcasting transactions and
2381 // confusing us in the following tests.
2382 let chan_3_mon = nodes[3].chain_monitor.chain_monitor.monitors.write().unwrap().remove(&OutPoint { txid: chan_3.3.txid(), index: 0 }).unwrap();
2384 // One pending HTLC to time out:
2385 let payment_preimage_2 = route_payment(&nodes[3], &vec!(&nodes[4])[..], 3000000).0;
2386 // CLTV expires at TEST_FINAL_CLTV + 1 (current height) + 1 (added in send_payment for
2389 let (close_chan_update_1, close_chan_update_2) = {
2390 connect_blocks(&nodes[3], TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + 1);
2391 let events = nodes[3].node.get_and_clear_pending_msg_events();
2392 assert_eq!(events.len(), 2);
2393 let close_chan_update_1 = match events[0] {
2394 MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
2397 _ => panic!("Unexpected event"),
2400 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { .. }, node_id } => {
2401 assert_eq!(node_id, nodes[4].node.get_our_node_id());
2403 _ => panic!("Unexpected event"),
2405 check_added_monitors!(nodes[3], 1);
2407 // Clear bumped claiming txn spending node 2 commitment tx. Bumped txn are generated after reaching some height timer.
2409 let mut node_txn = nodes[3].tx_broadcaster.txn_broadcasted.lock().unwrap();
2410 node_txn.retain(|tx| {
2411 if tx.input[0].previous_output.txid == node2_commitment_txid {
2417 let node_txn = test_txn_broadcast(&nodes[3], &chan_4, None, HTLCType::TIMEOUT);
2419 // Claim the payment on nodes[4], giving it knowledge of the preimage
2420 claim_funds!(nodes[4], nodes[3], payment_preimage_2);
2422 connect_blocks(&nodes[4], TEST_FINAL_CLTV - CLTV_CLAIM_BUFFER + 2);
2423 let events = nodes[4].node.get_and_clear_pending_msg_events();
2424 assert_eq!(events.len(), 2);
2425 let close_chan_update_2 = match events[0] {
2426 MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
2429 _ => panic!("Unexpected event"),
2432 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { .. }, node_id } => {
2433 assert_eq!(node_id, nodes[3].node.get_our_node_id());
2435 _ => panic!("Unexpected event"),
2437 check_added_monitors!(nodes[4], 1);
2438 test_txn_broadcast(&nodes[4], &chan_4, None, HTLCType::SUCCESS);
2440 mine_transaction(&nodes[4], &node_txn[0]);
2441 check_preimage_claim(&nodes[4], &node_txn);
2442 (close_chan_update_1, close_chan_update_2)
2444 nodes[3].net_graph_msg_handler.handle_channel_update(&close_chan_update_2).unwrap();
2445 nodes[4].net_graph_msg_handler.handle_channel_update(&close_chan_update_1).unwrap();
2446 assert_eq!(nodes[3].node.list_channels().len(), 0);
2447 assert_eq!(nodes[4].node.list_channels().len(), 0);
2449 nodes[3].chain_monitor.chain_monitor.monitors.write().unwrap().insert(OutPoint { txid: chan_3.3.txid(), index: 0 }, chan_3_mon);
2453 fn test_justice_tx() {
2454 // Test justice txn built on revoked HTLC-Success tx, against both sides
2455 let mut alice_config = UserConfig::default();
2456 alice_config.channel_options.announced_channel = true;
2457 alice_config.peer_channel_config_limits.force_announced_channel_preference = false;
2458 alice_config.own_channel_config.our_to_self_delay = 6 * 24 * 5;
2459 let mut bob_config = UserConfig::default();
2460 bob_config.channel_options.announced_channel = true;
2461 bob_config.peer_channel_config_limits.force_announced_channel_preference = false;
2462 bob_config.own_channel_config.our_to_self_delay = 6 * 24 * 3;
2463 let user_cfgs = [Some(alice_config), Some(bob_config)];
2464 let mut chanmon_cfgs = create_chanmon_cfgs(2);
2465 chanmon_cfgs[0].keys_manager.disable_revocation_policy_check = true;
2466 chanmon_cfgs[1].keys_manager.disable_revocation_policy_check = true;
2467 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2468 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &user_cfgs);
2469 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2470 // Create some new channels:
2471 let chan_5 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2473 // A pending HTLC which will be revoked:
2474 let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
2475 // Get the will-be-revoked local txn from nodes[0]
2476 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_5.2);
2477 assert_eq!(revoked_local_txn.len(), 2); // First commitment tx, then HTLC tx
2478 assert_eq!(revoked_local_txn[0].input.len(), 1);
2479 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_5.3.txid());
2480 assert_eq!(revoked_local_txn[0].output.len(), 2); // Only HTLC and output back to 0 are present
2481 assert_eq!(revoked_local_txn[1].input.len(), 1);
2482 assert_eq!(revoked_local_txn[1].input[0].previous_output.txid, revoked_local_txn[0].txid());
2483 assert_eq!(revoked_local_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); // HTLC-Timeout
2484 // Revoke the old state
2485 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_3);
2488 mine_transaction(&nodes[1], &revoked_local_txn[0]);
2490 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2491 assert_eq!(node_txn.len(), 2); // ChannelMonitor: penalty tx, ChannelManager: local commitment tx
2492 assert_eq!(node_txn[0].input.len(), 2); // We should claim the revoked output and the HTLC output
2494 check_spends!(node_txn[0], revoked_local_txn[0]);
2495 node_txn.swap_remove(0);
2496 node_txn.truncate(1);
2498 check_added_monitors!(nodes[1], 1);
2499 test_txn_broadcast(&nodes[1], &chan_5, None, HTLCType::NONE);
2501 mine_transaction(&nodes[0], &revoked_local_txn[0]);
2502 connect_blocks(&nodes[0], TEST_FINAL_CLTV - 1); // Confirm blocks until the HTLC expires
2503 // Verify broadcast of revoked HTLC-timeout
2504 let node_txn = test_txn_broadcast(&nodes[0], &chan_5, Some(revoked_local_txn[0].clone()), HTLCType::TIMEOUT);
2505 check_added_monitors!(nodes[0], 1);
2506 // Broadcast revoked HTLC-timeout on node 1
2507 mine_transaction(&nodes[1], &node_txn[1]);
2508 test_revoked_htlc_claim_txn_broadcast(&nodes[1], node_txn[1].clone(), revoked_local_txn[0].clone());
2510 get_announce_close_broadcast_events(&nodes, 0, 1);
2512 assert_eq!(nodes[0].node.list_channels().len(), 0);
2513 assert_eq!(nodes[1].node.list_channels().len(), 0);
2515 // We test justice_tx build by A on B's revoked HTLC-Success tx
2516 // Create some new channels:
2517 let chan_6 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2519 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2523 // A pending HTLC which will be revoked:
2524 let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
2525 // Get the will-be-revoked local txn from B
2526 let revoked_local_txn = get_local_commitment_txn!(nodes[1], chan_6.2);
2527 assert_eq!(revoked_local_txn.len(), 1); // Only commitment tx
2528 assert_eq!(revoked_local_txn[0].input.len(), 1);
2529 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_6.3.txid());
2530 assert_eq!(revoked_local_txn[0].output.len(), 2); // Only HTLC and output back to A are present
2531 // Revoke the old state
2532 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_4);
2534 mine_transaction(&nodes[0], &revoked_local_txn[0]);
2536 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
2537 assert_eq!(node_txn.len(), 2); //ChannelMonitor: penalty tx, ChannelManager: local commitment tx
2538 assert_eq!(node_txn[0].input.len(), 1); // We claim the received HTLC output
2540 check_spends!(node_txn[0], revoked_local_txn[0]);
2541 node_txn.swap_remove(0);
2543 check_added_monitors!(nodes[0], 1);
2544 test_txn_broadcast(&nodes[0], &chan_6, None, HTLCType::NONE);
2546 mine_transaction(&nodes[1], &revoked_local_txn[0]);
2547 let node_txn = test_txn_broadcast(&nodes[1], &chan_6, Some(revoked_local_txn[0].clone()), HTLCType::SUCCESS);
2548 check_added_monitors!(nodes[1], 1);
2549 mine_transaction(&nodes[0], &node_txn[1]);
2550 test_revoked_htlc_claim_txn_broadcast(&nodes[0], node_txn[1].clone(), revoked_local_txn[0].clone());
2552 get_announce_close_broadcast_events(&nodes, 0, 1);
2553 assert_eq!(nodes[0].node.list_channels().len(), 0);
2554 assert_eq!(nodes[1].node.list_channels().len(), 0);
2558 fn revoked_output_claim() {
2559 // Simple test to ensure a node will claim a revoked output when a stale remote commitment
2560 // transaction is broadcast by its counterparty
2561 let chanmon_cfgs = create_chanmon_cfgs(2);
2562 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2563 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2564 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2565 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2566 // node[0] is gonna to revoke an old state thus node[1] should be able to claim the revoked output
2567 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
2568 assert_eq!(revoked_local_txn.len(), 1);
2569 // Only output is the full channel value back to nodes[0]:
2570 assert_eq!(revoked_local_txn[0].output.len(), 1);
2571 // Send a payment through, updating everyone's latest commitment txn
2572 send_payment(&nodes[0], &vec!(&nodes[1])[..], 5000000);
2574 // Inform nodes[1] that nodes[0] broadcast a stale tx
2575 mine_transaction(&nodes[1], &revoked_local_txn[0]);
2576 check_added_monitors!(nodes[1], 1);
2577 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2578 assert_eq!(node_txn.len(), 2); // ChannelMonitor: justice tx against revoked to_local output, ChannelManager: local commitment tx
2580 check_spends!(node_txn[0], revoked_local_txn[0]);
2581 check_spends!(node_txn[1], chan_1.3);
2583 // Inform nodes[0] that a watchtower cheated on its behalf, so it will force-close the chan
2584 mine_transaction(&nodes[0], &revoked_local_txn[0]);
2585 get_announce_close_broadcast_events(&nodes, 0, 1);
2586 check_added_monitors!(nodes[0], 1)
2590 fn claim_htlc_outputs_shared_tx() {
2591 // Node revoked old state, htlcs haven't time out yet, claim them in shared justice tx
2592 let mut chanmon_cfgs = create_chanmon_cfgs(2);
2593 chanmon_cfgs[0].keys_manager.disable_revocation_policy_check = true;
2594 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2595 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2596 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2598 // Create some new channel:
2599 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2601 // Rebalance the network to generate htlc in the two directions
2602 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
2603 // node[0] is gonna to revoke an old state thus node[1] should be able to claim both offered/received HTLC outputs on top of commitment tx
2604 let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
2605 let (_payment_preimage_2, payment_hash_2, _) = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3000000);
2607 // Get the will-be-revoked local txn from node[0]
2608 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
2609 assert_eq!(revoked_local_txn.len(), 2); // commitment tx + 1 HTLC-Timeout tx
2610 assert_eq!(revoked_local_txn[0].input.len(), 1);
2611 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
2612 assert_eq!(revoked_local_txn[1].input.len(), 1);
2613 assert_eq!(revoked_local_txn[1].input[0].previous_output.txid, revoked_local_txn[0].txid());
2614 assert_eq!(revoked_local_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); // HTLC-Timeout
2615 check_spends!(revoked_local_txn[1], revoked_local_txn[0]);
2617 //Revoke the old state
2618 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_1);
2621 mine_transaction(&nodes[0], &revoked_local_txn[0]);
2622 check_added_monitors!(nodes[0], 1);
2623 mine_transaction(&nodes[1], &revoked_local_txn[0]);
2624 check_added_monitors!(nodes[1], 1);
2625 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
2626 expect_payment_failed!(nodes[1], payment_hash_2, true);
2628 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2629 assert_eq!(node_txn.len(), 2); // ChannelMonitor: penalty tx, ChannelManager: local commitment
2631 assert_eq!(node_txn[0].input.len(), 3); // Claim the revoked output + both revoked HTLC outputs
2632 check_spends!(node_txn[0], revoked_local_txn[0]);
2634 let mut witness_lens = BTreeSet::new();
2635 witness_lens.insert(node_txn[0].input[0].witness.last().unwrap().len());
2636 witness_lens.insert(node_txn[0].input[1].witness.last().unwrap().len());
2637 witness_lens.insert(node_txn[0].input[2].witness.last().unwrap().len());
2638 assert_eq!(witness_lens.len(), 3);
2639 assert_eq!(*witness_lens.iter().skip(0).next().unwrap(), 77); // revoked to_local
2640 assert_eq!(*witness_lens.iter().skip(1).next().unwrap(), OFFERED_HTLC_SCRIPT_WEIGHT); // revoked offered HTLC
2641 assert_eq!(*witness_lens.iter().skip(2).next().unwrap(), ACCEPTED_HTLC_SCRIPT_WEIGHT); // revoked received HTLC
2643 // Next nodes[1] broadcasts its current local tx state:
2644 assert_eq!(node_txn[1].input.len(), 1);
2645 assert_eq!(node_txn[1].input[0].previous_output.txid, chan_1.3.txid()); //Spending funding tx unique txouput, tx broadcasted by ChannelManager
2647 get_announce_close_broadcast_events(&nodes, 0, 1);
2648 assert_eq!(nodes[0].node.list_channels().len(), 0);
2649 assert_eq!(nodes[1].node.list_channels().len(), 0);
2653 fn claim_htlc_outputs_single_tx() {
2654 // Node revoked old state, htlcs have timed out, claim each of them in separated justice tx
2655 let mut chanmon_cfgs = create_chanmon_cfgs(2);
2656 chanmon_cfgs[0].keys_manager.disable_revocation_policy_check = true;
2657 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2658 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2659 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2661 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2663 // Rebalance the network to generate htlc in the two directions
2664 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
2665 // node[0] is gonna to revoke an old state thus node[1] should be able to claim both offered/received HTLC outputs on top of commitment tx, but this
2666 // time as two different claim transactions as we're gonna to timeout htlc with given a high current height
2667 let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
2668 let (_payment_preimage_2, payment_hash_2, _payment_secret_2) = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3000000);
2670 // Get the will-be-revoked local txn from node[0]
2671 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
2673 //Revoke the old state
2674 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_1);
2677 confirm_transaction_at(&nodes[0], &revoked_local_txn[0], 100);
2678 check_added_monitors!(nodes[0], 1);
2679 confirm_transaction_at(&nodes[1], &revoked_local_txn[0], 100);
2680 check_added_monitors!(nodes[1], 1);
2681 expect_pending_htlcs_forwardable_ignore!(nodes[0]);
2683 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
2684 expect_payment_failed!(nodes[1], payment_hash_2, true);
2686 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2687 assert_eq!(node_txn.len(), 9);
2688 // ChannelMonitor: justice tx revoked offered htlc, justice tx revoked received htlc, justice tx revoked to_local (3)
2689 // ChannelManager: local commmitment + local HTLC-timeout (2)
2690 // ChannelMonitor: bumped justice tx, after one increase, bumps on HTLC aren't generated not being substantial anymore, bump on revoked to_local isn't generated due to more room for expiration (2)
2691 // ChannelMonitor: local commitment + local HTLC-timeout (2)
2693 // Check the pair local commitment and HTLC-timeout broadcast due to HTLC expiration
2694 assert_eq!(node_txn[0].input.len(), 1);
2695 check_spends!(node_txn[0], chan_1.3);
2696 assert_eq!(node_txn[1].input.len(), 1);
2697 let witness_script = node_txn[1].input[0].witness.last().unwrap();
2698 assert_eq!(witness_script.len(), OFFERED_HTLC_SCRIPT_WEIGHT); //Spending an offered htlc output
2699 check_spends!(node_txn[1], node_txn[0]);
2701 // Justice transactions are indices 1-2-4
2702 assert_eq!(node_txn[2].input.len(), 1);
2703 assert_eq!(node_txn[3].input.len(), 1);
2704 assert_eq!(node_txn[4].input.len(), 1);
2706 check_spends!(node_txn[2], revoked_local_txn[0]);
2707 check_spends!(node_txn[3], revoked_local_txn[0]);
2708 check_spends!(node_txn[4], revoked_local_txn[0]);
2710 let mut witness_lens = BTreeSet::new();
2711 witness_lens.insert(node_txn[2].input[0].witness.last().unwrap().len());
2712 witness_lens.insert(node_txn[3].input[0].witness.last().unwrap().len());
2713 witness_lens.insert(node_txn[4].input[0].witness.last().unwrap().len());
2714 assert_eq!(witness_lens.len(), 3);
2715 assert_eq!(*witness_lens.iter().skip(0).next().unwrap(), 77); // revoked to_local
2716 assert_eq!(*witness_lens.iter().skip(1).next().unwrap(), OFFERED_HTLC_SCRIPT_WEIGHT); // revoked offered HTLC
2717 assert_eq!(*witness_lens.iter().skip(2).next().unwrap(), ACCEPTED_HTLC_SCRIPT_WEIGHT); // revoked received HTLC
2719 get_announce_close_broadcast_events(&nodes, 0, 1);
2720 assert_eq!(nodes[0].node.list_channels().len(), 0);
2721 assert_eq!(nodes[1].node.list_channels().len(), 0);
2725 fn test_htlc_on_chain_success() {
2726 // Test that in case of a unilateral close onchain, we detect the state of output and pass
2727 // the preimage backward accordingly. So here we test that ChannelManager is
2728 // broadcasting the right event to other nodes in payment path.
2729 // We test with two HTLCs simultaneously as that was not handled correctly in the past.
2730 // A --------------------> B ----------------------> C (preimage)
2731 // First, C should claim the HTLC outputs via HTLC-Success when its own latest local
2732 // commitment transaction was broadcast.
2733 // Then, B should learn the preimage from said transactions, attempting to claim backwards
2735 // B should be able to claim via preimage if A then broadcasts its local tx.
2736 // Finally, when A sees B's latest local commitment transaction it should be able to claim
2737 // the HTLC outputs via the preimage it learned (which, once confirmed should generate a
2738 // PaymentSent event).
2740 let chanmon_cfgs = create_chanmon_cfgs(3);
2741 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
2742 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
2743 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
2745 // Create some initial channels
2746 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2747 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
2749 // Ensure all nodes are at the same height
2750 let node_max_height = nodes.iter().map(|node| node.blocks.lock().unwrap().len()).max().unwrap() as u32;
2751 connect_blocks(&nodes[0], node_max_height - nodes[0].best_block_info().1);
2752 connect_blocks(&nodes[1], node_max_height - nodes[1].best_block_info().1);
2753 connect_blocks(&nodes[2], node_max_height - nodes[2].best_block_info().1);
2755 // Rebalance the network a bit by relaying one payment through all the channels...
2756 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000);
2757 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000);
2759 let (our_payment_preimage, _payment_hash, _payment_secret) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
2760 let (our_payment_preimage_2, _payment_hash_2, _payment_secret_2) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
2762 // Broadcast legit commitment tx from C on B's chain
2763 // Broadcast HTLC Success transaction by C on received output from C's commitment tx on B's chain
2764 let commitment_tx = get_local_commitment_txn!(nodes[2], chan_2.2);
2765 assert_eq!(commitment_tx.len(), 1);
2766 check_spends!(commitment_tx[0], chan_2.3);
2767 nodes[2].node.claim_funds(our_payment_preimage);
2768 nodes[2].node.claim_funds(our_payment_preimage_2);
2769 check_added_monitors!(nodes[2], 2);
2770 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
2771 assert!(updates.update_add_htlcs.is_empty());
2772 assert!(updates.update_fail_htlcs.is_empty());
2773 assert!(updates.update_fail_malformed_htlcs.is_empty());
2774 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
2776 mine_transaction(&nodes[2], &commitment_tx[0]);
2777 check_closed_broadcast!(nodes[2], true);
2778 check_added_monitors!(nodes[2], 1);
2779 let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 3 (commitment tx, 2*htlc-success tx), ChannelMonitor : 2 (2 * HTLC-Success tx)
2780 assert_eq!(node_txn.len(), 5);
2781 assert_eq!(node_txn[0], node_txn[3]);
2782 assert_eq!(node_txn[1], node_txn[4]);
2783 assert_eq!(node_txn[2], commitment_tx[0]);
2784 check_spends!(node_txn[0], commitment_tx[0]);
2785 check_spends!(node_txn[1], commitment_tx[0]);
2786 assert_eq!(node_txn[0].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
2787 assert_eq!(node_txn[1].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
2788 assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2789 assert!(node_txn[1].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2790 assert_eq!(node_txn[0].lock_time, 0);
2791 assert_eq!(node_txn[1].lock_time, 0);
2793 // Verify that B's ChannelManager is able to extract preimage from HTLC Success tx and pass it backward
2794 let header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
2795 connect_block(&nodes[1], &Block { header, txdata: node_txn});
2796 connect_blocks(&nodes[1], TEST_FINAL_CLTV - 1); // Confirm blocks until the HTLC expires
2798 let mut added_monitors = nodes[1].chain_monitor.added_monitors.lock().unwrap();
2799 assert_eq!(added_monitors.len(), 1);
2800 assert_eq!(added_monitors[0].0.txid, chan_2.3.txid());
2801 added_monitors.clear();
2803 let events = nodes[1].node.get_and_clear_pending_msg_events();
2805 let mut added_monitors = nodes[1].chain_monitor.added_monitors.lock().unwrap();
2806 assert_eq!(added_monitors.len(), 2);
2807 assert_eq!(added_monitors[0].0.txid, chan_1.3.txid());
2808 assert_eq!(added_monitors[1].0.txid, chan_1.3.txid());
2809 added_monitors.clear();
2811 assert_eq!(events.len(), 3);
2813 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
2814 _ => panic!("Unexpected event"),
2817 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { .. }, node_id: _ } => {},
2818 _ => panic!("Unexpected event"),
2822 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, .. } } => {
2823 assert!(update_add_htlcs.is_empty());
2824 assert!(update_fail_htlcs.is_empty());
2825 assert_eq!(update_fulfill_htlcs.len(), 1);
2826 assert!(update_fail_malformed_htlcs.is_empty());
2827 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
2829 _ => panic!("Unexpected event"),
2831 macro_rules! check_tx_local_broadcast {
2832 ($node: expr, $htlc_offered: expr, $commitment_tx: expr, $chan_tx: expr) => { {
2833 let mut node_txn = $node.tx_broadcaster.txn_broadcasted.lock().unwrap();
2834 assert_eq!(node_txn.len(), 3);
2835 // Node[1]: ChannelManager: 3 (commitment tx, 2*HTLC-Timeout tx), ChannelMonitor: 2 (timeout tx)
2836 // Node[0]: ChannelManager: 3 (commtiemtn tx, 2*HTLC-Timeout tx), ChannelMonitor: 2 HTLC-timeout
2837 check_spends!(node_txn[1], $commitment_tx);
2838 check_spends!(node_txn[2], $commitment_tx);
2839 assert_ne!(node_txn[1].lock_time, 0);
2840 assert_ne!(node_txn[2].lock_time, 0);
2842 assert_eq!(node_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2843 assert_eq!(node_txn[2].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2844 assert!(node_txn[1].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2845 assert!(node_txn[2].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2847 assert_eq!(node_txn[1].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
2848 assert_eq!(node_txn[2].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
2849 assert!(node_txn[1].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
2850 assert!(node_txn[2].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
2852 check_spends!(node_txn[0], $chan_tx);
2853 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), 71);
2857 // nodes[1] now broadcasts its own local state as a fallback, suggesting an alternate
2858 // commitment transaction with a corresponding HTLC-Timeout transactions, as well as a
2859 // timeout-claim of the output that nodes[2] just claimed via success.
2860 check_tx_local_broadcast!(nodes[1], false, commitment_tx[0], chan_2.3);
2862 // Broadcast legit commitment tx from A on B's chain
2863 // Broadcast preimage tx by B on offered output from A commitment tx on A's chain
2864 let node_a_commitment_tx = get_local_commitment_txn!(nodes[0], chan_1.2);
2865 check_spends!(node_a_commitment_tx[0], chan_1.3);
2866 mine_transaction(&nodes[1], &node_a_commitment_tx[0]);
2867 check_closed_broadcast!(nodes[1], true);
2868 check_added_monitors!(nodes[1], 1);
2869 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
2870 assert_eq!(node_txn.len(), 6); // ChannelManager : 3 (commitment tx + HTLC-Sucess * 2), ChannelMonitor : 3 (HTLC-Success, 2* RBF bumps of above HTLC txn)
2871 let commitment_spend =
2872 if node_txn[0].input[0].previous_output.txid == node_a_commitment_tx[0].txid() {
2873 check_spends!(node_txn[1], commitment_tx[0]);
2874 check_spends!(node_txn[2], commitment_tx[0]);
2875 assert_ne!(node_txn[1].input[0].previous_output.vout, node_txn[2].input[0].previous_output.vout);
2878 check_spends!(node_txn[0], commitment_tx[0]);
2879 check_spends!(node_txn[1], commitment_tx[0]);
2880 assert_ne!(node_txn[0].input[0].previous_output.vout, node_txn[1].input[0].previous_output.vout);
2884 check_spends!(commitment_spend, node_a_commitment_tx[0]);
2885 assert_eq!(commitment_spend.input.len(), 2);
2886 assert_eq!(commitment_spend.input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2887 assert_eq!(commitment_spend.input[1].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2888 assert_eq!(commitment_spend.lock_time, 0);
2889 assert!(commitment_spend.output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
2890 check_spends!(node_txn[3], chan_1.3);
2891 assert_eq!(node_txn[3].input[0].witness.clone().last().unwrap().len(), 71);
2892 check_spends!(node_txn[4], node_txn[3]);
2893 check_spends!(node_txn[5], node_txn[3]);
2894 // We don't bother to check that B can claim the HTLC output on its commitment tx here as
2895 // we already checked the same situation with A.
2897 // Verify that A's ChannelManager is able to extract preimage from preimage tx and generate PaymentSent
2898 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[0].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
2899 connect_block(&nodes[0], &Block { header, txdata: vec![node_a_commitment_tx[0].clone(), commitment_spend.clone()] });
2900 connect_blocks(&nodes[0], TEST_FINAL_CLTV + MIN_CLTV_EXPIRY_DELTA as u32 - 1); // Confirm blocks until the HTLC expires
2901 check_closed_broadcast!(nodes[0], true);
2902 check_added_monitors!(nodes[0], 1);
2903 let events = nodes[0].node.get_and_clear_pending_events();
2904 assert_eq!(events.len(), 2);
2905 let mut first_claimed = false;
2906 for event in events {
2908 Event::PaymentSent { payment_preimage } => {
2909 if payment_preimage == our_payment_preimage {
2910 assert!(!first_claimed);
2911 first_claimed = true;
2913 assert_eq!(payment_preimage, our_payment_preimage_2);
2916 _ => panic!("Unexpected event"),
2919 check_tx_local_broadcast!(nodes[0], true, node_a_commitment_tx[0], chan_1.3);
2922 fn do_test_htlc_on_chain_timeout(connect_style: ConnectStyle) {
2923 // Test that in case of a unilateral close onchain, we detect the state of output and
2924 // timeout the HTLC backward accordingly. So here we test that ChannelManager is
2925 // broadcasting the right event to other nodes in payment path.
2926 // A ------------------> B ----------------------> C (timeout)
2927 // B's commitment tx C's commitment tx
2929 // B's HTLC timeout tx B's timeout tx
2931 let chanmon_cfgs = create_chanmon_cfgs(3);
2932 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
2933 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
2934 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
2935 *nodes[0].connect_style.borrow_mut() = connect_style;
2936 *nodes[1].connect_style.borrow_mut() = connect_style;
2937 *nodes[2].connect_style.borrow_mut() = connect_style;
2939 // Create some intial channels
2940 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2941 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
2943 // Rebalance the network a bit by relaying one payment thorugh all the channels...
2944 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000);
2945 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000);
2947 let (_payment_preimage, payment_hash, _payment_secret) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
2949 // Broadcast legit commitment tx from C on B's chain
2950 let commitment_tx = get_local_commitment_txn!(nodes[2], chan_2.2);
2951 check_spends!(commitment_tx[0], chan_2.3);
2952 nodes[2].node.fail_htlc_backwards(&payment_hash);
2953 check_added_monitors!(nodes[2], 0);
2954 expect_pending_htlcs_forwardable!(nodes[2]);
2955 check_added_monitors!(nodes[2], 1);
2957 let events = nodes[2].node.get_and_clear_pending_msg_events();
2958 assert_eq!(events.len(), 1);
2960 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, .. } } => {
2961 assert!(update_add_htlcs.is_empty());
2962 assert!(!update_fail_htlcs.is_empty());
2963 assert!(update_fulfill_htlcs.is_empty());
2964 assert!(update_fail_malformed_htlcs.is_empty());
2965 assert_eq!(nodes[1].node.get_our_node_id(), *node_id);
2967 _ => panic!("Unexpected event"),
2969 mine_transaction(&nodes[2], &commitment_tx[0]);
2970 check_closed_broadcast!(nodes[2], true);
2971 check_added_monitors!(nodes[2], 1);
2972 let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 1 (commitment tx)
2973 assert_eq!(node_txn.len(), 1);
2974 check_spends!(node_txn[0], chan_2.3);
2975 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), 71);
2977 // Broadcast timeout transaction by B on received output from C's commitment tx on B's chain
2978 // Verify that B's ChannelManager is able to detect that HTLC is timeout by its own tx and react backward in consequence
2979 connect_blocks(&nodes[1], 200 - nodes[2].best_block_info().1);
2980 mine_transaction(&nodes[1], &commitment_tx[0]);
2983 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2984 assert_eq!(node_txn.len(), 5); // ChannelManager : 2 (commitment tx, HTLC-Timeout tx), ChannelMonitor : 2 (local commitment tx + HTLC-timeout), 1 timeout tx
2985 assert_eq!(node_txn[0], node_txn[3]);
2986 assert_eq!(node_txn[1], node_txn[4]);
2988 check_spends!(node_txn[2], commitment_tx[0]);
2989 assert_eq!(node_txn[2].clone().input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
2991 check_spends!(node_txn[0], chan_2.3);
2992 check_spends!(node_txn[1], node_txn[0]);
2993 assert_eq!(node_txn[0].clone().input[0].witness.last().unwrap().len(), 71);
2994 assert_eq!(node_txn[1].clone().input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2996 timeout_tx = node_txn[2].clone();
3000 mine_transaction(&nodes[1], &timeout_tx);
3001 check_added_monitors!(nodes[1], 1);
3002 check_closed_broadcast!(nodes[1], true);
3004 // B will rebroadcast a fee-bumped timeout transaction here.
3005 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
3006 assert_eq!(node_txn.len(), 1);
3007 check_spends!(node_txn[0], commitment_tx[0]);
3010 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
3012 // B will rebroadcast its own holder commitment transaction here...just because
3013 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
3014 assert_eq!(node_txn.len(), 1);
3015 check_spends!(node_txn[0], chan_2.3);
3018 expect_pending_htlcs_forwardable!(nodes[1]);
3019 check_added_monitors!(nodes[1], 1);
3020 let events = nodes[1].node.get_and_clear_pending_msg_events();
3021 assert_eq!(events.len(), 1);
3023 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, .. } } => {
3024 assert!(update_add_htlcs.is_empty());
3025 assert!(!update_fail_htlcs.is_empty());
3026 assert!(update_fulfill_htlcs.is_empty());
3027 assert!(update_fail_malformed_htlcs.is_empty());
3028 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
3030 _ => panic!("Unexpected event"),
3033 // Broadcast legit commitment tx from B on A's chain
3034 let commitment_tx = get_local_commitment_txn!(nodes[1], chan_1.2);
3035 check_spends!(commitment_tx[0], chan_1.3);
3037 mine_transaction(&nodes[0], &commitment_tx[0]);
3038 connect_blocks(&nodes[0], TEST_FINAL_CLTV + MIN_CLTV_EXPIRY_DELTA as u32 - 1); // Confirm blocks until the HTLC expires
3040 check_closed_broadcast!(nodes[0], true);
3041 check_added_monitors!(nodes[0], 1);
3042 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 1 commitment tx, ChannelMonitor : 1 timeout tx
3043 assert_eq!(node_txn.len(), 2);
3044 check_spends!(node_txn[0], chan_1.3);
3045 assert_eq!(node_txn[0].clone().input[0].witness.last().unwrap().len(), 71);
3046 check_spends!(node_txn[1], commitment_tx[0]);
3047 assert_eq!(node_txn[1].clone().input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
3051 fn test_htlc_on_chain_timeout() {
3052 do_test_htlc_on_chain_timeout(ConnectStyle::BestBlockFirstSkippingBlocks);
3053 do_test_htlc_on_chain_timeout(ConnectStyle::TransactionsFirstSkippingBlocks);
3054 do_test_htlc_on_chain_timeout(ConnectStyle::FullBlockViaListen);
3058 fn test_simple_commitment_revoked_fail_backward() {
3059 // Test that in case of a revoked commitment tx, we detect the resolution of output by justice tx
3060 // and fail backward accordingly.
3062 let chanmon_cfgs = create_chanmon_cfgs(3);
3063 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
3064 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
3065 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
3067 // Create some initial channels
3068 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3069 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
3071 let (payment_preimage, _payment_hash, _payment_secret) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000);
3072 // Get the will-be-revoked local txn from nodes[2]
3073 let revoked_local_txn = get_local_commitment_txn!(nodes[2], chan_2.2);
3074 // Revoke the old state
3075 claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage);
3077 let (_, payment_hash, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000);
3079 mine_transaction(&nodes[1], &revoked_local_txn[0]);
3080 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
3081 check_added_monitors!(nodes[1], 1);
3082 check_closed_broadcast!(nodes[1], true);
3084 expect_pending_htlcs_forwardable!(nodes[1]);
3085 check_added_monitors!(nodes[1], 1);
3086 let events = nodes[1].node.get_and_clear_pending_msg_events();
3087 assert_eq!(events.len(), 1);
3089 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, ref commitment_signed, .. } } => {
3090 assert!(update_add_htlcs.is_empty());
3091 assert_eq!(update_fail_htlcs.len(), 1);
3092 assert!(update_fulfill_htlcs.is_empty());
3093 assert!(update_fail_malformed_htlcs.is_empty());
3094 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
3096 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]);
3097 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false, true);
3099 let events = nodes[0].node.get_and_clear_pending_msg_events();
3100 assert_eq!(events.len(), 1);
3102 MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
3103 _ => panic!("Unexpected event"),
3105 expect_payment_failed!(nodes[0], payment_hash, false);
3107 _ => panic!("Unexpected event"),
3111 fn do_test_commitment_revoked_fail_backward_exhaustive(deliver_bs_raa: bool, use_dust: bool, no_to_remote: bool) {
3112 // Test that if our counterparty broadcasts a revoked commitment transaction we fail all
3113 // pending HTLCs on that channel backwards even if the HTLCs aren't present in our latest
3114 // commitment transaction anymore.
3115 // To do this, we have the peer which will broadcast a revoked commitment transaction send
3116 // a number of update_fail/commitment_signed updates without ever sending the RAA in
3117 // response to our commitment_signed. This is somewhat misbehavior-y, though not
3118 // technically disallowed and we should probably handle it reasonably.
3119 // Note that this is pretty exhaustive as an outbound HTLC which we haven't yet
3120 // failed/fulfilled backwards must be in at least one of the latest two remote commitment
3122 // * Once we move it out of our holding cell/add it, we will immediately include it in a
3123 // commitment_signed (implying it will be in the latest remote commitment transaction).
3124 // * Once they remove it, we will send a (the first) commitment_signed without the HTLC,
3125 // and once they revoke the previous commitment transaction (allowing us to send a new
3126 // commitment_signed) we will be free to fail/fulfill the HTLC backwards.
3127 let chanmon_cfgs = create_chanmon_cfgs(3);
3128 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
3129 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
3130 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
3132 // Create some initial channels
3133 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3134 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
3136 let (payment_preimage, _payment_hash, _payment_secret) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], if no_to_remote { 10_000 } else { 3_000_000 });
3137 // Get the will-be-revoked local txn from nodes[2]
3138 let revoked_local_txn = get_local_commitment_txn!(nodes[2], chan_2.2);
3139 assert_eq!(revoked_local_txn[0].output.len(), if no_to_remote { 1 } else { 2 });
3140 // Revoke the old state
3141 claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage);
3143 let value = if use_dust {
3144 // The dust limit applied to HTLC outputs considers the fee of the HTLC transaction as
3145 // well, so HTLCs at exactly the dust limit will not be included in commitment txn.
