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.
15 use chain::channelmonitor;
16 use chain::channelmonitor::{ChannelMonitor, CLTV_CLAIM_BUFFER, LATENCY_GRACE_PERIOD_BLOCKS, ANTI_REORG_DELAY};
17 use chain::transaction::OutPoint;
18 use chain::keysinterface::{ChannelKeys, KeysInterface, SpendableOutputDescriptor};
19 use ln::channel::{COMMITMENT_TX_BASE_WEIGHT, COMMITMENT_TX_WEIGHT_PER_HTLC};
20 use ln::channelmanager::{ChannelManager, ChannelManagerReadArgs, RAACommitmentOrder, PaymentPreimage, PaymentHash, PaymentSecret, PaymentSendFailure, BREAKDOWN_TIMEOUT};
21 use ln::channel::{Channel, ChannelError};
22 use ln::{chan_utils, onion_utils};
23 use routing::router::{Route, RouteHop, get_route};
24 use ln::features::{ChannelFeatures, InitFeatures, NodeFeatures};
26 use ln::msgs::{ChannelMessageHandler,RoutingMessageHandler,HTLCFailChannelUpdate, ErrorAction};
27 use util::enforcing_trait_impls::EnforcingChannelKeys;
28 use util::{byte_utils, test_utils};
29 use util::events::{Event, EventsProvider, MessageSendEvent, MessageSendEventsProvider};
30 use util::errors::APIError;
31 use util::ser::{Writeable, ReadableArgs, Readable};
32 use util::config::UserConfig;
34 use bitcoin::hashes::sha256d::Hash as Sha256dHash;
35 use bitcoin::hashes::HashEngine;
36 use bitcoin::hash_types::{Txid, BlockHash, WPubkeyHash};
37 use bitcoin::util::bip143;
38 use bitcoin::util::address::Address;
39 use bitcoin::util::bip32::{ChildNumber, ExtendedPubKey, ExtendedPrivKey};
40 use bitcoin::blockdata::block::{Block, BlockHeader};
41 use bitcoin::blockdata::transaction::{Transaction, TxOut, TxIn, SigHashType, OutPoint as BitcoinOutPoint};
42 use bitcoin::blockdata::script::{Builder, Script};
43 use bitcoin::blockdata::opcodes;
44 use bitcoin::blockdata::constants::genesis_block;
45 use bitcoin::network::constants::Network;
47 use bitcoin::hashes::sha256::Hash as Sha256;
48 use bitcoin::hashes::Hash;
50 use bitcoin::secp256k1::{Secp256k1, Message};
51 use bitcoin::secp256k1::key::{PublicKey,SecretKey};
55 use std::collections::{BTreeSet, HashMap, HashSet};
56 use std::default::Default;
57 use std::sync::{Arc, Mutex};
58 use std::sync::atomic::Ordering;
61 use ln::functional_test_utils::*;
62 use ln::chan_utils::PreCalculatedTxCreationKeys;
65 fn test_insane_channel_opens() {
66 // Stand up a network of 2 nodes
67 let chanmon_cfgs = create_chanmon_cfgs(2);
68 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
69 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
70 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
72 // Instantiate channel parameters where we push the maximum msats given our
74 let channel_value_sat = 31337; // same as funding satoshis
75 let channel_reserve_satoshis = Channel::<EnforcingChannelKeys>::get_holder_selected_channel_reserve_satoshis(channel_value_sat);
76 let push_msat = (channel_value_sat - channel_reserve_satoshis) * 1000;
78 // Have node0 initiate a channel to node1 with aforementioned parameters
79 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_sat, push_msat, 42, None).unwrap();
81 // Extract the channel open message from node0 to node1
82 let open_channel_message = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
84 // Test helper that asserts we get the correct error string given a mutator
85 // that supposedly makes the channel open message insane
86 let insane_open_helper = |expected_error_str: &str, message_mutator: fn(msgs::OpenChannel) -> msgs::OpenChannel| {
87 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &message_mutator(open_channel_message.clone()));
88 let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
89 assert_eq!(msg_events.len(), 1);
90 let expected_regex = regex::Regex::new(expected_error_str).unwrap();
91 if let MessageSendEvent::HandleError { ref action, .. } = msg_events[0] {
93 &ErrorAction::SendErrorMessage { .. } => {
94 nodes[1].logger.assert_log_regex("lightning::ln::channelmanager".to_string(), expected_regex, 1);
96 _ => panic!("unexpected event!"),
98 } else { assert!(false); }
101 use ln::channel::MAX_FUNDING_SATOSHIS;
102 use ln::channelmanager::MAX_LOCAL_BREAKDOWN_TIMEOUT;
104 // Test all mutations that would make the channel open message insane
105 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 });
107 insane_open_helper("Bogus channel_reserve_satoshis", |mut msg| { msg.channel_reserve_satoshis = msg.funding_satoshis + 1; msg });
109 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 });
111 insane_open_helper("Peer never wants payout outputs?", |mut msg| { msg.dust_limit_satoshis = msg.funding_satoshis + 1 ; msg });
113 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 });
115 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 });
117 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 });
119 insane_open_helper("0 max_accepted_htlcs makes for a useless channel", |mut msg| { msg.max_accepted_htlcs = 0; msg });
121 insane_open_helper("max_accepted_htlcs was 484. It must not be larger than 483", |mut msg| { msg.max_accepted_htlcs = 484; msg });
125 fn test_async_inbound_update_fee() {
126 let chanmon_cfgs = create_chanmon_cfgs(2);
127 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
128 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
129 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
130 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
131 let logger = test_utils::TestLogger::new();
132 let channel_id = chan.2;
135 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
139 // send (1) commitment_signed -.
140 // <- update_add_htlc/commitment_signed
141 // send (2) RAA (awaiting remote revoke) -.
