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::channel::{COMMITMENT_TX_BASE_WEIGHT, COMMITMENT_TX_WEIGHT_PER_HTLC};
22 use ln::channelmanager::{ChannelManager, ChannelManagerReadArgs, RAACommitmentOrder, PaymentPreimage, PaymentHash, PaymentSendFailure, BREAKDOWN_TIMEOUT};
23 use ln::channel::{Channel, ChannelError};
24 use ln::{chan_utils, onion_utils};
25 use routing::router::{Route, RouteHop, get_route};
26 use ln::features::{ChannelFeatures, InitFeatures, InvoiceFeatures, NodeFeatures};
28 use ln::msgs::{ChannelMessageHandler,RoutingMessageHandler,HTLCFailChannelUpdate, ErrorAction};
29 use util::enforcing_trait_impls::EnforcingSigner;
30 use util::{byte_utils, test_utils};
31 use util::events::{Event, EventsProvider, MessageSendEvent, MessageSendEventsProvider};
32 use util::errors::APIError;
33 use util::ser::{Writeable, ReadableArgs};
34 use util::config::UserConfig;
36 use bitcoin::hashes::sha256d::Hash as Sha256dHash;
37 use bitcoin::hash_types::{Txid, BlockHash};
38 use bitcoin::blockdata::block::{Block, BlockHeader};
39 use bitcoin::blockdata::script::Builder;
40 use bitcoin::blockdata::opcodes;
41 use bitcoin::blockdata::constants::genesis_block;
42 use bitcoin::network::constants::Network;
44 use bitcoin::hashes::sha256::Hash as Sha256;
45 use bitcoin::hashes::Hash;
47 use bitcoin::secp256k1::{Secp256k1, Message};
48 use bitcoin::secp256k1::key::{PublicKey,SecretKey};
52 use std::collections::{BTreeSet, HashMap, HashSet};
53 use std::default::Default;
56 use ln::functional_test_utils::*;
57 use ln::chan_utils::CommitmentTransaction;
58 use ln::msgs::OptionalField::Present;
61 fn test_insane_channel_opens() {
62 // Stand up a network of 2 nodes
63 let chanmon_cfgs = create_chanmon_cfgs(2);
64 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
65 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
66 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
68 // Instantiate channel parameters where we push the maximum msats given our
70 let channel_value_sat = 31337; // same as funding satoshis
71 let channel_reserve_satoshis = Channel::<EnforcingSigner>::get_holder_selected_channel_reserve_satoshis(channel_value_sat);
72 let push_msat = (channel_value_sat - channel_reserve_satoshis) * 1000;
74 // Have node0 initiate a channel to node1 with aforementioned parameters
75 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_sat, push_msat, 42, None).unwrap();
77 // Extract the channel open message from node0 to node1
78 let open_channel_message = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
80 // Test helper that asserts we get the correct error string given a mutator
81 // that supposedly makes the channel open message insane
82 let insane_open_helper = |expected_error_str: &str, message_mutator: fn(msgs::OpenChannel) -> msgs::OpenChannel| {
83 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &message_mutator(open_channel_message.clone()));
84 let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
85 assert_eq!(msg_events.len(), 1);
86 let expected_regex = regex::Regex::new(expected_error_str).unwrap();
87 if let MessageSendEvent::HandleError { ref action, .. } = msg_events[0] {
89 &ErrorAction::SendErrorMessage { .. } => {
90 nodes[1].logger.assert_log_regex("lightning::ln::channelmanager".to_string(), expected_regex, 1);
92 _ => panic!("unexpected event!"),
94 } else { assert!(false); }
97 use ln::channel::MAX_FUNDING_SATOSHIS;
98 use ln::channelmanager::MAX_LOCAL_BREAKDOWN_TIMEOUT;
100 // Test all mutations that would make the channel open message insane
101 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 });
103 insane_open_helper("Bogus channel_reserve_satoshis", |mut msg| { msg.channel_reserve_satoshis = msg.funding_satoshis + 1; msg });
105 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 });
107 insane_open_helper("Peer never wants payout outputs?", |mut msg| { msg.dust_limit_satoshis = msg.funding_satoshis + 1 ; msg });
109 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 });
111 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 });
113 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 });
115 insane_open_helper("0 max_accepted_htlcs makes for a useless channel", |mut msg| { msg.max_accepted_htlcs = 0; msg });
117 insane_open_helper("max_accepted_htlcs was 484. It must not be larger than 483", |mut msg| { msg.max_accepted_htlcs = 484; msg });
121 fn test_async_inbound_update_fee() {
122 let chanmon_cfgs = create_chanmon_cfgs(2);
123 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
124 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
125 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
126 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
127 let logger = test_utils::TestLogger::new();
128 let channel_id = chan.2;
131 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
135 // send (1) commitment_signed -.
136 // <- update_add_htlc/commitment_signed
137 // send (2) RAA (awaiting remote revoke) -.
138 // (1) commitment_signed is delivered ->
139 // .- send (3) RAA (awaiting remote revoke)
140 // (2) RAA is delivered ->
141 // .- send (4) commitment_signed
142 // <- (3) RAA is delivered
143 // send (5) commitment_signed -.
144 // <- (4) commitment_signed is delivered
146 // (5) commitment_signed is delivered ->
148 // (6) RAA is delivered ->
150 // First nodes[0] generates an update_fee
151 nodes[0].node.update_fee(channel_id, get_feerate!(nodes[0], channel_id) + 20).unwrap();
152 check_added_monitors!(nodes[0], 1);
154 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
155 assert_eq!(events_0.len(), 1);
156 let (update_msg, commitment_signed) = match events_0[0] { // (1)
157 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
158 (update_fee.as_ref(), commitment_signed)
160 _ => panic!("Unexpected event"),
163 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
165 // ...but before it's delivered, nodes[1] starts to send a payment back to nodes[0]...
166 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[0]);
167 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
168 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();
169 check_added_monitors!(nodes[1], 1);
171 let payment_event = {
172 let mut events_1 = nodes[1].node.get_and_clear_pending_msg_events();
173 assert_eq!(events_1.len(), 1);
174 SendEvent::from_event(events_1.remove(0))
176 assert_eq!(payment_event.node_id, nodes[0].node.get_our_node_id());
177 assert_eq!(payment_event.msgs.len(), 1);
179 // ...now when the messages get delivered everyone should be happy
180 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]);
181 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg); // (2)
182 let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
183 // nodes[0] is awaiting nodes[1] revoke_and_ack so get_event_msg's assert(len == 1) passes
184 check_added_monitors!(nodes[0], 1);
186 // deliver(1), generate (3):
187 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
188 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
189 // nodes[1] is awaiting nodes[0] revoke_and_ack so get_event_msg's assert(len == 1) passes
190 check_added_monitors!(nodes[1], 1);
192 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack); // deliver (2)
193 let bs_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
194 assert!(bs_update.update_add_htlcs.is_empty()); // (4)
195 assert!(bs_update.update_fulfill_htlcs.is_empty()); // (4)
196 assert!(bs_update.update_fail_htlcs.is_empty()); // (4)
197 assert!(bs_update.update_fail_malformed_htlcs.is_empty()); // (4)
198 assert!(bs_update.update_fee.is_none()); // (4)
199 check_added_monitors!(nodes[1], 1);
201 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack); // deliver (3)
202 let as_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
203 assert!(as_update.update_add_htlcs.is_empty()); // (5)
204 assert!(as_update.update_fulfill_htlcs.is_empty()); // (5)
205 assert!(as_update.update_fail_htlcs.is_empty()); // (5)
206 assert!(as_update.update_fail_malformed_htlcs.is_empty()); // (5)
207 assert!(as_update.update_fee.is_none()); // (5)
208 check_added_monitors!(nodes[0], 1);
210 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_update.commitment_signed); // deliver (4)
211 let as_second_revoke = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
212 // only (6) so get_event_msg's assert(len == 1) passes
213 check_added_monitors!(nodes[0], 1);
215 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_update.commitment_signed); // deliver (5)
216 let bs_second_revoke = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
217 check_added_monitors!(nodes[1], 1);
219 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke);
220 check_added_monitors!(nodes[0], 1);
222 let events_2 = nodes[0].node.get_and_clear_pending_events();
223 assert_eq!(events_2.len(), 1);
225 Event::PendingHTLCsForwardable {..} => {}, // If we actually processed we'd receive the payment
226 _ => panic!("Unexpected event"),
229 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_second_revoke); // deliver (6)
230 check_added_monitors!(nodes[1], 1);
234 fn test_update_fee_unordered_raa() {
235 // Just the intro to the previous test followed by an out-of-order RAA (which caused a
236 // crash in an earlier version of the update_fee patch)
237 let chanmon_cfgs = create_chanmon_cfgs(2);
238 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
239 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
240 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
241 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
242 let channel_id = chan.2;
243 let logger = test_utils::TestLogger::new();
246 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
248 // First nodes[0] generates an update_fee
249 nodes[0].node.update_fee(channel_id, get_feerate!(nodes[0], channel_id) + 20).unwrap();
250 check_added_monitors!(nodes[0], 1);
252 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
253 assert_eq!(events_0.len(), 1);
254 let update_msg = match events_0[0] { // (1)
255 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, .. }, .. } => {
258 _ => panic!("Unexpected event"),
261 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
263 // ...but before it's delivered, nodes[1] starts to send a payment back to nodes[0]...
264 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[0]);
265 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
266 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();
267 check_added_monitors!(nodes[1], 1);
269 let payment_event = {
270 let mut events_1 = nodes[1].node.get_and_clear_pending_msg_events();
271 assert_eq!(events_1.len(), 1);
272 SendEvent::from_event(events_1.remove(0))
274 assert_eq!(payment_event.node_id, nodes[0].node.get_our_node_id());
275 assert_eq!(payment_event.msgs.len(), 1);
277 // ...now when the messages get delivered everyone should be happy
278 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]);
279 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg); // (2)
280 let as_revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
281 // nodes[0] is awaiting nodes[1] revoke_and_ack so get_event_msg's assert(len == 1) passes
282 check_added_monitors!(nodes[0], 1);
284 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_msg); // deliver (2)
285 check_added_monitors!(nodes[1], 1);
287 // We can't continue, sadly, because our (1) now has a bogus signature
291 fn test_multi_flight_update_fee() {
292 let chanmon_cfgs = create_chanmon_cfgs(2);
293 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
294 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
295 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
296 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
297 let channel_id = chan.2;
300 // update_fee/commitment_signed ->
301 // .- send (1) RAA and (2) commitment_signed
302 // update_fee (never committed) ->
304 // We have to manually generate the above update_fee, it is allowed by the protocol but we
305 // don't track which updates correspond to which revoke_and_ack responses so we're in
306 // AwaitingRAA mode and will not generate the update_fee yet.
307 // <- (1) RAA delivered
308 // (3) is generated and send (4) CS -.
309 // Note that A cannot generate (4) prior to (1) being delivered as it otherwise doesn't
310 // know the per_commitment_point to use for it.
311 // <- (2) commitment_signed delivered
313 // B should send no response here
314 // (4) commitment_signed delivered ->
315 // <- RAA/commitment_signed delivered
318 // First nodes[0] generates an update_fee
319 let initial_feerate = get_feerate!(nodes[0], channel_id);
320 nodes[0].node.update_fee(channel_id, initial_feerate + 20).unwrap();
321 check_added_monitors!(nodes[0], 1);
323 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
324 assert_eq!(events_0.len(), 1);
325 let (update_msg_1, commitment_signed_1) = match events_0[0] { // (1)
326 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
327 (update_fee.as_ref().unwrap(), commitment_signed)
329 _ => panic!("Unexpected event"),
332 // Deliver first update_fee/commitment_signed pair, generating (1) and (2):
333 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg_1);
334 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed_1);
335 let (bs_revoke_msg, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
336 check_added_monitors!(nodes[1], 1);
338 // nodes[0] is awaiting a revoke from nodes[1] before it will create a new commitment
340 nodes[0].node.update_fee(channel_id, initial_feerate + 40).unwrap();
341 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
342 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
344 // Create the (3) update_fee message that nodes[0] will generate before it does...
345 let mut update_msg_2 = msgs::UpdateFee {
346 channel_id: update_msg_1.channel_id.clone(),
347 feerate_per_kw: (initial_feerate + 30) as u32,
350 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg_2);
352 update_msg_2.feerate_per_kw = (initial_feerate + 40) as u32;
354 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg_2);
356 // Deliver (1), generating (3) and (4)
357 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_msg);
358 let as_second_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
359 check_added_monitors!(nodes[0], 1);
360 assert!(as_second_update.update_add_htlcs.is_empty());
361 assert!(as_second_update.update_fulfill_htlcs.is_empty());
362 assert!(as_second_update.update_fail_htlcs.is_empty());
363 assert!(as_second_update.update_fail_malformed_htlcs.is_empty());
364 // Check that the update_fee newly generated matches what we delivered:
365 assert_eq!(as_second_update.update_fee.as_ref().unwrap().channel_id, update_msg_2.channel_id);
366 assert_eq!(as_second_update.update_fee.as_ref().unwrap().feerate_per_kw, update_msg_2.feerate_per_kw);
368 // Deliver (2) commitment_signed
369 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_commitment_signed);
370 let as_revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
371 check_added_monitors!(nodes[0], 1);
372 // No commitment_signed so get_event_msg's assert(len == 1) passes
374 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_msg);
375 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
376 check_added_monitors!(nodes[1], 1);
379 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_second_update.commitment_signed);
380 let (bs_second_revoke, bs_second_commitment) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
381 check_added_monitors!(nodes[1], 1);
383 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke);
384 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
385 check_added_monitors!(nodes[0], 1);
387 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_commitment);
388 let as_second_revoke = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
389 // No commitment_signed so get_event_msg's assert(len == 1) passes
390 check_added_monitors!(nodes[0], 1);
392 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_second_revoke);
393 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
394 check_added_monitors!(nodes[1], 1);
397 fn do_test_1_conf_open(connect_style: ConnectStyle) {
398 // Previously, if the minium_depth config was set to 1, we'd never send a funding_locked. This
399 // tests that we properly send one in that case.
400 let mut alice_config = UserConfig::default();
401 alice_config.own_channel_config.minimum_depth = 1;
402 alice_config.channel_options.announced_channel = true;
403 alice_config.peer_channel_config_limits.force_announced_channel_preference = false;
404 let mut bob_config = UserConfig::default();
405 bob_config.own_channel_config.minimum_depth = 1;
406 bob_config.channel_options.announced_channel = true;
407 bob_config.peer_channel_config_limits.force_announced_channel_preference = false;
408 let chanmon_cfgs = create_chanmon_cfgs(2);
409 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
410 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[Some(alice_config), Some(bob_config)]);
411 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
412 *nodes[0].connect_style.borrow_mut() = connect_style;
414 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001, InitFeatures::known(), InitFeatures::known());
415 mine_transaction(&nodes[1], &tx);
416 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()));
418 mine_transaction(&nodes[0], &tx);
419 let (funding_locked, _) = create_chan_between_nodes_with_value_confirm_second(&nodes[1], &nodes[0]);
420 let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_locked);
423 assert!(node.net_graph_msg_handler.handle_channel_announcement(&announcement).unwrap());
424 node.net_graph_msg_handler.handle_channel_update(&as_update).unwrap();
425 node.net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
429 fn test_1_conf_open() {
430 do_test_1_conf_open(ConnectStyle::BestBlockFirst);
431 do_test_1_conf_open(ConnectStyle::TransactionsFirst);
432 do_test_1_conf_open(ConnectStyle::FullBlockViaListen);
435 fn do_test_sanity_on_in_flight_opens(steps: u8) {
436 // Previously, we had issues deserializing channels when we hadn't connected the first block
437 // after creation. To catch that and similar issues, we lean on the Node::drop impl to test
438 // serialization round-trips and simply do steps towards opening a channel and then drop the
441 let chanmon_cfgs = create_chanmon_cfgs(2);
442 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
443 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
444 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
446 if steps & 0b1000_0000 != 0{
448 header: BlockHeader { version: 0x20000000, prev_blockhash: nodes[0].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
451 connect_block(&nodes[0], &block);
452 connect_block(&nodes[1], &block);
455 if steps & 0x0f == 0 { return; }
456 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
457 let open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
459 if steps & 0x0f == 1 { return; }
460 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_channel);
461 let accept_channel = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
463 if steps & 0x0f == 2 { return; }
464 nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &accept_channel);
466 let (temporary_channel_id, tx, funding_output) = create_funding_transaction(&nodes[0], 100000, 42);
468 if steps & 0x0f == 3 { return; }
469 nodes[0].node.funding_transaction_generated(&temporary_channel_id, tx.clone()).unwrap();
470 check_added_monitors!(nodes[0], 0);
471 let funding_created = get_event_msg!(nodes[0], MessageSendEvent::SendFundingCreated, nodes[1].node.get_our_node_id());
473 if steps & 0x0f == 4 { return; }
474 nodes[1].node.handle_funding_created(&nodes[0].node.get_our_node_id(), &funding_created);
476 let mut added_monitors = nodes[1].chain_monitor.added_monitors.lock().unwrap();
477 assert_eq!(added_monitors.len(), 1);
478 assert_eq!(added_monitors[0].0, funding_output);
479 added_monitors.clear();
481 let funding_signed = get_event_msg!(nodes[1], MessageSendEvent::SendFundingSigned, nodes[0].node.get_our_node_id());
483 if steps & 0x0f == 5 { return; }
484 nodes[0].node.handle_funding_signed(&nodes[1].node.get_our_node_id(), &funding_signed);
486 let mut added_monitors = nodes[0].chain_monitor.added_monitors.lock().unwrap();
487 assert_eq!(added_monitors.len(), 1);
488 assert_eq!(added_monitors[0].0, funding_output);
489 added_monitors.clear();
492 let events_4 = nodes[0].node.get_and_clear_pending_events();
493 assert_eq!(events_4.len(), 0);
495 if steps & 0x0f == 6 { return; }
496 create_chan_between_nodes_with_value_confirm_first(&nodes[0], &nodes[1], &tx, 2);
498 if steps & 0x0f == 7 { return; }
499 confirm_transaction_at(&nodes[0], &tx, 2);
500 connect_blocks(&nodes[0], CHAN_CONFIRM_DEPTH);
501 create_chan_between_nodes_with_value_confirm_second(&nodes[1], &nodes[0]);
505 fn test_sanity_on_in_flight_opens() {
506 do_test_sanity_on_in_flight_opens(0);
507 do_test_sanity_on_in_flight_opens(0 | 0b1000_0000);
508 do_test_sanity_on_in_flight_opens(1);
509 do_test_sanity_on_in_flight_opens(1 | 0b1000_0000);
510 do_test_sanity_on_in_flight_opens(2);
511 do_test_sanity_on_in_flight_opens(2 | 0b1000_0000);
512 do_test_sanity_on_in_flight_opens(3);
513 do_test_sanity_on_in_flight_opens(3 | 0b1000_0000);
514 do_test_sanity_on_in_flight_opens(4);
515 do_test_sanity_on_in_flight_opens(4 | 0b1000_0000);
516 do_test_sanity_on_in_flight_opens(5);
517 do_test_sanity_on_in_flight_opens(5 | 0b1000_0000);
518 do_test_sanity_on_in_flight_opens(6);
519 do_test_sanity_on_in_flight_opens(6 | 0b1000_0000);
520 do_test_sanity_on_in_flight_opens(7);
521 do_test_sanity_on_in_flight_opens(7 | 0b1000_0000);
522 do_test_sanity_on_in_flight_opens(8);
523 do_test_sanity_on_in_flight_opens(8 | 0b1000_0000);
527 fn test_update_fee_vanilla() {
528 let chanmon_cfgs = create_chanmon_cfgs(2);
529 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
530 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
531 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
532 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
533 let channel_id = chan.2;
535 let feerate = get_feerate!(nodes[0], channel_id);
536 nodes[0].node.update_fee(channel_id, feerate+25).unwrap();
537 check_added_monitors!(nodes[0], 1);
539 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
540 assert_eq!(events_0.len(), 1);
541 let (update_msg, commitment_signed) = match events_0[0] {
542 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 } } => {
543 (update_fee.as_ref(), commitment_signed)
545 _ => panic!("Unexpected event"),
547 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
549 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
550 let (revoke_msg, commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
551 check_added_monitors!(nodes[1], 1);
553 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg);
554 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
555 check_added_monitors!(nodes[0], 1);
557 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed);
558 let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
559 // No commitment_signed so get_event_msg's assert(len == 1) passes
560 check_added_monitors!(nodes[0], 1);
562 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg);
563 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
564 check_added_monitors!(nodes[1], 1);
568 fn test_update_fee_that_funder_cannot_afford() {
569 let chanmon_cfgs = create_chanmon_cfgs(2);
570 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
571 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
572 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
573 let channel_value = 1888;
574 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, channel_value, 700000, InitFeatures::known(), InitFeatures::known());
575 let channel_id = chan.2;
578 nodes[0].node.update_fee(channel_id, feerate).unwrap();
579 check_added_monitors!(nodes[0], 1);
580 let update_msg = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
582 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg.update_fee.unwrap());
584 commitment_signed_dance!(nodes[1], nodes[0], update_msg.commitment_signed, false);
586 //Confirm that the new fee based on the last local commitment txn is what we expected based on the feerate of 260 set above.
587 //This value results in a fee that is exactly what the funder can afford (277 sat + 1000 sat channel reserve)
589 let commitment_tx = get_local_commitment_txn!(nodes[1], channel_id)[0].clone();
591 //We made sure neither party's funds are below the dust limit so -2 non-HTLC txns from number of outputs
592 let num_htlcs = commitment_tx.output.len() - 2;
593 let total_fee: u64 = feerate as u64 * (COMMITMENT_TX_BASE_WEIGHT + (num_htlcs as u64) * COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000;
594 let mut actual_fee = commitment_tx.output.iter().fold(0, |acc, output| acc + output.value);
595 actual_fee = channel_value - actual_fee;
596 assert_eq!(total_fee, actual_fee);
599 //Add 2 to the previous fee rate to the final fee increases by 1 (with no HTLCs the fee is essentially
600 //fee_rate*(724/1000) so the increment of 1*0.724 is rounded back down)
601 nodes[0].node.update_fee(channel_id, feerate+2).unwrap();
602 check_added_monitors!(nodes[0], 1);
604 let update2_msg = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
606 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update2_msg.update_fee.unwrap());
608 //While producing the commitment_signed response after handling a received update_fee request the
609 //check to see if the funder, who sent the update_fee request, can afford the new fee (funder_balance >= fee+channel_reserve)
610 //Should produce and error.
611 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &update2_msg.commitment_signed);
612 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Funding remote cannot afford proposed new fee".to_string(), 1);
613 check_added_monitors!(nodes[1], 1);
614 check_closed_broadcast!(nodes[1], true);
618 fn test_update_fee_with_fundee_update_add_htlc() {
619 let chanmon_cfgs = create_chanmon_cfgs(2);
620 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
621 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
622 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
623 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
624 let channel_id = chan.2;
625 let logger = test_utils::TestLogger::new();
628 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
630 let feerate = get_feerate!(nodes[0], channel_id);
631 nodes[0].node.update_fee(channel_id, feerate+20).unwrap();
632 check_added_monitors!(nodes[0], 1);
634 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
635 assert_eq!(events_0.len(), 1);
636 let (update_msg, commitment_signed) = match events_0[0] {
637 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 } } => {
638 (update_fee.as_ref(), commitment_signed)
640 _ => panic!("Unexpected event"),
642 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
643 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
644 let (revoke_msg, commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
645 check_added_monitors!(nodes[1], 1);
647 let (our_payment_preimage, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[0]);
648 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
649 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();
651 // nothing happens since node[1] is in AwaitingRemoteRevoke
652 nodes[1].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
654 let mut added_monitors = nodes[0].chain_monitor.added_monitors.lock().unwrap();
655 assert_eq!(added_monitors.len(), 0);
656 added_monitors.clear();
658 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
659 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
660 // node[1] has nothing to do
662 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg);
663 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
664 check_added_monitors!(nodes[0], 1);
666 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed);
667 let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
668 // No commitment_signed so get_event_msg's assert(len == 1) passes
669 check_added_monitors!(nodes[0], 1);
670 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg);
671 check_added_monitors!(nodes[1], 1);
672 // AwaitingRemoteRevoke ends here
674 let commitment_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
675 assert_eq!(commitment_update.update_add_htlcs.len(), 1);
676 assert_eq!(commitment_update.update_fulfill_htlcs.len(), 0);
677 assert_eq!(commitment_update.update_fail_htlcs.len(), 0);
678 assert_eq!(commitment_update.update_fail_malformed_htlcs.len(), 0);
679 assert_eq!(commitment_update.update_fee.is_none(), true);
681 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &commitment_update.update_add_htlcs[0]);
682 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_update.commitment_signed);
683 check_added_monitors!(nodes[0], 1);
684 let (revoke, commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
686 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke);
687 check_added_monitors!(nodes[1], 1);
688 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
690 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &commitment_signed);
691 check_added_monitors!(nodes[1], 1);
692 let revoke = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
693 // No commitment_signed so get_event_msg's assert(len == 1) passes
695 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke);
696 check_added_monitors!(nodes[0], 1);
697 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
699 expect_pending_htlcs_forwardable!(nodes[0]);
701 let events = nodes[0].node.get_and_clear_pending_events();
702 assert_eq!(events.len(), 1);
704 Event::PaymentReceived { .. } => { },
705 _ => panic!("Unexpected event"),
708 claim_payment(&nodes[1], &vec!(&nodes[0])[..], our_payment_preimage, 800_000);
710 send_payment(&nodes[1], &vec!(&nodes[0])[..], 800000, 800_000);
711 send_payment(&nodes[0], &vec!(&nodes[1])[..], 800000, 800_000);
712 close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true);
716 fn test_update_fee() {
717 let chanmon_cfgs = create_chanmon_cfgs(2);
718 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
719 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
720 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
721 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
722 let channel_id = chan.2;
725 // (1) update_fee/commitment_signed ->
726 // <- (2) revoke_and_ack
727 // .- send (3) commitment_signed
728 // (4) update_fee/commitment_signed ->
729 // .- send (5) revoke_and_ack (no CS as we're awaiting a revoke)
730 // <- (3) commitment_signed delivered
731 // send (6) revoke_and_ack -.
732 // <- (5) deliver revoke_and_ack
733 // (6) deliver revoke_and_ack ->
734 // .- send (7) commitment_signed in response to (4)
735 // <- (7) deliver commitment_signed
738 // Create and deliver (1)...
739 let feerate = get_feerate!(nodes[0], channel_id);
740 nodes[0].node.update_fee(channel_id, feerate+20).unwrap();
741 check_added_monitors!(nodes[0], 1);
743 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
744 assert_eq!(events_0.len(), 1);
745 let (update_msg, commitment_signed) = match events_0[0] {
746 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 } } => {
747 (update_fee.as_ref(), commitment_signed)
749 _ => panic!("Unexpected event"),
751 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
753 // Generate (2) and (3):
754 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
755 let (revoke_msg, commitment_signed_0) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
756 check_added_monitors!(nodes[1], 1);
759 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg);
760 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
761 check_added_monitors!(nodes[0], 1);
763 // Create and deliver (4)...
764 nodes[0].node.update_fee(channel_id, feerate+30).unwrap();
765 check_added_monitors!(nodes[0], 1);
766 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
767 assert_eq!(events_0.len(), 1);
768 let (update_msg, commitment_signed) = match events_0[0] {
769 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 } } => {
770 (update_fee.as_ref(), commitment_signed)
772 _ => panic!("Unexpected event"),
775 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
776 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
777 check_added_monitors!(nodes[1], 1);
779 let revoke_msg = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
780 // No commitment_signed so get_event_msg's assert(len == 1) passes
782 // Handle (3), creating (6):
783 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed_0);
784 check_added_monitors!(nodes[0], 1);
785 let revoke_msg_0 = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
786 // No commitment_signed so get_event_msg's assert(len == 1) passes
789 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg);
790 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
791 check_added_monitors!(nodes[0], 1);
793 // Deliver (6), creating (7):
794 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg_0);
795 let commitment_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
796 assert!(commitment_update.update_add_htlcs.is_empty());
797 assert!(commitment_update.update_fulfill_htlcs.is_empty());
798 assert!(commitment_update.update_fail_htlcs.is_empty());
799 assert!(commitment_update.update_fail_malformed_htlcs.is_empty());
800 assert!(commitment_update.update_fee.is_none());
801 check_added_monitors!(nodes[1], 1);
804 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_update.commitment_signed);
805 check_added_monitors!(nodes[0], 1);
806 let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
807 // No commitment_signed so get_event_msg's assert(len == 1) passes
809 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg);
810 check_added_monitors!(nodes[1], 1);
811 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
813 assert_eq!(get_feerate!(nodes[0], channel_id), feerate + 30);
814 assert_eq!(get_feerate!(nodes[1], channel_id), feerate + 30);
815 close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true);
819 fn pre_funding_lock_shutdown_test() {
820 // Test sending a shutdown prior to funding_locked after funding generation
821 let chanmon_cfgs = create_chanmon_cfgs(2);
822 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
823 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
824 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
825 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 8000000, 0, InitFeatures::known(), InitFeatures::known());
826 mine_transaction(&nodes[0], &tx);
827 mine_transaction(&nodes[1], &tx);
829 nodes[0].node.close_channel(&OutPoint { txid: tx.txid(), index: 0 }.to_channel_id()).unwrap();
830 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
831 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
832 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
833 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown);
835 let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
836 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
837 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
838 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap());
839 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
840 assert!(node_0_none.is_none());
842 assert!(nodes[0].node.list_channels().is_empty());
843 assert!(nodes[1].node.list_channels().is_empty());
847 fn updates_shutdown_wait() {
848 // Test sending a shutdown with outstanding updates pending
849 let chanmon_cfgs = create_chanmon_cfgs(3);
850 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
851 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
852 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
853 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
854 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
855 let logger = test_utils::TestLogger::new();
857 let (our_payment_preimage, _, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000);
859 nodes[0].node.close_channel(&chan_1.2).unwrap();
860 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
861 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
862 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
863 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown);
865 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
866 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
868 let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[0]);
870 let net_graph_msg_handler0 = &nodes[0].net_graph_msg_handler;
871 let net_graph_msg_handler1 = &nodes[1].net_graph_msg_handler;
872 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();
873 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();
874 unwrap_send_err!(nodes[0].node.send_payment(&route_1, payment_hash, &Some(payment_secret)), true, APIError::ChannelUnavailable {..}, {});
875 unwrap_send_err!(nodes[1].node.send_payment(&route_2, payment_hash, &Some(payment_secret)), true, APIError::ChannelUnavailable {..}, {});
877 assert!(nodes[2].node.claim_funds(our_payment_preimage, &Some(payment_secret), 100_000));
878 check_added_monitors!(nodes[2], 1);
879 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
880 assert!(updates.update_add_htlcs.is_empty());
881 assert!(updates.update_fail_htlcs.is_empty());
882 assert!(updates.update_fail_malformed_htlcs.is_empty());
883 assert!(updates.update_fee.is_none());
884 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
885 nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
886 check_added_monitors!(nodes[1], 1);
887 let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
888 commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false);
890 assert!(updates_2.update_add_htlcs.is_empty());
891 assert!(updates_2.update_fail_htlcs.is_empty());
892 assert!(updates_2.update_fail_malformed_htlcs.is_empty());
893 assert!(updates_2.update_fee.is_none());
894 assert_eq!(updates_2.update_fulfill_htlcs.len(), 1);
895 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]);
896 commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
898 let events = nodes[0].node.get_and_clear_pending_events();
899 assert_eq!(events.len(), 1);
901 Event::PaymentSent { ref payment_preimage } => {
902 assert_eq!(our_payment_preimage, *payment_preimage);
904 _ => panic!("Unexpected event"),
907 let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
908 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
909 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
910 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap());
911 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
912 assert!(node_0_none.is_none());
914 assert!(nodes[0].node.list_channels().is_empty());
916 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
917 nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
918 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
919 assert!(nodes[1].node.list_channels().is_empty());
920 assert!(nodes[2].node.list_channels().is_empty());
924 fn htlc_fail_async_shutdown() {
925 // Test HTLCs fail if shutdown starts even if messages are delivered out-of-order
926 let chanmon_cfgs = create_chanmon_cfgs(3);
927 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
928 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
929 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
930 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
931 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
932 let logger = test_utils::TestLogger::new();
934 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[2]);
935 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
936 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();
937 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
938 check_added_monitors!(nodes[0], 1);
939 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
940 assert_eq!(updates.update_add_htlcs.len(), 1);
941 assert!(updates.update_fulfill_htlcs.is_empty());
942 assert!(updates.update_fail_htlcs.is_empty());
943 assert!(updates.update_fail_malformed_htlcs.is_empty());
944 assert!(updates.update_fee.is_none());
946 nodes[1].node.close_channel(&chan_1.2).unwrap();
947 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
948 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown);
949 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
951 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
952 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &updates.commitment_signed);
953 check_added_monitors!(nodes[1], 1);
954 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
955 commitment_signed_dance!(nodes[1], nodes[0], (), false, true, false);
957 let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
958 assert!(updates_2.update_add_htlcs.is_empty());
959 assert!(updates_2.update_fulfill_htlcs.is_empty());
960 assert_eq!(updates_2.update_fail_htlcs.len(), 1);
961 assert!(updates_2.update_fail_malformed_htlcs.is_empty());
962 assert!(updates_2.update_fee.is_none());
964 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fail_htlcs[0]);
965 commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
967 expect_payment_failed!(nodes[0], our_payment_hash, false);
969 let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
970 assert_eq!(msg_events.len(), 2);
971 let node_0_closing_signed = match msg_events[0] {
972 MessageSendEvent::SendClosingSigned { ref node_id, ref msg } => {
973 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
976 _ => panic!("Unexpected event"),
978 match msg_events[1] {
979 MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelUpdateMessage { ref msg }} => {
980 assert_eq!(msg.contents.short_channel_id, chan_1.0.contents.short_channel_id);
982 _ => panic!("Unexpected event"),
985 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
986 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
987 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
988 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap());
989 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
990 assert!(node_0_none.is_none());
992 assert!(nodes[0].node.list_channels().is_empty());
994 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
995 nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
996 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
997 assert!(nodes[1].node.list_channels().is_empty());
998 assert!(nodes[2].node.list_channels().is_empty());
1001 fn do_test_shutdown_rebroadcast(recv_count: u8) {
1002 // Test that shutdown/closing_signed is re-sent on reconnect with a variable number of
1003 // messages delivered prior to disconnect
1004 let chanmon_cfgs = create_chanmon_cfgs(3);
1005 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1006 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1007 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1008 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
1009 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
1011 let (our_payment_preimage, _, our_payment_secret) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000);
1013 nodes[1].node.close_channel(&chan_1.2).unwrap();
1014 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
1016 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown);
1017 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
1019 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
1023 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
1024 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
1026 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1027 let node_0_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
1028 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1029 let node_1_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
1031 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_reestablish);
1032 let node_1_2nd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
1033 assert!(node_1_shutdown == node_1_2nd_shutdown);
1035 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_reestablish);
1036 let node_0_2nd_shutdown = if recv_count > 0 {
1037 let node_0_2nd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
1038 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_2nd_shutdown);
1041 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1042 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_2nd_shutdown);
1043 get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id())
1045 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_2nd_shutdown);
1047 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1048 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1050 assert!(nodes[2].node.claim_funds(our_payment_preimage, &Some(our_payment_secret), 100_000));
1051 check_added_monitors!(nodes[2], 1);
1052 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
1053 assert!(updates.update_add_htlcs.is_empty());
1054 assert!(updates.update_fail_htlcs.is_empty());
1055 assert!(updates.update_fail_malformed_htlcs.is_empty());
1056 assert!(updates.update_fee.is_none());
1057 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
1058 nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
1059 check_added_monitors!(nodes[1], 1);
1060 let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1061 commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false);
1063 assert!(updates_2.update_add_htlcs.is_empty());
1064 assert!(updates_2.update_fail_htlcs.is_empty());
1065 assert!(updates_2.update_fail_malformed_htlcs.is_empty());
1066 assert!(updates_2.update_fee.is_none());
1067 assert_eq!(updates_2.update_fulfill_htlcs.len(), 1);
1068 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]);
1069 commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
1071 let events = nodes[0].node.get_and_clear_pending_events();
1072 assert_eq!(events.len(), 1);
1074 Event::PaymentSent { ref payment_preimage } => {
1075 assert_eq!(our_payment_preimage, *payment_preimage);
1077 _ => panic!("Unexpected event"),
1080 let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
1082 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
1083 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
1084 assert!(node_1_closing_signed.is_some());
1087 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
1088 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
1090 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1091 let node_0_2nd_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
1092 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1093 if recv_count == 0 {
1094 // If all closing_signeds weren't delivered we can just resume where we left off...
1095 let node_1_2nd_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
1097 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_2nd_reestablish);
1098 let node_0_3rd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
1099 assert!(node_0_2nd_shutdown == node_0_3rd_shutdown);
1101 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_2nd_reestablish);
1102 let node_1_3rd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
1103 assert!(node_1_3rd_shutdown == node_1_2nd_shutdown);
1105 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_3rd_shutdown);
1106 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1108 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_3rd_shutdown);
1109 let node_0_2nd_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
1110 assert!(node_0_closing_signed == node_0_2nd_closing_signed);
1112 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed);
1113 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
1114 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap());
1115 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
1116 assert!(node_0_none.is_none());
1118 // If one node, however, received + responded with an identical closing_signed we end
1119 // up erroring and node[0] will try to broadcast its own latest commitment transaction.
1120 // There isn't really anything better we can do simply, but in the future we might
1121 // explore storing a set of recently-closed channels that got disconnected during
1122 // closing_signed and avoiding broadcasting local commitment txn for some timeout to
1123 // give our counterparty enough time to (potentially) broadcast a cooperative closing
1125 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1127 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_2nd_reestablish);
1128 let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
1129 assert_eq!(msg_events.len(), 1);
1130 if let MessageSendEvent::HandleError { ref action, .. } = msg_events[0] {
1132 &ErrorAction::SendErrorMessage { ref msg } => {
1133 nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msg);
1134 assert_eq!(msg.channel_id, chan_1.2);
1136 _ => panic!("Unexpected event!"),
1138 } else { panic!("Needed SendErrorMessage close"); }
1140 // get_closing_signed_broadcast usually eats the BroadcastChannelUpdate for us and
1141 // checks it, but in this case nodes[0] didn't ever get a chance to receive a
1142 // closing_signed so we do it ourselves
1143 check_closed_broadcast!(nodes[0], false);
1144 check_added_monitors!(nodes[0], 1);
1147 assert!(nodes[0].node.list_channels().is_empty());
1149 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
1150 nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
1151 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
1152 assert!(nodes[1].node.list_channels().is_empty());
1153 assert!(nodes[2].node.list_channels().is_empty());
1157 fn test_shutdown_rebroadcast() {
1158 do_test_shutdown_rebroadcast(0);
1159 do_test_shutdown_rebroadcast(1);
1160 do_test_shutdown_rebroadcast(2);
1164 fn fake_network_test() {
1165 // Simple test which builds a network of ChannelManagers, connects them to each other, and
1166 // tests that payments get routed and transactions broadcast in semi-reasonable ways.
1167 let chanmon_cfgs = create_chanmon_cfgs(4);
1168 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
1169 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
1170 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
1172 // Create some initial channels
1173 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
1174 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
1175 let chan_3 = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known());
1177 // Rebalance the network a bit by relaying one payment through all the channels...
1178 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000, 8_000_000);
1179 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000, 8_000_000);
1180 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000, 8_000_000);
1181 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000, 8_000_000);
1183 // Send some more payments
1184 send_payment(&nodes[1], &vec!(&nodes[2], &nodes[3])[..], 1000000, 1_000_000);
1185 send_payment(&nodes[3], &vec!(&nodes[2], &nodes[1], &nodes[0])[..], 1000000, 1_000_000);
1186 send_payment(&nodes[3], &vec!(&nodes[2], &nodes[1])[..], 1000000, 1_000_000);
1188 // Test failure packets
1189 let payment_hash_1 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 1000000).1;
1190 fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], payment_hash_1);
1192 // Add a new channel that skips 3
1193 let chan_4 = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known());
1195 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 1000000, 1_000_000);
1196 send_payment(&nodes[2], &vec!(&nodes[3])[..], 1000000, 1_000_000);
1197 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000, 8_000_000);
1198 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000, 8_000_000);
1199 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000, 8_000_000);
1200 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000, 8_000_000);
1201 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000, 8_000_000);
1203 // Do some rebalance loop payments, simultaneously
1204 let mut hops = Vec::with_capacity(3);
1205 hops.push(RouteHop {
1206 pubkey: nodes[2].node.get_our_node_id(),
1207 node_features: NodeFeatures::empty(),
1208 short_channel_id: chan_2.0.contents.short_channel_id,
1209 channel_features: ChannelFeatures::empty(),
1211 cltv_expiry_delta: chan_3.0.contents.cltv_expiry_delta as u32
1213 hops.push(RouteHop {
1214 pubkey: nodes[3].node.get_our_node_id(),
1215 node_features: NodeFeatures::empty(),
1216 short_channel_id: chan_3.0.contents.short_channel_id,
1217 channel_features: ChannelFeatures::empty(),
1219 cltv_expiry_delta: chan_4.1.contents.cltv_expiry_delta as u32
1221 hops.push(RouteHop {
1222 pubkey: nodes[1].node.get_our_node_id(),
1223 node_features: NodeFeatures::known(),
1224 short_channel_id: chan_4.0.contents.short_channel_id,
1225 channel_features: ChannelFeatures::known(),
1227 cltv_expiry_delta: TEST_FINAL_CLTV,
1229 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;
1230 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;
1231 let payment_preimage_1 = send_along_route(&nodes[1], Route { paths: vec![hops] }, &vec!(&nodes[2], &nodes[3], &nodes[1])[..], 1000000).0;
1233 let mut hops = Vec::with_capacity(3);
1234 hops.push(RouteHop {
1235 pubkey: nodes[3].node.get_our_node_id(),
1236 node_features: NodeFeatures::empty(),
1237 short_channel_id: chan_4.0.contents.short_channel_id,
1238 channel_features: ChannelFeatures::empty(),
1240 cltv_expiry_delta: chan_3.1.contents.cltv_expiry_delta as u32
1242 hops.push(RouteHop {
1243 pubkey: nodes[2].node.get_our_node_id(),
1244 node_features: NodeFeatures::empty(),
1245 short_channel_id: chan_3.0.contents.short_channel_id,
1246 channel_features: ChannelFeatures::empty(),
1248 cltv_expiry_delta: chan_2.1.contents.cltv_expiry_delta as u32
1250 hops.push(RouteHop {
1251 pubkey: nodes[1].node.get_our_node_id(),
1252 node_features: NodeFeatures::known(),
1253 short_channel_id: chan_2.0.contents.short_channel_id,
1254 channel_features: ChannelFeatures::known(),
1256 cltv_expiry_delta: TEST_FINAL_CLTV,
1258 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;
1259 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;
1260 let payment_hash_2 = send_along_route(&nodes[1], Route { paths: vec![hops] }, &vec!(&nodes[3], &nodes[2], &nodes[1])[..], 1000000).1;
1262 // Claim the rebalances...
1263 fail_payment(&nodes[1], &vec!(&nodes[3], &nodes[2], &nodes[1])[..], payment_hash_2);
1264 claim_payment(&nodes[1], &vec!(&nodes[2], &nodes[3], &nodes[1])[..], payment_preimage_1, 1_000_000);
1266 // Add a duplicate new channel from 2 to 4
1267 let chan_5 = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known());
1269 // Send some payments across both channels
1270 let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0;
1271 let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0;
1272 let payment_preimage_5 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0;
1275 route_over_limit(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000);
1276 let events = nodes[0].node.get_and_clear_pending_msg_events();
1277 assert_eq!(events.len(), 0);
1278 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);
1280 //TODO: Test that routes work again here as we've been notified that the channel is full
1282 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_3, 3_000_000);
1283 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_4, 3_000_000);
1284 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_5, 3_000_000);
1286 // Close down the channels...
1287 close_channel(&nodes[0], &nodes[1], &chan_1.2, chan_1.3, true);
1288 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, false);
1289 close_channel(&nodes[2], &nodes[3], &chan_3.2, chan_3.3, true);
1290 close_channel(&nodes[1], &nodes[3], &chan_4.2, chan_4.3, false);
1291 close_channel(&nodes[1], &nodes[3], &chan_5.2, chan_5.3, false);
1295 fn holding_cell_htlc_counting() {
1296 // Tests that HTLCs in the holding cell count towards the pending HTLC limits on outbound HTLCs
1297 // to ensure we don't end up with HTLCs sitting around in our holding cell for several
1298 // commitment dance rounds.