3146 nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().holder_dust_limit_satoshis * 1000
3149 let (_, first_payment_hash, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], value);
3150 let (_, second_payment_hash, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], value);
3151 let (_, third_payment_hash, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], value);
3153 assert!(nodes[2].node.fail_htlc_backwards(&first_payment_hash));
3154 expect_pending_htlcs_forwardable!(nodes[2]);
3155 check_added_monitors!(nodes[2], 1);
3156 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
3157 assert!(updates.update_add_htlcs.is_empty());
3158 assert!(updates.update_fulfill_htlcs.is_empty());
3159 assert!(updates.update_fail_malformed_htlcs.is_empty());
3160 assert_eq!(updates.update_fail_htlcs.len(), 1);
3161 assert!(updates.update_fee.is_none());
3162 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
3163 let bs_raa = commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false, true, false, true);
3164 // Drop the last RAA from 3 -> 2
3166 assert!(nodes[2].node.fail_htlc_backwards(&second_payment_hash));
3167 expect_pending_htlcs_forwardable!(nodes[2]);
3168 check_added_monitors!(nodes[2], 1);
3169 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
3170 assert!(updates.update_add_htlcs.is_empty());
3171 assert!(updates.update_fulfill_htlcs.is_empty());
3172 assert!(updates.update_fail_malformed_htlcs.is_empty());
3173 assert_eq!(updates.update_fail_htlcs.len(), 1);
3174 assert!(updates.update_fee.is_none());
3175 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
3176 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &updates.commitment_signed);
3177 check_added_monitors!(nodes[1], 1);
3178 // Note that nodes[1] is in AwaitingRAA, so won't send a CS
3179 let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
3180 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa);
3181 check_added_monitors!(nodes[2], 1);
3183 assert!(nodes[2].node.fail_htlc_backwards(&third_payment_hash));
3184 expect_pending_htlcs_forwardable!(nodes[2]);
3185 check_added_monitors!(nodes[2], 1);
3186 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
3187 assert!(updates.update_add_htlcs.is_empty());
3188 assert!(updates.update_fulfill_htlcs.is_empty());
3189 assert!(updates.update_fail_malformed_htlcs.is_empty());
3190 assert_eq!(updates.update_fail_htlcs.len(), 1);
3191 assert!(updates.update_fee.is_none());
3192 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
3193 // At this point first_payment_hash has dropped out of the latest two commitment
3194 // transactions that nodes[1] is tracking...
3195 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &updates.commitment_signed);
3196 check_added_monitors!(nodes[1], 1);
3197 // Note that nodes[1] is (still) in AwaitingRAA, so won't send a CS
3198 let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
3199 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa);
3200 check_added_monitors!(nodes[2], 1);
3202 // Add a fourth HTLC, this one will get sequestered away in nodes[1]'s holding cell waiting
3203 // on nodes[2]'s RAA.
3204 let (_, fourth_payment_hash, fourth_payment_secret) = get_payment_preimage_hash!(nodes[2]);
3205 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
3206 let logger = test_utils::TestLogger::new();
3207 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
3208 nodes[1].node.send_payment(&route, fourth_payment_hash, &Some(fourth_payment_secret)).unwrap();
3209 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
3210 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
3211 check_added_monitors!(nodes[1], 0);
3214 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_raa);
3215 // One monitor for the new revocation preimage, no second on as we won't generate a new
3216 // commitment transaction for nodes[0] until process_pending_htlc_forwards().
3217 check_added_monitors!(nodes[1], 1);
3218 let events = nodes[1].node.get_and_clear_pending_events();
3219 assert_eq!(events.len(), 1);
3221 Event::PendingHTLCsForwardable { .. } => { },
3222 _ => panic!("Unexpected event"),
3224 // Deliberately don't process the pending fail-back so they all fail back at once after
3225 // block connection just like the !deliver_bs_raa case
3228 let mut failed_htlcs = HashSet::new();
3229 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
3231 mine_transaction(&nodes[1], &revoked_local_txn[0]);
3232 check_added_monitors!(nodes[1], 1);
3233 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
3235 let events = nodes[1].node.get_and_clear_pending_events();
3236 assert_eq!(events.len(), if deliver_bs_raa { 1 } else { 2 });
3238 Event::PaymentFailed { ref payment_hash, .. } => {
3239 assert_eq!(*payment_hash, fourth_payment_hash);
3241 _ => panic!("Unexpected event"),
3243 if !deliver_bs_raa {
3245 Event::PendingHTLCsForwardable { .. } => { },
3246 _ => panic!("Unexpected event"),
3249 nodes[1].node.process_pending_htlc_forwards();
3250 check_added_monitors!(nodes[1], 1);
3252 let events = nodes[1].node.get_and_clear_pending_msg_events();
3253 assert_eq!(events.len(), if deliver_bs_raa { 4 } else { 3 });
3254 match events[if deliver_bs_raa { 1 } else { 0 }] {
3255 MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {},
3256 _ => panic!("Unexpected event"),
3258 match events[if deliver_bs_raa { 2 } else { 1 }] {
3259 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { msg: msgs::ErrorMessage { channel_id, ref data } }, node_id: _ } => {
3260 assert_eq!(channel_id, chan_2.2);
3261 assert_eq!(data.as_str(), "Commitment or closing transaction was confirmed on chain.");
3263 _ => panic!("Unexpected event"),
3267 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, .. } } => {
3268 assert_eq!(nodes[2].node.get_our_node_id(), *node_id);
3269 assert_eq!(update_add_htlcs.len(), 1);
3270 assert!(update_fulfill_htlcs.is_empty());
3271 assert!(update_fail_htlcs.is_empty());
3272 assert!(update_fail_malformed_htlcs.is_empty());
3274 _ => panic!("Unexpected event"),
3277 match events[if deliver_bs_raa { 3 } else { 2 }] {
3278 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, ref commitment_signed, .. } } => {
3279 assert!(update_add_htlcs.is_empty());
3280 assert_eq!(update_fail_htlcs.len(), 3);
3281 assert!(update_fulfill_htlcs.is_empty());
3282 assert!(update_fail_malformed_htlcs.is_empty());
3283 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
3285 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]);
3286 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[1]);
3287 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[2]);
3289 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false, true);
3291 let events = nodes[0].node.get_and_clear_pending_msg_events();
3292 // If we delivered B's RAA we got an unknown preimage error, not something
3293 // that we should update our routing table for.
3294 assert_eq!(events.len(), if deliver_bs_raa { 2 } else { 3 });
3295 for event in events {
3297 MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
3298 _ => panic!("Unexpected event"),
3301 let events = nodes[0].node.get_and_clear_pending_events();
3302 assert_eq!(events.len(), 3);
3304 Event::PaymentFailed { ref payment_hash, .. } => {
3305 assert!(failed_htlcs.insert(payment_hash.0));
3307 _ => panic!("Unexpected event"),
3310 Event::PaymentFailed { ref payment_hash, .. } => {
3311 assert!(failed_htlcs.insert(payment_hash.0));
3313 _ => panic!("Unexpected event"),
3316 Event::PaymentFailed { ref payment_hash, .. } => {
3317 assert!(failed_htlcs.insert(payment_hash.0));
3319 _ => panic!("Unexpected event"),
3322 _ => panic!("Unexpected event"),
3325 assert!(failed_htlcs.contains(&first_payment_hash.0));
3326 assert!(failed_htlcs.contains(&second_payment_hash.0));
3327 assert!(failed_htlcs.contains(&third_payment_hash.0));
3331 fn test_commitment_revoked_fail_backward_exhaustive_a() {
3332 do_test_commitment_revoked_fail_backward_exhaustive(false, true, false);
3333 do_test_commitment_revoked_fail_backward_exhaustive(true, true, false);
3334 do_test_commitment_revoked_fail_backward_exhaustive(false, false, false);
3335 do_test_commitment_revoked_fail_backward_exhaustive(true, false, false);
3339 fn test_commitment_revoked_fail_backward_exhaustive_b() {
3340 do_test_commitment_revoked_fail_backward_exhaustive(false, true, true);
3341 do_test_commitment_revoked_fail_backward_exhaustive(true, true, true);
3342 do_test_commitment_revoked_fail_backward_exhaustive(false, false, true);
3343 do_test_commitment_revoked_fail_backward_exhaustive(true, false, true);
3347 fn fail_backward_pending_htlc_upon_channel_failure() {
3348 let chanmon_cfgs = create_chanmon_cfgs(2);
3349 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3350 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3351 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3352 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 500_000_000, InitFeatures::known(), InitFeatures::known());
3353 let logger = test_utils::TestLogger::new();
3355 // Alice -> Bob: Route a payment but without Bob sending revoke_and_ack.
3357 let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[1]);
3358 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3359 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 50_000, TEST_FINAL_CLTV, &logger).unwrap();
3360 nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
3361 check_added_monitors!(nodes[0], 1);
3363 let payment_event = {
3364 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
3365 assert_eq!(events.len(), 1);
3366 SendEvent::from_event(events.remove(0))
3368 assert_eq!(payment_event.node_id, nodes[1].node.get_our_node_id());
3369 assert_eq!(payment_event.msgs.len(), 1);
3372 // Alice -> Bob: Route another payment but now Alice waits for Bob's earlier revoke_and_ack.
3373 let (_, failed_payment_hash, failed_payment_secret) = get_payment_preimage_hash!(nodes[1]);
3375 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3376 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 50_000, TEST_FINAL_CLTV, &logger).unwrap();
3377 nodes[0].node.send_payment(&route, failed_payment_hash, &Some(failed_payment_secret)).unwrap();
3378 check_added_monitors!(nodes[0], 0);
3380 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
3383 // Alice <- Bob: Send a malformed update_add_htlc so Alice fails the channel.
3385 let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[0]);
3387 let secp_ctx = Secp256k1::new();
3388 let session_priv = SecretKey::from_slice(&[42; 32]).unwrap();
3389 let current_height = nodes[1].node.best_block.read().unwrap().height() + 1;
3390 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
3391 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 50_000, TEST_FINAL_CLTV, &logger).unwrap();
3392 let (onion_payloads, _amount_msat, cltv_expiry) = onion_utils::build_onion_payloads(&route.paths[0], 50_000, &Some(payment_secret), current_height).unwrap();
3393 let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route.paths[0], &session_priv).unwrap();
3394 let onion_routing_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &payment_hash);
3396 // Send a 0-msat update_add_htlc to fail the channel.
3397 let update_add_htlc = msgs::UpdateAddHTLC {
3403 onion_routing_packet,
3405 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &update_add_htlc);
3408 // Check that Alice fails backward the pending HTLC from the second payment.
3409 expect_payment_failed!(nodes[0], failed_payment_hash, true);
3410 check_closed_broadcast!(nodes[0], true);
3411 check_added_monitors!(nodes[0], 1);
3415 fn test_htlc_ignore_latest_remote_commitment() {
3416 // Test that HTLC transactions spending the latest remote commitment transaction are simply
3417 // ignored if we cannot claim them. This originally tickled an invalid unwrap().
3418 let chanmon_cfgs = create_chanmon_cfgs(2);
3419 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3420 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3421 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3422 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3424 route_payment(&nodes[0], &[&nodes[1]], 10000000);
3425 nodes[0].node.force_close_channel(&nodes[0].node.list_channels()[0].channel_id).unwrap();
3426 connect_blocks(&nodes[0], TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + 1);
3427 check_closed_broadcast!(nodes[0], true);
3428 check_added_monitors!(nodes[0], 1);
3430 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
3431 assert_eq!(node_txn.len(), 3);
3432 assert_eq!(node_txn[0], node_txn[1]);
3434 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3435 connect_block(&nodes[1], &Block { header, txdata: vec![node_txn[0].clone(), node_txn[1].clone()]});
3436 check_closed_broadcast!(nodes[1], true);
3437 check_added_monitors!(nodes[1], 1);
3439 // Duplicate the connect_block call since this may happen due to other listeners
3440 // registering new transactions
3441 header.prev_blockhash = header.block_hash();
3442 connect_block(&nodes[1], &Block { header, txdata: vec![node_txn[0].clone(), node_txn[2].clone()]});
3446 fn test_force_close_fail_back() {
3447 // Check which HTLCs are failed-backwards on channel force-closure
3448 let chanmon_cfgs = create_chanmon_cfgs(3);
3449 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
3450 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
3451 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
3452 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3453 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
3454 let logger = test_utils::TestLogger::new();
3456 let (our_payment_preimage, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[2]);
3458 let mut payment_event = {
3459 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3460 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, 42, &logger).unwrap();
3461 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
3462 check_added_monitors!(nodes[0], 1);
3464 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
3465 assert_eq!(events.len(), 1);
3466 SendEvent::from_event(events.remove(0))
3469 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
3470 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
3472 expect_pending_htlcs_forwardable!(nodes[1]);
3474 let mut events_2 = nodes[1].node.get_and_clear_pending_msg_events();
3475 assert_eq!(events_2.len(), 1);
3476 payment_event = SendEvent::from_event(events_2.remove(0));
3477 assert_eq!(payment_event.msgs.len(), 1);
3479 check_added_monitors!(nodes[1], 1);
3480 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]);
3481 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg);
3482 check_added_monitors!(nodes[2], 1);
3483 let (_, _) = get_revoke_commit_msgs!(nodes[2], nodes[1].node.get_our_node_id());
3485 // nodes[2] now has the latest commitment transaction, but hasn't revoked its previous
3486 // state or updated nodes[1]' state. Now force-close and broadcast that commitment/HTLC
3487 // transaction and ensure nodes[1] doesn't fail-backwards (this was originally a bug!).
3489 nodes[2].node.force_close_channel(&payment_event.commitment_msg.channel_id).unwrap();
3490 check_closed_broadcast!(nodes[2], true);
3491 check_added_monitors!(nodes[2], 1);
3493 let mut node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap();
3494 // Note that we don't bother broadcasting the HTLC-Success transaction here as we don't
3495 // have a use for it unless nodes[2] learns the preimage somehow, the funds will go
3496 // back to nodes[1] upon timeout otherwise.
3497 assert_eq!(node_txn.len(), 1);
3501 mine_transaction(&nodes[1], &tx);
3503 // Note no UpdateHTLCs event here from nodes[1] to nodes[0]!
3504 check_closed_broadcast!(nodes[1], true);
3505 check_added_monitors!(nodes[1], 1);
3507 // Now check that if we add the preimage to ChannelMonitor it broadcasts our HTLC-Success..
3509 let mut monitors = nodes[2].chain_monitor.chain_monitor.monitors.read().unwrap();
3510 monitors.get(&OutPoint{ txid: Txid::from_slice(&payment_event.commitment_msg.channel_id[..]).unwrap(), index: 0 }).unwrap()
3511 .provide_payment_preimage(&our_payment_hash, &our_payment_preimage, &node_cfgs[2].tx_broadcaster, &node_cfgs[2].fee_estimator, &&logger);
3513 mine_transaction(&nodes[2], &tx);
3514 let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap();
3515 assert_eq!(node_txn.len(), 1);
3516 assert_eq!(node_txn[0].input.len(), 1);
3517 assert_eq!(node_txn[0].input[0].previous_output.txid, tx.txid());
3518 assert_eq!(node_txn[0].lock_time, 0); // Must be an HTLC-Success
3519 assert_eq!(node_txn[0].input[0].witness.len(), 5); // Must be an HTLC-Success
3521 check_spends!(node_txn[0], tx);
3525 fn test_dup_events_on_peer_disconnect() {
3526 // Test that if we receive a duplicative update_fulfill_htlc message after a reconnect we do
3527 // not generate a corresponding duplicative PaymentSent event. This did not use to be the case
3528 // as we used to generate the event immediately upon receipt of the payment preimage in the
3529 // update_fulfill_htlc message.
3531 let chanmon_cfgs = create_chanmon_cfgs(2);
3532 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3533 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3534 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3535 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3537 let payment_preimage = route_payment(&nodes[0], &[&nodes[1]], 1000000).0;
3539 assert!(nodes[1].node.claim_funds(payment_preimage));
3540 check_added_monitors!(nodes[1], 1);
3541 let claim_msgs = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
3542 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &claim_msgs.update_fulfill_htlcs[0]);
3543 expect_payment_sent!(nodes[0], payment_preimage);
3545 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3546 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3548 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (1, 0), (0, 0), (0, 0), (false, false));
3549 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
3553 fn test_simple_peer_disconnect() {
3554 // Test that we can reconnect when there are no lost messages
3555 let chanmon_cfgs = create_chanmon_cfgs(3);
3556 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
3557 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
3558 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
3559 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3560 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
3562 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3563 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3564 reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3566 let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0;
3567 let payment_hash_2 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1;
3568 fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_hash_2);
3569 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_preimage_1);
3571 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3572 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3573 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3575 let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0;
3576 let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0;
3577 let payment_hash_5 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1;
3578 let payment_hash_6 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1;
3580 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3581 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3583 claim_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[2]]], true, payment_preimage_3);
3584 fail_payment_along_route(&nodes[0], &[&nodes[1], &nodes[2]], true, payment_hash_5);
3586 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (1, 0), (1, 0), (false, false));
3588 let events = nodes[0].node.get_and_clear_pending_events();
3589 assert_eq!(events.len(), 2);
3591 Event::PaymentSent { payment_preimage } => {
3592 assert_eq!(payment_preimage, payment_preimage_3);
3594 _ => panic!("Unexpected event"),
3597 Event::PaymentFailed { payment_hash, rejected_by_dest, .. } => {
3598 assert_eq!(payment_hash, payment_hash_5);
3599 assert!(rejected_by_dest);
3601 _ => panic!("Unexpected event"),
3605 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_preimage_4);
3606 fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_hash_6);
3609 fn do_test_drop_messages_peer_disconnect(messages_delivered: u8) {
3610 // Test that we can reconnect when in-flight HTLC updates get dropped
3611 let chanmon_cfgs = create_chanmon_cfgs(2);
3612 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3613 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3614 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3615 if messages_delivered == 0 {
3616 create_chan_between_nodes_with_value_a(&nodes[0], &nodes[1], 100000, 10001, InitFeatures::known(), InitFeatures::known());
3617 // nodes[1] doesn't receive the funding_locked message (it'll be re-sent on reconnect)
3619 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3622 let (payment_preimage_1, payment_hash_1, payment_secret_1) = get_payment_preimage_hash!(nodes[1]);
3624 let logger = test_utils::TestLogger::new();
3625 let payment_event = {
3626 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3627 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(),
3628 &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), Some(&nodes[0].node.list_usable_channels().iter().collect::<Vec<_>>()),
3629 &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
3630 nodes[0].node.send_payment(&route, payment_hash_1, &Some(payment_secret_1)).unwrap();
3631 check_added_monitors!(nodes[0], 1);
3633 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
3634 assert_eq!(events.len(), 1);
3635 SendEvent::from_event(events.remove(0))
3637 assert_eq!(nodes[1].node.get_our_node_id(), payment_event.node_id);
3639 if messages_delivered < 2 {
3640 // Drop the payment_event messages, and let them get re-generated in reconnect_nodes!
3642 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
3643 if messages_delivered >= 3 {
3644 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event.commitment_msg);
3645 check_added_monitors!(nodes[1], 1);
3646 let (bs_revoke_and_ack, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
3648 if messages_delivered >= 4 {
3649 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack);
3650 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
3651 check_added_monitors!(nodes[0], 1);
3653 if messages_delivered >= 5 {
3654 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_commitment_signed);
3655 let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
3656 // No commitment_signed so get_event_msg's assert(len == 1) passes
3657 check_added_monitors!(nodes[0], 1);
3659 if messages_delivered >= 6 {
3660 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack);
3661 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
3662 check_added_monitors!(nodes[1], 1);
3669 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3670 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3671 if messages_delivered < 3 {
3672 // Even if the funding_locked messages get exchanged, as long as nothing further was
3673 // received on either side, both sides will need to resend them.
3674 reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 1), (0, 0), (0, 0), (0, 0), (false, false));
3675 } else if messages_delivered == 3 {
3676 // nodes[0] still wants its RAA + commitment_signed
3677 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (-1, 0), (0, 0), (0, 0), (0, 0), (true, false));
3678 } else if messages_delivered == 4 {
3679 // nodes[0] still wants its commitment_signed
3680 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (-1, 0), (0, 0), (0, 0), (0, 0), (false, false));
3681 } else if messages_delivered == 5 {
3682 // nodes[1] still wants its final RAA
3683 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, true));
3684 } else if messages_delivered == 6 {
3685 // Everything was delivered...
3686 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3689 let events_1 = nodes[1].node.get_and_clear_pending_events();
3690 assert_eq!(events_1.len(), 1);
3692 Event::PendingHTLCsForwardable { .. } => { },
3693 _ => panic!("Unexpected event"),
3696 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3697 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3698 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3700 nodes[1].node.process_pending_htlc_forwards();
3702 let events_2 = nodes[1].node.get_and_clear_pending_events();
3703 assert_eq!(events_2.len(), 1);
3705 Event::PaymentReceived { ref payment_hash, ref payment_preimage, ref payment_secret, amt, user_payment_id: _ } => {
3706 assert_eq!(payment_hash_1, *payment_hash);
3707 assert!(payment_preimage.is_none());
3708 assert_eq!(payment_secret_1, *payment_secret);
3709 assert_eq!(amt, 1000000);
3711 _ => panic!("Unexpected event"),
3714 nodes[1].node.claim_funds(payment_preimage_1);
3715 check_added_monitors!(nodes[1], 1);
3717 let events_3 = nodes[1].node.get_and_clear_pending_msg_events();
3718 assert_eq!(events_3.len(), 1);
3719 let (update_fulfill_htlc, commitment_signed) = match events_3[0] {
3720 MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => {
3721 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
3722 assert!(updates.update_add_htlcs.is_empty());
3723 assert!(updates.update_fail_htlcs.is_empty());
3724 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
3725 assert!(updates.update_fail_malformed_htlcs.is_empty());
3726 assert!(updates.update_fee.is_none());
3727 (updates.update_fulfill_htlcs[0].clone(), updates.commitment_signed.clone())
3729 _ => panic!("Unexpected event"),
3732 if messages_delivered >= 1 {
3733 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_htlc);
3735 let events_4 = nodes[0].node.get_and_clear_pending_events();
3736 assert_eq!(events_4.len(), 1);
3738 Event::PaymentSent { ref payment_preimage } => {
3739 assert_eq!(payment_preimage_1, *payment_preimage);
3741 _ => panic!("Unexpected event"),
3744 if messages_delivered >= 2 {
3745 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed);
3746 check_added_monitors!(nodes[0], 1);
3747 let (as_revoke_and_ack, as_commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
3749 if messages_delivered >= 3 {
3750 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack);
3751 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
3752 check_added_monitors!(nodes[1], 1);
3754 if messages_delivered >= 4 {
3755 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_signed);
3756 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
3757 // No commitment_signed so get_event_msg's assert(len == 1) passes
3758 check_added_monitors!(nodes[1], 1);
3760 if messages_delivered >= 5 {
3761 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack);
3762 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
3763 check_added_monitors!(nodes[0], 1);
3770 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3771 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3772 if messages_delivered < 2 {
3773 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (1, 0), (0, 0), (0, 0), (false, false));
3774 if messages_delivered < 1 {
3775 let events_4 = nodes[0].node.get_and_clear_pending_events();
3776 assert_eq!(events_4.len(), 1);
3778 Event::PaymentSent { ref payment_preimage } => {
3779 assert_eq!(payment_preimage_1, *payment_preimage);
3781 _ => panic!("Unexpected event"),
3784 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
3786 } else if messages_delivered == 2 {
3787 // nodes[0] still wants its RAA + commitment_signed
3788 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, -1), (0, 0), (0, 0), (0, 0), (false, true));
3789 } else if messages_delivered == 3 {
3790 // nodes[0] still wants its commitment_signed
3791 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, -1), (0, 0), (0, 0), (0, 0), (false, false));
3792 } else if messages_delivered == 4 {
3793 // nodes[1] still wants its final RAA
3794 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (true, false));
3795 } else if messages_delivered == 5 {
3796 // Everything was delivered...
3797 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3800 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3801 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3802 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3804 // Channel should still work fine...
3805 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3806 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(),
3807 &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), Some(&nodes[0].node.list_usable_channels().iter().collect::<Vec<_>>()),
3808 &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
3809 let payment_preimage_2 = send_along_route(&nodes[0], route, &[&nodes[1]], 1000000).0;
3810 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2);
3814 fn test_drop_messages_peer_disconnect_a() {
3815 do_test_drop_messages_peer_disconnect(0);
3816 do_test_drop_messages_peer_disconnect(1);
3817 do_test_drop_messages_peer_disconnect(2);
3818 do_test_drop_messages_peer_disconnect(3);
3822 fn test_drop_messages_peer_disconnect_b() {
3823 do_test_drop_messages_peer_disconnect(4);
3824 do_test_drop_messages_peer_disconnect(5);
3825 do_test_drop_messages_peer_disconnect(6);
3829 fn test_funding_peer_disconnect() {
3830 // Test that we can lock in our funding tx while disconnected
3831 let chanmon_cfgs = create_chanmon_cfgs(2);
3832 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3833 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3834 let persister: test_utils::TestPersister;
3835 let new_chain_monitor: test_utils::TestChainMonitor;
3836 let nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
3837 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3838 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001, InitFeatures::known(), InitFeatures::known());
3840 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3841 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3843 confirm_transaction(&nodes[0], &tx);
3844 let events_1 = nodes[0].node.get_and_clear_pending_msg_events();
3845 assert_eq!(events_1.len(), 1);
3847 MessageSendEvent::SendFundingLocked { ref node_id, msg: _ } => {
3848 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
3850 _ => panic!("Unexpected event"),
3853 reconnect_nodes(&nodes[0], &nodes[1], (false, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3855 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3856 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3858 confirm_transaction(&nodes[1], &tx);
3859 let events_2 = nodes[1].node.get_and_clear_pending_msg_events();
3860 assert_eq!(events_2.len(), 2);
3861 let funding_locked = match events_2[0] {
3862 MessageSendEvent::SendFundingLocked { ref node_id, ref msg } => {
3863 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
3866 _ => panic!("Unexpected event"),
3868 let bs_announcement_sigs = match events_2[1] {
3869 MessageSendEvent::SendAnnouncementSignatures { ref node_id, ref msg } => {
3870 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
3873 _ => panic!("Unexpected event"),
3876 reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3878 nodes[0].node.handle_funding_locked(&nodes[1].node.get_our_node_id(), &funding_locked);
3879 nodes[0].node.handle_announcement_signatures(&nodes[1].node.get_our_node_id(), &bs_announcement_sigs);
3880 let events_3 = nodes[0].node.get_and_clear_pending_msg_events();
3881 assert_eq!(events_3.len(), 2);
3882 let as_announcement_sigs = match events_3[0] {
3883 MessageSendEvent::SendAnnouncementSignatures { ref node_id, ref msg } => {
3884 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
3887 _ => panic!("Unexpected event"),
3889 let (as_announcement, as_update) = match events_3[1] {
3890 MessageSendEvent::BroadcastChannelAnnouncement { ref msg, ref update_msg } => {
3891 (msg.clone(), update_msg.clone())
3893 _ => panic!("Unexpected event"),
3896 nodes[1].node.handle_announcement_signatures(&nodes[0].node.get_our_node_id(), &as_announcement_sigs);
3897 let events_4 = nodes[1].node.get_and_clear_pending_msg_events();
3898 assert_eq!(events_4.len(), 1);
3899 let (_, bs_update) = match events_4[0] {
3900 MessageSendEvent::BroadcastChannelAnnouncement { ref msg, ref update_msg } => {
3901 (msg.clone(), update_msg.clone())
3903 _ => panic!("Unexpected event"),
3906 nodes[0].net_graph_msg_handler.handle_channel_announcement(&as_announcement).unwrap();
3907 nodes[0].net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
3908 nodes[0].net_graph_msg_handler.handle_channel_update(&as_update).unwrap();
3910 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3911 let logger = test_utils::TestLogger::new();
3912 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
3913 let (payment_preimage, _, _) = send_along_route(&nodes[0], route, &[&nodes[1]], 1000000);
3914 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage);
3916 // Check that after deserialization and reconnection we can still generate an identical
3917 // channel_announcement from the cached signatures.
3918 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3920 let nodes_0_serialized = nodes[0].node.encode();
3921 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
3922 nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter().next().unwrap().1.write(&mut chan_0_monitor_serialized).unwrap();
3924 persister = test_utils::TestPersister::new();
3925 let keys_manager = &chanmon_cfgs[0].keys_manager;
3926 new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), nodes[0].logger, node_cfgs[0].fee_estimator, &persister, keys_manager);
3927 nodes[0].chain_monitor = &new_chain_monitor;
3928 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
3929 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
3930 &mut chan_0_monitor_read, keys_manager).unwrap();
3931 assert!(chan_0_monitor_read.is_empty());
3933 let mut nodes_0_read = &nodes_0_serialized[..];
3934 let (_, nodes_0_deserialized_tmp) = {
3935 let mut channel_monitors = HashMap::new();
3936 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
3937 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
3938 default_config: UserConfig::default(),
3940 fee_estimator: node_cfgs[0].fee_estimator,
3941 chain_monitor: nodes[0].chain_monitor,
3942 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
3943 logger: nodes[0].logger,
3947 nodes_0_deserialized = nodes_0_deserialized_tmp;
3948 assert!(nodes_0_read.is_empty());
3950 assert!(nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
3951 nodes[0].node = &nodes_0_deserialized;
3952 check_added_monitors!(nodes[0], 1);
3954 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3956 // as_announcement should be re-generated exactly by broadcast_node_announcement.
3957 nodes[0].node.broadcast_node_announcement([0, 0, 0], [0; 32], Vec::new());
3958 let msgs = nodes[0].node.get_and_clear_pending_msg_events();
3959 let mut found_announcement = false;
3960 for event in msgs.iter() {
3962 MessageSendEvent::BroadcastChannelAnnouncement { ref msg, .. } => {
3963 if *msg == as_announcement { found_announcement = true; }
3965 MessageSendEvent::BroadcastNodeAnnouncement { .. } => {},
3966 _ => panic!("Unexpected event"),
3969 assert!(found_announcement);
3973 fn test_drop_messages_peer_disconnect_dual_htlc() {
3974 // Test that we can handle reconnecting when both sides of a channel have pending
3975 // commitment_updates when we disconnect.
3976 let chanmon_cfgs = create_chanmon_cfgs(2);
3977 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3978 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3979 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3980 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3981 let logger = test_utils::TestLogger::new();
3983 let (payment_preimage_1, _, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
3985 // Now try to send a second payment which will fail to send
3986 let (payment_preimage_2, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[1]);
3987 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3988 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
3989 nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
3990 check_added_monitors!(nodes[0], 1);
3992 let events_1 = nodes[0].node.get_and_clear_pending_msg_events();
3993 assert_eq!(events_1.len(), 1);
3995 MessageSendEvent::UpdateHTLCs { .. } => {},
3996 _ => panic!("Unexpected event"),
3999 assert!(nodes[1].node.claim_funds(payment_preimage_1));
4000 check_added_monitors!(nodes[1], 1);
4002 let events_2 = nodes[1].node.get_and_clear_pending_msg_events();
4003 assert_eq!(events_2.len(), 1);
4005 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => {
4006 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
4007 assert!(update_add_htlcs.is_empty());
4008 assert_eq!(update_fulfill_htlcs.len(), 1);
4009 assert!(update_fail_htlcs.is_empty());
4010 assert!(update_fail_malformed_htlcs.is_empty());
4011 assert!(update_fee.is_none());
4013 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_htlcs[0]);
4014 let events_3 = nodes[0].node.get_and_clear_pending_events();
4015 assert_eq!(events_3.len(), 1);
4017 Event::PaymentSent { ref payment_preimage } => {
4018 assert_eq!(*payment_preimage, payment_preimage_1);
4020 _ => panic!("Unexpected event"),
4023 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), commitment_signed);
4024 let _ = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
4025 // No commitment_signed so get_event_msg's assert(len == 1) passes
4026 check_added_monitors!(nodes[0], 1);
4028 _ => panic!("Unexpected event"),
4031 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
4032 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4034 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4035 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
4036 assert_eq!(reestablish_1.len(), 1);
4037 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4038 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
4039 assert_eq!(reestablish_2.len(), 1);
4041 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
4042 let as_resp = handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
4043 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
4044 let bs_resp = handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
4046 assert!(as_resp.0.is_none());
4047 assert!(bs_resp.0.is_none());
4049 assert!(bs_resp.1.is_none());
4050 assert!(bs_resp.2.is_none());
4052 assert!(as_resp.3 == RAACommitmentOrder::CommitmentFirst);
4054 assert_eq!(as_resp.2.as_ref().unwrap().update_add_htlcs.len(), 1);
4055 assert!(as_resp.2.as_ref().unwrap().update_fulfill_htlcs.is_empty());
4056 assert!(as_resp.2.as_ref().unwrap().update_fail_htlcs.is_empty());
4057 assert!(as_resp.2.as_ref().unwrap().update_fail_malformed_htlcs.is_empty());
4058 assert!(as_resp.2.as_ref().unwrap().update_fee.is_none());
4059 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &as_resp.2.as_ref().unwrap().update_add_htlcs[0]);
4060 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_resp.2.as_ref().unwrap().commitment_signed);
4061 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
4062 // No commitment_signed so get_event_msg's assert(len == 1) passes
4063 check_added_monitors!(nodes[1], 1);
4065 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), as_resp.1.as_ref().unwrap());
4066 let bs_second_commitment_signed = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
4067 assert!(bs_second_commitment_signed.update_add_htlcs.is_empty());
4068 assert!(bs_second_commitment_signed.update_fulfill_htlcs.is_empty());
4069 assert!(bs_second_commitment_signed.update_fail_htlcs.is_empty());
4070 assert!(bs_second_commitment_signed.update_fail_malformed_htlcs.is_empty());
4071 assert!(bs_second_commitment_signed.update_fee.is_none());
4072 check_added_monitors!(nodes[1], 1);
4074 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack);
4075 let as_commitment_signed = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
4076 assert!(as_commitment_signed.update_add_htlcs.is_empty());
4077 assert!(as_commitment_signed.update_fulfill_htlcs.is_empty());
4078 assert!(as_commitment_signed.update_fail_htlcs.is_empty());
4079 assert!(as_commitment_signed.update_fail_malformed_htlcs.is_empty());
4080 assert!(as_commitment_signed.update_fee.is_none());
4081 check_added_monitors!(nodes[0], 1);
4083 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_commitment_signed.commitment_signed);
4084 let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
4085 // No commitment_signed so get_event_msg's assert(len == 1) passes
4086 check_added_monitors!(nodes[0], 1);
4088 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_signed.commitment_signed);
4089 let bs_second_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
4090 // No commitment_signed so get_event_msg's assert(len == 1) passes
4091 check_added_monitors!(nodes[1], 1);
4093 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack);
4094 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
4095 check_added_monitors!(nodes[1], 1);
4097 expect_pending_htlcs_forwardable!(nodes[1]);
4099 let events_5 = nodes[1].node.get_and_clear_pending_events();
4100 assert_eq!(events_5.len(), 1);
4102 Event::PaymentReceived { ref payment_hash, ref payment_preimage, ref payment_secret, amt: _, user_payment_id: _ } => {
4103 assert_eq!(payment_hash_2, *payment_hash);
4104 assert!(payment_preimage.is_none());
4105 assert_eq!(payment_secret_2, *payment_secret);
4107 _ => panic!("Unexpected event"),
4110 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke_and_ack);
4111 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
4112 check_added_monitors!(nodes[0], 1);
4114 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2);
4117 fn do_test_htlc_timeout(send_partial_mpp: bool) {
4118 // If the user fails to claim/fail an HTLC within the HTLC CLTV timeout we fail it for them
4119 // to avoid our counterparty failing the channel.
4120 let chanmon_cfgs = create_chanmon_cfgs(2);
4121 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4122 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4123 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4125 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4126 let logger = test_utils::TestLogger::new();
4128 let our_payment_hash = if send_partial_mpp {
4129 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
4130 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
4131 let (_, our_payment_hash, payment_secret) = get_payment_preimage_hash!(&nodes[1]);
4132 // Use the utility function send_payment_along_path to send the payment with MPP data which
4133 // indicates there are more HTLCs coming.
4134 let cur_height = CHAN_CONFIRM_DEPTH + 1; // route_payment calls send_payment, which adds 1 to the current height. So we do the same here to match.
4135 nodes[0].node.send_payment_along_path(&route.paths[0], &our_payment_hash, &Some(payment_secret), 200000, cur_height).unwrap();
4136 check_added_monitors!(nodes[0], 1);
4137 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
4138 assert_eq!(events.len(), 1);
4139 // Now do the relevant commitment_signed/RAA dances along the path, noting that the final
4140 // hop should *not* yet generate any PaymentReceived event(s).
4141 pass_along_path(&nodes[0], &[&nodes[1]], 100000, our_payment_hash, payment_secret, events.drain(..).next().unwrap(), false);
4144 route_payment(&nodes[0], &[&nodes[1]], 100000).1
4147 let mut block = Block {
4148 header: BlockHeader { version: 0x20000000, prev_blockhash: nodes[0].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
4151 connect_block(&nodes[0], &block);
4152 connect_block(&nodes[1], &block);
4153 let block_count = TEST_FINAL_CLTV + CHAN_CONFIRM_DEPTH + 2 - CLTV_CLAIM_BUFFER - LATENCY_GRACE_PERIOD_BLOCKS;
4154 for _ in CHAN_CONFIRM_DEPTH + 2..block_count {
4155 block.header.prev_blockhash = block.block_hash();
4156 connect_block(&nodes[0], &block);
4157 connect_block(&nodes[1], &block);
4160 expect_pending_htlcs_forwardable!(nodes[1]);
4162 check_added_monitors!(nodes[1], 1);
4163 let htlc_timeout_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
4164 assert!(htlc_timeout_updates.update_add_htlcs.is_empty());
4165 assert_eq!(htlc_timeout_updates.update_fail_htlcs.len(), 1);
4166 assert!(htlc_timeout_updates.update_fail_malformed_htlcs.is_empty());
4167 assert!(htlc_timeout_updates.update_fee.is_none());
4169 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_timeout_updates.update_fail_htlcs[0]);
4170 commitment_signed_dance!(nodes[0], nodes[1], htlc_timeout_updates.commitment_signed, false);
4171 // 100_000 msat as u64, followed by the height at which we failed back above
4172 let mut expected_failure_data = byte_utils::be64_to_array(100_000).to_vec();
4173 expected_failure_data.extend_from_slice(&byte_utils::be32_to_array(block_count - 1));
4174 expect_payment_failed!(nodes[0], our_payment_hash, true, 0x4000 | 15, &expected_failure_data[..]);
4178 fn test_htlc_timeout() {
4179 do_test_htlc_timeout(true);
4180 do_test_htlc_timeout(false);
4183 fn do_test_holding_cell_htlc_add_timeouts(forwarded_htlc: bool) {
4184 // Tests that HTLCs in the holding cell are timed out after the requisite number of blocks.