142 // (1) commitment_signed is delivered ->
143 // .- send (3) RAA (awaiting remote revoke)
144 // (2) RAA is delivered ->
145 // .- send (4) commitment_signed
146 // <- (3) RAA is delivered
147 // send (5) commitment_signed -.
148 // <- (4) commitment_signed is delivered
150 // (5) commitment_signed is delivered ->
152 // (6) RAA is delivered ->
154 // First nodes[0] generates an update_fee
155 nodes[0].node.update_fee(channel_id, get_feerate!(nodes[0], channel_id) + 20).unwrap();
156 check_added_monitors!(nodes[0], 1);
158 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
159 assert_eq!(events_0.len(), 1);
160 let (update_msg, commitment_signed) = match events_0[0] { // (1)
161 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
162 (update_fee.as_ref(), commitment_signed)
164 _ => panic!("Unexpected event"),
167 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
169 // ...but before it's delivered, nodes[1] starts to send a payment back to nodes[0]...
170 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
171 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
172 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(), None, &Vec::new(), 40000, TEST_FINAL_CLTV, &logger).unwrap(), our_payment_hash, &None).unwrap();
173 check_added_monitors!(nodes[1], 1);
175 let payment_event = {
176 let mut events_1 = nodes[1].node.get_and_clear_pending_msg_events();
177 assert_eq!(events_1.len(), 1);
178 SendEvent::from_event(events_1.remove(0))
180 assert_eq!(payment_event.node_id, nodes[0].node.get_our_node_id());
181 assert_eq!(payment_event.msgs.len(), 1);
183 // ...now when the messages get delivered everyone should be happy
184 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]);
185 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg); // (2)
186 let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
187 // nodes[0] is awaiting nodes[1] revoke_and_ack so get_event_msg's assert(len == 1) passes
188 check_added_monitors!(nodes[0], 1);
190 // deliver(1), generate (3):
191 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
192 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
193 // nodes[1] is awaiting nodes[0] revoke_and_ack so get_event_msg's assert(len == 1) passes
194 check_added_monitors!(nodes[1], 1);
196 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack); // deliver (2)
197 let bs_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
198 assert!(bs_update.update_add_htlcs.is_empty()); // (4)
199 assert!(bs_update.update_fulfill_htlcs.is_empty()); // (4)
200 assert!(bs_update.update_fail_htlcs.is_empty()); // (4)
201 assert!(bs_update.update_fail_malformed_htlcs.is_empty()); // (4)
202 assert!(bs_update.update_fee.is_none()); // (4)
203 check_added_monitors!(nodes[1], 1);
205 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack); // deliver (3)
206 let as_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
207 assert!(as_update.update_add_htlcs.is_empty()); // (5)
208 assert!(as_update.update_fulfill_htlcs.is_empty()); // (5)
209 assert!(as_update.update_fail_htlcs.is_empty()); // (5)
210 assert!(as_update.update_fail_malformed_htlcs.is_empty()); // (5)
211 assert!(as_update.update_fee.is_none()); // (5)
212 check_added_monitors!(nodes[0], 1);
214 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_update.commitment_signed); // deliver (4)
215 let as_second_revoke = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
216 // only (6) so get_event_msg's assert(len == 1) passes
217 check_added_monitors!(nodes[0], 1);
219 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_update.commitment_signed); // deliver (5)
220 let bs_second_revoke = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
221 check_added_monitors!(nodes[1], 1);
223 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke);
224 check_added_monitors!(nodes[0], 1);
226 let events_2 = nodes[0].node.get_and_clear_pending_events();
227 assert_eq!(events_2.len(), 1);
229 Event::PendingHTLCsForwardable {..} => {}, // If we actually processed we'd receive the payment
230 _ => panic!("Unexpected event"),
233 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_second_revoke); // deliver (6)
234 check_added_monitors!(nodes[1], 1);
238 fn test_update_fee_unordered_raa() {
239 // Just the intro to the previous test followed by an out-of-order RAA (which caused a
240 // crash in an earlier version of the update_fee patch)
241 let chanmon_cfgs = create_chanmon_cfgs(2);
242 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
243 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
244 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
245 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
246 let channel_id = chan.2;
247 let logger = test_utils::TestLogger::new();
250 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
252 // First nodes[0] generates an update_fee
253 nodes[0].node.update_fee(channel_id, get_feerate!(nodes[0], channel_id) + 20).unwrap();
254 check_added_monitors!(nodes[0], 1);
256 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
257 assert_eq!(events_0.len(), 1);
258 let update_msg = match events_0[0] { // (1)
259 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, .. }, .. } => {
262 _ => panic!("Unexpected event"),
265 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
267 // ...but before it's delivered, nodes[1] starts to send a payment back to nodes[0]...
268 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
269 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
270 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(), None, &Vec::new(), 40000, TEST_FINAL_CLTV, &logger).unwrap(), our_payment_hash, &None).unwrap();
271 check_added_monitors!(nodes[1], 1);
273 let payment_event = {
274 let mut events_1 = nodes[1].node.get_and_clear_pending_msg_events();
275 assert_eq!(events_1.len(), 1);
276 SendEvent::from_event(events_1.remove(0))
278 assert_eq!(payment_event.node_id, nodes[0].node.get_our_node_id());
279 assert_eq!(payment_event.msgs.len(), 1);
281 // ...now when the messages get delivered everyone should be happy
282 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]);
283 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg); // (2)
284 let as_revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
285 // nodes[0] is awaiting nodes[1] revoke_and_ack so get_event_msg's assert(len == 1) passes
286 check_added_monitors!(nodes[0], 1);
288 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_msg); // deliver (2)
289 check_added_monitors!(nodes[1], 1);
291 // We can't continue, sadly, because our (1) now has a bogus signature
295 fn test_multi_flight_update_fee() {
296 let chanmon_cfgs = create_chanmon_cfgs(2);
297 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
298 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
299 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
300 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
301 let channel_id = chan.2;
304 // update_fee/commitment_signed ->
305 // .- send (1) RAA and (2) commitment_signed
306 // update_fee (never committed) ->
308 // We have to manually generate the above update_fee, it is allowed by the protocol but we
309 // don't track which updates correspond to which revoke_and_ack responses so we're in
310 // AwaitingRAA mode and will not generate the update_fee yet.