1299 let chanmon_cfgs = create_chanmon_cfgs(3);
1300 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1301 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1302 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1303 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
1304 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
1305 let logger = test_utils::TestLogger::new();
1307 let mut payments = Vec::new();
1308 for _ in 0..::ln::channel::OUR_MAX_HTLCS {
1309 let (payment_preimage, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[2]);
1310 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
1311 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();
1312 nodes[1].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
1313 payments.push((payment_preimage, payment_hash));
1315 check_added_monitors!(nodes[1], 1);
1317 let mut events = nodes[1].node.get_and_clear_pending_msg_events();
1318 assert_eq!(events.len(), 1);
1319 let initial_payment_event = SendEvent::from_event(events.pop().unwrap());
1320 assert_eq!(initial_payment_event.node_id, nodes[2].node.get_our_node_id());
1322 // There is now one HTLC in an outbound commitment transaction and (OUR_MAX_HTLCS - 1) HTLCs in
1323 // the holding cell waiting on B's RAA to send. At this point we should not be able to add
1325 let (_, payment_hash_1, payment_secret_1) = get_payment_preimage_hash!(nodes[2]);
1327 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
1328 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();
1329 unwrap_send_err!(nodes[1].node.send_payment(&route, payment_hash_1, &Some(payment_secret_1)), true, APIError::ChannelUnavailable { ref err },
1330 assert!(regex::Regex::new(r"Cannot push more than their max accepted HTLCs \(\d+\)").unwrap().is_match(err)));
1331 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1332 nodes[1].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot push more than their max accepted HTLCs".to_string(), 1);
1335 // This should also be true if we try to forward a payment.
1336 let (_, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[2]);
1338 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1339 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();
1340 nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
1341 check_added_monitors!(nodes[0], 1);
1344 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1345 assert_eq!(events.len(), 1);
1346 let payment_event = SendEvent::from_event(events.pop().unwrap());
1347 assert_eq!(payment_event.node_id, nodes[1].node.get_our_node_id());
1349 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
1350 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
1351 // We have to forward pending HTLCs twice - once tries to forward the payment forward (and
1352 // fails), the second will process the resulting failure and fail the HTLC backward.
1353 expect_pending_htlcs_forwardable!(nodes[1]);
1354 expect_pending_htlcs_forwardable!(nodes[1]);
1355 check_added_monitors!(nodes[1], 1);
1357 let bs_fail_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1358 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &bs_fail_updates.update_fail_htlcs[0]);
1359 commitment_signed_dance!(nodes[0], nodes[1], bs_fail_updates.commitment_signed, false, true);
1361 let events = nodes[0].node.get_and_clear_pending_msg_events();
1362 assert_eq!(events.len(), 1);
1364 MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelUpdateMessage { ref msg }} => {
1365 assert_eq!(msg.contents.short_channel_id, chan_2.0.contents.short_channel_id);
1367 _ => panic!("Unexpected event"),
1370 expect_payment_failed!(nodes[0], payment_hash_2, false);
1372 // Now forward all the pending HTLCs and claim them back
1373 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &initial_payment_event.msgs[0]);
1374 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &initial_payment_event.commitment_msg);
1375 check_added_monitors!(nodes[2], 1);
1377 let (bs_revoke_and_ack, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[2], nodes[1].node.get_our_node_id());
1378 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_revoke_and_ack);
1379 check_added_monitors!(nodes[1], 1);
1380 let as_updates = get_htlc_update_msgs!(nodes[1], nodes[2].node.get_our_node_id());
1382 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &bs_commitment_signed);
1383 check_added_monitors!(nodes[1], 1);
1384 let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
1386 for ref update in as_updates.update_add_htlcs.iter() {
1387 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), update);
1389 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &as_updates.commitment_signed);
1390 check_added_monitors!(nodes[2], 1);
1391 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa);
1392 check_added_monitors!(nodes[2], 1);
1393 let (bs_revoke_and_ack, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[2], nodes[1].node.get_our_node_id());
1395 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_revoke_and_ack);
1396 check_added_monitors!(nodes[1], 1);
1397 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &bs_commitment_signed);
1398 check_added_monitors!(nodes[1], 1);
1399 let as_final_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
1401 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_final_raa);
1402 check_added_monitors!(nodes[2], 1);
1404 expect_pending_htlcs_forwardable!(nodes[2]);
1406 let events = nodes[2].node.get_and_clear_pending_events();
1407 assert_eq!(events.len(), payments.len());
1408 for (event, &(_, ref hash)) in events.iter().zip(payments.iter()) {
1410 &Event::PaymentReceived { ref payment_hash, .. } => {
1411 assert_eq!(*payment_hash, *hash);
1413 _ => panic!("Unexpected event"),
1417 for (preimage, _) in payments.drain(..) {
1418 claim_payment(&nodes[1], &[&nodes[2]], preimage, 100_000);
1421 send_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1000000, 1_000_000);
1425 fn duplicate_htlc_test() {
1426 // Test that we accept duplicate payment_hash HTLCs across the network and that
1427 // claiming/failing them are all separate and don't affect each other
1428 let chanmon_cfgs = create_chanmon_cfgs(6);
1429 let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
1430 let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
1431 let mut nodes = create_network(6, &node_cfgs, &node_chanmgrs);
1433 // Create some initial channels to route via 3 to 4/5 from 0/1/2
1434 create_announced_chan_between_nodes(&nodes, 0, 3, InitFeatures::known(), InitFeatures::known());
1435 create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known());
1436 create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known());
1437 create_announced_chan_between_nodes(&nodes, 3, 4, InitFeatures::known(), InitFeatures::known());
1438 create_announced_chan_between_nodes(&nodes, 3, 5, InitFeatures::known(), InitFeatures::known());
1440 let (payment_preimage, payment_hash, _) = route_payment(&nodes[0], &vec!(&nodes[3], &nodes[4])[..], 1000000);
1442 *nodes[0].network_payment_count.borrow_mut() -= 1;
1443 assert_eq!(route_payment(&nodes[1], &vec!(&nodes[3])[..], 1000000).0, payment_preimage);
1445 *nodes[0].network_payment_count.borrow_mut() -= 1;
1446 assert_eq!(route_payment(&nodes[2], &vec!(&nodes[3], &nodes[5])[..], 1000000).0, payment_preimage);
1448 claim_payment(&nodes[0], &vec!(&nodes[3], &nodes[4])[..], payment_preimage, 1_000_000);
1449 fail_payment(&nodes[2], &vec!(&nodes[3], &nodes[5])[..], payment_hash);
1450 claim_payment(&nodes[1], &vec!(&nodes[3])[..], payment_preimage, 1_000_000);
1454 fn test_duplicate_htlc_different_direction_onchain() {
1455 // Test that ChannelMonitor doesn't generate 2 preimage txn
1456 // when we have 2 HTLCs with same preimage that go across a node
1457 // in opposite directions.
1458 let chanmon_cfgs = create_chanmon_cfgs(2);
1459 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1460 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1461 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1463 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
1464 let logger = test_utils::TestLogger::new();
1467 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
1469 let (payment_preimage, payment_hash, payment_secret) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 900_000);
1471 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
1472 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();
1473 let node_a_payment_secret = nodes[0].node.create_inbound_payment_for_hash(payment_hash, None, 7200).unwrap();
1474 send_along_route_with_secret(&nodes[1], route, &[&[&nodes[0]]], 800_000, payment_hash, node_a_payment_secret);
1476 // Provide preimage to node 0 by claiming payment
1477 nodes[0].node.claim_funds(payment_preimage, &Some(payment_secret), 800_000);
1478 check_added_monitors!(nodes[0], 1);
1480 // Broadcast node 1 commitment txn
1481 let remote_txn = get_local_commitment_txn!(nodes[1], chan_1.2);
1483 assert_eq!(remote_txn[0].output.len(), 4); // 1 local, 1 remote, 1 htlc inbound, 1 htlc outbound
1484 let mut has_both_htlcs = 0; // check htlcs match ones committed
1485 for outp in remote_txn[0].output.iter() {
1486 if outp.value == 800_000 / 1000 {
1487 has_both_htlcs += 1;
1488 } else if outp.value == 900_000 / 1000 {
1489 has_both_htlcs += 1;
1492 assert_eq!(has_both_htlcs, 2);
1494 mine_transaction(&nodes[0], &remote_txn[0]);
1495 check_added_monitors!(nodes[0], 1);
1497 // Check we only broadcast 1 timeout tx
1498 let claim_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
1499 let htlc_pair = if claim_txn[0].output[0].value == 800_000 / 1000 { (claim_txn[0].clone(), claim_txn[1].clone()) } else { (claim_txn[1].clone(), claim_txn[0].clone()) };
1500 assert_eq!(claim_txn.len(), 5);
1501 check_spends!(claim_txn[2], chan_1.3);
1502 check_spends!(claim_txn[3], claim_txn[2]);
1503 assert_eq!(htlc_pair.0.input.len(), 1);
1504 assert_eq!(htlc_pair.0.input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); // HTLC 1 <--> 0, preimage tx
1505 check_spends!(htlc_pair.0, remote_txn[0]);
1506 assert_eq!(htlc_pair.1.input.len(), 1);
1507 assert_eq!(htlc_pair.1.input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); // HTLC 0 <--> 1, timeout tx
1508 check_spends!(htlc_pair.1, remote_txn[0]);
1510 let events = nodes[0].node.get_and_clear_pending_msg_events();
1511 assert_eq!(events.len(), 3);
1514 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
1515 MessageSendEvent::HandleError { node_id, action: msgs::ErrorAction::SendErrorMessage { ref msg } } => {
1516 assert_eq!(node_id, nodes[1].node.get_our_node_id());
1517 assert_eq!(msg.data, "Commitment or closing transaction was confirmed on chain.");
1519 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, .. } } => {
1520 assert!(update_add_htlcs.is_empty());
1521 assert!(update_fail_htlcs.is_empty());
1522 assert_eq!(update_fulfill_htlcs.len(), 1);
1523 assert!(update_fail_malformed_htlcs.is_empty());
1524 assert_eq!(nodes[1].node.get_our_node_id(), *node_id);
1526 _ => panic!("Unexpected event"),
1532 fn test_basic_channel_reserve() {
1533 let chanmon_cfgs = create_chanmon_cfgs(2);
1534 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1535 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1536 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1537 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1538 let logger = test_utils::TestLogger::new();
1540 let chan_stat = get_channel_value_stat!(nodes[0], chan.2);
1541 let channel_reserve = chan_stat.channel_reserve_msat;
1543 // The 2* and +1 are for the fee spike reserve.
1544 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
1545 let commit_tx_fee = 2 * commit_tx_fee_msat(get_feerate!(nodes[0], chan.2), 1 + 1);
1546 let max_can_send = 5000000 - channel_reserve - commit_tx_fee;
1547 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1548 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();
1549 let err = nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).err().unwrap();
1551 PaymentSendFailure::AllFailedRetrySafe(ref fails) => {
1553 &APIError::ChannelUnavailable{ref err} =>
1554 assert!(regex::Regex::new(r"Cannot send value that would put our balance under counterparty-announced channel reserve value \(\d+\)").unwrap().is_match(err)),
1555 _ => panic!("Unexpected error variant"),
1558 _ => panic!("Unexpected error variant"),
1560 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1561 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);
1563 send_payment(&nodes[0], &vec![&nodes[1]], max_can_send, max_can_send);
1567 fn test_fee_spike_violation_fails_htlc() {
1568 let chanmon_cfgs = create_chanmon_cfgs(2);
1569 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1570 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1571 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1572 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1574 let (route, payment_hash, _, payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 3460001);
1575 // Need to manually create the update_add_htlc message to go around the channel reserve check in send_htlc()
1576 let secp_ctx = Secp256k1::new();
1577 let session_priv = SecretKey::from_slice(&[42; 32]).expect("RNG is bad!");
1579 let cur_height = nodes[1].node.best_block.read().unwrap().height() + 1;
1581 let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route.paths[0], &session_priv).unwrap();
1582 let (onion_payloads, htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route.paths[0], 3460001, &Some(payment_secret), cur_height).unwrap();
1583 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &payment_hash);
1584 let msg = msgs::UpdateAddHTLC {
1587 amount_msat: htlc_msat,
1588 payment_hash: payment_hash,
1589 cltv_expiry: htlc_cltv,
1590 onion_routing_packet: onion_packet,
1593 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg);
1595 // Now manually create the commitment_signed message corresponding to the update_add
1596 // nodes[0] just sent. In the code for construction of this message, "local" refers
1597 // to the sender of the message, and "remote" refers to the receiver.
1599 let feerate_per_kw = get_feerate!(nodes[0], chan.2);
1601 const INITIAL_COMMITMENT_NUMBER: u64 = (1 << 48) - 1;
1603 // Get the EnforcingSigner for each channel, which will be used to (1) get the keys
1604 // needed to sign the new commitment tx and (2) sign the new commitment tx.
1605 let (local_revocation_basepoint, local_htlc_basepoint, local_secret, next_local_point) = {
1606 let chan_lock = nodes[0].node.channel_state.lock().unwrap();
1607 let local_chan = chan_lock.by_id.get(&chan.2).unwrap();
1608 let chan_signer = local_chan.get_signer();
1609 let pubkeys = chan_signer.pubkeys();
1610 (pubkeys.revocation_basepoint, pubkeys.htlc_basepoint,
1611 chan_signer.release_commitment_secret(INITIAL_COMMITMENT_NUMBER),
1612 chan_signer.get_per_commitment_point(INITIAL_COMMITMENT_NUMBER - 2, &secp_ctx))
1614 let (remote_delayed_payment_basepoint, remote_htlc_basepoint,remote_point) = {
1615 let chan_lock = nodes[1].node.channel_state.lock().unwrap();
1616 let remote_chan = chan_lock.by_id.get(&chan.2).unwrap();
1617 let chan_signer = remote_chan.get_signer();
1618 let pubkeys = chan_signer.pubkeys();
1619 (pubkeys.delayed_payment_basepoint, pubkeys.htlc_basepoint,
1620 chan_signer.get_per_commitment_point(INITIAL_COMMITMENT_NUMBER - 1, &secp_ctx))
1623 // Assemble the set of keys we can use for signatures for our commitment_signed message.
1624 let commit_tx_keys = chan_utils::TxCreationKeys::derive_new(&secp_ctx, &remote_point, &remote_delayed_payment_basepoint,
1625 &remote_htlc_basepoint, &local_revocation_basepoint, &local_htlc_basepoint).unwrap();
1627 // Build the remote commitment transaction so we can sign it, and then later use the
1628 // signature for the commitment_signed message.
1629 let local_chan_balance = 1313;
1631 let accepted_htlc_info = chan_utils::HTLCOutputInCommitment {
1633 amount_msat: 3460001,
1634 cltv_expiry: htlc_cltv,
1636 transaction_output_index: Some(1),
1639 let commitment_number = INITIAL_COMMITMENT_NUMBER - 1;
1642 let local_chan_lock = nodes[0].node.channel_state.lock().unwrap();
1643 let local_chan = local_chan_lock.by_id.get(&chan.2).unwrap();
1644 let local_chan_signer = local_chan.get_signer();
1645 let commitment_tx = CommitmentTransaction::new_with_auxiliary_htlc_data(
1649 commit_tx_keys.clone(),
1651 &mut vec![(accepted_htlc_info, ())],
1652 &local_chan.channel_transaction_parameters.as_counterparty_broadcastable()
1654 local_chan_signer.sign_counterparty_commitment(&commitment_tx, &secp_ctx).unwrap()
1657 let commit_signed_msg = msgs::CommitmentSigned {
1660 htlc_signatures: res.1
1663 // Send the commitment_signed message to the nodes[1].
1664 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &commit_signed_msg);
1665 let _ = nodes[1].node.get_and_clear_pending_msg_events();
1667 // Send the RAA to nodes[1].
1668 let raa_msg = msgs::RevokeAndACK {
1670 per_commitment_secret: local_secret,
1671 next_per_commitment_point: next_local_point
1673 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &raa_msg);
1675 let events = nodes[1].node.get_and_clear_pending_msg_events();
1676 assert_eq!(events.len(), 1);
1677 // Make sure the HTLC failed in the way we expect.
1679 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fail_htlcs, .. }, .. } => {
1680 assert_eq!(update_fail_htlcs.len(), 1);
1681 update_fail_htlcs[0].clone()
1683 _ => panic!("Unexpected event"),
1685 nodes[1].logger.assert_log("lightning::ln::channel".to_string(), "Attempting to fail HTLC due to fee spike buffer violation".to_string(), 1);
1687 check_added_monitors!(nodes[1], 2);
1691 fn test_chan_reserve_violation_outbound_htlc_inbound_chan() {
1692 let mut chanmon_cfgs = create_chanmon_cfgs(2);
1693 // Set the fee rate for the channel very high, to the point where the fundee
1694 // sending any above-dust amount would result in a channel reserve violation.
1695 // In this test we check that we would be prevented from sending an HTLC in
1697 chanmon_cfgs[0].fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 6000 };
1698 chanmon_cfgs[1].fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 6000 };
1699 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1700 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1701 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1702 let _ = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1704 let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[1], nodes[0], 4843000);
1705 unwrap_send_err!(nodes[1].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)), true, APIError::ChannelUnavailable { ref err },
1706 assert_eq!(err, "Cannot send value that would put counterparty balance under holder-announced channel reserve value"));
1707 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1708 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);
1712 fn test_chan_reserve_violation_inbound_htlc_outbound_channel() {
1713 let mut chanmon_cfgs = create_chanmon_cfgs(2);
1714 // Set the fee rate for the channel very high, to the point where the funder
1715 // receiving 1 update_add_htlc would result in them closing the channel due
1716 // to channel reserve violation. This close could also happen if the fee went
1717 // up a more realistic amount, but many HTLCs were outstanding at the time of
1718 // the update_add_htlc.
1719 chanmon_cfgs[0].fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 6000 };
1720 chanmon_cfgs[1].fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 6000 };
1721 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1722 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1723 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1724 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1726 let (route, payment_hash, _, payment_secret) = get_route_and_payment_hash!(nodes[1], nodes[0], 1000);
1727 // Need to manually create the update_add_htlc message to go around the channel reserve check in send_htlc()
1728 let secp_ctx = Secp256k1::new();
1729 let session_priv = SecretKey::from_slice(&[42; 32]).unwrap();
1730 let cur_height = nodes[1].node.best_block.read().unwrap().height() + 1;
1731 let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route.paths[0], &session_priv).unwrap();
1732 let (onion_payloads, htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route.paths[0], 1000, &Some(payment_secret), cur_height).unwrap();
1733 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &payment_hash);
1734 let msg = msgs::UpdateAddHTLC {
1737 amount_msat: htlc_msat + 1,
1738 payment_hash: payment_hash,
1739 cltv_expiry: htlc_cltv,
1740 onion_routing_packet: onion_packet,
1743 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &msg);
1744 // Check that the payment failed and the channel is closed in response to the malicious UpdateAdd.
1745 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);
1746 assert_eq!(nodes[0].node.list_channels().len(), 0);
1747 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
1748 assert_eq!(err_msg.data, "Cannot accept HTLC that would put our balance under counterparty-announced channel reserve value");
1749 check_added_monitors!(nodes[0], 1);
1753 fn test_chan_reserve_dust_inbound_htlcs_outbound_chan() {
1754 // Test that if we receive many dust HTLCs over an outbound channel, they don't count when
1755 // calculating our commitment transaction fee (this was previously broken).
1756 let chanmon_cfgs = create_chanmon_cfgs(2);
1757 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1758 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None, None]);
1759 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1761 // Set nodes[0]'s balance such that they will consider any above-dust received HTLC to be a
1762 // channel reserve violation (so their balance is channel reserve (1000 sats) + commitment
1763 // transaction fee with 0 HTLCs (183 sats)).
1764 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 98817000, InitFeatures::known(), InitFeatures::known());
1766 let dust_amt = 546000; // Dust amount
1767 // In the previous code, routing this dust payment would cause nodes[0] to perceive a channel
1768 // reserve violation even though it's a dust HTLC and therefore shouldn't count towards the
1769 // commitment transaction fee.
1770 let (_, _, _) = route_payment(&nodes[1], &[&nodes[0]], dust_amt);
1774 fn test_chan_reserve_dust_inbound_htlcs_inbound_chan() {
1775 // Test that if we receive many dust HTLCs over an inbound channel, they don't count when
1776 // calculating our counterparty's commitment transaction fee (this was previously broken).
1777 let chanmon_cfgs = create_chanmon_cfgs(2);
1778 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1779 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None, None]);
1780 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1781 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 98000000, InitFeatures::known(), InitFeatures::known());
1783 let payment_amt = 46000; // Dust amount
1784 // In the previous code, these first four payments would succeed.
1785 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1786 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1787 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1788 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1790 // Then these next 5 would be interpreted by nodes[1] as violating the fee spike buffer.
1791 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1792 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1793 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1794 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1795 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1797 // And this last payment previously resulted in nodes[1] closing on its inbound-channel
1798 // counterparty, because it counted all the previous dust HTLCs against nodes[0]'s commitment
1799 // transaction fee and therefore perceived this next payment as a channel reserve violation.
1800 let (_, _, _) = route_payment(&nodes[0], &[&nodes[1]], payment_amt);
1804 fn test_chan_reserve_violation_inbound_htlc_inbound_chan() {
1805 let chanmon_cfgs = create_chanmon_cfgs(3);
1806 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1807 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1808 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1809 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1810 let _ = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1813 let total_routing_fee_msat = (nodes.len() - 2) as u64 * feemsat;
1814 let chan_stat = get_channel_value_stat!(nodes[0], chan.2);
1815 let feerate = get_feerate!(nodes[0], chan.2);
1817 // Add a 2* and +1 for the fee spike reserve.
1818 let commit_tx_fee_2_htlc = 2*commit_tx_fee_msat(feerate, 2 + 1);
1819 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;
1820 let amt_msat_1 = recv_value_1 + total_routing_fee_msat;
1822 // Add a pending HTLC.
1823 let (route_1, our_payment_hash_1, _, our_payment_secret_1) = get_route_and_payment_hash!(nodes[0], nodes[2], amt_msat_1);
1824 let payment_event_1 = {
1825 nodes[0].node.send_payment(&route_1, our_payment_hash_1, &Some(our_payment_secret_1)).unwrap();
1826 check_added_monitors!(nodes[0], 1);
1828 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1829 assert_eq!(events.len(), 1);
1830 SendEvent::from_event(events.remove(0))
1832 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event_1.msgs[0]);
1834 // Attempt to trigger a channel reserve violation --> payment failure.
1835 let commit_tx_fee_2_htlcs = commit_tx_fee_msat(feerate, 2);
1836 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;
1837 let amt_msat_2 = recv_value_2 + total_routing_fee_msat;
1838 let (route_2, _, _, _) = get_route_and_payment_hash!(nodes[0], nodes[2], amt_msat_2);
1840 // Need to manually create the update_add_htlc message to go around the channel reserve check in send_htlc()
1841 let secp_ctx = Secp256k1::new();
1842 let session_priv = SecretKey::from_slice(&[42; 32]).unwrap();
1843 let cur_height = nodes[0].node.best_block.read().unwrap().height() + 1;
1844 let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route_2.paths[0], &session_priv).unwrap();
1845 let (onion_payloads, htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route_2.paths[0], recv_value_2, &None, cur_height).unwrap();
1846 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &our_payment_hash_1);
1847 let msg = msgs::UpdateAddHTLC {
1850 amount_msat: htlc_msat + 1,
1851 payment_hash: our_payment_hash_1,
1852 cltv_expiry: htlc_cltv,
1853 onion_routing_packet: onion_packet,
1856 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg);
1857 // Check that the payment failed and the channel is closed in response to the malicious UpdateAdd.
1858 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Remote HTLC add would put them under remote reserve value".to_string(), 1);
1859 assert_eq!(nodes[1].node.list_channels().len(), 1);
1860 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
1861 assert_eq!(err_msg.data, "Remote HTLC add would put them under remote reserve value");
1862 check_added_monitors!(nodes[1], 1);
1866 fn test_inbound_outbound_capacity_is_not_zero() {
1867 let chanmon_cfgs = create_chanmon_cfgs(2);
1868 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1869 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1870 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1871 let _ = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1872 let channels0 = node_chanmgrs[0].list_channels();
1873 let channels1 = node_chanmgrs[1].list_channels();
1874 assert_eq!(channels0.len(), 1);
1875 assert_eq!(channels1.len(), 1);
1877 assert_eq!(channels0[0].inbound_capacity_msat, 95000000);
1878 assert_eq!(channels1[0].outbound_capacity_msat, 95000000);
1880 assert_eq!(channels0[0].outbound_capacity_msat, 100000 * 1000 - 95000000);
1881 assert_eq!(channels1[0].inbound_capacity_msat, 100000 * 1000 - 95000000);
1884 fn commit_tx_fee_msat(feerate: u32, num_htlcs: u64) -> u64 {
1885 (COMMITMENT_TX_BASE_WEIGHT + num_htlcs * COMMITMENT_TX_WEIGHT_PER_HTLC) * feerate as u64 / 1000 * 1000
1889 fn test_channel_reserve_holding_cell_htlcs() {
1890 let chanmon_cfgs = create_chanmon_cfgs(3);
1891 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1892 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1893 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1894 let chan_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 190000, 1001, InitFeatures::known(), InitFeatures::known());
1895 let chan_2 = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 190000, 1001, InitFeatures::known(), InitFeatures::known());
1897 let mut stat01 = get_channel_value_stat!(nodes[0], chan_1.2);
1898 let mut stat11 = get_channel_value_stat!(nodes[1], chan_1.2);
1900 let mut stat12 = get_channel_value_stat!(nodes[1], chan_2.2);
1901 let mut stat22 = get_channel_value_stat!(nodes[2], chan_2.2);
1903 macro_rules! expect_forward {
1905 let mut events = $node.node.get_and_clear_pending_msg_events();
1906 assert_eq!(events.len(), 1);
1907 check_added_monitors!($node, 1);
1908 let payment_event = SendEvent::from_event(events.remove(0));
1913 let feemsat = 239; // somehow we know?
1914 let total_fee_msat = (nodes.len() - 2) as u64 * feemsat;
1915 let feerate = get_feerate!(nodes[0], chan_1.2);
1917 let recv_value_0 = stat01.counterparty_max_htlc_value_in_flight_msat - total_fee_msat;
1919 // attempt to send amt_msat > their_max_htlc_value_in_flight_msat
1921 let (mut route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], recv_value_0);
1922 route.paths[0].last_mut().unwrap().fee_msat += 1;
1923 assert!(route.paths[0].iter().rev().skip(1).all(|h| h.fee_msat == feemsat));
1924 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)), true, APIError::ChannelUnavailable { ref err },
1925 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)));
1926 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1927 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);
1930 // channel reserve is bigger than their_max_htlc_value_in_flight_msat so loop to deplete
1931 // nodes[0]'s wealth
1933 let amt_msat = recv_value_0 + total_fee_msat;
1934 // 3 for the 3 HTLCs that will be sent, 2* and +1 for the fee spike reserve.
1935 // Also, ensure that each payment has enough to be over the dust limit to
1936 // ensure it'll be included in each commit tx fee calculation.
1937 let commit_tx_fee_all_htlcs = 2*commit_tx_fee_msat(feerate, 3 + 1);
1938 let ensure_htlc_amounts_above_dust_buffer = 3 * (stat01.counterparty_dust_limit_msat + 1000);
1939 if stat01.value_to_self_msat < stat01.channel_reserve_msat + commit_tx_fee_all_htlcs + ensure_htlc_amounts_above_dust_buffer + amt_msat {
1942 send_payment(&nodes[0], &vec![&nodes[1], &nodes[2]][..], recv_value_0, recv_value_0);
1944 let (stat01_, stat11_, stat12_, stat22_) = (
1945 get_channel_value_stat!(nodes[0], chan_1.2),
1946 get_channel_value_stat!(nodes[1], chan_1.2),
1947 get_channel_value_stat!(nodes[1], chan_2.2),
1948 get_channel_value_stat!(nodes[2], chan_2.2),
1951 assert_eq!(stat01_.value_to_self_msat, stat01.value_to_self_msat - amt_msat);
1952 assert_eq!(stat11_.value_to_self_msat, stat11.value_to_self_msat + amt_msat);
1953 assert_eq!(stat12_.value_to_self_msat, stat12.value_to_self_msat - (amt_msat - feemsat));
1954 assert_eq!(stat22_.value_to_self_msat, stat22.value_to_self_msat + (amt_msat - feemsat));
1955 stat01 = stat01_; stat11 = stat11_; stat12 = stat12_; stat22 = stat22_;
1958 // adding pending output.
1959 // 2* and +1 HTLCs on the commit tx fee for the fee spike reserve.
1960 // The reason we're dividing by two here is as follows: the dividend is the total outbound liquidity
1961 // after fees, the channel reserve, and the fee spike buffer are removed. We eventually want to
1962 // divide this quantity into 3 portions, that will each be sent in an HTLC. This allows us
1963 // to test channel channel reserve policy at the edges of what amount is sendable, i.e.
1964 // cases where 1 msat over X amount will cause a payment failure, but anything less than
1965 // that can be sent successfully. So, dividing by two is a somewhat arbitrary way of getting
1966 // the amount of the first of these aforementioned 3 payments. The reason we split into 3 payments
1967 // is to test the behavior of the holding cell with respect to channel reserve and commit tx fee
1969 let commit_tx_fee_2_htlcs = 2*commit_tx_fee_msat(feerate, 2 + 1);
1970 let recv_value_1 = (stat01.value_to_self_msat - stat01.channel_reserve_msat - total_fee_msat - commit_tx_fee_2_htlcs)/2;
1971 let amt_msat_1 = recv_value_1 + total_fee_msat;
1973 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);
1974 let payment_event_1 = {
1975 nodes[0].node.send_payment(&route_1, our_payment_hash_1, &Some(our_payment_secret_1)).unwrap();
1976 check_added_monitors!(nodes[0], 1);
1978 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1979 assert_eq!(events.len(), 1);
1980 SendEvent::from_event(events.remove(0))
1982 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event_1.msgs[0]);
1984 // channel reserve test with htlc pending output > 0
1985 let recv_value_2 = stat01.value_to_self_msat - amt_msat_1 - stat01.channel_reserve_msat - total_fee_msat - commit_tx_fee_2_htlcs;
1987 let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], recv_value_2 + 1);
1988 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)), true, APIError::ChannelUnavailable { ref err },
1989 assert!(regex::Regex::new(r"Cannot send value that would put our balance under counterparty-announced channel reserve value \(\d+\)").unwrap().is_match(err)));
1990 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1993 // split the rest to test holding cell
1994 let commit_tx_fee_3_htlcs = 2*commit_tx_fee_msat(feerate, 3 + 1);
1995 let additional_htlc_cost_msat = commit_tx_fee_3_htlcs - commit_tx_fee_2_htlcs;
1996 let recv_value_21 = recv_value_2/2 - additional_htlc_cost_msat/2;
1997 let recv_value_22 = recv_value_2 - recv_value_21 - total_fee_msat - additional_htlc_cost_msat;
1999 let stat = get_channel_value_stat!(nodes[0], chan_1.2);
2000 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);
2003 // now see if they go through on both sides
2004 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);
2005 // but this will stuck in the holding cell
2006 nodes[0].node.send_payment(&route_21, our_payment_hash_21, &Some(our_payment_secret_21)).unwrap();
2007 check_added_monitors!(nodes[0], 0);
2008 let events = nodes[0].node.get_and_clear_pending_events();
2009 assert_eq!(events.len(), 0);
2011 // test with outbound holding cell amount > 0
2013 let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], recv_value_22+1);
2014 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)), true, APIError::ChannelUnavailable { ref err },
2015 assert!(regex::Regex::new(r"Cannot send value that would put our balance under counterparty-announced channel reserve value \(\d+\)").unwrap().is_match(err)));
2016 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2017 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);
2020 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);
2021 // this will also stuck in the holding cell
2022 nodes[0].node.send_payment(&route_22, our_payment_hash_22, &Some(our_payment_secret_22)).unwrap();
2023 check_added_monitors!(nodes[0], 0);
2024 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
2025 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2027 // flush the pending htlc
2028 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event_1.commitment_msg);
2029 let (as_revoke_and_ack, as_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
2030 check_added_monitors!(nodes[1], 1);
2032 // the pending htlc should be promoted to committed
2033 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_revoke_and_ack);
2034 check_added_monitors!(nodes[0], 1);
2035 let commitment_update_2 = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2037 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &as_commitment_signed);
2038 let bs_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2039 // No commitment_signed so get_event_msg's assert(len == 1) passes
2040 check_added_monitors!(nodes[0], 1);
2042 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &bs_revoke_and_ack);
2043 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2044 check_added_monitors!(nodes[1], 1);
2046 expect_pending_htlcs_forwardable!(nodes[1]);
2048 let ref payment_event_11 = expect_forward!(nodes[1]);
2049 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_11.msgs[0]);
2050 commitment_signed_dance!(nodes[2], nodes[1], payment_event_11.commitment_msg, false);
2052 expect_pending_htlcs_forwardable!(nodes[2]);
2053 expect_payment_received!(nodes[2], our_payment_hash_1, our_payment_secret_1, recv_value_1);
2055 // flush the htlcs in the holding cell
2056 assert_eq!(commitment_update_2.update_add_htlcs.len(), 2);
2057 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &commitment_update_2.update_add_htlcs[0]);
2058 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &commitment_update_2.update_add_htlcs[1]);
2059 commitment_signed_dance!(nodes[1], nodes[0], &commitment_update_2.commitment_signed, false);
2060 expect_pending_htlcs_forwardable!(nodes[1]);
2062 let ref payment_event_3 = expect_forward!(nodes[1]);
2063 assert_eq!(payment_event_3.msgs.len(), 2);
2064 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_3.msgs[0]);
2065 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_3.msgs[1]);
2067 commitment_signed_dance!(nodes[2], nodes[1], &payment_event_3.commitment_msg, false);
2068 expect_pending_htlcs_forwardable!(nodes[2]);
2070 let events = nodes[2].node.get_and_clear_pending_events();
2071 assert_eq!(events.len(), 2);
2073 Event::PaymentReceived { ref payment_hash, ref payment_secret, amt } => {
2074 assert_eq!(our_payment_hash_21, *payment_hash);
2075 assert_eq!(Some(our_payment_secret_21), *payment_secret);
2076 assert_eq!(recv_value_21, amt);
2078 _ => panic!("Unexpected event"),
2081 Event::PaymentReceived { ref payment_hash, ref payment_secret, amt } => {
2082 assert_eq!(our_payment_hash_22, *payment_hash);
2083 assert_eq!(Some(our_payment_secret_22), *payment_secret);
2084 assert_eq!(recv_value_22, amt);
2086 _ => panic!("Unexpected event"),
2089 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_1, recv_value_1);
2090 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_21, recv_value_21);
2091 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_22, recv_value_22);
2093 let commit_tx_fee_0_htlcs = 2*commit_tx_fee_msat(feerate, 1);
2094 let recv_value_3 = commit_tx_fee_2_htlcs - commit_tx_fee_0_htlcs - total_fee_msat;
2095 send_payment(&nodes[0], &vec![&nodes[1], &nodes[2]][..], recv_value_3, recv_value_3);
2097 let commit_tx_fee_1_htlc = 2*commit_tx_fee_msat(feerate, 1 + 1);
2098 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);
2099 let stat0 = get_channel_value_stat!(nodes[0], chan_1.2);
2100 assert_eq!(stat0.value_to_self_msat, expected_value_to_self);
2101 assert_eq!(stat0.value_to_self_msat, stat0.channel_reserve_msat + commit_tx_fee_1_htlc);
2103 let stat2 = get_channel_value_stat!(nodes[2], chan_2.2);
2104 assert_eq!(stat2.value_to_self_msat, stat22.value_to_self_msat + recv_value_1 + recv_value_21 + recv_value_22 + recv_value_3);
2108 fn channel_reserve_in_flight_removes() {
2109 // In cases where one side claims an HTLC, it thinks it has additional available funds that it
2110 // can send to its counterparty, but due to update ordering, the other side may not yet have
2111 // considered those HTLCs fully removed.
2112 // This tests that we don't count HTLCs which will not be included in the next remote
2113 // commitment transaction towards the reserve value (as it implies no commitment transaction
2114 // will be generated which violates the remote reserve value).
2115 // This was broken previously, and discovered by the chanmon_fail_consistency fuzz test.
2117 // * route two HTLCs from A to B (note that, at a high level, this test is checking that, when
2118 // you consider the values of both of these HTLCs, B may not send an HTLC back to A, but if
2119 // you only consider the value of the first HTLC, it may not),
2120 // * start routing a third HTLC from A to B,
2121 // * claim the first two HTLCs (though B will generate an update_fulfill for one, and put
2122 // the other claim in its holding cell, as it immediately goes into AwaitingRAA),
2123 // * deliver the first fulfill from B
2124 // * deliver the update_add and an RAA from A, resulting in B freeing the second holding cell
2126 // * deliver A's response CS and RAA.
2127 // This results in A having the second HTLC in AwaitingRemovedRemoteRevoke, but B having
2128 // removed it fully. B now has the push_msat plus the first two HTLCs in value.
2129 // * Now B happily sends another HTLC, potentially violating its reserve value from A's point
2130 // of view (if A counts the AwaitingRemovedRemoteRevoke HTLC).
2131 let chanmon_cfgs = create_chanmon_cfgs(2);
2132 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2133 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2134 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2135 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2136 let logger = test_utils::TestLogger::new();
2138 let b_chan_values = get_channel_value_stat!(nodes[1], chan_1.2);
2139 // Route the first two HTLCs.
2140 let (payment_preimage_1, _, _) = route_payment(&nodes[0], &[&nodes[1]], b_chan_values.channel_reserve_msat - b_chan_values.value_to_self_msat - 10000);
2141 let (payment_preimage_2, _, _) = route_payment(&nodes[0], &[&nodes[1]], 20000);
2143 // Start routing the third HTLC (this is just used to get everyone in the right state).
2144 let (payment_preimage_3, payment_hash_3, payment_secret_3) = get_payment_preimage_hash!(nodes[1]);
2146 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
2147 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();
2148 nodes[0].node.send_payment(&route, payment_hash_3, &Some(payment_secret_3)).unwrap();
2149 check_added_monitors!(nodes[0], 1);
2150 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
2151 assert_eq!(events.len(), 1);
2152 SendEvent::from_event(events.remove(0))
2155 // Now claim both of the first two HTLCs on B's end, putting B in AwaitingRAA and generating an
2156 // initial fulfill/CS.
2157 assert!(nodes[1].node.claim_funds(payment_preimage_1, &None, b_chan_values.channel_reserve_msat - b_chan_values.value_to_self_msat - 10000));
2158 check_added_monitors!(nodes[1], 1);
2159 let bs_removes = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
2161 // This claim goes in B's holding cell, allowing us to have a pending B->A RAA which does not
2162 // remove the second HTLC when we send the HTLC back from B to A.
2163 assert!(nodes[1].node.claim_funds(payment_preimage_2, &None, 20000));
2164 check_added_monitors!(nodes[1], 1);
2165 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2167 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_removes.update_fulfill_htlcs[0]);
2168 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_removes.commitment_signed);
2169 check_added_monitors!(nodes[0], 1);
2170 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2171 expect_payment_sent!(nodes[0], payment_preimage_1);
2173 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_1.msgs[0]);
2174 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send_1.commitment_msg);
2175 check_added_monitors!(nodes[1], 1);
2176 // B is already AwaitingRAA, so cant generate a CS here
2177 let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2179 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
2180 check_added_monitors!(nodes[1], 1);
2181 let bs_cs = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
2183 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
2184 check_added_monitors!(nodes[0], 1);
2185 let as_cs = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2187 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_cs.commitment_signed);
2188 check_added_monitors!(nodes[1], 1);
2189 let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2191 // The second HTLCis removed, but as A is in AwaitingRAA it can't generate a CS here, so the
2192 // RAA that B generated above doesn't fully resolve the second HTLC from A's point of view.
2193 // However, the RAA A generates here *does* fully resolve the HTLC from B's point of view (as A
2194 // can no longer broadcast a commitment transaction with it and B has the preimage so can go
2195 // on-chain as necessary).
2196 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_cs.update_fulfill_htlcs[0]);
2197 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_cs.commitment_signed);
2198 check_added_monitors!(nodes[0], 1);
2199 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2200 expect_payment_sent!(nodes[0], payment_preimage_2);
2202 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
2203 check_added_monitors!(nodes[1], 1);
2204 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2206 expect_pending_htlcs_forwardable!(nodes[1]);
2207 expect_payment_received!(nodes[1], payment_hash_3, payment_secret_3, 100000);
2209 // Note that as this RAA was generated before the delivery of the update_fulfill it shouldn't
2210 // resolve the second HTLC from A's point of view.
2211 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
2212 check_added_monitors!(nodes[0], 1);
2213 let as_cs = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2215 // Now that B doesn't have the second RAA anymore, but A still does, send a payment from B back
2216 // to A to ensure that A doesn't count the almost-removed HTLC in update_add processing.
2217 let (payment_preimage_4, payment_hash_4, payment_secret_4) = get_payment_preimage_hash!(nodes[0]);
2219 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
2220 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();
2221 nodes[1].node.send_payment(&route, payment_hash_4, &Some(payment_secret_4)).unwrap();
2222 check_added_monitors!(nodes[1], 1);
2223 let mut events = nodes[1].node.get_and_clear_pending_msg_events();
2224 assert_eq!(events.len(), 1);
2225 SendEvent::from_event(events.remove(0))
2228 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &send_2.msgs[0]);
2229 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &send_2.commitment_msg);
2230 check_added_monitors!(nodes[0], 1);
2231 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2233 // Now just resolve all the outstanding messages/HTLCs for completeness...
2235 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_cs.commitment_signed);
2236 check_added_monitors!(nodes[1], 1);
2237 let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2239 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
2240 check_added_monitors!(nodes[1], 1);
2242 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
2243 check_added_monitors!(nodes[0], 1);
2244 let as_cs = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2246 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_cs.commitment_signed);
2247 check_added_monitors!(nodes[1], 1);
2248 let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2250 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
2251 check_added_monitors!(nodes[0], 1);
2253 expect_pending_htlcs_forwardable!(nodes[0]);
2254 expect_payment_received!(nodes[0], payment_hash_4, payment_secret_4, 10000);
2256 claim_payment(&nodes[1], &[&nodes[0]], payment_preimage_4, 10_000);
2257 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_3, 100_000);
2261 fn channel_monitor_network_test() {
2262 // Simple test which builds a network of ChannelManagers, connects them to each other, and
2263 // tests that ChannelMonitor is able to recover from various states.
2264 let chanmon_cfgs = create_chanmon_cfgs(5);
2265 let node_cfgs = create_node_cfgs(5, &chanmon_cfgs);
2266 let node_chanmgrs = create_node_chanmgrs(5, &node_cfgs, &[None, None, None, None, None]);
2267 let nodes = create_network(5, &node_cfgs, &node_chanmgrs);
2269 // Create some initial channels
2270 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2271 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
2272 let chan_3 = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known());
2273 let chan_4 = create_announced_chan_between_nodes(&nodes, 3, 4, InitFeatures::known(), InitFeatures::known());
2275 // Make sure all nodes are at the same starting height
2276 connect_blocks(&nodes[0], 4*CHAN_CONFIRM_DEPTH + 1 - nodes[0].best_block_info().1);
2277 connect_blocks(&nodes[1], 4*CHAN_CONFIRM_DEPTH + 1 - nodes[1].best_block_info().1);
2278 connect_blocks(&nodes[2], 4*CHAN_CONFIRM_DEPTH + 1 - nodes[2].best_block_info().1);
2279 connect_blocks(&nodes[3], 4*CHAN_CONFIRM_DEPTH + 1 - nodes[3].best_block_info().1);
2280 connect_blocks(&nodes[4], 4*CHAN_CONFIRM_DEPTH + 1 - nodes[4].best_block_info().1);
2282 // Rebalance the network a bit by relaying one payment through all the channels...