4185 let chanmon_cfgs = create_chanmon_cfgs(3);
4186 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
4187 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
4188 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
4189 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4190 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
4192 // Make sure all nodes are at the same starting height
4193 connect_blocks(&nodes[0], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[0].best_block_info().1);
4194 connect_blocks(&nodes[1], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[1].best_block_info().1);
4195 connect_blocks(&nodes[2], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[2].best_block_info().1);
4197 let logger = test_utils::TestLogger::new();
4199 // Route a first payment to get the 1 -> 2 channel in awaiting_raa...
4200 let (_, first_payment_hash, first_payment_secret) = get_payment_preimage_hash!(nodes[2]);
4202 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
4203 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
4204 nodes[1].node.send_payment(&route, first_payment_hash, &Some(first_payment_secret)).unwrap();
4206 assert_eq!(nodes[1].node.get_and_clear_pending_msg_events().len(), 1);
4207 check_added_monitors!(nodes[1], 1);
4209 // Now attempt to route a second payment, which should be placed in the holding cell
4210 let (_, second_payment_hash, second_payment_secret) = get_payment_preimage_hash!(nodes[2]);
4212 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
4213 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
4214 nodes[0].node.send_payment(&route, second_payment_hash, &Some(first_payment_secret)).unwrap();
4215 check_added_monitors!(nodes[0], 1);
4216 let payment_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0));
4217 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
4218 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
4219 expect_pending_htlcs_forwardable!(nodes[1]);
4220 check_added_monitors!(nodes[1], 0);
4222 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
4223 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
4224 nodes[1].node.send_payment(&route, second_payment_hash, &Some(second_payment_secret)).unwrap();
4225 check_added_monitors!(nodes[1], 0);
4228 connect_blocks(&nodes[1], TEST_FINAL_CLTV - CLTV_CLAIM_BUFFER - LATENCY_GRACE_PERIOD_BLOCKS);
4229 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
4230 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
4231 connect_blocks(&nodes[1], 1);
4234 expect_pending_htlcs_forwardable!(nodes[1]);
4235 check_added_monitors!(nodes[1], 1);
4236 let fail_commit = nodes[1].node.get_and_clear_pending_msg_events();
4237 assert_eq!(fail_commit.len(), 1);
4238 match fail_commit[0] {
4239 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fail_htlcs, ref commitment_signed, .. }, .. } => {
4240 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]);
4241 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, true, true);
4243 _ => unreachable!(),
4245 expect_payment_failed!(nodes[0], second_payment_hash, false);
4246 if let &MessageSendEvent::PaymentFailureNetworkUpdate { ref update } = &nodes[0].node.get_and_clear_pending_msg_events()[0] {
4248 &HTLCFailChannelUpdate::ChannelUpdateMessage { .. } => {},
4249 _ => panic!("Unexpected event"),
4252 panic!("Unexpected event");
4255 expect_payment_failed!(nodes[1], second_payment_hash, true);
4260 fn test_holding_cell_htlc_add_timeouts() {
4261 do_test_holding_cell_htlc_add_timeouts(false);
4262 do_test_holding_cell_htlc_add_timeouts(true);
4266 fn test_invalid_channel_announcement() {
4267 //Test BOLT 7 channel_announcement msg requirement for final node, gather data to build customed channel_announcement msgs
4268 let secp_ctx = Secp256k1::new();
4269 let chanmon_cfgs = create_chanmon_cfgs(2);
4270 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4271 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4272 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4274 let chan_announcement = create_chan_between_nodes(&nodes[0], &nodes[1], InitFeatures::known(), InitFeatures::known());
4276 let a_channel_lock = nodes[0].node.channel_state.lock().unwrap();
4277 let b_channel_lock = nodes[1].node.channel_state.lock().unwrap();
4278 let as_chan = a_channel_lock.by_id.get(&chan_announcement.3).unwrap();
4279 let bs_chan = b_channel_lock.by_id.get(&chan_announcement.3).unwrap();
4281 nodes[0].net_graph_msg_handler.handle_htlc_fail_channel_update(&msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id : as_chan.get_short_channel_id().unwrap(), is_permanent: false } );
4283 let as_bitcoin_key = as_chan.get_signer().inner.holder_channel_pubkeys.funding_pubkey;
4284 let bs_bitcoin_key = bs_chan.get_signer().inner.holder_channel_pubkeys.funding_pubkey;
4286 let as_network_key = nodes[0].node.get_our_node_id();
4287 let bs_network_key = nodes[1].node.get_our_node_id();
4289 let were_node_one = as_bitcoin_key.serialize()[..] < bs_bitcoin_key.serialize()[..];
4291 let mut chan_announcement;
4293 macro_rules! dummy_unsigned_msg {
4295 msgs::UnsignedChannelAnnouncement {
4296 features: ChannelFeatures::known(),
4297 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
4298 short_channel_id: as_chan.get_short_channel_id().unwrap(),
4299 node_id_1: if were_node_one { as_network_key } else { bs_network_key },
4300 node_id_2: if were_node_one { bs_network_key } else { as_network_key },
4301 bitcoin_key_1: if were_node_one { as_bitcoin_key } else { bs_bitcoin_key },
4302 bitcoin_key_2: if were_node_one { bs_bitcoin_key } else { as_bitcoin_key },
4303 excess_data: Vec::new(),
4308 macro_rules! sign_msg {
4309 ($unsigned_msg: expr) => {
4310 let msghash = Message::from_slice(&Sha256dHash::hash(&$unsigned_msg.encode()[..])[..]).unwrap();
4311 let as_bitcoin_sig = secp_ctx.sign(&msghash, &as_chan.get_signer().inner.funding_key);
4312 let bs_bitcoin_sig = secp_ctx.sign(&msghash, &bs_chan.get_signer().inner.funding_key);
4313 let as_node_sig = secp_ctx.sign(&msghash, &nodes[0].keys_manager.get_node_secret());
4314 let bs_node_sig = secp_ctx.sign(&msghash, &nodes[1].keys_manager.get_node_secret());
4315 chan_announcement = msgs::ChannelAnnouncement {
4316 node_signature_1 : if were_node_one { as_node_sig } else { bs_node_sig},
4317 node_signature_2 : if were_node_one { bs_node_sig } else { as_node_sig},
4318 bitcoin_signature_1: if were_node_one { as_bitcoin_sig } else { bs_bitcoin_sig },
4319 bitcoin_signature_2 : if were_node_one { bs_bitcoin_sig } else { as_bitcoin_sig },
4320 contents: $unsigned_msg
4325 let unsigned_msg = dummy_unsigned_msg!();
4326 sign_msg!(unsigned_msg);
4327 assert_eq!(nodes[0].net_graph_msg_handler.handle_channel_announcement(&chan_announcement).unwrap(), true);
4328 let _ = nodes[0].net_graph_msg_handler.handle_htlc_fail_channel_update(&msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id : as_chan.get_short_channel_id().unwrap(), is_permanent: false } );
4330 // Configured with Network::Testnet
4331 let mut unsigned_msg = dummy_unsigned_msg!();
4332 unsigned_msg.chain_hash = genesis_block(Network::Bitcoin).header.block_hash();
4333 sign_msg!(unsigned_msg);
4334 assert!(nodes[0].net_graph_msg_handler.handle_channel_announcement(&chan_announcement).is_err());
4336 let mut unsigned_msg = dummy_unsigned_msg!();
4337 unsigned_msg.chain_hash = BlockHash::hash(&[1,2,3,4,5,6,7,8,9]);
4338 sign_msg!(unsigned_msg);
4339 assert!(nodes[0].net_graph_msg_handler.handle_channel_announcement(&chan_announcement).is_err());
4343 fn test_no_txn_manager_serialize_deserialize() {
4344 let chanmon_cfgs = create_chanmon_cfgs(2);
4345 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4346 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4347 let logger: test_utils::TestLogger;
4348 let fee_estimator: test_utils::TestFeeEstimator;
4349 let persister: test_utils::TestPersister;
4350 let new_chain_monitor: test_utils::TestChainMonitor;
4351 let nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
4352 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4354 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001, InitFeatures::known(), InitFeatures::known());
4356 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4358 let nodes_0_serialized = nodes[0].node.encode();
4359 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
4360 nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter().next().unwrap().1.write(&mut chan_0_monitor_serialized).unwrap();
4362 logger = test_utils::TestLogger::new();
4363 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
4364 persister = test_utils::TestPersister::new();
4365 let keys_manager = &chanmon_cfgs[0].keys_manager;
4366 new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator, &persister, keys_manager);
4367 nodes[0].chain_monitor = &new_chain_monitor;
4368 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
4369 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
4370 &mut chan_0_monitor_read, keys_manager).unwrap();
4371 assert!(chan_0_monitor_read.is_empty());
4373 let mut nodes_0_read = &nodes_0_serialized[..];
4374 let config = UserConfig::default();
4375 let (_, nodes_0_deserialized_tmp) = {
4376 let mut channel_monitors = HashMap::new();
4377 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
4378 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4379 default_config: config,
4381 fee_estimator: &fee_estimator,
4382 chain_monitor: nodes[0].chain_monitor,
4383 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4388 nodes_0_deserialized = nodes_0_deserialized_tmp;
4389 assert!(nodes_0_read.is_empty());
4391 assert!(nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
4392 nodes[0].node = &nodes_0_deserialized;
4393 assert_eq!(nodes[0].node.list_channels().len(), 1);
4394 check_added_monitors!(nodes[0], 1);
4396 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4397 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
4398 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4399 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
4401 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
4402 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
4403 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
4404 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
4406 let (funding_locked, _) = create_chan_between_nodes_with_value_confirm(&nodes[0], &nodes[1], &tx);
4407 let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_locked);
4408 for node in nodes.iter() {
4409 assert!(node.net_graph_msg_handler.handle_channel_announcement(&announcement).unwrap());
4410 node.net_graph_msg_handler.handle_channel_update(&as_update).unwrap();
4411 node.net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
4414 send_payment(&nodes[0], &[&nodes[1]], 1000000);
4418 fn test_dup_htlc_onchain_fails_on_reload() {
4419 // When a Channel is closed, any outbound HTLCs which were relayed through it are simply
4420 // dropped when the Channel is. From there, the ChannelManager relies on the ChannelMonitor
4421 // having a copy of the relevant fail-/claim-back data and processes the HTLC fail/claim when
4422 // the ChannelMonitor tells it to.
4424 // If, due to an on-chain event, an HTLC is failed/claimed, and then we serialize the
4425 // ChannelManager, we generally expect there not to be a duplicate HTLC fail/claim (eg via a
4426 // PaymentFailed event appearing). However, because we may not serialize the relevant
4427 // ChannelMonitor at the same time, this isn't strictly guaranteed. In order to provide this
4428 // consistency, the ChannelManager explicitly tracks pending-onchain-resolution outbound HTLCs
4429 // and de-duplicates ChannelMonitor events.
4431 // This tests that explicit tracking behavior.
4432 let chanmon_cfgs = create_chanmon_cfgs(2);
4433 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4434 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4435 let persister: test_utils::TestPersister;
4436 let new_chain_monitor: test_utils::TestChainMonitor;
4437 let nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
4438 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4440 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4442 // Route a payment, but force-close the channel before the HTLC fulfill message arrives at
4444 let (payment_preimage, _, _) = route_payment(&nodes[0], &[&nodes[1]], 10000000);
4445 nodes[0].node.force_close_channel(&nodes[0].node.list_channels()[0].channel_id).unwrap();
4446 check_closed_broadcast!(nodes[0], true);
4447 check_added_monitors!(nodes[0], 1);
4449 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
4450 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4452 // Connect blocks until the CLTV timeout is up so that we get an HTLC-Timeout transaction
4453 connect_blocks(&nodes[0], TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + 1);
4454 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
4455 assert_eq!(node_txn.len(), 3);
4456 assert_eq!(node_txn[0], node_txn[1]);
4458 assert!(nodes[1].node.claim_funds(payment_preimage));
4459 check_added_monitors!(nodes[1], 1);
4461 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4462 connect_block(&nodes[1], &Block { header, txdata: vec![node_txn[1].clone(), node_txn[2].clone()]});
4463 check_closed_broadcast!(nodes[1], true);
4464 check_added_monitors!(nodes[1], 1);
4465 let claim_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
4467 header.prev_blockhash = nodes[0].best_block_hash();
4468 connect_block(&nodes[0], &Block { header, txdata: vec![node_txn[1].clone(), node_txn[2].clone()]});
4470 // Serialize out the ChannelMonitor before connecting the on-chain claim transactions. This is
4471 // fairly normal behavior as ChannelMonitor(s) are often not re-serialized when on-chain events
4472 // happen, unlike ChannelManager which tends to be re-serialized after any relevant event(s).
4473 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
4474 nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter().next().unwrap().1.write(&mut chan_0_monitor_serialized).unwrap();
4476 header.prev_blockhash = nodes[0].best_block_hash();
4477 let claim_block = Block { header, txdata: claim_txn};
4478 connect_block(&nodes[0], &claim_block);
4479 expect_payment_sent!(nodes[0], payment_preimage);
4481 // ChannelManagers generally get re-serialized after any relevant event(s). Since we just
4482 // connected a highly-relevant block, it likely gets serialized out now.
4483 let mut chan_manager_serialized = test_utils::TestVecWriter(Vec::new());
4484 nodes[0].node.write(&mut chan_manager_serialized).unwrap();
4486 // Now reload nodes[0]...
4487 persister = test_utils::TestPersister::new();
4488 let keys_manager = &chanmon_cfgs[0].keys_manager;
4489 new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), nodes[0].logger, node_cfgs[0].fee_estimator, &persister, keys_manager);
4490 nodes[0].chain_monitor = &new_chain_monitor;
4491 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
4492 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
4493 &mut chan_0_monitor_read, keys_manager).unwrap();
4494 assert!(chan_0_monitor_read.is_empty());
4496 let (_, nodes_0_deserialized_tmp) = {
4497 let mut channel_monitors = HashMap::new();
4498 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
4499 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>
4500 ::read(&mut std::io::Cursor::new(&chan_manager_serialized.0[..]), ChannelManagerReadArgs {
4501 default_config: Default::default(),
4503 fee_estimator: node_cfgs[0].fee_estimator,
4504 chain_monitor: nodes[0].chain_monitor,
4505 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4506 logger: nodes[0].logger,
4510 nodes_0_deserialized = nodes_0_deserialized_tmp;
4512 assert!(nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
4513 check_added_monitors!(nodes[0], 1);
4514 nodes[0].node = &nodes_0_deserialized;
4516 // Note that if we re-connect the block which exposed nodes[0] to the payment preimage (but
4517 // which the current ChannelMonitor has not seen), the ChannelManager's de-duplication of
4518 // payment events should kick in, leaving us with no pending events here.
4519 let height = nodes[0].blocks.lock().unwrap().len() as u32 - 1;
4520 nodes[0].chain_monitor.chain_monitor.block_connected(&claim_block, height);
4521 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
4525 fn test_manager_serialize_deserialize_events() {
4526 // This test makes sure the events field in ChannelManager survives de/serialization
4527 let chanmon_cfgs = create_chanmon_cfgs(2);
4528 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4529 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4530 let fee_estimator: test_utils::TestFeeEstimator;
4531 let persister: test_utils::TestPersister;
4532 let logger: test_utils::TestLogger;
4533 let new_chain_monitor: test_utils::TestChainMonitor;
4534 let nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
4535 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4537 // Start creating a channel, but stop right before broadcasting the funding transaction
4538 let channel_value = 100000;
4539 let push_msat = 10001;
4540 let a_flags = InitFeatures::known();
4541 let b_flags = InitFeatures::known();
4542 let node_a = nodes.remove(0);
4543 let node_b = nodes.remove(0);
4544 node_a.node.create_channel(node_b.node.get_our_node_id(), channel_value, push_msat, 42, None).unwrap();
4545 node_b.node.handle_open_channel(&node_a.node.get_our_node_id(), a_flags, &get_event_msg!(node_a, MessageSendEvent::SendOpenChannel, node_b.node.get_our_node_id()));
4546 node_a.node.handle_accept_channel(&node_b.node.get_our_node_id(), b_flags, &get_event_msg!(node_b, MessageSendEvent::SendAcceptChannel, node_a.node.get_our_node_id()));
4548 let (temporary_channel_id, tx, funding_output) = create_funding_transaction(&node_a, channel_value, 42);
4550 node_a.node.funding_transaction_generated(&temporary_channel_id, tx.clone()).unwrap();
4551 check_added_monitors!(node_a, 0);
4553 node_b.node.handle_funding_created(&node_a.node.get_our_node_id(), &get_event_msg!(node_a, MessageSendEvent::SendFundingCreated, node_b.node.get_our_node_id()));
4555 let mut added_monitors = node_b.chain_monitor.added_monitors.lock().unwrap();
4556 assert_eq!(added_monitors.len(), 1);
4557 assert_eq!(added_monitors[0].0, funding_output);
4558 added_monitors.clear();
4561 node_a.node.handle_funding_signed(&node_b.node.get_our_node_id(), &get_event_msg!(node_b, MessageSendEvent::SendFundingSigned, node_a.node.get_our_node_id()));
4563 let mut added_monitors = node_a.chain_monitor.added_monitors.lock().unwrap();
4564 assert_eq!(added_monitors.len(), 1);
4565 assert_eq!(added_monitors[0].0, funding_output);
4566 added_monitors.clear();
4568 // Normally, this is where node_a would broadcast the funding transaction, but the test de/serializes first instead
4573 // Start the de/seriailization process mid-channel creation to check that the channel manager will hold onto events that are serialized
4574 let nodes_0_serialized = nodes[0].node.encode();
4575 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
4576 nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter().next().unwrap().1.write(&mut chan_0_monitor_serialized).unwrap();
4578 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
4579 logger = test_utils::TestLogger::new();
4580 persister = test_utils::TestPersister::new();
4581 let keys_manager = &chanmon_cfgs[0].keys_manager;
4582 new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator, &persister, keys_manager);
4583 nodes[0].chain_monitor = &new_chain_monitor;
4584 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
4585 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
4586 &mut chan_0_monitor_read, keys_manager).unwrap();
4587 assert!(chan_0_monitor_read.is_empty());
4589 let mut nodes_0_read = &nodes_0_serialized[..];
4590 let config = UserConfig::default();
4591 let (_, nodes_0_deserialized_tmp) = {
4592 let mut channel_monitors = HashMap::new();
4593 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
4594 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4595 default_config: config,
4597 fee_estimator: &fee_estimator,
4598 chain_monitor: nodes[0].chain_monitor,
4599 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4604 nodes_0_deserialized = nodes_0_deserialized_tmp;
4605 assert!(nodes_0_read.is_empty());
4607 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4609 assert!(nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
4610 nodes[0].node = &nodes_0_deserialized;
4612 // After deserializing, make sure the funding_transaction is still held by the channel manager
4613 let events_4 = nodes[0].node.get_and_clear_pending_events();
4614 assert_eq!(events_4.len(), 0);
4615 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
4616 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap()[0].txid(), funding_output.txid);
4618 // Make sure the channel is functioning as though the de/serialization never happened
4619 assert_eq!(nodes[0].node.list_channels().len(), 1);
4620 check_added_monitors!(nodes[0], 1);
4622 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4623 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
4624 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4625 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
4627 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
4628 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
4629 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
4630 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
4632 let (funding_locked, _) = create_chan_between_nodes_with_value_confirm(&nodes[0], &nodes[1], &tx);
4633 let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_locked);
4634 for node in nodes.iter() {
4635 assert!(node.net_graph_msg_handler.handle_channel_announcement(&announcement).unwrap());
4636 node.net_graph_msg_handler.handle_channel_update(&as_update).unwrap();
4637 node.net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
4640 send_payment(&nodes[0], &[&nodes[1]], 1000000);
4644 fn test_simple_manager_serialize_deserialize() {
4645 let chanmon_cfgs = create_chanmon_cfgs(2);
4646 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4647 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4648 let logger: test_utils::TestLogger;
4649 let fee_estimator: test_utils::TestFeeEstimator;
4650 let persister: test_utils::TestPersister;
4651 let new_chain_monitor: test_utils::TestChainMonitor;
4652 let nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
4653 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4654 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4656 let (our_payment_preimage, _, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
4657 let (_, our_payment_hash, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
4659 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4661 let nodes_0_serialized = nodes[0].node.encode();
4662 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
4663 nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter().next().unwrap().1.write(&mut chan_0_monitor_serialized).unwrap();
4665 logger = test_utils::TestLogger::new();
4666 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
4667 persister = test_utils::TestPersister::new();
4668 let keys_manager = &chanmon_cfgs[0].keys_manager;
4669 new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator, &persister, keys_manager);
4670 nodes[0].chain_monitor = &new_chain_monitor;
4671 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
4672 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
4673 &mut chan_0_monitor_read, keys_manager).unwrap();
4674 assert!(chan_0_monitor_read.is_empty());
4676 let mut nodes_0_read = &nodes_0_serialized[..];
4677 let (_, nodes_0_deserialized_tmp) = {
4678 let mut channel_monitors = HashMap::new();
4679 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
4680 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4681 default_config: UserConfig::default(),
4683 fee_estimator: &fee_estimator,
4684 chain_monitor: nodes[0].chain_monitor,
4685 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4690 nodes_0_deserialized = nodes_0_deserialized_tmp;
4691 assert!(nodes_0_read.is_empty());
4693 assert!(nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
4694 nodes[0].node = &nodes_0_deserialized;
4695 check_added_monitors!(nodes[0], 1);
4697 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
4699 fail_payment(&nodes[0], &[&nodes[1]], our_payment_hash);
4700 claim_payment(&nodes[0], &[&nodes[1]], our_payment_preimage);
4704 fn test_manager_serialize_deserialize_inconsistent_monitor() {
4705 // Test deserializing a ChannelManager with an out-of-date ChannelMonitor
4706 let chanmon_cfgs = create_chanmon_cfgs(4);
4707 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
4708 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
4709 let logger: test_utils::TestLogger;
4710 let fee_estimator: test_utils::TestFeeEstimator;
4711 let persister: test_utils::TestPersister;
4712 let new_chain_monitor: test_utils::TestChainMonitor;
4713 let nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
4714 let mut nodes = create_network(4, &node_cfgs, &node_chanmgrs);
4715 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4716 create_announced_chan_between_nodes(&nodes, 2, 0, InitFeatures::known(), InitFeatures::known());
4717 let (_, _, channel_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 3, InitFeatures::known(), InitFeatures::known());
4719 let mut node_0_stale_monitors_serialized = Vec::new();
4720 for monitor in nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter() {
4721 let mut writer = test_utils::TestVecWriter(Vec::new());
4722 monitor.1.write(&mut writer).unwrap();
4723 node_0_stale_monitors_serialized.push(writer.0);
4726 let (our_payment_preimage, _, _) = route_payment(&nodes[2], &[&nodes[0], &nodes[1]], 1000000);
4728 // Serialize the ChannelManager here, but the monitor we keep up-to-date
4729 let nodes_0_serialized = nodes[0].node.encode();
4731 route_payment(&nodes[0], &[&nodes[3]], 1000000);
4732 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4733 nodes[2].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4734 nodes[3].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4736 // Now the ChannelMonitor (which is now out-of-sync with ChannelManager for channel w/
4738 let mut node_0_monitors_serialized = Vec::new();
4739 for monitor in nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter() {
4740 let mut writer = test_utils::TestVecWriter(Vec::new());
4741 monitor.1.write(&mut writer).unwrap();
4742 node_0_monitors_serialized.push(writer.0);
4745 logger = test_utils::TestLogger::new();
4746 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
4747 persister = test_utils::TestPersister::new();
4748 let keys_manager = &chanmon_cfgs[0].keys_manager;
4749 new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator, &persister, keys_manager);
4750 nodes[0].chain_monitor = &new_chain_monitor;
4753 let mut node_0_stale_monitors = Vec::new();
4754 for serialized in node_0_stale_monitors_serialized.iter() {
4755 let mut read = &serialized[..];
4756 let (_, monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(&mut read, keys_manager).unwrap();
4757 assert!(read.is_empty());
4758 node_0_stale_monitors.push(monitor);
4761 let mut node_0_monitors = Vec::new();
4762 for serialized in node_0_monitors_serialized.iter() {
4763 let mut read = &serialized[..];
4764 let (_, monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(&mut read, keys_manager).unwrap();
4765 assert!(read.is_empty());
4766 node_0_monitors.push(monitor);
4769 let mut nodes_0_read = &nodes_0_serialized[..];
4770 if let Err(msgs::DecodeError::InvalidValue) =
4771 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4772 default_config: UserConfig::default(),
4774 fee_estimator: &fee_estimator,
4775 chain_monitor: nodes[0].chain_monitor,
4776 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4778 channel_monitors: node_0_stale_monitors.iter_mut().map(|monitor| { (monitor.get_funding_txo().0, monitor) }).collect(),
4780 panic!("If the monitor(s) are stale, this indicates a bug and we should get an Err return");
4783 let mut nodes_0_read = &nodes_0_serialized[..];
4784 let (_, nodes_0_deserialized_tmp) =
4785 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4786 default_config: UserConfig::default(),
4788 fee_estimator: &fee_estimator,
4789 chain_monitor: nodes[0].chain_monitor,
4790 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4792 channel_monitors: node_0_monitors.iter_mut().map(|monitor| { (monitor.get_funding_txo().0, monitor) }).collect(),
4794 nodes_0_deserialized = nodes_0_deserialized_tmp;
4795 assert!(nodes_0_read.is_empty());
4797 { // Channel close should result in a commitment tx
4798 let txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
4799 assert_eq!(txn.len(), 1);
4800 check_spends!(txn[0], funding_tx);
4801 assert_eq!(txn[0].input[0].previous_output.txid, funding_tx.txid());
4804 for monitor in node_0_monitors.drain(..) {
4805 assert!(nodes[0].chain_monitor.watch_channel(monitor.get_funding_txo().0, monitor).is_ok());
4806 check_added_monitors!(nodes[0], 1);
4808 nodes[0].node = &nodes_0_deserialized;
4810 // nodes[1] and nodes[2] have no lost state with nodes[0]...
4811 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
4812 reconnect_nodes(&nodes[0], &nodes[2], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
4813 //... and we can even still claim the payment!
4814 claim_payment(&nodes[2], &[&nodes[0], &nodes[1]], our_payment_preimage);
4816 nodes[3].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4817 let reestablish = get_event_msg!(nodes[3], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
4818 nodes[0].node.peer_connected(&nodes[3].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4819 nodes[0].node.handle_channel_reestablish(&nodes[3].node.get_our_node_id(), &reestablish);
4820 let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
4821 assert_eq!(msg_events.len(), 1);
4822 if let MessageSendEvent::HandleError { ref action, .. } = msg_events[0] {
4824 &ErrorAction::SendErrorMessage { ref msg } => {
4825 assert_eq!(msg.channel_id, channel_id);
4827 _ => panic!("Unexpected event!"),
4832 macro_rules! check_spendable_outputs {
4833 ($node: expr, $der_idx: expr, $keysinterface: expr, $chan_value: expr) => {
4835 let mut events = $node.chain_monitor.chain_monitor.get_and_clear_pending_events();
4836 let mut txn = Vec::new();
4837 let mut all_outputs = Vec::new();
4838 let secp_ctx = Secp256k1::new();
4839 for event in events.drain(..) {
4841 Event::SpendableOutputs { mut outputs } => {
4842 for outp in outputs.drain(..) {
4843 txn.push($keysinterface.backing.spend_spendable_outputs(&[&outp], Vec::new(), Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(), 253, &secp_ctx).unwrap());
4844 all_outputs.push(outp);
4847 _ => panic!("Unexpected event"),
4850 if all_outputs.len() > 1 {
4851 if let Ok(tx) = $keysinterface.backing.spend_spendable_outputs(&all_outputs.iter().map(|a| a).collect::<Vec<_>>(), Vec::new(), Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(), 253, &secp_ctx) {
4861 fn test_claim_sizeable_push_msat() {
4862 // Incidentally test SpendableOutput event generation due to detection of to_local output on commitment tx
4863 let chanmon_cfgs = create_chanmon_cfgs(2);
4864 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4865 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4866 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4868 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 99000000, InitFeatures::known(), InitFeatures::known());
4869 nodes[1].node.force_close_channel(&chan.2).unwrap();
4870 check_closed_broadcast!(nodes[1], true);
4871 check_added_monitors!(nodes[1], 1);
4872 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
4873 assert_eq!(node_txn.len(), 1);
4874 check_spends!(node_txn[0], chan.3);
4875 assert_eq!(node_txn[0].output.len(), 2); // We can't force trimming of to_remote output as channel_reserve_satoshis block us to do so at channel opening
4877 mine_transaction(&nodes[1], &node_txn[0]);
4878 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
4880 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4881 assert_eq!(spend_txn.len(), 1);
4882 check_spends!(spend_txn[0], node_txn[0]);
4886 fn test_claim_on_remote_sizeable_push_msat() {
4887 // Same test as previous, just test on remote commitment tx, as per_commitment_point registration changes following you're funder/fundee and
4888 // to_remote output is encumbered by a P2WPKH
4889 let chanmon_cfgs = create_chanmon_cfgs(2);
4890 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4891 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4892 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4894 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 99000000, InitFeatures::known(), InitFeatures::known());
4895 nodes[0].node.force_close_channel(&chan.2).unwrap();
4896 check_closed_broadcast!(nodes[0], true);
4897 check_added_monitors!(nodes[0], 1);
4899 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
4900 assert_eq!(node_txn.len(), 1);
4901 check_spends!(node_txn[0], chan.3);
4902 assert_eq!(node_txn[0].output.len(), 2); // We can't force trimming of to_remote output as channel_reserve_satoshis block us to do so at channel opening
4904 mine_transaction(&nodes[1], &node_txn[0]);
4905 check_closed_broadcast!(nodes[1], true);
4906 check_added_monitors!(nodes[1], 1);
4907 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
4909 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4910 assert_eq!(spend_txn.len(), 1);
4911 check_spends!(spend_txn[0], node_txn[0]);
4915 fn test_claim_on_remote_revoked_sizeable_push_msat() {
4916 // Same test as previous, just test on remote revoked commitment tx, as per_commitment_point registration changes following you're funder/fundee and
4917 // to_remote output is encumbered by a P2WPKH
4919 let chanmon_cfgs = create_chanmon_cfgs(2);
4920 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4921 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4922 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4924 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 59000000, InitFeatures::known(), InitFeatures::known());
4925 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
4926 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan.2);
4927 assert_eq!(revoked_local_txn[0].input.len(), 1);
4928 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan.3.txid());
4930 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage);
4931 mine_transaction(&nodes[1], &revoked_local_txn[0]);
4932 check_closed_broadcast!(nodes[1], true);
4933 check_added_monitors!(nodes[1], 1);
4935 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
4936 mine_transaction(&nodes[1], &node_txn[0]);
4937 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
4939 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4940 assert_eq!(spend_txn.len(), 3);
4941 check_spends!(spend_txn[0], revoked_local_txn[0]); // to_remote output on revoked remote commitment_tx
4942 check_spends!(spend_txn[1], node_txn[0]);
4943 check_spends!(spend_txn[2], revoked_local_txn[0], node_txn[0]); // Both outputs
4947 fn test_static_spendable_outputs_preimage_tx() {
4948 let chanmon_cfgs = create_chanmon_cfgs(2);
4949 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4950 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4951 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4953 // Create some initial channels
4954 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4956 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
4958 let commitment_tx = get_local_commitment_txn!(nodes[0], chan_1.2);
4959 assert_eq!(commitment_tx[0].input.len(), 1);
4960 assert_eq!(commitment_tx[0].input[0].previous_output.txid, chan_1.3.txid());
4962 // Settle A's commitment tx on B's chain
4963 assert!(nodes[1].node.claim_funds(payment_preimage));
4964 check_added_monitors!(nodes[1], 1);
4965 mine_transaction(&nodes[1], &commitment_tx[0]);
4966 check_added_monitors!(nodes[1], 1);
4967 let events = nodes[1].node.get_and_clear_pending_msg_events();
4969 MessageSendEvent::UpdateHTLCs { .. } => {},
4970 _ => panic!("Unexpected event"),
4973 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
4974 _ => panic!("Unexepected event"),
4977 // Check B's monitor was able to send back output descriptor event for preimage tx on A's commitment tx
4978 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); // ChannelManager : 2 (local commitment tx + HTLC-Success), ChannelMonitor: preimage tx
4979 assert_eq!(node_txn.len(), 3);
4980 check_spends!(node_txn[0], commitment_tx[0]);
4981 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
4982 check_spends!(node_txn[1], chan_1.3);
4983 check_spends!(node_txn[2], node_txn[1]);
4985 mine_transaction(&nodes[1], &node_txn[0]);
4986 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
4988 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4989 assert_eq!(spend_txn.len(), 1);
4990 check_spends!(spend_txn[0], node_txn[0]);
4994 fn test_static_spendable_outputs_timeout_tx() {
4995 let chanmon_cfgs = create_chanmon_cfgs(2);
4996 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4997 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4998 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5000 // Create some initial channels
5001 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5003 // Rebalance the network a bit by relaying one payment through all the channels ...
5004 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
5006 let (_, our_payment_hash, _) = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3_000_000);
5008 let commitment_tx = get_local_commitment_txn!(nodes[0], chan_1.2);
5009 assert_eq!(commitment_tx[0].input.len(), 1);
5010 assert_eq!(commitment_tx[0].input[0].previous_output.txid, chan_1.3.txid());
5012 // Settle A's commitment tx on B' chain
5013 mine_transaction(&nodes[1], &commitment_tx[0]);
5014 check_added_monitors!(nodes[1], 1);
5015 let events = nodes[1].node.get_and_clear_pending_msg_events();
5017 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
5018 _ => panic!("Unexpected event"),
5020 connect_blocks(&nodes[1], TEST_FINAL_CLTV - 1); // Confirm blocks until the HTLC expires
5022 // Check B's monitor was able to send back output descriptor event for timeout tx on A's commitment tx
5023 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
5024 assert_eq!(node_txn.len(), 2); // ChannelManager : 1 local commitent tx, ChannelMonitor: timeout tx
5025 check_spends!(node_txn[0], chan_1.3.clone());
5026 check_spends!(node_txn[1], commitment_tx[0].clone());
5027 assert_eq!(node_txn[1].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5029 mine_transaction(&nodes[1], &node_txn[1]);
5030 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
5031 expect_payment_failed!(nodes[1], our_payment_hash, true);
5033 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
5034 assert_eq!(spend_txn.len(), 3); // SpendableOutput: remote_commitment_tx.to_remote, timeout_tx.output
5035 check_spends!(spend_txn[0], commitment_tx[0]);
5036 check_spends!(spend_txn[1], node_txn[1]);
5037 check_spends!(spend_txn[2], node_txn[1], commitment_tx[0]); // All outputs
5041 fn test_static_spendable_outputs_justice_tx_revoked_commitment_tx() {
5042 let chanmon_cfgs = create_chanmon_cfgs(2);
5043 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5044 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5045 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5047 // Create some initial channels
5048 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5050 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
5051 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
5052 assert_eq!(revoked_local_txn[0].input.len(), 1);
5053 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
5055 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage);
5057 mine_transaction(&nodes[1], &revoked_local_txn[0]);
5058 check_closed_broadcast!(nodes[1], true);
5059 check_added_monitors!(nodes[1], 1);
5061 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5062 assert_eq!(node_txn.len(), 2);
5063 assert_eq!(node_txn[0].input.len(), 2);
5064 check_spends!(node_txn[0], revoked_local_txn[0]);
5066 mine_transaction(&nodes[1], &node_txn[0]);
5067 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
5069 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
5070 assert_eq!(spend_txn.len(), 1);
5071 check_spends!(spend_txn[0], node_txn[0]);
5075 fn test_static_spendable_outputs_justice_tx_revoked_htlc_timeout_tx() {
5076 let mut chanmon_cfgs = create_chanmon_cfgs(2);
5077 chanmon_cfgs[0].keys_manager.disable_revocation_policy_check = true;
5078 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5079 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5080 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5082 // Create some initial channels
5083 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5085 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
5086 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
5087 assert_eq!(revoked_local_txn[0].input.len(), 1);
5088 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
5090 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage);
5092 // A will generate HTLC-Timeout from revoked commitment tx
5093 mine_transaction(&nodes[0], &revoked_local_txn[0]);
5094 check_closed_broadcast!(nodes[0], true);
5095 check_added_monitors!(nodes[0], 1);
5096 connect_blocks(&nodes[0], TEST_FINAL_CLTV - 1); // Confirm blocks until the HTLC expires
5098 let revoked_htlc_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
5099 assert_eq!(revoked_htlc_txn.len(), 2);
5100 check_spends!(revoked_htlc_txn[0], chan_1.3);
5101 assert_eq!(revoked_htlc_txn[1].input.len(), 1);
5102 assert_eq!(revoked_htlc_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
5103 check_spends!(revoked_htlc_txn[1], revoked_local_txn[0]);
5104 assert_ne!(revoked_htlc_txn[1].lock_time, 0); // HTLC-Timeout
5106 // B will generate justice tx from A's revoked commitment/HTLC tx
5107 let header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5108 connect_block(&nodes[1], &Block { header, txdata: vec![revoked_local_txn[0].clone(), revoked_htlc_txn[1].clone()] });
5109 check_closed_broadcast!(nodes[1], true);
5110 check_added_monitors!(nodes[1], 1);
5112 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5113 assert_eq!(node_txn.len(), 3); // ChannelMonitor: bogus justice tx, justice tx on revoked outputs, ChannelManager: local commitment tx
5114 // The first transaction generated is bogus - it spends both outputs of revoked_local_txn[0]
5115 // including the one already spent by revoked_htlc_txn[1]. That's OK, we'll spend with valid
5116 // transactions next...