311 // <- (1) RAA delivered
312 // (3) is generated and send (4) CS -.
313 // Note that A cannot generate (4) prior to (1) being delivered as it otherwise doesn't
314 // know the per_commitment_point to use for it.
315 // <- (2) commitment_signed delivered
317 // B should send no response here
318 // (4) commitment_signed delivered ->
319 // <- RAA/commitment_signed delivered
322 // First nodes[0] generates an update_fee
323 let initial_feerate = get_feerate!(nodes[0], channel_id);
324 nodes[0].node.update_fee(channel_id, initial_feerate + 20).unwrap();
325 check_added_monitors!(nodes[0], 1);
327 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
328 assert_eq!(events_0.len(), 1);
329 let (update_msg_1, commitment_signed_1) = match events_0[0] { // (1)
330 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
331 (update_fee.as_ref().unwrap(), commitment_signed)
333 _ => panic!("Unexpected event"),
336 // Deliver first update_fee/commitment_signed pair, generating (1) and (2):
337 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg_1);
338 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed_1);
339 let (bs_revoke_msg, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
340 check_added_monitors!(nodes[1], 1);
342 // nodes[0] is awaiting a revoke from nodes[1] before it will create a new commitment
344 nodes[0].node.update_fee(channel_id, initial_feerate + 40).unwrap();
345 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
346 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
348 // Create the (3) update_fee message that nodes[0] will generate before it does...
349 let mut update_msg_2 = msgs::UpdateFee {
350 channel_id: update_msg_1.channel_id.clone(),
351 feerate_per_kw: (initial_feerate + 30) as u32,
354 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg_2);
356 update_msg_2.feerate_per_kw = (initial_feerate + 40) as u32;
358 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg_2);
360 // Deliver (1), generating (3) and (4)
361 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_msg);
362 let as_second_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
363 check_added_monitors!(nodes[0], 1);
364 assert!(as_second_update.update_add_htlcs.is_empty());
365 assert!(as_second_update.update_fulfill_htlcs.is_empty());
366 assert!(as_second_update.update_fail_htlcs.is_empty());
367 assert!(as_second_update.update_fail_malformed_htlcs.is_empty());
368 // Check that the update_fee newly generated matches what we delivered:
369 assert_eq!(as_second_update.update_fee.as_ref().unwrap().channel_id, update_msg_2.channel_id);
370 assert_eq!(as_second_update.update_fee.as_ref().unwrap().feerate_per_kw, update_msg_2.feerate_per_kw);
372 // Deliver (2) commitment_signed
373 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_commitment_signed);
374 let as_revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
375 check_added_monitors!(nodes[0], 1);
376 // No commitment_signed so get_event_msg's assert(len == 1) passes
378 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_msg);
379 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
380 check_added_monitors!(nodes[1], 1);
383 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_second_update.commitment_signed);
384 let (bs_second_revoke, bs_second_commitment) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
385 check_added_monitors!(nodes[1], 1);
387 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke);
388 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
389 check_added_monitors!(nodes[0], 1);
391 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_commitment);
392 let as_second_revoke = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
393 // No commitment_signed so get_event_msg's assert(len == 1) passes
394 check_added_monitors!(nodes[0], 1);
396 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_second_revoke);
397 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
398 check_added_monitors!(nodes[1], 1);
402 fn test_1_conf_open() {
403 // Previously, if the minium_depth config was set to 1, we'd never send a funding_locked. This
404 // tests that we properly send one in that case.
405 let mut alice_config = UserConfig::default();
406 alice_config.own_channel_config.minimum_depth = 1;
407 alice_config.channel_options.announced_channel = true;
408 alice_config.peer_channel_config_limits.force_announced_channel_preference = false;
409 let mut bob_config = UserConfig::default();
410 bob_config.own_channel_config.minimum_depth = 1;
411 bob_config.channel_options.announced_channel = true;
412 bob_config.peer_channel_config_limits.force_announced_channel_preference = false;
413 let chanmon_cfgs = create_chanmon_cfgs(2);
414 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
415 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[Some(alice_config), Some(bob_config)]);
416 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
418 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001, InitFeatures::known(), InitFeatures::known());
420 header: BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
423 connect_block(&nodes[1], &block, 1);
424 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()));
426 connect_block(&nodes[0], &block, 1);
427 let (funding_locked, _) = create_chan_between_nodes_with_value_confirm_second(&nodes[1], &nodes[0]);
428 let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_locked);
431 assert!(node.net_graph_msg_handler.handle_channel_announcement(&announcement).unwrap());
432 node.net_graph_msg_handler.handle_channel_update(&as_update).unwrap();
433 node.net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
437 fn do_test_sanity_on_in_flight_opens(steps: u8) {
438 // Previously, we had issues deserializing channels when we hadn't connected the first block
439 // after creation. To catch that and similar issues, we lean on the Node::drop impl to test
440 // serialization round-trips and simply do steps towards opening a channel and then drop the
443 let chanmon_cfgs = create_chanmon_cfgs(2);