2283 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000, 8_000_000);
2284 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000, 8_000_000);
2285 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000, 8_000_000);
2286 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000, 8_000_000);
2288 // Simple case with no pending HTLCs:
2289 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), true);
2290 check_added_monitors!(nodes[1], 1);
2291 check_closed_broadcast!(nodes[1], false);
2293 let mut node_txn = test_txn_broadcast(&nodes[1], &chan_1, None, HTLCType::NONE);
2294 assert_eq!(node_txn.len(), 1);
2295 mine_transaction(&nodes[0], &node_txn[0]);
2296 check_added_monitors!(nodes[0], 1);
2297 test_txn_broadcast(&nodes[0], &chan_1, None, HTLCType::NONE);
2299 check_closed_broadcast!(nodes[0], true);
2300 assert_eq!(nodes[0].node.list_channels().len(), 0);
2301 assert_eq!(nodes[1].node.list_channels().len(), 1);
2303 // One pending HTLC is discarded by the force-close:
2304 let payment_preimage_1 = route_payment(&nodes[1], &vec!(&nodes[2], &nodes[3])[..], 3000000).0;
2306 // Simple case of one pending HTLC to HTLC-Timeout
2307 nodes[1].node.peer_disconnected(&nodes[2].node.get_our_node_id(), true);
2308 check_closed_broadcast!(nodes[1], false);
2309 check_added_monitors!(nodes[1], 1);
2311 let mut node_txn = test_txn_broadcast(&nodes[1], &chan_2, None, HTLCType::TIMEOUT);
2312 mine_transaction(&nodes[2], &node_txn[0]);
2313 check_added_monitors!(nodes[2], 1);
2314 test_txn_broadcast(&nodes[2], &chan_2, None, HTLCType::NONE);
2316 check_closed_broadcast!(nodes[2], true);
2317 assert_eq!(nodes[1].node.list_channels().len(), 0);
2318 assert_eq!(nodes[2].node.list_channels().len(), 1);
2320 macro_rules! claim_funds {
2321 ($node: expr, $prev_node: expr, $preimage: expr, $amount: expr) => {
2323 assert!($node.node.claim_funds($preimage, &None, $amount));
2324 check_added_monitors!($node, 1);
2326 let events = $node.node.get_and_clear_pending_msg_events();
2327 assert_eq!(events.len(), 1);
2329 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, .. } } => {
2330 assert!(update_add_htlcs.is_empty());
2331 assert!(update_fail_htlcs.is_empty());
2332 assert_eq!(*node_id, $prev_node.node.get_our_node_id());
2334 _ => panic!("Unexpected event"),
2340 // nodes[3] gets the preimage, but nodes[2] already disconnected, resulting in a nodes[2]
2341 // HTLC-Timeout and a nodes[3] claim against it (+ its own announces)
2342 nodes[2].node.peer_disconnected(&nodes[3].node.get_our_node_id(), true);
2343 check_added_monitors!(nodes[2], 1);
2344 check_closed_broadcast!(nodes[2], false);
2345 let node2_commitment_txid;
2347 let node_txn = test_txn_broadcast(&nodes[2], &chan_3, None, HTLCType::TIMEOUT);
2348 node2_commitment_txid = node_txn[0].txid();
2350 // Claim the payment on nodes[3], giving it knowledge of the preimage
2351 claim_funds!(nodes[3], nodes[2], payment_preimage_1, 3_000_000);
2352 mine_transaction(&nodes[3], &node_txn[0]);
2353 check_added_monitors!(nodes[3], 1);
2354 check_preimage_claim(&nodes[3], &node_txn);
2356 check_closed_broadcast!(nodes[3], true);
2357 assert_eq!(nodes[2].node.list_channels().len(), 0);
2358 assert_eq!(nodes[3].node.list_channels().len(), 1);
2360 // Drop the ChannelMonitor for the previous channel to avoid it broadcasting transactions and
2361 // confusing us in the following tests.
2362 let chan_3_mon = nodes[3].chain_monitor.chain_monitor.monitors.write().unwrap().remove(&OutPoint { txid: chan_3.3.txid(), index: 0 }).unwrap();
2364 // One pending HTLC to time out:
2365 let payment_preimage_2 = route_payment(&nodes[3], &vec!(&nodes[4])[..], 3000000).0;
2366 // CLTV expires at TEST_FINAL_CLTV + 1 (current height) + 1 (added in send_payment for
2369 let (close_chan_update_1, close_chan_update_2) = {
2370 connect_blocks(&nodes[3], TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + 1);
2371 let events = nodes[3].node.get_and_clear_pending_msg_events();
2372 assert_eq!(events.len(), 2);
2373 let close_chan_update_1 = match events[0] {
2374 MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
2377 _ => panic!("Unexpected event"),
2380 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { .. }, node_id } => {
2381 assert_eq!(node_id, nodes[4].node.get_our_node_id());
2383 _ => panic!("Unexpected event"),
2385 check_added_monitors!(nodes[3], 1);
2387 // Clear bumped claiming txn spending node 2 commitment tx. Bumped txn are generated after reaching some height timer.
2389 let mut node_txn = nodes[3].tx_broadcaster.txn_broadcasted.lock().unwrap();
2390 node_txn.retain(|tx| {
2391 if tx.input[0].previous_output.txid == node2_commitment_txid {
2397 let node_txn = test_txn_broadcast(&nodes[3], &chan_4, None, HTLCType::TIMEOUT);
2399 // Claim the payment on nodes[4], giving it knowledge of the preimage
2400 claim_funds!(nodes[4], nodes[3], payment_preimage_2, 3_000_000);
2402 connect_blocks(&nodes[4], TEST_FINAL_CLTV - CLTV_CLAIM_BUFFER + 2);
2403 let events = nodes[4].node.get_and_clear_pending_msg_events();
2404 assert_eq!(events.len(), 2);
2405 let close_chan_update_2 = match events[0] {
2406 MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
2409 _ => panic!("Unexpected event"),
2412 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { .. }, node_id } => {
2413 assert_eq!(node_id, nodes[3].node.get_our_node_id());
2415 _ => panic!("Unexpected event"),
2417 check_added_monitors!(nodes[4], 1);
2418 test_txn_broadcast(&nodes[4], &chan_4, None, HTLCType::SUCCESS);
2420 mine_transaction(&nodes[4], &node_txn[0]);
2421 check_preimage_claim(&nodes[4], &node_txn);
2422 (close_chan_update_1, close_chan_update_2)
2424 nodes[3].net_graph_msg_handler.handle_channel_update(&close_chan_update_2).unwrap();
2425 nodes[4].net_graph_msg_handler.handle_channel_update(&close_chan_update_1).unwrap();
2426 assert_eq!(nodes[3].node.list_channels().len(), 0);
2427 assert_eq!(nodes[4].node.list_channels().len(), 0);
2429 nodes[3].chain_monitor.chain_monitor.monitors.write().unwrap().insert(OutPoint { txid: chan_3.3.txid(), index: 0 }, chan_3_mon);
2433 fn test_justice_tx() {
2434 // Test justice txn built on revoked HTLC-Success tx, against both sides
2435 let mut alice_config = UserConfig::default();
2436 alice_config.channel_options.announced_channel = true;
2437 alice_config.peer_channel_config_limits.force_announced_channel_preference = false;
2438 alice_config.own_channel_config.our_to_self_delay = 6 * 24 * 5;
2439 let mut bob_config = UserConfig::default();
2440 bob_config.channel_options.announced_channel = true;
2441 bob_config.peer_channel_config_limits.force_announced_channel_preference = false;
2442 bob_config.own_channel_config.our_to_self_delay = 6 * 24 * 3;
2443 let user_cfgs = [Some(alice_config), Some(bob_config)];
2444 let mut chanmon_cfgs = create_chanmon_cfgs(2);
2445 chanmon_cfgs[0].keys_manager.disable_revocation_policy_check = true;
2446 chanmon_cfgs[1].keys_manager.disable_revocation_policy_check = true;
2447 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2448 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &user_cfgs);
2449 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2450 // Create some new channels:
2451 let chan_5 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2453 // A pending HTLC which will be revoked:
2454 let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
2455 // Get the will-be-revoked local txn from nodes[0]
2456 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_5.2);
2457 assert_eq!(revoked_local_txn.len(), 2); // First commitment tx, then HTLC tx
2458 assert_eq!(revoked_local_txn[0].input.len(), 1);
2459 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_5.3.txid());
2460 assert_eq!(revoked_local_txn[0].output.len(), 2); // Only HTLC and output back to 0 are present
2461 assert_eq!(revoked_local_txn[1].input.len(), 1);
2462 assert_eq!(revoked_local_txn[1].input[0].previous_output.txid, revoked_local_txn[0].txid());
2463 assert_eq!(revoked_local_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); // HTLC-Timeout
2464 // Revoke the old state
2465 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_3, 3_000_000);
2468 mine_transaction(&nodes[1], &revoked_local_txn[0]);
2470 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2471 assert_eq!(node_txn.len(), 2); // ChannelMonitor: penalty tx, ChannelManager: local commitment tx
2472 assert_eq!(node_txn[0].input.len(), 2); // We should claim the revoked output and the HTLC output
2474 check_spends!(node_txn[0], revoked_local_txn[0]);
2475 node_txn.swap_remove(0);
2476 node_txn.truncate(1);
2478 check_added_monitors!(nodes[1], 1);
2479 test_txn_broadcast(&nodes[1], &chan_5, None, HTLCType::NONE);
2481 mine_transaction(&nodes[0], &revoked_local_txn[0]);
2482 // Verify broadcast of revoked HTLC-timeout
2483 let node_txn = test_txn_broadcast(&nodes[0], &chan_5, Some(revoked_local_txn[0].clone()), HTLCType::TIMEOUT);
2484 check_added_monitors!(nodes[0], 1);
2485 // Broadcast revoked HTLC-timeout on node 1
2486 mine_transaction(&nodes[1], &node_txn[1]);
2487 test_revoked_htlc_claim_txn_broadcast(&nodes[1], node_txn[1].clone(), revoked_local_txn[0].clone());
2489 get_announce_close_broadcast_events(&nodes, 0, 1);
2491 assert_eq!(nodes[0].node.list_channels().len(), 0);
2492 assert_eq!(nodes[1].node.list_channels().len(), 0);
2494 // We test justice_tx build by A on B's revoked HTLC-Success tx
2495 // Create some new channels:
2496 let chan_6 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2498 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2502 // A pending HTLC which will be revoked:
2503 let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
2504 // Get the will-be-revoked local txn from B
2505 let revoked_local_txn = get_local_commitment_txn!(nodes[1], chan_6.2);
2506 assert_eq!(revoked_local_txn.len(), 1); // Only commitment tx
2507 assert_eq!(revoked_local_txn[0].input.len(), 1);
2508 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_6.3.txid());
2509 assert_eq!(revoked_local_txn[0].output.len(), 2); // Only HTLC and output back to A are present
2510 // Revoke the old state
2511 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_4, 3_000_000);
2513 mine_transaction(&nodes[0], &revoked_local_txn[0]);
2515 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
2516 assert_eq!(node_txn.len(), 2); //ChannelMonitor: penalty tx, ChannelManager: local commitment tx
2517 assert_eq!(node_txn[0].input.len(), 1); // We claim the received HTLC output
2519 check_spends!(node_txn[0], revoked_local_txn[0]);
2520 node_txn.swap_remove(0);
2522 check_added_monitors!(nodes[0], 1);
2523 test_txn_broadcast(&nodes[0], &chan_6, None, HTLCType::NONE);
2525 mine_transaction(&nodes[1], &revoked_local_txn[0]);
2526 let node_txn = test_txn_broadcast(&nodes[1], &chan_6, Some(revoked_local_txn[0].clone()), HTLCType::SUCCESS);
2527 check_added_monitors!(nodes[1], 1);
2528 mine_transaction(&nodes[0], &node_txn[1]);
2529 test_revoked_htlc_claim_txn_broadcast(&nodes[0], node_txn[1].clone(), revoked_local_txn[0].clone());
2531 get_announce_close_broadcast_events(&nodes, 0, 1);
2532 assert_eq!(nodes[0].node.list_channels().len(), 0);
2533 assert_eq!(nodes[1].node.list_channels().len(), 0);
2537 fn revoked_output_claim() {
2538 // Simple test to ensure a node will claim a revoked output when a stale remote commitment
2539 // transaction is broadcast by its counterparty
2540 let chanmon_cfgs = create_chanmon_cfgs(2);
2541 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2542 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2543 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2544 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2545 // node[0] is gonna to revoke an old state thus node[1] should be able to claim the revoked output
2546 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
2547 assert_eq!(revoked_local_txn.len(), 1);
2548 // Only output is the full channel value back to nodes[0]:
2549 assert_eq!(revoked_local_txn[0].output.len(), 1);
2550 // Send a payment through, updating everyone's latest commitment txn
2551 send_payment(&nodes[0], &vec!(&nodes[1])[..], 5000000, 5_000_000);
2553 // Inform nodes[1] that nodes[0] broadcast a stale tx
2554 mine_transaction(&nodes[1], &revoked_local_txn[0]);
2555 check_added_monitors!(nodes[1], 1);
2556 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2557 assert_eq!(node_txn.len(), 2); // ChannelMonitor: justice tx against revoked to_local output, ChannelManager: local commitment tx
2559 check_spends!(node_txn[0], revoked_local_txn[0]);
2560 check_spends!(node_txn[1], chan_1.3);
2562 // Inform nodes[0] that a watchtower cheated on its behalf, so it will force-close the chan
2563 mine_transaction(&nodes[0], &revoked_local_txn[0]);
2564 get_announce_close_broadcast_events(&nodes, 0, 1);
2565 check_added_monitors!(nodes[0], 1)
2569 fn claim_htlc_outputs_shared_tx() {
2570 // Node revoked old state, htlcs haven't time out yet, claim them in shared justice tx
2571 let mut chanmon_cfgs = create_chanmon_cfgs(2);
2572 chanmon_cfgs[0].keys_manager.disable_revocation_policy_check = true;
2573 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2574 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2575 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2577 // Create some new channel:
2578 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2580 // Rebalance the network to generate htlc in the two directions
2581 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
2582 // 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
2583 let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
2584 let (_payment_preimage_2, payment_hash_2, _) = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3000000);
2586 // Get the will-be-revoked local txn from node[0]
2587 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
2588 assert_eq!(revoked_local_txn.len(), 2); // commitment tx + 1 HTLC-Timeout tx
2589 assert_eq!(revoked_local_txn[0].input.len(), 1);
2590 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
2591 assert_eq!(revoked_local_txn[1].input.len(), 1);
2592 assert_eq!(revoked_local_txn[1].input[0].previous_output.txid, revoked_local_txn[0].txid());
2593 assert_eq!(revoked_local_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); // HTLC-Timeout
2594 check_spends!(revoked_local_txn[1], revoked_local_txn[0]);
2596 //Revoke the old state
2597 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_1, 3_000_000);
2600 mine_transaction(&nodes[0], &revoked_local_txn[0]);
2601 check_added_monitors!(nodes[0], 1);
2602 mine_transaction(&nodes[1], &revoked_local_txn[0]);
2603 check_added_monitors!(nodes[1], 1);
2604 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
2605 expect_payment_failed!(nodes[1], payment_hash_2, true);
2607 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2608 assert_eq!(node_txn.len(), 3); // ChannelMonitor: penalty tx, ChannelManager: local commitment + HTLC-timeout
2610 assert_eq!(node_txn[0].input.len(), 3); // Claim the revoked output + both revoked HTLC outputs
2611 check_spends!(node_txn[0], revoked_local_txn[0]);
2613 let mut witness_lens = BTreeSet::new();
2614 witness_lens.insert(node_txn[0].input[0].witness.last().unwrap().len());
2615 witness_lens.insert(node_txn[0].input[1].witness.last().unwrap().len());
2616 witness_lens.insert(node_txn[0].input[2].witness.last().unwrap().len());
2617 assert_eq!(witness_lens.len(), 3);
2618 assert_eq!(*witness_lens.iter().skip(0).next().unwrap(), 77); // revoked to_local
2619 assert_eq!(*witness_lens.iter().skip(1).next().unwrap(), OFFERED_HTLC_SCRIPT_WEIGHT); // revoked offered HTLC
2620 assert_eq!(*witness_lens.iter().skip(2).next().unwrap(), ACCEPTED_HTLC_SCRIPT_WEIGHT); // revoked received HTLC
2622 // Next nodes[1] broadcasts its current local tx state:
2623 assert_eq!(node_txn[1].input.len(), 1);
2624 assert_eq!(node_txn[1].input[0].previous_output.txid, chan_1.3.txid()); //Spending funding tx unique txouput, tx broadcasted by ChannelManager
2626 assert_eq!(node_txn[2].input.len(), 1);
2627 let witness_script = node_txn[2].clone().input[0].witness.pop().unwrap();
2628 assert_eq!(witness_script.len(), OFFERED_HTLC_SCRIPT_WEIGHT); //Spending an offered htlc output
2629 assert_eq!(node_txn[2].input[0].previous_output.txid, node_txn[1].txid());
2630 assert_ne!(node_txn[2].input[0].previous_output.txid, node_txn[0].input[0].previous_output.txid);
2631 assert_ne!(node_txn[2].input[0].previous_output.txid, node_txn[0].input[1].previous_output.txid);
2633 get_announce_close_broadcast_events(&nodes, 0, 1);
2634 assert_eq!(nodes[0].node.list_channels().len(), 0);
2635 assert_eq!(nodes[1].node.list_channels().len(), 0);
2639 fn claim_htlc_outputs_single_tx() {
2640 // Node revoked old state, htlcs have timed out, claim each of them in separated justice tx
2641 let mut chanmon_cfgs = create_chanmon_cfgs(2);
2642 chanmon_cfgs[0].keys_manager.disable_revocation_policy_check = true;
2643 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2644 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2645 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2647 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2649 // Rebalance the network to generate htlc in the two directions
2650 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
2651 // 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
2652 // time as two different claim transactions as we're gonna to timeout htlc with given a high current height
2653 let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
2654 let (_payment_preimage_2, payment_hash_2, _payment_secret_2) = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3000000);
2656 // Get the will-be-revoked local txn from node[0]
2657 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
2659 //Revoke the old state
2660 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_1, 3_000_000);
2663 confirm_transaction_at(&nodes[0], &revoked_local_txn[0], 100);
2664 check_added_monitors!(nodes[0], 1);
2665 confirm_transaction_at(&nodes[1], &revoked_local_txn[0], 100);
2666 check_added_monitors!(nodes[1], 1);
2667 expect_pending_htlcs_forwardable_ignore!(nodes[0]);
2669 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
2670 expect_payment_failed!(nodes[1], payment_hash_2, true);
2672 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2673 assert_eq!(node_txn.len(), 9);
2674 // ChannelMonitor: justice tx revoked offered htlc, justice tx revoked received htlc, justice tx revoked to_local (3)
2675 // ChannelManager: local commmitment + local HTLC-timeout (2)
2676 // 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)
2677 // ChannelMonitor: local commitment + local HTLC-timeout (2)
2679 // Check the pair local commitment and HTLC-timeout broadcast due to HTLC expiration
2680 assert_eq!(node_txn[0].input.len(), 1);
2681 check_spends!(node_txn[0], chan_1.3);
2682 assert_eq!(node_txn[1].input.len(), 1);
2683 let witness_script = node_txn[1].input[0].witness.last().unwrap();
2684 assert_eq!(witness_script.len(), OFFERED_HTLC_SCRIPT_WEIGHT); //Spending an offered htlc output
2685 check_spends!(node_txn[1], node_txn[0]);
2687 // Justice transactions are indices 1-2-4
2688 assert_eq!(node_txn[2].input.len(), 1);
2689 assert_eq!(node_txn[3].input.len(), 1);
2690 assert_eq!(node_txn[4].input.len(), 1);
2692 check_spends!(node_txn[2], revoked_local_txn[0]);
2693 check_spends!(node_txn[3], revoked_local_txn[0]);
2694 check_spends!(node_txn[4], revoked_local_txn[0]);
2696 let mut witness_lens = BTreeSet::new();
2697 witness_lens.insert(node_txn[2].input[0].witness.last().unwrap().len());
2698 witness_lens.insert(node_txn[3].input[0].witness.last().unwrap().len());
2699 witness_lens.insert(node_txn[4].input[0].witness.last().unwrap().len());
2700 assert_eq!(witness_lens.len(), 3);
2701 assert_eq!(*witness_lens.iter().skip(0).next().unwrap(), 77); // revoked to_local
2702 assert_eq!(*witness_lens.iter().skip(1).next().unwrap(), OFFERED_HTLC_SCRIPT_WEIGHT); // revoked offered HTLC
2703 assert_eq!(*witness_lens.iter().skip(2).next().unwrap(), ACCEPTED_HTLC_SCRIPT_WEIGHT); // revoked received HTLC
2705 get_announce_close_broadcast_events(&nodes, 0, 1);
2706 assert_eq!(nodes[0].node.list_channels().len(), 0);
2707 assert_eq!(nodes[1].node.list_channels().len(), 0);
2711 fn test_htlc_on_chain_success() {
2712 // Test that in case of a unilateral close onchain, we detect the state of output and pass
2713 // the preimage backward accordingly. So here we test that ChannelManager is
2714 // broadcasting the right event to other nodes in payment path.
2715 // We test with two HTLCs simultaneously as that was not handled correctly in the past.
2716 // A --------------------> B ----------------------> C (preimage)
2717 // First, C should claim the HTLC outputs via HTLC-Success when its own latest local
2718 // commitment transaction was broadcast.
2719 // Then, B should learn the preimage from said transactions, attempting to claim backwards
2721 // B should be able to claim via preimage if A then broadcasts its local tx.
2722 // Finally, when A sees B's latest local commitment transaction it should be able to claim
2723 // the HTLC outputs via the preimage it learned (which, once confirmed should generate a
2724 // PaymentSent event).
2726 let chanmon_cfgs = create_chanmon_cfgs(3);
2727 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
2728 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
2729 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
2731 // Create some initial channels
2732 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2733 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
2735 // Rebalance the network a bit by relaying one payment through all the channels...
2736 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000, 8_000_000);
2737 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000, 8_000_000);
2739 let (our_payment_preimage, _payment_hash, _payment_secret) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
2740 let (our_payment_preimage_2, _payment_hash_2, _payment_secret_2) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
2742 // Broadcast legit commitment tx from C on B's chain
2743 // Broadcast HTLC Success transaction by C on received output from C's commitment tx on B's chain
2744 let commitment_tx = get_local_commitment_txn!(nodes[2], chan_2.2);
2745 assert_eq!(commitment_tx.len(), 1);
2746 check_spends!(commitment_tx[0], chan_2.3);
2747 nodes[2].node.claim_funds(our_payment_preimage, &None, 3_000_000);
2748 nodes[2].node.claim_funds(our_payment_preimage_2, &None, 3_000_000);
2749 check_added_monitors!(nodes[2], 2);
2750 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
2751 assert!(updates.update_add_htlcs.is_empty());
2752 assert!(updates.update_fail_htlcs.is_empty());
2753 assert!(updates.update_fail_malformed_htlcs.is_empty());
2754 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
2756 mine_transaction(&nodes[2], &commitment_tx[0]);
2757 check_closed_broadcast!(nodes[2], true);
2758 check_added_monitors!(nodes[2], 1);
2759 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)
2760 assert_eq!(node_txn.len(), 5);
2761 assert_eq!(node_txn[0], node_txn[3]);
2762 assert_eq!(node_txn[1], node_txn[4]);
2763 assert_eq!(node_txn[2], commitment_tx[0]);
2764 check_spends!(node_txn[0], commitment_tx[0]);
2765 check_spends!(node_txn[1], commitment_tx[0]);
2766 assert_eq!(node_txn[0].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
2767 assert_eq!(node_txn[1].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
2768 assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2769 assert!(node_txn[1].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2770 assert_eq!(node_txn[0].lock_time, 0);
2771 assert_eq!(node_txn[1].lock_time, 0);
2773 // Verify that B's ChannelManager is able to extract preimage from HTLC Success tx and pass it backward
2774 let header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
2775 connect_block(&nodes[1], &Block { header, txdata: node_txn});
2777 let mut added_monitors = nodes[1].chain_monitor.added_monitors.lock().unwrap();
2778 assert_eq!(added_monitors.len(), 1);
2779 assert_eq!(added_monitors[0].0.txid, chan_2.3.txid());
2780 added_monitors.clear();
2782 let events = nodes[1].node.get_and_clear_pending_msg_events();
2784 let mut added_monitors = nodes[1].chain_monitor.added_monitors.lock().unwrap();
2785 assert_eq!(added_monitors.len(), 2);
2786 assert_eq!(added_monitors[0].0.txid, chan_1.3.txid());
2787 assert_eq!(added_monitors[1].0.txid, chan_1.3.txid());
2788 added_monitors.clear();
2790 assert_eq!(events.len(), 3);
2792 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
2793 _ => panic!("Unexpected event"),
2796 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { .. }, node_id: _ } => {},
2797 _ => panic!("Unexpected event"),
2801 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, .. } } => {
2802 assert!(update_add_htlcs.is_empty());
2803 assert!(update_fail_htlcs.is_empty());
2804 assert_eq!(update_fulfill_htlcs.len(), 1);
2805 assert!(update_fail_malformed_htlcs.is_empty());
2806 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
2808 _ => panic!("Unexpected event"),
2810 macro_rules! check_tx_local_broadcast {
2811 ($node: expr, $htlc_offered: expr, $commitment_tx: expr, $chan_tx: expr) => { {
2812 let mut node_txn = $node.tx_broadcaster.txn_broadcasted.lock().unwrap();
2813 assert_eq!(node_txn.len(), 5);
2814 // Node[1]: ChannelManager: 3 (commitment tx, 2*HTLC-Timeout tx), ChannelMonitor: 2 (timeout tx)
2815 // Node[0]: ChannelManager: 3 (commtiemtn tx, 2*HTLC-Timeout tx), ChannelMonitor: 2 HTLC-timeout
2816 check_spends!(node_txn[0], $commitment_tx);
2817 check_spends!(node_txn[1], $commitment_tx);
2818 assert_ne!(node_txn[0].lock_time, 0);
2819 assert_ne!(node_txn[1].lock_time, 0);
2821 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2822 assert_eq!(node_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2823 assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2824 assert!(node_txn[1].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2826 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
2827 assert_eq!(node_txn[1].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
2828 assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
2829 assert!(node_txn[1].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
2831 check_spends!(node_txn[2], $chan_tx);
2832 check_spends!(node_txn[3], node_txn[2]);
2833 check_spends!(node_txn[4], node_txn[2]);
2834 assert_eq!(node_txn[2].input[0].witness.last().unwrap().len(), 71);
2835 assert_eq!(node_txn[3].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2836 assert_eq!(node_txn[4].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2837 assert!(node_txn[3].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2838 assert!(node_txn[4].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2839 assert_ne!(node_txn[3].lock_time, 0);
2840 assert_ne!(node_txn[4].lock_time, 0);
2844 // nodes[1] now broadcasts its own local state as a fallback, suggesting an alternate
2845 // commitment transaction with a corresponding HTLC-Timeout transactions, as well as a
2846 // timeout-claim of the output that nodes[2] just claimed via success.
2847 check_tx_local_broadcast!(nodes[1], false, commitment_tx[0], chan_2.3);
2849 // Broadcast legit commitment tx from A on B's chain
2850 // Broadcast preimage tx by B on offered output from A commitment tx on A's chain
2851 let commitment_tx = get_local_commitment_txn!(nodes[0], chan_1.2);
2852 check_spends!(commitment_tx[0], chan_1.3);
2853 mine_transaction(&nodes[1], &commitment_tx[0]);
2854 check_closed_broadcast!(nodes[1], true);
2855 check_added_monitors!(nodes[1], 1);
2856 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 3 (commitment tx + HTLC-Sucess * 2), ChannelMonitor : 1 (HTLC-Success)
2857 assert_eq!(node_txn.len(), 4);
2858 check_spends!(node_txn[0], commitment_tx[0]);
2859 assert_eq!(node_txn[0].input.len(), 2);
2860 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2861 assert_eq!(node_txn[0].input[1].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2862 assert_eq!(node_txn[0].lock_time, 0);
2863 assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
2864 check_spends!(node_txn[1], chan_1.3);
2865 assert_eq!(node_txn[1].input[0].witness.clone().last().unwrap().len(), 71);
2866 check_spends!(node_txn[2], node_txn[1]);
2867 check_spends!(node_txn[3], node_txn[1]);
2868 // We don't bother to check that B can claim the HTLC output on its commitment tx here as
2869 // we already checked the same situation with A.
2871 // Verify that A's ChannelManager is able to extract preimage from preimage tx and generate PaymentSent
2872 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[0].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
2873 connect_block(&nodes[0], &Block { header, txdata: vec![commitment_tx[0].clone(), node_txn[0].clone()] });
2874 check_closed_broadcast!(nodes[0], true);
2875 check_added_monitors!(nodes[0], 1);
2876 let events = nodes[0].node.get_and_clear_pending_events();
2877 assert_eq!(events.len(), 2);
2878 let mut first_claimed = false;
2879 for event in events {
2881 Event::PaymentSent { payment_preimage } => {
2882 if payment_preimage == our_payment_preimage {
2883 assert!(!first_claimed);
2884 first_claimed = true;
2886 assert_eq!(payment_preimage, our_payment_preimage_2);
2889 _ => panic!("Unexpected event"),
2892 check_tx_local_broadcast!(nodes[0], true, commitment_tx[0], chan_1.3);
2895 fn do_test_htlc_on_chain_timeout(connect_style: ConnectStyle) {
2896 // Test that in case of a unilateral close onchain, we detect the state of output and
2897 // timeout the HTLC backward accordingly. So here we test that ChannelManager is
2898 // broadcasting the right event to other nodes in payment path.
2899 // A ------------------> B ----------------------> C (timeout)
2900 // B's commitment tx C's commitment tx
2902 // B's HTLC timeout tx B's timeout tx
2904 let chanmon_cfgs = create_chanmon_cfgs(3);
2905 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
2906 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
2907 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
2908 *nodes[0].connect_style.borrow_mut() = connect_style;
2909 *nodes[1].connect_style.borrow_mut() = connect_style;
2910 *nodes[2].connect_style.borrow_mut() = connect_style;
2912 // Create some intial channels
2913 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2914 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
2916 // Rebalance the network a bit by relaying one payment thorugh all the channels...
2917 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000, 8_000_000);
2918 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000, 8_000_000);
2920 let (_payment_preimage, payment_hash, _payment_secret) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
2922 // Broadcast legit commitment tx from C on B's chain
2923 let commitment_tx = get_local_commitment_txn!(nodes[2], chan_2.2);
2924 check_spends!(commitment_tx[0], chan_2.3);
2925 nodes[2].node.fail_htlc_backwards(&payment_hash, &None);
2926 check_added_monitors!(nodes[2], 0);
2927 expect_pending_htlcs_forwardable!(nodes[2]);
2928 check_added_monitors!(nodes[2], 1);
2930 let events = nodes[2].node.get_and_clear_pending_msg_events();
2931 assert_eq!(events.len(), 1);
2933 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, .. } } => {
2934 assert!(update_add_htlcs.is_empty());
2935 assert!(!update_fail_htlcs.is_empty());
2936 assert!(update_fulfill_htlcs.is_empty());
2937 assert!(update_fail_malformed_htlcs.is_empty());
2938 assert_eq!(nodes[1].node.get_our_node_id(), *node_id);
2940 _ => panic!("Unexpected event"),
2942 mine_transaction(&nodes[2], &commitment_tx[0]);
2943 check_closed_broadcast!(nodes[2], true);
2944 check_added_monitors!(nodes[2], 1);
2945 let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 1 (commitment tx)
2946 assert_eq!(node_txn.len(), 1);
2947 check_spends!(node_txn[0], chan_2.3);
2948 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), 71);
2950 // Broadcast timeout transaction by B on received output from C's commitment tx on B's chain
2951 // Verify that B's ChannelManager is able to detect that HTLC is timeout by its own tx and react backward in consequence
2952 connect_blocks(&nodes[1], 200 - nodes[2].best_block_info().1);
2953 mine_transaction(&nodes[1], &commitment_tx[0]);
2956 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2957 assert_eq!(node_txn.len(), 5); // ChannelManager : 2 (commitment tx, HTLC-Timeout tx), ChannelMonitor : 2 (local commitment tx + HTLC-timeout), 1 timeout tx
2958 assert_eq!(node_txn[0], node_txn[3]);
2959 assert_eq!(node_txn[1], node_txn[4]);
2961 check_spends!(node_txn[2], commitment_tx[0]);
2962 assert_eq!(node_txn[2].clone().input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
2964 check_spends!(node_txn[0], chan_2.3);
2965 check_spends!(node_txn[1], node_txn[0]);
2966 assert_eq!(node_txn[0].clone().input[0].witness.last().unwrap().len(), 71);
2967 assert_eq!(node_txn[1].clone().input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2969 timeout_tx = node_txn[2].clone();
2973 mine_transaction(&nodes[1], &timeout_tx);
2974 check_added_monitors!(nodes[1], 1);
2975 check_closed_broadcast!(nodes[1], true);
2977 // B will rebroadcast a fee-bumped timeout transaction here.
2978 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
2979 assert_eq!(node_txn.len(), 1);
2980 check_spends!(node_txn[0], commitment_tx[0]);
2983 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
2985 // B will rebroadcast its own holder commitment transaction here...just because
2986 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
2987 assert_eq!(node_txn.len(), 1);
2988 check_spends!(node_txn[0], chan_2.3);
2991 expect_pending_htlcs_forwardable!(nodes[1]);
2992 check_added_monitors!(nodes[1], 1);
2993 let events = nodes[1].node.get_and_clear_pending_msg_events();
2994 assert_eq!(events.len(), 1);
2996 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, .. } } => {
2997 assert!(update_add_htlcs.is_empty());
2998 assert!(!update_fail_htlcs.is_empty());
2999 assert!(update_fulfill_htlcs.is_empty());
3000 assert!(update_fail_malformed_htlcs.is_empty());
3001 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
3003 _ => panic!("Unexpected event"),
3006 // Broadcast legit commitment tx from B on A's chain
3007 let commitment_tx = get_local_commitment_txn!(nodes[1], chan_1.2);
3008 check_spends!(commitment_tx[0], chan_1.3);
3010 mine_transaction(&nodes[0], &commitment_tx[0]);
3012 check_closed_broadcast!(nodes[0], true);
3013 check_added_monitors!(nodes[0], 1);
3014 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 2 (commitment tx, HTLC-Timeout tx), ChannelMonitor : 1 timeout tx
3015 assert_eq!(node_txn.len(), 3);
3016 check_spends!(node_txn[0], commitment_tx[0]);
3017 assert_eq!(node_txn[0].clone().input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
3018 check_spends!(node_txn[1], chan_1.3);
3019 check_spends!(node_txn[2], node_txn[1]);
3020 assert_eq!(node_txn[1].clone().input[0].witness.last().unwrap().len(), 71);
3021 assert_eq!(node_txn[2].clone().input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
3025 fn test_htlc_on_chain_timeout() {
3026 do_test_htlc_on_chain_timeout(ConnectStyle::BestBlockFirstSkippingBlocks);
3027 do_test_htlc_on_chain_timeout(ConnectStyle::TransactionsFirstSkippingBlocks);
3028 do_test_htlc_on_chain_timeout(ConnectStyle::FullBlockViaListen);
3032 fn test_simple_commitment_revoked_fail_backward() {
3033 // Test that in case of a revoked commitment tx, we detect the resolution of output by justice tx
3034 // and fail backward accordingly.
3036 let chanmon_cfgs = create_chanmon_cfgs(3);
3037 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
3038 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
3039 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
3041 // Create some initial channels
3042 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3043 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
3045 let (payment_preimage, _payment_hash, _payment_secret) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000);
3046 // Get the will-be-revoked local txn from nodes[2]
3047 let revoked_local_txn = get_local_commitment_txn!(nodes[2], chan_2.2);
3048 // Revoke the old state
3049 claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage, 3_000_000);
3051 let (_, payment_hash, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000);
3053 mine_transaction(&nodes[1], &revoked_local_txn[0]);
3054 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
3055 check_added_monitors!(nodes[1], 1);
3056 check_closed_broadcast!(nodes[1], true);
3058 expect_pending_htlcs_forwardable!(nodes[1]);
3059 check_added_monitors!(nodes[1], 1);
3060 let events = nodes[1].node.get_and_clear_pending_msg_events();
3061 assert_eq!(events.len(), 1);
3063 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, .. } } => {
3064 assert!(update_add_htlcs.is_empty());
3065 assert_eq!(update_fail_htlcs.len(), 1);
3066 assert!(update_fulfill_htlcs.is_empty());
3067 assert!(update_fail_malformed_htlcs.is_empty());
3068 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
3070 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]);
3071 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false, true);
3073 let events = nodes[0].node.get_and_clear_pending_msg_events();
3074 assert_eq!(events.len(), 1);
3076 MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
3077 _ => panic!("Unexpected event"),
3079 expect_payment_failed!(nodes[0], payment_hash, false);
3081 _ => panic!("Unexpected event"),
3085 fn do_test_commitment_revoked_fail_backward_exhaustive(deliver_bs_raa: bool, use_dust: bool, no_to_remote: bool) {
3086 // Test that if our counterparty broadcasts a revoked commitment transaction we fail all
3087 // pending HTLCs on that channel backwards even if the HTLCs aren't present in our latest
3088 // commitment transaction anymore.
3089 // To do this, we have the peer which will broadcast a revoked commitment transaction send
3090 // a number of update_fail/commitment_signed updates without ever sending the RAA in
3091 // response to our commitment_signed. This is somewhat misbehavior-y, though not
3092 // technically disallowed and we should probably handle it reasonably.
3093 // Note that this is pretty exhaustive as an outbound HTLC which we haven't yet
3094 // failed/fulfilled backwards must be in at least one of the latest two remote commitment
3096 // * Once we move it out of our holding cell/add it, we will immediately include it in a
3097 // commitment_signed (implying it will be in the latest remote commitment transaction).
3098 // * Once they remove it, we will send a (the first) commitment_signed without the HTLC,
3099 // and once they revoke the previous commitment transaction (allowing us to send a new
3100 // commitment_signed) we will be free to fail/fulfill the HTLC backwards.
3101 let chanmon_cfgs = create_chanmon_cfgs(3);
3102 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
3103 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
3104 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
3106 // Create some initial channels
3107 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3108 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
3110 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 });
3111 // Get the will-be-revoked local txn from nodes[2]
3112 let revoked_local_txn = get_local_commitment_txn!(nodes[2], chan_2.2);
3113 assert_eq!(revoked_local_txn[0].output.len(), if no_to_remote { 1 } else { 2 });
3114 // Revoke the old state
3115 claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage, if no_to_remote { 10_000 } else { 3_000_000});
3117 let value = if use_dust {
3118 // The dust limit applied to HTLC outputs considers the fee of the HTLC transaction as
3119 // well, so HTLCs at exactly the dust limit will not be included in commitment txn.
3120 nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().holder_dust_limit_satoshis * 1000
3123 let (_, first_payment_hash, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], value);
3124 let (_, second_payment_hash, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], value);
3125 let (_, third_payment_hash, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], value);
3127 assert!(nodes[2].node.fail_htlc_backwards(&first_payment_hash, &None));
3128 expect_pending_htlcs_forwardable!(nodes[2]);
3129 check_added_monitors!(nodes[2], 1);
3130 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
3131 assert!(updates.update_add_htlcs.is_empty());
3132 assert!(updates.update_fulfill_htlcs.is_empty());
3133 assert!(updates.update_fail_malformed_htlcs.is_empty());
3134 assert_eq!(updates.update_fail_htlcs.len(), 1);
3135 assert!(updates.update_fee.is_none());
3136 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
3137 let bs_raa = commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false, true, false, true);
3138 // Drop the last RAA from 3 -> 2
3140 assert!(nodes[2].node.fail_htlc_backwards(&second_payment_hash, &None));
3141 expect_pending_htlcs_forwardable!(nodes[2]);
3142 check_added_monitors!(nodes[2], 1);
3143 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
3144 assert!(updates.update_add_htlcs.is_empty());
3145 assert!(updates.update_fulfill_htlcs.is_empty());
3146 assert!(updates.update_fail_malformed_htlcs.is_empty());
3147 assert_eq!(updates.update_fail_htlcs.len(), 1);
3148 assert!(updates.update_fee.is_none());
3149 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
3150 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &updates.commitment_signed);
3151 check_added_monitors!(nodes[1], 1);
3152 // Note that nodes[1] is in AwaitingRAA, so won't send a CS
3153 let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
3154 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa);
3155 check_added_monitors!(nodes[2], 1);
3157 assert!(nodes[2].node.fail_htlc_backwards(&third_payment_hash, &None));
3158 expect_pending_htlcs_forwardable!(nodes[2]);
3159 check_added_monitors!(nodes[2], 1);
3160 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
3161 assert!(updates.update_add_htlcs.is_empty());
3162 assert!(updates.update_fulfill_htlcs.is_empty());
3163 assert!(updates.update_fail_malformed_htlcs.is_empty());
3164 assert_eq!(updates.update_fail_htlcs.len(), 1);
3165 assert!(updates.update_fee.is_none());
3166 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
3167 // At this point first_payment_hash has dropped out of the latest two commitment
3168 // transactions that nodes[1] is tracking...
3169 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &updates.commitment_signed);
3170 check_added_monitors!(nodes[1], 1);
3171 // Note that nodes[1] is (still) in AwaitingRAA, so won't send a CS
3172 let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
3173 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa);
3174 check_added_monitors!(nodes[2], 1);
3176 // Add a fourth HTLC, this one will get sequestered away in nodes[1]'s holding cell waiting
3177 // on nodes[2]'s RAA.
3178 let (_, fourth_payment_hash, fourth_payment_secret) = get_payment_preimage_hash!(nodes[2]);
3179 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
3180 let logger = test_utils::TestLogger::new();
3181 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();
3182 nodes[1].node.send_payment(&route, fourth_payment_hash, &Some(fourth_payment_secret)).unwrap();
3183 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
3184 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
3185 check_added_monitors!(nodes[1], 0);
3188 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_raa);
3189 // One monitor for the new revocation preimage, no second on as we won't generate a new
3190 // commitment transaction for nodes[0] until process_pending_htlc_forwards().
3191 check_added_monitors!(nodes[1], 1);
3192 let events = nodes[1].node.get_and_clear_pending_events();
3193 assert_eq!(events.len(), 1);
3195 Event::PendingHTLCsForwardable { .. } => { },
3196 _ => panic!("Unexpected event"),
3198 // Deliberately don't process the pending fail-back so they all fail back at once after
3199 // block connection just like the !deliver_bs_raa case
3202 let mut failed_htlcs = HashSet::new();
3203 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
3205 mine_transaction(&nodes[1], &revoked_local_txn[0]);
3206 check_added_monitors!(nodes[1], 1);
3207 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
3209 let events = nodes[1].node.get_and_clear_pending_events();
3210 assert_eq!(events.len(), if deliver_bs_raa { 1 } else { 2 });
3212 Event::PaymentFailed { ref payment_hash, .. } => {
3213 assert_eq!(*payment_hash, fourth_payment_hash);
3215 _ => panic!("Unexpected event"),
3217 if !deliver_bs_raa {
3219 Event::PendingHTLCsForwardable { .. } => { },
3220 _ => panic!("Unexpected event"),
3223 nodes[1].node.process_pending_htlc_forwards();
3224 check_added_monitors!(nodes[1], 1);
3226 let events = nodes[1].node.get_and_clear_pending_msg_events();
3227 assert_eq!(events.len(), if deliver_bs_raa { 4 } else { 3 });
3228 match events[if deliver_bs_raa { 1 } else { 0 }] {
3229 MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {},
3230 _ => panic!("Unexpected event"),
3232 match events[if deliver_bs_raa { 2 } else { 1 }] {
3233 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { msg: msgs::ErrorMessage { channel_id, ref data } }, node_id: _ } => {
3234 assert_eq!(channel_id, chan_2.2);
3235 assert_eq!(data.as_str(), "Commitment or closing transaction was confirmed on chain.");
3237 _ => panic!("Unexpected event"),
3241 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, .. } } => {
3242 assert_eq!(nodes[2].node.get_our_node_id(), *node_id);
3243 assert_eq!(update_add_htlcs.len(), 1);
3244 assert!(update_fulfill_htlcs.is_empty());
3245 assert!(update_fail_htlcs.is_empty());
3246 assert!(update_fail_malformed_htlcs.is_empty());
3248 _ => panic!("Unexpected event"),
3251 match events[if deliver_bs_raa { 3 } else { 2 }] {
3252 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, .. } } => {
3253 assert!(update_add_htlcs.is_empty());
3254 assert_eq!(update_fail_htlcs.len(), 3);
3255 assert!(update_fulfill_htlcs.is_empty());
3256 assert!(update_fail_malformed_htlcs.is_empty());
3257 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
3259 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]);
3260 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[1]);
3261 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[2]);
3263 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false, true);
3265 let events = nodes[0].node.get_and_clear_pending_msg_events();
3266 // If we delivered B's RAA we got an unknown preimage error, not something
3267 // that we should update our routing table for.