5117 assert_eq!(node_txn[0].input.len(), 3);
5118 check_spends!(node_txn[0], revoked_local_txn[0], revoked_htlc_txn[1]);
5120 assert_eq!(node_txn[1].input.len(), 2);
5121 check_spends!(node_txn[1], revoked_local_txn[0], revoked_htlc_txn[1]);
5122 if node_txn[1].input[1].previous_output.txid == revoked_htlc_txn[1].txid() {
5123 assert_ne!(node_txn[1].input[0].previous_output, revoked_htlc_txn[1].input[0].previous_output);
5125 assert_eq!(node_txn[1].input[0].previous_output.txid, revoked_htlc_txn[1].txid());
5126 assert_ne!(node_txn[1].input[1].previous_output, revoked_htlc_txn[1].input[0].previous_output);
5129 assert_eq!(node_txn[2].input.len(), 1);
5130 check_spends!(node_txn[2], chan_1.3);
5132 mine_transaction(&nodes[1], &node_txn[1]);
5133 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
5135 // Check B's ChannelMonitor was able to generate the right spendable output descriptor
5136 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
5137 assert_eq!(spend_txn.len(), 1);
5138 assert_eq!(spend_txn[0].input.len(), 1);
5139 check_spends!(spend_txn[0], node_txn[1]);
5143 fn test_static_spendable_outputs_justice_tx_revoked_htlc_success_tx() {
5144 let mut chanmon_cfgs = create_chanmon_cfgs(2);
5145 chanmon_cfgs[1].keys_manager.disable_revocation_policy_check = true;
5146 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5147 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5148 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5150 // Create some initial channels
5151 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5153 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
5154 let revoked_local_txn = get_local_commitment_txn!(nodes[1], chan_1.2);
5155 assert_eq!(revoked_local_txn[0].input.len(), 1);
5156 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
5158 // The to-be-revoked commitment tx should have one HTLC and one to_remote output
5159 assert_eq!(revoked_local_txn[0].output.len(), 2);
5161 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage);
5163 // B will generate HTLC-Success from revoked commitment tx
5164 mine_transaction(&nodes[1], &revoked_local_txn[0]);
5165 check_closed_broadcast!(nodes[1], true);
5166 check_added_monitors!(nodes[1], 1);
5167 let revoked_htlc_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5169 assert_eq!(revoked_htlc_txn.len(), 2);
5170 assert_eq!(revoked_htlc_txn[0].input.len(), 1);
5171 assert_eq!(revoked_htlc_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5172 check_spends!(revoked_htlc_txn[0], revoked_local_txn[0]);
5174 // Check that the unspent (of two) outputs on revoked_local_txn[0] is a P2WPKH:
5175 let unspent_local_txn_output = revoked_htlc_txn[0].input[0].previous_output.vout as usize ^ 1;
5176 assert_eq!(revoked_local_txn[0].output[unspent_local_txn_output].script_pubkey.len(), 2 + 20); // P2WPKH
5178 // A will generate justice tx from B's revoked commitment/HTLC tx
5179 let header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[0].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5180 connect_block(&nodes[0], &Block { header, txdata: vec![revoked_local_txn[0].clone(), revoked_htlc_txn[0].clone()] });
5181 check_closed_broadcast!(nodes[0], true);
5182 check_added_monitors!(nodes[0], 1);
5184 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
5185 assert_eq!(node_txn.len(), 3); // ChannelMonitor: justice tx on revoked commitment, justice tx on revoked HTLC-success, ChannelManager: local commitment tx
5187 // The first transaction generated is bogus - it spends both outputs of revoked_local_txn[0]
5188 // including the one already spent by revoked_htlc_txn[0]. That's OK, we'll spend with valid
5189 // transactions next...
5190 assert_eq!(node_txn[0].input.len(), 2);
5191 check_spends!(node_txn[0], revoked_local_txn[0], revoked_htlc_txn[0]);
5192 if node_txn[0].input[1].previous_output.txid == revoked_htlc_txn[0].txid() {
5193 assert_eq!(node_txn[0].input[0].previous_output, revoked_htlc_txn[0].input[0].previous_output);
5195 assert_eq!(node_txn[0].input[0].previous_output.txid, revoked_htlc_txn[0].txid());
5196 assert_eq!(node_txn[0].input[1].previous_output, revoked_htlc_txn[0].input[0].previous_output);
5199 assert_eq!(node_txn[1].input.len(), 1);
5200 check_spends!(node_txn[1], revoked_htlc_txn[0]);
5202 check_spends!(node_txn[2], chan_1.3);
5204 mine_transaction(&nodes[0], &node_txn[1]);
5205 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
5207 // Note that nodes[0]'s tx_broadcaster is still locked, so if we get here the channelmonitor
5208 // didn't try to generate any new transactions.
5210 // Check A's ChannelMonitor was able to generate the right spendable output descriptor
5211 let spend_txn = check_spendable_outputs!(nodes[0], 1, node_cfgs[0].keys_manager, 100000);
5212 assert_eq!(spend_txn.len(), 3);
5213 assert_eq!(spend_txn[0].input.len(), 1);
5214 check_spends!(spend_txn[0], revoked_local_txn[0]); // spending to_remote output from revoked local tx
5215 assert_ne!(spend_txn[0].input[0].previous_output, revoked_htlc_txn[0].input[0].previous_output);
5216 check_spends!(spend_txn[1], node_txn[1]); // spending justice tx output on the htlc success tx
5217 check_spends!(spend_txn[2], revoked_local_txn[0], node_txn[1]); // Both outputs
5221 fn test_onchain_to_onchain_claim() {
5222 // Test that in case of channel closure, we detect the state of output and claim HTLC
5223 // on downstream peer's remote commitment tx.
5224 // First, have C claim an HTLC against its own latest commitment transaction.
5225 // Then, broadcast these to B, which should update the monitor downstream on the A<->B
5227 // Finally, check that B will claim the HTLC output if A's latest commitment transaction
5230 let chanmon_cfgs = create_chanmon_cfgs(3);
5231 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
5232 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
5233 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
5235 // Create some initial channels
5236 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5237 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
5239 // Ensure all nodes are at the same height
5240 let node_max_height = nodes.iter().map(|node| node.blocks.lock().unwrap().len()).max().unwrap() as u32;
5241 connect_blocks(&nodes[0], node_max_height - nodes[0].best_block_info().1);
5242 connect_blocks(&nodes[1], node_max_height - nodes[1].best_block_info().1);
5243 connect_blocks(&nodes[2], node_max_height - nodes[2].best_block_info().1);
5245 // Rebalance the network a bit by relaying one payment through all the channels ...
5246 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000);
5247 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000);
5249 let (payment_preimage, _payment_hash, _payment_secret) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
5250 let commitment_tx = get_local_commitment_txn!(nodes[2], chan_2.2);
5251 check_spends!(commitment_tx[0], chan_2.3);
5252 nodes[2].node.claim_funds(payment_preimage);
5253 check_added_monitors!(nodes[2], 1);
5254 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
5255 assert!(updates.update_add_htlcs.is_empty());
5256 assert!(updates.update_fail_htlcs.is_empty());
5257 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
5258 assert!(updates.update_fail_malformed_htlcs.is_empty());
5260 mine_transaction(&nodes[2], &commitment_tx[0]);
5261 check_closed_broadcast!(nodes[2], true);
5262 check_added_monitors!(nodes[2], 1);
5264 let c_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 2 (commitment tx, HTLC-Success tx), ChannelMonitor : 1 (HTLC-Success tx)
5265 assert_eq!(c_txn.len(), 3);
5266 assert_eq!(c_txn[0], c_txn[2]);
5267 assert_eq!(commitment_tx[0], c_txn[1]);
5268 check_spends!(c_txn[1], chan_2.3);
5269 check_spends!(c_txn[2], c_txn[1]);
5270 assert_eq!(c_txn[1].input[0].witness.clone().last().unwrap().len(), 71);
5271 assert_eq!(c_txn[2].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5272 assert!(c_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
5273 assert_eq!(c_txn[0].lock_time, 0); // Success tx
5275 // So we broadcast C's commitment tx and HTLC-Success on B's chain, we should successfully be able to extract preimage and update downstream monitor
5276 let header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
5277 connect_block(&nodes[1], &Block { header, txdata: vec![c_txn[1].clone(), c_txn[2].clone()]});
5278 connect_blocks(&nodes[1], TEST_FINAL_CLTV - 1); // Confirm blocks until the HTLC expires
5280 let mut b_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5281 // ChannelMonitor: claim tx, ChannelManager: local commitment tx
5282 assert_eq!(b_txn.len(), 2);
5283 check_spends!(b_txn[0], chan_2.3); // B local commitment tx, issued by ChannelManager
5284 check_spends!(b_txn[1], c_txn[1]); // timeout tx on C remote commitment tx, issued by ChannelMonitor
5285 assert_eq!(b_txn[1].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5286 assert!(b_txn[1].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
5287 assert_ne!(b_txn[1].lock_time, 0); // Timeout tx
5290 check_added_monitors!(nodes[1], 1);
5291 let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
5292 assert_eq!(msg_events.len(), 3);
5293 check_added_monitors!(nodes[1], 1);
5294 match msg_events[0] {
5295 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
5296 _ => panic!("Unexpected event"),
5298 match msg_events[1] {
5299 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { .. }, node_id: _ } => {},
5300 _ => panic!("Unexpected event"),
5302 match msg_events[2] {
5303 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, .. } } => {
5304 assert!(update_add_htlcs.is_empty());
5305 assert!(update_fail_htlcs.is_empty());
5306 assert_eq!(update_fulfill_htlcs.len(), 1);
5307 assert!(update_fail_malformed_htlcs.is_empty());
5308 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
5310 _ => panic!("Unexpected event"),
5312 // Broadcast A's commitment tx on B's chain to see if we are able to claim inbound HTLC with our HTLC-Success tx
5313 let commitment_tx = get_local_commitment_txn!(nodes[0], chan_1.2);
5314 mine_transaction(&nodes[1], &commitment_tx[0]);
5315 let b_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5316 // ChannelMonitor: HTLC-Success tx + HTLC-Timeout RBF Bump, ChannelManager: local commitment tx + HTLC-Success tx
5317 assert_eq!(b_txn.len(), 4);
5318 check_spends!(b_txn[2], chan_1.3);
5319 check_spends!(b_txn[3], b_txn[2]);
5320 let (htlc_success_claim, htlc_timeout_bumped) =
5321 if b_txn[0].input[0].previous_output.txid == commitment_tx[0].txid()
5322 { (&b_txn[0], &b_txn[1]) } else { (&b_txn[1], &b_txn[0]) };
5323 check_spends!(htlc_success_claim, commitment_tx[0]);
5324 assert_eq!(htlc_success_claim.input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
5325 assert!(htlc_success_claim.output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
5326 assert_eq!(htlc_success_claim.lock_time, 0); // Success tx
5327 check_spends!(htlc_timeout_bumped, c_txn[1]); // timeout tx on C remote commitment tx, issued by ChannelMonitor
5328 assert_ne!(htlc_timeout_bumped.lock_time, 0); // Success tx
5330 check_closed_broadcast!(nodes[1], true);
5331 check_added_monitors!(nodes[1], 1);
5335 fn test_duplicate_payment_hash_one_failure_one_success() {
5336 // Topology : A --> B --> C --> D
5337 // We route 2 payments with same hash between B and C, one will be timeout, the other successfully claim
5338 // Note that because C will refuse to generate two payment secrets for the same payment hash,
5339 // we forward one of the payments onwards to D.
5340 let chanmon_cfgs = create_chanmon_cfgs(4);
5341 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
5342 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
5343 let mut nodes = create_network(4, &node_cfgs, &node_chanmgrs);
5345 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5346 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
5347 create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known());
5349 let node_max_height = nodes.iter().map(|node| node.blocks.lock().unwrap().len()).max().unwrap() as u32;
5350 connect_blocks(&nodes[0], node_max_height - nodes[0].best_block_info().1);
5351 connect_blocks(&nodes[1], node_max_height - nodes[1].best_block_info().1);
5352 connect_blocks(&nodes[2], node_max_height - nodes[2].best_block_info().1);
5353 connect_blocks(&nodes[3], node_max_height - nodes[3].best_block_info().1);
5355 let (our_payment_preimage, duplicate_payment_hash, _) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 900000);
5357 let payment_secret = nodes[3].node.create_inbound_payment_for_hash(duplicate_payment_hash, None, 7200, 0).unwrap();
5358 // We reduce the final CLTV here by a somewhat arbitrary constant to keep it under the one-byte
5359 // script push size limit so that the below script length checks match
5360 // ACCEPTED_HTLC_SCRIPT_WEIGHT.
5361 let route = get_route(&nodes[0].node.get_our_node_id(), &nodes[0].net_graph_msg_handler.network_graph.read().unwrap(),
5362 &nodes[3].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 900000, TEST_FINAL_CLTV - 40, nodes[0].logger).unwrap();
5363 send_along_route_with_secret(&nodes[0], route, &[&[&nodes[1], &nodes[2], &nodes[3]]], 900000, duplicate_payment_hash, payment_secret);
5365 let commitment_txn = get_local_commitment_txn!(nodes[2], chan_2.2);
5366 assert_eq!(commitment_txn[0].input.len(), 1);
5367 check_spends!(commitment_txn[0], chan_2.3);
5369 mine_transaction(&nodes[1], &commitment_txn[0]);
5370 check_closed_broadcast!(nodes[1], true);
5371 check_added_monitors!(nodes[1], 1);
5372 connect_blocks(&nodes[1], TEST_FINAL_CLTV - 40 + MIN_CLTV_EXPIRY_DELTA as u32 - 1); // Confirm blocks until the HTLC expires
5374 let htlc_timeout_tx;
5375 { // Extract one of the two HTLC-Timeout transaction
5376 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5377 // ChannelMonitor: timeout tx * 3, ChannelManager: local commitment tx
5378 assert_eq!(node_txn.len(), 4);
5379 check_spends!(node_txn[0], chan_2.3);
5381 check_spends!(node_txn[1], commitment_txn[0]);
5382 assert_eq!(node_txn[1].input.len(), 1);
5383 check_spends!(node_txn[2], commitment_txn[0]);
5384 assert_eq!(node_txn[2].input.len(), 1);
5385 assert_eq!(node_txn[1].input[0].previous_output, node_txn[2].input[0].previous_output);
5386 check_spends!(node_txn[3], commitment_txn[0]);
5387 assert_ne!(node_txn[1].input[0].previous_output, node_txn[3].input[0].previous_output);
5389 assert_eq!(node_txn[1].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5390 assert_eq!(node_txn[2].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5391 assert_eq!(node_txn[3].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5392 htlc_timeout_tx = node_txn[1].clone();
5395 nodes[2].node.claim_funds(our_payment_preimage);
5396 mine_transaction(&nodes[2], &commitment_txn[0]);
5397 check_added_monitors!(nodes[2], 2);
5398 let events = nodes[2].node.get_and_clear_pending_msg_events();
5400 MessageSendEvent::UpdateHTLCs { .. } => {},
5401 _ => panic!("Unexpected event"),
5404 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
5405 _ => panic!("Unexepected event"),
5407 let htlc_success_txn: Vec<_> = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
5408 assert_eq!(htlc_success_txn.len(), 5); // ChannelMonitor: HTLC-Success txn (*2 due to 2-HTLC outputs), ChannelManager: local commitment tx + HTLC-Success txn (*2 due to 2-HTLC outputs)
5409 check_spends!(htlc_success_txn[0], commitment_txn[0]);
5410 check_spends!(htlc_success_txn[1], commitment_txn[0]);
5411 assert_eq!(htlc_success_txn[0].input.len(), 1);
5412 assert_eq!(htlc_success_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5413 assert_eq!(htlc_success_txn[1].input.len(), 1);
5414 assert_eq!(htlc_success_txn[1].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5415 assert_ne!(htlc_success_txn[0].input[0].previous_output, htlc_success_txn[1].input[0].previous_output);
5416 assert_eq!(htlc_success_txn[2], commitment_txn[0]);
5417 assert_eq!(htlc_success_txn[3], htlc_success_txn[0]);
5418 assert_eq!(htlc_success_txn[4], htlc_success_txn[1]);
5419 assert_ne!(htlc_success_txn[0].input[0].previous_output, htlc_timeout_tx.input[0].previous_output);
5421 mine_transaction(&nodes[1], &htlc_timeout_tx);
5422 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
5423 expect_pending_htlcs_forwardable!(nodes[1]);
5424 let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
5425 assert!(htlc_updates.update_add_htlcs.is_empty());
5426 assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
5427 let first_htlc_id = htlc_updates.update_fail_htlcs[0].htlc_id;
5428 assert!(htlc_updates.update_fulfill_htlcs.is_empty());
5429 assert!(htlc_updates.update_fail_malformed_htlcs.is_empty());
5430 check_added_monitors!(nodes[1], 1);
5432 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]);
5433 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
5435 commitment_signed_dance!(nodes[0], nodes[1], &htlc_updates.commitment_signed, false, true);
5436 let events = nodes[0].node.get_and_clear_pending_msg_events();
5437 assert_eq!(events.len(), 1);
5439 MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelClosed { .. } } => {
5441 _ => { panic!("Unexpected event"); }
5444 expect_payment_failed!(nodes[0], duplicate_payment_hash, false);
5446 // Solve 2nd HTLC by broadcasting on B's chain HTLC-Success Tx from C
5447 mine_transaction(&nodes[1], &htlc_success_txn[0]);
5448 let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
5449 assert!(updates.update_add_htlcs.is_empty());
5450 assert!(updates.update_fail_htlcs.is_empty());
5451 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
5452 assert_ne!(updates.update_fulfill_htlcs[0].htlc_id, first_htlc_id);
5453 assert!(updates.update_fail_malformed_htlcs.is_empty());
5454 check_added_monitors!(nodes[1], 1);
5456 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
5457 commitment_signed_dance!(nodes[0], nodes[1], &updates.commitment_signed, false);
5459 let events = nodes[0].node.get_and_clear_pending_events();
5461 Event::PaymentSent { ref payment_preimage } => {
5462 assert_eq!(*payment_preimage, our_payment_preimage);
5464 _ => panic!("Unexpected event"),
5469 fn test_dynamic_spendable_outputs_local_htlc_success_tx() {
5470 let chanmon_cfgs = create_chanmon_cfgs(2);
5471 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5472 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5473 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5475 // Create some initial channels
5476 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5478 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000).0;
5479 let local_txn = get_local_commitment_txn!(nodes[1], chan_1.2);
5480 assert_eq!(local_txn.len(), 1);
5481 assert_eq!(local_txn[0].input.len(), 1);
5482 check_spends!(local_txn[0], chan_1.3);
5484 // Give B knowledge of preimage to be able to generate a local HTLC-Success Tx
5485 nodes[1].node.claim_funds(payment_preimage);
5486 check_added_monitors!(nodes[1], 1);
5487 mine_transaction(&nodes[1], &local_txn[0]);
5488 check_added_monitors!(nodes[1], 1);
5489 let events = nodes[1].node.get_and_clear_pending_msg_events();
5491 MessageSendEvent::UpdateHTLCs { .. } => {},
5492 _ => panic!("Unexpected event"),
5495 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
5496 _ => panic!("Unexepected event"),
5499 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5500 assert_eq!(node_txn.len(), 3);
5501 assert_eq!(node_txn[0], node_txn[2]);
5502 assert_eq!(node_txn[1], local_txn[0]);
5503 assert_eq!(node_txn[0].input.len(), 1);
5504 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5505 check_spends!(node_txn[0], local_txn[0]);
5509 mine_transaction(&nodes[1], &node_tx);
5510 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
5512 // Verify that B is able to spend its own HTLC-Success tx thanks to spendable output event given back by its ChannelMonitor
5513 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
5514 assert_eq!(spend_txn.len(), 1);
5515 check_spends!(spend_txn[0], node_tx);
5518 fn do_test_fail_backwards_unrevoked_remote_announce(deliver_last_raa: bool, announce_latest: bool) {
5519 // Test that we fail backwards the full set of HTLCs we need to when remote broadcasts an
5520 // unrevoked commitment transaction.
5521 // This includes HTLCs which were below the dust threshold as well as HTLCs which were awaiting
5522 // a remote RAA before they could be failed backwards (and combinations thereof).
5523 // We also test duplicate-hash HTLCs by adding two nodes on each side of the target nodes which
5524 // use the same payment hashes.
5525 // Thus, we use a six-node network:
5530 // And test where C fails back to A/B when D announces its latest commitment transaction
5531 let chanmon_cfgs = create_chanmon_cfgs(6);
5532 let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
5533 let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
5534 let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
5535 let logger = test_utils::TestLogger::new();
5537 create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known());
5538 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
5539 let chan = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known());
5540 create_announced_chan_between_nodes(&nodes, 3, 4, InitFeatures::known(), InitFeatures::known());
5541 create_announced_chan_between_nodes(&nodes, 3, 5, InitFeatures::known(), InitFeatures::known());
5543 // Rebalance and check output sanity...
5544 send_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 500000);
5545 send_payment(&nodes[1], &[&nodes[2], &nodes[3], &nodes[5]], 500000);
5546 assert_eq!(get_local_commitment_txn!(nodes[3], chan.2)[0].output.len(), 2);
5548 let ds_dust_limit = nodes[3].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().holder_dust_limit_satoshis;
5550 let (_, payment_hash_1, _) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], ds_dust_limit*1000); // not added < dust limit + HTLC tx fee
5552 let (_, payment_hash_2, _) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], ds_dust_limit*1000); // not added < dust limit + HTLC tx fee
5553 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
5554 let our_node_id = &nodes[1].node.get_our_node_id();
5555 let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), ds_dust_limit*1000, TEST_FINAL_CLTV, &logger).unwrap();
5557 send_along_route_with_secret(&nodes[1], route.clone(), &[&[&nodes[2], &nodes[3], &nodes[5]]], ds_dust_limit*1000, payment_hash_1, nodes[5].node.create_inbound_payment_for_hash(payment_hash_1, None, 7200, 0).unwrap()); // not added < dust limit + HTLC tx fee
5559 send_along_route_with_secret(&nodes[1], route, &[&[&nodes[2], &nodes[3], &nodes[5]]], ds_dust_limit*1000, payment_hash_2, nodes[5].node.create_inbound_payment_for_hash(payment_hash_2, None, 7200, 0).unwrap()); // not added < dust limit + HTLC tx fee
5561 let (_, payment_hash_3, _) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 1000000);
5563 let (_, payment_hash_4, _) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 1000000);
5564 let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
5566 send_along_route_with_secret(&nodes[1], route.clone(), &[&[&nodes[2], &nodes[3], &nodes[5]]], 1000000, payment_hash_3, nodes[5].node.create_inbound_payment_for_hash(payment_hash_3, None, 7200, 0).unwrap());
5568 send_along_route_with_secret(&nodes[1], route, &[&[&nodes[2], &nodes[3], &nodes[5]]], 1000000, payment_hash_4, nodes[5].node.create_inbound_payment_for_hash(payment_hash_4, None, 7200, 0).unwrap());
5571 let (_, payment_hash_5, _) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 1000000);
5573 let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), ds_dust_limit*1000, TEST_FINAL_CLTV, &logger).unwrap();
5574 send_along_route_with_secret(&nodes[1], route, &[&[&nodes[2], &nodes[3], &nodes[5]]], ds_dust_limit*1000, payment_hash_5, nodes[5].node.create_inbound_payment_for_hash(payment_hash_5, None, 7200, 0).unwrap()); // not added < dust limit + HTLC tx fee
5577 let (_, payment_hash_6, _) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], ds_dust_limit*1000); // not added < dust limit + HTLC tx fee
5579 let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
5580 send_along_route_with_secret(&nodes[1], route, &[&[&nodes[2], &nodes[3], &nodes[5]]], 1000000, payment_hash_6, nodes[5].node.create_inbound_payment_for_hash(payment_hash_6, None, 7200, 0).unwrap());
5582 // Double-check that six of the new HTLC were added
5583 // We now have six HTLCs pending over the dust limit and six HTLCs under the dust limit (ie,
5584 // with to_local and to_remote outputs, 8 outputs and 6 HTLCs not included).
5585 assert_eq!(get_local_commitment_txn!(nodes[3], chan.2).len(), 1);
5586 assert_eq!(get_local_commitment_txn!(nodes[3], chan.2)[0].output.len(), 8);
5588 // Now fail back three of the over-dust-limit and three of the under-dust-limit payments in one go.
5589 // Fail 0th below-dust, 4th above-dust, 8th above-dust, 10th below-dust HTLCs
5590 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_1));
5591 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_3));
5592 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_5));
5593 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_6));
5594 check_added_monitors!(nodes[4], 0);
5595 expect_pending_htlcs_forwardable!(nodes[4]);
5596 check_added_monitors!(nodes[4], 1);
5598 let four_removes = get_htlc_update_msgs!(nodes[4], nodes[3].node.get_our_node_id());
5599 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[0]);
5600 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[1]);
5601 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[2]);
5602 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[3]);
5603 commitment_signed_dance!(nodes[3], nodes[4], four_removes.commitment_signed, false);
5605 // Fail 3rd below-dust and 7th above-dust HTLCs
5606 assert!(nodes[5].node.fail_htlc_backwards(&payment_hash_2));
5607 assert!(nodes[5].node.fail_htlc_backwards(&payment_hash_4));
5608 check_added_monitors!(nodes[5], 0);
5609 expect_pending_htlcs_forwardable!(nodes[5]);
5610 check_added_monitors!(nodes[5], 1);
5612 let two_removes = get_htlc_update_msgs!(nodes[5], nodes[3].node.get_our_node_id());
5613 nodes[3].node.handle_update_fail_htlc(&nodes[5].node.get_our_node_id(), &two_removes.update_fail_htlcs[0]);
5614 nodes[3].node.handle_update_fail_htlc(&nodes[5].node.get_our_node_id(), &two_removes.update_fail_htlcs[1]);
5615 commitment_signed_dance!(nodes[3], nodes[5], two_removes.commitment_signed, false);
5617 let ds_prev_commitment_tx = get_local_commitment_txn!(nodes[3], chan.2);
5619 expect_pending_htlcs_forwardable!(nodes[3]);
5620 check_added_monitors!(nodes[3], 1);
5621 let six_removes = get_htlc_update_msgs!(nodes[3], nodes[2].node.get_our_node_id());
5622 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[0]);
5623 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[1]);
5624 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[2]);
5625 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[3]);
5626 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[4]);
5627 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[5]);
5628 if deliver_last_raa {
5629 commitment_signed_dance!(nodes[2], nodes[3], six_removes.commitment_signed, false);
5631 let _cs_last_raa = commitment_signed_dance!(nodes[2], nodes[3], six_removes.commitment_signed, false, true, false, true);
5634 // D's latest commitment transaction now contains 1st + 2nd + 9th HTLCs (implicitly, they're
5635 // below the dust limit) and the 5th + 6th + 11th HTLCs. It has failed back the 0th, 3rd, 4th,
5636 // 7th, 8th, and 10th, but as we haven't yet delivered the final RAA to C, the fails haven't
5637 // propagated back to A/B yet (and D has two unrevoked commitment transactions).
5639 // We now broadcast the latest commitment transaction, which *should* result in failures for
5640 // the 0th, 1st, 2nd, 3rd, 4th, 7th, 8th, 9th, and 10th HTLCs, ie all the below-dust HTLCs and
5641 // the non-broadcast above-dust HTLCs.
5643 // Alternatively, we may broadcast the previous commitment transaction, which should only
5644 // result in failures for the below-dust HTLCs, ie the 0th, 1st, 2nd, 3rd, 9th, and 10th HTLCs.
5645 let ds_last_commitment_tx = get_local_commitment_txn!(nodes[3], chan.2);
5647 if announce_latest {
5648 mine_transaction(&nodes[2], &ds_last_commitment_tx[0]);
5650 mine_transaction(&nodes[2], &ds_prev_commitment_tx[0]);
5652 connect_blocks(&nodes[2], ANTI_REORG_DELAY - 1);
5653 check_closed_broadcast!(nodes[2], true);
5654 expect_pending_htlcs_forwardable!(nodes[2]);
5655 check_added_monitors!(nodes[2], 3);
5657 let cs_msgs = nodes[2].node.get_and_clear_pending_msg_events();
5658 assert_eq!(cs_msgs.len(), 2);
5659 let mut a_done = false;
5660 for msg in cs_msgs {
5662 MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => {
5663 // Both under-dust HTLCs and the one above-dust HTLC that we had already failed
5664 // should be failed-backwards here.
5665 let target = if *node_id == nodes[0].node.get_our_node_id() {
5666 // If announce_latest, expect 0th, 1st, 4th, 8th, 10th HTLCs, else only 0th, 1st, 10th below-dust HTLCs
5667 for htlc in &updates.update_fail_htlcs {
5668 assert!(htlc.htlc_id == 1 || htlc.htlc_id == 2 || htlc.htlc_id == 6 || if announce_latest { htlc.htlc_id == 3 || htlc.htlc_id == 5 } else { false });
5670 assert_eq!(updates.update_fail_htlcs.len(), if announce_latest { 5 } else { 3 });
5675 // If announce_latest, expect 2nd, 3rd, 7th, 9th HTLCs, else only 2nd, 3rd, 9th below-dust HTLCs
5676 for htlc in &updates.update_fail_htlcs {
5677 assert!(htlc.htlc_id == 1 || htlc.htlc_id == 2 || htlc.htlc_id == 5 || if announce_latest { htlc.htlc_id == 4 } else { false });
5679 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
5680 assert_eq!(updates.update_fail_htlcs.len(), if announce_latest { 4 } else { 3 });
5683 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
5684 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[1]);
5685 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[2]);
5686 if announce_latest {
5687 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[3]);
5688 if *node_id == nodes[0].node.get_our_node_id() {
5689 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[4]);
5692 commitment_signed_dance!(target, nodes[2], updates.commitment_signed, false, true);
5694 _ => panic!("Unexpected event"),
5698 let as_events = nodes[0].node.get_and_clear_pending_events();
5699 assert_eq!(as_events.len(), if announce_latest { 5 } else { 3 });
5700 let mut as_failds = HashSet::new();
5701 for event in as_events.iter() {
5702 if let &Event::PaymentFailed { ref payment_hash, ref rejected_by_dest, .. } = event {
5703 assert!(as_failds.insert(*payment_hash));
5704 if *payment_hash != payment_hash_2 {
5705 assert_eq!(*rejected_by_dest, deliver_last_raa);
5707 assert!(!rejected_by_dest);
5709 } else { panic!("Unexpected event"); }
5711 assert!(as_failds.contains(&payment_hash_1));
5712 assert!(as_failds.contains(&payment_hash_2));
5713 if announce_latest {
5714 assert!(as_failds.contains(&payment_hash_3));
5715 assert!(as_failds.contains(&payment_hash_5));
5717 assert!(as_failds.contains(&payment_hash_6));
5719 let bs_events = nodes[1].node.get_and_clear_pending_events();
5720 assert_eq!(bs_events.len(), if announce_latest { 4 } else { 3 });
5721 let mut bs_failds = HashSet::new();
5722 for event in bs_events.iter() {
5723 if let &Event::PaymentFailed { ref payment_hash, ref rejected_by_dest, .. } = event {
5724 assert!(bs_failds.insert(*payment_hash));
5725 if *payment_hash != payment_hash_1 && *payment_hash != payment_hash_5 {
5726 assert_eq!(*rejected_by_dest, deliver_last_raa);
5728 assert!(!rejected_by_dest);
5730 } else { panic!("Unexpected event"); }
5732 assert!(bs_failds.contains(&payment_hash_1));
5733 assert!(bs_failds.contains(&payment_hash_2));
5734 if announce_latest {
5735 assert!(bs_failds.contains(&payment_hash_4));
5737 assert!(bs_failds.contains(&payment_hash_5));
5739 // For each HTLC which was not failed-back by normal process (ie deliver_last_raa), we should
5740 // get a PaymentFailureNetworkUpdate. A should have gotten 4 HTLCs which were failed-back due
5741 // to unknown-preimage-etc, B should have gotten 2. Thus, in the
5742 // announce_latest && deliver_last_raa case, we should have 5-4=1 and 4-2=2
5743 // PaymentFailureNetworkUpdates.
5744 let as_msg_events = nodes[0].node.get_and_clear_pending_msg_events();
5745 assert_eq!(as_msg_events.len(), if deliver_last_raa { 1 } else if !announce_latest { 3 } else { 5 });
5746 let bs_msg_events = nodes[1].node.get_and_clear_pending_msg_events();
5747 assert_eq!(bs_msg_events.len(), if deliver_last_raa { 2 } else if !announce_latest { 3 } else { 4 });
5748 for event in as_msg_events.iter().chain(bs_msg_events.iter()) {
5750 &MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
5751 _ => panic!("Unexpected event"),
5757 fn test_fail_backwards_latest_remote_announce_a() {
5758 do_test_fail_backwards_unrevoked_remote_announce(false, true);
5762 fn test_fail_backwards_latest_remote_announce_b() {
5763 do_test_fail_backwards_unrevoked_remote_announce(true, true);
5767 fn test_fail_backwards_previous_remote_announce() {
5768 do_test_fail_backwards_unrevoked_remote_announce(false, false);
5769 // Note that true, true doesn't make sense as it implies we announce a revoked state, which is
5770 // tested for in test_commitment_revoked_fail_backward_exhaustive()
5774 fn test_dynamic_spendable_outputs_local_htlc_timeout_tx() {
5775 let chanmon_cfgs = create_chanmon_cfgs(2);
5776 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5777 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5778 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5780 // Create some initial channels
5781 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5783 let (_, our_payment_hash, _) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000);
5784 let local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
5785 assert_eq!(local_txn[0].input.len(), 1);
5786 check_spends!(local_txn[0], chan_1.3);
5788 // Timeout HTLC on A's chain and so it can generate a HTLC-Timeout tx
5789 mine_transaction(&nodes[0], &local_txn[0]);
5790 check_closed_broadcast!(nodes[0], true);
5791 check_added_monitors!(nodes[0], 1);
5792 connect_blocks(&nodes[0], TEST_FINAL_CLTV - 1); // Confirm blocks until the HTLC expires
5794 let htlc_timeout = {
5795 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
5796 assert_eq!(node_txn.len(), 2);
5797 check_spends!(node_txn[0], chan_1.3);
5798 assert_eq!(node_txn[1].input.len(), 1);
5799 assert_eq!(node_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
5800 check_spends!(node_txn[1], local_txn[0]);
5804 mine_transaction(&nodes[0], &htlc_timeout);
5805 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
5806 expect_payment_failed!(nodes[0], our_payment_hash, true);
5808 // Verify that A is able to spend its own HTLC-Timeout tx thanks to spendable output event given back by its ChannelMonitor
5809 let spend_txn = check_spendable_outputs!(nodes[0], 1, node_cfgs[0].keys_manager, 100000);
5810 assert_eq!(spend_txn.len(), 3);
5811 check_spends!(spend_txn[0], local_txn[0]);
5812 check_spends!(spend_txn[1], htlc_timeout);
5813 check_spends!(spend_txn[2], local_txn[0], htlc_timeout);
5817 fn test_key_derivation_params() {
5818 // This test is a copy of test_dynamic_spendable_outputs_local_htlc_timeout_tx, with
5819 // a key manager rotation to test that key_derivation_params returned in DynamicOutputP2WSH
5820 // let us re-derive the channel key set to then derive a delayed_payment_key.
5822 let chanmon_cfgs = create_chanmon_cfgs(3);
5824 // We manually create the node configuration to backup the seed.