444 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
445 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
446 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
448 if steps & 0b1000_0000 != 0{
450 header: BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
453 connect_block(&nodes[0], &block, 1);
454 connect_block(&nodes[1], &block, 1);
457 if steps & 0x0f == 0 { return; }
458 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
459 let open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
461 if steps & 0x0f == 1 { return; }
462 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_channel);
463 let accept_channel = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
465 if steps & 0x0f == 2 { return; }
466 nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &accept_channel);
468 let (temporary_channel_id, tx, funding_output) = create_funding_transaction(&nodes[0], 100000, 42);
470 if steps & 0x0f == 3 { return; }
471 nodes[0].node.funding_transaction_generated(&temporary_channel_id, funding_output);
472 check_added_monitors!(nodes[0], 0);
473 let funding_created = get_event_msg!(nodes[0], MessageSendEvent::SendFundingCreated, nodes[1].node.get_our_node_id());
475 if steps & 0x0f == 4 { return; }
476 nodes[1].node.handle_funding_created(&nodes[0].node.get_our_node_id(), &funding_created);
478 let mut added_monitors = nodes[1].chain_monitor.added_monitors.lock().unwrap();
479 assert_eq!(added_monitors.len(), 1);
480 assert_eq!(added_monitors[0].0, funding_output);
481 added_monitors.clear();
483 let funding_signed = get_event_msg!(nodes[1], MessageSendEvent::SendFundingSigned, nodes[0].node.get_our_node_id());
485 if steps & 0x0f == 5 { return; }
486 nodes[0].node.handle_funding_signed(&nodes[1].node.get_our_node_id(), &funding_signed);
488 let mut added_monitors = nodes[0].chain_monitor.added_monitors.lock().unwrap();
489 assert_eq!(added_monitors.len(), 1);
490 assert_eq!(added_monitors[0].0, funding_output);
491 added_monitors.clear();
494 let events_4 = nodes[0].node.get_and_clear_pending_events();
495 assert_eq!(events_4.len(), 1);
497 Event::FundingBroadcastSafe { ref funding_txo, user_channel_id } => {
498 assert_eq!(user_channel_id, 42);
499 assert_eq!(*funding_txo, funding_output);
501 _ => panic!("Unexpected event"),
504 if steps & 0x0f == 6 { return; }
505 create_chan_between_nodes_with_value_confirm_first(&nodes[0], &nodes[1], &tx);
507 if steps & 0x0f == 7 { return; }
508 confirm_transaction(&nodes[0], &tx);
509 create_chan_between_nodes_with_value_confirm_second(&nodes[1], &nodes[0]);
513 fn test_sanity_on_in_flight_opens() {
514 do_test_sanity_on_in_flight_opens(0);
515 do_test_sanity_on_in_flight_opens(0 | 0b1000_0000);
516 do_test_sanity_on_in_flight_opens(1);
517 do_test_sanity_on_in_flight_opens(1 | 0b1000_0000);
518 do_test_sanity_on_in_flight_opens(2);
519 do_test_sanity_on_in_flight_opens(2 | 0b1000_0000);
520 do_test_sanity_on_in_flight_opens(3);
521 do_test_sanity_on_in_flight_opens(3 | 0b1000_0000);
522 do_test_sanity_on_in_flight_opens(4);
523 do_test_sanity_on_in_flight_opens(4 | 0b1000_0000);
524 do_test_sanity_on_in_flight_opens(5);
525 do_test_sanity_on_in_flight_opens(5 | 0b1000_0000);
526 do_test_sanity_on_in_flight_opens(6);
527 do_test_sanity_on_in_flight_opens(6 | 0b1000_0000);
528 do_test_sanity_on_in_flight_opens(7);
529 do_test_sanity_on_in_flight_opens(7 | 0b1000_0000);
530 do_test_sanity_on_in_flight_opens(8);
531 do_test_sanity_on_in_flight_opens(8 | 0b1000_0000);
535 fn test_update_fee_vanilla() {
536 let chanmon_cfgs = create_chanmon_cfgs(2);
537 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
538 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
539 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
540 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
541 let channel_id = chan.2;
543 let feerate = get_feerate!(nodes[0], channel_id);
544 nodes[0].node.update_fee(channel_id, feerate+25).unwrap();
545 check_added_monitors!(nodes[0], 1);
547 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
548 assert_eq!(events_0.len(), 1);
549 let (update_msg, commitment_signed) = match events_0[0] {
550 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 } } => {
551 (update_fee.as_ref(), commitment_signed)
553 _ => panic!("Unexpected event"),
555 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
557 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
558 let (revoke_msg, commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
559 check_added_monitors!(nodes[1], 1);
561 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg);
562 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
563 check_added_monitors!(nodes[0], 1);
565 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed);
566 let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
567 // No commitment_signed so get_event_msg's assert(len == 1) passes
568 check_added_monitors!(nodes[0], 1);
570 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg);
571 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
572 check_added_monitors!(nodes[1], 1);
576 fn test_update_fee_that_funder_cannot_afford() {
577 let chanmon_cfgs = create_chanmon_cfgs(2);
578 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
579 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
580 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
581 let channel_value = 1888;
582 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, channel_value, 700000, InitFeatures::known(), InitFeatures::known());
583 let channel_id = chan.2;
586 nodes[0].node.update_fee(channel_id, feerate).unwrap();
587 check_added_monitors!(nodes[0], 1);
588 let update_msg = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
590 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg.update_fee.unwrap());
592 commitment_signed_dance!(nodes[1], nodes[0], update_msg.commitment_signed, false);
594 //Confirm that the new fee based on the last local commitment txn is what we expected based on the feerate of 260 set above.