3268 assert_eq!(events.len(), if deliver_bs_raa { 2 } else { 3 });
3269 for event in events {
3271 MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
3272 _ => panic!("Unexpected event"),
3275 let events = nodes[0].node.get_and_clear_pending_events();
3276 assert_eq!(events.len(), 3);
3278 Event::PaymentFailed { ref payment_hash, .. } => {
3279 assert!(failed_htlcs.insert(payment_hash.0));
3281 _ => panic!("Unexpected event"),
3284 Event::PaymentFailed { ref payment_hash, .. } => {
3285 assert!(failed_htlcs.insert(payment_hash.0));
3287 _ => panic!("Unexpected event"),
3290 Event::PaymentFailed { ref payment_hash, .. } => {
3291 assert!(failed_htlcs.insert(payment_hash.0));
3293 _ => panic!("Unexpected event"),
3296 _ => panic!("Unexpected event"),
3299 assert!(failed_htlcs.contains(&first_payment_hash.0));
3300 assert!(failed_htlcs.contains(&second_payment_hash.0));
3301 assert!(failed_htlcs.contains(&third_payment_hash.0));
3305 fn test_commitment_revoked_fail_backward_exhaustive_a() {
3306 do_test_commitment_revoked_fail_backward_exhaustive(false, true, false);
3307 do_test_commitment_revoked_fail_backward_exhaustive(true, true, false);
3308 do_test_commitment_revoked_fail_backward_exhaustive(false, false, false);
3309 do_test_commitment_revoked_fail_backward_exhaustive(true, false, false);
3313 fn test_commitment_revoked_fail_backward_exhaustive_b() {
3314 do_test_commitment_revoked_fail_backward_exhaustive(false, true, true);
3315 do_test_commitment_revoked_fail_backward_exhaustive(true, true, true);
3316 do_test_commitment_revoked_fail_backward_exhaustive(false, false, true);
3317 do_test_commitment_revoked_fail_backward_exhaustive(true, false, true);
3321 fn fail_backward_pending_htlc_upon_channel_failure() {
3322 let chanmon_cfgs = create_chanmon_cfgs(2);
3323 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3324 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3325 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3326 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 500_000_000, InitFeatures::known(), InitFeatures::known());
3327 let logger = test_utils::TestLogger::new();
3329 // Alice -> Bob: Route a payment but without Bob sending revoke_and_ack.
3331 let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[1]);
3332 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3333 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();
3334 nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
3335 check_added_monitors!(nodes[0], 1);
3337 let payment_event = {
3338 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
3339 assert_eq!(events.len(), 1);
3340 SendEvent::from_event(events.remove(0))
3342 assert_eq!(payment_event.node_id, nodes[1].node.get_our_node_id());
3343 assert_eq!(payment_event.msgs.len(), 1);
3346 // Alice -> Bob: Route another payment but now Alice waits for Bob's earlier revoke_and_ack.
3347 let (_, failed_payment_hash, failed_payment_secret) = get_payment_preimage_hash!(nodes[1]);
3349 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3350 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();
3351 nodes[0].node.send_payment(&route, failed_payment_hash, &Some(failed_payment_secret)).unwrap();
3352 check_added_monitors!(nodes[0], 0);
3354 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
3357 // Alice <- Bob: Send a malformed update_add_htlc so Alice fails the channel.
3359 let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[0]);
3361 let secp_ctx = Secp256k1::new();
3362 let session_priv = SecretKey::from_slice(&[42; 32]).unwrap();
3363 let current_height = nodes[1].node.best_block.read().unwrap().height() + 1;
3364 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
3365 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();
3366 let (onion_payloads, _amount_msat, cltv_expiry) = onion_utils::build_onion_payloads(&route.paths[0], 50_000, &Some(payment_secret), current_height).unwrap();
3367 let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route.paths[0], &session_priv).unwrap();
3368 let onion_routing_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &payment_hash);
3370 // Send a 0-msat update_add_htlc to fail the channel.
3371 let update_add_htlc = msgs::UpdateAddHTLC {
3377 onion_routing_packet,
3379 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &update_add_htlc);
3382 // Check that Alice fails backward the pending HTLC from the second payment.
3383 expect_payment_failed!(nodes[0], failed_payment_hash, true);
3384 check_closed_broadcast!(nodes[0], true);
3385 check_added_monitors!(nodes[0], 1);
3389 fn test_htlc_ignore_latest_remote_commitment() {
3390 // Test that HTLC transactions spending the latest remote commitment transaction are simply
3391 // ignored if we cannot claim them. This originally tickled an invalid unwrap().
3392 let chanmon_cfgs = create_chanmon_cfgs(2);
3393 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3394 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3395 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3396 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3398 route_payment(&nodes[0], &[&nodes[1]], 10000000);
3399 nodes[0].node.force_close_channel(&nodes[0].node.list_channels()[0].channel_id).unwrap();
3400 check_closed_broadcast!(nodes[0], true);
3401 check_added_monitors!(nodes[0], 1);
3403 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
3404 assert_eq!(node_txn.len(), 2);
3406 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3407 connect_block(&nodes[1], &Block { header, txdata: vec![node_txn[0].clone(), node_txn[1].clone()]});
3408 check_closed_broadcast!(nodes[1], true);
3409 check_added_monitors!(nodes[1], 1);
3411 // Duplicate the connect_block call since this may happen due to other listeners
3412 // registering new transactions
3413 header.prev_blockhash = header.block_hash();
3414 connect_block(&nodes[1], &Block { header, txdata: vec![node_txn[0].clone(), node_txn[1].clone()]});
3418 fn test_force_close_fail_back() {
3419 // Check which HTLCs are failed-backwards on channel force-closure
3420 let chanmon_cfgs = create_chanmon_cfgs(3);
3421 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
3422 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
3423 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
3424 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3425 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
3426 let logger = test_utils::TestLogger::new();
3428 let (our_payment_preimage, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[2]);
3430 let mut payment_event = {
3431 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3432 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();
3433 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
3434 check_added_monitors!(nodes[0], 1);
3436 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
3437 assert_eq!(events.len(), 1);
3438 SendEvent::from_event(events.remove(0))
3441 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
3442 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
3444 expect_pending_htlcs_forwardable!(nodes[1]);
3446 let mut events_2 = nodes[1].node.get_and_clear_pending_msg_events();
3447 assert_eq!(events_2.len(), 1);
3448 payment_event = SendEvent::from_event(events_2.remove(0));
3449 assert_eq!(payment_event.msgs.len(), 1);
3451 check_added_monitors!(nodes[1], 1);
3452 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]);
3453 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg);
3454 check_added_monitors!(nodes[2], 1);
3455 let (_, _) = get_revoke_commit_msgs!(nodes[2], nodes[1].node.get_our_node_id());
3457 // nodes[2] now has the latest commitment transaction, but hasn't revoked its previous
3458 // state or updated nodes[1]' state. Now force-close and broadcast that commitment/HTLC
3459 // transaction and ensure nodes[1] doesn't fail-backwards (this was originally a bug!).
3461 nodes[2].node.force_close_channel(&payment_event.commitment_msg.channel_id).unwrap();
3462 check_closed_broadcast!(nodes[2], true);
3463 check_added_monitors!(nodes[2], 1);
3465 let mut node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap();
3466 // Note that we don't bother broadcasting the HTLC-Success transaction here as we don't
3467 // have a use for it unless nodes[2] learns the preimage somehow, the funds will go
3468 // back to nodes[1] upon timeout otherwise.
3469 assert_eq!(node_txn.len(), 1);
3473 mine_transaction(&nodes[1], &tx);
3475 // Note no UpdateHTLCs event here from nodes[1] to nodes[0]!
3476 check_closed_broadcast!(nodes[1], true);
3477 check_added_monitors!(nodes[1], 1);
3479 // Now check that if we add the preimage to ChannelMonitor it broadcasts our HTLC-Success..
3481 let mut monitors = nodes[2].chain_monitor.chain_monitor.monitors.read().unwrap();
3482 monitors.get(&OutPoint{ txid: Txid::from_slice(&payment_event.commitment_msg.channel_id[..]).unwrap(), index: 0 }).unwrap()
3483 .provide_payment_preimage(&our_payment_hash, &our_payment_preimage, &node_cfgs[2].tx_broadcaster, &node_cfgs[2].fee_estimator, &&logger);
3485 mine_transaction(&nodes[2], &tx);
3486 let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap();
3487 assert_eq!(node_txn.len(), 1);
3488 assert_eq!(node_txn[0].input.len(), 1);
3489 assert_eq!(node_txn[0].input[0].previous_output.txid, tx.txid());
3490 assert_eq!(node_txn[0].lock_time, 0); // Must be an HTLC-Success
3491 assert_eq!(node_txn[0].input[0].witness.len(), 5); // Must be an HTLC-Success
3493 check_spends!(node_txn[0], tx);
3497 fn test_simple_peer_disconnect() {
3498 // Test that we can reconnect when there are no lost messages
3499 let chanmon_cfgs = create_chanmon_cfgs(3);
3500 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
3501 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
3502 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
3503 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3504 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
3506 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3507 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3508 reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3510 let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0;
3511 let payment_hash_2 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1;
3512 fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_hash_2);
3513 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_preimage_1, 1_000_000);
3515 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3516 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3517 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3519 let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0;
3520 let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0;
3521 let payment_hash_5 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1;
3522 let payment_hash_6 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1;
3524 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3525 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3527 claim_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[2]]], true, payment_preimage_3, 1_000_000);
3528 fail_payment_along_route(&nodes[0], &[&nodes[1], &nodes[2]], true, payment_hash_5);
3530 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (1, 0), (1, 0), (false, false));
3532 let events = nodes[0].node.get_and_clear_pending_events();
3533 assert_eq!(events.len(), 2);
3535 Event::PaymentSent { payment_preimage } => {
3536 assert_eq!(payment_preimage, payment_preimage_3);
3538 _ => panic!("Unexpected event"),
3541 Event::PaymentFailed { payment_hash, rejected_by_dest, .. } => {
3542 assert_eq!(payment_hash, payment_hash_5);
3543 assert!(rejected_by_dest);
3545 _ => panic!("Unexpected event"),
3549 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_preimage_4, 1_000_000);
3550 fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_hash_6);
3553 fn do_test_drop_messages_peer_disconnect(messages_delivered: u8) {
3554 // Test that we can reconnect when in-flight HTLC updates get dropped
3555 let chanmon_cfgs = create_chanmon_cfgs(2);
3556 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3557 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3558 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3559 if messages_delivered == 0 {
3560 create_chan_between_nodes_with_value_a(&nodes[0], &nodes[1], 100000, 10001, InitFeatures::known(), InitFeatures::known());
3561 // nodes[1] doesn't receive the funding_locked message (it'll be re-sent on reconnect)
3563 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3566 let (payment_preimage_1, payment_hash_1, payment_secret_1) = get_payment_preimage_hash!(nodes[1]);
3568 let logger = test_utils::TestLogger::new();
3569 let payment_event = {
3570 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3571 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(),
3572 &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), Some(&nodes[0].node.list_usable_channels().iter().collect::<Vec<_>>()),
3573 &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
3574 nodes[0].node.send_payment(&route, payment_hash_1, &Some(payment_secret_1)).unwrap();
3575 check_added_monitors!(nodes[0], 1);
3577 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
3578 assert_eq!(events.len(), 1);
3579 SendEvent::from_event(events.remove(0))
3581 assert_eq!(nodes[1].node.get_our_node_id(), payment_event.node_id);
3583 if messages_delivered < 2 {
3584 // Drop the payment_event messages, and let them get re-generated in reconnect_nodes!
3586 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
3587 if messages_delivered >= 3 {
3588 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event.commitment_msg);
3589 check_added_monitors!(nodes[1], 1);
3590 let (bs_revoke_and_ack, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
3592 if messages_delivered >= 4 {
3593 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack);
3594 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
3595 check_added_monitors!(nodes[0], 1);
3597 if messages_delivered >= 5 {
3598 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_commitment_signed);
3599 let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
3600 // No commitment_signed so get_event_msg's assert(len == 1) passes
3601 check_added_monitors!(nodes[0], 1);
3603 if messages_delivered >= 6 {
3604 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack);
3605 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
3606 check_added_monitors!(nodes[1], 1);
3613 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3614 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3615 if messages_delivered < 3 {
3616 // Even if the funding_locked messages get exchanged, as long as nothing further was
3617 // received on either side, both sides will need to resend them.
3618 reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 1), (0, 0), (0, 0), (0, 0), (false, false));
3619 } else if messages_delivered == 3 {
3620 // nodes[0] still wants its RAA + commitment_signed
3621 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (-1, 0), (0, 0), (0, 0), (0, 0), (true, false));
3622 } else if messages_delivered == 4 {
3623 // nodes[0] still wants its commitment_signed
3624 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (-1, 0), (0, 0), (0, 0), (0, 0), (false, false));
3625 } else if messages_delivered == 5 {
3626 // nodes[1] still wants its final RAA
3627 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, true));
3628 } else if messages_delivered == 6 {
3629 // Everything was delivered...
3630 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3633 let events_1 = nodes[1].node.get_and_clear_pending_events();
3634 assert_eq!(events_1.len(), 1);
3636 Event::PendingHTLCsForwardable { .. } => { },
3637 _ => panic!("Unexpected event"),
3640 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3641 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3642 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3644 nodes[1].node.process_pending_htlc_forwards();
3646 let events_2 = nodes[1].node.get_and_clear_pending_events();
3647 assert_eq!(events_2.len(), 1);
3649 Event::PaymentReceived { ref payment_hash, ref payment_secret, amt } => {
3650 assert_eq!(payment_hash_1, *payment_hash);
3651 assert_eq!(Some(payment_secret_1), *payment_secret);
3652 assert_eq!(amt, 1000000);
3654 _ => panic!("Unexpected event"),
3657 nodes[1].node.claim_funds(payment_preimage_1, &None, 1_000_000);
3658 check_added_monitors!(nodes[1], 1);
3660 let events_3 = nodes[1].node.get_and_clear_pending_msg_events();
3661 assert_eq!(events_3.len(), 1);
3662 let (update_fulfill_htlc, commitment_signed) = match events_3[0] {
3663 MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => {
3664 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
3665 assert!(updates.update_add_htlcs.is_empty());
3666 assert!(updates.update_fail_htlcs.is_empty());
3667 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
3668 assert!(updates.update_fail_malformed_htlcs.is_empty());
3669 assert!(updates.update_fee.is_none());
3670 (updates.update_fulfill_htlcs[0].clone(), updates.commitment_signed.clone())
3672 _ => panic!("Unexpected event"),
3675 if messages_delivered >= 1 {
3676 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_htlc);
3678 let events_4 = nodes[0].node.get_and_clear_pending_events();
3679 assert_eq!(events_4.len(), 1);
3681 Event::PaymentSent { ref payment_preimage } => {
3682 assert_eq!(payment_preimage_1, *payment_preimage);
3684 _ => panic!("Unexpected event"),
3687 if messages_delivered >= 2 {
3688 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed);
3689 check_added_monitors!(nodes[0], 1);
3690 let (as_revoke_and_ack, as_commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
3692 if messages_delivered >= 3 {
3693 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack);
3694 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
3695 check_added_monitors!(nodes[1], 1);
3697 if messages_delivered >= 4 {
3698 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_signed);
3699 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
3700 // No commitment_signed so get_event_msg's assert(len == 1) passes
3701 check_added_monitors!(nodes[1], 1);
3703 if messages_delivered >= 5 {
3704 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack);
3705 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
3706 check_added_monitors!(nodes[0], 1);
3713 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3714 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3715 if messages_delivered < 2 {
3716 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (1, 0), (0, 0), (0, 0), (false, false));
3717 //TODO: Deduplicate PaymentSent events, then enable this if:
3718 //if messages_delivered < 1 {
3719 let events_4 = nodes[0].node.get_and_clear_pending_events();
3720 assert_eq!(events_4.len(), 1);
3722 Event::PaymentSent { ref payment_preimage } => {
3723 assert_eq!(payment_preimage_1, *payment_preimage);
3725 _ => panic!("Unexpected event"),
3728 } else if messages_delivered == 2 {
3729 // nodes[0] still wants its RAA + commitment_signed
3730 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, -1), (0, 0), (0, 0), (0, 0), (false, true));
3731 } else if messages_delivered == 3 {
3732 // nodes[0] still wants its commitment_signed
3733 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, -1), (0, 0), (0, 0), (0, 0), (false, false));
3734 } else if messages_delivered == 4 {
3735 // nodes[1] still wants its final RAA
3736 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (true, false));
3737 } else if messages_delivered == 5 {
3738 // Everything was delivered...
3739 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3742 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3743 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3744 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3746 // Channel should still work fine...
3747 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3748 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(),
3749 &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), Some(&nodes[0].node.list_usable_channels().iter().collect::<Vec<_>>()),
3750 &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
3751 let payment_preimage_2 = send_along_route(&nodes[0], route, &[&nodes[1]], 1000000).0;
3752 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2, 1_000_000);
3756 fn test_drop_messages_peer_disconnect_a() {
3757 do_test_drop_messages_peer_disconnect(0);
3758 do_test_drop_messages_peer_disconnect(1);
3759 do_test_drop_messages_peer_disconnect(2);
3760 do_test_drop_messages_peer_disconnect(3);
3764 fn test_drop_messages_peer_disconnect_b() {
3765 do_test_drop_messages_peer_disconnect(4);
3766 do_test_drop_messages_peer_disconnect(5);
3767 do_test_drop_messages_peer_disconnect(6);
3771 fn test_funding_peer_disconnect() {
3772 // Test that we can lock in our funding tx while disconnected
3773 let chanmon_cfgs = create_chanmon_cfgs(2);
3774 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3775 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3776 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3777 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001, InitFeatures::known(), InitFeatures::known());
3779 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3780 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3782 confirm_transaction(&nodes[0], &tx);
3783 let events_1 = nodes[0].node.get_and_clear_pending_msg_events();
3784 assert_eq!(events_1.len(), 1);
3786 MessageSendEvent::SendFundingLocked { ref node_id, msg: _ } => {
3787 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
3789 _ => panic!("Unexpected event"),
3792 reconnect_nodes(&nodes[0], &nodes[1], (false, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3794 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3795 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3797 confirm_transaction(&nodes[1], &tx);
3798 let events_2 = nodes[1].node.get_and_clear_pending_msg_events();
3799 assert_eq!(events_2.len(), 2);
3800 let funding_locked = match events_2[0] {
3801 MessageSendEvent::SendFundingLocked { ref node_id, ref msg } => {
3802 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
3805 _ => panic!("Unexpected event"),
3807 let bs_announcement_sigs = match events_2[1] {
3808 MessageSendEvent::SendAnnouncementSignatures { ref node_id, ref msg } => {
3809 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
3812 _ => panic!("Unexpected event"),
3815 reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3817 nodes[0].node.handle_funding_locked(&nodes[1].node.get_our_node_id(), &funding_locked);
3818 nodes[0].node.handle_announcement_signatures(&nodes[1].node.get_our_node_id(), &bs_announcement_sigs);
3819 let events_3 = nodes[0].node.get_and_clear_pending_msg_events();
3820 assert_eq!(events_3.len(), 2);
3821 let as_announcement_sigs = match events_3[0] {
3822 MessageSendEvent::SendAnnouncementSignatures { ref node_id, ref msg } => {
3823 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
3826 _ => panic!("Unexpected event"),
3828 let (as_announcement, as_update) = match events_3[1] {
3829 MessageSendEvent::BroadcastChannelAnnouncement { ref msg, ref update_msg } => {
3830 (msg.clone(), update_msg.clone())
3832 _ => panic!("Unexpected event"),
3835 nodes[1].node.handle_announcement_signatures(&nodes[0].node.get_our_node_id(), &as_announcement_sigs);
3836 let events_4 = nodes[1].node.get_and_clear_pending_msg_events();
3837 assert_eq!(events_4.len(), 1);
3838 let (_, bs_update) = match events_4[0] {
3839 MessageSendEvent::BroadcastChannelAnnouncement { ref msg, ref update_msg } => {
3840 (msg.clone(), update_msg.clone())
3842 _ => panic!("Unexpected event"),
3845 nodes[0].net_graph_msg_handler.handle_channel_announcement(&as_announcement).unwrap();
3846 nodes[0].net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
3847 nodes[0].net_graph_msg_handler.handle_channel_update(&as_update).unwrap();
3849 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3850 let logger = test_utils::TestLogger::new();
3851 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();
3852 let (payment_preimage, _, _) = send_along_route(&nodes[0], route, &[&nodes[1]], 1000000);
3853 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage, 1_000_000);
3857 fn test_drop_messages_peer_disconnect_dual_htlc() {
3858 // Test that we can handle reconnecting when both sides of a channel have pending
3859 // commitment_updates when we disconnect.
3860 let chanmon_cfgs = create_chanmon_cfgs(2);
3861 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3862 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3863 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3864 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3865 let logger = test_utils::TestLogger::new();
3867 let (payment_preimage_1, _, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
3869 // Now try to send a second payment which will fail to send
3870 let (payment_preimage_2, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[1]);
3871 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3872 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();
3873 nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
3874 check_added_monitors!(nodes[0], 1);
3876 let events_1 = nodes[0].node.get_and_clear_pending_msg_events();
3877 assert_eq!(events_1.len(), 1);
3879 MessageSendEvent::UpdateHTLCs { .. } => {},
3880 _ => panic!("Unexpected event"),
3883 assert!(nodes[1].node.claim_funds(payment_preimage_1, &None, 1_000_000));
3884 check_added_monitors!(nodes[1], 1);
3886 let events_2 = nodes[1].node.get_and_clear_pending_msg_events();
3887 assert_eq!(events_2.len(), 1);
3889 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 } } => {
3890 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
3891 assert!(update_add_htlcs.is_empty());
3892 assert_eq!(update_fulfill_htlcs.len(), 1);
3893 assert!(update_fail_htlcs.is_empty());
3894 assert!(update_fail_malformed_htlcs.is_empty());
3895 assert!(update_fee.is_none());
3897 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_htlcs[0]);
3898 let events_3 = nodes[0].node.get_and_clear_pending_events();
3899 assert_eq!(events_3.len(), 1);
3901 Event::PaymentSent { ref payment_preimage } => {
3902 assert_eq!(*payment_preimage, payment_preimage_1);
3904 _ => panic!("Unexpected event"),
3907 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), commitment_signed);
3908 let _ = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
3909 // No commitment_signed so get_event_msg's assert(len == 1) passes
3910 check_added_monitors!(nodes[0], 1);
3912 _ => panic!("Unexpected event"),
3915 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3916 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3918 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
3919 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
3920 assert_eq!(reestablish_1.len(), 1);
3921 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
3922 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
3923 assert_eq!(reestablish_2.len(), 1);
3925 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
3926 let as_resp = handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
3927 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
3928 let bs_resp = handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
3930 assert!(as_resp.0.is_none());
3931 assert!(bs_resp.0.is_none());
3933 assert!(bs_resp.1.is_none());
3934 assert!(bs_resp.2.is_none());
3936 assert!(as_resp.3 == RAACommitmentOrder::CommitmentFirst);
3938 assert_eq!(as_resp.2.as_ref().unwrap().update_add_htlcs.len(), 1);
3939 assert!(as_resp.2.as_ref().unwrap().update_fulfill_htlcs.is_empty());
3940 assert!(as_resp.2.as_ref().unwrap().update_fail_htlcs.is_empty());
3941 assert!(as_resp.2.as_ref().unwrap().update_fail_malformed_htlcs.is_empty());
3942 assert!(as_resp.2.as_ref().unwrap().update_fee.is_none());
3943 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &as_resp.2.as_ref().unwrap().update_add_htlcs[0]);
3944 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_resp.2.as_ref().unwrap().commitment_signed);
3945 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
3946 // No commitment_signed so get_event_msg's assert(len == 1) passes
3947 check_added_monitors!(nodes[1], 1);
3949 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), as_resp.1.as_ref().unwrap());
3950 let bs_second_commitment_signed = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
3951 assert!(bs_second_commitment_signed.update_add_htlcs.is_empty());
3952 assert!(bs_second_commitment_signed.update_fulfill_htlcs.is_empty());
3953 assert!(bs_second_commitment_signed.update_fail_htlcs.is_empty());
3954 assert!(bs_second_commitment_signed.update_fail_malformed_htlcs.is_empty());
3955 assert!(bs_second_commitment_signed.update_fee.is_none());
3956 check_added_monitors!(nodes[1], 1);
3958 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack);
3959 let as_commitment_signed = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
3960 assert!(as_commitment_signed.update_add_htlcs.is_empty());
3961 assert!(as_commitment_signed.update_fulfill_htlcs.is_empty());
3962 assert!(as_commitment_signed.update_fail_htlcs.is_empty());
3963 assert!(as_commitment_signed.update_fail_malformed_htlcs.is_empty());
3964 assert!(as_commitment_signed.update_fee.is_none());
3965 check_added_monitors!(nodes[0], 1);
3967 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_commitment_signed.commitment_signed);
3968 let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
3969 // No commitment_signed so get_event_msg's assert(len == 1) passes
3970 check_added_monitors!(nodes[0], 1);
3972 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_signed.commitment_signed);
3973 let bs_second_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
3974 // No commitment_signed so get_event_msg's assert(len == 1) passes
3975 check_added_monitors!(nodes[1], 1);
3977 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack);
3978 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
3979 check_added_monitors!(nodes[1], 1);
3981 expect_pending_htlcs_forwardable!(nodes[1]);
3983 let events_5 = nodes[1].node.get_and_clear_pending_events();
3984 assert_eq!(events_5.len(), 1);
3986 Event::PaymentReceived { ref payment_hash, ref payment_secret, amt: _ } => {
3987 assert_eq!(payment_hash_2, *payment_hash);
3988 assert_eq!(Some(payment_secret_2), *payment_secret);
3990 _ => panic!("Unexpected event"),
3993 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke_and_ack);
3994 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
3995 check_added_monitors!(nodes[0], 1);
3997 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2, 1_000_000);
4000 fn do_test_htlc_timeout(send_partial_mpp: bool) {
4001 // If the user fails to claim/fail an HTLC within the HTLC CLTV timeout we fail it for them
4002 // to avoid our counterparty failing the channel.
4003 let chanmon_cfgs = create_chanmon_cfgs(2);
4004 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4005 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4006 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4008 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4009 let logger = test_utils::TestLogger::new();
4011 let our_payment_hash = if send_partial_mpp {
4012 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
4013 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();
4014 let (_, our_payment_hash, payment_secret) = get_payment_preimage_hash!(&nodes[1]);
4015 // Use the utility function send_payment_along_path to send the payment with MPP data which
4016 // indicates there are more HTLCs coming.
4017 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.
4018 nodes[0].node.send_payment_along_path(&route.paths[0], &our_payment_hash, &Some(payment_secret), 200000, cur_height).unwrap();
4019 check_added_monitors!(nodes[0], 1);
4020 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
4021 assert_eq!(events.len(), 1);
4022 // Now do the relevant commitment_signed/RAA dances along the path, noting that the final
4023 // hop should *not* yet generate any PaymentReceived event(s).
4024 pass_along_path(&nodes[0], &[&nodes[1]], 100000, our_payment_hash, payment_secret, events.drain(..).next().unwrap(), false);
4027 route_payment(&nodes[0], &[&nodes[1]], 100000).1
4030 let mut block = Block {
4031 header: BlockHeader { version: 0x20000000, prev_blockhash: nodes[0].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
4034 connect_block(&nodes[0], &block);
4035 connect_block(&nodes[1], &block);
4036 for _ in CHAN_CONFIRM_DEPTH + 2 ..TEST_FINAL_CLTV + CHAN_CONFIRM_DEPTH + 2 - CLTV_CLAIM_BUFFER - LATENCY_GRACE_PERIOD_BLOCKS {
4037 block.header.prev_blockhash = block.block_hash();
4038 connect_block(&nodes[0], &block);
4039 connect_block(&nodes[1], &block);
4042 expect_pending_htlcs_forwardable!(nodes[1]);
4044 check_added_monitors!(nodes[1], 1);
4045 let htlc_timeout_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
4046 assert!(htlc_timeout_updates.update_add_htlcs.is_empty());
4047 assert_eq!(htlc_timeout_updates.update_fail_htlcs.len(), 1);
4048 assert!(htlc_timeout_updates.update_fail_malformed_htlcs.is_empty());
4049 assert!(htlc_timeout_updates.update_fee.is_none());
4051 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_timeout_updates.update_fail_htlcs[0]);
4052 commitment_signed_dance!(nodes[0], nodes[1], htlc_timeout_updates.commitment_signed, false);
4053 // 100_000 msat as u64, followed by a height of TEST_FINAL_CLTV + 2 as u32
4054 let mut expected_failure_data = byte_utils::be64_to_array(100_000).to_vec();
4055 expected_failure_data.extend_from_slice(&byte_utils::be32_to_array(TEST_FINAL_CLTV + 2));
4056 expect_payment_failed!(nodes[0], our_payment_hash, true, 0x4000 | 15, &expected_failure_data[..]);
4060 fn test_htlc_timeout() {
4061 do_test_htlc_timeout(true);
4062 do_test_htlc_timeout(false);
4065 fn do_test_holding_cell_htlc_add_timeouts(forwarded_htlc: bool) {
4066 // Tests that HTLCs in the holding cell are timed out after the requisite number of blocks.
4067 let chanmon_cfgs = create_chanmon_cfgs(3);
4068 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
4069 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
4070 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
4071 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4072 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
4074 // Make sure all nodes are at the same starting height
4075 connect_blocks(&nodes[0], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[0].best_block_info().1);
4076 connect_blocks(&nodes[1], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[1].best_block_info().1);
4077 connect_blocks(&nodes[2], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[2].best_block_info().1);
4079 let logger = test_utils::TestLogger::new();
4081 // Route a first payment to get the 1 -> 2 channel in awaiting_raa...
4082 let (_, first_payment_hash, first_payment_secret) = get_payment_preimage_hash!(nodes[2]);
4084 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
4085 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();
4086 nodes[1].node.send_payment(&route, first_payment_hash, &Some(first_payment_secret)).unwrap();
4088 assert_eq!(nodes[1].node.get_and_clear_pending_msg_events().len(), 1);
4089 check_added_monitors!(nodes[1], 1);
4091 // Now attempt to route a second payment, which should be placed in the holding cell
4092 let (_, second_payment_hash, second_payment_secret) = get_payment_preimage_hash!(nodes[2]);
4094 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
4095 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();
4096 nodes[0].node.send_payment(&route, second_payment_hash, &Some(first_payment_secret)).unwrap();
4097 check_added_monitors!(nodes[0], 1);
4098 let payment_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0));
4099 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
4100 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
4101 expect_pending_htlcs_forwardable!(nodes[1]);
4102 check_added_monitors!(nodes[1], 0);
4104 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
4105 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();
4106 nodes[1].node.send_payment(&route, second_payment_hash, &Some(second_payment_secret)).unwrap();
4107 check_added_monitors!(nodes[1], 0);
4110 connect_blocks(&nodes[1], TEST_FINAL_CLTV - CLTV_CLAIM_BUFFER - LATENCY_GRACE_PERIOD_BLOCKS);
4111 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
4112 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
4113 connect_blocks(&nodes[1], 1);
4116 expect_pending_htlcs_forwardable!(nodes[1]);
4117 check_added_monitors!(nodes[1], 1);
4118 let fail_commit = nodes[1].node.get_and_clear_pending_msg_events();
4119 assert_eq!(fail_commit.len(), 1);
4120 match fail_commit[0] {
4121 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fail_htlcs, ref commitment_signed, .. }, .. } => {
4122 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]);
4123 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, true, true);
4125 _ => unreachable!(),
4127 expect_payment_failed!(nodes[0], second_payment_hash, false);
4128 if let &MessageSendEvent::PaymentFailureNetworkUpdate { ref update } = &nodes[0].node.get_and_clear_pending_msg_events()[0] {
4130 &HTLCFailChannelUpdate::ChannelUpdateMessage { .. } => {},
4131 _ => panic!("Unexpected event"),
4134 panic!("Unexpected event");
4137 expect_payment_failed!(nodes[1], second_payment_hash, true);
4142 fn test_holding_cell_htlc_add_timeouts() {
4143 do_test_holding_cell_htlc_add_timeouts(false);
4144 do_test_holding_cell_htlc_add_timeouts(true);
4148 fn test_invalid_channel_announcement() {
4149 //Test BOLT 7 channel_announcement msg requirement for final node, gather data to build customed channel_announcement msgs
4150 let secp_ctx = Secp256k1::new();
4151 let chanmon_cfgs = create_chanmon_cfgs(2);
4152 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4153 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4154 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4156 let chan_announcement = create_chan_between_nodes(&nodes[0], &nodes[1], InitFeatures::known(), InitFeatures::known());
4158 let a_channel_lock = nodes[0].node.channel_state.lock().unwrap();
4159 let b_channel_lock = nodes[1].node.channel_state.lock().unwrap();
4160 let as_chan = a_channel_lock.by_id.get(&chan_announcement.3).unwrap();
4161 let bs_chan = b_channel_lock.by_id.get(&chan_announcement.3).unwrap();
4163 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 } );
4165 let as_bitcoin_key = as_chan.get_signer().inner.holder_channel_pubkeys.funding_pubkey;
4166 let bs_bitcoin_key = bs_chan.get_signer().inner.holder_channel_pubkeys.funding_pubkey;
4168 let as_network_key = nodes[0].node.get_our_node_id();
4169 let bs_network_key = nodes[1].node.get_our_node_id();
4171 let were_node_one = as_bitcoin_key.serialize()[..] < bs_bitcoin_key.serialize()[..];
4173 let mut chan_announcement;
4175 macro_rules! dummy_unsigned_msg {
4177 msgs::UnsignedChannelAnnouncement {
4178 features: ChannelFeatures::known(),
4179 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
4180 short_channel_id: as_chan.get_short_channel_id().unwrap(),
4181 node_id_1: if were_node_one { as_network_key } else { bs_network_key },
4182 node_id_2: if were_node_one { bs_network_key } else { as_network_key },
4183 bitcoin_key_1: if were_node_one { as_bitcoin_key } else { bs_bitcoin_key },
4184 bitcoin_key_2: if were_node_one { bs_bitcoin_key } else { as_bitcoin_key },
4185 excess_data: Vec::new(),
4190 macro_rules! sign_msg {
4191 ($unsigned_msg: expr) => {
4192 let msghash = Message::from_slice(&Sha256dHash::hash(&$unsigned_msg.encode()[..])[..]).unwrap();
4193 let as_bitcoin_sig = secp_ctx.sign(&msghash, &as_chan.get_signer().inner.funding_key);
4194 let bs_bitcoin_sig = secp_ctx.sign(&msghash, &bs_chan.get_signer().inner.funding_key);
4195 let as_node_sig = secp_ctx.sign(&msghash, &nodes[0].keys_manager.get_node_secret());
4196 let bs_node_sig = secp_ctx.sign(&msghash, &nodes[1].keys_manager.get_node_secret());
4197 chan_announcement = msgs::ChannelAnnouncement {
4198 node_signature_1 : if were_node_one { as_node_sig } else { bs_node_sig},
4199 node_signature_2 : if were_node_one { bs_node_sig } else { as_node_sig},
4200 bitcoin_signature_1: if were_node_one { as_bitcoin_sig } else { bs_bitcoin_sig },
4201 bitcoin_signature_2 : if were_node_one { bs_bitcoin_sig } else { as_bitcoin_sig },
4202 contents: $unsigned_msg
4207 let unsigned_msg = dummy_unsigned_msg!();
4208 sign_msg!(unsigned_msg);
4209 assert_eq!(nodes[0].net_graph_msg_handler.handle_channel_announcement(&chan_announcement).unwrap(), true);
4210 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 } );
4212 // Configured with Network::Testnet
4213 let mut unsigned_msg = dummy_unsigned_msg!();
4214 unsigned_msg.chain_hash = genesis_block(Network::Bitcoin).header.block_hash();
4215 sign_msg!(unsigned_msg);
4216 assert!(nodes[0].net_graph_msg_handler.handle_channel_announcement(&chan_announcement).is_err());
4218 let mut unsigned_msg = dummy_unsigned_msg!();
4219 unsigned_msg.chain_hash = BlockHash::hash(&[1,2,3,4,5,6,7,8,9]);
4220 sign_msg!(unsigned_msg);
4221 assert!(nodes[0].net_graph_msg_handler.handle_channel_announcement(&chan_announcement).is_err());
4225 fn test_no_txn_manager_serialize_deserialize() {
4226 let chanmon_cfgs = create_chanmon_cfgs(2);
4227 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4228 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4229 let logger: test_utils::TestLogger;
4230 let fee_estimator: test_utils::TestFeeEstimator;
4231 let persister: test_utils::TestPersister;
4232 let new_chain_monitor: test_utils::TestChainMonitor;
4233 let nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
4234 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4236 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001, InitFeatures::known(), InitFeatures::known());
4238 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4240 let nodes_0_serialized = nodes[0].node.encode();
4241 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
4242 nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter().next().unwrap().1.write(&mut chan_0_monitor_serialized).unwrap();
4244 logger = test_utils::TestLogger::new();
4245 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
4246 persister = test_utils::TestPersister::new();
4247 let keys_manager = &chanmon_cfgs[0].keys_manager;
4248 new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator, &persister, keys_manager);
4249 nodes[0].chain_monitor = &new_chain_monitor;
4250 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
4251 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
4252 &mut chan_0_monitor_read, keys_manager).unwrap();
4253 assert!(chan_0_monitor_read.is_empty());
4255 let mut nodes_0_read = &nodes_0_serialized[..];
4256 let config = UserConfig::default();
4257 let (_, nodes_0_deserialized_tmp) = {
4258 let mut channel_monitors = HashMap::new();
4259 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
4260 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4261 default_config: config,
4263 fee_estimator: &fee_estimator,
4264 chain_monitor: nodes[0].chain_monitor,
4265 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4270 nodes_0_deserialized = nodes_0_deserialized_tmp;
4271 assert!(nodes_0_read.is_empty());
4273 assert!(nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
4274 nodes[0].node = &nodes_0_deserialized;
4275 assert_eq!(nodes[0].node.list_channels().len(), 1);
4276 check_added_monitors!(nodes[0], 1);
4278 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4279 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
4280 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4281 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
4283 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
4284 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
4285 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
4286 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
4288 let (funding_locked, _) = create_chan_between_nodes_with_value_confirm(&nodes[0], &nodes[1], &tx);
4289 let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_locked);
4290 for node in nodes.iter() {
4291 assert!(node.net_graph_msg_handler.handle_channel_announcement(&announcement).unwrap());
4292 node.net_graph_msg_handler.handle_channel_update(&as_update).unwrap();
4293 node.net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
4296 send_payment(&nodes[0], &[&nodes[1]], 1000000, 1_000_000);
4300 fn test_manager_serialize_deserialize_events() {
4301 // This test makes sure the events field in ChannelManager survives de/serialization
4302 let chanmon_cfgs = create_chanmon_cfgs(2);
4303 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4304 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4305 let fee_estimator: test_utils::TestFeeEstimator;
4306 let persister: test_utils::TestPersister;
4307 let logger: test_utils::TestLogger;
4308 let new_chain_monitor: test_utils::TestChainMonitor;
4309 let nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
4310 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4312 // Start creating a channel, but stop right before broadcasting the funding transaction
4313 let channel_value = 100000;
4314 let push_msat = 10001;
4315 let a_flags = InitFeatures::known();
4316 let b_flags = InitFeatures::known();
4317 let node_a = nodes.remove(0);
4318 let node_b = nodes.remove(0);
4319 node_a.node.create_channel(node_b.node.get_our_node_id(), channel_value, push_msat, 42, None).unwrap();
4320 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()));
4321 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()));
4323 let (temporary_channel_id, tx, funding_output) = create_funding_transaction(&node_a, channel_value, 42);
4325 node_a.node.funding_transaction_generated(&temporary_channel_id, tx.clone()).unwrap();
4326 check_added_monitors!(node_a, 0);
4328 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()));
4330 let mut added_monitors = node_b.chain_monitor.added_monitors.lock().unwrap();
4331 assert_eq!(added_monitors.len(), 1);
4332 assert_eq!(added_monitors[0].0, funding_output);
4333 added_monitors.clear();
4336 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()));
4338 let mut added_monitors = node_a.chain_monitor.added_monitors.lock().unwrap();
4339 assert_eq!(added_monitors.len(), 1);
4340 assert_eq!(added_monitors[0].0, funding_output);
4341 added_monitors.clear();
4343 // Normally, this is where node_a would broadcast the funding transaction, but the test de/serializes first instead
4348 // Start the de/seriailization process mid-channel creation to check that the channel manager will hold onto events that are serialized
4349 let nodes_0_serialized = nodes[0].node.encode();
4350 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
4351 nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter().next().unwrap().1.write(&mut chan_0_monitor_serialized).unwrap();
4353 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
4354 logger = test_utils::TestLogger::new();
4355 persister = test_utils::TestPersister::new();
4356 let keys_manager = &chanmon_cfgs[0].keys_manager;
4357 new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator, &persister, keys_manager);
4358 nodes[0].chain_monitor = &new_chain_monitor;
4359 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
4360 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
4361 &mut chan_0_monitor_read, keys_manager).unwrap();
4362 assert!(chan_0_monitor_read.is_empty());
4364 let mut nodes_0_read = &nodes_0_serialized[..];
4365 let config = UserConfig::default();
4366 let (_, nodes_0_deserialized_tmp) = {
4367 let mut channel_monitors = HashMap::new();
4368 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
4369 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4370 default_config: config,
4372 fee_estimator: &fee_estimator,
4373 chain_monitor: nodes[0].chain_monitor,
4374 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4379 nodes_0_deserialized = nodes_0_deserialized_tmp;
4380 assert!(nodes_0_read.is_empty());
4382 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4384 assert!(nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
4385 nodes[0].node = &nodes_0_deserialized;
4387 // After deserializing, make sure the funding_transaction is still held by the channel manager
4388 let events_4 = nodes[0].node.get_and_clear_pending_events();
4389 assert_eq!(events_4.len(), 0);
4390 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
4391 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap()[0].txid(), funding_output.txid);
4393 // Make sure the channel is functioning as though the de/serialization never happened
4394 assert_eq!(nodes[0].node.list_channels().len(), 1);
4395 check_added_monitors!(nodes[0], 1);
4397 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4398 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
4399 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4400 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
4402 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
4403 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
4404 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
4405 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
4407 let (funding_locked, _) = create_chan_between_nodes_with_value_confirm(&nodes[0], &nodes[1], &tx);
4408 let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_locked);
4409 for node in nodes.iter() {
4410 assert!(node.net_graph_msg_handler.handle_channel_announcement(&announcement).unwrap());
4411 node.net_graph_msg_handler.handle_channel_update(&as_update).unwrap();
4412 node.net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
4415 send_payment(&nodes[0], &[&nodes[1]], 1000000, 1_000_000);
4419 fn test_simple_manager_serialize_deserialize() {
4420 let chanmon_cfgs = create_chanmon_cfgs(2);
4421 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4422 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4423 let logger: test_utils::TestLogger;
4424 let fee_estimator: test_utils::TestFeeEstimator;
4425 let persister: test_utils::TestPersister;
4426 let new_chain_monitor: test_utils::TestChainMonitor;
4427 let nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
4428 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4429 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4431 let (our_payment_preimage, _, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
4432 let (_, our_payment_hash, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
4434 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4436 let nodes_0_serialized = nodes[0].node.encode();
4437 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
4438 nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter().next().unwrap().1.write(&mut chan_0_monitor_serialized).unwrap();
4440 logger = test_utils::TestLogger::new();
4441 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
4442 persister = test_utils::TestPersister::new();
4443 let keys_manager = &chanmon_cfgs[0].keys_manager;
4444 new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator, &persister, keys_manager);
4445 nodes[0].chain_monitor = &new_chain_monitor;
4446 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
4447 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
4448 &mut chan_0_monitor_read, keys_manager).unwrap();
4449 assert!(chan_0_monitor_read.is_empty());
4451 let mut nodes_0_read = &nodes_0_serialized[..];
4452 let (_, nodes_0_deserialized_tmp) = {
4453 let mut channel_monitors = HashMap::new();
4454 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
4455 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4456 default_config: UserConfig::default(),
4458 fee_estimator: &fee_estimator,
4459 chain_monitor: nodes[0].chain_monitor,
4460 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4465 nodes_0_deserialized = nodes_0_deserialized_tmp;
4466 assert!(nodes_0_read.is_empty());
4468 assert!(nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
4469 nodes[0].node = &nodes_0_deserialized;
4470 check_added_monitors!(nodes[0], 1);
4472 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
4474 fail_payment(&nodes[0], &[&nodes[1]], our_payment_hash);
4475 claim_payment(&nodes[0], &[&nodes[1]], our_payment_preimage, 1_000_000);
4479 fn test_manager_serialize_deserialize_inconsistent_monitor() {
4480 // Test deserializing a ChannelManager with an out-of-date ChannelMonitor
4481 let chanmon_cfgs = create_chanmon_cfgs(4);
4482 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
4483 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
4484 let logger: test_utils::TestLogger;
4485 let fee_estimator: test_utils::TestFeeEstimator;
4486 let persister: test_utils::TestPersister;
4487 let new_chain_monitor: test_utils::TestChainMonitor;
4488 let nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
4489 let mut nodes = create_network(4, &node_cfgs, &node_chanmgrs);
4490 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4491 create_announced_chan_between_nodes(&nodes, 2, 0, InitFeatures::known(), InitFeatures::known());
4492 let (_, _, channel_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 3, InitFeatures::known(), InitFeatures::known());
4494 let mut node_0_stale_monitors_serialized = Vec::new();
4495 for monitor in nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter() {
4496 let mut writer = test_utils::TestVecWriter(Vec::new());
4497 monitor.1.write(&mut writer).unwrap();
4498 node_0_stale_monitors_serialized.push(writer.0);
4501 let (our_payment_preimage, _, _) = route_payment(&nodes[2], &[&nodes[0], &nodes[1]], 1000000);
4503 // Serialize the ChannelManager here, but the monitor we keep up-to-date
4504 let nodes_0_serialized = nodes[0].node.encode();
4506 route_payment(&nodes[0], &[&nodes[3]], 1000000);
4507 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4508 nodes[2].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4509 nodes[3].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4511 // Now the ChannelMonitor (which is now out-of-sync with ChannelManager for channel w/
4513 let mut node_0_monitors_serialized = Vec::new();
4514 for monitor in nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter() {
4515 let mut writer = test_utils::TestVecWriter(Vec::new());
4516 monitor.1.write(&mut writer).unwrap();
4517 node_0_monitors_serialized.push(writer.0);
4520 logger = test_utils::TestLogger::new();
4521 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
4522 persister = test_utils::TestPersister::new();
4523 let keys_manager = &chanmon_cfgs[0].keys_manager;
4524 new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator, &persister, keys_manager);
4525 nodes[0].chain_monitor = &new_chain_monitor;
4528 let mut node_0_stale_monitors = Vec::new();
4529 for serialized in node_0_stale_monitors_serialized.iter() {
4530 let mut read = &serialized[..];
4531 let (_, monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(&mut read, keys_manager).unwrap();
4532 assert!(read.is_empty());
4533 node_0_stale_monitors.push(monitor);
4536 let mut node_0_monitors = Vec::new();
4537 for serialized in node_0_monitors_serialized.iter() {
4538 let mut read = &serialized[..];
4539 let (_, monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(&mut read, keys_manager).unwrap();
4540 assert!(read.is_empty());
4541 node_0_monitors.push(monitor);
4544 let mut nodes_0_read = &nodes_0_serialized[..];
4545 if let Err(msgs::DecodeError::InvalidValue) =
4546 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4547 default_config: UserConfig::default(),
4549 fee_estimator: &fee_estimator,
4550 chain_monitor: nodes[0].chain_monitor,
4551 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4553 channel_monitors: node_0_stale_monitors.iter_mut().map(|monitor| { (monitor.get_funding_txo().0, monitor) }).collect(),
4555 panic!("If the monitor(s) are stale, this indicates a bug and we should get an Err return");
4558 let mut nodes_0_read = &nodes_0_serialized[..];
4559 let (_, nodes_0_deserialized_tmp) =
4560 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4561 default_config: UserConfig::default(),
4563 fee_estimator: &fee_estimator,
4564 chain_monitor: nodes[0].chain_monitor,
4565 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4567 channel_monitors: node_0_monitors.iter_mut().map(|monitor| { (monitor.get_funding_txo().0, monitor) }).collect(),
4569 nodes_0_deserialized = nodes_0_deserialized_tmp;
4570 assert!(nodes_0_read.is_empty());
4572 { // Channel close should result in a commitment tx and an HTLC tx
4573 let txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
4574 assert_eq!(txn.len(), 2);
4575 assert_eq!(txn[0].input[0].previous_output.txid, funding_tx.txid());
4576 assert_eq!(txn[1].input[0].previous_output.txid, txn[0].txid());
4579 for monitor in node_0_monitors.drain(..) {
4580 assert!(nodes[0].chain_monitor.watch_channel(monitor.get_funding_txo().0, monitor).is_ok());
4581 check_added_monitors!(nodes[0], 1);
4583 nodes[0].node = &nodes_0_deserialized;
4585 // nodes[1] and nodes[2] have no lost state with nodes[0]...