5825 let seed = [42; 32];
5826 let keys_manager = test_utils::TestKeysInterface::new(&seed, Network::Testnet);
5827 let chain_monitor = test_utils::TestChainMonitor::new(Some(&chanmon_cfgs[0].chain_source), &chanmon_cfgs[0].tx_broadcaster, &chanmon_cfgs[0].logger, &chanmon_cfgs[0].fee_estimator, &chanmon_cfgs[0].persister, &keys_manager);
5828 let node = NodeCfg { chain_source: &chanmon_cfgs[0].chain_source, logger: &chanmon_cfgs[0].logger, tx_broadcaster: &chanmon_cfgs[0].tx_broadcaster, fee_estimator: &chanmon_cfgs[0].fee_estimator, chain_monitor, keys_manager: &keys_manager, node_seed: seed };
5829 let mut node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
5830 node_cfgs.remove(0);
5831 node_cfgs.insert(0, node);
5833 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
5834 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
5836 // Create some initial channels
5837 // Create a dummy channel to advance index by one and thus test re-derivation correctness
5839 let chan_0 = create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known());
5840 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5841 assert_ne!(chan_0.3.output[0].script_pubkey, chan_1.3.output[0].script_pubkey);
5843 // Ensure all nodes are at the same height
5844 let node_max_height = nodes.iter().map(|node| node.blocks.lock().unwrap().len()).max().unwrap() as u32;
5845 connect_blocks(&nodes[0], node_max_height - nodes[0].best_block_info().1);
5846 connect_blocks(&nodes[1], node_max_height - nodes[1].best_block_info().1);
5847 connect_blocks(&nodes[2], node_max_height - nodes[2].best_block_info().1);
5849 let (_, our_payment_hash, _) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000);
5850 let local_txn_0 = get_local_commitment_txn!(nodes[0], chan_0.2);
5851 let local_txn_1 = get_local_commitment_txn!(nodes[0], chan_1.2);
5852 assert_eq!(local_txn_1[0].input.len(), 1);
5853 check_spends!(local_txn_1[0], chan_1.3);
5855 // We check funding pubkey are unique
5856 let (from_0_funding_key_0, from_0_funding_key_1) = (PublicKey::from_slice(&local_txn_0[0].input[0].witness[3][2..35]), PublicKey::from_slice(&local_txn_0[0].input[0].witness[3][36..69]));
5857 let (from_1_funding_key_0, from_1_funding_key_1) = (PublicKey::from_slice(&local_txn_1[0].input[0].witness[3][2..35]), PublicKey::from_slice(&local_txn_1[0].input[0].witness[3][36..69]));
5858 if from_0_funding_key_0 == from_1_funding_key_0
5859 || from_0_funding_key_0 == from_1_funding_key_1
5860 || from_0_funding_key_1 == from_1_funding_key_0
5861 || from_0_funding_key_1 == from_1_funding_key_1 {
5862 panic!("Funding pubkeys aren't unique");
5865 // Timeout HTLC on A's chain and so it can generate a HTLC-Timeout tx
5866 mine_transaction(&nodes[0], &local_txn_1[0]);
5867 connect_blocks(&nodes[0], TEST_FINAL_CLTV - 1); // Confirm blocks until the HTLC expires
5868 check_closed_broadcast!(nodes[0], true);
5869 check_added_monitors!(nodes[0], 1);
5871 let htlc_timeout = {
5872 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
5873 assert_eq!(node_txn[1].input.len(), 1);
5874 assert_eq!(node_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
5875 check_spends!(node_txn[1], local_txn_1[0]);
5879 mine_transaction(&nodes[0], &htlc_timeout);
5880 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
5881 expect_payment_failed!(nodes[0], our_payment_hash, true);
5883 // Verify that A is able to spend its own HTLC-Timeout tx thanks to spendable output event given back by its ChannelMonitor
5884 let new_keys_manager = test_utils::TestKeysInterface::new(&seed, Network::Testnet);
5885 let spend_txn = check_spendable_outputs!(nodes[0], 1, new_keys_manager, 100000);
5886 assert_eq!(spend_txn.len(), 3);
5887 check_spends!(spend_txn[0], local_txn_1[0]);
5888 check_spends!(spend_txn[1], htlc_timeout);
5889 check_spends!(spend_txn[2], local_txn_1[0], htlc_timeout);
5893 fn test_static_output_closing_tx() {
5894 let chanmon_cfgs = create_chanmon_cfgs(2);
5895 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5896 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5897 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5899 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5901 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
5902 let closing_tx = close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true).2;
5904 mine_transaction(&nodes[0], &closing_tx);
5905 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
5907 let spend_txn = check_spendable_outputs!(nodes[0], 2, node_cfgs[0].keys_manager, 100000);
5908 assert_eq!(spend_txn.len(), 1);
5909 check_spends!(spend_txn[0], closing_tx);
5911 mine_transaction(&nodes[1], &closing_tx);
5912 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
5914 let spend_txn = check_spendable_outputs!(nodes[1], 2, node_cfgs[1].keys_manager, 100000);
5915 assert_eq!(spend_txn.len(), 1);
5916 check_spends!(spend_txn[0], closing_tx);
5919 fn do_htlc_claim_local_commitment_only(use_dust: bool) {
5920 let chanmon_cfgs = create_chanmon_cfgs(2);
5921 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5922 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5923 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5924 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5926 let (our_payment_preimage, _, _) = route_payment(&nodes[0], &[&nodes[1]], if use_dust { 50000 } else { 3000000 });
5928 // Claim the payment, but don't deliver A's commitment_signed, resulting in the HTLC only being
5929 // present in B's local commitment transaction, but none of A's commitment transactions.
5930 assert!(nodes[1].node.claim_funds(our_payment_preimage));
5931 check_added_monitors!(nodes[1], 1);
5933 let bs_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
5934 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.update_fulfill_htlcs[0]);
5935 let events = nodes[0].node.get_and_clear_pending_events();
5936 assert_eq!(events.len(), 1);
5938 Event::PaymentSent { payment_preimage } => {
5939 assert_eq!(payment_preimage, our_payment_preimage);
5941 _ => panic!("Unexpected event"),
5944 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_updates.commitment_signed);
5945 check_added_monitors!(nodes[0], 1);
5946 let as_updates = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
5947 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_updates.0);
5948 check_added_monitors!(nodes[1], 1);
5950 let starting_block = nodes[1].best_block_info();
5951 let mut block = Block {
5952 header: BlockHeader { version: 0x20000000, prev_blockhash: starting_block.0, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
5955 for _ in starting_block.1 + 1..TEST_FINAL_CLTV - CLTV_CLAIM_BUFFER + starting_block.1 + 2 {
5956 connect_block(&nodes[1], &block);
5957 block.header.prev_blockhash = block.block_hash();
5959 test_txn_broadcast(&nodes[1], &chan, None, if use_dust { HTLCType::NONE } else { HTLCType::SUCCESS });
5960 check_closed_broadcast!(nodes[1], true);
5961 check_added_monitors!(nodes[1], 1);
5964 fn do_htlc_claim_current_remote_commitment_only(use_dust: bool) {
5965 let chanmon_cfgs = create_chanmon_cfgs(2);
5966 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5967 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5968 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5969 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5970 let logger = test_utils::TestLogger::new();
5972 let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[1]);
5973 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
5974 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), if use_dust { 50000 } else { 3000000 }, TEST_FINAL_CLTV, &logger).unwrap();
5975 nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
5976 check_added_monitors!(nodes[0], 1);
5978 let _as_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
5980 // As far as A is concerned, the HTLC is now present only in the latest remote commitment
5981 // transaction, however it is not in A's latest local commitment, so we can just broadcast that
5982 // to "time out" the HTLC.
5984 let starting_block = nodes[1].best_block_info();
5985 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: starting_block.0, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5987 for _ in starting_block.1 + 1..TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + starting_block.1 + 2 {
5988 connect_block(&nodes[0], &Block { header, txdata: Vec::new()});
5989 header.prev_blockhash = header.block_hash();
5991 test_txn_broadcast(&nodes[0], &chan, None, HTLCType::NONE);
5992 check_closed_broadcast!(nodes[0], true);
5993 check_added_monitors!(nodes[0], 1);
5996 fn do_htlc_claim_previous_remote_commitment_only(use_dust: bool, check_revoke_no_close: bool) {
5997 let chanmon_cfgs = create_chanmon_cfgs(3);
5998 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
5999 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
6000 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
6001 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6003 // Fail the payment, but don't deliver A's final RAA, resulting in the HTLC only being present
6004 // in B's previous (unrevoked) commitment transaction, but none of A's commitment transactions.
6005 // Also optionally test that we *don't* fail the channel in case the commitment transaction was
6006 // actually revoked.
6007 let htlc_value = if use_dust { 50000 } else { 3000000 };
6008 let (_, our_payment_hash, _) = route_payment(&nodes[0], &[&nodes[1]], htlc_value);
6009 assert!(nodes[1].node.fail_htlc_backwards(&our_payment_hash));
6010 expect_pending_htlcs_forwardable!(nodes[1]);
6011 check_added_monitors!(nodes[1], 1);
6013 let bs_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
6014 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.update_fail_htlcs[0]);
6015 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_updates.commitment_signed);
6016 check_added_monitors!(nodes[0], 1);
6017 let as_updates = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6018 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_updates.0);
6019 check_added_monitors!(nodes[1], 1);
6020 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_updates.1);
6021 check_added_monitors!(nodes[1], 1);
6022 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
6024 if check_revoke_no_close {
6025 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack);
6026 check_added_monitors!(nodes[0], 1);
6029 let starting_block = nodes[1].best_block_info();
6030 let mut block = Block {
6031 header: BlockHeader { version: 0x20000000, prev_blockhash: starting_block.0, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
6034 for _ in starting_block.1 + 1..TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + CHAN_CONFIRM_DEPTH + 2 {
6035 connect_block(&nodes[0], &block);
6036 block.header.prev_blockhash = block.block_hash();
6038 if !check_revoke_no_close {
6039 test_txn_broadcast(&nodes[0], &chan, None, HTLCType::NONE);
6040 check_closed_broadcast!(nodes[0], true);
6041 check_added_monitors!(nodes[0], 1);
6043 expect_payment_failed!(nodes[0], our_payment_hash, true);
6047 // Test that we close channels on-chain when broadcastable HTLCs reach their timeout window.
6048 // There are only a few cases to test here:
6049 // * its not really normative behavior, but we test that below-dust HTLCs "included" in
6050 // broadcastable commitment transactions result in channel closure,
6051 // * its included in an unrevoked-but-previous remote commitment transaction,
6052 // * its included in the latest remote or local commitment transactions.
6053 // We test each of the three possible commitment transactions individually and use both dust and
6055 // Note that we don't bother testing both outbound and inbound HTLC failures for each case, and we
6056 // assume they are handled the same across all six cases, as both outbound and inbound failures are
6057 // tested for at least one of the cases in other tests.
6059 fn htlc_claim_single_commitment_only_a() {
6060 do_htlc_claim_local_commitment_only(true);
6061 do_htlc_claim_local_commitment_only(false);
6063 do_htlc_claim_current_remote_commitment_only(true);
6064 do_htlc_claim_current_remote_commitment_only(false);
6068 fn htlc_claim_single_commitment_only_b() {
6069 do_htlc_claim_previous_remote_commitment_only(true, false);
6070 do_htlc_claim_previous_remote_commitment_only(false, false);
6071 do_htlc_claim_previous_remote_commitment_only(true, true);
6072 do_htlc_claim_previous_remote_commitment_only(false, true);
6077 fn bolt2_open_channel_sending_node_checks_part1() { //This test needs to be on its own as we are catching a panic
6078 let chanmon_cfgs = create_chanmon_cfgs(2);
6079 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6080 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6081 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6082 //Force duplicate channel ids
6083 for node in nodes.iter() {
6084 *node.keys_manager.override_channel_id_priv.lock().unwrap() = Some([0; 32]);
6087 // BOLT #2 spec: Sending node must ensure temporary_channel_id is unique from any other channel ID with the same peer.
6088 let channel_value_satoshis=10000;
6089 let push_msat=10001;
6090 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).unwrap();
6091 let node0_to_1_send_open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
6092 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &node0_to_1_send_open_channel);
6094 //Create a second channel with a channel_id collision
6095 assert!(nodes[0].node.create_channel(nodes[0].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).is_err());
6099 fn bolt2_open_channel_sending_node_checks_part2() {
6100 let chanmon_cfgs = create_chanmon_cfgs(2);
6101 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6102 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6103 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6105 // BOLT #2 spec: Sending node must set funding_satoshis to less than 2^24 satoshis
6106 let channel_value_satoshis=2^24;
6107 let push_msat=10001;
6108 assert!(nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).is_err());
6110 // BOLT #2 spec: Sending node must set push_msat to equal or less than 1000 * funding_satoshis
6111 let channel_value_satoshis=10000;
6112 // Test when push_msat is equal to 1000 * funding_satoshis.
6113 let push_msat=1000*channel_value_satoshis+1;
6114 assert!(nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).is_err());
6116 // BOLT #2 spec: Sending node must set set channel_reserve_satoshis greater than or equal to dust_limit_satoshis
6117 let channel_value_satoshis=10000;
6118 let push_msat=10001;
6119 assert!(nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).is_ok()); //Create a valid channel
6120 let node0_to_1_send_open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
6121 assert!(node0_to_1_send_open_channel.channel_reserve_satoshis>=node0_to_1_send_open_channel.dust_limit_satoshis);
6123 // BOLT #2 spec: Sending node must set undefined bits in channel_flags to 0
6124 // Only the least-significant bit of channel_flags is currently defined resulting in channel_flags only having one of two possible states 0 or 1
6125 assert!(node0_to_1_send_open_channel.channel_flags<=1);
6127 // BOLT #2 spec: Sending node should set to_self_delay sufficient to ensure the sender can irreversibly spend a commitment transaction output, in case of misbehaviour by the receiver.
6128 assert!(BREAKDOWN_TIMEOUT>0);
6129 assert!(node0_to_1_send_open_channel.to_self_delay==BREAKDOWN_TIMEOUT);
6131 // BOLT #2 spec: Sending node must ensure the chain_hash value identifies the chain it wishes to open the channel within.
6132 let chain_hash=genesis_block(Network::Testnet).header.block_hash();
6133 assert_eq!(node0_to_1_send_open_channel.chain_hash,chain_hash);
6135 // BOLT #2 spec: Sending node must set funding_pubkey, revocation_basepoint, htlc_basepoint, payment_basepoint, and delayed_payment_basepoint to valid DER-encoded, compressed, secp256k1 pubkeys.
6136 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.funding_pubkey.serialize()).is_ok());
6137 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.revocation_basepoint.serialize()).is_ok());
6138 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.htlc_basepoint.serialize()).is_ok());
6139 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.payment_point.serialize()).is_ok());
6140 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.delayed_payment_basepoint.serialize()).is_ok());
6144 fn bolt2_open_channel_sane_dust_limit() {
6145 let chanmon_cfgs = create_chanmon_cfgs(2);
6146 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6147 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6148 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6150 let channel_value_satoshis=1000000;
6151 let push_msat=10001;
6152 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).unwrap();
6153 let mut node0_to_1_send_open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
6154 node0_to_1_send_open_channel.dust_limit_satoshis = 661;
6155 node0_to_1_send_open_channel.channel_reserve_satoshis = 100001;
6157 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &node0_to_1_send_open_channel);
6158 let events = nodes[1].node.get_and_clear_pending_msg_events();
6159 let err_msg = match events[0] {
6160 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id: _ } => {
6163 _ => panic!("Unexpected event"),
6165 assert_eq!(err_msg.data, "dust_limit_satoshis (661) is greater than the implementation limit (660)");
6168 // Test that if we fail to send an HTLC that is being freed from the holding cell, and the HTLC
6169 // originated from our node, its failure is surfaced to the user. We trigger this failure to
6170 // free the HTLC by increasing our fee while the HTLC is in the holding cell such that the HTLC
6171 // is no longer affordable once it's freed.
6173 fn test_fail_holding_cell_htlc_upon_free() {
6174 let chanmon_cfgs = create_chanmon_cfgs(2);
6175 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6176 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6177 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6178 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6179 let logger = test_utils::TestLogger::new();
6181 // First nodes[0] generates an update_fee, setting the channel's
6182 // pending_update_fee.
6183 nodes[0].node.update_fee(chan.2, get_feerate!(nodes[0], chan.2) + 20).unwrap();
6184 check_added_monitors!(nodes[0], 1);
6186 let events = nodes[0].node.get_and_clear_pending_msg_events();
6187 assert_eq!(events.len(), 1);
6188 let (update_msg, commitment_signed) = match events[0] {
6189 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
6190 (update_fee.as_ref(), commitment_signed)
6192 _ => panic!("Unexpected event"),
6195 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
6197 let mut chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6198 let channel_reserve = chan_stat.channel_reserve_msat;
6199 let feerate = get_feerate!(nodes[0], chan.2);
6201 // 2* and +1 HTLCs on the commit tx fee calculation for the fee spike reserve.
6202 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6203 let max_can_send = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 1 + 1);
6204 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6205 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], max_can_send, TEST_FINAL_CLTV, &logger).unwrap();
6207 // Send a payment which passes reserve checks but gets stuck in the holding cell.
6208 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6209 chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6210 assert_eq!(chan_stat.holding_cell_outbound_amount_msat, max_can_send);
6212 // Flush the pending fee update.
6213 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
6214 let (as_revoke_and_ack, _) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
6215 check_added_monitors!(nodes[1], 1);
6216 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_revoke_and_ack);
6217 check_added_monitors!(nodes[0], 1);
6219 // Upon receipt of the RAA, there will be an attempt to resend the holding cell
6220 // HTLC, but now that the fee has been raised the payment will now fail, causing
6221 // us to surface its failure to the user.
6222 chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6223 assert_eq!(chan_stat.holding_cell_outbound_amount_msat, 0);
6224 nodes[0].logger.assert_log("lightning::ln::channel".to_string(), "Freeing holding cell with 1 HTLC updates".to_string(), 1);
6225 let failure_log = format!("Failed to send HTLC with payment_hash {} due to Cannot send value that would put our balance under counterparty-announced channel reserve value ({})", log_bytes!(our_payment_hash.0), chan_stat.channel_reserve_msat);
6226 nodes[0].logger.assert_log("lightning::ln::channel".to_string(), failure_log.to_string(), 1);
6228 // Check that the payment failed to be sent out.
6229 let events = nodes[0].node.get_and_clear_pending_events();
6230 assert_eq!(events.len(), 1);
6232 &Event::PaymentFailed { ref payment_hash, ref rejected_by_dest, ref error_code, ref error_data } => {
6233 assert_eq!(our_payment_hash.clone(), *payment_hash);
6234 assert_eq!(*rejected_by_dest, false);
6235 assert_eq!(*error_code, None);
6236 assert_eq!(*error_data, None);
6238 _ => panic!("Unexpected event"),
6242 // Test that if multiple HTLCs are released from the holding cell and one is
6243 // valid but the other is no longer valid upon release, the valid HTLC can be
6244 // successfully completed while the other one fails as expected.
6246 fn test_free_and_fail_holding_cell_htlcs() {
6247 let chanmon_cfgs = create_chanmon_cfgs(2);
6248 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6249 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6250 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6251 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6252 let logger = test_utils::TestLogger::new();
6254 // First nodes[0] generates an update_fee, setting the channel's
6255 // pending_update_fee.
6256 nodes[0].node.update_fee(chan.2, get_feerate!(nodes[0], chan.2) + 200).unwrap();
6257 check_added_monitors!(nodes[0], 1);
6259 let events = nodes[0].node.get_and_clear_pending_msg_events();
6260 assert_eq!(events.len(), 1);
6261 let (update_msg, commitment_signed) = match events[0] {
6262 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
6263 (update_fee.as_ref(), commitment_signed)
6265 _ => panic!("Unexpected event"),
6268 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
6270 let mut chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6271 let channel_reserve = chan_stat.channel_reserve_msat;
6272 let feerate = get_feerate!(nodes[0], chan.2);
6274 // 2* and +1 HTLCs on the commit tx fee calculation for the fee spike reserve.
6275 let (payment_preimage_1, payment_hash_1, payment_secret_1) = get_payment_preimage_hash!(nodes[1]);
6277 let (_, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[1]);
6278 let amt_2 = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 2 + 1) - amt_1;
6279 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6280 let route_1 = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], amt_1, TEST_FINAL_CLTV, &logger).unwrap();
6281 let route_2 = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], amt_2, TEST_FINAL_CLTV, &logger).unwrap();
6283 // Send 2 payments which pass reserve checks but get stuck in the holding cell.
6284 nodes[0].node.send_payment(&route_1, payment_hash_1, &Some(payment_secret_1)).unwrap();
6285 chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6286 assert_eq!(chan_stat.holding_cell_outbound_amount_msat, amt_1);
6287 nodes[0].node.send_payment(&route_2, payment_hash_2, &Some(payment_secret_2)).unwrap();
6288 chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6289 assert_eq!(chan_stat.holding_cell_outbound_amount_msat, amt_1 + amt_2);
6291 // Flush the pending fee update.
6292 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
6293 let (revoke_and_ack, commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
6294 check_added_monitors!(nodes[1], 1);
6295 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_and_ack);
6296 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed);
6297 check_added_monitors!(nodes[0], 2);
6299 // Upon receipt of the RAA, there will be an attempt to resend the holding cell HTLCs,
6300 // but now that the fee has been raised the second payment will now fail, causing us
6301 // to surface its failure to the user. The first payment should succeed.
6302 chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6303 assert_eq!(chan_stat.holding_cell_outbound_amount_msat, 0);
6304 nodes[0].logger.assert_log("lightning::ln::channel".to_string(), "Freeing holding cell with 2 HTLC updates".to_string(), 1);
6305 let failure_log = format!("Failed to send HTLC with payment_hash {} due to Cannot send value that would put our balance under counterparty-announced channel reserve value ({})", log_bytes!(payment_hash_2.0), chan_stat.channel_reserve_msat);
6306 nodes[0].logger.assert_log("lightning::ln::channel".to_string(), failure_log.to_string(), 1);
6308 // Check that the second payment failed to be sent out.
6309 let events = nodes[0].node.get_and_clear_pending_events();
6310 assert_eq!(events.len(), 1);
6312 &Event::PaymentFailed { ref payment_hash, ref rejected_by_dest, ref error_code, ref error_data } => {
6313 assert_eq!(payment_hash_2.clone(), *payment_hash);
6314 assert_eq!(*rejected_by_dest, false);
6315 assert_eq!(*error_code, None);
6316 assert_eq!(*error_data, None);
6318 _ => panic!("Unexpected event"),
6321 // Complete the first payment and the RAA from the fee update.
6322 let (payment_event, send_raa_event) = {
6323 let mut msgs = nodes[0].node.get_and_clear_pending_msg_events();
6324 assert_eq!(msgs.len(), 2);
6325 (SendEvent::from_event(msgs.remove(0)), msgs.remove(0))
6327 let raa = match send_raa_event {
6328 MessageSendEvent::SendRevokeAndACK { msg, .. } => msg,
6329 _ => panic!("Unexpected event"),
6331 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &raa);
6332 check_added_monitors!(nodes[1], 1);
6333 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
6334 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
6335 let events = nodes[1].node.get_and_clear_pending_events();
6336 assert_eq!(events.len(), 1);
6338 Event::PendingHTLCsForwardable { .. } => {},
6339 _ => panic!("Unexpected event"),
6341 nodes[1].node.process_pending_htlc_forwards();
6342 let events = nodes[1].node.get_and_clear_pending_events();
6343 assert_eq!(events.len(), 1);
6345 Event::PaymentReceived { .. } => {},
6346 _ => panic!("Unexpected event"),
6348 nodes[1].node.claim_funds(payment_preimage_1);
6349 check_added_monitors!(nodes[1], 1);
6350 let update_msgs = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
6351 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_msgs.update_fulfill_htlcs[0]);
6352 commitment_signed_dance!(nodes[0], nodes[1], update_msgs.commitment_signed, false, true);
6353 let events = nodes[0].node.get_and_clear_pending_events();
6354 assert_eq!(events.len(), 1);
6356 Event::PaymentSent { ref payment_preimage } => {
6357 assert_eq!(*payment_preimage, payment_preimage_1);
6359 _ => panic!("Unexpected event"),
6363 // Test that if we fail to forward an HTLC that is being freed from the holding cell that the
6364 // HTLC is failed backwards. We trigger this failure to forward the freed HTLC by increasing
6365 // our fee while the HTLC is in the holding cell such that the HTLC is no longer affordable
6368 fn test_fail_holding_cell_htlc_upon_free_multihop() {
6369 let chanmon_cfgs = create_chanmon_cfgs(3);
6370 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
6371 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
6372 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
6373 let chan_0_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6374 let chan_1_2 = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6375 let logger = test_utils::TestLogger::new();
6377 // First nodes[1] generates an update_fee, setting the channel's
6378 // pending_update_fee.
6379 nodes[1].node.update_fee(chan_1_2.2, get_feerate!(nodes[1], chan_1_2.2) + 20).unwrap();
6380 check_added_monitors!(nodes[1], 1);
6382 let events = nodes[1].node.get_and_clear_pending_msg_events();
6383 assert_eq!(events.len(), 1);
6384 let (update_msg, commitment_signed) = match events[0] {
6385 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
6386 (update_fee.as_ref(), commitment_signed)
6388 _ => panic!("Unexpected event"),
6391 nodes[2].node.handle_update_fee(&nodes[1].node.get_our_node_id(), update_msg.unwrap());
6393 let mut chan_stat = get_channel_value_stat!(nodes[0], chan_0_1.2);
6394 let channel_reserve = chan_stat.channel_reserve_msat;
6395 let feerate = get_feerate!(nodes[0], chan_0_1.2);
6397 // Send a payment which passes reserve checks but gets stuck in the holding cell.
6399 let total_routing_fee_msat = (nodes.len() - 2) as u64 * feemsat;
6400 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[2]);
6401 let max_can_send = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 1 + 1) - total_routing_fee_msat;
6402 let payment_event = {
6403 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6404 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], max_can_send, TEST_FINAL_CLTV, &logger).unwrap();
6405 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6406 check_added_monitors!(nodes[0], 1);
6408 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
6409 assert_eq!(events.len(), 1);
6411 SendEvent::from_event(events.remove(0))
6413 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
6414 check_added_monitors!(nodes[1], 0);
6415 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
6416 expect_pending_htlcs_forwardable!(nodes[1]);
6418 chan_stat = get_channel_value_stat!(nodes[1], chan_1_2.2);
6419 assert_eq!(chan_stat.holding_cell_outbound_amount_msat, max_can_send);
6421 // Flush the pending fee update.
6422 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), commitment_signed);
6423 let (raa, commitment_signed) = get_revoke_commit_msgs!(nodes[2], nodes[1].node.get_our_node_id());
6424 check_added_monitors!(nodes[2], 1);
6425 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &raa);
6426 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &commitment_signed);
6427 check_added_monitors!(nodes[1], 2);
6429 // A final RAA message is generated to finalize the fee update.
6430 let events = nodes[1].node.get_and_clear_pending_msg_events();
6431 assert_eq!(events.len(), 1);
6433 let raa_msg = match &events[0] {
6434 &MessageSendEvent::SendRevokeAndACK { ref msg, .. } => {
6437 _ => panic!("Unexpected event"),
6440 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &raa_msg);
6441 check_added_monitors!(nodes[2], 1);
6442 assert!(nodes[2].node.get_and_clear_pending_msg_events().is_empty());
6444 // nodes[1]'s ChannelManager will now signal that we have HTLC forwards to process.
6445 let process_htlc_forwards_event = nodes[1].node.get_and_clear_pending_events();
6446 assert_eq!(process_htlc_forwards_event.len(), 1);
6447 match &process_htlc_forwards_event[0] {
6448 &Event::PendingHTLCsForwardable { .. } => {},
6449 _ => panic!("Unexpected event"),
6452 // In response, we call ChannelManager's process_pending_htlc_forwards
6453 nodes[1].node.process_pending_htlc_forwards();
6454 check_added_monitors!(nodes[1], 1);
6456 // This causes the HTLC to be failed backwards.
6457 let fail_event = nodes[1].node.get_and_clear_pending_msg_events();
6458 assert_eq!(fail_event.len(), 1);
6459 let (fail_msg, commitment_signed) = match &fail_event[0] {
6460 &MessageSendEvent::UpdateHTLCs { ref updates, .. } => {
6461 assert_eq!(updates.update_add_htlcs.len(), 0);
6462 assert_eq!(updates.update_fulfill_htlcs.len(), 0);
6463 assert_eq!(updates.update_fail_malformed_htlcs.len(), 0);
6464 assert_eq!(updates.update_fail_htlcs.len(), 1);
6465 (updates.update_fail_htlcs[0].clone(), updates.commitment_signed.clone())
6467 _ => panic!("Unexpected event"),
6470 // Pass the failure messages back to nodes[0].
6471 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &fail_msg);
6472 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed);
6474 // Complete the HTLC failure+removal process.
6475 let (raa, commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6476 check_added_monitors!(nodes[0], 1);
6477 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &raa);
6478 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &commitment_signed);
6479 check_added_monitors!(nodes[1], 2);
6480 let final_raa_event = nodes[1].node.get_and_clear_pending_msg_events();
6481 assert_eq!(final_raa_event.len(), 1);
6482 let raa = match &final_raa_event[0] {
6483 &MessageSendEvent::SendRevokeAndACK { ref msg, .. } => msg.clone(),
6484 _ => panic!("Unexpected event"),
6486 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &raa);
6487 let fail_msg_event = nodes[0].node.get_and_clear_pending_msg_events();
6488 assert_eq!(fail_msg_event.len(), 1);
6489 match &fail_msg_event[0] {
6490 &MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
6491 _ => panic!("Unexpected event"),
6493 let failure_event = nodes[0].node.get_and_clear_pending_events();
6494 assert_eq!(failure_event.len(), 1);
6495 match &failure_event[0] {
6496 &Event::PaymentFailed { rejected_by_dest, .. } => {
6497 assert!(!rejected_by_dest);
6499 _ => panic!("Unexpected event"),
6501 check_added_monitors!(nodes[0], 1);
6504 // BOLT 2 Requirements for the Sender when constructing and sending an update_add_htlc message.
6505 // BOLT 2 Requirement: MUST NOT offer amount_msat it cannot pay for in the remote commitment transaction at the current feerate_per_kw (see "Updating Fees") while maintaining its channel reserve.
6506 //TODO: I don't believe this is explicitly enforced when sending an HTLC but as the Fee aspect of the BOLT specs is in flux leaving this as a TODO.
6509 fn test_update_add_htlc_bolt2_sender_value_below_minimum_msat() {
6510 //BOLT2 Requirement: MUST NOT offer amount_msat below the receiving node's htlc_minimum_msat (same validation check catches both of these)
6511 let chanmon_cfgs = create_chanmon_cfgs(2);
6512 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6513 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6514 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6515 let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6517 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6518 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6519 let logger = test_utils::TestLogger::new();
6520 let mut route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
6521 route.paths[0][0].fee_msat = 100;
6523 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)), true, APIError::ChannelUnavailable { ref err },
6524 assert!(regex::Regex::new(r"Cannot send less than their minimum HTLC value \(\d+\)").unwrap().is_match(err)));
6525 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
6526 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot send less than their minimum HTLC value".to_string(), 1);
6530 fn test_update_add_htlc_bolt2_sender_zero_value_msat() {
6531 //BOLT2 Requirement: MUST offer amount_msat greater than 0.
6532 let chanmon_cfgs = create_chanmon_cfgs(2);
6533 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6534 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6535 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6536 let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6537 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6539 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6540 let logger = test_utils::TestLogger::new();
6541 let mut route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
6542 route.paths[0][0].fee_msat = 0;
6543 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)), true, APIError::ChannelUnavailable { ref err },
6544 assert_eq!(err, "Cannot send 0-msat HTLC"));
6546 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
6547 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot send 0-msat HTLC".to_string(), 1);
6551 fn test_update_add_htlc_bolt2_receiver_zero_value_msat() {
6552 //BOLT2 Requirement: MUST offer amount_msat greater than 0.
6553 let chanmon_cfgs = create_chanmon_cfgs(2);
6554 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6555 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6556 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6557 let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6559 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6560 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6561 let logger = test_utils::TestLogger::new();
6562 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
6563 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6564 check_added_monitors!(nodes[0], 1);
6565 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6566 updates.update_add_htlcs[0].amount_msat = 0;
6568 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6569 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Remote side tried to send a 0-msat HTLC".to_string(), 1);
6570 check_closed_broadcast!(nodes[1], true).unwrap();
6571 check_added_monitors!(nodes[1], 1);
6575 fn test_update_add_htlc_bolt2_sender_cltv_expiry_too_high() {
6576 //BOLT 2 Requirement: MUST set cltv_expiry less than 500000000.
6577 //It is enforced when constructing a route.
6578 let chanmon_cfgs = create_chanmon_cfgs(2);
6579 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6580 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6581 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6582 let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 0, InitFeatures::known(), InitFeatures::known());
6583 let logger = test_utils::TestLogger::new();
6585 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6587 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6588 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000000, 500000001, &logger).unwrap();
6589 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)), true, APIError::RouteError { ref err },
6590 assert_eq!(err, &"Channel CLTV overflowed?"));
6594 fn test_update_add_htlc_bolt2_sender_exceed_max_htlc_num_and_htlc_id_increment() {
6595 //BOLT 2 Requirement: if result would be offering more than the remote's max_accepted_htlcs HTLCs, in the remote commitment transaction: MUST NOT add an HTLC.
6596 //BOLT 2 Requirement: for the first HTLC it offers MUST set id to 0.
6597 //BOLT 2 Requirement: MUST increase the value of id by 1 for each successive offer.
6598 let chanmon_cfgs = create_chanmon_cfgs(2);
6599 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6600 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6601 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6602 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 0, InitFeatures::known(), InitFeatures::known());
6603 let max_accepted_htlcs = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().counterparty_max_accepted_htlcs as u64;
6605 let logger = test_utils::TestLogger::new();
6606 for i in 0..max_accepted_htlcs {
6607 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6608 let payment_event = {
6609 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6610 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
6611 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6612 check_added_monitors!(nodes[0], 1);
6614 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
6615 assert_eq!(events.len(), 1);
6616 if let MessageSendEvent::UpdateHTLCs { node_id: _, updates: msgs::CommitmentUpdate{ update_add_htlcs: ref htlcs, .. }, } = events[0] {
6617 assert_eq!(htlcs[0].htlc_id, i);
6621 SendEvent::from_event(events.remove(0))
6623 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
6624 check_added_monitors!(nodes[1], 0);
6625 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
6627 expect_pending_htlcs_forwardable!(nodes[1]);
6628 expect_payment_received!(nodes[1], our_payment_hash, our_payment_secret, 100000);
6630 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6631 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6632 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
6633 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)), true, APIError::ChannelUnavailable { ref err },
6634 assert!(regex::Regex::new(r"Cannot push more than their max accepted HTLCs \(\d+\)").unwrap().is_match(err)));
6636 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
6637 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot push more than their max accepted HTLCs".to_string(), 1);
6641 fn test_update_add_htlc_bolt2_sender_exceed_max_htlc_value_in_flight() {
6642 //BOLT 2 Requirement: if the sum of total offered HTLCs would exceed the remote's max_htlc_value_in_flight_msat: MUST NOT add an HTLC.
6643 let chanmon_cfgs = create_chanmon_cfgs(2);
6644 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6645 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6646 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6647 let channel_value = 100000;
6648 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, channel_value, 0, InitFeatures::known(), InitFeatures::known());
6649 let max_in_flight = get_channel_value_stat!(nodes[0], chan.2).counterparty_max_htlc_value_in_flight_msat;
6651 send_payment(&nodes[0], &vec!(&nodes[1])[..], max_in_flight);
6653 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6654 // Manually create a route over our max in flight (which our router normally automatically
6656 let route = Route { paths: vec![vec![RouteHop {
6657 pubkey: nodes[1].node.get_our_node_id(), node_features: NodeFeatures::known(), channel_features: ChannelFeatures::known(),
6658 short_channel_id: nodes[1].node.list_usable_channels()[0].short_channel_id.unwrap(),
6659 fee_msat: max_in_flight + 1, cltv_expiry_delta: TEST_FINAL_CLTV
6661 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)), true, APIError::ChannelUnavailable { ref err },
6662 assert!(regex::Regex::new(r"Cannot send value that would put us over the max HTLC value in flight our peer will accept \(\d+\)").unwrap().is_match(err)));
6664 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
6665 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot send value that would put us over the max HTLC value in flight our peer will accept".to_string(), 1);
6667 send_payment(&nodes[0], &[&nodes[1]], max_in_flight);
6670 // BOLT 2 Requirements for the Receiver when handling an update_add_htlc message.
6672 fn test_update_add_htlc_bolt2_receiver_check_amount_received_more_than_min() {
6673 //BOLT2 Requirement: receiving an amount_msat equal to 0, OR less than its own htlc_minimum_msat -> SHOULD fail the channel.
6674 let chanmon_cfgs = create_chanmon_cfgs(2);
6675 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6676 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6677 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6678 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6679 let htlc_minimum_msat: u64;
6681 let chan_lock = nodes[0].node.channel_state.lock().unwrap();
6682 let channel = chan_lock.by_id.get(&chan.2).unwrap();
6683 htlc_minimum_msat = channel.get_holder_htlc_minimum_msat();
6686 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6687 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6688 let logger = test_utils::TestLogger::new();
6689 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], htlc_minimum_msat, TEST_FINAL_CLTV, &logger).unwrap();
6690 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6691 check_added_monitors!(nodes[0], 1);
6692 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6693 updates.update_add_htlcs[0].amount_msat = htlc_minimum_msat-1;
6694 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6695 assert!(nodes[1].node.list_channels().is_empty());
6696 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6697 assert!(regex::Regex::new(r"Remote side tried to send less than our minimum HTLC value\. Lower limit: \(\d+\)\. Actual: \(\d+\)").unwrap().is_match(err_msg.data.as_str()));
6698 check_added_monitors!(nodes[1], 1);
6702 fn test_update_add_htlc_bolt2_receiver_sender_can_afford_amount_sent() {
6703 //BOLT2 Requirement: receiving an amount_msat that the sending node cannot afford at the current feerate_per_kw (while maintaining its channel reserve): SHOULD fail the channel
6704 let chanmon_cfgs = create_chanmon_cfgs(2);
6705 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6706 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6707 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6708 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6709 let logger = test_utils::TestLogger::new();
6711 let chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6712 let channel_reserve = chan_stat.channel_reserve_msat;
6713 let feerate = get_feerate!(nodes[0], chan.2);
6714 // The 2* and +1 are for the fee spike reserve.