595 //This value results in a fee that is exactly what the funder can afford (277 sat + 1000 sat channel reserve)
597 let commitment_tx = get_local_commitment_txn!(nodes[1], channel_id)[0].clone();
599 //We made sure neither party's funds are below the dust limit so -2 non-HTLC txns from number of outputs
600 let num_htlcs = commitment_tx.output.len() - 2;
601 let total_fee: u64 = feerate as u64 * (COMMITMENT_TX_BASE_WEIGHT + (num_htlcs as u64) * COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000;
602 let mut actual_fee = commitment_tx.output.iter().fold(0, |acc, output| acc + output.value);
603 actual_fee = channel_value - actual_fee;
604 assert_eq!(total_fee, actual_fee);
607 //Add 2 to the previous fee rate to the final fee increases by 1 (with no HTLCs the fee is essentially
608 //fee_rate*(724/1000) so the increment of 1*0.724 is rounded back down)
609 nodes[0].node.update_fee(channel_id, feerate+2).unwrap();
610 check_added_monitors!(nodes[0], 1);
612 let update2_msg = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
614 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update2_msg.update_fee.unwrap());
616 //While producing the commitment_signed response after handling a received update_fee request the
617 //check to see if the funder, who sent the update_fee request, can afford the new fee (funder_balance >= fee+channel_reserve)
618 //Should produce and error.
619 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &update2_msg.commitment_signed);
620 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Funding remote cannot afford proposed new fee".to_string(), 1);
621 check_added_monitors!(nodes[1], 1);
622 check_closed_broadcast!(nodes[1], true);
626 fn test_update_fee_with_fundee_update_add_htlc() {
627 let chanmon_cfgs = create_chanmon_cfgs(2);
628 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
629 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
630 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
631 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
632 let channel_id = chan.2;
633 let logger = test_utils::TestLogger::new();
636 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
638 let feerate = get_feerate!(nodes[0], channel_id);
639 nodes[0].node.update_fee(channel_id, feerate+20).unwrap();
640 check_added_monitors!(nodes[0], 1);
642 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
643 assert_eq!(events_0.len(), 1);
644 let (update_msg, commitment_signed) = match events_0[0] {
645 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 } } => {
646 (update_fee.as_ref(), commitment_signed)
648 _ => panic!("Unexpected event"),
650 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
651 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
652 let (revoke_msg, commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
653 check_added_monitors!(nodes[1], 1);
655 let (our_payment_preimage, our_payment_hash) = get_payment_preimage_hash!(nodes[1]);
656 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
657 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(), None, &Vec::new(), 800000, TEST_FINAL_CLTV, &logger).unwrap();
659 // nothing happens since node[1] is in AwaitingRemoteRevoke
660 nodes[1].node.send_payment(&route, our_payment_hash, &None).unwrap();
662 let mut added_monitors = nodes[0].chain_monitor.added_monitors.lock().unwrap();
663 assert_eq!(added_monitors.len(), 0);
664 added_monitors.clear();
666 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
667 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
668 // node[1] has nothing to do
670 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg);
671 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
672 check_added_monitors!(nodes[0], 1);
674 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed);
675 let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
676 // No commitment_signed so get_event_msg's assert(len == 1) passes
677 check_added_monitors!(nodes[0], 1);
678 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg);
679 check_added_monitors!(nodes[1], 1);
680 // AwaitingRemoteRevoke ends here
682 let commitment_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
683 assert_eq!(commitment_update.update_add_htlcs.len(), 1);
684 assert_eq!(commitment_update.update_fulfill_htlcs.len(), 0);
685 assert_eq!(commitment_update.update_fail_htlcs.len(), 0);
686 assert_eq!(commitment_update.update_fail_malformed_htlcs.len(), 0);
687 assert_eq!(commitment_update.update_fee.is_none(), true);
689 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &commitment_update.update_add_htlcs[0]);
690 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_update.commitment_signed);
691 check_added_monitors!(nodes[0], 1);
692 let (revoke, commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
694 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke);
695 check_added_monitors!(nodes[1], 1);
696 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
698 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &commitment_signed);
699 check_added_monitors!(nodes[1], 1);
700 let revoke = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
701 // No commitment_signed so get_event_msg's assert(len == 1) passes
703 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke);
704 check_added_monitors!(nodes[0], 1);
705 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
707 expect_pending_htlcs_forwardable!(nodes[0]);
709 let events = nodes[0].node.get_and_clear_pending_events();
710 assert_eq!(events.len(), 1);
712 Event::PaymentReceived { .. } => { },
713 _ => panic!("Unexpected event"),
716 claim_payment(&nodes[1], &vec!(&nodes[0])[..], our_payment_preimage, 800_000);
718 send_payment(&nodes[1], &vec!(&nodes[0])[..], 800000, 800_000);
719 send_payment(&nodes[0], &vec!(&nodes[1])[..], 800000, 800_000);
720 close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true);
724 fn test_update_fee() {
725 let chanmon_cfgs = create_chanmon_cfgs(2);
726 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
727 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
728 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
729 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
730 let channel_id = chan.2;
733 // (1) update_fee/commitment_signed ->
734 // <- (2) revoke_and_ack
735 // .- send (3) commitment_signed
736 // (4) update_fee/commitment_signed ->
737 // .- send (5) revoke_and_ack (no CS as we're awaiting a revoke)
738 // <- (3) commitment_signed delivered
739 // send (6) revoke_and_ack -.
740 // <- (5) deliver revoke_and_ack
741 // (6) deliver revoke_and_ack ->
742 // .- send (7) commitment_signed in response to (4)
743 // <- (7) deliver commitment_signed
746 // Create and deliver (1)...
747 let feerate = get_feerate!(nodes[0], channel_id);
748 nodes[0].node.update_fee(channel_id, feerate+20).unwrap();
749 check_added_monitors!(nodes[0], 1);
751 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
752 assert_eq!(events_0.len(), 1);
753 let (update_msg, commitment_signed) = match events_0[0] {
754 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 } } => {
755 (update_fee.as_ref(), commitment_signed)
757 _ => panic!("Unexpected event"),
759 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
761 // Generate (2) and (3):
762 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
763 let (revoke_msg, commitment_signed_0) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
764 check_added_monitors!(nodes[1], 1);
767 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg);
768 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
769 check_added_monitors!(nodes[0], 1);
771 // Create and deliver (4)...