4586 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
4587 reconnect_nodes(&nodes[0], &nodes[2], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
4588 //... and we can even still claim the payment!
4589 claim_payment(&nodes[2], &[&nodes[0], &nodes[1]], our_payment_preimage, 1_000_000);
4591 nodes[3].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4592 let reestablish = get_event_msg!(nodes[3], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
4593 nodes[0].node.peer_connected(&nodes[3].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4594 nodes[0].node.handle_channel_reestablish(&nodes[3].node.get_our_node_id(), &reestablish);
4595 let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
4596 assert_eq!(msg_events.len(), 1);
4597 if let MessageSendEvent::HandleError { ref action, .. } = msg_events[0] {
4599 &ErrorAction::SendErrorMessage { ref msg } => {
4600 assert_eq!(msg.channel_id, channel_id);
4602 _ => panic!("Unexpected event!"),
4607 macro_rules! check_spendable_outputs {
4608 ($node: expr, $der_idx: expr, $keysinterface: expr, $chan_value: expr) => {
4610 let mut events = $node.chain_monitor.chain_monitor.get_and_clear_pending_events();
4611 let mut txn = Vec::new();
4612 let mut all_outputs = Vec::new();
4613 let secp_ctx = Secp256k1::new();
4614 for event in events.drain(..) {
4616 Event::SpendableOutputs { mut outputs } => {
4617 for outp in outputs.drain(..) {
4618 txn.push($keysinterface.backing.spend_spendable_outputs(&[&outp], Vec::new(), Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(), 253, &secp_ctx).unwrap());
4619 all_outputs.push(outp);
4622 _ => panic!("Unexpected event"),
4625 if all_outputs.len() > 1 {
4626 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) {
4636 fn test_claim_sizeable_push_msat() {
4637 // Incidentally test SpendableOutput event generation due to detection of to_local output on commitment tx
4638 let chanmon_cfgs = create_chanmon_cfgs(2);
4639 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4640 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4641 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4643 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 99000000, InitFeatures::known(), InitFeatures::known());
4644 nodes[1].node.force_close_channel(&chan.2).unwrap();
4645 check_closed_broadcast!(nodes[1], true);
4646 check_added_monitors!(nodes[1], 1);
4647 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
4648 assert_eq!(node_txn.len(), 1);
4649 check_spends!(node_txn[0], chan.3);
4650 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
4652 mine_transaction(&nodes[1], &node_txn[0]);
4653 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
4655 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4656 assert_eq!(spend_txn.len(), 1);
4657 check_spends!(spend_txn[0], node_txn[0]);
4661 fn test_claim_on_remote_sizeable_push_msat() {
4662 // Same test as previous, just test on remote commitment tx, as per_commitment_point registration changes following you're funder/fundee and
4663 // to_remote output is encumbered by a P2WPKH
4664 let chanmon_cfgs = create_chanmon_cfgs(2);
4665 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4666 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4667 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4669 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 99000000, InitFeatures::known(), InitFeatures::known());
4670 nodes[0].node.force_close_channel(&chan.2).unwrap();
4671 check_closed_broadcast!(nodes[0], true);
4672 check_added_monitors!(nodes[0], 1);
4674 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
4675 assert_eq!(node_txn.len(), 1);
4676 check_spends!(node_txn[0], chan.3);
4677 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
4679 mine_transaction(&nodes[1], &node_txn[0]);
4680 check_closed_broadcast!(nodes[1], true);
4681 check_added_monitors!(nodes[1], 1);
4682 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
4684 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4685 assert_eq!(spend_txn.len(), 1);
4686 check_spends!(spend_txn[0], node_txn[0]);
4690 fn test_claim_on_remote_revoked_sizeable_push_msat() {
4691 // Same test as previous, just test on remote revoked commitment tx, as per_commitment_point registration changes following you're funder/fundee and
4692 // to_remote output is encumbered by a P2WPKH
4694 let chanmon_cfgs = create_chanmon_cfgs(2);
4695 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4696 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4697 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4699 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 59000000, InitFeatures::known(), InitFeatures::known());
4700 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
4701 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan.2);
4702 assert_eq!(revoked_local_txn[0].input.len(), 1);
4703 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan.3.txid());
4705 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 3_000_000);
4706 mine_transaction(&nodes[1], &revoked_local_txn[0]);
4707 check_closed_broadcast!(nodes[1], true);
4708 check_added_monitors!(nodes[1], 1);
4710 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
4711 mine_transaction(&nodes[1], &node_txn[0]);
4712 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
4714 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4715 assert_eq!(spend_txn.len(), 3);
4716 check_spends!(spend_txn[0], revoked_local_txn[0]); // to_remote output on revoked remote commitment_tx
4717 check_spends!(spend_txn[1], node_txn[0]);
4718 check_spends!(spend_txn[2], revoked_local_txn[0], node_txn[0]); // Both outputs
4722 fn test_static_spendable_outputs_preimage_tx() {
4723 let chanmon_cfgs = create_chanmon_cfgs(2);
4724 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4725 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4726 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4728 // Create some initial channels
4729 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4731 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
4733 let commitment_tx = get_local_commitment_txn!(nodes[0], chan_1.2);
4734 assert_eq!(commitment_tx[0].input.len(), 1);
4735 assert_eq!(commitment_tx[0].input[0].previous_output.txid, chan_1.3.txid());
4737 // Settle A's commitment tx on B's chain
4738 assert!(nodes[1].node.claim_funds(payment_preimage, &None, 3_000_000));
4739 check_added_monitors!(nodes[1], 1);
4740 mine_transaction(&nodes[1], &commitment_tx[0]);
4741 check_added_monitors!(nodes[1], 1);
4742 let events = nodes[1].node.get_and_clear_pending_msg_events();
4744 MessageSendEvent::UpdateHTLCs { .. } => {},
4745 _ => panic!("Unexpected event"),
4748 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
4749 _ => panic!("Unexepected event"),
4752 // Check B's monitor was able to send back output descriptor event for preimage tx on A's commitment tx
4753 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); // ChannelManager : 2 (local commitment tx + HTLC-Success), ChannelMonitor: preimage tx
4754 assert_eq!(node_txn.len(), 3);
4755 check_spends!(node_txn[0], commitment_tx[0]);
4756 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
4757 check_spends!(node_txn[1], chan_1.3);
4758 check_spends!(node_txn[2], node_txn[1]);
4760 mine_transaction(&nodes[1], &node_txn[0]);
4761 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
4763 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4764 assert_eq!(spend_txn.len(), 1);
4765 check_spends!(spend_txn[0], node_txn[0]);
4769 fn test_static_spendable_outputs_timeout_tx() {
4770 let chanmon_cfgs = create_chanmon_cfgs(2);
4771 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4772 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4773 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4775 // Create some initial channels
4776 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4778 // Rebalance the network a bit by relaying one payment through all the channels ...
4779 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
4781 let (_, our_payment_hash, _) = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3_000_000);
4783 let commitment_tx = get_local_commitment_txn!(nodes[0], chan_1.2);
4784 assert_eq!(commitment_tx[0].input.len(), 1);
4785 assert_eq!(commitment_tx[0].input[0].previous_output.txid, chan_1.3.txid());
4787 // Settle A's commitment tx on B' chain
4788 mine_transaction(&nodes[1], &commitment_tx[0]);
4789 check_added_monitors!(nodes[1], 1);
4790 let events = nodes[1].node.get_and_clear_pending_msg_events();
4792 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
4793 _ => panic!("Unexpected event"),
4796 // Check B's monitor was able to send back output descriptor event for timeout tx on A's commitment tx
4797 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
4798 assert_eq!(node_txn.len(), 3); // ChannelManager : 2 (local commitent tx + HTLC-timeout), ChannelMonitor: timeout tx
4799 check_spends!(node_txn[0], commitment_tx[0].clone());
4800 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
4801 check_spends!(node_txn[1], chan_1.3.clone());
4802 check_spends!(node_txn[2], node_txn[1]);
4804 mine_transaction(&nodes[1], &node_txn[0]);
4805 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
4806 expect_payment_failed!(nodes[1], our_payment_hash, true);
4808 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4809 assert_eq!(spend_txn.len(), 3); // SpendableOutput: remote_commitment_tx.to_remote, timeout_tx.output
4810 check_spends!(spend_txn[0], commitment_tx[0]);
4811 check_spends!(spend_txn[1], node_txn[0]);
4812 check_spends!(spend_txn[2], node_txn[0], commitment_tx[0]); // All outputs
4816 fn test_static_spendable_outputs_justice_tx_revoked_commitment_tx() {
4817 let chanmon_cfgs = create_chanmon_cfgs(2);
4818 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4819 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4820 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4822 // Create some initial channels
4823 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4825 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
4826 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
4827 assert_eq!(revoked_local_txn[0].input.len(), 1);
4828 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
4830 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 3_000_000);
4832 mine_transaction(&nodes[1], &revoked_local_txn[0]);
4833 check_closed_broadcast!(nodes[1], true);
4834 check_added_monitors!(nodes[1], 1);
4836 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
4837 assert_eq!(node_txn.len(), 2);
4838 assert_eq!(node_txn[0].input.len(), 2);
4839 check_spends!(node_txn[0], revoked_local_txn[0]);
4841 mine_transaction(&nodes[1], &node_txn[0]);
4842 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
4844 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4845 assert_eq!(spend_txn.len(), 1);
4846 check_spends!(spend_txn[0], node_txn[0]);
4850 fn test_static_spendable_outputs_justice_tx_revoked_htlc_timeout_tx() {
4851 let mut chanmon_cfgs = create_chanmon_cfgs(2);
4852 chanmon_cfgs[0].keys_manager.disable_revocation_policy_check = true;
4853 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4854 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4855 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4857 // Create some initial channels
4858 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4860 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
4861 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
4862 assert_eq!(revoked_local_txn[0].input.len(), 1);
4863 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
4865 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 3_000_000);
4867 // A will generate HTLC-Timeout from revoked commitment tx
4868 mine_transaction(&nodes[0], &revoked_local_txn[0]);
4869 check_closed_broadcast!(nodes[0], true);
4870 check_added_monitors!(nodes[0], 1);
4872 let revoked_htlc_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
4873 assert_eq!(revoked_htlc_txn.len(), 2);
4874 assert_eq!(revoked_htlc_txn[0].input.len(), 1);
4875 assert_eq!(revoked_htlc_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
4876 check_spends!(revoked_htlc_txn[0], revoked_local_txn[0]);
4877 check_spends!(revoked_htlc_txn[1], chan_1.3);
4879 // B will generate justice tx from A's revoked commitment/HTLC tx
4880 let header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4881 connect_block(&nodes[1], &Block { header, txdata: vec![revoked_local_txn[0].clone(), revoked_htlc_txn[0].clone()] });
4882 check_closed_broadcast!(nodes[1], true);
4883 check_added_monitors!(nodes[1], 1);
4885 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
4886 assert_eq!(node_txn.len(), 3); // ChannelMonitor: bogus justice tx, justice tx on revoked outputs, ChannelManager: local commitment tx
4887 // The first transaction generated is bogus - it spends both outputs of revoked_local_txn[0]
4888 // including the one already spent by revoked_htlc_txn[0]. That's OK, we'll spend with valid
4889 // transactions next...
4890 assert_eq!(node_txn[0].input.len(), 3);
4891 check_spends!(node_txn[0], revoked_local_txn[0], revoked_htlc_txn[0]);
4893 assert_eq!(node_txn[1].input.len(), 2);
4894 check_spends!(node_txn[1], revoked_local_txn[0], revoked_htlc_txn[0]);
4895 if node_txn[1].input[1].previous_output.txid == revoked_htlc_txn[0].txid() {
4896 assert_ne!(node_txn[1].input[0].previous_output, revoked_htlc_txn[0].input[0].previous_output);
4898 assert_eq!(node_txn[1].input[0].previous_output.txid, revoked_htlc_txn[0].txid());
4899 assert_ne!(node_txn[1].input[1].previous_output, revoked_htlc_txn[0].input[0].previous_output);
4902 assert_eq!(node_txn[2].input.len(), 1);
4903 check_spends!(node_txn[2], chan_1.3);
4905 mine_transaction(&nodes[1], &node_txn[1]);
4906 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
4908 // Check B's ChannelMonitor was able to generate the right spendable output descriptor
4909 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4910 assert_eq!(spend_txn.len(), 1);
4911 assert_eq!(spend_txn[0].input.len(), 1);
4912 check_spends!(spend_txn[0], node_txn[1]);
4916 fn test_static_spendable_outputs_justice_tx_revoked_htlc_success_tx() {
4917 let mut chanmon_cfgs = create_chanmon_cfgs(2);
4918 chanmon_cfgs[1].keys_manager.disable_revocation_policy_check = true;
4919 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4920 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4921 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4923 // Create some initial channels
4924 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4926 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
4927 let revoked_local_txn = get_local_commitment_txn!(nodes[1], chan_1.2);
4928 assert_eq!(revoked_local_txn[0].input.len(), 1);
4929 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
4931 // The to-be-revoked commitment tx should have one HTLC and one to_remote output
4932 assert_eq!(revoked_local_txn[0].output.len(), 2);
4934 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 3_000_000);
4936 // B will generate HTLC-Success from revoked commitment tx
4937 mine_transaction(&nodes[1], &revoked_local_txn[0]);
4938 check_closed_broadcast!(nodes[1], true);
4939 check_added_monitors!(nodes[1], 1);
4940 let revoked_htlc_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
4942 assert_eq!(revoked_htlc_txn.len(), 2);
4943 assert_eq!(revoked_htlc_txn[0].input.len(), 1);
4944 assert_eq!(revoked_htlc_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
4945 check_spends!(revoked_htlc_txn[0], revoked_local_txn[0]);
4947 // Check that the unspent (of two) outputs on revoked_local_txn[0] is a P2WPKH:
4948 let unspent_local_txn_output = revoked_htlc_txn[0].input[0].previous_output.vout as usize ^ 1;
4949 assert_eq!(revoked_local_txn[0].output[unspent_local_txn_output].script_pubkey.len(), 2 + 20); // P2WPKH
4951 // A will generate justice tx from B's revoked commitment/HTLC tx
4952 let header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[0].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4953 connect_block(&nodes[0], &Block { header, txdata: vec![revoked_local_txn[0].clone(), revoked_htlc_txn[0].clone()] });
4954 check_closed_broadcast!(nodes[0], true);
4955 check_added_monitors!(nodes[0], 1);
4957 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
4958 assert_eq!(node_txn.len(), 3); // ChannelMonitor: justice tx on revoked commitment, justice tx on revoked HTLC-success, ChannelManager: local commitment tx
4960 // The first transaction generated is bogus - it spends both outputs of revoked_local_txn[0]
4961 // including the one already spent by revoked_htlc_txn[0]. That's OK, we'll spend with valid
4962 // transactions next...
4963 assert_eq!(node_txn[0].input.len(), 2);
4964 check_spends!(node_txn[0], revoked_local_txn[0], revoked_htlc_txn[0]);
4965 if node_txn[0].input[1].previous_output.txid == revoked_htlc_txn[0].txid() {
4966 assert_eq!(node_txn[0].input[0].previous_output, revoked_htlc_txn[0].input[0].previous_output);
4968 assert_eq!(node_txn[0].input[0].previous_output.txid, revoked_htlc_txn[0].txid());
4969 assert_eq!(node_txn[0].input[1].previous_output, revoked_htlc_txn[0].input[0].previous_output);
4972 assert_eq!(node_txn[1].input.len(), 1);
4973 check_spends!(node_txn[1], revoked_htlc_txn[0]);
4975 check_spends!(node_txn[2], chan_1.3);
4977 mine_transaction(&nodes[0], &node_txn[1]);
4978 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
4980 // Note that nodes[0]'s tx_broadcaster is still locked, so if we get here the channelmonitor
4981 // didn't try to generate any new transactions.
4983 // Check A's ChannelMonitor was able to generate the right spendable output descriptor
4984 let spend_txn = check_spendable_outputs!(nodes[0], 1, node_cfgs[0].keys_manager, 100000);
4985 assert_eq!(spend_txn.len(), 3);
4986 assert_eq!(spend_txn[0].input.len(), 1);
4987 check_spends!(spend_txn[0], revoked_local_txn[0]); // spending to_remote output from revoked local tx
4988 assert_ne!(spend_txn[0].input[0].previous_output, revoked_htlc_txn[0].input[0].previous_output);
4989 check_spends!(spend_txn[1], node_txn[1]); // spending justice tx output on the htlc success tx
4990 check_spends!(spend_txn[2], revoked_local_txn[0], node_txn[1]); // Both outputs
4994 fn test_onchain_to_onchain_claim() {
4995 // Test that in case of channel closure, we detect the state of output and claim HTLC
4996 // on downstream peer's remote commitment tx.
4997 // First, have C claim an HTLC against its own latest commitment transaction.
4998 // Then, broadcast these to B, which should update the monitor downstream on the A<->B
5000 // Finally, check that B will claim the HTLC output if A's latest commitment transaction
5003 let chanmon_cfgs = create_chanmon_cfgs(3);
5004 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
5005 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
5006 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
5008 // Create some initial channels
5009 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5010 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
5012 // Rebalance the network a bit by relaying one payment through all the channels ...
5013 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000, 8_000_000);
5014 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000, 8_000_000);
5016 let (payment_preimage, _payment_hash, _payment_secret) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
5017 let commitment_tx = get_local_commitment_txn!(nodes[2], chan_2.2);
5018 check_spends!(commitment_tx[0], chan_2.3);
5019 nodes[2].node.claim_funds(payment_preimage, &None, 3_000_000);
5020 check_added_monitors!(nodes[2], 1);
5021 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
5022 assert!(updates.update_add_htlcs.is_empty());
5023 assert!(updates.update_fail_htlcs.is_empty());
5024 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
5025 assert!(updates.update_fail_malformed_htlcs.is_empty());
5027 mine_transaction(&nodes[2], &commitment_tx[0]);
5028 check_closed_broadcast!(nodes[2], true);
5029 check_added_monitors!(nodes[2], 1);
5031 let c_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 2 (commitment tx, HTLC-Success tx), ChannelMonitor : 1 (HTLC-Success tx)
5032 assert_eq!(c_txn.len(), 3);
5033 assert_eq!(c_txn[0], c_txn[2]);
5034 assert_eq!(commitment_tx[0], c_txn[1]);
5035 check_spends!(c_txn[1], chan_2.3);
5036 check_spends!(c_txn[2], c_txn[1]);
5037 assert_eq!(c_txn[1].input[0].witness.clone().last().unwrap().len(), 71);
5038 assert_eq!(c_txn[2].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5039 assert!(c_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
5040 assert_eq!(c_txn[0].lock_time, 0); // Success tx
5042 // 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
5043 let header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
5044 connect_block(&nodes[1], &Block { header, txdata: vec![c_txn[1].clone(), c_txn[2].clone()]});
5046 let mut b_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5047 // ChannelMonitor: claim tx, ChannelManager: local commitment tx + HTLC-timeout tx
5048 assert_eq!(b_txn.len(), 3);
5049 check_spends!(b_txn[1], chan_2.3); // B local commitment tx, issued by ChannelManager
5050 check_spends!(b_txn[2], b_txn[1]); // HTLC-Timeout on B local commitment tx, issued by ChannelManager
5051 assert_eq!(b_txn[2].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
5052 assert!(b_txn[2].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
5053 assert_ne!(b_txn[2].lock_time, 0); // Timeout tx
5054 check_spends!(b_txn[0], c_txn[1]); // timeout tx on C remote commitment tx, issued by ChannelMonitor
5055 assert_eq!(b_txn[0].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5056 assert!(b_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
5057 assert_ne!(b_txn[2].lock_time, 0); // Timeout tx
5060 check_added_monitors!(nodes[1], 1);
5061 let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
5062 assert_eq!(msg_events.len(), 3);
5063 check_added_monitors!(nodes[1], 1);
5064 match msg_events[0] {
5065 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
5066 _ => panic!("Unexpected event"),
5068 match msg_events[1] {
5069 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { .. }, node_id: _ } => {},
5070 _ => panic!("Unexpected event"),
5072 match msg_events[2] {
5073 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, .. } } => {
5074 assert!(update_add_htlcs.is_empty());
5075 assert!(update_fail_htlcs.is_empty());
5076 assert_eq!(update_fulfill_htlcs.len(), 1);
5077 assert!(update_fail_malformed_htlcs.is_empty());
5078 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
5080 _ => panic!("Unexpected event"),
5082 // Broadcast A's commitment tx on B's chain to see if we are able to claim inbound HTLC with our HTLC-Success tx
5083 let commitment_tx = get_local_commitment_txn!(nodes[0], chan_1.2);
5084 mine_transaction(&nodes[1], &commitment_tx[0]);
5085 let b_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5086 // ChannelMonitor: HTLC-Success tx, ChannelManager: local commitment tx + HTLC-Success tx
5087 assert_eq!(b_txn.len(), 3);
5088 check_spends!(b_txn[1], chan_1.3);
5089 check_spends!(b_txn[2], b_txn[1]);
5090 check_spends!(b_txn[0], commitment_tx[0]);
5091 assert_eq!(b_txn[0].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
5092 assert!(b_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
5093 assert_eq!(b_txn[0].lock_time, 0); // Success tx
5095 check_closed_broadcast!(nodes[1], true);
5096 check_added_monitors!(nodes[1], 1);
5100 fn test_duplicate_payment_hash_one_failure_one_success() {
5101 // Topology : A --> B --> C
5102 // We route 2 payments with same hash between B and C, one will be timeout, the other successfully claim
5103 let chanmon_cfgs = create_chanmon_cfgs(3);
5104 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
5105 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
5106 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
5108 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5109 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
5111 let (our_payment_preimage, duplicate_payment_hash, _) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 900000);
5113 let (_, _, payment_secret) = get_payment_preimage_hash!(nodes[1]);
5114 let route = get_route(&nodes[0].node.get_our_node_id(), &nodes[0].net_graph_msg_handler.network_graph.read().unwrap(),
5115 &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 900000, TEST_FINAL_CLTV, nodes[0].logger).unwrap();
5116 send_along_route_with_secret(&nodes[0], route, &[&[&nodes[1], &nodes[2]]], 900000, duplicate_payment_hash, payment_secret);
5118 let commitment_txn = get_local_commitment_txn!(nodes[2], chan_2.2);
5119 assert_eq!(commitment_txn[0].input.len(), 1);
5120 check_spends!(commitment_txn[0], chan_2.3);
5122 mine_transaction(&nodes[1], &commitment_txn[0]);
5123 check_closed_broadcast!(nodes[1], true);
5124 check_added_monitors!(nodes[1], 1);
5126 let htlc_timeout_tx;
5127 { // Extract one of the two HTLC-Timeout transaction
5128 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5129 // ChannelMonitor: timeout tx * 2, ChannelManager: local commitment tx + HTLC-timeout * 2
5130 assert_eq!(node_txn.len(), 5);
5131 check_spends!(node_txn[0], commitment_txn[0]);
5132 assert_eq!(node_txn[0].input.len(), 1);
5133 check_spends!(node_txn[1], commitment_txn[0]);
5134 assert_eq!(node_txn[1].input.len(), 1);
5135 assert_ne!(node_txn[0].input[0], node_txn[1].input[0]);
5136 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5137 assert_eq!(node_txn[1].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5138 check_spends!(node_txn[2], chan_2.3);
5139 check_spends!(node_txn[3], node_txn[2]);
5140 check_spends!(node_txn[4], node_txn[2]);
5141 htlc_timeout_tx = node_txn[1].clone();
5144 nodes[2].node.claim_funds(our_payment_preimage, &None, 900_000);
5145 mine_transaction(&nodes[2], &commitment_txn[0]);
5146 check_added_monitors!(nodes[2], 2);
5147 let events = nodes[2].node.get_and_clear_pending_msg_events();
5149 MessageSendEvent::UpdateHTLCs { .. } => {},
5150 _ => panic!("Unexpected event"),
5153 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
5154 _ => panic!("Unexepected event"),
5156 let htlc_success_txn: Vec<_> = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
5157 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)
5158 check_spends!(htlc_success_txn[2], chan_2.3);
5159 check_spends!(htlc_success_txn[3], htlc_success_txn[2]);
5160 check_spends!(htlc_success_txn[4], htlc_success_txn[2]);
5161 assert_eq!(htlc_success_txn[0], htlc_success_txn[3]);
5162 assert_eq!(htlc_success_txn[0].input.len(), 1);
5163 assert_eq!(htlc_success_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5164 assert_eq!(htlc_success_txn[1], htlc_success_txn[4]);
5165 assert_eq!(htlc_success_txn[1].input.len(), 1);
5166 assert_eq!(htlc_success_txn[1].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5167 assert_ne!(htlc_success_txn[0].input[0], htlc_success_txn[1].input[0]);
5168 check_spends!(htlc_success_txn[0], commitment_txn[0]);
5169 check_spends!(htlc_success_txn[1], commitment_txn[0]);
5171 mine_transaction(&nodes[1], &htlc_timeout_tx);
5172 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
5173 expect_pending_htlcs_forwardable!(nodes[1]);
5174 let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
5175 assert!(htlc_updates.update_add_htlcs.is_empty());
5176 assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
5177 assert_eq!(htlc_updates.update_fail_htlcs[0].htlc_id, 1);
5178 assert!(htlc_updates.update_fulfill_htlcs.is_empty());
5179 assert!(htlc_updates.update_fail_malformed_htlcs.is_empty());
5180 check_added_monitors!(nodes[1], 1);
5182 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]);
5183 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
5185 commitment_signed_dance!(nodes[0], nodes[1], &htlc_updates.commitment_signed, false, true);
5186 let events = nodes[0].node.get_and_clear_pending_msg_events();
5187 assert_eq!(events.len(), 1);
5189 MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelClosed { .. } } => {
5191 _ => { panic!("Unexpected event"); }
5194 expect_payment_failed!(nodes[0], duplicate_payment_hash, false);
5196 // Solve 2nd HTLC by broadcasting on B's chain HTLC-Success Tx from C
5197 mine_transaction(&nodes[1], &htlc_success_txn[0]);
5198 let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
5199 assert!(updates.update_add_htlcs.is_empty());
5200 assert!(updates.update_fail_htlcs.is_empty());
5201 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
5202 assert_eq!(updates.update_fulfill_htlcs[0].htlc_id, 0);
5203 assert!(updates.update_fail_malformed_htlcs.is_empty());
5204 check_added_monitors!(nodes[1], 1);
5206 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
5207 commitment_signed_dance!(nodes[0], nodes[1], &updates.commitment_signed, false);
5209 let events = nodes[0].node.get_and_clear_pending_events();
5211 Event::PaymentSent { ref payment_preimage } => {
5212 assert_eq!(*payment_preimage, our_payment_preimage);
5214 _ => panic!("Unexpected event"),
5219 fn test_dynamic_spendable_outputs_local_htlc_success_tx() {
5220 let chanmon_cfgs = create_chanmon_cfgs(2);
5221 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5222 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5223 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5225 // Create some initial channels
5226 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5228 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000).0;
5229 let local_txn = get_local_commitment_txn!(nodes[1], chan_1.2);
5230 assert_eq!(local_txn.len(), 1);
5231 assert_eq!(local_txn[0].input.len(), 1);
5232 check_spends!(local_txn[0], chan_1.3);
5234 // Give B knowledge of preimage to be able to generate a local HTLC-Success Tx
5235 nodes[1].node.claim_funds(payment_preimage, &None, 9_000_000);
5236 check_added_monitors!(nodes[1], 1);
5237 mine_transaction(&nodes[1], &local_txn[0]);
5238 check_added_monitors!(nodes[1], 1);
5239 let events = nodes[1].node.get_and_clear_pending_msg_events();
5241 MessageSendEvent::UpdateHTLCs { .. } => {},
5242 _ => panic!("Unexpected event"),
5245 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
5246 _ => panic!("Unexepected event"),
5249 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5250 assert_eq!(node_txn.len(), 3);
5251 assert_eq!(node_txn[0], node_txn[2]);
5252 assert_eq!(node_txn[1], local_txn[0]);
5253 assert_eq!(node_txn[0].input.len(), 1);
5254 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5255 check_spends!(node_txn[0], local_txn[0]);
5259 mine_transaction(&nodes[1], &node_tx);
5260 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
5262 // Verify that B is able to spend its own HTLC-Success tx thanks to spendable output event given back by its ChannelMonitor
5263 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
5264 assert_eq!(spend_txn.len(), 1);
5265 check_spends!(spend_txn[0], node_tx);
5268 fn do_test_fail_backwards_unrevoked_remote_announce(deliver_last_raa: bool, announce_latest: bool) {
5269 // Test that we fail backwards the full set of HTLCs we need to when remote broadcasts an
5270 // unrevoked commitment transaction.
5271 // This includes HTLCs which were below the dust threshold as well as HTLCs which were awaiting
5272 // a remote RAA before they could be failed backwards (and combinations thereof).
5273 // We also test duplicate-hash HTLCs by adding two nodes on each side of the target nodes which
5274 // use the same payment hashes.
5275 // Thus, we use a six-node network:
5280 // And test where C fails back to A/B when D announces its latest commitment transaction
5281 let chanmon_cfgs = create_chanmon_cfgs(6);
5282 let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
5283 let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
5284 let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
5285 let logger = test_utils::TestLogger::new();
5287 create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known());
5288 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
5289 let chan = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known());
5290 create_announced_chan_between_nodes(&nodes, 3, 4, InitFeatures::known(), InitFeatures::known());
5291 create_announced_chan_between_nodes(&nodes, 3, 5, InitFeatures::known(), InitFeatures::known());
5293 // Rebalance and check output sanity...
5294 send_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 500000, 500_000);
5295 send_payment(&nodes[1], &[&nodes[2], &nodes[3], &nodes[5]], 500000, 500_000);
5296 assert_eq!(get_local_commitment_txn!(nodes[3], chan.2)[0].output.len(), 2);
5298 let ds_dust_limit = nodes[3].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().holder_dust_limit_satoshis;
5300 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
5302 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
5303 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
5304 let our_node_id = &nodes[1].node.get_our_node_id();
5305 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();
5307 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).unwrap()); // not added < dust limit + HTLC tx fee
5309 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).unwrap()); // not added < dust limit + HTLC tx fee
5311 let (_, payment_hash_3, _) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 1000000);
5313 let (_, payment_hash_4, _) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 1000000);
5314 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();
5316 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).unwrap());
5318 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).unwrap());
5321 let (_, payment_hash_5, _) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 1000000);
5323 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();
5324 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).unwrap()); // not added < dust limit + HTLC tx fee
5327 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
5329 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();
5330 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).unwrap());
5332 // Double-check that six of the new HTLC were added
5333 // We now have six HTLCs pending over the dust limit and six HTLCs under the dust limit (ie,
5334 // with to_local and to_remote outputs, 8 outputs and 6 HTLCs not included).
5335 assert_eq!(get_local_commitment_txn!(nodes[3], chan.2).len(), 1);
5336 assert_eq!(get_local_commitment_txn!(nodes[3], chan.2)[0].output.len(), 8);
5338 // Now fail back three of the over-dust-limit and three of the under-dust-limit payments in one go.
5339 // Fail 0th below-dust, 4th above-dust, 8th above-dust, 10th below-dust HTLCs
5340 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_1, &None));
5341 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_3, &None));
5342 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_5, &None));
5343 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_6, &None));
5344 check_added_monitors!(nodes[4], 0);
5345 expect_pending_htlcs_forwardable!(nodes[4]);
5346 check_added_monitors!(nodes[4], 1);
5348 let four_removes = get_htlc_update_msgs!(nodes[4], nodes[3].node.get_our_node_id());
5349 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[0]);
5350 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[1]);
5351 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[2]);
5352 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[3]);
5353 commitment_signed_dance!(nodes[3], nodes[4], four_removes.commitment_signed, false);
5355 // Fail 3rd below-dust and 7th above-dust HTLCs
5356 assert!(nodes[5].node.fail_htlc_backwards(&payment_hash_2, &None));
5357 assert!(nodes[5].node.fail_htlc_backwards(&payment_hash_4, &None));
5358 check_added_monitors!(nodes[5], 0);
5359 expect_pending_htlcs_forwardable!(nodes[5]);
5360 check_added_monitors!(nodes[5], 1);
5362 let two_removes = get_htlc_update_msgs!(nodes[5], nodes[3].node.get_our_node_id());
5363 nodes[3].node.handle_update_fail_htlc(&nodes[5].node.get_our_node_id(), &two_removes.update_fail_htlcs[0]);
5364 nodes[3].node.handle_update_fail_htlc(&nodes[5].node.get_our_node_id(), &two_removes.update_fail_htlcs[1]);
5365 commitment_signed_dance!(nodes[3], nodes[5], two_removes.commitment_signed, false);
5367 let ds_prev_commitment_tx = get_local_commitment_txn!(nodes[3], chan.2);
5369 expect_pending_htlcs_forwardable!(nodes[3]);
5370 check_added_monitors!(nodes[3], 1);
5371 let six_removes = get_htlc_update_msgs!(nodes[3], nodes[2].node.get_our_node_id());
5372 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[0]);
5373 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[1]);
5374 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[2]);
5375 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[3]);
5376 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[4]);
5377 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[5]);
5378 if deliver_last_raa {
5379 commitment_signed_dance!(nodes[2], nodes[3], six_removes.commitment_signed, false);
5381 let _cs_last_raa = commitment_signed_dance!(nodes[2], nodes[3], six_removes.commitment_signed, false, true, false, true);
5384 // D's latest commitment transaction now contains 1st + 2nd + 9th HTLCs (implicitly, they're
5385 // below the dust limit) and the 5th + 6th + 11th HTLCs. It has failed back the 0th, 3rd, 4th,
5386 // 7th, 8th, and 10th, but as we haven't yet delivered the final RAA to C, the fails haven't
5387 // propagated back to A/B yet (and D has two unrevoked commitment transactions).
5389 // We now broadcast the latest commitment transaction, which *should* result in failures for
5390 // the 0th, 1st, 2nd, 3rd, 4th, 7th, 8th, 9th, and 10th HTLCs, ie all the below-dust HTLCs and
5391 // the non-broadcast above-dust HTLCs.
5393 // Alternatively, we may broadcast the previous commitment transaction, which should only
5394 // result in failures for the below-dust HTLCs, ie the 0th, 1st, 2nd, 3rd, 9th, and 10th HTLCs.
5395 let ds_last_commitment_tx = get_local_commitment_txn!(nodes[3], chan.2);
5397 if announce_latest {
5398 mine_transaction(&nodes[2], &ds_last_commitment_tx[0]);
5400 mine_transaction(&nodes[2], &ds_prev_commitment_tx[0]);
5402 connect_blocks(&nodes[2], ANTI_REORG_DELAY - 1);
5403 check_closed_broadcast!(nodes[2], true);
5404 expect_pending_htlcs_forwardable!(nodes[2]);
5405 check_added_monitors!(nodes[2], 3);
5407 let cs_msgs = nodes[2].node.get_and_clear_pending_msg_events();
5408 assert_eq!(cs_msgs.len(), 2);
5409 let mut a_done = false;
5410 for msg in cs_msgs {
5412 MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => {
5413 // Both under-dust HTLCs and the one above-dust HTLC that we had already failed
5414 // should be failed-backwards here.
5415 let target = if *node_id == nodes[0].node.get_our_node_id() {
5416 // If announce_latest, expect 0th, 1st, 4th, 8th, 10th HTLCs, else only 0th, 1st, 10th below-dust HTLCs
5417 for htlc in &updates.update_fail_htlcs {
5418 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 });
5420 assert_eq!(updates.update_fail_htlcs.len(), if announce_latest { 5 } else { 3 });
5425 // If announce_latest, expect 2nd, 3rd, 7th, 9th HTLCs, else only 2nd, 3rd, 9th below-dust HTLCs
5426 for htlc in &updates.update_fail_htlcs {
5427 assert!(htlc.htlc_id == 1 || htlc.htlc_id == 2 || htlc.htlc_id == 5 || if announce_latest { htlc.htlc_id == 4 } else { false });
5429 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
5430 assert_eq!(updates.update_fail_htlcs.len(), if announce_latest { 4 } else { 3 });
5433 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
5434 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[1]);
5435 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[2]);
5436 if announce_latest {
5437 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[3]);
5438 if *node_id == nodes[0].node.get_our_node_id() {
5439 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[4]);
5442 commitment_signed_dance!(target, nodes[2], updates.commitment_signed, false, true);
5444 _ => panic!("Unexpected event"),
5448 let as_events = nodes[0].node.get_and_clear_pending_events();
5449 assert_eq!(as_events.len(), if announce_latest { 5 } else { 3 });
5450 let mut as_failds = HashSet::new();
5451 for event in as_events.iter() {
5452 if let &Event::PaymentFailed { ref payment_hash, ref rejected_by_dest, .. } = event {
5453 assert!(as_failds.insert(*payment_hash));
5454 if *payment_hash != payment_hash_2 {
5455 assert_eq!(*rejected_by_dest, deliver_last_raa);
5457 assert!(!rejected_by_dest);
5459 } else { panic!("Unexpected event"); }
5461 assert!(as_failds.contains(&payment_hash_1));
5462 assert!(as_failds.contains(&payment_hash_2));
5463 if announce_latest {
5464 assert!(as_failds.contains(&payment_hash_3));
5465 assert!(as_failds.contains(&payment_hash_5));
5467 assert!(as_failds.contains(&payment_hash_6));
5469 let bs_events = nodes[1].node.get_and_clear_pending_events();
5470 assert_eq!(bs_events.len(), if announce_latest { 4 } else { 3 });
5471 let mut bs_failds = HashSet::new();
5472 for event in bs_events.iter() {
5473 if let &Event::PaymentFailed { ref payment_hash, ref rejected_by_dest, .. } = event {
5474 assert!(bs_failds.insert(*payment_hash));
5475 if *payment_hash != payment_hash_1 && *payment_hash != payment_hash_5 {
5476 assert_eq!(*rejected_by_dest, deliver_last_raa);
5478 assert!(!rejected_by_dest);
5480 } else { panic!("Unexpected event"); }
5482 assert!(bs_failds.contains(&payment_hash_1));
5483 assert!(bs_failds.contains(&payment_hash_2));
5484 if announce_latest {
5485 assert!(bs_failds.contains(&payment_hash_4));
5487 assert!(bs_failds.contains(&payment_hash_5));
5489 // For each HTLC which was not failed-back by normal process (ie deliver_last_raa), we should
5490 // get a PaymentFailureNetworkUpdate. A should have gotten 4 HTLCs which were failed-back due
5491 // to unknown-preimage-etc, B should have gotten 2. Thus, in the
5492 // announce_latest && deliver_last_raa case, we should have 5-4=1 and 4-2=2
5493 // PaymentFailureNetworkUpdates.