6715 let commit_tx_fee_outbound = 2 * commit_tx_fee_msat(feerate, 1 + 1);
6717 let max_can_send = 5000000 - channel_reserve - commit_tx_fee_outbound;
6718 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6719 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6720 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], max_can_send, TEST_FINAL_CLTV, &logger).unwrap();
6721 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6722 check_added_monitors!(nodes[0], 1);
6723 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6725 // Even though channel-initiator senders are required to respect the fee_spike_reserve,
6726 // at this time channel-initiatee receivers are not required to enforce that senders
6727 // respect the fee_spike_reserve.
6728 updates.update_add_htlcs[0].amount_msat = max_can_send + commit_tx_fee_outbound + 1;
6729 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6731 assert!(nodes[1].node.list_channels().is_empty());
6732 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6733 assert_eq!(err_msg.data, "Remote HTLC add would put them under remote reserve value");
6734 check_added_monitors!(nodes[1], 1);
6738 fn test_update_add_htlc_bolt2_receiver_check_max_htlc_limit() {
6739 //BOLT 2 Requirement: if a sending node adds more than its max_accepted_htlcs HTLCs to its local commitment transaction: SHOULD fail the channel
6740 //BOLT 2 Requirement: MUST allow multiple HTLCs with the same payment_hash.
6741 let chanmon_cfgs = create_chanmon_cfgs(2);
6742 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6743 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6744 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6745 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6746 let logger = test_utils::TestLogger::new();
6748 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6749 let session_priv = SecretKey::from_slice(&[42; 32]).unwrap();
6751 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6752 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 3999999, TEST_FINAL_CLTV, &logger).unwrap();
6754 let cur_height = nodes[0].node.best_block.read().unwrap().height() + 1;
6755 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::signing_only(), &route.paths[0], &session_priv).unwrap();
6756 let (onion_payloads, _htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route.paths[0], 3999999, &Some(our_payment_secret), cur_height).unwrap();
6757 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &our_payment_hash);
6759 let mut msg = msgs::UpdateAddHTLC {
6763 payment_hash: our_payment_hash,
6764 cltv_expiry: htlc_cltv,
6765 onion_routing_packet: onion_packet.clone(),
6768 for i in 0..super::channel::OUR_MAX_HTLCS {
6769 msg.htlc_id = i as u64;
6770 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg);
6772 msg.htlc_id = (super::channel::OUR_MAX_HTLCS) as u64;
6773 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg);
6775 assert!(nodes[1].node.list_channels().is_empty());
6776 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6777 assert!(regex::Regex::new(r"Remote tried to push more than our max accepted HTLCs \(\d+\)").unwrap().is_match(err_msg.data.as_str()));
6778 check_added_monitors!(nodes[1], 1);
6782 fn test_update_add_htlc_bolt2_receiver_check_max_in_flight_msat() {
6783 //OR adds more than its max_htlc_value_in_flight_msat worth of offered HTLCs to its local commitment transaction: SHOULD fail the channel
6784 let chanmon_cfgs = create_chanmon_cfgs(2);
6785 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6786 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6787 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6788 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
6789 let logger = test_utils::TestLogger::new();
6791 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6792 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6793 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6794 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6795 check_added_monitors!(nodes[0], 1);
6796 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6797 updates.update_add_htlcs[0].amount_msat = get_channel_value_stat!(nodes[1], chan.2).counterparty_max_htlc_value_in_flight_msat + 1;
6798 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6800 assert!(nodes[1].node.list_channels().is_empty());
6801 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6802 assert!(regex::Regex::new("Remote HTLC add would put them over our max HTLC value").unwrap().is_match(err_msg.data.as_str()));
6803 check_added_monitors!(nodes[1], 1);
6807 fn test_update_add_htlc_bolt2_receiver_check_cltv_expiry() {
6808 //BOLT2 Requirement: if sending node sets cltv_expiry to greater or equal to 500000000: SHOULD fail the channel.
6809 let chanmon_cfgs = create_chanmon_cfgs(2);
6810 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6811 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6812 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6813 let logger = test_utils::TestLogger::new();
6815 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6816 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6817 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6818 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6819 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6820 check_added_monitors!(nodes[0], 1);
6821 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6822 updates.update_add_htlcs[0].cltv_expiry = 500000000;
6823 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6825 assert!(nodes[1].node.list_channels().is_empty());
6826 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6827 assert_eq!(err_msg.data,"Remote provided CLTV expiry in seconds instead of block height");
6828 check_added_monitors!(nodes[1], 1);
6832 fn test_update_add_htlc_bolt2_receiver_check_repeated_id_ignore() {
6833 //BOLT 2 requirement: if the sender did not previously acknowledge the commitment of that HTLC: MUST ignore a repeated id value after a reconnection.
6834 // We test this by first testing that that repeated HTLCs pass commitment signature checks
6835 // after disconnect and that non-sequential htlc_ids result in a channel failure.
6836 let chanmon_cfgs = create_chanmon_cfgs(2);
6837 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6838 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6839 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6840 let logger = test_utils::TestLogger::new();
6842 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6843 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6844 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6845 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6846 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6847 check_added_monitors!(nodes[0], 1);
6848 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6849 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6851 //Disconnect and Reconnect
6852 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
6853 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
6854 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
6855 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
6856 assert_eq!(reestablish_1.len(), 1);
6857 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
6858 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
6859 assert_eq!(reestablish_2.len(), 1);
6860 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
6861 handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
6862 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
6863 handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
6866 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6867 assert_eq!(updates.commitment_signed.htlc_signatures.len(), 1);
6868 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &updates.commitment_signed);
6869 check_added_monitors!(nodes[1], 1);
6870 let _bs_responses = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
6872 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6874 assert!(nodes[1].node.list_channels().is_empty());
6875 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6876 assert!(regex::Regex::new(r"Remote skipped HTLC ID \(skipped ID: \d+\)").unwrap().is_match(err_msg.data.as_str()));
6877 check_added_monitors!(nodes[1], 1);
6881 fn test_update_fulfill_htlc_bolt2_update_fulfill_htlc_before_commitment() {
6882 //BOLT 2 Requirement: until the corresponding HTLC is irrevocably committed in both sides' commitment transactions: MUST NOT send an update_fulfill_htlc, update_fail_htlc, or update_fail_malformed_htlc.
6884 let chanmon_cfgs = create_chanmon_cfgs(2);
6885 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6886 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6887 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6888 let logger = test_utils::TestLogger::new();
6889 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6890 let (our_payment_preimage, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6891 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6892 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6893 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6895 check_added_monitors!(nodes[0], 1);
6896 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6897 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6899 let update_msg = msgs::UpdateFulfillHTLC{
6902 payment_preimage: our_payment_preimage,
6905 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_msg);
6907 assert!(nodes[0].node.list_channels().is_empty());
6908 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6909 assert!(regex::Regex::new(r"Remote tried to fulfill/fail HTLC \(\d+\) before it had been committed").unwrap().is_match(err_msg.data.as_str()));
6910 check_added_monitors!(nodes[0], 1);
6914 fn test_update_fulfill_htlc_bolt2_update_fail_htlc_before_commitment() {
6915 //BOLT 2 Requirement: until the corresponding HTLC is irrevocably committed in both sides' commitment transactions: MUST NOT send an update_fulfill_htlc, update_fail_htlc, or update_fail_malformed_htlc.
6917 let chanmon_cfgs = create_chanmon_cfgs(2);
6918 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6919 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6920 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6921 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6922 let logger = test_utils::TestLogger::new();
6924 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6925 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6926 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6927 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6928 check_added_monitors!(nodes[0], 1);
6929 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6930 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6932 let update_msg = msgs::UpdateFailHTLC{
6935 reason: msgs::OnionErrorPacket { data: Vec::new()},
6938 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_msg);
6940 assert!(nodes[0].node.list_channels().is_empty());
6941 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6942 assert!(regex::Regex::new(r"Remote tried to fulfill/fail HTLC \(\d+\) before it had been committed").unwrap().is_match(err_msg.data.as_str()));
6943 check_added_monitors!(nodes[0], 1);
6947 fn test_update_fulfill_htlc_bolt2_update_fail_malformed_htlc_before_commitment() {
6948 //BOLT 2 Requirement: until the corresponding HTLC is irrevocably committed in both sides' commitment transactions: MUST NOT send an update_fulfill_htlc, update_fail_htlc, or update_fail_malformed_htlc.
6950 let chanmon_cfgs = create_chanmon_cfgs(2);
6951 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6952 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6953 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6954 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6955 let logger = test_utils::TestLogger::new();
6957 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6958 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6959 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6960 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6961 check_added_monitors!(nodes[0], 1);
6962 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6963 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6964 let update_msg = msgs::UpdateFailMalformedHTLC{
6967 sha256_of_onion: [1; 32],
6968 failure_code: 0x8000,
6971 nodes[0].node.handle_update_fail_malformed_htlc(&nodes[1].node.get_our_node_id(), &update_msg);
6973 assert!(nodes[0].node.list_channels().is_empty());
6974 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6975 assert!(regex::Regex::new(r"Remote tried to fulfill/fail HTLC \(\d+\) before it had been committed").unwrap().is_match(err_msg.data.as_str()));
6976 check_added_monitors!(nodes[0], 1);
6980 fn test_update_fulfill_htlc_bolt2_incorrect_htlc_id() {
6981 //BOLT 2 Requirement: A receiving node: if the id does not correspond to an HTLC in its current commitment transaction MUST fail the channel.
6983 let chanmon_cfgs = create_chanmon_cfgs(2);
6984 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6985 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6986 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6987 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6989 let our_payment_preimage = route_payment(&nodes[0], &[&nodes[1]], 100000).0;
6991 nodes[1].node.claim_funds(our_payment_preimage);
6992 check_added_monitors!(nodes[1], 1);
6994 let events = nodes[1].node.get_and_clear_pending_msg_events();
6995 assert_eq!(events.len(), 1);
6996 let mut update_fulfill_msg: msgs::UpdateFulfillHTLC = {
6998 MessageSendEvent::UpdateHTLCs { node_id: _ , updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, .. } } => {
6999 assert!(update_add_htlcs.is_empty());
7000 assert_eq!(update_fulfill_htlcs.len(), 1);
7001 assert!(update_fail_htlcs.is_empty());
7002 assert!(update_fail_malformed_htlcs.is_empty());
7003 assert!(update_fee.is_none());
7004 update_fulfill_htlcs[0].clone()
7006 _ => panic!("Unexpected event"),
7010 update_fulfill_msg.htlc_id = 1;
7012 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_msg);
7014 assert!(nodes[0].node.list_channels().is_empty());
7015 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
7016 assert_eq!(err_msg.data, "Remote tried to fulfill/fail an HTLC we couldn't find");
7017 check_added_monitors!(nodes[0], 1);
7021 fn test_update_fulfill_htlc_bolt2_wrong_preimage() {
7022 //BOLT 2 Requirement: A receiving node: if the payment_preimage value in update_fulfill_htlc doesn't SHA256 hash to the corresponding HTLC payment_hash MUST fail the channel.
7024 let chanmon_cfgs = create_chanmon_cfgs(2);
7025 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7026 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7027 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7028 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
7030 let our_payment_preimage = route_payment(&nodes[0], &[&nodes[1]], 100000).0;
7032 nodes[1].node.claim_funds(our_payment_preimage);
7033 check_added_monitors!(nodes[1], 1);
7035 let events = nodes[1].node.get_and_clear_pending_msg_events();
7036 assert_eq!(events.len(), 1);
7037 let mut update_fulfill_msg: msgs::UpdateFulfillHTLC = {
7039 MessageSendEvent::UpdateHTLCs { node_id: _ , updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, .. } } => {
7040 assert!(update_add_htlcs.is_empty());
7041 assert_eq!(update_fulfill_htlcs.len(), 1);
7042 assert!(update_fail_htlcs.is_empty());
7043 assert!(update_fail_malformed_htlcs.is_empty());
7044 assert!(update_fee.is_none());
7045 update_fulfill_htlcs[0].clone()
7047 _ => panic!("Unexpected event"),
7051 update_fulfill_msg.payment_preimage = PaymentPreimage([1; 32]);
7053 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_msg);
7055 assert!(nodes[0].node.list_channels().is_empty());
7056 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
7057 assert!(regex::Regex::new(r"Remote tried to fulfill HTLC \(\d+\) with an incorrect preimage").unwrap().is_match(err_msg.data.as_str()));
7058 check_added_monitors!(nodes[0], 1);
7062 fn test_update_fulfill_htlc_bolt2_missing_badonion_bit_for_malformed_htlc_message() {
7063 //BOLT 2 Requirement: A receiving node: if the BADONION bit in failure_code is not set for update_fail_malformed_htlc MUST fail the channel.
7065 let chanmon_cfgs = create_chanmon_cfgs(2);
7066 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7067 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7068 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7069 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
7070 let logger = test_utils::TestLogger::new();
7072 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
7073 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
7074 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
7075 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
7076 check_added_monitors!(nodes[0], 1);
7078 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
7079 updates.update_add_htlcs[0].onion_routing_packet.version = 1; //Produce a malformed HTLC message
7081 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
7082 check_added_monitors!(nodes[1], 0);
7083 commitment_signed_dance!(nodes[1], nodes[0], updates.commitment_signed, false, true);
7085 let events = nodes[1].node.get_and_clear_pending_msg_events();
7087 let mut update_msg: msgs::UpdateFailMalformedHTLC = {
7089 MessageSendEvent::UpdateHTLCs { node_id: _ , updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, .. } } => {
7090 assert!(update_add_htlcs.is_empty());
7091 assert!(update_fulfill_htlcs.is_empty());
7092 assert!(update_fail_htlcs.is_empty());
7093 assert_eq!(update_fail_malformed_htlcs.len(), 1);
7094 assert!(update_fee.is_none());
7095 update_fail_malformed_htlcs[0].clone()
7097 _ => panic!("Unexpected event"),
7100 update_msg.failure_code &= !0x8000;
7101 nodes[0].node.handle_update_fail_malformed_htlc(&nodes[1].node.get_our_node_id(), &update_msg);
7103 assert!(nodes[0].node.list_channels().is_empty());
7104 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
7105 assert_eq!(err_msg.data, "Got update_fail_malformed_htlc with BADONION not set");
7106 check_added_monitors!(nodes[0], 1);
7110 fn test_update_fulfill_htlc_bolt2_after_malformed_htlc_message_must_forward_update_fail_htlc() {
7111 //BOLT 2 Requirement: a receiving node which has an outgoing HTLC canceled by update_fail_malformed_htlc:
7112 // * MUST return an error in the update_fail_htlc sent to the link which originally sent the HTLC, using the failure_code given and setting the data to sha256_of_onion.
7114 let chanmon_cfgs = create_chanmon_cfgs(3);
7115 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
7116 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
7117 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
7118 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
7119 create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
7120 let logger = test_utils::TestLogger::new();
7122 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[2]);
7125 let mut payment_event = {
7126 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
7127 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
7128 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
7129 check_added_monitors!(nodes[0], 1);
7130 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
7131 assert_eq!(events.len(), 1);
7132 SendEvent::from_event(events.remove(0))
7134 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
7135 check_added_monitors!(nodes[1], 0);
7136 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
7137 expect_pending_htlcs_forwardable!(nodes[1]);
7138 let mut events_2 = nodes[1].node.get_and_clear_pending_msg_events();
7139 assert_eq!(events_2.len(), 1);
7140 check_added_monitors!(nodes[1], 1);
7141 payment_event = SendEvent::from_event(events_2.remove(0));
7142 assert_eq!(payment_event.msgs.len(), 1);
7145 payment_event.msgs[0].onion_routing_packet.version = 1; //Produce a malformed HTLC message
7146 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]);
7147 check_added_monitors!(nodes[2], 0);
7148 commitment_signed_dance!(nodes[2], nodes[1], payment_event.commitment_msg, false, true);
7150 let events_3 = nodes[2].node.get_and_clear_pending_msg_events();
7151 assert_eq!(events_3.len(), 1);
7152 let update_msg : (msgs::UpdateFailMalformedHTLC, msgs::CommitmentSigned) = {
7154 MessageSendEvent::UpdateHTLCs { node_id: _ , updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => {
7155 assert!(update_add_htlcs.is_empty());
7156 assert!(update_fulfill_htlcs.is_empty());
7157 assert!(update_fail_htlcs.is_empty());
7158 assert_eq!(update_fail_malformed_htlcs.len(), 1);
7159 assert!(update_fee.is_none());
7160 (update_fail_malformed_htlcs[0].clone(), commitment_signed.clone())
7162 _ => panic!("Unexpected event"),
7166 nodes[1].node.handle_update_fail_malformed_htlc(&nodes[2].node.get_our_node_id(), &update_msg.0);
7168 check_added_monitors!(nodes[1], 0);
7169 commitment_signed_dance!(nodes[1], nodes[2], update_msg.1, false, true);
7170 expect_pending_htlcs_forwardable!(nodes[1]);
7171 let events_4 = nodes[1].node.get_and_clear_pending_msg_events();
7172 assert_eq!(events_4.len(), 1);
7174 //Confirm that handlinge the update_malformed_htlc message produces an update_fail_htlc message to be forwarded back along the route
7176 MessageSendEvent::UpdateHTLCs { node_id: _ , updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, .. } } => {
7177 assert!(update_add_htlcs.is_empty());
7178 assert!(update_fulfill_htlcs.is_empty());
7179 assert_eq!(update_fail_htlcs.len(), 1);
7180 assert!(update_fail_malformed_htlcs.is_empty());
7181 assert!(update_fee.is_none());
7183 _ => panic!("Unexpected event"),
7186 check_added_monitors!(nodes[1], 1);
7189 fn do_test_failure_delay_dust_htlc_local_commitment(announce_latest: bool) {
7190 // Dust-HTLC failure updates must be delayed until failure-trigger tx (in this case local commitment) reach ANTI_REORG_DELAY
7191 // We can have at most two valid local commitment tx, so both cases must be covered, and both txs must be checked to get them all as
7192 // HTLC could have been removed from lastest local commitment tx but still valid until we get remote RAA
7194 let mut chanmon_cfgs = create_chanmon_cfgs(2);
7195 chanmon_cfgs[0].keys_manager.disable_revocation_policy_check = true;
7196 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7197 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7198 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7199 let chan =create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
7201 let bs_dust_limit = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().holder_dust_limit_satoshis;
7203 // We route 2 dust-HTLCs between A and B
7204 let (_, payment_hash_1, _) = route_payment(&nodes[0], &[&nodes[1]], bs_dust_limit*1000);
7205 let (_, payment_hash_2, _) = route_payment(&nodes[0], &[&nodes[1]], bs_dust_limit*1000);
7206 route_payment(&nodes[0], &[&nodes[1]], 1000000);
7208 // Cache one local commitment tx as previous
7209 let as_prev_commitment_tx = get_local_commitment_txn!(nodes[0], chan.2);
7211 // Fail one HTLC to prune it in the will-be-latest-local commitment tx
7212 assert!(nodes[1].node.fail_htlc_backwards(&payment_hash_2));
7213 check_added_monitors!(nodes[1], 0);
7214 expect_pending_htlcs_forwardable!(nodes[1]);
7215 check_added_monitors!(nodes[1], 1);
7217 let remove = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
7218 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &remove.update_fail_htlcs[0]);
7219 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &remove.commitment_signed);
7220 check_added_monitors!(nodes[0], 1);
7222 // Cache one local commitment tx as lastest
7223 let as_last_commitment_tx = get_local_commitment_txn!(nodes[0], chan.2);
7225 let events = nodes[0].node.get_and_clear_pending_msg_events();
7227 MessageSendEvent::SendRevokeAndACK { node_id, .. } => {
7228 assert_eq!(node_id, nodes[1].node.get_our_node_id());
7230 _ => panic!("Unexpected event"),
7233 MessageSendEvent::UpdateHTLCs { node_id, .. } => {
7234 assert_eq!(node_id, nodes[1].node.get_our_node_id());
7236 _ => panic!("Unexpected event"),
7239 assert_ne!(as_prev_commitment_tx, as_last_commitment_tx);
7240 // Fail the 2 dust-HTLCs, move their failure in maturation buffer (htlc_updated_waiting_threshold_conf)
7241 if announce_latest {
7242 mine_transaction(&nodes[0], &as_last_commitment_tx[0]);
7244 mine_transaction(&nodes[0], &as_prev_commitment_tx[0]);
7247 check_closed_broadcast!(nodes[0], true);
7248 check_added_monitors!(nodes[0], 1);
7250 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7251 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
7252 let events = nodes[0].node.get_and_clear_pending_events();
7253 // Only 2 PaymentFailed events should show up, over-dust HTLC has to be failed by timeout tx
7254 assert_eq!(events.len(), 2);
7255 let mut first_failed = false;
7256 for event in events {
7258 Event::PaymentFailed { payment_hash, .. } => {
7259 if payment_hash == payment_hash_1 {
7260 assert!(!first_failed);
7261 first_failed = true;
7263 assert_eq!(payment_hash, payment_hash_2);
7266 _ => panic!("Unexpected event"),
7272 fn test_failure_delay_dust_htlc_local_commitment() {
7273 do_test_failure_delay_dust_htlc_local_commitment(true);
7274 do_test_failure_delay_dust_htlc_local_commitment(false);
7277 fn do_test_sweep_outbound_htlc_failure_update(revoked: bool, local: bool) {
7278 // Outbound HTLC-failure updates must be cancelled if we get a reorg before we reach ANTI_REORG_DELAY.
7279 // Broadcast of revoked remote commitment tx, trigger failure-update of dust/non-dust HTLCs
7280 // Broadcast of remote commitment tx, trigger failure-update of dust-HTLCs
7281 // Broadcast of timeout tx on remote commitment tx, trigger failure-udate of non-dust HTLCs
7282 // Broadcast of local commitment tx, trigger failure-update of dust-HTLCs
7283 // Broadcast of HTLC-timeout tx on local commitment tx, trigger failure-update of non-dust HTLCs
7285 let chanmon_cfgs = create_chanmon_cfgs(3);
7286 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
7287 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
7288 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
7289 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
7291 let bs_dust_limit = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().holder_dust_limit_satoshis;
7293 let (_payment_preimage_1, dust_hash, _payment_secret_1) = route_payment(&nodes[0], &[&nodes[1]], bs_dust_limit*1000);
7294 let (_payment_preimage_2, non_dust_hash, _payment_secret_2) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
7296 let as_commitment_tx = get_local_commitment_txn!(nodes[0], chan.2);
7297 let bs_commitment_tx = get_local_commitment_txn!(nodes[1], chan.2);
7299 // We revoked bs_commitment_tx
7301 let (payment_preimage_3, _, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
7302 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_3);
7305 let mut timeout_tx = Vec::new();
7307 // We fail dust-HTLC 1 by broadcast of local commitment tx
7308 mine_transaction(&nodes[0], &as_commitment_tx[0]);
7309 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
7310 expect_payment_failed!(nodes[0], dust_hash, true);
7312 connect_blocks(&nodes[0], TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS - ANTI_REORG_DELAY);
7313 check_closed_broadcast!(nodes[0], true);
7314 check_added_monitors!(nodes[0], 1);
7315 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7316 timeout_tx.push(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap()[1].clone());
7317 assert_eq!(timeout_tx[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
7318 // We fail non-dust-HTLC 2 by broadcast of local HTLC-timeout tx on local commitment tx
7319 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7320 mine_transaction(&nodes[0], &timeout_tx[0]);
7321 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
7322 expect_payment_failed!(nodes[0], non_dust_hash, true);
7324 // We fail dust-HTLC 1 by broadcast of remote commitment tx. If revoked, fail also non-dust HTLC
7325 mine_transaction(&nodes[0], &bs_commitment_tx[0]);
7326 check_closed_broadcast!(nodes[0], true);
7327 check_added_monitors!(nodes[0], 1);
7328 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7329 connect_blocks(&nodes[0], TEST_FINAL_CLTV - 1); // Confirm blocks until the HTLC expires
7330 timeout_tx.push(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap()[1].clone());
7332 expect_payment_failed!(nodes[0], dust_hash, true);
7333 assert_eq!(timeout_tx[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
7334 // We fail non-dust-HTLC 2 by broadcast of local timeout tx on remote commitment tx
7335 mine_transaction(&nodes[0], &timeout_tx[0]);
7336 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7337 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
7338 expect_payment_failed!(nodes[0], non_dust_hash, true);
7340 // If revoked, both dust & non-dust HTLCs should have been failed after ANTI_REORG_DELAY confs of revoked
7342 let events = nodes[0].node.get_and_clear_pending_events();
7343 assert_eq!(events.len(), 2);
7346 Event::PaymentFailed { payment_hash, .. } => {
7347 if payment_hash == dust_hash { first = true; }
7348 else { first = false; }
7350 _ => panic!("Unexpected event"),
7353 Event::PaymentFailed { payment_hash, .. } => {
7354 if first { assert_eq!(payment_hash, non_dust_hash); }
7355 else { assert_eq!(payment_hash, dust_hash); }
7357 _ => panic!("Unexpected event"),
7364 fn test_sweep_outbound_htlc_failure_update() {
7365 do_test_sweep_outbound_htlc_failure_update(false, true);
7366 do_test_sweep_outbound_htlc_failure_update(false, false);
7367 do_test_sweep_outbound_htlc_failure_update(true, false);
7371 fn test_upfront_shutdown_script() {
7372 // BOLT 2 : Option upfront shutdown script, if peer commit its closing_script at channel opening
7373 // enforce it at shutdown message
7375 let mut config = UserConfig::default();
7376 config.channel_options.announced_channel = true;
7377 config.peer_channel_config_limits.force_announced_channel_preference = false;
7378 config.channel_options.commit_upfront_shutdown_pubkey = false;
7379 let user_cfgs = [None, Some(config), None];
7380 let chanmon_cfgs = create_chanmon_cfgs(3);
7381 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
7382 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs);
7383 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
7385 // We test that in case of peer committing upfront to a script, if it changes at closing, we refuse to sign
7386 let flags = InitFeatures::known();
7387 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 1000000, 1000000, flags.clone(), flags.clone());
7388 nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7389 let mut node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[2].node.get_our_node_id());
7390 node_0_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
7391 // Test we enforce upfront_scriptpbukey if by providing a diffrent one at closing that we disconnect peer
7392 nodes[2].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
7393 assert!(regex::Regex::new(r"Got shutdown request with a scriptpubkey \([A-Fa-f0-9]+\) which did not match their previous scriptpubkey.").unwrap().is_match(check_closed_broadcast!(nodes[2], true).unwrap().data.as_str()));
7394 check_added_monitors!(nodes[2], 1);
7396 // We test that in case of peer committing upfront to a script, if it doesn't change at closing, we sign
7397 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 1000000, 1000000, flags.clone(), flags.clone());
7398 nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7399 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[2].node.get_our_node_id());
7400 // We test that in case of peer committing upfront to a script, if it oesn't change at closing, we sign
7401 nodes[2].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
7402 let events = nodes[2].node.get_and_clear_pending_msg_events();
7403 assert_eq!(events.len(), 1);
7405 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[0].node.get_our_node_id()) }
7406 _ => panic!("Unexpected event"),
7409 // We test that if case of peer non-signaling we don't enforce committed script at channel opening
7410 let flags_no = InitFeatures::known().clear_upfront_shutdown_script();
7411 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, flags_no, flags.clone());
7412 nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7413 let mut node_1_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
7414 node_1_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
7415 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown);
7416 let events = nodes[1].node.get_and_clear_pending_msg_events();
7417 assert_eq!(events.len(), 1);
7419 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[0].node.get_our_node_id()) }
7420 _ => panic!("Unexpected event"),
7423 // We test that if user opt-out, we provide a zero-length script at channel opening and we are able to close
7424 // channel smoothly, opt-out is from channel initiator here
7425 let chan = create_announced_chan_between_nodes_with_value(&nodes, 1, 0, 1000000, 1000000, flags.clone(), flags.clone());
7426 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7427 let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
7428 node_0_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
7429 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
7430 let events = nodes[0].node.get_and_clear_pending_msg_events();
7431 assert_eq!(events.len(), 1);
7433 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
7434 _ => panic!("Unexpected event"),
7437 //// We test that if user opt-out, we provide a zero-length script at channel opening and we are able to close
7438 //// channel smoothly
7439 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, flags.clone(), flags.clone());
7440 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7441 let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
7442 node_0_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
7443 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
7444 let events = nodes[0].node.get_and_clear_pending_msg_events();
7445 assert_eq!(events.len(), 2);
7447 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
7448 _ => panic!("Unexpected event"),
7451 MessageSendEvent::SendClosingSigned { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
7452 _ => panic!("Unexpected event"),
7457 fn test_upfront_shutdown_script_unsupport_segwit() {
7458 // We test that channel is closed early
7459 // if a segwit program is passed as upfront shutdown script,
7460 // but the peer does not support segwit.
7461 let chanmon_cfgs = create_chanmon_cfgs(2);
7462 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7463 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7464 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7466 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
7468 let mut open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
7469 open_channel.shutdown_scriptpubkey = Present(Builder::new().push_int(16)
7470 .push_slice(&[0, 0])
7473 let features = InitFeatures::known().clear_shutdown_anysegwit();
7474 nodes[0].node.handle_open_channel(&nodes[0].node.get_our_node_id(), features, &open_channel);
7476 let events = nodes[0].node.get_and_clear_pending_msg_events();
7477 assert_eq!(events.len(), 1);
7479 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
7480 assert_eq!(node_id, nodes[0].node.get_our_node_id());
7481 assert!(regex::Regex::new(r"Peer is signaling upfront_shutdown but has provided a non-accepted scriptpubkey format. script: (\([A-Fa-f0-9]+\))").unwrap().is_match(&*msg.data));
7483 _ => panic!("Unexpected event"),
7488 fn test_shutdown_script_any_segwit_allowed() {
7489 let mut config = UserConfig::default();
7490 config.channel_options.announced_channel = true;
7491 config.peer_channel_config_limits.force_announced_channel_preference = false;
7492 config.channel_options.commit_upfront_shutdown_pubkey = false;
7493 let user_cfgs = [None, Some(config), None];
7494 let chanmon_cfgs = create_chanmon_cfgs(3);
7495 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
7496 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs);
7497 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
7499 //// We test if the remote peer accepts opt_shutdown_anysegwit, a witness program can be used on shutdown
7500 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
7501 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7502 let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
7503 node_0_shutdown.scriptpubkey = Builder::new().push_int(16)
7504 .push_slice(&[0, 0])
7506 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
7507 let events = nodes[0].node.get_and_clear_pending_msg_events();
7508 assert_eq!(events.len(), 2);
7510 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
7511 _ => panic!("Unexpected event"),
7514 MessageSendEvent::SendClosingSigned { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
7515 _ => panic!("Unexpected event"),
7520 fn test_shutdown_script_any_segwit_not_allowed() {
7521 let mut config = UserConfig::default();
7522 config.channel_options.announced_channel = true;
7523 config.peer_channel_config_limits.force_announced_channel_preference = false;
7524 config.channel_options.commit_upfront_shutdown_pubkey = false;
7525 let user_cfgs = [None, Some(config), None];
7526 let chanmon_cfgs = create_chanmon_cfgs(3);
7527 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
7528 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs);
7529 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
7531 //// We test that if the remote peer does not accept opt_shutdown_anysegwit, the witness program cannot be used on shutdown
7532 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
7533 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7534 let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
7535 // Make an any segwit version script
7536 node_0_shutdown.scriptpubkey = Builder::new().push_int(16)
7537 .push_slice(&[0, 0])
7539 let flags_no = InitFeatures::known().clear_shutdown_anysegwit();
7540 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &flags_no, &node_0_shutdown);
7541 let events = nodes[0].node.get_and_clear_pending_msg_events();
7542 assert_eq!(events.len(), 2);
7544 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
7545 assert_eq!(node_id, nodes[1].node.get_our_node_id());
7546 assert_eq!(msg.data, "Got a nonstandard scriptpubkey (60020000) from remote peer".to_owned())
7548 _ => panic!("Unexpected event"),
7550 check_added_monitors!(nodes[0], 1);
7554 fn test_shutdown_script_segwit_but_not_anysegwit() {
7555 let mut config = UserConfig::default();
7556 config.channel_options.announced_channel = true;
7557 config.peer_channel_config_limits.force_announced_channel_preference = false;
7558 config.channel_options.commit_upfront_shutdown_pubkey = false;
7559 let user_cfgs = [None, Some(config), None];
7560 let chanmon_cfgs = create_chanmon_cfgs(3);
7561 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
7562 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs);
7563 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
7565 //// We test that if shutdown any segwit is supported and we send a witness script with 0 version, this is not accepted
7566 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
7567 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7568 let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
7569 // Make a segwit script that is not a valid as any segwit
7570 node_0_shutdown.scriptpubkey = Builder::new().push_int(0)
7571 .push_slice(&[0, 0])
7573 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
7574 let events = nodes[0].node.get_and_clear_pending_msg_events();
7575 assert_eq!(events.len(), 2);
7577 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
7578 assert_eq!(node_id, nodes[1].node.get_our_node_id());
7579 assert_eq!(msg.data, "Got a nonstandard scriptpubkey (00020000) from remote peer".to_owned())
7581 _ => panic!("Unexpected event"),
7583 check_added_monitors!(nodes[0], 1);
7587 fn test_user_configurable_csv_delay() {
7588 // We test our channel constructors yield errors when we pass them absurd csv delay
7590 let mut low_our_to_self_config = UserConfig::default();
7591 low_our_to_self_config.own_channel_config.our_to_self_delay = 6;
7592 let mut high_their_to_self_config = UserConfig::default();
7593 high_their_to_self_config.peer_channel_config_limits.their_to_self_delay = 100;
7594 let user_cfgs = [Some(high_their_to_self_config.clone()), None];
7595 let chanmon_cfgs = create_chanmon_cfgs(2);
7596 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7597 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &user_cfgs);
7598 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7600 // We test config.our_to_self > BREAKDOWN_TIMEOUT is enforced in Channel::new_outbound()
7601 if let Err(error) = Channel::new_outbound(&&test_utils::TestFeeEstimator { sat_per_kw: 253 }, &nodes[0].keys_manager, nodes[1].node.get_our_node_id(), 1000000, 1000000, 0, &low_our_to_self_config) {
7603 APIError::APIMisuseError { err } => { assert!(regex::Regex::new(r"Configured with an unreasonable our_to_self_delay \(\d+\) putting user funds at risks").unwrap().is_match(err.as_str())); },
7604 _ => panic!("Unexpected event"),
7606 } else { assert!(false) }
7608 // We test config.our_to_self > BREAKDOWN_TIMEOUT is enforced in Channel::new_from_req()
7609 nodes[1].node.create_channel(nodes[0].node.get_our_node_id(), 1000000, 1000000, 42, None).unwrap();
7610 let mut open_channel = get_event_msg!(nodes[1], MessageSendEvent::SendOpenChannel, nodes[0].node.get_our_node_id());
7611 open_channel.to_self_delay = 200;
7612 if let Err(error) = Channel::new_from_req(&&test_utils::TestFeeEstimator { sat_per_kw: 253 }, &nodes[0].keys_manager, nodes[1].node.get_our_node_id(), InitFeatures::known(), &open_channel, 0, &low_our_to_self_config) {
7614 ChannelError::Close(err) => { assert!(regex::Regex::new(r"Configured with an unreasonable our_to_self_delay \(\d+\) putting user funds at risks").unwrap().is_match(err.as_str())); },
7615 _ => panic!("Unexpected event"),
7617 } else { assert!(false); }
7619 // We test msg.to_self_delay <= config.their_to_self_delay is enforced in Chanel::accept_channel()
7620 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 1000000, 1000000, 42, None).unwrap();
7621 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id()));
7622 let mut accept_channel = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
7623 accept_channel.to_self_delay = 200;
7624 nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &accept_channel);
7625 if let MessageSendEvent::HandleError { ref action, .. } = nodes[0].node.get_and_clear_pending_msg_events()[0] {
7627 &ErrorAction::SendErrorMessage { ref msg } => {
7628 assert!(regex::Regex::new(r"They wanted our payments to be delayed by a needlessly long period\. Upper limit: \d+\. Actual: \d+").unwrap().is_match(msg.data.as_str()));
7630 _ => { assert!(false); }
7632 } else { assert!(false); }
7634 // We test msg.to_self_delay <= config.their_to_self_delay is enforced in Channel::new_from_req()
7635 nodes[1].node.create_channel(nodes[0].node.get_our_node_id(), 1000000, 1000000, 42, None).unwrap();
7636 let mut open_channel = get_event_msg!(nodes[1], MessageSendEvent::SendOpenChannel, nodes[0].node.get_our_node_id());
7637 open_channel.to_self_delay = 200;
7638 if let Err(error) = Channel::new_from_req(&&test_utils::TestFeeEstimator { sat_per_kw: 253 }, &nodes[0].keys_manager, nodes[1].node.get_our_node_id(), InitFeatures::known(), &open_channel, 0, &high_their_to_self_config) {
7640 ChannelError::Close(err) => { assert!(regex::Regex::new(r"They wanted our payments to be delayed by a needlessly long period\. Upper limit: \d+\. Actual: \d+").unwrap().is_match(err.as_str())); },
7641 _ => panic!("Unexpected event"),
7643 } else { assert!(false); }
7647 fn test_data_loss_protect() {
7648 // We want to be sure that :
7649 // * we don't broadcast our Local Commitment Tx in case of fallen behind
7650 // (but this is not quite true - we broadcast during Drop because chanmon is out of sync with chanmgr)
7651 // * we close channel in case of detecting other being fallen behind
7652 // * we are able to claim our own outputs thanks to to_remote being static
7653 // TODO: this test is incomplete and the data_loss_protect implementation is incomplete - see issue #775
7659 let mut chanmon_cfgs = create_chanmon_cfgs(2);
7660 // We broadcast during Drop because chanmon is out of sync with chanmgr, which would cause a panic
7661 // during signing due to revoked tx
7662 chanmon_cfgs[0].keys_manager.disable_revocation_policy_check = true;
7663 let keys_manager = &chanmon_cfgs[0].keys_manager;
7666 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7667 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7668 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7670 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
7672 // Cache node A state before any channel update
7673 let previous_node_state = nodes[0].node.encode();
7674 let mut previous_chain_monitor_state = test_utils::TestVecWriter(Vec::new());
7675 nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter().next().unwrap().1.write(&mut previous_chain_monitor_state).unwrap();
7677 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
7678 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
7680 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
7681 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
7683 // Restore node A from previous state
7684 logger = test_utils::TestLogger::with_id(format!("node {}", 0));
7685 let mut chain_monitor = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(&mut ::std::io::Cursor::new(previous_chain_monitor_state.0), keys_manager).unwrap().1;
7686 chain_source = test_utils::TestChainSource::new(Network::Testnet);
7687 tx_broadcaster = test_utils::TestBroadcaster{txn_broadcasted: Mutex::new(Vec::new()), blocks: Arc::new(Mutex::new(Vec::new()))};
7688 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
7689 persister = test_utils::TestPersister::new();
7690 monitor = test_utils::TestChainMonitor::new(Some(&chain_source), &tx_broadcaster, &logger, &fee_estimator, &persister, keys_manager);
7692 let mut channel_monitors = HashMap::new();
7693 channel_monitors.insert(OutPoint { txid: chan.3.txid(), index: 0 }, &mut chain_monitor);
7694 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut ::std::io::Cursor::new(previous_node_state), ChannelManagerReadArgs {
7695 keys_manager: keys_manager,
7696 fee_estimator: &fee_estimator,
7697 chain_monitor: &monitor,
7699 tx_broadcaster: &tx_broadcaster,
7700 default_config: UserConfig::default(),
7704 nodes[0].node = &node_state_0;
7705 assert!(monitor.watch_channel(OutPoint { txid: chan.3.txid(), index: 0 }, chain_monitor).is_ok());
7706 nodes[0].chain_monitor = &monitor;
7707 nodes[0].chain_source = &chain_source;
7709 check_added_monitors!(nodes[0], 1);
7711 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
7712 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
7714 let reestablish_0 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
7716 // Check we don't broadcast any transactions following learning of per_commitment_point from B
7717 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_0[0]);
7718 check_added_monitors!(nodes[0], 1);
7721 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
7722 assert_eq!(node_txn.len(), 0);
7725 let mut reestablish_1 = Vec::with_capacity(1);
7726 for msg in nodes[0].node.get_and_clear_pending_msg_events() {
7727 if let MessageSendEvent::SendChannelReestablish { ref node_id, ref msg } = msg {
7728 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
7729 reestablish_1.push(msg.clone());
7730 } else if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg {
7731 } else if let MessageSendEvent::HandleError { ref action, .. } = msg {
7733 &ErrorAction::SendErrorMessage { ref msg } => {
7734 assert_eq!(msg.data, "We have fallen behind - we have received proof that if we broadcast remote is going to claim our funds - we can't do any automated broadcasting");
7736 _ => panic!("Unexpected event!"),
7739 panic!("Unexpected event")
7743 // Check we close channel detecting A is fallen-behind
7744 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
7745 assert_eq!(check_closed_broadcast!(nodes[1], true).unwrap().data, "Peer attempted to reestablish channel with a very old local commitment transaction");
7746 check_added_monitors!(nodes[1], 1);
7749 // Check A is able to claim to_remote output
7750 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
7751 assert_eq!(node_txn.len(), 1);
7752 check_spends!(node_txn[0], chan.3);
7753 assert_eq!(node_txn[0].output.len(), 2);
7754 mine_transaction(&nodes[0], &node_txn[0]);
7755 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
7756 let spend_txn = check_spendable_outputs!(nodes[0], 1, node_cfgs[0].keys_manager, 1000000);
7757 assert_eq!(spend_txn.len(), 1);
7758 check_spends!(spend_txn[0], node_txn[0]);
7762 fn test_check_htlc_underpaying() {
7763 // Send payment through A -> B but A is maliciously
7764 // sending a probe payment (i.e less than expected value0
7765 // to B, B should refuse payment.