772 nodes[0].node.update_fee(channel_id, feerate+30).unwrap();
773 check_added_monitors!(nodes[0], 1);
774 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
775 assert_eq!(events_0.len(), 1);
776 let (update_msg, commitment_signed) = match events_0[0] {
777 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 } } => {
778 (update_fee.as_ref(), commitment_signed)
780 _ => panic!("Unexpected event"),
783 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
784 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
785 check_added_monitors!(nodes[1], 1);
787 let revoke_msg = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
788 // No commitment_signed so get_event_msg's assert(len == 1) passes
790 // Handle (3), creating (6):
791 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed_0);
792 check_added_monitors!(nodes[0], 1);
793 let revoke_msg_0 = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
794 // No commitment_signed so get_event_msg's assert(len == 1) passes
797 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg);
798 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
799 check_added_monitors!(nodes[0], 1);
801 // Deliver (6), creating (7):
802 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg_0);
803 let commitment_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
804 assert!(commitment_update.update_add_htlcs.is_empty());
805 assert!(commitment_update.update_fulfill_htlcs.is_empty());
806 assert!(commitment_update.update_fail_htlcs.is_empty());
807 assert!(commitment_update.update_fail_malformed_htlcs.is_empty());
808 assert!(commitment_update.update_fee.is_none());
809 check_added_monitors!(nodes[1], 1);
812 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_update.commitment_signed);
813 check_added_monitors!(nodes[0], 1);
814 let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
815 // No commitment_signed so get_event_msg's assert(len == 1) passes
817 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg);
818 check_added_monitors!(nodes[1], 1);
819 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
821 assert_eq!(get_feerate!(nodes[0], channel_id), feerate + 30);
822 assert_eq!(get_feerate!(nodes[1], channel_id), feerate + 30);
823 close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true);
827 fn pre_funding_lock_shutdown_test() {
828 // Test sending a shutdown prior to funding_locked after funding generation
829 let chanmon_cfgs = create_chanmon_cfgs(2);
830 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
831 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
832 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
833 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 8000000, 0, InitFeatures::known(), InitFeatures::known());
834 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
835 connect_block(&nodes[0], &Block { header, txdata: vec![tx.clone()]}, 1);
836 connect_block(&nodes[1], &Block { header, txdata: vec![tx.clone()]}, 1);
838 nodes[0].node.close_channel(&OutPoint { txid: tx.txid(), index: 0 }.to_channel_id()).unwrap();
839 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
840 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
841 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
842 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown);
844 let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
845 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
846 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
847 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap());
848 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
849 assert!(node_0_none.is_none());
851 assert!(nodes[0].node.list_channels().is_empty());
852 assert!(nodes[1].node.list_channels().is_empty());
856 fn updates_shutdown_wait() {
857 // Test sending a shutdown with outstanding updates pending
858 let chanmon_cfgs = create_chanmon_cfgs(3);
859 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
860 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
861 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
862 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
863 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
864 let logger = test_utils::TestLogger::new();
866 let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000);
868 nodes[0].node.close_channel(&chan_1.2).unwrap();
869 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
870 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
871 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
872 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown);
874 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
875 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
877 let (_, payment_hash) = get_payment_preimage_hash!(nodes[0]);
879 let net_graph_msg_handler0 = &nodes[0].net_graph_msg_handler;
880 let net_graph_msg_handler1 = &nodes[1].net_graph_msg_handler;
881 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(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
882 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(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
883 unwrap_send_err!(nodes[0].node.send_payment(&route_1, payment_hash, &None), true, APIError::ChannelUnavailable {..}, {});
884 unwrap_send_err!(nodes[1].node.send_payment(&route_2, payment_hash, &None), true, APIError::ChannelUnavailable {..}, {});
886 assert!(nodes[2].node.claim_funds(our_payment_preimage, &None, 100_000));
887 check_added_monitors!(nodes[2], 1);
888 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
889 assert!(updates.update_add_htlcs.is_empty());
890 assert!(updates.update_fail_htlcs.is_empty());
891 assert!(updates.update_fail_malformed_htlcs.is_empty());
892 assert!(updates.update_fee.is_none());
893 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
894 nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
895 check_added_monitors!(nodes[1], 1);
896 let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
897 commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false);
899 assert!(updates_2.update_add_htlcs.is_empty());
900 assert!(updates_2.update_fail_htlcs.is_empty());
901 assert!(updates_2.update_fail_malformed_htlcs.is_empty());
902 assert!(updates_2.update_fee.is_none());
903 assert_eq!(updates_2.update_fulfill_htlcs.len(), 1);
904 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]);
905 commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
907 let events = nodes[0].node.get_and_clear_pending_events();
908 assert_eq!(events.len(), 1);
910 Event::PaymentSent { ref payment_preimage } => {
911 assert_eq!(our_payment_preimage, *payment_preimage);
913 _ => panic!("Unexpected event"),
916 let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
917 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
918 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
919 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap());
920 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
921 assert!(node_0_none.is_none());
923 assert!(nodes[0].node.list_channels().is_empty());
925 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
926 nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
927 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
928 assert!(nodes[1].node.list_channels().is_empty());
929 assert!(nodes[2].node.list_channels().is_empty());
933 fn htlc_fail_async_shutdown() {
934 // Test HTLCs fail if shutdown starts even if messages are delivered out-of-order
935 let chanmon_cfgs = create_chanmon_cfgs(3);
936 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
937 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
938 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
939 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
940 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
941 let logger = test_utils::TestLogger::new();
943 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
944 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
945 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(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