5494 let as_msg_events = nodes[0].node.get_and_clear_pending_msg_events();
5495 assert_eq!(as_msg_events.len(), if deliver_last_raa { 1 } else if !announce_latest { 3 } else { 5 });
5496 let bs_msg_events = nodes[1].node.get_and_clear_pending_msg_events();
5497 assert_eq!(bs_msg_events.len(), if deliver_last_raa { 2 } else if !announce_latest { 3 } else { 4 });
5498 for event in as_msg_events.iter().chain(bs_msg_events.iter()) {
5500 &MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
5501 _ => panic!("Unexpected event"),
5507 fn test_fail_backwards_latest_remote_announce_a() {
5508 do_test_fail_backwards_unrevoked_remote_announce(false, true);
5512 fn test_fail_backwards_latest_remote_announce_b() {
5513 do_test_fail_backwards_unrevoked_remote_announce(true, true);
5517 fn test_fail_backwards_previous_remote_announce() {
5518 do_test_fail_backwards_unrevoked_remote_announce(false, false);
5519 // Note that true, true doesn't make sense as it implies we announce a revoked state, which is
5520 // tested for in test_commitment_revoked_fail_backward_exhaustive()
5524 fn test_dynamic_spendable_outputs_local_htlc_timeout_tx() {
5525 let chanmon_cfgs = create_chanmon_cfgs(2);
5526 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5527 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5528 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5530 // Create some initial channels
5531 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5533 let (_, our_payment_hash, _) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000);
5534 let local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
5535 assert_eq!(local_txn[0].input.len(), 1);
5536 check_spends!(local_txn[0], chan_1.3);
5538 // Timeout HTLC on A's chain and so it can generate a HTLC-Timeout tx
5539 mine_transaction(&nodes[0], &local_txn[0]);
5540 check_closed_broadcast!(nodes[0], true);
5541 check_added_monitors!(nodes[0], 1);
5543 let htlc_timeout = {
5544 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
5545 assert_eq!(node_txn[0].input.len(), 1);
5546 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
5547 check_spends!(node_txn[0], local_txn[0]);
5551 mine_transaction(&nodes[0], &htlc_timeout);
5552 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
5553 expect_payment_failed!(nodes[0], our_payment_hash, true);
5555 // Verify that A is able to spend its own HTLC-Timeout tx thanks to spendable output event given back by its ChannelMonitor
5556 let spend_txn = check_spendable_outputs!(nodes[0], 1, node_cfgs[0].keys_manager, 100000);
5557 assert_eq!(spend_txn.len(), 3);
5558 check_spends!(spend_txn[0], local_txn[0]);
5559 check_spends!(spend_txn[1], htlc_timeout);
5560 check_spends!(spend_txn[2], local_txn[0], htlc_timeout);
5564 fn test_key_derivation_params() {
5565 // This test is a copy of test_dynamic_spendable_outputs_local_htlc_timeout_tx, with
5566 // a key manager rotation to test that key_derivation_params returned in DynamicOutputP2WSH
5567 // let us re-derive the channel key set to then derive a delayed_payment_key.
5569 let chanmon_cfgs = create_chanmon_cfgs(3);
5571 // We manually create the node configuration to backup the seed.
5572 let seed = [42; 32];
5573 let keys_manager = test_utils::TestKeysInterface::new(&seed, Network::Testnet);
5574 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);
5575 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 };
5576 let mut node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
5577 node_cfgs.remove(0);
5578 node_cfgs.insert(0, node);
5580 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
5581 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
5583 // Create some initial channels
5584 // Create a dummy channel to advance index by one and thus test re-derivation correctness
5586 let chan_0 = create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known());
5587 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5588 assert_ne!(chan_0.3.output[0].script_pubkey, chan_1.3.output[0].script_pubkey);
5590 let (_, our_payment_hash, _) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000);
5591 let local_txn_0 = get_local_commitment_txn!(nodes[0], chan_0.2);
5592 let local_txn_1 = get_local_commitment_txn!(nodes[0], chan_1.2);
5593 assert_eq!(local_txn_1[0].input.len(), 1);
5594 check_spends!(local_txn_1[0], chan_1.3);
5596 // We check funding pubkey are unique
5597 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]));
5598 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]));
5599 if from_0_funding_key_0 == from_1_funding_key_0
5600 || from_0_funding_key_0 == from_1_funding_key_1
5601 || from_0_funding_key_1 == from_1_funding_key_0
5602 || from_0_funding_key_1 == from_1_funding_key_1 {
5603 panic!("Funding pubkeys aren't unique");
5606 // Timeout HTLC on A's chain and so it can generate a HTLC-Timeout tx
5607 mine_transaction(&nodes[0], &local_txn_1[0]);
5608 check_closed_broadcast!(nodes[0], true);
5609 check_added_monitors!(nodes[0], 1);
5611 let htlc_timeout = {
5612 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
5613 assert_eq!(node_txn[0].input.len(), 1);
5614 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
5615 check_spends!(node_txn[0], local_txn_1[0]);
5619 mine_transaction(&nodes[0], &htlc_timeout);
5620 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
5621 expect_payment_failed!(nodes[0], our_payment_hash, true);
5623 // Verify that A is able to spend its own HTLC-Timeout tx thanks to spendable output event given back by its ChannelMonitor
5624 let new_keys_manager = test_utils::TestKeysInterface::new(&seed, Network::Testnet);
5625 let spend_txn = check_spendable_outputs!(nodes[0], 1, new_keys_manager, 100000);
5626 assert_eq!(spend_txn.len(), 3);
5627 check_spends!(spend_txn[0], local_txn_1[0]);
5628 check_spends!(spend_txn[1], htlc_timeout);
5629 check_spends!(spend_txn[2], local_txn_1[0], htlc_timeout);
5633 fn test_static_output_closing_tx() {
5634 let chanmon_cfgs = create_chanmon_cfgs(2);
5635 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5636 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5637 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5639 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5641 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
5642 let closing_tx = close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true).2;
5644 mine_transaction(&nodes[0], &closing_tx);
5645 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
5647 let spend_txn = check_spendable_outputs!(nodes[0], 2, node_cfgs[0].keys_manager, 100000);
5648 assert_eq!(spend_txn.len(), 1);
5649 check_spends!(spend_txn[0], closing_tx);
5651 mine_transaction(&nodes[1], &closing_tx);
5652 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
5654 let spend_txn = check_spendable_outputs!(nodes[1], 2, node_cfgs[1].keys_manager, 100000);
5655 assert_eq!(spend_txn.len(), 1);
5656 check_spends!(spend_txn[0], closing_tx);
5659 fn do_htlc_claim_local_commitment_only(use_dust: bool) {
5660 let chanmon_cfgs = create_chanmon_cfgs(2);
5661 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5662 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5663 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5664 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5666 let (our_payment_preimage, _, _) = route_payment(&nodes[0], &[&nodes[1]], if use_dust { 50000 } else { 3000000 });
5668 // Claim the payment, but don't deliver A's commitment_signed, resulting in the HTLC only being
5669 // present in B's local commitment transaction, but none of A's commitment transactions.
5670 assert!(nodes[1].node.claim_funds(our_payment_preimage, &None, if use_dust { 50_000 } else { 3_000_000 }));
5671 check_added_monitors!(nodes[1], 1);
5673 let bs_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
5674 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.update_fulfill_htlcs[0]);
5675 let events = nodes[0].node.get_and_clear_pending_events();
5676 assert_eq!(events.len(), 1);
5678 Event::PaymentSent { payment_preimage } => {
5679 assert_eq!(payment_preimage, our_payment_preimage);
5681 _ => panic!("Unexpected event"),
5684 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_updates.commitment_signed);
5685 check_added_monitors!(nodes[0], 1);
5686 let as_updates = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
5687 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_updates.0);
5688 check_added_monitors!(nodes[1], 1);
5690 let starting_block = nodes[1].best_block_info();
5691 let mut block = Block {
5692 header: BlockHeader { version: 0x20000000, prev_blockhash: starting_block.0, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
5695 for _ in starting_block.1 + 1..TEST_FINAL_CLTV - CLTV_CLAIM_BUFFER + starting_block.1 + 2 {
5696 connect_block(&nodes[1], &block);
5697 block.header.prev_blockhash = block.block_hash();
5699 test_txn_broadcast(&nodes[1], &chan, None, if use_dust { HTLCType::NONE } else { HTLCType::SUCCESS });
5700 check_closed_broadcast!(nodes[1], true);
5701 check_added_monitors!(nodes[1], 1);
5704 fn do_htlc_claim_current_remote_commitment_only(use_dust: bool) {
5705 let chanmon_cfgs = create_chanmon_cfgs(2);
5706 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5707 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5708 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5709 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5710 let logger = test_utils::TestLogger::new();
5712 let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[1]);
5713 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
5714 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();
5715 nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
5716 check_added_monitors!(nodes[0], 1);
5718 let _as_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
5720 // As far as A is concerned, the HTLC is now present only in the latest remote commitment
5721 // transaction, however it is not in A's latest local commitment, so we can just broadcast that
5722 // to "time out" the HTLC.
5724 let starting_block = nodes[1].best_block_info();
5725 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: starting_block.0, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5727 for _ in starting_block.1 + 1..TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + starting_block.1 + 2 {
5728 connect_block(&nodes[0], &Block { header, txdata: Vec::new()});
5729 header.prev_blockhash = header.block_hash();
5731 test_txn_broadcast(&nodes[0], &chan, None, HTLCType::NONE);
5732 check_closed_broadcast!(nodes[0], true);
5733 check_added_monitors!(nodes[0], 1);
5736 fn do_htlc_claim_previous_remote_commitment_only(use_dust: bool, check_revoke_no_close: bool) {
5737 let chanmon_cfgs = create_chanmon_cfgs(3);
5738 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
5739 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
5740 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
5741 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5743 // Fail the payment, but don't deliver A's final RAA, resulting in the HTLC only being present
5744 // in B's previous (unrevoked) commitment transaction, but none of A's commitment transactions.
5745 // Also optionally test that we *don't* fail the channel in case the commitment transaction was
5746 // actually revoked.
5747 let htlc_value = if use_dust { 50000 } else { 3000000 };
5748 let (_, our_payment_hash, _) = route_payment(&nodes[0], &[&nodes[1]], htlc_value);
5749 assert!(nodes[1].node.fail_htlc_backwards(&our_payment_hash, &None));
5750 expect_pending_htlcs_forwardable!(nodes[1]);
5751 check_added_monitors!(nodes[1], 1);
5753 let bs_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
5754 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.update_fail_htlcs[0]);
5755 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_updates.commitment_signed);
5756 check_added_monitors!(nodes[0], 1);
5757 let as_updates = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
5758 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_updates.0);
5759 check_added_monitors!(nodes[1], 1);
5760 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_updates.1);
5761 check_added_monitors!(nodes[1], 1);
5762 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
5764 if check_revoke_no_close {
5765 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack);
5766 check_added_monitors!(nodes[0], 1);
5769 let starting_block = nodes[1].best_block_info();
5770 let mut block = Block {
5771 header: BlockHeader { version: 0x20000000, prev_blockhash: starting_block.0, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
5774 for _ in starting_block.1 + 1..TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + CHAN_CONFIRM_DEPTH + 2 {
5775 connect_block(&nodes[0], &block);
5776 block.header.prev_blockhash = block.block_hash();
5778 if !check_revoke_no_close {
5779 test_txn_broadcast(&nodes[0], &chan, None, HTLCType::NONE);
5780 check_closed_broadcast!(nodes[0], true);
5781 check_added_monitors!(nodes[0], 1);
5783 expect_payment_failed!(nodes[0], our_payment_hash, true);
5787 // Test that we close channels on-chain when broadcastable HTLCs reach their timeout window.
5788 // There are only a few cases to test here:
5789 // * its not really normative behavior, but we test that below-dust HTLCs "included" in
5790 // broadcastable commitment transactions result in channel closure,
5791 // * its included in an unrevoked-but-previous remote commitment transaction,
5792 // * its included in the latest remote or local commitment transactions.
5793 // We test each of the three possible commitment transactions individually and use both dust and
5795 // Note that we don't bother testing both outbound and inbound HTLC failures for each case, and we
5796 // assume they are handled the same across all six cases, as both outbound and inbound failures are
5797 // tested for at least one of the cases in other tests.
5799 fn htlc_claim_single_commitment_only_a() {
5800 do_htlc_claim_local_commitment_only(true);
5801 do_htlc_claim_local_commitment_only(false);
5803 do_htlc_claim_current_remote_commitment_only(true);
5804 do_htlc_claim_current_remote_commitment_only(false);
5808 fn htlc_claim_single_commitment_only_b() {
5809 do_htlc_claim_previous_remote_commitment_only(true, false);
5810 do_htlc_claim_previous_remote_commitment_only(false, false);
5811 do_htlc_claim_previous_remote_commitment_only(true, true);
5812 do_htlc_claim_previous_remote_commitment_only(false, true);
5817 fn bolt2_open_channel_sending_node_checks_part1() { //This test needs to be on its own as we are catching a panic
5818 let chanmon_cfgs = create_chanmon_cfgs(2);
5819 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5820 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5821 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5822 //Force duplicate channel ids
5823 for node in nodes.iter() {
5824 *node.keys_manager.override_channel_id_priv.lock().unwrap() = Some([0; 32]);
5827 // BOLT #2 spec: Sending node must ensure temporary_channel_id is unique from any other channel ID with the same peer.
5828 let channel_value_satoshis=10000;
5829 let push_msat=10001;
5830 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).unwrap();
5831 let node0_to_1_send_open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
5832 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &node0_to_1_send_open_channel);
5834 //Create a second channel with a channel_id collision
5835 assert!(nodes[0].node.create_channel(nodes[0].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).is_err());
5839 fn bolt2_open_channel_sending_node_checks_part2() {
5840 let chanmon_cfgs = create_chanmon_cfgs(2);
5841 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5842 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5843 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5845 // BOLT #2 spec: Sending node must set funding_satoshis to less than 2^24 satoshis
5846 let channel_value_satoshis=2^24;
5847 let push_msat=10001;
5848 assert!(nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).is_err());
5850 // BOLT #2 spec: Sending node must set push_msat to equal or less than 1000 * funding_satoshis
5851 let channel_value_satoshis=10000;
5852 // Test when push_msat is equal to 1000 * funding_satoshis.
5853 let push_msat=1000*channel_value_satoshis+1;
5854 assert!(nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).is_err());
5856 // BOLT #2 spec: Sending node must set set channel_reserve_satoshis greater than or equal to dust_limit_satoshis
5857 let channel_value_satoshis=10000;
5858 let push_msat=10001;
5859 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
5860 let node0_to_1_send_open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
5861 assert!(node0_to_1_send_open_channel.channel_reserve_satoshis>=node0_to_1_send_open_channel.dust_limit_satoshis);
5863 // BOLT #2 spec: Sending node must set undefined bits in channel_flags to 0
5864 // 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
5865 assert!(node0_to_1_send_open_channel.channel_flags<=1);
5867 // 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.
5868 assert!(BREAKDOWN_TIMEOUT>0);
5869 assert!(node0_to_1_send_open_channel.to_self_delay==BREAKDOWN_TIMEOUT);
5871 // BOLT #2 spec: Sending node must ensure the chain_hash value identifies the chain it wishes to open the channel within.
5872 let chain_hash=genesis_block(Network::Testnet).header.block_hash();
5873 assert_eq!(node0_to_1_send_open_channel.chain_hash,chain_hash);
5875 // 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.
5876 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.funding_pubkey.serialize()).is_ok());
5877 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.revocation_basepoint.serialize()).is_ok());
5878 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.htlc_basepoint.serialize()).is_ok());
5879 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.payment_point.serialize()).is_ok());
5880 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.delayed_payment_basepoint.serialize()).is_ok());
5883 // Test that if we fail to send an HTLC that is being freed from the holding cell, and the HTLC
5884 // originated from our node, its failure is surfaced to the user. We trigger this failure to
5885 // free the HTLC by increasing our fee while the HTLC is in the holding cell such that the HTLC
5886 // is no longer affordable once it's freed.
5888 fn test_fail_holding_cell_htlc_upon_free() {
5889 let chanmon_cfgs = create_chanmon_cfgs(2);
5890 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5891 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5892 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5893 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
5894 let logger = test_utils::TestLogger::new();
5896 // First nodes[0] generates an update_fee, setting the channel's
5897 // pending_update_fee.
5898 nodes[0].node.update_fee(chan.2, get_feerate!(nodes[0], chan.2) + 20).unwrap();
5899 check_added_monitors!(nodes[0], 1);
5901 let events = nodes[0].node.get_and_clear_pending_msg_events();
5902 assert_eq!(events.len(), 1);
5903 let (update_msg, commitment_signed) = match events[0] {
5904 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
5905 (update_fee.as_ref(), commitment_signed)
5907 _ => panic!("Unexpected event"),
5910 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
5912 let mut chan_stat = get_channel_value_stat!(nodes[0], chan.2);
5913 let channel_reserve = chan_stat.channel_reserve_msat;
5914 let feerate = get_feerate!(nodes[0], chan.2);
5916 // 2* and +1 HTLCs on the commit tx fee calculation for the fee spike reserve.
5917 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
5918 let max_can_send = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 1 + 1);
5919 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
5920 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();
5922 // Send a payment which passes reserve checks but gets stuck in the holding cell.
5923 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
5924 chan_stat = get_channel_value_stat!(nodes[0], chan.2);
5925 assert_eq!(chan_stat.holding_cell_outbound_amount_msat, max_can_send);
5927 // Flush the pending fee update.
5928 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
5929 let (as_revoke_and_ack, _) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
5930 check_added_monitors!(nodes[1], 1);
5931 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_revoke_and_ack);
5932 check_added_monitors!(nodes[0], 1);
5934 // Upon receipt of the RAA, there will be an attempt to resend the holding cell
5935 // HTLC, but now that the fee has been raised the payment will now fail, causing
5936 // us to surface its failure to the user.
5937 chan_stat = get_channel_value_stat!(nodes[0], chan.2);
5938 assert_eq!(chan_stat.holding_cell_outbound_amount_msat, 0);
5939 nodes[0].logger.assert_log("lightning::ln::channel".to_string(), "Freeing holding cell with 1 HTLC updates".to_string(), 1);
5940 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);
5941 nodes[0].logger.assert_log("lightning::ln::channel".to_string(), failure_log.to_string(), 1);
5943 // Check that the payment failed to be sent out.
5944 let events = nodes[0].node.get_and_clear_pending_events();
5945 assert_eq!(events.len(), 1);
5947 &Event::PaymentFailed { ref payment_hash, ref rejected_by_dest, ref error_code, ref error_data } => {
5948 assert_eq!(our_payment_hash.clone(), *payment_hash);
5949 assert_eq!(*rejected_by_dest, false);
5950 assert_eq!(*error_code, None);
5951 assert_eq!(*error_data, None);
5953 _ => panic!("Unexpected event"),
5957 // Test that if multiple HTLCs are released from the holding cell and one is
5958 // valid but the other is no longer valid upon release, the valid HTLC can be
5959 // successfully completed while the other one fails as expected.
5961 fn test_free_and_fail_holding_cell_htlcs() {
5962 let chanmon_cfgs = create_chanmon_cfgs(2);
5963 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5964 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5965 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5966 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
5967 let logger = test_utils::TestLogger::new();
5969 // First nodes[0] generates an update_fee, setting the channel's
5970 // pending_update_fee.
5971 nodes[0].node.update_fee(chan.2, get_feerate!(nodes[0], chan.2) + 200).unwrap();
5972 check_added_monitors!(nodes[0], 1);
5974 let events = nodes[0].node.get_and_clear_pending_msg_events();
5975 assert_eq!(events.len(), 1);
5976 let (update_msg, commitment_signed) = match events[0] {
5977 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
5978 (update_fee.as_ref(), commitment_signed)
5980 _ => panic!("Unexpected event"),
5983 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
5985 let mut chan_stat = get_channel_value_stat!(nodes[0], chan.2);
5986 let channel_reserve = chan_stat.channel_reserve_msat;
5987 let feerate = get_feerate!(nodes[0], chan.2);
5989 // 2* and +1 HTLCs on the commit tx fee calculation for the fee spike reserve.
5990 let (payment_preimage_1, payment_hash_1, payment_secret_1) = get_payment_preimage_hash!(nodes[1]);
5992 let (_, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[1]);
5993 let amt_2 = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 2 + 1) - amt_1;
5994 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
5995 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();
5996 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();
5998 // Send 2 payments which pass reserve checks but get stuck in the holding cell.
5999 nodes[0].node.send_payment(&route_1, payment_hash_1, &Some(payment_secret_1)).unwrap();
6000 chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6001 assert_eq!(chan_stat.holding_cell_outbound_amount_msat, amt_1);
6002 nodes[0].node.send_payment(&route_2, payment_hash_2, &Some(payment_secret_2)).unwrap();
6003 chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6004 assert_eq!(chan_stat.holding_cell_outbound_amount_msat, amt_1 + amt_2);
6006 // Flush the pending fee update.
6007 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
6008 let (revoke_and_ack, commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
6009 check_added_monitors!(nodes[1], 1);
6010 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_and_ack);
6011 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed);
6012 check_added_monitors!(nodes[0], 2);
6014 // Upon receipt of the RAA, there will be an attempt to resend the holding cell HTLCs,
6015 // but now that the fee has been raised the second payment will now fail, causing us
6016 // to surface its failure to the user. The first payment should succeed.
6017 chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6018 assert_eq!(chan_stat.holding_cell_outbound_amount_msat, 0);
6019 nodes[0].logger.assert_log("lightning::ln::channel".to_string(), "Freeing holding cell with 2 HTLC updates".to_string(), 1);
6020 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);
6021 nodes[0].logger.assert_log("lightning::ln::channel".to_string(), failure_log.to_string(), 1);
6023 // Check that the second payment failed to be sent out.
6024 let events = nodes[0].node.get_and_clear_pending_events();
6025 assert_eq!(events.len(), 1);
6027 &Event::PaymentFailed { ref payment_hash, ref rejected_by_dest, ref error_code, ref error_data } => {
6028 assert_eq!(payment_hash_2.clone(), *payment_hash);
6029 assert_eq!(*rejected_by_dest, false);
6030 assert_eq!(*error_code, None);
6031 assert_eq!(*error_data, None);
6033 _ => panic!("Unexpected event"),
6036 // Complete the first payment and the RAA from the fee update.
6037 let (payment_event, send_raa_event) = {
6038 let mut msgs = nodes[0].node.get_and_clear_pending_msg_events();
6039 assert_eq!(msgs.len(), 2);
6040 (SendEvent::from_event(msgs.remove(0)), msgs.remove(0))
6042 let raa = match send_raa_event {
6043 MessageSendEvent::SendRevokeAndACK { msg, .. } => msg,
6044 _ => panic!("Unexpected event"),
6046 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &raa);
6047 check_added_monitors!(nodes[1], 1);
6048 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
6049 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
6050 let events = nodes[1].node.get_and_clear_pending_events();
6051 assert_eq!(events.len(), 1);
6053 Event::PendingHTLCsForwardable { .. } => {},
6054 _ => panic!("Unexpected event"),
6056 nodes[1].node.process_pending_htlc_forwards();
6057 let events = nodes[1].node.get_and_clear_pending_events();
6058 assert_eq!(events.len(), 1);
6060 Event::PaymentReceived { .. } => {},
6061 _ => panic!("Unexpected event"),
6063 nodes[1].node.claim_funds(payment_preimage_1, &None, amt_1);
6064 check_added_monitors!(nodes[1], 1);
6065 let update_msgs = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
6066 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_msgs.update_fulfill_htlcs[0]);
6067 commitment_signed_dance!(nodes[0], nodes[1], update_msgs.commitment_signed, false, true);
6068 let events = nodes[0].node.get_and_clear_pending_events();
6069 assert_eq!(events.len(), 1);
6071 Event::PaymentSent { ref payment_preimage } => {
6072 assert_eq!(*payment_preimage, payment_preimage_1);
6074 _ => panic!("Unexpected event"),
6078 // Test that if we fail to forward an HTLC that is being freed from the holding cell that the
6079 // HTLC is failed backwards. We trigger this failure to forward the freed HTLC by increasing
6080 // our fee while the HTLC is in the holding cell such that the HTLC is no longer affordable
6083 fn test_fail_holding_cell_htlc_upon_free_multihop() {
6084 let chanmon_cfgs = create_chanmon_cfgs(3);
6085 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
6086 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
6087 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
6088 let chan_0_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6089 let chan_1_2 = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6090 let logger = test_utils::TestLogger::new();
6092 // First nodes[1] generates an update_fee, setting the channel's
6093 // pending_update_fee.
6094 nodes[1].node.update_fee(chan_1_2.2, get_feerate!(nodes[1], chan_1_2.2) + 20).unwrap();
6095 check_added_monitors!(nodes[1], 1);
6097 let events = nodes[1].node.get_and_clear_pending_msg_events();
6098 assert_eq!(events.len(), 1);
6099 let (update_msg, commitment_signed) = match events[0] {
6100 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
6101 (update_fee.as_ref(), commitment_signed)
6103 _ => panic!("Unexpected event"),
6106 nodes[2].node.handle_update_fee(&nodes[1].node.get_our_node_id(), update_msg.unwrap());
6108 let mut chan_stat = get_channel_value_stat!(nodes[0], chan_0_1.2);
6109 let channel_reserve = chan_stat.channel_reserve_msat;
6110 let feerate = get_feerate!(nodes[0], chan_0_1.2);
6112 // Send a payment which passes reserve checks but gets stuck in the holding cell.
6114 let total_routing_fee_msat = (nodes.len() - 2) as u64 * feemsat;
6115 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[2]);
6116 let max_can_send = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 1 + 1) - total_routing_fee_msat;
6117 let payment_event = {
6118 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6119 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();
6120 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6121 check_added_monitors!(nodes[0], 1);
6123 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
6124 assert_eq!(events.len(), 1);
6126 SendEvent::from_event(events.remove(0))
6128 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
6129 check_added_monitors!(nodes[1], 0);
6130 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
6131 expect_pending_htlcs_forwardable!(nodes[1]);
6133 chan_stat = get_channel_value_stat!(nodes[1], chan_1_2.2);
6134 assert_eq!(chan_stat.holding_cell_outbound_amount_msat, max_can_send);
6136 // Flush the pending fee update.
6137 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), commitment_signed);
6138 let (raa, commitment_signed) = get_revoke_commit_msgs!(nodes[2], nodes[1].node.get_our_node_id());
6139 check_added_monitors!(nodes[2], 1);
6140 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &raa);
6141 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &commitment_signed);
6142 check_added_monitors!(nodes[1], 2);
6144 // A final RAA message is generated to finalize the fee update.
6145 let events = nodes[1].node.get_and_clear_pending_msg_events();
6146 assert_eq!(events.len(), 1);
6148 let raa_msg = match &events[0] {
6149 &MessageSendEvent::SendRevokeAndACK { ref msg, .. } => {
6152 _ => panic!("Unexpected event"),
6155 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &raa_msg);
6156 check_added_monitors!(nodes[2], 1);
6157 assert!(nodes[2].node.get_and_clear_pending_msg_events().is_empty());
6159 // nodes[1]'s ChannelManager will now signal that we have HTLC forwards to process.
6160 let process_htlc_forwards_event = nodes[1].node.get_and_clear_pending_events();
6161 assert_eq!(process_htlc_forwards_event.len(), 1);
6162 match &process_htlc_forwards_event[0] {
6163 &Event::PendingHTLCsForwardable { .. } => {},
6164 _ => panic!("Unexpected event"),
6167 // In response, we call ChannelManager's process_pending_htlc_forwards
6168 nodes[1].node.process_pending_htlc_forwards();
6169 check_added_monitors!(nodes[1], 1);
6171 // This causes the HTLC to be failed backwards.
6172 let fail_event = nodes[1].node.get_and_clear_pending_msg_events();
6173 assert_eq!(fail_event.len(), 1);
6174 let (fail_msg, commitment_signed) = match &fail_event[0] {
6175 &MessageSendEvent::UpdateHTLCs { ref updates, .. } => {
6176 assert_eq!(updates.update_add_htlcs.len(), 0);
6177 assert_eq!(updates.update_fulfill_htlcs.len(), 0);
6178 assert_eq!(updates.update_fail_malformed_htlcs.len(), 0);
6179 assert_eq!(updates.update_fail_htlcs.len(), 1);
6180 (updates.update_fail_htlcs[0].clone(), updates.commitment_signed.clone())
6182 _ => panic!("Unexpected event"),
6185 // Pass the failure messages back to nodes[0].
6186 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &fail_msg);
6187 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed);
6189 // Complete the HTLC failure+removal process.
6190 let (raa, commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6191 check_added_monitors!(nodes[0], 1);
6192 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &raa);
6193 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &commitment_signed);
6194 check_added_monitors!(nodes[1], 2);
6195 let final_raa_event = nodes[1].node.get_and_clear_pending_msg_events();
6196 assert_eq!(final_raa_event.len(), 1);
6197 let raa = match &final_raa_event[0] {
6198 &MessageSendEvent::SendRevokeAndACK { ref msg, .. } => msg.clone(),
6199 _ => panic!("Unexpected event"),
6201 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &raa);
6202 let fail_msg_event = nodes[0].node.get_and_clear_pending_msg_events();
6203 assert_eq!(fail_msg_event.len(), 1);
6204 match &fail_msg_event[0] {
6205 &MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
6206 _ => panic!("Unexpected event"),
6208 let failure_event = nodes[0].node.get_and_clear_pending_events();
6209 assert_eq!(failure_event.len(), 1);
6210 match &failure_event[0] {
6211 &Event::PaymentFailed { rejected_by_dest, .. } => {
6212 assert!(!rejected_by_dest);
6214 _ => panic!("Unexpected event"),
6216 check_added_monitors!(nodes[0], 1);
6219 // BOLT 2 Requirements for the Sender when constructing and sending an update_add_htlc message.
6220 // 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.
6221 //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.
6224 fn test_update_add_htlc_bolt2_sender_value_below_minimum_msat() {
6225 //BOLT2 Requirement: MUST NOT offer amount_msat below the receiving node's htlc_minimum_msat (same validation check catches both of these)
6226 let chanmon_cfgs = create_chanmon_cfgs(2);
6227 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6228 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6229 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6230 let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6232 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6233 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6234 let logger = test_utils::TestLogger::new();
6235 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();
6236 route.paths[0][0].fee_msat = 100;
6238 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)), true, APIError::ChannelUnavailable { ref err },
6239 assert!(regex::Regex::new(r"Cannot send less than their minimum HTLC value \(\d+\)").unwrap().is_match(err)));
6240 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
6241 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot send less than their minimum HTLC value".to_string(), 1);
6245 fn test_update_add_htlc_bolt2_sender_zero_value_msat() {
6246 //BOLT2 Requirement: MUST offer amount_msat greater than 0.
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 (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6254 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6255 let logger = test_utils::TestLogger::new();
6256 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();
6257 route.paths[0][0].fee_msat = 0;
6258 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)), true, APIError::ChannelUnavailable { ref err },
6259 assert_eq!(err, "Cannot send 0-msat HTLC"));
6261 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
6262 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot send 0-msat HTLC".to_string(), 1);
6266 fn test_update_add_htlc_bolt2_receiver_zero_value_msat() {
6267 //BOLT2 Requirement: MUST offer amount_msat greater than 0.
6268 let chanmon_cfgs = create_chanmon_cfgs(2);
6269 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6270 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6271 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6272 let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6274 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6275 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6276 let logger = test_utils::TestLogger::new();
6277 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();
6278 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6279 check_added_monitors!(nodes[0], 1);
6280 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6281 updates.update_add_htlcs[0].amount_msat = 0;
6283 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6284 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Remote side tried to send a 0-msat HTLC".to_string(), 1);
6285 check_closed_broadcast!(nodes[1], true).unwrap();
6286 check_added_monitors!(nodes[1], 1);
6290 fn test_update_add_htlc_bolt2_sender_cltv_expiry_too_high() {
6291 //BOLT 2 Requirement: MUST set cltv_expiry less than 500000000.
6292 //It is enforced when constructing a route.
6293 let chanmon_cfgs = create_chanmon_cfgs(2);
6294 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6295 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6296 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6297 let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 0, InitFeatures::known(), InitFeatures::known());
6298 let logger = test_utils::TestLogger::new();
6300 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6302 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6303 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();
6304 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)), true, APIError::RouteError { ref err },
6305 assert_eq!(err, &"Channel CLTV overflowed?"));
6309 fn test_update_add_htlc_bolt2_sender_exceed_max_htlc_num_and_htlc_id_increment() {
6310 //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.
6311 //BOLT 2 Requirement: for the first HTLC it offers MUST set id to 0.
6312 //BOLT 2 Requirement: MUST increase the value of id by 1 for each successive offer.
6313 let chanmon_cfgs = create_chanmon_cfgs(2);
6314 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6315 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6316 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6317 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 0, InitFeatures::known(), InitFeatures::known());
6318 let max_accepted_htlcs = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().counterparty_max_accepted_htlcs as u64;
6320 let logger = test_utils::TestLogger::new();
6321 for i in 0..max_accepted_htlcs {
6322 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6323 let payment_event = {
6324 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6325 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();
6326 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6327 check_added_monitors!(nodes[0], 1);
6329 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
6330 assert_eq!(events.len(), 1);
6331 if let MessageSendEvent::UpdateHTLCs { node_id: _, updates: msgs::CommitmentUpdate{ update_add_htlcs: ref htlcs, .. }, } = events[0] {
6332 assert_eq!(htlcs[0].htlc_id, i);
6336 SendEvent::from_event(events.remove(0))
6338 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
6339 check_added_monitors!(nodes[1], 0);
6340 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
6342 expect_pending_htlcs_forwardable!(nodes[1]);
6343 expect_payment_received!(nodes[1], our_payment_hash, our_payment_secret, 100000);
6345 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6346 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6347 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();
6348 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)), true, APIError::ChannelUnavailable { ref err },
6349 assert!(regex::Regex::new(r"Cannot push more than their max accepted HTLCs \(\d+\)").unwrap().is_match(err)));
6351 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
6352 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot push more than their max accepted HTLCs".to_string(), 1);
6356 fn test_update_add_htlc_bolt2_sender_exceed_max_htlc_value_in_flight() {
6357 //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.
6358 let chanmon_cfgs = create_chanmon_cfgs(2);
6359 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6360 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6361 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6362 let channel_value = 100000;
6363 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, channel_value, 0, InitFeatures::known(), InitFeatures::known());
6364 let max_in_flight = get_channel_value_stat!(nodes[0], chan.2).counterparty_max_htlc_value_in_flight_msat;
6366 send_payment(&nodes[0], &vec!(&nodes[1])[..], max_in_flight, max_in_flight);
6368 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6369 // Manually create a route over our max in flight (which our router normally automatically
6371 let route = Route { paths: vec![vec![RouteHop {
6372 pubkey: nodes[1].node.get_our_node_id(), node_features: NodeFeatures::known(), channel_features: ChannelFeatures::known(),
6373 short_channel_id: nodes[1].node.list_usable_channels()[0].short_channel_id.unwrap(),
6374 fee_msat: max_in_flight + 1, cltv_expiry_delta: TEST_FINAL_CLTV
6376 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)), true, APIError::ChannelUnavailable { ref err },
6377 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)));
6379 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
6380 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);
6382 send_payment(&nodes[0], &[&nodes[1]], max_in_flight, max_in_flight);
6385 // BOLT 2 Requirements for the Receiver when handling an update_add_htlc message.
6387 fn test_update_add_htlc_bolt2_receiver_check_amount_received_more_than_min() {
6388 //BOLT2 Requirement: receiving an amount_msat equal to 0, OR less than its own htlc_minimum_msat -> SHOULD fail the channel.
6389 let chanmon_cfgs = create_chanmon_cfgs(2);
6390 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6391 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6392 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6393 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6394 let htlc_minimum_msat: u64;
6396 let chan_lock = nodes[0].node.channel_state.lock().unwrap();
6397 let channel = chan_lock.by_id.get(&chan.2).unwrap();
6398 htlc_minimum_msat = channel.get_holder_htlc_minimum_msat();
6401 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6402 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6403 let logger = test_utils::TestLogger::new();
6404 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();
6405 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6406 check_added_monitors!(nodes[0], 1);
6407 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6408 updates.update_add_htlcs[0].amount_msat = htlc_minimum_msat-1;
6409 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6410 assert!(nodes[1].node.list_channels().is_empty());
6411 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6412 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()));
6413 check_added_monitors!(nodes[1], 1);
6417 fn test_update_add_htlc_bolt2_receiver_sender_can_afford_amount_sent() {
6418 //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
6419 let chanmon_cfgs = create_chanmon_cfgs(2);
6420 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6421 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6422 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6423 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6424 let logger = test_utils::TestLogger::new();
6426 let chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6427 let channel_reserve = chan_stat.channel_reserve_msat;
6428 let feerate = get_feerate!(nodes[0], chan.2);
6429 // The 2* and +1 are for the fee spike reserve.
6430 let commit_tx_fee_outbound = 2 * commit_tx_fee_msat(feerate, 1 + 1);
6432 let max_can_send = 5000000 - channel_reserve - commit_tx_fee_outbound;
6433 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6434 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6435 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();
6436 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6437 check_added_monitors!(nodes[0], 1);
6438 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6440 // Even though channel-initiator senders are required to respect the fee_spike_reserve,
6441 // at this time channel-initiatee receivers are not required to enforce that senders
6442 // respect the fee_spike_reserve.
6443 updates.update_add_htlcs[0].amount_msat = max_can_send + commit_tx_fee_outbound + 1;
6444 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6446 assert!(nodes[1].node.list_channels().is_empty());
6447 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6448 assert_eq!(err_msg.data, "Remote HTLC add would put them under remote reserve value");
6449 check_added_monitors!(nodes[1], 1);
6453 fn test_update_add_htlc_bolt2_receiver_check_max_htlc_limit() {
6454 //BOLT 2 Requirement: if a sending node adds more than its max_accepted_htlcs HTLCs to its local commitment transaction: SHOULD fail the channel
6455 //BOLT 2 Requirement: MUST allow multiple HTLCs with the same payment_hash.
6456 let chanmon_cfgs = create_chanmon_cfgs(2);
6457 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6458 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6459 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6460 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6461 let logger = test_utils::TestLogger::new();
6463 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6464 let session_priv = SecretKey::from_slice(&[42; 32]).unwrap();
6466 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6467 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();
6469 let cur_height = nodes[0].node.best_block.read().unwrap().height() + 1;
6470 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::signing_only(), &route.paths[0], &session_priv).unwrap();
6471 let (onion_payloads, _htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route.paths[0], 3999999, &Some(our_payment_secret), cur_height).unwrap();
6472 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &our_payment_hash);
6474 let mut msg = msgs::UpdateAddHTLC {
6478 payment_hash: our_payment_hash,
6479 cltv_expiry: htlc_cltv,
6480 onion_routing_packet: onion_packet.clone(),
6483 for i in 0..super::channel::OUR_MAX_HTLCS {
6484 msg.htlc_id = i as u64;
6485 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg);
6487 msg.htlc_id = (super::channel::OUR_MAX_HTLCS) as u64;
6488 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg);
6490 assert!(nodes[1].node.list_channels().is_empty());
6491 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6492 assert!(regex::Regex::new(r"Remote tried to push more than our max accepted HTLCs \(\d+\)").unwrap().is_match(err_msg.data.as_str()));
6493 check_added_monitors!(nodes[1], 1);
6497 fn test_update_add_htlc_bolt2_receiver_check_max_in_flight_msat() {
6498 //OR adds more than its max_htlc_value_in_flight_msat worth of offered HTLCs to its local commitment transaction: SHOULD fail the channel
6499 let chanmon_cfgs = create_chanmon_cfgs(2);
6500 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6501 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6502 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6503 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
6504 let logger = test_utils::TestLogger::new();
6506 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6507 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6508 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();
6509 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6510 check_added_monitors!(nodes[0], 1);
6511 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6512 updates.update_add_htlcs[0].amount_msat = get_channel_value_stat!(nodes[1], chan.2).counterparty_max_htlc_value_in_flight_msat + 1;
6513 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6515 assert!(nodes[1].node.list_channels().is_empty());
6516 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6517 assert!(regex::Regex::new("Remote HTLC add would put them over our max HTLC value").unwrap().is_match(err_msg.data.as_str()));
6518 check_added_monitors!(nodes[1], 1);
6522 fn test_update_add_htlc_bolt2_receiver_check_cltv_expiry() {
6523 //BOLT2 Requirement: if sending node sets cltv_expiry to greater or equal to 500000000: SHOULD fail the channel.
6524 let chanmon_cfgs = create_chanmon_cfgs(2);
6525 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6526 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6527 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6528 let logger = test_utils::TestLogger::new();
6530 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6531 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6532 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6533 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();
6534 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6535 check_added_monitors!(nodes[0], 1);
6536 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6537 updates.update_add_htlcs[0].cltv_expiry = 500000000;
6538 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6540 assert!(nodes[1].node.list_channels().is_empty());
6541 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6542 assert_eq!(err_msg.data,"Remote provided CLTV expiry in seconds instead of block height");
6543 check_added_monitors!(nodes[1], 1);
6547 fn test_update_add_htlc_bolt2_receiver_check_repeated_id_ignore() {
6548 //BOLT 2 requirement: if the sender did not previously acknowledge the commitment of that HTLC: MUST ignore a repeated id value after a reconnection.
6549 // We test this by first testing that that repeated HTLCs pass commitment signature checks
6550 // after disconnect and that non-sequential htlc_ids result in a channel failure.
6551 let chanmon_cfgs = create_chanmon_cfgs(2);
6552 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6553 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6554 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6555 let logger = test_utils::TestLogger::new();
6557 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6558 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6559 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6560 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();
6561 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6562 check_added_monitors!(nodes[0], 1);
6563 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6564 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6566 //Disconnect and Reconnect
6567 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
6568 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
6569 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
6570 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
6571 assert_eq!(reestablish_1.len(), 1);
6572 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
6573 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
6574 assert_eq!(reestablish_2.len(), 1);
6575 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
6576 handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
6577 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
6578 handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
6581 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6582 assert_eq!(updates.commitment_signed.htlc_signatures.len(), 1);
6583 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &updates.commitment_signed);
6584 check_added_monitors!(nodes[1], 1);
6585 let _bs_responses = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
6587 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6589 assert!(nodes[1].node.list_channels().is_empty());
6590 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6591 assert!(regex::Regex::new(r"Remote skipped HTLC ID \(skipped ID: \d+\)").unwrap().is_match(err_msg.data.as_str()));
6592 check_added_monitors!(nodes[1], 1);
6596 fn test_update_fulfill_htlc_bolt2_update_fulfill_htlc_before_commitment() {
6597 //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.
6599 let chanmon_cfgs = create_chanmon_cfgs(2);
6600 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6601 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6602 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6603 let logger = test_utils::TestLogger::new();
6604 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6605 let (our_payment_preimage, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6606 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6607 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();
6608 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6610 check_added_monitors!(nodes[0], 1);
6611 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6612 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6614 let update_msg = msgs::UpdateFulfillHTLC{
6617 payment_preimage: our_payment_preimage,
6620 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_msg);
6622 assert!(nodes[0].node.list_channels().is_empty());
6623 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6624 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()));
6625 check_added_monitors!(nodes[0], 1);
6629 fn test_update_fulfill_htlc_bolt2_update_fail_htlc_before_commitment() {
6630 //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.
6632 let chanmon_cfgs = create_chanmon_cfgs(2);
6633 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6634 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6635 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6636 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6637 let logger = test_utils::TestLogger::new();
6639 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6640 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6641 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();
6642 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6643 check_added_monitors!(nodes[0], 1);
6644 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6645 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6647 let update_msg = msgs::UpdateFailHTLC{
6650 reason: msgs::OnionErrorPacket { data: Vec::new()},
6653 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_msg);
6655 assert!(nodes[0].node.list_channels().is_empty());
6656 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6657 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()));
6658 check_added_monitors!(nodes[0], 1);
6662 fn test_update_fulfill_htlc_bolt2_update_fail_malformed_htlc_before_commitment() {
6663 //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.
6665 let chanmon_cfgs = create_chanmon_cfgs(2);
6666 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6667 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6668 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6669 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6670 let logger = test_utils::TestLogger::new();
6672 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6673 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6674 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();
6675 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6676 check_added_monitors!(nodes[0], 1);
6677 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6678 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6679 let update_msg = msgs::UpdateFailMalformedHTLC{
6682 sha256_of_onion: [1; 32],
6683 failure_code: 0x8000,
6686 nodes[0].node.handle_update_fail_malformed_htlc(&nodes[1].node.get_our_node_id(), &update_msg);
6688 assert!(nodes[0].node.list_channels().is_empty());
6689 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6690 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()));
6691 check_added_monitors!(nodes[0], 1);
6695 fn test_update_fulfill_htlc_bolt2_incorrect_htlc_id() {
6696 //BOLT 2 Requirement: A receiving node: if the id does not correspond to an HTLC in its current commitment transaction MUST fail the channel.