7767 let chanmon_cfgs = create_chanmon_cfgs(2);
7768 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7769 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7770 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7772 // Create some initial channels
7773 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
7775 let route = get_route(&nodes[0].node.get_our_node_id(), &nodes[0].net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 10_000, TEST_FINAL_CLTV, nodes[0].logger).unwrap();
7776 let (_, our_payment_hash, _) = get_payment_preimage_hash!(nodes[0]);
7777 let our_payment_secret = nodes[1].node.create_inbound_payment_for_hash(our_payment_hash, Some(100_000), 7200, 0).unwrap();
7778 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
7779 check_added_monitors!(nodes[0], 1);
7781 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
7782 assert_eq!(events.len(), 1);
7783 let mut payment_event = SendEvent::from_event(events.pop().unwrap());
7784 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
7785 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
7787 // Note that we first have to wait a random delay before processing the receipt of the HTLC,
7788 // and then will wait a second random delay before failing the HTLC back:
7789 expect_pending_htlcs_forwardable!(nodes[1]);
7790 expect_pending_htlcs_forwardable!(nodes[1]);
7792 // Node 3 is expecting payment of 100_000 but received 10_000,
7793 // it should fail htlc like we didn't know the preimage.
7794 nodes[1].node.process_pending_htlc_forwards();
7796 let events = nodes[1].node.get_and_clear_pending_msg_events();
7797 assert_eq!(events.len(), 1);
7798 let (update_fail_htlc, commitment_signed) = match events[0] {
7799 MessageSendEvent::UpdateHTLCs { node_id: _ , updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => {
7800 assert!(update_add_htlcs.is_empty());
7801 assert!(update_fulfill_htlcs.is_empty());
7802 assert_eq!(update_fail_htlcs.len(), 1);
7803 assert!(update_fail_malformed_htlcs.is_empty());
7804 assert!(update_fee.is_none());
7805 (update_fail_htlcs[0].clone(), commitment_signed)
7807 _ => panic!("Unexpected event"),
7809 check_added_monitors!(nodes[1], 1);
7811 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlc);
7812 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false, true);
7814 // 10_000 msat as u64, followed by a height of CHAN_CONFIRM_DEPTH as u32
7815 let mut expected_failure_data = byte_utils::be64_to_array(10_000).to_vec();
7816 expected_failure_data.extend_from_slice(&byte_utils::be32_to_array(CHAN_CONFIRM_DEPTH));
7817 expect_payment_failed!(nodes[0], our_payment_hash, true, 0x4000|15, &expected_failure_data[..]);
7821 fn test_announce_disable_channels() {
7822 // Create 2 channels between A and B. Disconnect B. Call timer_tick_occurred and check for generated
7823 // ChannelUpdate. Reconnect B, reestablish and check there is non-generated ChannelUpdate.
7825 let chanmon_cfgs = create_chanmon_cfgs(2);
7826 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7827 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7828 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7830 let short_id_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
7831 let short_id_2 = create_announced_chan_between_nodes(&nodes, 1, 0, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
7832 let short_id_3 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
7835 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
7836 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
7838 nodes[0].node.timer_tick_occurred(); // Enabled -> DisabledStaged
7839 nodes[0].node.timer_tick_occurred(); // DisabledStaged -> Disabled
7840 let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
7841 assert_eq!(msg_events.len(), 3);
7842 let mut chans_disabled: HashSet<u64> = [short_id_1, short_id_2, short_id_3].iter().map(|a| *a).collect();
7843 for e in msg_events {
7845 MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
7846 assert_eq!(msg.contents.flags & (1<<1), 1<<1); // The "channel disabled" bit should be set
7847 // Check that each channel gets updated exactly once
7848 if !chans_disabled.remove(&msg.contents.short_channel_id) {
7849 panic!("Generated ChannelUpdate for wrong chan!");
7852 _ => panic!("Unexpected event"),
7856 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
7857 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
7858 assert_eq!(reestablish_1.len(), 3);
7859 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
7860 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
7861 assert_eq!(reestablish_2.len(), 3);
7863 // Reestablish chan_1
7864 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
7865 handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
7866 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
7867 handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
7868 // Reestablish chan_2
7869 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[1]);
7870 handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
7871 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[1]);
7872 handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
7873 // Reestablish chan_3
7874 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[2]);
7875 handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
7876 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[2]);
7877 handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
7879 nodes[0].node.timer_tick_occurred();
7880 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
7881 nodes[0].node.timer_tick_occurred();
7882 let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
7883 assert_eq!(msg_events.len(), 3);
7884 chans_disabled = [short_id_1, short_id_2, short_id_3].iter().map(|a| *a).collect();
7885 for e in msg_events {
7887 MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
7888 assert_eq!(msg.contents.flags & (1<<1), 0); // The "channel disabled" bit should be off
7889 // Check that each channel gets updated exactly once
7890 if !chans_disabled.remove(&msg.contents.short_channel_id) {
7891 panic!("Generated ChannelUpdate for wrong chan!");
7894 _ => panic!("Unexpected event"),
7900 fn test_bump_penalty_txn_on_revoked_commitment() {
7901 // In case of penalty txn with too low feerates for getting into mempools, RBF-bump them to be sure
7902 // we're able to claim outputs on revoked commitment transaction before timelocks expiration
7904 let chanmon_cfgs = create_chanmon_cfgs(2);
7905 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7906 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7907 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7909 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
7910 let logger = test_utils::TestLogger::new();
7912 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
7913 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
7914 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 3000000, 30, &logger).unwrap();
7915 send_along_route(&nodes[1], route, &vec!(&nodes[0])[..], 3000000);
7917 let revoked_txn = get_local_commitment_txn!(nodes[0], chan.2);
7918 // Revoked commitment txn with 4 outputs : to_local, to_remote, 1 outgoing HTLC, 1 incoming HTLC
7919 assert_eq!(revoked_txn[0].output.len(), 4);
7920 assert_eq!(revoked_txn[0].input.len(), 1);
7921 assert_eq!(revoked_txn[0].input[0].previous_output.txid, chan.3.txid());
7922 let revoked_txid = revoked_txn[0].txid();
7924 let mut penalty_sum = 0;
7925 for outp in revoked_txn[0].output.iter() {
7926 if outp.script_pubkey.is_v0_p2wsh() {
7927 penalty_sum += outp.value;
7931 // Connect blocks to change height_timer range to see if we use right soonest_timelock
7932 let header_114 = connect_blocks(&nodes[1], 14);
7934 // Actually revoke tx by claiming a HTLC
7935 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage);
7936 let header = BlockHeader { version: 0x20000000, prev_blockhash: header_114, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7937 connect_block(&nodes[1], &Block { header, txdata: vec![revoked_txn[0].clone()] });
7938 check_added_monitors!(nodes[1], 1);
7940 // One or more justice tx should have been broadcast, check it
7944 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7945 assert_eq!(node_txn.len(), 2); // justice tx (broadcasted from ChannelMonitor) + local commitment tx
7946 assert_eq!(node_txn[0].input.len(), 3); // Penalty txn claims to_local, offered_htlc and received_htlc outputs
7947 assert_eq!(node_txn[0].output.len(), 1);
7948 check_spends!(node_txn[0], revoked_txn[0]);
7949 let fee_1 = penalty_sum - node_txn[0].output[0].value;
7950 feerate_1 = fee_1 * 1000 / node_txn[0].get_weight() as u64;
7951 penalty_1 = node_txn[0].txid();
7955 // After exhaustion of height timer, a new bumped justice tx should have been broadcast, check it
7956 connect_blocks(&nodes[1], 15);
7957 let mut penalty_2 = penalty_1;
7958 let mut feerate_2 = 0;
7960 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7961 assert_eq!(node_txn.len(), 1);
7962 if node_txn[0].input[0].previous_output.txid == revoked_txid {
7963 assert_eq!(node_txn[0].input.len(), 3); // Penalty txn claims to_local, offered_htlc and received_htlc outputs
7964 assert_eq!(node_txn[0].output.len(), 1);
7965 check_spends!(node_txn[0], revoked_txn[0]);
7966 penalty_2 = node_txn[0].txid();
7967 // Verify new bumped tx is different from last claiming transaction, we don't want spurrious rebroadcast
7968 assert_ne!(penalty_2, penalty_1);
7969 let fee_2 = penalty_sum - node_txn[0].output[0].value;
7970 feerate_2 = fee_2 * 1000 / node_txn[0].get_weight() as u64;
7971 // Verify 25% bump heuristic
7972 assert!(feerate_2 * 100 >= feerate_1 * 125);
7976 assert_ne!(feerate_2, 0);
7978 // After exhaustion of height timer for a 2nd time, a new bumped justice tx should have been broadcast, check it
7979 connect_blocks(&nodes[1], 1);
7981 let mut feerate_3 = 0;
7983 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7984 assert_eq!(node_txn.len(), 1);
7985 if node_txn[0].input[0].previous_output.txid == revoked_txid {
7986 assert_eq!(node_txn[0].input.len(), 3); // Penalty txn claims to_local, offered_htlc and received_htlc outputs
7987 assert_eq!(node_txn[0].output.len(), 1);
7988 check_spends!(node_txn[0], revoked_txn[0]);
7989 penalty_3 = node_txn[0].txid();
7990 // Verify new bumped tx is different from last claiming transaction, we don't want spurrious rebroadcast
7991 assert_ne!(penalty_3, penalty_2);
7992 let fee_3 = penalty_sum - node_txn[0].output[0].value;
7993 feerate_3 = fee_3 * 1000 / node_txn[0].get_weight() as u64;
7994 // Verify 25% bump heuristic
7995 assert!(feerate_3 * 100 >= feerate_2 * 125);
7999 assert_ne!(feerate_3, 0);
8001 nodes[1].node.get_and_clear_pending_events();
8002 nodes[1].node.get_and_clear_pending_msg_events();
8006 fn test_bump_penalty_txn_on_revoked_htlcs() {
8007 // In case of penalty txn with too low feerates for getting into mempools, RBF-bump them to sure
8008 // we're able to claim outputs on revoked HTLC transactions before timelocks expiration
8010 let mut chanmon_cfgs = create_chanmon_cfgs(2);
8011 chanmon_cfgs[1].keys_manager.disable_revocation_policy_check = true;
8012 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8013 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8014 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8016 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
8017 // Lock HTLC in both directions (using a slightly lower CLTV delay to provide timely RBF bumps)
8018 let route = get_route(&nodes[0].node.get_our_node_id(), &nodes[0].net_graph_msg_handler.network_graph.read().unwrap(),
8019 &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 3_000_000, 50, nodes[0].logger).unwrap();
8020 let payment_preimage = send_along_route(&nodes[0], route, &[&nodes[1]], 3_000_000).0;
8021 let route = get_route(&nodes[1].node.get_our_node_id(), &nodes[1].net_graph_msg_handler.network_graph.read().unwrap(),
8022 &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 3_000_000, 50, nodes[0].logger).unwrap();
8023 send_along_route(&nodes[1], route, &[&nodes[0]], 3_000_000);
8025 let revoked_local_txn = get_local_commitment_txn!(nodes[1], chan.2);
8026 assert_eq!(revoked_local_txn[0].input.len(), 1);
8027 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan.3.txid());
8029 // Revoke local commitment tx
8030 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage);
8032 let header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8033 // B will generate both revoked HTLC-timeout/HTLC-preimage txn from revoked commitment tx
8034 connect_block(&nodes[1], &Block { header, txdata: vec![revoked_local_txn[0].clone()] });
8035 check_closed_broadcast!(nodes[1], true);
8036 check_added_monitors!(nodes[1], 1);
8037 connect_blocks(&nodes[1], 49); // Confirm blocks until the HTLC expires (note CLTV was explicitly 50 above)
8039 let revoked_htlc_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
8040 assert_eq!(revoked_htlc_txn.len(), 3);
8041 check_spends!(revoked_htlc_txn[1], chan.3);
8043 assert_eq!(revoked_htlc_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
8044 assert_eq!(revoked_htlc_txn[0].input.len(), 1);
8045 check_spends!(revoked_htlc_txn[0], revoked_local_txn[0]);
8047 assert_eq!(revoked_htlc_txn[2].input.len(), 1);
8048 assert_eq!(revoked_htlc_txn[2].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
8049 assert_eq!(revoked_htlc_txn[2].output.len(), 1);
8050 check_spends!(revoked_htlc_txn[2], revoked_local_txn[0]);
8052 // Broadcast set of revoked txn on A
8053 let hash_128 = connect_blocks(&nodes[0], 40);
8054 let header_11 = BlockHeader { version: 0x20000000, prev_blockhash: hash_128, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8055 connect_block(&nodes[0], &Block { header: header_11, txdata: vec![revoked_local_txn[0].clone()] });
8056 let header_129 = BlockHeader { version: 0x20000000, prev_blockhash: header_11.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8057 connect_block(&nodes[0], &Block { header: header_129, txdata: vec![revoked_htlc_txn[0].clone(), revoked_htlc_txn[2].clone()] });
8058 expect_pending_htlcs_forwardable_ignore!(nodes[0]);
8063 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8064 assert_eq!(node_txn.len(), 5); // 3 penalty txn on revoked commitment tx + A commitment tx + 1 penalty tnx on revoked HTLC txn
8065 // Verify claim tx are spending revoked HTLC txn
8067 // node_txn 0-2 each spend a separate revoked output from revoked_local_txn[0]
8068 // Note that node_txn[0] and node_txn[1] are bogus - they double spend the revoked_htlc_txn
8069 // which are included in the same block (they are broadcasted because we scan the
8070 // transactions linearly and generate claims as we go, they likely should be removed in the
8072 assert_eq!(node_txn[0].input.len(), 1);
8073 check_spends!(node_txn[0], revoked_local_txn[0]);
8074 assert_eq!(node_txn[1].input.len(), 1);
8075 check_spends!(node_txn[1], revoked_local_txn[0]);
8076 assert_eq!(node_txn[2].input.len(), 1);
8077 check_spends!(node_txn[2], revoked_local_txn[0]);
8079 // Each of the three justice transactions claim a separate (single) output of the three
8080 // available, which we check here:
8081 assert_ne!(node_txn[0].input[0].previous_output, node_txn[1].input[0].previous_output);
8082 assert_ne!(node_txn[0].input[0].previous_output, node_txn[2].input[0].previous_output);
8083 assert_ne!(node_txn[1].input[0].previous_output, node_txn[2].input[0].previous_output);
8085 assert_eq!(node_txn[0].input[0].previous_output, revoked_htlc_txn[0].input[0].previous_output);
8086 assert_eq!(node_txn[1].input[0].previous_output, revoked_htlc_txn[2].input[0].previous_output);
8088 // node_txn[3] is the local commitment tx broadcast just because (and somewhat in case of
8089 // reorgs, though its not clear its ever worth broadcasting conflicting txn like this when
8090 // a remote commitment tx has already been confirmed).
8091 check_spends!(node_txn[3], chan.3);
8093 // node_txn[4] spends the revoked outputs from the revoked_htlc_txn (which only have one
8094 // output, checked above).
8095 assert_eq!(node_txn[4].input.len(), 2);
8096 assert_eq!(node_txn[4].output.len(), 1);
8097 check_spends!(node_txn[4], revoked_htlc_txn[0], revoked_htlc_txn[2]);
8099 first = node_txn[4].txid();
8100 // Store both feerates for later comparison
8101 let fee_1 = revoked_htlc_txn[0].output[0].value + revoked_htlc_txn[2].output[0].value - node_txn[4].output[0].value;
8102 feerate_1 = fee_1 * 1000 / node_txn[4].get_weight() as u64;
8103 penalty_txn = vec![node_txn[2].clone()];
8107 // Connect one more block to see if bumped penalty are issued for HTLC txn
8108 let header_130 = BlockHeader { version: 0x20000000, prev_blockhash: header_129.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8109 connect_block(&nodes[0], &Block { header: header_130, txdata: penalty_txn });
8110 let header_131 = BlockHeader { version: 0x20000000, prev_blockhash: header_130.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8111 connect_block(&nodes[0], &Block { header: header_131, txdata: Vec::new() });
8113 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8114 assert_eq!(node_txn.len(), 2); // 2 bumped penalty txn on revoked commitment tx
8116 check_spends!(node_txn[0], revoked_local_txn[0]);
8117 check_spends!(node_txn[1], revoked_local_txn[0]);
8118 // Note that these are both bogus - they spend outputs already claimed in block 129:
8119 if node_txn[0].input[0].previous_output == revoked_htlc_txn[0].input[0].previous_output {
8120 assert_eq!(node_txn[1].input[0].previous_output, revoked_htlc_txn[2].input[0].previous_output);
8122 assert_eq!(node_txn[0].input[0].previous_output, revoked_htlc_txn[2].input[0].previous_output);
8123 assert_eq!(node_txn[1].input[0].previous_output, revoked_htlc_txn[0].input[0].previous_output);
8129 // Few more blocks to confirm penalty txn
8130 connect_blocks(&nodes[0], 4);
8131 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
8132 let header_144 = connect_blocks(&nodes[0], 9);
8134 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8135 assert_eq!(node_txn.len(), 1);
8137 assert_eq!(node_txn[0].input.len(), 2);
8138 check_spends!(node_txn[0], revoked_htlc_txn[0], revoked_htlc_txn[2]);
8139 // Verify bumped tx is different and 25% bump heuristic
8140 assert_ne!(first, node_txn[0].txid());
8141 let fee_2 = revoked_htlc_txn[0].output[0].value + revoked_htlc_txn[2].output[0].value - node_txn[0].output[0].value;
8142 let feerate_2 = fee_2 * 1000 / node_txn[0].get_weight() as u64;
8143 assert!(feerate_2 * 100 > feerate_1 * 125);
8144 let txn = vec![node_txn[0].clone()];
8148 // Broadcast claim txn and confirm blocks to avoid further bumps on this outputs
8149 let header_145 = BlockHeader { version: 0x20000000, prev_blockhash: header_144, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8150 connect_block(&nodes[0], &Block { header: header_145, txdata: node_txn });
8151 connect_blocks(&nodes[0], 20);
8153 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8154 // We verify than no new transaction has been broadcast because previously
8155 // we were buggy on this exact behavior by not tracking for monitoring remote HTLC outputs (see #411)
8156 // which means we wouldn't see a spend of them by a justice tx and bumped justice tx
8157 // were generated forever instead of safe cleaning after confirmation and ANTI_REORG_SAFE_DELAY blocks.
8158 // Enforce spending of revoked htlc output by claiming transaction remove request as expected and dry
8159 // up bumped justice generation.
8160 assert_eq!(node_txn.len(), 0);
8163 check_closed_broadcast!(nodes[0], true);
8164 check_added_monitors!(nodes[0], 1);
8168 fn test_bump_penalty_txn_on_remote_commitment() {
8169 // In case of claim txn with too low feerates for getting into mempools, RBF-bump them to be sure
8170 // we're able to claim outputs on remote commitment transaction before timelocks expiration
8173 // Provide preimage for one
8174 // Check aggregation
8176 let chanmon_cfgs = create_chanmon_cfgs(2);
8177 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8178 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8179 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8181 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
8182 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
8183 route_payment(&nodes[1], &vec!(&nodes[0])[..], 3000000).0;
8185 // Remote commitment txn with 4 outputs : to_local, to_remote, 1 outgoing HTLC, 1 incoming HTLC
8186 let remote_txn = get_local_commitment_txn!(nodes[0], chan.2);
8187 assert_eq!(remote_txn[0].output.len(), 4);
8188 assert_eq!(remote_txn[0].input.len(), 1);
8189 assert_eq!(remote_txn[0].input[0].previous_output.txid, chan.3.txid());
8191 // Claim a HTLC without revocation (provide B monitor with preimage)
8192 nodes[1].node.claim_funds(payment_preimage);
8193 mine_transaction(&nodes[1], &remote_txn[0]);
8194 check_added_monitors!(nodes[1], 2);
8195 connect_blocks(&nodes[1], TEST_FINAL_CLTV - 1); // Confirm blocks until the HTLC expires
8197 // One or more claim tx should have been broadcast, check it
8201 let feerate_timeout;
8202 let feerate_preimage;
8204 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
8205 // 9 transactions including:
8206 // 1*2 ChannelManager local broadcasts of commitment + HTLC-Success
8207 // 1*3 ChannelManager local broadcasts of commitment + HTLC-Success + HTLC-Timeout
8208 // 2 * HTLC-Success (one RBF bump we'll check later)
8210 assert_eq!(node_txn.len(), 8);
8211 assert_eq!(node_txn[0].input.len(), 1);
8212 assert_eq!(node_txn[6].input.len(), 1);
8213 check_spends!(node_txn[0], remote_txn[0]);
8214 check_spends!(node_txn[6], remote_txn[0]);
8215 assert_eq!(node_txn[0].input[0].previous_output, node_txn[3].input[0].previous_output);
8216 preimage_bump = node_txn[3].clone();
8218 check_spends!(node_txn[1], chan.3);
8219 check_spends!(node_txn[2], node_txn[1]);
8220 assert_eq!(node_txn[1], node_txn[4]);
8221 assert_eq!(node_txn[2], node_txn[5]);
8223 timeout = node_txn[6].txid();
8224 let index = node_txn[6].input[0].previous_output.vout;
8225 let fee = remote_txn[0].output[index as usize].value - node_txn[6].output[0].value;
8226 feerate_timeout = fee * 1000 / node_txn[6].get_weight() as u64;
8228 preimage = node_txn[0].txid();
8229 let index = node_txn[0].input[0].previous_output.vout;
8230 let fee = remote_txn[0].output[index as usize].value - node_txn[0].output[0].value;
8231 feerate_preimage = fee * 1000 / node_txn[0].get_weight() as u64;
8235 assert_ne!(feerate_timeout, 0);
8236 assert_ne!(feerate_preimage, 0);
8238 // After exhaustion of height timer, new bumped claim txn should have been broadcast, check it
8239 connect_blocks(&nodes[1], 15);
8241 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
8242 assert_eq!(node_txn.len(), 1);
8243 assert_eq!(node_txn[0].input.len(), 1);
8244 assert_eq!(preimage_bump.input.len(), 1);
8245 check_spends!(node_txn[0], remote_txn[0]);
8246 check_spends!(preimage_bump, remote_txn[0]);
8248 let index = preimage_bump.input[0].previous_output.vout;
8249 let fee = remote_txn[0].output[index as usize].value - preimage_bump.output[0].value;
8250 let new_feerate = fee * 1000 / preimage_bump.get_weight() as u64;
8251 assert!(new_feerate * 100 > feerate_timeout * 125);
8252 assert_ne!(timeout, preimage_bump.txid());
8254 let index = node_txn[0].input[0].previous_output.vout;
8255 let fee = remote_txn[0].output[index as usize].value - node_txn[0].output[0].value;
8256 let new_feerate = fee * 1000 / node_txn[0].get_weight() as u64;
8257 assert!(new_feerate * 100 > feerate_preimage * 125);
8258 assert_ne!(preimage, node_txn[0].txid());
8263 nodes[1].node.get_and_clear_pending_events();
8264 nodes[1].node.get_and_clear_pending_msg_events();
8268 fn test_counterparty_raa_skip_no_crash() {
8269 // Previously, if our counterparty sent two RAAs in a row without us having provided a
8270 // commitment transaction, we would have happily carried on and provided them the next
8271 // commitment transaction based on one RAA forward. This would probably eventually have led to
8272 // channel closure, but it would not have resulted in funds loss. Still, our
8273 // EnforcingSigner would have paniced as it doesn't like jumps into the future. Here, we
8274 // check simply that the channel is closed in response to such an RAA, but don't check whether
8275 // we decide to punish our counterparty for revoking their funds (as we don't currently
8277 let chanmon_cfgs = create_chanmon_cfgs(2);
8278 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8279 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8280 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8281 let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
8283 let mut guard = nodes[0].node.channel_state.lock().unwrap();
8284 let keys = &guard.by_id.get_mut(&channel_id).unwrap().get_signer();
8285 const INITIAL_COMMITMENT_NUMBER: u64 = (1 << 48) - 1;
8286 let per_commitment_secret = keys.release_commitment_secret(INITIAL_COMMITMENT_NUMBER);
8287 // Must revoke without gaps
8288 keys.release_commitment_secret(INITIAL_COMMITMENT_NUMBER - 1);
8289 let next_per_commitment_point = PublicKey::from_secret_key(&Secp256k1::new(),
8290 &SecretKey::from_slice(&keys.release_commitment_secret(INITIAL_COMMITMENT_NUMBER - 2)).unwrap());
8292 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(),
8293 &msgs::RevokeAndACK { channel_id, per_commitment_secret, next_per_commitment_point });
8294 assert_eq!(check_closed_broadcast!(nodes[1], true).unwrap().data, "Received an unexpected revoke_and_ack");
8295 check_added_monitors!(nodes[1], 1);
8299 fn test_bump_txn_sanitize_tracking_maps() {
8300 // Sanitizing pendning_claim_request and claimable_outpoints used to be buggy,
8301 // verify we clean then right after expiration of ANTI_REORG_DELAY.
8303 let chanmon_cfgs = create_chanmon_cfgs(2);
8304 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8305 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8306 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8308 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
8309 // Lock HTLC in both directions
8310 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9_000_000).0;
8311 route_payment(&nodes[1], &vec!(&nodes[0])[..], 9_000_000).0;
8313 let revoked_local_txn = get_local_commitment_txn!(nodes[1], chan.2);
8314 assert_eq!(revoked_local_txn[0].input.len(), 1);
8315 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan.3.txid());
8317 // Revoke local commitment tx
8318 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage);
8320 // Broadcast set of revoked txn on A
8321 connect_blocks(&nodes[0], TEST_FINAL_CLTV + 2 - CHAN_CONFIRM_DEPTH);
8322 expect_pending_htlcs_forwardable_ignore!(nodes[0]);
8323 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 0);
8325 mine_transaction(&nodes[0], &revoked_local_txn[0]);
8326 check_closed_broadcast!(nodes[0], true);
8327 check_added_monitors!(nodes[0], 1);
8329 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8330 assert_eq!(node_txn.len(), 4); //ChannelMonitor: justice txn * 3, ChannelManager: local commitment tx
8331 check_spends!(node_txn[0], revoked_local_txn[0]);
8332 check_spends!(node_txn[1], revoked_local_txn[0]);
8333 check_spends!(node_txn[2], revoked_local_txn[0]);
8334 let penalty_txn = vec![node_txn[0].clone(), node_txn[1].clone(), node_txn[2].clone()];
8338 let header_130 = BlockHeader { version: 0x20000000, prev_blockhash: nodes[0].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8339 connect_block(&nodes[0], &Block { header: header_130, txdata: penalty_txn });
8340 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
8342 let monitors = nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap();
8343 if let Some(monitor) = monitors.get(&OutPoint { txid: chan.3.txid(), index: 0 }) {
8344 assert!(monitor.inner.lock().unwrap().onchain_tx_handler.pending_claim_requests.is_empty());
8345 assert!(monitor.inner.lock().unwrap().onchain_tx_handler.claimable_outpoints.is_empty());
8351 fn test_override_channel_config() {
8352 let chanmon_cfgs = create_chanmon_cfgs(2);
8353 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8354 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8355 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8357 // Node0 initiates a channel to node1 using the override config.
8358 let mut override_config = UserConfig::default();
8359 override_config.own_channel_config.our_to_self_delay = 200;
8361 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 16_000_000, 12_000_000, 42, Some(override_config)).unwrap();
8363 // Assert the channel created by node0 is using the override config.
8364 let res = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
8365 assert_eq!(res.channel_flags, 0);
8366 assert_eq!(res.to_self_delay, 200);
8370 fn test_override_0msat_htlc_minimum() {
8371 let mut zero_config = UserConfig::default();
8372 zero_config.own_channel_config.our_htlc_minimum_msat = 0;
8373 let chanmon_cfgs = create_chanmon_cfgs(2);
8374 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8375 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, Some(zero_config.clone())]);
8376 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8378 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 16_000_000, 12_000_000, 42, Some(zero_config)).unwrap();
8379 let res = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
8380 assert_eq!(res.htlc_minimum_msat, 1);
8382 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &res);
8383 let res = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
8384 assert_eq!(res.htlc_minimum_msat, 1);
8388 fn test_simple_mpp() {
8389 // Simple test of sending a multi-path payment.
8390 let chanmon_cfgs = create_chanmon_cfgs(4);
8391 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
8392 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
8393 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
8395 let chan_1_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
8396 let chan_2_id = create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
8397 let chan_3_id = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
8398 let chan_4_id = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
8399 let logger = test_utils::TestLogger::new();
8401 let (payment_preimage, payment_hash, payment_secret) = get_payment_preimage_hash!(&nodes[3]);
8402 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
8403 let mut route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[3].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
8404 let path = route.paths[0].clone();
8405 route.paths.push(path);
8406 route.paths[0][0].pubkey = nodes[1].node.get_our_node_id();
8407 route.paths[0][0].short_channel_id = chan_1_id;
8408 route.paths[0][1].short_channel_id = chan_3_id;
8409 route.paths[1][0].pubkey = nodes[2].node.get_our_node_id();
8410 route.paths[1][0].short_channel_id = chan_2_id;
8411 route.paths[1][1].short_channel_id = chan_4_id;
8412 send_along_route_with_secret(&nodes[0], route, &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], 200_000, payment_hash, payment_secret);
8413 claim_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], false, payment_preimage);
8417 fn test_preimage_storage() {
8418 // Simple test of payment preimage storage allowing no client-side storage to claim payments
8419 let chanmon_cfgs = create_chanmon_cfgs(2);
8420 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8421 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8422 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8424 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
8427 let (payment_hash, payment_secret) = nodes[1].node.create_inbound_payment(Some(100_000), 7200, 42);
8429 let logger = test_utils::TestLogger::new();
8430 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
8431 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100_000, TEST_FINAL_CLTV, &logger).unwrap();
8432 nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
8433 check_added_monitors!(nodes[0], 1);
8434 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
8435 let mut payment_event = SendEvent::from_event(events.pop().unwrap());
8436 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
8437 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
8439 // Note that after leaving the above scope we have no knowledge of any arguments or return
8440 // values from previous calls.
8441 expect_pending_htlcs_forwardable!(nodes[1]);
8442 let events = nodes[1].node.get_and_clear_pending_events();
8443 assert_eq!(events.len(), 1);
8445 Event::PaymentReceived { payment_preimage, user_payment_id, .. } => {
8446 assert_eq!(user_payment_id, 42);
8447 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage.unwrap());
8449 _ => panic!("Unexpected event"),
8454 fn test_secret_timeout() {
8455 // Simple test of payment secret storage time outs
8456 let chanmon_cfgs = create_chanmon_cfgs(2);
8457 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8458 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8459 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8461 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
8463 let (payment_hash, payment_secret_1) = nodes[1].node.create_inbound_payment(Some(100_000), 2, 0);
8465 // We should fail to register the same payment hash twice, at least until we've connected a
8466 // block with time 7200 + CHAN_CONFIRM_DEPTH + 1.
8467 if let Err(APIError::APIMisuseError { err }) = nodes[1].node.create_inbound_payment_for_hash(payment_hash, Some(100_000), 2, 0) {
8468 assert_eq!(err, "Duplicate payment hash");
8469 } else { panic!(); }
8471 let node_1_blocks = nodes[1].blocks.lock().unwrap();
8473 header: BlockHeader {
8475 prev_blockhash: node_1_blocks.last().unwrap().0.block_hash(),
8476 merkle_root: Default::default(),
8477 time: node_1_blocks.len() as u32 + 7200, bits: 42, nonce: 42 },
8481 connect_block(&nodes[1], &block);
8482 if let Err(APIError::APIMisuseError { err }) = nodes[1].node.create_inbound_payment_for_hash(payment_hash, Some(100_000), 2, 0) {
8483 assert_eq!(err, "Duplicate payment hash");
8484 } else { panic!(); }
8486 // If we then connect the second block, we should be able to register the same payment hash
8487 // again with a different user_payment_id (this time getting a new payment secret).