946 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
947 check_added_monitors!(nodes[0], 1);
948 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
949 assert_eq!(updates.update_add_htlcs.len(), 1);
950 assert!(updates.update_fulfill_htlcs.is_empty());
951 assert!(updates.update_fail_htlcs.is_empty());
952 assert!(updates.update_fail_malformed_htlcs.is_empty());
953 assert!(updates.update_fee.is_none());
955 nodes[1].node.close_channel(&chan_1.2).unwrap();
956 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
957 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown);
958 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
960 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
961 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &updates.commitment_signed);
962 check_added_monitors!(nodes[1], 1);
963 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
964 commitment_signed_dance!(nodes[1], nodes[0], (), false, true, false);
966 let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
967 assert!(updates_2.update_add_htlcs.is_empty());
968 assert!(updates_2.update_fulfill_htlcs.is_empty());
969 assert_eq!(updates_2.update_fail_htlcs.len(), 1);
970 assert!(updates_2.update_fail_malformed_htlcs.is_empty());
971 assert!(updates_2.update_fee.is_none());
973 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fail_htlcs[0]);
974 commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
976 expect_payment_failed!(nodes[0], our_payment_hash, false);
978 let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
979 assert_eq!(msg_events.len(), 2);
980 let node_0_closing_signed = match msg_events[0] {
981 MessageSendEvent::SendClosingSigned { ref node_id, ref msg } => {
982 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
985 _ => panic!("Unexpected event"),
987 match msg_events[1] {
988 MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelUpdateMessage { ref msg }} => {
989 assert_eq!(msg.contents.short_channel_id, chan_1.0.contents.short_channel_id);
991 _ => panic!("Unexpected event"),
994 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
995 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
996 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
997 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap());
998 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
999 assert!(node_0_none.is_none());
1001 assert!(nodes[0].node.list_channels().is_empty());
1003 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
1004 nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
1005 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
1006 assert!(nodes[1].node.list_channels().is_empty());
1007 assert!(nodes[2].node.list_channels().is_empty());
1010 fn do_test_shutdown_rebroadcast(recv_count: u8) {
1011 // Test that shutdown/closing_signed is re-sent on reconnect with a variable number of
1012 // messages delivered prior to disconnect
1013 let chanmon_cfgs = create_chanmon_cfgs(3);
1014 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1015 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1016 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1017 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
1018 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
1020 let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000);
1022 nodes[1].node.close_channel(&chan_1.2).unwrap();
1023 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
1025 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown);
1026 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
1028 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
1032 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
1033 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
1035 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1036 let node_0_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
1037 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1038 let node_1_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
1040 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_reestablish);
1041 let node_1_2nd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
1042 assert!(node_1_shutdown == node_1_2nd_shutdown);
1044 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_reestablish);
1045 let node_0_2nd_shutdown = if recv_count > 0 {
1046 let node_0_2nd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
1047 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_2nd_shutdown);
1050 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1051 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_2nd_shutdown);
1052 get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id())
1054 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_2nd_shutdown);
1056 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1057 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1059 assert!(nodes[2].node.claim_funds(our_payment_preimage, &None, 100_000));
1060 check_added_monitors!(nodes[2], 1);
1061 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
1062 assert!(updates.update_add_htlcs.is_empty());
1063 assert!(updates.update_fail_htlcs.is_empty());
1064 assert!(updates.update_fail_malformed_htlcs.is_empty());
1065 assert!(updates.update_fee.is_none());
1066 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
1067 nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
1068 check_added_monitors!(nodes[1], 1);
1069 let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1070 commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false);
1072 assert!(updates_2.update_add_htlcs.is_empty());
1073 assert!(updates_2.update_fail_htlcs.is_empty());
1074 assert!(updates_2.update_fail_malformed_htlcs.is_empty());
1075 assert!(updates_2.update_fee.is_none());
1076 assert_eq!(updates_2.update_fulfill_htlcs.len(), 1);
1077 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]);
1078 commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
1080 let events = nodes[0].node.get_and_clear_pending_events();
1081 assert_eq!(events.len(), 1);
1083 Event::PaymentSent { ref payment_preimage } => {
1084 assert_eq!(our_payment_preimage, *payment_preimage);
1086 _ => panic!("Unexpected event"),
1089 let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
1091 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
1092 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
1093 assert!(node_1_closing_signed.is_some());
1096 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
1097 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
1099 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1100 let node_0_2nd_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
1101 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1102 if recv_count == 0 {
1103 // If all closing_signeds weren't delivered we can just resume where we left off...
1104 let node_1_2nd_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
1106 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_2nd_reestablish);
1107 let node_0_3rd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
1108 assert!(node_0_2nd_shutdown == node_0_3rd_shutdown);
1110 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_2nd_reestablish);
1111 let node_1_3rd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
1112 assert!(node_1_3rd_shutdown == node_1_2nd_shutdown);
1114 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_3rd_shutdown);
1115 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1117 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_3rd_shutdown);
1118 let node_0_2nd_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
1119 assert!(node_0_closing_signed == node_0_2nd_closing_signed);
1121 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed);
1122 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
1123 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap());
1124 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
1125 assert!(node_0_none.is_none());
1127 // If one node, however, received + responded with an identical closing_signed we end
1128 // up erroring and node[0] will try to broadcast its own latest commitment transaction.