6698 let chanmon_cfgs = create_chanmon_cfgs(2);
6699 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6700 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6701 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6702 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6704 let our_payment_preimage = route_payment(&nodes[0], &[&nodes[1]], 100000).0;
6706 nodes[1].node.claim_funds(our_payment_preimage, &None, 100_000);
6707 check_added_monitors!(nodes[1], 1);
6709 let events = nodes[1].node.get_and_clear_pending_msg_events();
6710 assert_eq!(events.len(), 1);
6711 let mut update_fulfill_msg: msgs::UpdateFulfillHTLC = {
6713 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, .. } } => {
6714 assert!(update_add_htlcs.is_empty());
6715 assert_eq!(update_fulfill_htlcs.len(), 1);
6716 assert!(update_fail_htlcs.is_empty());
6717 assert!(update_fail_malformed_htlcs.is_empty());
6718 assert!(update_fee.is_none());
6719 update_fulfill_htlcs[0].clone()
6721 _ => panic!("Unexpected event"),
6725 update_fulfill_msg.htlc_id = 1;
6727 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_msg);
6729 assert!(nodes[0].node.list_channels().is_empty());
6730 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6731 assert_eq!(err_msg.data, "Remote tried to fulfill/fail an HTLC we couldn't find");
6732 check_added_monitors!(nodes[0], 1);
6736 fn test_update_fulfill_htlc_bolt2_wrong_preimage() {
6737 //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.
6739 let chanmon_cfgs = create_chanmon_cfgs(2);
6740 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6741 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6742 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6743 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6745 let our_payment_preimage = route_payment(&nodes[0], &[&nodes[1]], 100000).0;
6747 nodes[1].node.claim_funds(our_payment_preimage, &None, 100_000);
6748 check_added_monitors!(nodes[1], 1);
6750 let events = nodes[1].node.get_and_clear_pending_msg_events();
6751 assert_eq!(events.len(), 1);
6752 let mut update_fulfill_msg: msgs::UpdateFulfillHTLC = {
6754 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, .. } } => {
6755 assert!(update_add_htlcs.is_empty());
6756 assert_eq!(update_fulfill_htlcs.len(), 1);
6757 assert!(update_fail_htlcs.is_empty());
6758 assert!(update_fail_malformed_htlcs.is_empty());
6759 assert!(update_fee.is_none());
6760 update_fulfill_htlcs[0].clone()
6762 _ => panic!("Unexpected event"),
6766 update_fulfill_msg.payment_preimage = PaymentPreimage([1; 32]);
6768 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_msg);
6770 assert!(nodes[0].node.list_channels().is_empty());
6771 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6772 assert!(regex::Regex::new(r"Remote tried to fulfill HTLC \(\d+\) with an incorrect preimage").unwrap().is_match(err_msg.data.as_str()));
6773 check_added_monitors!(nodes[0], 1);
6777 fn test_update_fulfill_htlc_bolt2_missing_badonion_bit_for_malformed_htlc_message() {
6778 //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.
6780 let chanmon_cfgs = create_chanmon_cfgs(2);
6781 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6782 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6783 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6784 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
6785 let logger = test_utils::TestLogger::new();
6787 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
6788 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6789 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();
6790 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6791 check_added_monitors!(nodes[0], 1);
6793 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6794 updates.update_add_htlcs[0].onion_routing_packet.version = 1; //Produce a malformed HTLC message
6796 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6797 check_added_monitors!(nodes[1], 0);
6798 commitment_signed_dance!(nodes[1], nodes[0], updates.commitment_signed, false, true);
6800 let events = nodes[1].node.get_and_clear_pending_msg_events();
6802 let mut update_msg: msgs::UpdateFailMalformedHTLC = {
6804 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, .. } } => {
6805 assert!(update_add_htlcs.is_empty());
6806 assert!(update_fulfill_htlcs.is_empty());
6807 assert!(update_fail_htlcs.is_empty());
6808 assert_eq!(update_fail_malformed_htlcs.len(), 1);
6809 assert!(update_fee.is_none());
6810 update_fail_malformed_htlcs[0].clone()
6812 _ => panic!("Unexpected event"),
6815 update_msg.failure_code &= !0x8000;
6816 nodes[0].node.handle_update_fail_malformed_htlc(&nodes[1].node.get_our_node_id(), &update_msg);
6818 assert!(nodes[0].node.list_channels().is_empty());
6819 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6820 assert_eq!(err_msg.data, "Got update_fail_malformed_htlc with BADONION not set");
6821 check_added_monitors!(nodes[0], 1);
6825 fn test_update_fulfill_htlc_bolt2_after_malformed_htlc_message_must_forward_update_fail_htlc() {
6826 //BOLT 2 Requirement: a receiving node which has an outgoing HTLC canceled by update_fail_malformed_htlc:
6827 // * 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.
6829 let chanmon_cfgs = create_chanmon_cfgs(3);
6830 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
6831 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
6832 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
6833 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
6834 create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
6835 let logger = test_utils::TestLogger::new();
6837 let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[2]);
6840 let mut payment_event = {
6841 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6842 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();
6843 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
6844 check_added_monitors!(nodes[0], 1);
6845 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
6846 assert_eq!(events.len(), 1);
6847 SendEvent::from_event(events.remove(0))
6849 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
6850 check_added_monitors!(nodes[1], 0);
6851 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
6852 expect_pending_htlcs_forwardable!(nodes[1]);
6853 let mut events_2 = nodes[1].node.get_and_clear_pending_msg_events();
6854 assert_eq!(events_2.len(), 1);
6855 check_added_monitors!(nodes[1], 1);
6856 payment_event = SendEvent::from_event(events_2.remove(0));
6857 assert_eq!(payment_event.msgs.len(), 1);
6860 payment_event.msgs[0].onion_routing_packet.version = 1; //Produce a malformed HTLC message
6861 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]);
6862 check_added_monitors!(nodes[2], 0);
6863 commitment_signed_dance!(nodes[2], nodes[1], payment_event.commitment_msg, false, true);
6865 let events_3 = nodes[2].node.get_and_clear_pending_msg_events();
6866 assert_eq!(events_3.len(), 1);
6867 let update_msg : (msgs::UpdateFailMalformedHTLC, msgs::CommitmentSigned) = {
6869 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 } } => {
6870 assert!(update_add_htlcs.is_empty());
6871 assert!(update_fulfill_htlcs.is_empty());
6872 assert!(update_fail_htlcs.is_empty());
6873 assert_eq!(update_fail_malformed_htlcs.len(), 1);
6874 assert!(update_fee.is_none());
6875 (update_fail_malformed_htlcs[0].clone(), commitment_signed.clone())
6877 _ => panic!("Unexpected event"),
6881 nodes[1].node.handle_update_fail_malformed_htlc(&nodes[2].node.get_our_node_id(), &update_msg.0);
6883 check_added_monitors!(nodes[1], 0);
6884 commitment_signed_dance!(nodes[1], nodes[2], update_msg.1, false, true);
6885 expect_pending_htlcs_forwardable!(nodes[1]);
6886 let events_4 = nodes[1].node.get_and_clear_pending_msg_events();
6887 assert_eq!(events_4.len(), 1);
6889 //Confirm that handlinge the update_malformed_htlc message produces an update_fail_htlc message to be forwarded back along the route
6891 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, .. } } => {
6892 assert!(update_add_htlcs.is_empty());
6893 assert!(update_fulfill_htlcs.is_empty());
6894 assert_eq!(update_fail_htlcs.len(), 1);
6895 assert!(update_fail_malformed_htlcs.is_empty());
6896 assert!(update_fee.is_none());
6898 _ => panic!("Unexpected event"),
6901 check_added_monitors!(nodes[1], 1);
6904 fn do_test_failure_delay_dust_htlc_local_commitment(announce_latest: bool) {
6905 // Dust-HTLC failure updates must be delayed until failure-trigger tx (in this case local commitment) reach ANTI_REORG_DELAY
6906 // 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
6907 // HTLC could have been removed from lastest local commitment tx but still valid until we get remote RAA
6909 let mut chanmon_cfgs = create_chanmon_cfgs(2);
6910 chanmon_cfgs[0].keys_manager.disable_revocation_policy_check = true;
6911 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6912 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6913 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6914 let chan =create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6916 let bs_dust_limit = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().holder_dust_limit_satoshis;
6918 // We route 2 dust-HTLCs between A and B
6919 let (_, payment_hash_1, _) = route_payment(&nodes[0], &[&nodes[1]], bs_dust_limit*1000);
6920 let (_, payment_hash_2, _) = route_payment(&nodes[0], &[&nodes[1]], bs_dust_limit*1000);
6921 route_payment(&nodes[0], &[&nodes[1]], 1000000);
6923 // Cache one local commitment tx as previous
6924 let as_prev_commitment_tx = get_local_commitment_txn!(nodes[0], chan.2);
6926 // Fail one HTLC to prune it in the will-be-latest-local commitment tx
6927 assert!(nodes[1].node.fail_htlc_backwards(&payment_hash_2, &None));
6928 check_added_monitors!(nodes[1], 0);
6929 expect_pending_htlcs_forwardable!(nodes[1]);
6930 check_added_monitors!(nodes[1], 1);
6932 let remove = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
6933 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &remove.update_fail_htlcs[0]);
6934 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &remove.commitment_signed);
6935 check_added_monitors!(nodes[0], 1);
6937 // Cache one local commitment tx as lastest
6938 let as_last_commitment_tx = get_local_commitment_txn!(nodes[0], chan.2);
6940 let events = nodes[0].node.get_and_clear_pending_msg_events();
6942 MessageSendEvent::SendRevokeAndACK { node_id, .. } => {
6943 assert_eq!(node_id, nodes[1].node.get_our_node_id());
6945 _ => panic!("Unexpected event"),
6948 MessageSendEvent::UpdateHTLCs { node_id, .. } => {
6949 assert_eq!(node_id, nodes[1].node.get_our_node_id());
6951 _ => panic!("Unexpected event"),
6954 assert_ne!(as_prev_commitment_tx, as_last_commitment_tx);
6955 // Fail the 2 dust-HTLCs, move their failure in maturation buffer (htlc_updated_waiting_threshold_conf)
6956 if announce_latest {
6957 mine_transaction(&nodes[0], &as_last_commitment_tx[0]);
6959 mine_transaction(&nodes[0], &as_prev_commitment_tx[0]);
6962 check_closed_broadcast!(nodes[0], true);
6963 check_added_monitors!(nodes[0], 1);
6965 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
6966 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
6967 let events = nodes[0].node.get_and_clear_pending_events();
6968 // Only 2 PaymentFailed events should show up, over-dust HTLC has to be failed by timeout tx
6969 assert_eq!(events.len(), 2);
6970 let mut first_failed = false;
6971 for event in events {
6973 Event::PaymentFailed { payment_hash, .. } => {
6974 if payment_hash == payment_hash_1 {
6975 assert!(!first_failed);
6976 first_failed = true;
6978 assert_eq!(payment_hash, payment_hash_2);
6981 _ => panic!("Unexpected event"),
6987 fn test_failure_delay_dust_htlc_local_commitment() {
6988 do_test_failure_delay_dust_htlc_local_commitment(true);
6989 do_test_failure_delay_dust_htlc_local_commitment(false);
6992 fn do_test_sweep_outbound_htlc_failure_update(revoked: bool, local: bool) {
6993 // Outbound HTLC-failure updates must be cancelled if we get a reorg before we reach ANTI_REORG_DELAY.
6994 // Broadcast of revoked remote commitment tx, trigger failure-update of dust/non-dust HTLCs
6995 // Broadcast of remote commitment tx, trigger failure-update of dust-HTLCs
6996 // Broadcast of timeout tx on remote commitment tx, trigger failure-udate of non-dust HTLCs
6997 // Broadcast of local commitment tx, trigger failure-update of dust-HTLCs
6998 // Broadcast of HTLC-timeout tx on local commitment tx, trigger failure-update of non-dust HTLCs
7000 let chanmon_cfgs = create_chanmon_cfgs(3);
7001 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
7002 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
7003 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
7004 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
7006 let bs_dust_limit = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().holder_dust_limit_satoshis;
7008 let (_payment_preimage_1, dust_hash, _payment_secret_1) = route_payment(&nodes[0], &[&nodes[1]], bs_dust_limit*1000);
7009 let (_payment_preimage_2, non_dust_hash, _payment_secret_2) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
7011 let as_commitment_tx = get_local_commitment_txn!(nodes[0], chan.2);
7012 let bs_commitment_tx = get_local_commitment_txn!(nodes[1], chan.2);
7014 // We revoked bs_commitment_tx
7016 let (payment_preimage_3, _, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
7017 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_3, 1_000_000);
7020 let mut timeout_tx = Vec::new();
7022 // We fail dust-HTLC 1 by broadcast of local commitment tx
7023 mine_transaction(&nodes[0], &as_commitment_tx[0]);
7024 check_closed_broadcast!(nodes[0], true);
7025 check_added_monitors!(nodes[0], 1);
7026 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7027 timeout_tx.push(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap()[0].clone());
7028 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
7029 expect_payment_failed!(nodes[0], dust_hash, true);
7030 assert_eq!(timeout_tx[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
7031 // We fail non-dust-HTLC 2 by broadcast of local HTLC-timeout tx on local commitment tx
7032 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7033 mine_transaction(&nodes[0], &timeout_tx[0]);
7034 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
7035 expect_payment_failed!(nodes[0], non_dust_hash, true);
7037 // We fail dust-HTLC 1 by broadcast of remote commitment tx. If revoked, fail also non-dust HTLC
7038 mine_transaction(&nodes[0], &bs_commitment_tx[0]);
7039 check_closed_broadcast!(nodes[0], true);
7040 check_added_monitors!(nodes[0], 1);
7041 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7042 timeout_tx.push(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap()[0].clone());
7043 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
7045 expect_payment_failed!(nodes[0], dust_hash, true);
7046 assert_eq!(timeout_tx[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
7047 // We fail non-dust-HTLC 2 by broadcast of local timeout tx on remote commitment tx
7048 mine_transaction(&nodes[0], &timeout_tx[0]);
7049 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7050 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
7051 expect_payment_failed!(nodes[0], non_dust_hash, true);
7053 // If revoked, both dust & non-dust HTLCs should have been failed after ANTI_REORG_DELAY confs of revoked
7055 let events = nodes[0].node.get_and_clear_pending_events();
7056 assert_eq!(events.len(), 2);
7059 Event::PaymentFailed { payment_hash, .. } => {
7060 if payment_hash == dust_hash { first = true; }
7061 else { first = false; }
7063 _ => panic!("Unexpected event"),
7066 Event::PaymentFailed { payment_hash, .. } => {
7067 if first { assert_eq!(payment_hash, non_dust_hash); }
7068 else { assert_eq!(payment_hash, dust_hash); }
7070 _ => panic!("Unexpected event"),
7077 fn test_sweep_outbound_htlc_failure_update() {
7078 do_test_sweep_outbound_htlc_failure_update(false, true);
7079 do_test_sweep_outbound_htlc_failure_update(false, false);
7080 do_test_sweep_outbound_htlc_failure_update(true, false);
7084 fn test_upfront_shutdown_script() {
7085 // BOLT 2 : Option upfront shutdown script, if peer commit its closing_script at channel opening
7086 // enforce it at shutdown message
7088 let mut config = UserConfig::default();
7089 config.channel_options.announced_channel = true;
7090 config.peer_channel_config_limits.force_announced_channel_preference = false;
7091 config.channel_options.commit_upfront_shutdown_pubkey = false;
7092 let user_cfgs = [None, Some(config), None];
7093 let chanmon_cfgs = create_chanmon_cfgs(3);
7094 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
7095 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs);
7096 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
7098 // We test that in case of peer committing upfront to a script, if it changes at closing, we refuse to sign
7099 let flags = InitFeatures::known();
7100 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 1000000, 1000000, flags.clone(), flags.clone());
7101 nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7102 let mut node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[2].node.get_our_node_id());
7103 node_0_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
7104 // Test we enforce upfront_scriptpbukey if by providing a diffrent one at closing that we disconnect peer
7105 nodes[2].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
7106 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()));
7107 check_added_monitors!(nodes[2], 1);
7109 // We test that in case of peer committing upfront to a script, if it doesn't change at closing, we sign
7110 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 1000000, 1000000, flags.clone(), flags.clone());
7111 nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7112 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[2].node.get_our_node_id());
7113 // We test that in case of peer committing upfront to a script, if it oesn't change at closing, we sign
7114 nodes[2].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
7115 let events = nodes[2].node.get_and_clear_pending_msg_events();
7116 assert_eq!(events.len(), 1);
7118 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[0].node.get_our_node_id()) }
7119 _ => panic!("Unexpected event"),
7122 // We test that if case of peer non-signaling we don't enforce committed script at channel opening
7123 let flags_no = InitFeatures::known().clear_upfront_shutdown_script();
7124 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, flags_no, flags.clone());
7125 nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7126 let mut node_1_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
7127 node_1_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
7128 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown);
7129 let events = nodes[1].node.get_and_clear_pending_msg_events();
7130 assert_eq!(events.len(), 1);
7132 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[0].node.get_our_node_id()) }
7133 _ => panic!("Unexpected event"),
7136 // We test that if user opt-out, we provide a zero-length script at channel opening and we are able to close
7137 // channel smoothly, opt-out is from channel initiator here
7138 let chan = create_announced_chan_between_nodes_with_value(&nodes, 1, 0, 1000000, 1000000, flags.clone(), flags.clone());
7139 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7140 let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
7141 node_0_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
7142 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
7143 let events = nodes[0].node.get_and_clear_pending_msg_events();
7144 assert_eq!(events.len(), 1);
7146 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
7147 _ => panic!("Unexpected event"),
7150 //// We test that if user opt-out, we provide a zero-length script at channel opening and we are able to close
7151 //// channel smoothly
7152 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, flags.clone(), flags.clone());
7153 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7154 let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
7155 node_0_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
7156 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
7157 let events = nodes[0].node.get_and_clear_pending_msg_events();
7158 assert_eq!(events.len(), 2);
7160 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
7161 _ => panic!("Unexpected event"),
7164 MessageSendEvent::SendClosingSigned { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
7165 _ => panic!("Unexpected event"),
7170 fn test_upfront_shutdown_script_unsupport_segwit() {
7171 // We test that channel is closed early
7172 // if a segwit program is passed as upfront shutdown script,
7173 // but the peer does not support segwit.
7174 let chanmon_cfgs = create_chanmon_cfgs(2);
7175 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7176 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7177 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7179 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
7181 let mut open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
7182 open_channel.shutdown_scriptpubkey = Present(Builder::new().push_int(16)
7183 .push_slice(&[0, 0])
7186 let features = InitFeatures::known().clear_shutdown_anysegwit();
7187 nodes[0].node.handle_open_channel(&nodes[0].node.get_our_node_id(), features, &open_channel);
7189 let events = nodes[0].node.get_and_clear_pending_msg_events();
7190 assert_eq!(events.len(), 1);
7192 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
7193 assert_eq!(node_id, nodes[0].node.get_our_node_id());
7194 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));
7196 _ => panic!("Unexpected event"),
7201 fn test_shutdown_script_any_segwit_allowed() {
7202 let mut config = UserConfig::default();
7203 config.channel_options.announced_channel = true;
7204 config.peer_channel_config_limits.force_announced_channel_preference = false;
7205 config.channel_options.commit_upfront_shutdown_pubkey = false;
7206 let user_cfgs = [None, Some(config), None];
7207 let chanmon_cfgs = create_chanmon_cfgs(3);
7208 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
7209 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs);
7210 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
7212 //// We test if the remote peer accepts opt_shutdown_anysegwit, a witness program can be used on shutdown
7213 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
7214 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7215 let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
7216 node_0_shutdown.scriptpubkey = Builder::new().push_int(16)
7217 .push_slice(&[0, 0])
7219 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
7220 let events = nodes[0].node.get_and_clear_pending_msg_events();
7221 assert_eq!(events.len(), 2);
7223 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
7224 _ => panic!("Unexpected event"),
7227 MessageSendEvent::SendClosingSigned { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
7228 _ => panic!("Unexpected event"),
7233 fn test_shutdown_script_any_segwit_not_allowed() {
7234 let mut config = UserConfig::default();
7235 config.channel_options.announced_channel = true;
7236 config.peer_channel_config_limits.force_announced_channel_preference = false;
7237 config.channel_options.commit_upfront_shutdown_pubkey = false;
7238 let user_cfgs = [None, Some(config), None];
7239 let chanmon_cfgs = create_chanmon_cfgs(3);
7240 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
7241 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs);
7242 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
7244 //// We test that if the remote peer does not accept opt_shutdown_anysegwit, the witness program cannot be used on shutdown
7245 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
7246 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7247 let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
7248 // Make an any segwit version script
7249 node_0_shutdown.scriptpubkey = Builder::new().push_int(16)
7250 .push_slice(&[0, 0])
7252 let flags_no = InitFeatures::known().clear_shutdown_anysegwit();
7253 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &flags_no, &node_0_shutdown);
7254 let events = nodes[0].node.get_and_clear_pending_msg_events();
7255 assert_eq!(events.len(), 2);
7257 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
7258 assert_eq!(node_id, nodes[1].node.get_our_node_id());
7259 assert_eq!(msg.data, "Got a nonstandard scriptpubkey (60020000) from remote peer".to_owned())
7261 _ => panic!("Unexpected event"),
7263 check_added_monitors!(nodes[0], 1);
7267 fn test_shutdown_script_segwit_but_not_anysegwit() {
7268 let mut config = UserConfig::default();
7269 config.channel_options.announced_channel = true;
7270 config.peer_channel_config_limits.force_announced_channel_preference = false;
7271 config.channel_options.commit_upfront_shutdown_pubkey = false;
7272 let user_cfgs = [None, Some(config), None];
7273 let chanmon_cfgs = create_chanmon_cfgs(3);
7274 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
7275 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs);
7276 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
7278 //// We test that if shutdown any segwit is supported and we send a witness script with 0 version, this is not accepted
7279 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
7280 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7281 let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
7282 // Make a segwit script that is not a valid as any segwit
7283 node_0_shutdown.scriptpubkey = Builder::new().push_int(0)
7284 .push_slice(&[0, 0])
7286 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
7287 let events = nodes[0].node.get_and_clear_pending_msg_events();
7288 assert_eq!(events.len(), 2);
7290 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
7291 assert_eq!(node_id, nodes[1].node.get_our_node_id());
7292 assert_eq!(msg.data, "Got a nonstandard scriptpubkey (00020000) from remote peer".to_owned())
7294 _ => panic!("Unexpected event"),
7296 check_added_monitors!(nodes[0], 1);
7300 fn test_user_configurable_csv_delay() {
7301 // We test our channel constructors yield errors when we pass them absurd csv delay
7303 let mut low_our_to_self_config = UserConfig::default();
7304 low_our_to_self_config.own_channel_config.our_to_self_delay = 6;
7305 let mut high_their_to_self_config = UserConfig::default();
7306 high_their_to_self_config.peer_channel_config_limits.their_to_self_delay = 100;
7307 let user_cfgs = [Some(high_their_to_self_config.clone()), None];
7308 let chanmon_cfgs = create_chanmon_cfgs(2);
7309 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7310 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &user_cfgs);
7311 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7313 // We test config.our_to_self > BREAKDOWN_TIMEOUT is enforced in Channel::new_outbound()
7314 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) {
7316 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())); },
7317 _ => panic!("Unexpected event"),
7319 } else { assert!(false) }
7321 // We test config.our_to_self > BREAKDOWN_TIMEOUT is enforced in Channel::new_from_req()
7322 nodes[1].node.create_channel(nodes[0].node.get_our_node_id(), 1000000, 1000000, 42, None).unwrap();
7323 let mut open_channel = get_event_msg!(nodes[1], MessageSendEvent::SendOpenChannel, nodes[0].node.get_our_node_id());
7324 open_channel.to_self_delay = 200;
7325 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) {
7327 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())); },
7328 _ => panic!("Unexpected event"),
7330 } else { assert!(false); }
7332 // We test msg.to_self_delay <= config.their_to_self_delay is enforced in Chanel::accept_channel()
7333 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 1000000, 1000000, 42, None).unwrap();
7334 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()));
7335 let mut accept_channel = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
7336 accept_channel.to_self_delay = 200;
7337 nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &accept_channel);
7338 if let MessageSendEvent::HandleError { ref action, .. } = nodes[0].node.get_and_clear_pending_msg_events()[0] {
7340 &ErrorAction::SendErrorMessage { ref msg } => {
7341 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()));
7343 _ => { assert!(false); }
7345 } else { assert!(false); }
7347 // We test msg.to_self_delay <= config.their_to_self_delay is enforced in Channel::new_from_req()
7348 nodes[1].node.create_channel(nodes[0].node.get_our_node_id(), 1000000, 1000000, 42, None).unwrap();
7349 let mut open_channel = get_event_msg!(nodes[1], MessageSendEvent::SendOpenChannel, nodes[0].node.get_our_node_id());
7350 open_channel.to_self_delay = 200;
7351 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) {
7353 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())); },
7354 _ => panic!("Unexpected event"),
7356 } else { assert!(false); }
7360 fn test_data_loss_protect() {
7361 // We want to be sure that :
7362 // * we don't broadcast our Local Commitment Tx in case of fallen behind
7363 // (but this is not quite true - we broadcast during Drop because chanmon is out of sync with chanmgr)
7364 // * we close channel in case of detecting other being fallen behind
7365 // * we are able to claim our own outputs thanks to to_remote being static
7366 // TODO: this test is incomplete and the data_loss_protect implementation is incomplete - see issue #775
7372 let mut chanmon_cfgs = create_chanmon_cfgs(2);
7373 // We broadcast during Drop because chanmon is out of sync with chanmgr, which would cause a panic
7374 // during signing due to revoked tx
7375 chanmon_cfgs[0].keys_manager.disable_revocation_policy_check = true;
7376 let keys_manager = &chanmon_cfgs[0].keys_manager;
7379 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7380 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7381 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7383 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
7385 // Cache node A state before any channel update
7386 let previous_node_state = nodes[0].node.encode();
7387 let mut previous_chain_monitor_state = test_utils::TestVecWriter(Vec::new());
7388 nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter().next().unwrap().1.write(&mut previous_chain_monitor_state).unwrap();
7390 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
7391 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
7393 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
7394 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
7396 // Restore node A from previous state
7397 logger = test_utils::TestLogger::with_id(format!("node {}", 0));
7398 let mut chain_monitor = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(&mut ::std::io::Cursor::new(previous_chain_monitor_state.0), keys_manager).unwrap().1;
7399 chain_source = test_utils::TestChainSource::new(Network::Testnet);
7400 tx_broadcaster = test_utils::TestBroadcaster{txn_broadcasted: Mutex::new(Vec::new())};
7401 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
7402 persister = test_utils::TestPersister::new();
7403 monitor = test_utils::TestChainMonitor::new(Some(&chain_source), &tx_broadcaster, &logger, &fee_estimator, &persister, keys_manager);
7405 let mut channel_monitors = HashMap::new();
7406 channel_monitors.insert(OutPoint { txid: chan.3.txid(), index: 0 }, &mut chain_monitor);
7407 <(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 {
7408 keys_manager: keys_manager,
7409 fee_estimator: &fee_estimator,
7410 chain_monitor: &monitor,
7412 tx_broadcaster: &tx_broadcaster,
7413 default_config: UserConfig::default(),
7417 nodes[0].node = &node_state_0;
7418 assert!(monitor.watch_channel(OutPoint { txid: chan.3.txid(), index: 0 }, chain_monitor).is_ok());
7419 nodes[0].chain_monitor = &monitor;
7420 nodes[0].chain_source = &chain_source;
7422 check_added_monitors!(nodes[0], 1);
7424 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
7425 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
7427 let reestablish_0 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
7429 // Check we don't broadcast any transactions following learning of per_commitment_point from B
7430 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_0[0]);
7431 check_added_monitors!(nodes[0], 1);
7434 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
7435 assert_eq!(node_txn.len(), 0);
7438 let mut reestablish_1 = Vec::with_capacity(1);
7439 for msg in nodes[0].node.get_and_clear_pending_msg_events() {
7440 if let MessageSendEvent::SendChannelReestablish { ref node_id, ref msg } = msg {
7441 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
7442 reestablish_1.push(msg.clone());
7443 } else if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg {
7444 } else if let MessageSendEvent::HandleError { ref action, .. } = msg {
7446 &ErrorAction::SendErrorMessage { ref msg } => {
7447 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");
7449 _ => panic!("Unexpected event!"),
7452 panic!("Unexpected event")
7456 // Check we close channel detecting A is fallen-behind
7457 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
7458 assert_eq!(check_closed_broadcast!(nodes[1], true).unwrap().data, "Peer attempted to reestablish channel with a very old local commitment transaction");
7459 check_added_monitors!(nodes[1], 1);
7462 // Check A is able to claim to_remote output
7463 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
7464 assert_eq!(node_txn.len(), 1);
7465 check_spends!(node_txn[0], chan.3);
7466 assert_eq!(node_txn[0].output.len(), 2);
7467 mine_transaction(&nodes[0], &node_txn[0]);
7468 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
7469 let spend_txn = check_spendable_outputs!(nodes[0], 1, node_cfgs[0].keys_manager, 1000000);
7470 assert_eq!(spend_txn.len(), 1);
7471 check_spends!(spend_txn[0], node_txn[0]);
7475 fn test_check_htlc_underpaying() {
7476 // Send payment through A -> B but A is maliciously
7477 // sending a probe payment (i.e less than expected value0
7478 // to B, B should refuse payment.
7480 let chanmon_cfgs = create_chanmon_cfgs(2);
7481 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7482 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7483 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7485 // Create some initial channels
7486 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
7488 let (payment_preimage, payment_hash, _) = route_payment(&nodes[0], &[&nodes[1]], 10_000);
7490 // Node 3 is expecting payment of 100_000 but receive 10_000,
7491 // fail htlc like we didn't know the preimage.
7492 nodes[1].node.claim_funds(payment_preimage, &None, 100_000);
7493 nodes[1].node.process_pending_htlc_forwards();
7495 let events = nodes[1].node.get_and_clear_pending_msg_events();
7496 assert_eq!(events.len(), 1);
7497 let (update_fail_htlc, commitment_signed) = match events[0] {
7498 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 } } => {
7499 assert!(update_add_htlcs.is_empty());
7500 assert!(update_fulfill_htlcs.is_empty());
7501 assert_eq!(update_fail_htlcs.len(), 1);
7502 assert!(update_fail_malformed_htlcs.is_empty());
7503 assert!(update_fee.is_none());
7504 (update_fail_htlcs[0].clone(), commitment_signed)
7506 _ => panic!("Unexpected event"),
7508 check_added_monitors!(nodes[1], 1);
7510 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlc);
7511 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false, true);
7513 // 10_000 msat as u64, followed by a height of CHAN_CONFIRM_DEPTH as u32
7514 let mut expected_failure_data = byte_utils::be64_to_array(10_000).to_vec();
7515 expected_failure_data.extend_from_slice(&byte_utils::be32_to_array(CHAN_CONFIRM_DEPTH));
7516 expect_payment_failed!(nodes[0], payment_hash, true, 0x4000|15, &expected_failure_data[..]);
7517 nodes[1].node.get_and_clear_pending_events();
7521 fn test_announce_disable_channels() {
7522 // Create 2 channels between A and B. Disconnect B. Call timer_tick_occurred and check for generated
7523 // ChannelUpdate. Reconnect B, reestablish and check there is non-generated ChannelUpdate.
7525 let chanmon_cfgs = create_chanmon_cfgs(2);
7526 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7527 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7528 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7530 let short_id_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
7531 let short_id_2 = create_announced_chan_between_nodes(&nodes, 1, 0, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
7532 let short_id_3 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
7535 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
7536 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
7538 nodes[0].node.timer_tick_occurred(); // dirty -> stagged
7539 nodes[0].node.timer_tick_occurred(); // staged -> fresh
7540 let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
7541 assert_eq!(msg_events.len(), 3);
7542 for e in msg_events {
7544 MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
7545 let short_id = msg.contents.short_channel_id;
7546 // Check generated channel_update match list in PendingChannelUpdate
7547 if short_id != short_id_1 && short_id != short_id_2 && short_id != short_id_3 {
7548 panic!("Generated ChannelUpdate for wrong chan!");
7551 _ => panic!("Unexpected event"),
7555 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
7556 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
7557 assert_eq!(reestablish_1.len(), 3);
7558 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
7559 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
7560 assert_eq!(reestablish_2.len(), 3);
7562 // Reestablish chan_1
7563 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
7564 handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
7565 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
7566 handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
7567 // Reestablish chan_2
7568 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[1]);
7569 handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
7570 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[1]);
7571 handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
7572 // Reestablish chan_3
7573 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[2]);
7574 handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
7575 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[2]);
7576 handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
7578 nodes[0].node.timer_tick_occurred();
7579 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
7583 fn test_bump_penalty_txn_on_revoked_commitment() {
7584 // In case of penalty txn with too low feerates for getting into mempools, RBF-bump them to be sure
7585 // we're able to claim outputs on revoked commitment transaction before timelocks expiration
7587 let chanmon_cfgs = create_chanmon_cfgs(2);
7588 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7589 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7590 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7592 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
7593 let logger = test_utils::TestLogger::new();
7595 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
7596 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
7597 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();
7598 send_along_route(&nodes[1], route, &vec!(&nodes[0])[..], 3000000);
7600 let revoked_txn = get_local_commitment_txn!(nodes[0], chan.2);
7601 // Revoked commitment txn with 4 outputs : to_local, to_remote, 1 outgoing HTLC, 1 incoming HTLC
7602 assert_eq!(revoked_txn[0].output.len(), 4);
7603 assert_eq!(revoked_txn[0].input.len(), 1);
7604 assert_eq!(revoked_txn[0].input[0].previous_output.txid, chan.3.txid());
7605 let revoked_txid = revoked_txn[0].txid();
7607 let mut penalty_sum = 0;
7608 for outp in revoked_txn[0].output.iter() {
7609 if outp.script_pubkey.is_v0_p2wsh() {
7610 penalty_sum += outp.value;
7614 // Connect blocks to change height_timer range to see if we use right soonest_timelock
7615 let header_114 = connect_blocks(&nodes[1], 14);
7617 // Actually revoke tx by claiming a HTLC
7618 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 3_000_000);
7619 let header = BlockHeader { version: 0x20000000, prev_blockhash: header_114, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7620 connect_block(&nodes[1], &Block { header, txdata: vec![revoked_txn[0].clone()] });
7621 check_added_monitors!(nodes[1], 1);
7623 // One or more justice tx should have been broadcast, check it
7627 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7628 assert_eq!(node_txn.len(), 3); // justice tx (broadcasted from ChannelMonitor) + local commitment tx + local HTLC-timeout (broadcasted from ChannelManager)
7629 assert_eq!(node_txn[0].input.len(), 3); // Penalty txn claims to_local, offered_htlc and received_htlc outputs
7630 assert_eq!(node_txn[0].output.len(), 1);
7631 check_spends!(node_txn[0], revoked_txn[0]);
7632 let fee_1 = penalty_sum - node_txn[0].output[0].value;
7633 feerate_1 = fee_1 * 1000 / node_txn[0].get_weight() as u64;
7634 penalty_1 = node_txn[0].txid();
7638 // After exhaustion of height timer, a new bumped justice tx should have been broadcast, check it
7639 connect_blocks(&nodes[1], 15);
7640 let mut penalty_2 = penalty_1;
7641 let mut feerate_2 = 0;
7643 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7644 assert_eq!(node_txn.len(), 1);
7645 if node_txn[0].input[0].previous_output.txid == revoked_txid {
7646 assert_eq!(node_txn[0].input.len(), 3); // Penalty txn claims to_local, offered_htlc and received_htlc outputs
7647 assert_eq!(node_txn[0].output.len(), 1);
7648 check_spends!(node_txn[0], revoked_txn[0]);
7649 penalty_2 = node_txn[0].txid();
7650 // Verify new bumped tx is different from last claiming transaction, we don't want spurrious rebroadcast
7651 assert_ne!(penalty_2, penalty_1);
7652 let fee_2 = penalty_sum - node_txn[0].output[0].value;
7653 feerate_2 = fee_2 * 1000 / node_txn[0].get_weight() as u64;
7654 // Verify 25% bump heuristic
7655 assert!(feerate_2 * 100 >= feerate_1 * 125);
7659 assert_ne!(feerate_2, 0);
7661 // After exhaustion of height timer for a 2nd time, a new bumped justice tx should have been broadcast, check it
7662 connect_blocks(&nodes[1], 1);
7664 let mut feerate_3 = 0;
7666 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7667 assert_eq!(node_txn.len(), 1);
7668 if node_txn[0].input[0].previous_output.txid == revoked_txid {
7669 assert_eq!(node_txn[0].input.len(), 3); // Penalty txn claims to_local, offered_htlc and received_htlc outputs
7670 assert_eq!(node_txn[0].output.len(), 1);
7671 check_spends!(node_txn[0], revoked_txn[0]);
7672 penalty_3 = node_txn[0].txid();
7673 // Verify new bumped tx is different from last claiming transaction, we don't want spurrious rebroadcast
7674 assert_ne!(penalty_3, penalty_2);
7675 let fee_3 = penalty_sum - node_txn[0].output[0].value;
7676 feerate_3 = fee_3 * 1000 / node_txn[0].get_weight() as u64;
7677 // Verify 25% bump heuristic
7678 assert!(feerate_3 * 100 >= feerate_2 * 125);
7682 assert_ne!(feerate_3, 0);
7684 nodes[1].node.get_and_clear_pending_events();
7685 nodes[1].node.get_and_clear_pending_msg_events();
7689 fn test_bump_penalty_txn_on_revoked_htlcs() {
7690 // In case of penalty txn with too low feerates for getting into mempools, RBF-bump them to sure
7691 // we're able to claim outputs on revoked HTLC transactions before timelocks expiration
7693 let mut chanmon_cfgs = create_chanmon_cfgs(2);
7694 chanmon_cfgs[1].keys_manager.disable_revocation_policy_check = true;
7695 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7696 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7697 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7699 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
7700 // Lock HTLC in both directions
7701 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3_000_000).0;
7702 route_payment(&nodes[1], &vec!(&nodes[0])[..], 3_000_000).0;
7704 let revoked_local_txn = get_local_commitment_txn!(nodes[1], chan.2);
7705 assert_eq!(revoked_local_txn[0].input.len(), 1);
7706 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan.3.txid());
7708 // Revoke local commitment tx
7709 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 3_000_000);
7711 let header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7712 // B will generate both revoked HTLC-timeout/HTLC-preimage txn from revoked commitment tx
7713 connect_block(&nodes[1], &Block { header, txdata: vec![revoked_local_txn[0].clone()] });
7714 check_closed_broadcast!(nodes[1], true);
7715 check_added_monitors!(nodes[1], 1);
7717 let revoked_htlc_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7718 assert_eq!(revoked_htlc_txn.len(), 4);
7719 if revoked_htlc_txn[0].input[0].witness.last().unwrap().len() == ACCEPTED_HTLC_SCRIPT_WEIGHT {
7720 assert_eq!(revoked_htlc_txn[0].input.len(), 1);
7721 check_spends!(revoked_htlc_txn[0], revoked_local_txn[0]);
7722 assert_eq!(revoked_htlc_txn[1].input.len(), 1);
7723 assert_eq!(revoked_htlc_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
7724 assert_eq!(revoked_htlc_txn[1].output.len(), 1);
7725 check_spends!(revoked_htlc_txn[1], revoked_local_txn[0]);
7726 } else if revoked_htlc_txn[1].input[0].witness.last().unwrap().len() == ACCEPTED_HTLC_SCRIPT_WEIGHT {
7727 assert_eq!(revoked_htlc_txn[1].input.len(), 1);
7728 check_spends!(revoked_htlc_txn[1], revoked_local_txn[0]);
7729 assert_eq!(revoked_htlc_txn[0].input.len(), 1);
7730 assert_eq!(revoked_htlc_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
7731 assert_eq!(revoked_htlc_txn[0].output.len(), 1);
7732 check_spends!(revoked_htlc_txn[0], revoked_local_txn[0]);
7735 // Broadcast set of revoked txn on A
7736 let hash_128 = connect_blocks(&nodes[0], 40);
7737 let header_11 = BlockHeader { version: 0x20000000, prev_blockhash: hash_128, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7738 connect_block(&nodes[0], &Block { header: header_11, txdata: vec![revoked_local_txn[0].clone()] });
7739 let header_129 = BlockHeader { version: 0x20000000, prev_blockhash: header_11.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7740 connect_block(&nodes[0], &Block { header: header_129, txdata: vec![revoked_htlc_txn[0].clone(), revoked_htlc_txn[1].clone()] });
7741 expect_pending_htlcs_forwardable_ignore!(nodes[0]);
7746 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
7747 assert_eq!(node_txn.len(), 5); // 3 penalty txn on revoked commitment tx + A commitment tx + 1 penalty tnx on revoked HTLC txn
7748 // Verify claim tx are spending revoked HTLC txn
7750 // node_txn 0-2 each spend a separate revoked output from revoked_local_txn[0]
7751 // Note that node_txn[0] and node_txn[1] are bogus - they double spend the revoked_htlc_txn
7752 // which are included in the same block (they are broadcasted because we scan the
7753 // transactions linearly and generate claims as we go, they likely should be removed in the
7755 assert_eq!(node_txn[0].input.len(), 1);
7756 check_spends!(node_txn[0], revoked_local_txn[0]);
7757 assert_eq!(node_txn[1].input.len(), 1);
7758 check_spends!(node_txn[1], revoked_local_txn[0]);
7759 assert_eq!(node_txn[2].input.len(), 1);
7760 check_spends!(node_txn[2], revoked_local_txn[0]);
7762 // Each of the three justice transactions claim a separate (single) output of the three
7763 // available, which we check here:
7764 assert_ne!(node_txn[0].input[0].previous_output, node_txn[1].input[0].previous_output);
7765 assert_ne!(node_txn[0].input[0].previous_output, node_txn[2].input[0].previous_output);
7766 assert_ne!(node_txn[1].input[0].previous_output, node_txn[2].input[0].previous_output);
7768 assert_eq!(node_txn[0].input[0].previous_output, revoked_htlc_txn[0].input[0].previous_output);
7769 assert_eq!(node_txn[1].input[0].previous_output, revoked_htlc_txn[1].input[0].previous_output);
7771 // node_txn[3] is the local commitment tx broadcast just because (and somewhat in case of
7772 // reorgs, though its not clear its ever worth broadcasting conflicting txn like this when
7773 // a remote commitment tx has already been confirmed).
7774 check_spends!(node_txn[3], chan.3);
7776 // node_txn[4] spends the revoked outputs from the revoked_htlc_txn (which only have one
7777 // output, checked above).
7778 assert_eq!(node_txn[4].input.len(), 2);
7779 assert_eq!(node_txn[4].output.len(), 1);
7780 check_spends!(node_txn[4], revoked_htlc_txn[0], revoked_htlc_txn[1]);
7782 first = node_txn[4].txid();
7783 // Store both feerates for later comparison
7784 let fee_1 = revoked_htlc_txn[0].output[0].value + revoked_htlc_txn[1].output[0].value - node_txn[4].output[0].value;
7785 feerate_1 = fee_1 * 1000 / node_txn[4].get_weight() as u64;
7786 penalty_txn = vec![node_txn[2].clone()];
7790 // Connect one more block to see if bumped penalty are issued for HTLC txn
7791 let header_130 = BlockHeader { version: 0x20000000, prev_blockhash: header_129.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7792 connect_block(&nodes[0], &Block { header: header_130, txdata: penalty_txn });
7793 let header_131 = BlockHeader { version: 0x20000000, prev_blockhash: header_130.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7794 connect_block(&nodes[0], &Block { header: header_131, txdata: Vec::new() });
7796 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
7797 assert_eq!(node_txn.len(), 2); // 2 bumped penalty txn on revoked commitment tx
7799 check_spends!(node_txn[0], revoked_local_txn[0]);
7800 check_spends!(node_txn[1], revoked_local_txn[0]);
7801 // Note that these are both bogus - they spend outputs already claimed in block 129:
7802 if node_txn[0].input[0].previous_output == revoked_htlc_txn[0].input[0].previous_output {
7803 assert_eq!(node_txn[1].input[0].previous_output, revoked_htlc_txn[1].input[0].previous_output);
7805 assert_eq!(node_txn[0].input[0].previous_output, revoked_htlc_txn[1].input[0].previous_output);
7806 assert_eq!(node_txn[1].input[0].previous_output, revoked_htlc_txn[0].input[0].previous_output);
7812 // Few more blocks to confirm penalty txn
7813 connect_blocks(&nodes[0], 4);
7814 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
7815 let header_144 = connect_blocks(&nodes[0], 9);
7817 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
7818 assert_eq!(node_txn.len(), 1);
7820 assert_eq!(node_txn[0].input.len(), 2);
7821 check_spends!(node_txn[0], revoked_htlc_txn[0], revoked_htlc_txn[1]);
7822 // Verify bumped tx is different and 25% bump heuristic
7823 assert_ne!(first, node_txn[0].txid());
7824 let fee_2 = revoked_htlc_txn[0].output[0].value + revoked_htlc_txn[1].output[0].value - node_txn[0].output[0].value;
7825 let feerate_2 = fee_2 * 1000 / node_txn[0].get_weight() as u64;
7826 assert!(feerate_2 * 100 > feerate_1 * 125);
7827 let txn = vec![node_txn[0].clone()];
7831 // Broadcast claim txn and confirm blocks to avoid further bumps on this outputs
7832 let header_145 = BlockHeader { version: 0x20000000, prev_blockhash: header_144, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7833 connect_block(&nodes[0], &Block { header: header_145, txdata: node_txn });
7834 connect_blocks(&nodes[0], 20);
7836 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
7837 // We verify than no new transaction has been broadcast because previously
7838 // we were buggy on this exact behavior by not tracking for monitoring remote HTLC outputs (see #411)
7839 // which means we wouldn't see a spend of them by a justice tx and bumped justice tx
7840 // were generated forever instead of safe cleaning after confirmation and ANTI_REORG_SAFE_DELAY blocks.