8488 block.header.prev_blockhash = block.header.block_hash();
8489 block.header.time += 1;
8490 connect_block(&nodes[1], &block);
8491 let our_payment_secret = nodes[1].node.create_inbound_payment_for_hash(payment_hash, Some(100_000), 2, 42).unwrap();
8492 assert_ne!(payment_secret_1, our_payment_secret);
8495 let logger = test_utils::TestLogger::new();
8496 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
8497 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100_000, TEST_FINAL_CLTV, &logger).unwrap();
8498 nodes[0].node.send_payment(&route, payment_hash, &Some(our_payment_secret)).unwrap();
8499 check_added_monitors!(nodes[0], 1);
8500 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
8501 let mut payment_event = SendEvent::from_event(events.pop().unwrap());
8502 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
8503 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
8505 // Note that after leaving the above scope we have no knowledge of any arguments or return
8506 // values from previous calls.
8507 expect_pending_htlcs_forwardable!(nodes[1]);
8508 let events = nodes[1].node.get_and_clear_pending_events();
8509 assert_eq!(events.len(), 1);
8511 Event::PaymentReceived { payment_preimage, payment_secret, user_payment_id, .. } => {
8512 assert!(payment_preimage.is_none());
8513 assert_eq!(user_payment_id, 42);
8514 assert_eq!(payment_secret, our_payment_secret);
8515 // We don't actually have the payment preimage with which to claim this payment!
8517 _ => panic!("Unexpected event"),
8522 fn test_bad_secret_hash() {
8523 // Simple test of unregistered payment hash/invalid payment secret handling
8524 let chanmon_cfgs = create_chanmon_cfgs(2);
8525 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8526 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8527 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8529 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
8531 let random_payment_hash = PaymentHash([42; 32]);
8532 let random_payment_secret = PaymentSecret([43; 32]);
8533 let (our_payment_hash, our_payment_secret) = nodes[1].node.create_inbound_payment(Some(100_000), 2, 0);
8535 let logger = test_utils::TestLogger::new();
8536 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
8537 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100_000, TEST_FINAL_CLTV, &logger).unwrap();
8539 // All the below cases should end up being handled exactly identically, so we macro the
8540 // resulting events.
8541 macro_rules! handle_unknown_invalid_payment_data {
8543 check_added_monitors!(nodes[0], 1);
8544 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
8545 let payment_event = SendEvent::from_event(events.pop().unwrap());
8546 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
8547 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
8549 // We have to forward pending HTLCs once to process the receipt of the HTLC and then
8550 // again to process the pending backwards-failure of the HTLC
8551 expect_pending_htlcs_forwardable!(nodes[1]);
8552 expect_pending_htlcs_forwardable!(nodes[1]);
8553 check_added_monitors!(nodes[1], 1);
8555 // We should fail the payment back
8556 let mut events = nodes[1].node.get_and_clear_pending_msg_events();
8557 match events.pop().unwrap() {
8558 MessageSendEvent::UpdateHTLCs { node_id: _, updates: msgs::CommitmentUpdate { update_fail_htlcs, commitment_signed, .. } } => {
8559 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]);
8560 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false);
8562 _ => panic!("Unexpected event"),
8567 let expected_error_code = 0x4000|15; // incorrect_or_unknown_payment_details
8568 // Error data is the HTLC value (100,000) and current block height
8569 let expected_error_data = [0, 0, 0, 0, 0, 1, 0x86, 0xa0, 0, 0, 0, CHAN_CONFIRM_DEPTH as u8];
8571 // Send a payment with the right payment hash but the wrong payment secret
8572 nodes[0].node.send_payment(&route, our_payment_hash, &Some(random_payment_secret)).unwrap();
8573 handle_unknown_invalid_payment_data!();
8574 expect_payment_failed!(nodes[0], our_payment_hash, true, expected_error_code, expected_error_data);
8576 // Send a payment with a random payment hash, but the right payment secret
8577 nodes[0].node.send_payment(&route, random_payment_hash, &Some(our_payment_secret)).unwrap();
8578 handle_unknown_invalid_payment_data!();
8579 expect_payment_failed!(nodes[0], random_payment_hash, true, expected_error_code, expected_error_data);
8581 // Send a payment with a random payment hash and random payment secret
8582 nodes[0].node.send_payment(&route, random_payment_hash, &Some(random_payment_secret)).unwrap();
8583 handle_unknown_invalid_payment_data!();
8584 expect_payment_failed!(nodes[0], random_payment_hash, true, expected_error_code, expected_error_data);
8588 fn test_update_err_monitor_lockdown() {
8589 // Our monitor will lock update of local commitment transaction if a broadcastion condition
8590 // has been fulfilled (either force-close from Channel or block height requiring a HTLC-
8591 // timeout). Trying to update monitor after lockdown should return a ChannelMonitorUpdateErr.
8593 // This scenario may happen in a watchtower setup, where watchtower process a block height
8594 // triggering a timeout while a slow-block-processing ChannelManager receives a local signed
8595 // commitment at same time.
8597 let chanmon_cfgs = create_chanmon_cfgs(2);
8598 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8599 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8600 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8602 // Create some initial channel
8603 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
8604 let outpoint = OutPoint { txid: chan_1.3.txid(), index: 0 };
8606 // Rebalance the network to generate htlc in the two directions
8607 send_payment(&nodes[0], &vec!(&nodes[1])[..], 10_000_000);
8609 // Route a HTLC from node 0 to node 1 (but don't settle)
8610 let preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9_000_000).0;
8612 // Copy ChainMonitor to simulate a watchtower and update block height of node 0 until its ChannelMonitor timeout HTLC onchain
8613 let chain_source = test_utils::TestChainSource::new(Network::Testnet);
8614 let logger = test_utils::TestLogger::with_id(format!("node {}", 0));
8615 let persister = test_utils::TestPersister::new();
8617 let monitors = nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap();
8618 let monitor = monitors.get(&outpoint).unwrap();
8619 let mut w = test_utils::TestVecWriter(Vec::new());
8620 monitor.write(&mut w).unwrap();
8621 let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
8622 &mut ::std::io::Cursor::new(&w.0), &test_utils::OnlyReadsKeysInterface {}).unwrap().1;
8623 assert!(new_monitor == *monitor);
8624 let watchtower = test_utils::TestChainMonitor::new(Some(&chain_source), &chanmon_cfgs[0].tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator, &persister, &node_cfgs[0].keys_manager);
8625 assert!(watchtower.watch_channel(outpoint, new_monitor).is_ok());
8628 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8629 // Make the tx_broadcaster aware of enough blocks that it doesn't think we're violating
8630 // transaction lock time requirements here.
8631 chanmon_cfgs[0].tx_broadcaster.blocks.lock().unwrap().resize(200, (header, 0));
8632 watchtower.chain_monitor.block_connected(&Block { header, txdata: vec![] }, 200);
8634 // Try to update ChannelMonitor
8635 assert!(nodes[1].node.claim_funds(preimage));
8636 check_added_monitors!(nodes[1], 1);
8637 let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
8638 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
8639 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
8640 if let Some(ref mut channel) = nodes[0].node.channel_state.lock().unwrap().by_id.get_mut(&chan_1.2) {
8641 if let Ok((_, _, _, update)) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].fee_estimator, &node_cfgs[0].logger) {
8642 if let Err(_) = watchtower.chain_monitor.update_channel(outpoint, update.clone()) {} else { assert!(false); }
8643 if let Ok(_) = nodes[0].chain_monitor.update_channel(outpoint, update) {} else { assert!(false); }
8644 } else { assert!(false); }
8645 } else { assert!(false); };
8646 // Our local monitor is in-sync and hasn't processed yet timeout
8647 check_added_monitors!(nodes[0], 1);
8648 let events = nodes[0].node.get_and_clear_pending_events();
8649 assert_eq!(events.len(), 1);
8653 fn test_concurrent_monitor_claim() {
8654 // Watchtower A receives block, broadcasts state N, then channel receives new state N+1,
8655 // sending it to both watchtowers, Bob accepts N+1, then receives block and broadcasts
8656 // the latest state N+1, Alice rejects state N+1, but Bob has already broadcast it,
8657 // state N+1 confirms. Alice claims output from state N+1.
8659 let chanmon_cfgs = create_chanmon_cfgs(2);
8660 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8661 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8662 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8664 // Create some initial channel
8665 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
8666 let outpoint = OutPoint { txid: chan_1.3.txid(), index: 0 };
8668 // Rebalance the network to generate htlc in the two directions
8669 send_payment(&nodes[0], &vec!(&nodes[1])[..], 10_000_000);
8671 // Route a HTLC from node 0 to node 1 (but don't settle)
8672 route_payment(&nodes[0], &vec!(&nodes[1])[..], 9_000_000).0;
8674 // Copy ChainMonitor to simulate watchtower Alice and update block height her ChannelMonitor timeout HTLC onchain
8675 let chain_source = test_utils::TestChainSource::new(Network::Testnet);
8676 let logger = test_utils::TestLogger::with_id(format!("node {}", "Alice"));
8677 let persister = test_utils::TestPersister::new();
8678 let watchtower_alice = {
8679 let monitors = nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap();
8680 let monitor = monitors.get(&outpoint).unwrap();
8681 let mut w = test_utils::TestVecWriter(Vec::new());
8682 monitor.write(&mut w).unwrap();
8683 let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
8684 &mut ::std::io::Cursor::new(&w.0), &test_utils::OnlyReadsKeysInterface {}).unwrap().1;
8685 assert!(new_monitor == *monitor);
8686 let watchtower = test_utils::TestChainMonitor::new(Some(&chain_source), &chanmon_cfgs[0].tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator, &persister, &node_cfgs[0].keys_manager);
8687 assert!(watchtower.watch_channel(outpoint, new_monitor).is_ok());
8690 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8691 // Make the tx_broadcaster aware of enough blocks that it doesn't think we're violating
8692 // transaction lock time requirements here.
8693 chanmon_cfgs[0].tx_broadcaster.blocks.lock().unwrap().resize((CHAN_CONFIRM_DEPTH + 1 + TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS) as usize, (header, 0));
8694 watchtower_alice.chain_monitor.block_connected(&Block { header, txdata: vec![] }, CHAN_CONFIRM_DEPTH + 1 + TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS);
8696 // Watchtower Alice should have broadcast a commitment/HTLC-timeout
8698 let mut txn = chanmon_cfgs[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8699 assert_eq!(txn.len(), 2);
8703 // Copy ChainMonitor to simulate watchtower Bob and make it receive a commitment update first.
8704 let chain_source = test_utils::TestChainSource::new(Network::Testnet);
8705 let logger = test_utils::TestLogger::with_id(format!("node {}", "Bob"));
8706 let persister = test_utils::TestPersister::new();
8707 let watchtower_bob = {
8708 let monitors = nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap();
8709 let monitor = monitors.get(&outpoint).unwrap();
8710 let mut w = test_utils::TestVecWriter(Vec::new());
8711 monitor.write(&mut w).unwrap();
8712 let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
8713 &mut ::std::io::Cursor::new(&w.0), &test_utils::OnlyReadsKeysInterface {}).unwrap().1;
8714 assert!(new_monitor == *monitor);
8715 let watchtower = test_utils::TestChainMonitor::new(Some(&chain_source), &chanmon_cfgs[0].tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator, &persister, &node_cfgs[0].keys_manager);
8716 assert!(watchtower.watch_channel(outpoint, new_monitor).is_ok());
8719 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8720 watchtower_bob.chain_monitor.block_connected(&Block { header, txdata: vec![] }, CHAN_CONFIRM_DEPTH + TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS);
8722 // Route another payment to generate another update with still previous HTLC pending
8723 let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[0]);
8725 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
8726 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 3000000 , TEST_FINAL_CLTV, &logger).unwrap();
8727 nodes[1].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
8729 check_added_monitors!(nodes[1], 1);
8731 let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
8732 assert_eq!(updates.update_add_htlcs.len(), 1);
8733 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &updates.update_add_htlcs[0]);
8734 if let Some(ref mut channel) = nodes[0].node.channel_state.lock().unwrap().by_id.get_mut(&chan_1.2) {
8735 if let Ok((_, _, _, update)) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].fee_estimator, &node_cfgs[0].logger) {
8736 // Watchtower Alice should already have seen the block and reject the update
8737 if let Err(_) = watchtower_alice.chain_monitor.update_channel(outpoint, update.clone()) {} else { assert!(false); }
8738 if let Ok(_) = watchtower_bob.chain_monitor.update_channel(outpoint, update.clone()) {} else { assert!(false); }
8739 if let Ok(_) = nodes[0].chain_monitor.update_channel(outpoint, update) {} else { assert!(false); }
8740 } else { assert!(false); }
8741 } else { assert!(false); };
8742 // Our local monitor is in-sync and hasn't processed yet timeout
8743 check_added_monitors!(nodes[0], 1);
8745 //// Provide one more block to watchtower Bob, expect broadcast of commitment and HTLC-Timeout
8746 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8747 watchtower_bob.chain_monitor.block_connected(&Block { header, txdata: vec![] }, CHAN_CONFIRM_DEPTH + 1 + TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS);
8749 // Watchtower Bob should have broadcast a commitment/HTLC-timeout
8752 let mut txn = chanmon_cfgs[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8753 assert_eq!(txn.len(), 2);
8754 bob_state_y = txn[0].clone();
8758 // We confirm Bob's state Y on Alice, she should broadcast a HTLC-timeout
8759 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8760 watchtower_alice.chain_monitor.block_connected(&Block { header, txdata: vec![bob_state_y.clone()] }, CHAN_CONFIRM_DEPTH + 2 + TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS);
8762 let htlc_txn = chanmon_cfgs[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8763 // We broadcast twice the transaction, once due to the HTLC-timeout, once due
8764 // the onchain detection of the HTLC output
8765 assert_eq!(htlc_txn.len(), 2);
8766 check_spends!(htlc_txn[0], bob_state_y);
8767 check_spends!(htlc_txn[1], bob_state_y);
8772 fn test_pre_lockin_no_chan_closed_update() {
8773 // Test that if a peer closes a channel in response to a funding_created message we don't
8774 // generate a channel update (as the channel cannot appear on chain without a funding_signed
8777 // Doing so would imply a channel monitor update before the initial channel monitor
8778 // registration, violating our API guarantees.
8780 // Previously, full_stack_target managed to hit this case by opening then closing a channel,
8781 // then opening a second channel with the same funding output as the first (which is not
8782 // rejected because the first channel does not exist in the ChannelManager) and closing it
8783 // before receiving funding_signed.
8784 let chanmon_cfgs = create_chanmon_cfgs(2);
8785 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8786 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8787 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8789 // Create an initial channel
8790 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
8791 let mut open_chan_msg = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
8792 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_chan_msg);
8793 let accept_chan_msg = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
8794 nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &accept_chan_msg);
8796 // Move the first channel through the funding flow...
8797 let (temporary_channel_id, tx, _) = create_funding_transaction(&nodes[0], 100000, 42);
8799 nodes[0].node.funding_transaction_generated(&temporary_channel_id, tx.clone()).unwrap();
8800 check_added_monitors!(nodes[0], 0);
8802 let funding_created_msg = get_event_msg!(nodes[0], MessageSendEvent::SendFundingCreated, nodes[1].node.get_our_node_id());
8803 let channel_id = ::chain::transaction::OutPoint { txid: funding_created_msg.funding_txid, index: funding_created_msg.funding_output_index }.to_channel_id();
8804 nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msgs::ErrorMessage { channel_id, data: "Hi".to_owned() });
8805 assert!(nodes[0].chain_monitor.added_monitors.lock().unwrap().is_empty());
8809 fn test_htlc_no_detection() {
8810 // This test is a mutation to underscore the detection logic bug we had
8811 // before #653. HTLC value routed is above the remaining balance, thus
8812 // inverting HTLC and `to_remote` output. HTLC will come second and
8813 // it wouldn't be seen by pre-#653 detection as we were enumerate()'ing
8814 // on a watched outputs vector (Vec<TxOut>) thus implicitly relying on
8815 // outputs order detection for correct spending children filtring.
8817 let chanmon_cfgs = create_chanmon_cfgs(2);
8818 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8819 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8820 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8822 // Create some initial channels
8823 let chan_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001, InitFeatures::known(), InitFeatures::known());
8825 send_payment(&nodes[0], &vec!(&nodes[1])[..], 1_000_000);
8826 let (_, our_payment_hash, _) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 2_000_000);
8827 let local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
8828 assert_eq!(local_txn[0].input.len(), 1);
8829 assert_eq!(local_txn[0].output.len(), 3);
8830 check_spends!(local_txn[0], chan_1.3);
8832 // Timeout HTLC on A's chain and so it can generate a HTLC-Timeout tx
8833 let header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[0].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8834 connect_block(&nodes[0], &Block { header, txdata: vec![local_txn[0].clone()] });
8835 // We deliberately connect the local tx twice as this should provoke a failure calling
8836 // this test before #653 fix.
8837 chain::Listen::block_connected(&nodes[0].chain_monitor.chain_monitor, &Block { header, txdata: vec![local_txn[0].clone()] }, nodes[0].best_block_info().1 + 1);
8838 check_closed_broadcast!(nodes[0], true);
8839 check_added_monitors!(nodes[0], 1);
8840 connect_blocks(&nodes[0], TEST_FINAL_CLTV - 1);
8842 let htlc_timeout = {
8843 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8844 assert_eq!(node_txn[1].input.len(), 1);
8845 assert_eq!(node_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
8846 check_spends!(node_txn[1], local_txn[0]);
8850 let header_201 = BlockHeader { version: 0x20000000, prev_blockhash: nodes[0].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8851 connect_block(&nodes[0], &Block { header: header_201, txdata: vec![htlc_timeout.clone()] });
8852 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
8853 expect_payment_failed!(nodes[0], our_payment_hash, true);
8856 fn do_test_onchain_htlc_settlement_after_close(broadcast_alice: bool, go_onchain_before_fulfill: bool) {
8857 // If we route an HTLC, then learn the HTLC's preimage after the upstream channel has been
8858 // force-closed, we must claim that HTLC on-chain. (Given an HTLC forwarded from Alice --> Bob -->
8859 // Carol, Alice would be the upstream node, and Carol the downstream.)
8861 // Steps of the test:
8862 // 1) Alice sends a HTLC to Carol through Bob.
8863 // 2) Carol doesn't settle the HTLC.
8864 // 3) If broadcast_alice is true, Alice force-closes her channel with Bob. Else Bob force closes.
8865 // Steps 4 and 5 may be reordered depending on go_onchain_before_fulfill.
8866 // 4) Bob sees the Alice's commitment on his chain or vice versa. An offered output is present
8867 // but can't be claimed as Bob doesn't have yet knowledge of the preimage.
8868 // 5) Carol release the preimage to Bob off-chain.
8869 // 6) Bob claims the offered output on the broadcasted commitment.
8870 let chanmon_cfgs = create_chanmon_cfgs(3);
8871 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
8872 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
8873 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
8875 // Create some initial channels
8876 let chan_ab = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001, InitFeatures::known(), InitFeatures::known());
8877 create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 10001, InitFeatures::known(), InitFeatures::known());
8879 // Steps (1) and (2):
8880 // Send an HTLC Alice --> Bob --> Carol, but Carol doesn't settle the HTLC back.
8881 let (payment_preimage, _payment_hash, _payment_secret) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3_000_000);
8883 // Check that Alice's commitment transaction now contains an output for this HTLC.
8884 let alice_txn = get_local_commitment_txn!(nodes[0], chan_ab.2);
8885 check_spends!(alice_txn[0], chan_ab.3);
8886 assert_eq!(alice_txn[0].output.len(), 2);
8887 check_spends!(alice_txn[1], alice_txn[0]); // 2nd transaction is a non-final HTLC-timeout
8888 assert_eq!(alice_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
8889 assert_eq!(alice_txn.len(), 2);
8891 // Steps (3) and (4):
8892 // If `go_onchain_before_fufill`, broadcast the relevant commitment transaction and check that Bob
8893 // responds by (1) broadcasting a channel update and (2) adding a new ChannelMonitor.
8894 let mut force_closing_node = 0; // Alice force-closes
8895 if !broadcast_alice { force_closing_node = 1; } // Bob force-closes
8896 nodes[force_closing_node].node.force_close_channel(&chan_ab.2).unwrap();
8897 check_closed_broadcast!(nodes[force_closing_node], true);
8898 check_added_monitors!(nodes[force_closing_node], 1);
8899 if go_onchain_before_fulfill {
8900 let txn_to_broadcast = match broadcast_alice {
8901 true => alice_txn.clone(),
8902 false => get_local_commitment_txn!(nodes[1], chan_ab.2)
8904 let header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
8905 connect_block(&nodes[1], &Block { header, txdata: vec![txn_to_broadcast[0].clone()]});
8906 let mut bob_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
8907 if broadcast_alice {
8908 check_closed_broadcast!(nodes[1], true);
8909 check_added_monitors!(nodes[1], 1);
8911 assert_eq!(bob_txn.len(), 1);
8912 check_spends!(bob_txn[0], chan_ab.3);
8916 // Carol then claims the funds and sends an update_fulfill message to Bob, and they go through the
8917 // process of removing the HTLC from their commitment transactions.
8918 assert!(nodes[2].node.claim_funds(payment_preimage));
8919 check_added_monitors!(nodes[2], 1);
8920 let carol_updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
8921 assert!(carol_updates.update_add_htlcs.is_empty());
8922 assert!(carol_updates.update_fail_htlcs.is_empty());
8923 assert!(carol_updates.update_fail_malformed_htlcs.is_empty());
8924 assert!(carol_updates.update_fee.is_none());
8925 assert_eq!(carol_updates.update_fulfill_htlcs.len(), 1);
8927 nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &carol_updates.update_fulfill_htlcs[0]);
8928 // If Alice broadcasted but Bob doesn't know yet, here he prepares to tell her about the preimage.
8929 if !go_onchain_before_fulfill && broadcast_alice {
8930 let events = nodes[1].node.get_and_clear_pending_msg_events();
8931 assert_eq!(events.len(), 1);
8933 MessageSendEvent::UpdateHTLCs { ref node_id, .. } => {
8934 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
8936 _ => panic!("Unexpected event"),
8939 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &carol_updates.commitment_signed);
8940 // One monitor update for the preimage to update the Bob<->Alice channel, one monitor update
8941 // Carol<->Bob's updated commitment transaction info.
8942 check_added_monitors!(nodes[1], 2);
8944 let events = nodes[1].node.get_and_clear_pending_msg_events();
8945 assert_eq!(events.len(), 2);
8946 let bob_revocation = match events[0] {
8947 MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
8948 assert_eq!(*node_id, nodes[2].node.get_our_node_id());
8951 _ => panic!("Unexpected event"),
8953 let bob_updates = match events[1] {
8954 MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => {
8955 assert_eq!(*node_id, nodes[2].node.get_our_node_id());
8958 _ => panic!("Unexpected event"),
8961 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bob_revocation);
8962 check_added_monitors!(nodes[2], 1);
8963 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bob_updates.commitment_signed);
8964 check_added_monitors!(nodes[2], 1);
8966 let events = nodes[2].node.get_and_clear_pending_msg_events();
8967 assert_eq!(events.len(), 1);
8968 let carol_revocation = match events[0] {
8969 MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
8970 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
8973 _ => panic!("Unexpected event"),
8975 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &carol_revocation);
8976 check_added_monitors!(nodes[1], 1);
8978 // If this test requires the force-closed channel to not be on-chain until after the fulfill,
8979 // here's where we put said channel's commitment tx on-chain.
8980 let mut txn_to_broadcast = alice_txn.clone();
8981 if !broadcast_alice { txn_to_broadcast = get_local_commitment_txn!(nodes[1], chan_ab.2); }
8982 if !go_onchain_before_fulfill {
8983 let header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
8984 connect_block(&nodes[1], &Block { header, txdata: vec![txn_to_broadcast[0].clone()]});
8985 // If Bob was the one to force-close, he will have already passed these checks earlier.
8986 if broadcast_alice {
8987 check_closed_broadcast!(nodes[1], true);
8988 check_added_monitors!(nodes[1], 1);
8990 let mut bob_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
8991 if broadcast_alice {
8992 // In `connect_block()`, the ChainMonitor and ChannelManager are separately notified about a
8993 // new block being connected. The ChannelManager being notified triggers a monitor update,
8994 // which triggers broadcasting our commitment tx and an HTLC-claiming tx. The ChainMonitor
8995 // being notified triggers the HTLC-claiming tx redundantly, resulting in 3 total txs being
8997 assert_eq!(bob_txn.len(), 3);
8998 check_spends!(bob_txn[1], chan_ab.3);
9000 assert_eq!(bob_txn.len(), 2);
9001 check_spends!(bob_txn[0], chan_ab.3);
9006 // Finally, check that Bob broadcasted a preimage-claiming transaction for the HTLC output on the
9007 // broadcasted commitment transaction.
9009 let bob_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
9010 if go_onchain_before_fulfill {
9011 // Bob should now have an extra broadcasted tx, for the preimage-claiming transaction.
9012 assert_eq!(bob_txn.len(), 2);
9014 let script_weight = match broadcast_alice {
9015 true => OFFERED_HTLC_SCRIPT_WEIGHT,
9016 false => ACCEPTED_HTLC_SCRIPT_WEIGHT
9018 // If Alice force-closed and Bob didn't receive her commitment transaction until after he
9019 // received Carol's fulfill, he broadcasts the HTLC-output-claiming transaction first. Else if
9020 // Bob force closed or if he found out about Alice's commitment tx before receiving Carol's
9021 // fulfill, then he broadcasts the HTLC-output-claiming transaction second.
9022 if broadcast_alice && !go_onchain_before_fulfill {
9023 check_spends!(bob_txn[0], txn_to_broadcast[0]);
9024 assert_eq!(bob_txn[0].input[0].witness.last().unwrap().len(), script_weight);
9026 check_spends!(bob_txn[1], txn_to_broadcast[0]);
9027 assert_eq!(bob_txn[1].input[0].witness.last().unwrap().len(), script_weight);
9033 fn test_onchain_htlc_settlement_after_close() {
9034 do_test_onchain_htlc_settlement_after_close(true, true);
9035 do_test_onchain_htlc_settlement_after_close(false, true); // Technically redundant, but may as well
9036 do_test_onchain_htlc_settlement_after_close(true, false);
9037 do_test_onchain_htlc_settlement_after_close(false, false);
9041 fn test_duplicate_chan_id() {
9042 // Test that if a given peer tries to open a channel with the same channel_id as one that is
9043 // already open we reject it and keep the old channel.
9045 // Previously, full_stack_target managed to figure out that if you tried to open two channels
9046 // with the same funding output (ie post-funding channel_id), we'd create a monitor update for
9047 // the existing channel when we detect the duplicate new channel, screwing up our monitor
9048 // updating logic for the existing channel.
9049 let chanmon_cfgs = create_chanmon_cfgs(2);
9050 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
9051 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
9052 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
9054 // Create an initial channel
9055 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
9056 let mut open_chan_msg = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
9057 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_chan_msg);
9058 nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id()));
9060 // Try to create a second channel with the same temporary_channel_id as the first and check
9061 // that it is rejected.
9062 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_chan_msg);
9064 let events = nodes[1].node.get_and_clear_pending_msg_events();
9065 assert_eq!(events.len(), 1);
9067 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
9068 // Technically, at this point, nodes[1] would be justified in thinking both the
9069 // first (valid) and second (invalid) channels are closed, given they both have
9070 // the same non-temporary channel_id. However, currently we do not, so we just
9071 // move forward with it.
9072 assert_eq!(msg.channel_id, open_chan_msg.temporary_channel_id);
9073 assert_eq!(node_id, nodes[0].node.get_our_node_id());
9075 _ => panic!("Unexpected event"),
9079 // Move the first channel through the funding flow...
9080 let (temporary_channel_id, tx, funding_output) = create_funding_transaction(&nodes[0], 100000, 42);
9082 nodes[0].node.funding_transaction_generated(&temporary_channel_id, tx.clone()).unwrap();
9083 check_added_monitors!(nodes[0], 0);
9085 let mut funding_created_msg = get_event_msg!(nodes[0], MessageSendEvent::SendFundingCreated, nodes[1].node.get_our_node_id());
9086 nodes[1].node.handle_funding_created(&nodes[0].node.get_our_node_id(), &funding_created_msg);
9088 let mut added_monitors = nodes[1].chain_monitor.added_monitors.lock().unwrap();
9089 assert_eq!(added_monitors.len(), 1);
9090 assert_eq!(added_monitors[0].0, funding_output);
9091 added_monitors.clear();
9093 let funding_signed_msg = get_event_msg!(nodes[1], MessageSendEvent::SendFundingSigned, nodes[0].node.get_our_node_id());
9095 let funding_outpoint = ::chain::transaction::OutPoint { txid: funding_created_msg.funding_txid, index: funding_created_msg.funding_output_index };
9096 let channel_id = funding_outpoint.to_channel_id();
9098 // Now we have the first channel past funding_created (ie it has a txid-based channel_id, not a
9101 // First try to open a second channel with a temporary channel id equal to the txid-based one.
9102 // Technically this is allowed by the spec, but we don't support it and there's little reason
9103 // to. Still, it shouldn't cause any other issues.
9104 open_chan_msg.temporary_channel_id = channel_id;
9105 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_chan_msg);
9107 let events = nodes[1].node.get_and_clear_pending_msg_events();
9108 assert_eq!(events.len(), 1);
9110 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
9111 // Technically, at this point, nodes[1] would be justified in thinking both
9112 // channels are closed, but currently we do not, so we just move forward with it.
9113 assert_eq!(msg.channel_id, open_chan_msg.temporary_channel_id);
9114 assert_eq!(node_id, nodes[0].node.get_our_node_id());
9116 _ => panic!("Unexpected event"),
9120 // Now try to create a second channel which has a duplicate funding output.
9121 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
9122 let open_chan_2_msg = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
9123 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_chan_2_msg);
9124 nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id()));
9125 create_funding_transaction(&nodes[0], 100000, 42); // Get and check the FundingGenerationReady event
9127 let funding_created = {
9128 let mut a_channel_lock = nodes[0].node.channel_state.lock().unwrap();
9129 let mut as_chan = a_channel_lock.by_id.get_mut(&open_chan_2_msg.temporary_channel_id).unwrap();
9130 let logger = test_utils::TestLogger::new();
9131 as_chan.get_outbound_funding_created(tx.clone(), funding_outpoint, &&logger).unwrap()
9133 check_added_monitors!(nodes[0], 0);
9134 nodes[1].node.handle_funding_created(&nodes[0].node.get_our_node_id(), &funding_created);
9135 // At this point we'll try to add a duplicate channel monitor, which will be rejected, but
9136 // still needs to be cleared here.
9137 check_added_monitors!(nodes[1], 1);
9139 // ...still, nodes[1] will reject the duplicate channel.
9141 let events = nodes[1].node.get_and_clear_pending_msg_events();
9142 assert_eq!(events.len(), 1);
9144 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
9145 // Technically, at this point, nodes[1] would be justified in thinking both
9146 // channels are closed, but currently we do not, so we just move forward with it.
9147 assert_eq!(msg.channel_id, channel_id);
9148 assert_eq!(node_id, nodes[0].node.get_our_node_id());
9150 _ => panic!("Unexpected event"),
9154 // finally, finish creating the original channel and send a payment over it to make sure
9155 // everything is functional.
9156 nodes[0].node.handle_funding_signed(&nodes[1].node.get_our_node_id(), &funding_signed_msg);
9158 let mut added_monitors = nodes[0].chain_monitor.added_monitors.lock().unwrap();
9159 assert_eq!(added_monitors.len(), 1);
9160 assert_eq!(added_monitors[0].0, funding_output);
9161 added_monitors.clear();
9164 let events_4 = nodes[0].node.get_and_clear_pending_events();
9165 assert_eq!(events_4.len(), 0);
9166 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
9167 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap()[0].txid(), funding_output.txid);
9169 let (funding_locked, _) = create_chan_between_nodes_with_value_confirm(&nodes[0], &nodes[1], &tx);
9170 let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_locked);
9171 update_nodes_with_chan_announce(&nodes, 0, 1, &announcement, &as_update, &bs_update);
9172 send_payment(&nodes[0], &[&nodes[1]], 8000000);
9176 fn test_error_chans_closed() {
9177 // Test that we properly handle error messages, closing appropriate channels.
9179 // Prior to #787 we'd allow a peer to make us force-close a channel we had with a different
9180 // peer. The "real" fix for that is to index channels with peers_ids, however in the mean time
9181 // we can test various edge cases around it to ensure we don't regress.
9182 let chanmon_cfgs = create_chanmon_cfgs(3);
9183 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
9184 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
9185 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
9187 // Create some initial channels
9188 let chan_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001, InitFeatures::known(), InitFeatures::known());
9189 let chan_2 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001, InitFeatures::known(), InitFeatures::known());
9190 let chan_3 = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001, InitFeatures::known(), InitFeatures::known());
9192 assert_eq!(nodes[0].node.list_usable_channels().len(), 3);
9193 assert_eq!(nodes[1].node.list_usable_channels().len(), 2);
9194 assert_eq!(nodes[2].node.list_usable_channels().len(), 1);
9196 // Closing a channel from a different peer has no effect
9197 nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msgs::ErrorMessage { channel_id: chan_3.2, data: "ERR".to_owned() });
9198 assert_eq!(nodes[0].node.list_usable_channels().len(), 3);
9200 // Closing one channel doesn't impact others
9201 nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msgs::ErrorMessage { channel_id: chan_2.2, data: "ERR".to_owned() });
9202 check_added_monitors!(nodes[0], 1);
9203 check_closed_broadcast!(nodes[0], false);
9204 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0).len(), 1);
9205 assert_eq!(nodes[0].node.list_usable_channels().len(), 2);
9206 assert!(nodes[0].node.list_usable_channels()[0].channel_id == chan_1.2 || nodes[0].node.list_usable_channels()[1].channel_id == chan_1.2);
9207 assert!(nodes[0].node.list_usable_channels()[0].channel_id == chan_3.2 || nodes[0].node.list_usable_channels()[1].channel_id == chan_3.2);
9209 // A null channel ID should close all channels
9210 let _chan_4 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001, InitFeatures::known(), InitFeatures::known());
9211 nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msgs::ErrorMessage { channel_id: [0; 32], data: "ERR".to_owned() });
9212 check_added_monitors!(nodes[0], 2);
9213 let events = nodes[0].node.get_and_clear_pending_msg_events();
9214 assert_eq!(events.len(), 2);
9216 MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
9217 assert_eq!(msg.contents.flags & 2, 2);
9219 _ => panic!("Unexpected event"),
9222 MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
9223 assert_eq!(msg.contents.flags & 2, 2);
9225 _ => panic!("Unexpected event"),
9227 // Note that at this point users of a standard PeerHandler will end up calling
9228 // peer_disconnected with no_connection_possible set to false, duplicating the
9229 // close-all-channels logic. That's OK, we don't want to end up not force-closing channels for
9230 // users with their own peer handling logic. We duplicate the call here, however.
9231 assert_eq!(nodes[0].node.list_usable_channels().len(), 1);
9232 assert!(nodes[0].node.list_usable_channels()[0].channel_id == chan_3.2);
9234 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), true);
9235 assert_eq!(nodes[0].node.list_usable_channels().len(), 1);
9236 assert!(nodes[0].node.list_usable_channels()[0].channel_id == chan_3.2);
9240 fn test_invalid_funding_tx() {
9241 // Test that we properly handle invalid funding transactions sent to us from a peer.
9243 // Previously, all other major lightning implementations had failed to properly sanitize
9244 // funding transactions from their counterparties, leading to a multi-implementation critical
9245 // security vulnerability (though we always sanitized properly, we've previously had
9246 // un-released crashes in the sanitization process).
9247 let chanmon_cfgs = create_chanmon_cfgs(2);
9248 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
9249 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
9250 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
9252 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100_000, 10_000, 42, None).unwrap();
9253 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id()));
9254 nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id()));
9256 let (temporary_channel_id, mut tx, _) = create_funding_transaction(&nodes[0], 100_000, 42);
9257 for output in tx.output.iter_mut() {
9258 // Make the confirmed funding transaction have a bogus script_pubkey
9259 output.script_pubkey = bitcoin::Script::new();
9262 nodes[0].node.funding_transaction_generated_unchecked(&temporary_channel_id, tx.clone(), 0).unwrap();
9263 nodes[1].node.handle_funding_created(&nodes[0].node.get_our_node_id(), &get_event_msg!(nodes[0], MessageSendEvent::SendFundingCreated, nodes[1].node.get_our_node_id()));
9264 check_added_monitors!(nodes[1], 1);
9266 nodes[0].node.handle_funding_signed(&nodes[1].node.get_our_node_id(), &get_event_msg!(nodes[1], MessageSendEvent::SendFundingSigned, nodes[0].node.get_our_node_id()));
9267 check_added_monitors!(nodes[0], 1);
9269 let events_1 = nodes[0].node.get_and_clear_pending_events();
9270 assert_eq!(events_1.len(), 0);
9272 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
9273 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap()[0], tx);
9274 nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
9276 confirm_transaction_at(&nodes[1], &tx, 1);
9277 check_added_monitors!(nodes[1], 1);
9278 let events_2 = nodes[1].node.get_and_clear_pending_msg_events();
9279 assert_eq!(events_2.len(), 1);
9280 if let MessageSendEvent::HandleError { node_id, action } = &events_2[0] {
9281 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
9282 if let msgs::ErrorAction::SendErrorMessage { msg } = action {
9283 assert_eq!(msg.data, "funding tx had wrong script/value or output index");
9284 } else { panic!(); }
9285 } else { panic!(); }
9286 assert_eq!(nodes[1].node.list_channels().len(), 0);