7841 // Enforce spending of revoked htlc output by claiming transaction remove request as expected and dry
7842 // up bumped justice generation.
7843 assert_eq!(node_txn.len(), 0);
7846 check_closed_broadcast!(nodes[0], true);
7847 check_added_monitors!(nodes[0], 1);
7851 fn test_bump_penalty_txn_on_remote_commitment() {
7852 // In case of claim txn with too low feerates for getting into mempools, RBF-bump them to be sure
7853 // we're able to claim outputs on remote commitment transaction before timelocks expiration
7856 // Provide preimage for one
7857 // Check aggregation
7859 let chanmon_cfgs = create_chanmon_cfgs(2);
7860 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7861 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7862 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7864 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
7865 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
7866 route_payment(&nodes[1], &vec!(&nodes[0])[..], 3000000).0;
7868 // Remote commitment txn with 4 outputs : to_local, to_remote, 1 outgoing HTLC, 1 incoming HTLC
7869 let remote_txn = get_local_commitment_txn!(nodes[0], chan.2);
7870 assert_eq!(remote_txn[0].output.len(), 4);
7871 assert_eq!(remote_txn[0].input.len(), 1);
7872 assert_eq!(remote_txn[0].input[0].previous_output.txid, chan.3.txid());
7874 // Claim a HTLC without revocation (provide B monitor with preimage)
7875 nodes[1].node.claim_funds(payment_preimage, &None, 3_000_000);
7876 mine_transaction(&nodes[1], &remote_txn[0]);
7877 check_added_monitors!(nodes[1], 2);
7879 // One or more claim tx should have been broadcast, check it
7882 let feerate_timeout;
7883 let feerate_preimage;
7885 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7886 assert_eq!(node_txn.len(), 5); // 2 * claim tx (broadcasted from ChannelMonitor) + local commitment tx + local HTLC-timeout + local HTLC-success (broadcasted from ChannelManager)
7887 assert_eq!(node_txn[0].input.len(), 1);
7888 assert_eq!(node_txn[1].input.len(), 1);
7889 check_spends!(node_txn[0], remote_txn[0]);
7890 check_spends!(node_txn[1], remote_txn[0]);
7891 check_spends!(node_txn[2], chan.3);
7892 check_spends!(node_txn[3], node_txn[2]);
7893 check_spends!(node_txn[4], node_txn[2]);
7894 if node_txn[0].input[0].witness.last().unwrap().len() == ACCEPTED_HTLC_SCRIPT_WEIGHT {
7895 timeout = node_txn[0].txid();
7896 let index = node_txn[0].input[0].previous_output.vout;
7897 let fee = remote_txn[0].output[index as usize].value - node_txn[0].output[0].value;
7898 feerate_timeout = fee * 1000 / node_txn[0].get_weight() as u64;
7900 preimage = node_txn[1].txid();
7901 let index = node_txn[1].input[0].previous_output.vout;
7902 let fee = remote_txn[0].output[index as usize].value - node_txn[1].output[0].value;
7903 feerate_preimage = fee * 1000 / node_txn[1].get_weight() as u64;
7905 timeout = node_txn[1].txid();
7906 let index = node_txn[1].input[0].previous_output.vout;
7907 let fee = remote_txn[0].output[index as usize].value - node_txn[1].output[0].value;
7908 feerate_timeout = fee * 1000 / node_txn[1].get_weight() as u64;
7910 preimage = node_txn[0].txid();
7911 let index = node_txn[0].input[0].previous_output.vout;
7912 let fee = remote_txn[0].output[index as usize].value - node_txn[0].output[0].value;
7913 feerate_preimage = fee * 1000 / node_txn[0].get_weight() as u64;
7917 assert_ne!(feerate_timeout, 0);
7918 assert_ne!(feerate_preimage, 0);
7920 // After exhaustion of height timer, new bumped claim txn should have been broadcast, check it
7921 connect_blocks(&nodes[1], 15);
7923 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7924 assert_eq!(node_txn.len(), 2);
7925 assert_eq!(node_txn[0].input.len(), 1);
7926 assert_eq!(node_txn[1].input.len(), 1);
7927 check_spends!(node_txn[0], remote_txn[0]);
7928 check_spends!(node_txn[1], remote_txn[0]);
7929 if node_txn[0].input[0].witness.last().unwrap().len() == ACCEPTED_HTLC_SCRIPT_WEIGHT {
7930 let index = node_txn[0].input[0].previous_output.vout;
7931 let fee = remote_txn[0].output[index as usize].value - node_txn[0].output[0].value;
7932 let new_feerate = fee * 1000 / node_txn[0].get_weight() as u64;
7933 assert!(new_feerate * 100 > feerate_timeout * 125);
7934 assert_ne!(timeout, node_txn[0].txid());
7936 let index = node_txn[1].input[0].previous_output.vout;
7937 let fee = remote_txn[0].output[index as usize].value - node_txn[1].output[0].value;
7938 let new_feerate = fee * 1000 / node_txn[1].get_weight() as u64;
7939 assert!(new_feerate * 100 > feerate_preimage * 125);
7940 assert_ne!(preimage, node_txn[1].txid());
7942 let index = node_txn[1].input[0].previous_output.vout;
7943 let fee = remote_txn[0].output[index as usize].value - node_txn[1].output[0].value;
7944 let new_feerate = fee * 1000 / node_txn[1].get_weight() as u64;
7945 assert!(new_feerate * 100 > feerate_timeout * 125);
7946 assert_ne!(timeout, node_txn[1].txid());
7948 let index = node_txn[0].input[0].previous_output.vout;
7949 let fee = remote_txn[0].output[index as usize].value - node_txn[0].output[0].value;
7950 let new_feerate = fee * 1000 / node_txn[0].get_weight() as u64;
7951 assert!(new_feerate * 100 > feerate_preimage * 125);
7952 assert_ne!(preimage, node_txn[0].txid());
7957 nodes[1].node.get_and_clear_pending_events();
7958 nodes[1].node.get_and_clear_pending_msg_events();
7962 fn test_counterparty_raa_skip_no_crash() {
7963 // Previously, if our counterparty sent two RAAs in a row without us having provided a
7964 // commitment transaction, we would have happily carried on and provided them the next
7965 // commitment transaction based on one RAA forward. This would probably eventually have led to
7966 // channel closure, but it would not have resulted in funds loss. Still, our
7967 // EnforcingSigner would have paniced as it doesn't like jumps into the future. Here, we
7968 // check simply that the channel is closed in response to such an RAA, but don't check whether
7969 // we decide to punish our counterparty for revoking their funds (as we don't currently
7971 let chanmon_cfgs = create_chanmon_cfgs(2);
7972 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7973 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7974 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7975 let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
7977 let mut guard = nodes[0].node.channel_state.lock().unwrap();
7978 let keys = &guard.by_id.get_mut(&channel_id).unwrap().get_signer();
7979 const INITIAL_COMMITMENT_NUMBER: u64 = (1 << 48) - 1;
7980 let per_commitment_secret = keys.release_commitment_secret(INITIAL_COMMITMENT_NUMBER);
7981 // Must revoke without gaps
7982 keys.release_commitment_secret(INITIAL_COMMITMENT_NUMBER - 1);
7983 let next_per_commitment_point = PublicKey::from_secret_key(&Secp256k1::new(),
7984 &SecretKey::from_slice(&keys.release_commitment_secret(INITIAL_COMMITMENT_NUMBER - 2)).unwrap());
7986 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(),
7987 &msgs::RevokeAndACK { channel_id, per_commitment_secret, next_per_commitment_point });
7988 assert_eq!(check_closed_broadcast!(nodes[1], true).unwrap().data, "Received an unexpected revoke_and_ack");
7989 check_added_monitors!(nodes[1], 1);
7993 fn test_bump_txn_sanitize_tracking_maps() {
7994 // Sanitizing pendning_claim_request and claimable_outpoints used to be buggy,
7995 // verify we clean then right after expiration of ANTI_REORG_DELAY.
7997 let chanmon_cfgs = create_chanmon_cfgs(2);
7998 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7999 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8000 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8002 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
8003 // Lock HTLC in both directions
8004 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9_000_000).0;
8005 route_payment(&nodes[1], &vec!(&nodes[0])[..], 9_000_000).0;
8007 let revoked_local_txn = get_local_commitment_txn!(nodes[1], chan.2);
8008 assert_eq!(revoked_local_txn[0].input.len(), 1);
8009 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan.3.txid());
8011 // Revoke local commitment tx
8012 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 9_000_000);
8014 // Broadcast set of revoked txn on A
8015 connect_blocks(&nodes[0], 52 - CHAN_CONFIRM_DEPTH);
8016 expect_pending_htlcs_forwardable_ignore!(nodes[0]);
8017 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 0);
8019 mine_transaction(&nodes[0], &revoked_local_txn[0]);
8020 check_closed_broadcast!(nodes[0], true);
8021 check_added_monitors!(nodes[0], 1);
8023 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8024 assert_eq!(node_txn.len(), 4); //ChannelMonitor: justice txn * 3, ChannelManager: local commitment tx
8025 check_spends!(node_txn[0], revoked_local_txn[0]);
8026 check_spends!(node_txn[1], revoked_local_txn[0]);
8027 check_spends!(node_txn[2], revoked_local_txn[0]);
8028 let penalty_txn = vec![node_txn[0].clone(), node_txn[1].clone(), node_txn[2].clone()];
8032 let header_130 = BlockHeader { version: 0x20000000, prev_blockhash: nodes[0].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8033 connect_block(&nodes[0], &Block { header: header_130, txdata: penalty_txn });
8034 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
8036 let monitors = nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap();
8037 if let Some(monitor) = monitors.get(&OutPoint { txid: chan.3.txid(), index: 0 }) {
8038 assert!(monitor.inner.lock().unwrap().onchain_tx_handler.pending_claim_requests.is_empty());
8039 assert!(monitor.inner.lock().unwrap().onchain_tx_handler.claimable_outpoints.is_empty());
8045 fn test_override_channel_config() {
8046 let chanmon_cfgs = create_chanmon_cfgs(2);
8047 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8048 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8049 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8051 // Node0 initiates a channel to node1 using the override config.
8052 let mut override_config = UserConfig::default();
8053 override_config.own_channel_config.our_to_self_delay = 200;
8055 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 16_000_000, 12_000_000, 42, Some(override_config)).unwrap();
8057 // Assert the channel created by node0 is using the override config.
8058 let res = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
8059 assert_eq!(res.channel_flags, 0);
8060 assert_eq!(res.to_self_delay, 200);
8064 fn test_override_0msat_htlc_minimum() {
8065 let mut zero_config = UserConfig::default();
8066 zero_config.own_channel_config.our_htlc_minimum_msat = 0;
8067 let chanmon_cfgs = create_chanmon_cfgs(2);
8068 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8069 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, Some(zero_config.clone())]);
8070 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8072 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 16_000_000, 12_000_000, 42, Some(zero_config)).unwrap();
8073 let res = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
8074 assert_eq!(res.htlc_minimum_msat, 1);
8076 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &res);
8077 let res = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
8078 assert_eq!(res.htlc_minimum_msat, 1);
8082 fn test_simple_mpp() {
8083 // Simple test of sending a multi-path payment.
8084 let chanmon_cfgs = create_chanmon_cfgs(4);
8085 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
8086 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
8087 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
8089 let chan_1_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
8090 let chan_2_id = create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
8091 let chan_3_id = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
8092 let chan_4_id = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
8093 let logger = test_utils::TestLogger::new();
8095 let (payment_preimage, payment_hash, payment_secret) = get_payment_preimage_hash!(&nodes[3]);
8096 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
8097 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();
8098 let path = route.paths[0].clone();
8099 route.paths.push(path);
8100 route.paths[0][0].pubkey = nodes[1].node.get_our_node_id();
8101 route.paths[0][0].short_channel_id = chan_1_id;
8102 route.paths[0][1].short_channel_id = chan_3_id;
8103 route.paths[1][0].pubkey = nodes[2].node.get_our_node_id();
8104 route.paths[1][0].short_channel_id = chan_2_id;
8105 route.paths[1][1].short_channel_id = chan_4_id;
8106 send_along_route_with_secret(&nodes[0], route, &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], 200_000, payment_hash, payment_secret);
8107 claim_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], false, payment_preimage, 200_000);
8111 fn test_update_err_monitor_lockdown() {
8112 // Our monitor will lock update of local commitment transaction if a broadcastion condition
8113 // has been fulfilled (either force-close from Channel or block height requiring a HTLC-
8114 // timeout). Trying to update monitor after lockdown should return a ChannelMonitorUpdateErr.
8116 // This scenario may happen in a watchtower setup, where watchtower process a block height
8117 // triggering a timeout while a slow-block-processing ChannelManager receives a local signed
8118 // commitment at same time.
8120 let chanmon_cfgs = create_chanmon_cfgs(2);
8121 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8122 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8123 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8125 // Create some initial channel
8126 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
8127 let outpoint = OutPoint { txid: chan_1.3.txid(), index: 0 };
8129 // Rebalance the network to generate htlc in the two directions
8130 send_payment(&nodes[0], &vec!(&nodes[1])[..], 10_000_000, 10_000_000);
8132 // Route a HTLC from node 0 to node 1 (but don't settle)
8133 let preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9_000_000).0;
8135 // Copy ChainMonitor to simulate a watchtower and update block height of node 0 until its ChannelMonitor timeout HTLC onchain
8136 let chain_source = test_utils::TestChainSource::new(Network::Testnet);
8137 let logger = test_utils::TestLogger::with_id(format!("node {}", 0));
8138 let persister = test_utils::TestPersister::new();
8140 let monitors = nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap();
8141 let monitor = monitors.get(&outpoint).unwrap();
8142 let mut w = test_utils::TestVecWriter(Vec::new());
8143 monitor.write(&mut w).unwrap();
8144 let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
8145 &mut ::std::io::Cursor::new(&w.0), &test_utils::OnlyReadsKeysInterface {}).unwrap().1;
8146 assert!(new_monitor == *monitor);
8147 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);
8148 assert!(watchtower.watch_channel(outpoint, new_monitor).is_ok());
8151 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8152 watchtower.chain_monitor.block_connected(&Block { header, txdata: vec![] }, 200);
8154 // Try to update ChannelMonitor
8155 assert!(nodes[1].node.claim_funds(preimage, &None, 9_000_000));
8156 check_added_monitors!(nodes[1], 1);
8157 let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
8158 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
8159 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
8160 if let Some(ref mut channel) = nodes[0].node.channel_state.lock().unwrap().by_id.get_mut(&chan_1.2) {
8161 if let Ok((_, _, _, update)) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].fee_estimator, &node_cfgs[0].logger) {
8162 if let Err(_) = watchtower.chain_monitor.update_channel(outpoint, update.clone()) {} else { assert!(false); }
8163 if let Ok(_) = nodes[0].chain_monitor.update_channel(outpoint, update) {} else { assert!(false); }
8164 } else { assert!(false); }
8165 } else { assert!(false); };
8166 // Our local monitor is in-sync and hasn't processed yet timeout
8167 check_added_monitors!(nodes[0], 1);
8168 let events = nodes[0].node.get_and_clear_pending_events();
8169 assert_eq!(events.len(), 1);
8173 fn test_concurrent_monitor_claim() {
8174 // Watchtower A receives block, broadcasts state N, then channel receives new state N+1,
8175 // sending it to both watchtowers, Bob accepts N+1, then receives block and broadcasts
8176 // the latest state N+1, Alice rejects state N+1, but Bob has already broadcast it,
8177 // state N+1 confirms. Alice claims output from state N+1.
8179 let chanmon_cfgs = create_chanmon_cfgs(2);
8180 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8181 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8182 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8184 // Create some initial channel
8185 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
8186 let outpoint = OutPoint { txid: chan_1.3.txid(), index: 0 };
8188 // Rebalance the network to generate htlc in the two directions
8189 send_payment(&nodes[0], &vec!(&nodes[1])[..], 10_000_000, 10_000_000);
8191 // Route a HTLC from node 0 to node 1 (but don't settle)
8192 route_payment(&nodes[0], &vec!(&nodes[1])[..], 9_000_000).0;
8194 // Copy ChainMonitor to simulate watchtower Alice and update block height her ChannelMonitor timeout HTLC onchain
8195 let chain_source = test_utils::TestChainSource::new(Network::Testnet);
8196 let logger = test_utils::TestLogger::with_id(format!("node {}", "Alice"));
8197 let persister = test_utils::TestPersister::new();
8198 let watchtower_alice = {
8199 let monitors = nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap();
8200 let monitor = monitors.get(&outpoint).unwrap();
8201 let mut w = test_utils::TestVecWriter(Vec::new());
8202 monitor.write(&mut w).unwrap();
8203 let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
8204 &mut ::std::io::Cursor::new(&w.0), &test_utils::OnlyReadsKeysInterface {}).unwrap().1;
8205 assert!(new_monitor == *monitor);
8206 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);
8207 assert!(watchtower.watch_channel(outpoint, new_monitor).is_ok());
8210 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8211 watchtower_alice.chain_monitor.block_connected(&Block { header, txdata: vec![] }, CHAN_CONFIRM_DEPTH + 1 + TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS);
8213 // Watchtower Alice should have broadcast a commitment/HTLC-timeout
8215 let mut txn = chanmon_cfgs[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8216 assert_eq!(txn.len(), 2);
8220 // Copy ChainMonitor to simulate watchtower Bob and make it receive a commitment update first.
8221 let chain_source = test_utils::TestChainSource::new(Network::Testnet);
8222 let logger = test_utils::TestLogger::with_id(format!("node {}", "Bob"));
8223 let persister = test_utils::TestPersister::new();
8224 let watchtower_bob = {
8225 let monitors = nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap();
8226 let monitor = monitors.get(&outpoint).unwrap();
8227 let mut w = test_utils::TestVecWriter(Vec::new());
8228 monitor.write(&mut w).unwrap();
8229 let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
8230 &mut ::std::io::Cursor::new(&w.0), &test_utils::OnlyReadsKeysInterface {}).unwrap().1;
8231 assert!(new_monitor == *monitor);
8232 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);
8233 assert!(watchtower.watch_channel(outpoint, new_monitor).is_ok());
8236 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8237 watchtower_bob.chain_monitor.block_connected(&Block { header, txdata: vec![] }, CHAN_CONFIRM_DEPTH + TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS);
8239 // Route another payment to generate another update with still previous HTLC pending
8240 let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[0]);
8242 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
8243 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();
8244 nodes[1].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
8246 check_added_monitors!(nodes[1], 1);
8248 let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
8249 assert_eq!(updates.update_add_htlcs.len(), 1);
8250 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &updates.update_add_htlcs[0]);
8251 if let Some(ref mut channel) = nodes[0].node.channel_state.lock().unwrap().by_id.get_mut(&chan_1.2) {
8252 if let Ok((_, _, _, update)) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].fee_estimator, &node_cfgs[0].logger) {
8253 // Watchtower Alice should already have seen the block and reject the update
8254 if let Err(_) = watchtower_alice.chain_monitor.update_channel(outpoint, update.clone()) {} else { assert!(false); }
8255 if let Ok(_) = watchtower_bob.chain_monitor.update_channel(outpoint, update.clone()) {} else { assert!(false); }
8256 if let Ok(_) = nodes[0].chain_monitor.update_channel(outpoint, update) {} else { assert!(false); }
8257 } else { assert!(false); }
8258 } else { assert!(false); };
8259 // Our local monitor is in-sync and hasn't processed yet timeout
8260 check_added_monitors!(nodes[0], 1);
8262 //// Provide one more block to watchtower Bob, expect broadcast of commitment and HTLC-Timeout
8263 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8264 watchtower_bob.chain_monitor.block_connected(&Block { header, txdata: vec![] }, CHAN_CONFIRM_DEPTH + 1 + TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS);
8266 // Watchtower Bob should have broadcast a commitment/HTLC-timeout
8269 let mut txn = chanmon_cfgs[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8270 assert_eq!(txn.len(), 2);
8271 bob_state_y = txn[0].clone();
8275 // We confirm Bob's state Y on Alice, she should broadcast a HTLC-timeout
8276 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8277 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);
8279 let htlc_txn = chanmon_cfgs[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8280 // We broadcast twice the transaction, once due to the HTLC-timeout, once due
8281 // the onchain detection of the HTLC output
8282 assert_eq!(htlc_txn.len(), 2);
8283 check_spends!(htlc_txn[0], bob_state_y);
8284 check_spends!(htlc_txn[1], bob_state_y);
8289 fn test_pre_lockin_no_chan_closed_update() {
8290 // Test that if a peer closes a channel in response to a funding_created message we don't
8291 // generate a channel update (as the channel cannot appear on chain without a funding_signed
8294 // Doing so would imply a channel monitor update before the initial channel monitor
8295 // registration, violating our API guarantees.
8297 // Previously, full_stack_target managed to hit this case by opening then closing a channel,
8298 // then opening a second channel with the same funding output as the first (which is not
8299 // rejected because the first channel does not exist in the ChannelManager) and closing it
8300 // before receiving funding_signed.
8301 let chanmon_cfgs = create_chanmon_cfgs(2);
8302 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8303 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8304 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8306 // Create an initial channel
8307 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
8308 let mut open_chan_msg = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
8309 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_chan_msg);
8310 let accept_chan_msg = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
8311 nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &accept_chan_msg);
8313 // Move the first channel through the funding flow...
8314 let (temporary_channel_id, tx, _) = create_funding_transaction(&nodes[0], 100000, 42);
8316 nodes[0].node.funding_transaction_generated(&temporary_channel_id, tx.clone()).unwrap();
8317 check_added_monitors!(nodes[0], 0);
8319 let funding_created_msg = get_event_msg!(nodes[0], MessageSendEvent::SendFundingCreated, nodes[1].node.get_our_node_id());
8320 let channel_id = ::chain::transaction::OutPoint { txid: funding_created_msg.funding_txid, index: funding_created_msg.funding_output_index }.to_channel_id();
8321 nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msgs::ErrorMessage { channel_id, data: "Hi".to_owned() });
8322 assert!(nodes[0].chain_monitor.added_monitors.lock().unwrap().is_empty());
8326 fn test_htlc_no_detection() {
8327 // This test is a mutation to underscore the detection logic bug we had
8328 // before #653. HTLC value routed is above the remaining balance, thus
8329 // inverting HTLC and `to_remote` output. HTLC will come second and
8330 // it wouldn't be seen by pre-#653 detection as we were enumerate()'ing
8331 // on a watched outputs vector (Vec<TxOut>) thus implicitly relying on
8332 // outputs order detection for correct spending children filtring.
8334 let chanmon_cfgs = create_chanmon_cfgs(2);
8335 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8336 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8337 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8339 // Create some initial channels
8340 let chan_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001, InitFeatures::known(), InitFeatures::known());
8342 send_payment(&nodes[0], &vec!(&nodes[1])[..], 1_000_000, 1_000_000);
8343 let (_, our_payment_hash, _) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 2_000_000);
8344 let local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
8345 assert_eq!(local_txn[0].input.len(), 1);
8346 assert_eq!(local_txn[0].output.len(), 3);
8347 check_spends!(local_txn[0], chan_1.3);
8349 // Timeout HTLC on A's chain and so it can generate a HTLC-Timeout tx
8350 let header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[0].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8351 connect_block(&nodes[0], &Block { header, txdata: vec![local_txn[0].clone()] });
8352 // We deliberately connect the local tx twice as this should provoke a failure calling
8353 // this test before #653 fix.
8354 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);
8355 check_closed_broadcast!(nodes[0], true);
8356 check_added_monitors!(nodes[0], 1);
8358 let htlc_timeout = {
8359 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8360 assert_eq!(node_txn[0].input.len(), 1);
8361 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
8362 check_spends!(node_txn[0], local_txn[0]);
8366 let header_201 = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8367 connect_block(&nodes[0], &Block { header: header_201, txdata: vec![htlc_timeout.clone()] });
8368 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
8369 expect_payment_failed!(nodes[0], our_payment_hash, true);
8372 fn do_test_onchain_htlc_settlement_after_close(broadcast_alice: bool, go_onchain_before_fulfill: bool) {
8373 // If we route an HTLC, then learn the HTLC's preimage after the upstream channel has been
8374 // force-closed, we must claim that HTLC on-chain. (Given an HTLC forwarded from Alice --> Bob -->
8375 // Carol, Alice would be the upstream node, and Carol the downstream.)
8377 // Steps of the test:
8378 // 1) Alice sends a HTLC to Carol through Bob.
8379 // 2) Carol doesn't settle the HTLC.
8380 // 3) If broadcast_alice is true, Alice force-closes her channel with Bob. Else Bob force closes.
8381 // Steps 4 and 5 may be reordered depending on go_onchain_before_fulfill.
8382 // 4) Bob sees the Alice's commitment on his chain or vice versa. An offered output is present
8383 // but can't be claimed as Bob doesn't have yet knowledge of the preimage.
8384 // 5) Carol release the preimage to Bob off-chain.
8385 // 6) Bob claims the offered output on the broadcasted commitment.
8386 let chanmon_cfgs = create_chanmon_cfgs(3);
8387 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
8388 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
8389 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
8391 // Create some initial channels
8392 let chan_ab = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001, InitFeatures::known(), InitFeatures::known());
8393 create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 10001, InitFeatures::known(), InitFeatures::known());
8395 // Steps (1) and (2):
8396 // Send an HTLC Alice --> Bob --> Carol, but Carol doesn't settle the HTLC back.
8397 let (payment_preimage, _payment_hash, _payment_secret) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3_000_000);
8399 // Check that Alice's commitment transaction now contains an output for this HTLC.
8400 let alice_txn = get_local_commitment_txn!(nodes[0], chan_ab.2);
8401 check_spends!(alice_txn[0], chan_ab.3);
8402 assert_eq!(alice_txn[0].output.len(), 2);
8403 check_spends!(alice_txn[1], alice_txn[0]); // 2nd transaction is a non-final HTLC-timeout
8404 assert_eq!(alice_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
8405 assert_eq!(alice_txn.len(), 2);
8407 // Steps (3) and (4):
8408 // If `go_onchain_before_fufill`, broadcast the relevant commitment transaction and check that Bob
8409 // responds by (1) broadcasting a channel update and (2) adding a new ChannelMonitor.
8410 let mut force_closing_node = 0; // Alice force-closes
8411 if !broadcast_alice { force_closing_node = 1; } // Bob force-closes
8412 nodes[force_closing_node].node.force_close_channel(&chan_ab.2).unwrap();
8413 check_closed_broadcast!(nodes[force_closing_node], true);
8414 check_added_monitors!(nodes[force_closing_node], 1);
8415 if go_onchain_before_fulfill {
8416 let txn_to_broadcast = match broadcast_alice {
8417 true => alice_txn.clone(),
8418 false => get_local_commitment_txn!(nodes[1], chan_ab.2)
8420 let header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
8421 connect_block(&nodes[1], &Block { header, txdata: vec![txn_to_broadcast[0].clone()]});
8422 let mut bob_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
8423 if broadcast_alice {
8424 check_closed_broadcast!(nodes[1], true);
8425 check_added_monitors!(nodes[1], 1);
8427 assert_eq!(bob_txn.len(), 1);
8428 check_spends!(bob_txn[0], chan_ab.3);
8432 // Carol then claims the funds and sends an update_fulfill message to Bob, and they go through the
8433 // process of removing the HTLC from their commitment transactions.
8434 assert!(nodes[2].node.claim_funds(payment_preimage, &None, 3_000_000));
8435 check_added_monitors!(nodes[2], 1);
8436 let carol_updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
8437 assert!(carol_updates.update_add_htlcs.is_empty());
8438 assert!(carol_updates.update_fail_htlcs.is_empty());
8439 assert!(carol_updates.update_fail_malformed_htlcs.is_empty());
8440 assert!(carol_updates.update_fee.is_none());
8441 assert_eq!(carol_updates.update_fulfill_htlcs.len(), 1);
8443 nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &carol_updates.update_fulfill_htlcs[0]);
8444 // If Alice broadcasted but Bob doesn't know yet, here he prepares to tell her about the preimage.
8445 if !go_onchain_before_fulfill && broadcast_alice {
8446 let events = nodes[1].node.get_and_clear_pending_msg_events();
8447 assert_eq!(events.len(), 1);
8449 MessageSendEvent::UpdateHTLCs { ref node_id, .. } => {
8450 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
8452 _ => panic!("Unexpected event"),
8455 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &carol_updates.commitment_signed);
8456 // One monitor update for the preimage to update the Bob<->Alice channel, one monitor update
8457 // Carol<->Bob's updated commitment transaction info.
8458 check_added_monitors!(nodes[1], 2);
8460 let events = nodes[1].node.get_and_clear_pending_msg_events();
8461 assert_eq!(events.len(), 2);
8462 let bob_revocation = match events[0] {
8463 MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
8464 assert_eq!(*node_id, nodes[2].node.get_our_node_id());
8467 _ => panic!("Unexpected event"),
8469 let bob_updates = match events[1] {
8470 MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => {
8471 assert_eq!(*node_id, nodes[2].node.get_our_node_id());
8474 _ => panic!("Unexpected event"),
8477 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bob_revocation);
8478 check_added_monitors!(nodes[2], 1);
8479 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bob_updates.commitment_signed);
8480 check_added_monitors!(nodes[2], 1);
8482 let events = nodes[2].node.get_and_clear_pending_msg_events();
8483 assert_eq!(events.len(), 1);
8484 let carol_revocation = match events[0] {
8485 MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
8486 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
8489 _ => panic!("Unexpected event"),
8491 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &carol_revocation);
8492 check_added_monitors!(nodes[1], 1);
8494 // If this test requires the force-closed channel to not be on-chain until after the fulfill,
8495 // here's where we put said channel's commitment tx on-chain.
8496 let mut txn_to_broadcast = alice_txn.clone();
8497 if !broadcast_alice { txn_to_broadcast = get_local_commitment_txn!(nodes[1], chan_ab.2); }
8498 if !go_onchain_before_fulfill {
8499 let header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
8500 connect_block(&nodes[1], &Block { header, txdata: vec![txn_to_broadcast[0].clone()]});
8501 // If Bob was the one to force-close, he will have already passed these checks earlier.
8502 if broadcast_alice {
8503 check_closed_broadcast!(nodes[1], true);
8504 check_added_monitors!(nodes[1], 1);
8506 let mut bob_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
8507 if broadcast_alice {
8508 // In `connect_block()`, the ChainMonitor and ChannelManager are separately notified about a
8509 // new block being connected. The ChannelManager being notified triggers a monitor update,
8510 // which triggers broadcasting our commitment tx and an HTLC-claiming tx. The ChainMonitor
8511 // being notified triggers the HTLC-claiming tx redundantly, resulting in 3 total txs being
8513 assert_eq!(bob_txn.len(), 3);
8514 check_spends!(bob_txn[1], chan_ab.3);
8516 assert_eq!(bob_txn.len(), 2);
8517 check_spends!(bob_txn[0], chan_ab.3);
8522 // Finally, check that Bob broadcasted a preimage-claiming transaction for the HTLC output on the
8523 // broadcasted commitment transaction.
8525 let bob_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
8526 if go_onchain_before_fulfill {
8527 // Bob should now have an extra broadcasted tx, for the preimage-claiming transaction.
8528 assert_eq!(bob_txn.len(), 2);
8530 let script_weight = match broadcast_alice {
8531 true => OFFERED_HTLC_SCRIPT_WEIGHT,
8532 false => ACCEPTED_HTLC_SCRIPT_WEIGHT
8534 // If Alice force-closed and Bob didn't receive her commitment transaction until after he
8535 // received Carol's fulfill, he broadcasts the HTLC-output-claiming transaction first. Else if
8536 // Bob force closed or if he found out about Alice's commitment tx before receiving Carol's
8537 // fulfill, then he broadcasts the HTLC-output-claiming transaction second.
8538 if broadcast_alice && !go_onchain_before_fulfill {
8539 check_spends!(bob_txn[0], txn_to_broadcast[0]);
8540 assert_eq!(bob_txn[0].input[0].witness.last().unwrap().len(), script_weight);
8542 check_spends!(bob_txn[1], txn_to_broadcast[0]);
8543 assert_eq!(bob_txn[1].input[0].witness.last().unwrap().len(), script_weight);
8549 fn test_onchain_htlc_settlement_after_close() {
8550 do_test_onchain_htlc_settlement_after_close(true, true);
8551 do_test_onchain_htlc_settlement_after_close(false, true); // Technically redundant, but may as well
8552 do_test_onchain_htlc_settlement_after_close(true, false);
8553 do_test_onchain_htlc_settlement_after_close(false, false);
8557 fn test_duplicate_chan_id() {
8558 // Test that if a given peer tries to open a channel with the same channel_id as one that is
8559 // already open we reject it and keep the old channel.
8561 // Previously, full_stack_target managed to figure out that if you tried to open two channels
8562 // with the same funding output (ie post-funding channel_id), we'd create a monitor update for
8563 // the existing channel when we detect the duplicate new channel, screwing up our monitor
8564 // updating logic for the existing channel.
8565 let chanmon_cfgs = create_chanmon_cfgs(2);
8566 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8567 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8568 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8570 // Create an initial channel
8571 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
8572 let mut open_chan_msg = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
8573 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_chan_msg);
8574 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()));
8576 // Try to create a second channel with the same temporary_channel_id as the first and check
8577 // that it is rejected.
8578 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_chan_msg);
8580 let events = nodes[1].node.get_and_clear_pending_msg_events();
8581 assert_eq!(events.len(), 1);
8583 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
8584 // Technically, at this point, nodes[1] would be justified in thinking both the
8585 // first (valid) and second (invalid) channels are closed, given they both have
8586 // the same non-temporary channel_id. However, currently we do not, so we just
8587 // move forward with it.
8588 assert_eq!(msg.channel_id, open_chan_msg.temporary_channel_id);
8589 assert_eq!(node_id, nodes[0].node.get_our_node_id());
8591 _ => panic!("Unexpected event"),
8595 // Move the first channel through the funding flow...
8596 let (temporary_channel_id, tx, funding_output) = create_funding_transaction(&nodes[0], 100000, 42);
8598 nodes[0].node.funding_transaction_generated(&temporary_channel_id, tx.clone()).unwrap();
8599 check_added_monitors!(nodes[0], 0);
8601 let mut funding_created_msg = get_event_msg!(nodes[0], MessageSendEvent::SendFundingCreated, nodes[1].node.get_our_node_id());
8602 nodes[1].node.handle_funding_created(&nodes[0].node.get_our_node_id(), &funding_created_msg);
8604 let mut added_monitors = nodes[1].chain_monitor.added_monitors.lock().unwrap();
8605 assert_eq!(added_monitors.len(), 1);
8606 assert_eq!(added_monitors[0].0, funding_output);
8607 added_monitors.clear();
8609 let funding_signed_msg = get_event_msg!(nodes[1], MessageSendEvent::SendFundingSigned, nodes[0].node.get_our_node_id());
8611 let funding_outpoint = ::chain::transaction::OutPoint { txid: funding_created_msg.funding_txid, index: funding_created_msg.funding_output_index };
8612 let channel_id = funding_outpoint.to_channel_id();
8614 // Now we have the first channel past funding_created (ie it has a txid-based channel_id, not a
8617 // First try to open a second channel with a temporary channel id equal to the txid-based one.
8618 // Technically this is allowed by the spec, but we don't support it and there's little reason
8619 // to. Still, it shouldn't cause any other issues.
8620 open_chan_msg.temporary_channel_id = channel_id;
8621 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_chan_msg);
8623 let events = nodes[1].node.get_and_clear_pending_msg_events();
8624 assert_eq!(events.len(), 1);
8626 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
8627 // Technically, at this point, nodes[1] would be justified in thinking both
8628 // channels are closed, but currently we do not, so we just move forward with it.
8629 assert_eq!(msg.channel_id, open_chan_msg.temporary_channel_id);
8630 assert_eq!(node_id, nodes[0].node.get_our_node_id());
8632 _ => panic!("Unexpected event"),
8636 // Now try to create a second channel which has a duplicate funding output.
8637 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
8638 let open_chan_2_msg = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
8639 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_chan_2_msg);
8640 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()));
8641 create_funding_transaction(&nodes[0], 100000, 42); // Get and check the FundingGenerationReady event
8643 let funding_created = {
8644 let mut a_channel_lock = nodes[0].node.channel_state.lock().unwrap();
8645 let mut as_chan = a_channel_lock.by_id.get_mut(&open_chan_2_msg.temporary_channel_id).unwrap();
8646 let logger = test_utils::TestLogger::new();
8647 as_chan.get_outbound_funding_created(tx.clone(), funding_outpoint, &&logger).unwrap()
8649 check_added_monitors!(nodes[0], 0);
8650 nodes[1].node.handle_funding_created(&nodes[0].node.get_our_node_id(), &funding_created);
8651 // At this point we'll try to add a duplicate channel monitor, which will be rejected, but
8652 // still needs to be cleared here.
8653 check_added_monitors!(nodes[1], 1);
8655 // ...still, nodes[1] will reject the duplicate channel.
8657 let events = nodes[1].node.get_and_clear_pending_msg_events();
8658 assert_eq!(events.len(), 1);
8660 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
8661 // Technically, at this point, nodes[1] would be justified in thinking both
8662 // channels are closed, but currently we do not, so we just move forward with it.
8663 assert_eq!(msg.channel_id, channel_id);
8664 assert_eq!(node_id, nodes[0].node.get_our_node_id());
8666 _ => panic!("Unexpected event"),
8670 // finally, finish creating the original channel and send a payment over it to make sure
8671 // everything is functional.
8672 nodes[0].node.handle_funding_signed(&nodes[1].node.get_our_node_id(), &funding_signed_msg);
8674 let mut added_monitors = nodes[0].chain_monitor.added_monitors.lock().unwrap();
8675 assert_eq!(added_monitors.len(), 1);
8676 assert_eq!(added_monitors[0].0, funding_output);
8677 added_monitors.clear();
8680 let events_4 = nodes[0].node.get_and_clear_pending_events();
8681 assert_eq!(events_4.len(), 0);
8682 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
8683 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap()[0].txid(), funding_output.txid);
8685 let (funding_locked, _) = create_chan_between_nodes_with_value_confirm(&nodes[0], &nodes[1], &tx);
8686 let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_locked);
8687 update_nodes_with_chan_announce(&nodes, 0, 1, &announcement, &as_update, &bs_update);
8688 send_payment(&nodes[0], &[&nodes[1]], 8000000, 8_000_000);
8692 fn test_error_chans_closed() {
8693 // Test that we properly handle error messages, closing appropriate channels.
8695 // Prior to #787 we'd allow a peer to make us force-close a channel we had with a different
8696 // peer. The "real" fix for that is to index channels with peers_ids, however in the mean time
8697 // we can test various edge cases around it to ensure we don't regress.
8698 let chanmon_cfgs = create_chanmon_cfgs(3);
8699 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
8700 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
8701 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
8703 // Create some initial channels
8704 let chan_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001, InitFeatures::known(), InitFeatures::known());
8705 let chan_2 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001, InitFeatures::known(), InitFeatures::known());
8706 let chan_3 = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 100000, 10001, InitFeatures::known(), InitFeatures::known());
8708 assert_eq!(nodes[0].node.list_usable_channels().len(), 3);
8709 assert_eq!(nodes[1].node.list_usable_channels().len(), 2);
8710 assert_eq!(nodes[2].node.list_usable_channels().len(), 1);
8712 // Closing a channel from a different peer has no effect
8713 nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msgs::ErrorMessage { channel_id: chan_3.2, data: "ERR".to_owned() });
8714 assert_eq!(nodes[0].node.list_usable_channels().len(), 3);
8716 // Closing one channel doesn't impact others
8717 nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msgs::ErrorMessage { channel_id: chan_2.2, data: "ERR".to_owned() });
8718 check_added_monitors!(nodes[0], 1);
8719 check_closed_broadcast!(nodes[0], false);
8720 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0).len(), 1);
8721 assert_eq!(nodes[0].node.list_usable_channels().len(), 2);
8722 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);
8723 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);
8725 // A null channel ID should close all channels
8726 let _chan_4 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 10001, InitFeatures::known(), InitFeatures::known());
8727 nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msgs::ErrorMessage { channel_id: [0; 32], data: "ERR".to_owned() });
8728 check_added_monitors!(nodes[0], 2);
8729 let events = nodes[0].node.get_and_clear_pending_msg_events();
8730 assert_eq!(events.len(), 2);
8732 MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
8733 assert_eq!(msg.contents.flags & 2, 2);
8735 _ => panic!("Unexpected event"),
8738 MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
8739 assert_eq!(msg.contents.flags & 2, 2);
8741 _ => panic!("Unexpected event"),
8743 // Note that at this point users of a standard PeerHandler will end up calling
8744 // peer_disconnected with no_connection_possible set to false, duplicating the
8745 // close-all-channels logic. That's OK, we don't want to end up not force-closing channels for
8746 // users with their own peer handling logic. We duplicate the call here, however.
8747 assert_eq!(nodes[0].node.list_usable_channels().len(), 1);
8748 assert!(nodes[0].node.list_usable_channels()[0].channel_id == chan_3.2);
8750 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), true);
8751 assert_eq!(nodes[0].node.list_usable_channels().len(), 1);
8752 assert!(nodes[0].node.list_usable_channels()[0].channel_id == chan_3.2);
8756 fn test_invalid_funding_tx() {
8757 // Test that we properly handle invalid funding transactions sent to us from a peer.
8759 // Previously, all other major lightning implementations had failed to properly sanitize
8760 // funding transactions from their counterparties, leading to a multi-implementation critical
8761 // security vulnerability (though we always sanitized properly, we've previously had
8762 // un-released crashes in the sanitization process).
8763 let chanmon_cfgs = create_chanmon_cfgs(2);
8764 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8765 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8766 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8768 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100_000, 10_000, 42, None).unwrap();
8769 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()));
8770 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()));
8772 let (temporary_channel_id, mut tx, _) = create_funding_transaction(&nodes[0], 100_000, 42);
8773 for output in tx.output.iter_mut() {
8774 // Make the confirmed funding transaction have a bogus script_pubkey
8775 output.script_pubkey = bitcoin::Script::new();
8778 nodes[0].node.funding_transaction_generated_unchecked(&temporary_channel_id, tx.clone(), 0).unwrap();
8779 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()));
8780 check_added_monitors!(nodes[1], 1);
8782 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()));
8783 check_added_monitors!(nodes[0], 1);
8785 let events_1 = nodes[0].node.get_and_clear_pending_events();
8786 assert_eq!(events_1.len(), 0);
8788 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
8789 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap()[0], tx);
8790 nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
8792 confirm_transaction_at(&nodes[1], &tx, 1);
8793 check_added_monitors!(nodes[1], 1);
8794 let events_2 = nodes[1].node.get_and_clear_pending_msg_events();
8795 assert_eq!(events_2.len(), 1);
8796 if let MessageSendEvent::HandleError { node_id, action } = &events_2[0] {
8797 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
8798 if let msgs::ErrorAction::SendErrorMessage { msg } = action {
8799 assert_eq!(msg.data, "funding tx had wrong script/value or output index");
8800 } else { panic!(); }
8801 } else { panic!(); }
8802 assert_eq!(nodes[1].node.list_channels().len(), 0);