1129 // There isn't really anything better we can do simply, but in the future we might
1130 // explore storing a set of recently-closed channels that got disconnected during
1131 // closing_signed and avoiding broadcasting local commitment txn for some timeout to
1132 // give our counterparty enough time to (potentially) broadcast a cooperative closing
1134 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1136 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_2nd_reestablish);
1137 let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
1138 assert_eq!(msg_events.len(), 1);
1139 if let MessageSendEvent::HandleError { ref action, .. } = msg_events[0] {
1141 &ErrorAction::SendErrorMessage { ref msg } => {
1142 nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msg);
1143 assert_eq!(msg.channel_id, chan_1.2);
1145 _ => panic!("Unexpected event!"),
1147 } else { panic!("Needed SendErrorMessage close"); }
1149 // get_closing_signed_broadcast usually eats the BroadcastChannelUpdate for us and
1150 // checks it, but in this case nodes[0] didn't ever get a chance to receive a
1151 // closing_signed so we do it ourselves
1152 check_closed_broadcast!(nodes[0], false);
1153 check_added_monitors!(nodes[0], 1);
1156 assert!(nodes[0].node.list_channels().is_empty());
1158 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
1159 nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
1160 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
1161 assert!(nodes[1].node.list_channels().is_empty());
1162 assert!(nodes[2].node.list_channels().is_empty());
1166 fn test_shutdown_rebroadcast() {
1167 do_test_shutdown_rebroadcast(0);
1168 do_test_shutdown_rebroadcast(1);
1169 do_test_shutdown_rebroadcast(2);
1173 fn fake_network_test() {
1174 // Simple test which builds a network of ChannelManagers, connects them to each other, and
1175 // tests that payments get routed and transactions broadcast in semi-reasonable ways.
1176 let chanmon_cfgs = create_chanmon_cfgs(4);
1177 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
1178 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
1179 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
1181 // Create some initial channels
1182 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
1183 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
1184 let chan_3 = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known());
1186 // Rebalance the network a bit by relaying one payment through all the channels...
1187 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000, 8_000_000);
1188 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000, 8_000_000);
1189 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000, 8_000_000);
1190 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000, 8_000_000);
1192 // Send some more payments
1193 send_payment(&nodes[1], &vec!(&nodes[2], &nodes[3])[..], 1000000, 1_000_000);
1194 send_payment(&nodes[3], &vec!(&nodes[2], &nodes[1], &nodes[0])[..], 1000000, 1_000_000);
1195 send_payment(&nodes[3], &vec!(&nodes[2], &nodes[1])[..], 1000000, 1_000_000);
1197 // Test failure packets
1198 let payment_hash_1 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 1000000).1;
1199 fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], payment_hash_1);
1201 // Add a new channel that skips 3
1202 let chan_4 = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known());
1204 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 1000000, 1_000_000);
1205 send_payment(&nodes[2], &vec!(&nodes[3])[..], 1000000, 1_000_000);
1206 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000, 8_000_000);
1207 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000, 8_000_000);
1208 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000, 8_000_000);
1209 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000, 8_000_000);
1210 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000, 8_000_000);
1212 // Do some rebalance loop payments, simultaneously
1213 let mut hops = Vec::with_capacity(3);
1214 hops.push(RouteHop {
1215 pubkey: nodes[2].node.get_our_node_id(),
1216 node_features: NodeFeatures::empty(),
1217 short_channel_id: chan_2.0.contents.short_channel_id,
1218 channel_features: ChannelFeatures::empty(),
1220 cltv_expiry_delta: chan_3.0.contents.cltv_expiry_delta as u32
1222 hops.push(RouteHop {
1223 pubkey: nodes[3].node.get_our_node_id(),
1224 node_features: NodeFeatures::empty(),
1225 short_channel_id: chan_3.0.contents.short_channel_id,
1226 channel_features: ChannelFeatures::empty(),
1228 cltv_expiry_delta: chan_4.1.contents.cltv_expiry_delta as u32
1230 hops.push(RouteHop {
1231 pubkey: nodes[1].node.get_our_node_id(),
1232 node_features: NodeFeatures::empty(),
1233 short_channel_id: chan_4.0.contents.short_channel_id,
1234 channel_features: ChannelFeatures::empty(),
1236 cltv_expiry_delta: TEST_FINAL_CLTV,
1238 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;
1239 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;
1240 let payment_preimage_1 = send_along_route(&nodes[1], Route { paths: vec![hops] }, &vec!(&nodes[2], &nodes[3], &nodes[1])[..], 1000000).0;
1242 let mut hops = Vec::with_capacity(3);
1243 hops.push(RouteHop {
1244 pubkey: nodes[3].node.get_our_node_id(),
1245 node_features: NodeFeatures::empty(),
1246 short_channel_id: chan_4.0.contents.short_channel_id,
1247 channel_features: ChannelFeatures::empty(),
1249 cltv_expiry_delta: chan_3.1.contents.cltv_expiry_delta as u32
1251 hops.push(RouteHop {
1252 pubkey: nodes[2].node.get_our_node_id(),
1253 node_features: NodeFeatures::empty(),
1254 short_channel_id: chan_3.0.contents.short_channel_id,
1255 channel_features: ChannelFeatures::empty(),
1257 cltv_expiry_delta: chan_2.1.contents.cltv_expiry_delta as u32
1259 hops.push(RouteHop {
1260 pubkey: nodes[1].node.get_our_node_id(),
1261 node_features: NodeFeatures::empty(),
1262 short_channel_id: chan_2.0.contents.short_channel_id,
1263 channel_features: ChannelFeatures::empty(),
1265 cltv_expiry_delta: TEST_FINAL_CLTV,
1267 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;
1268 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;
1269 let payment_hash_2 = send_along_route(&nodes[1], Route { paths: vec![hops] }, &vec!(&nodes[3], &nodes[2], &nodes[1])[..], 1000000).1;
1271 // Claim the rebalances...
1272 fail_payment(&nodes[1], &vec!(&nodes[3], &nodes[2], &nodes[1])[..], payment_hash_2);
1273 claim_payment(&nodes[1], &vec!(&nodes[2], &nodes[3], &nodes[1])[..], payment_preimage_1, 1_000_000);
1275 // Add a duplicate new channel from 2 to 4
1276 let chan_5 = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known());
1278 // Send some payments across both channels
1279 let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0;
1280 let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0;
1281 let payment_preimage_5 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0;
1284 route_over_limit(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000);
1285 let events = nodes[0].node.get_and_clear_pending_msg_events();
1286 assert_eq!(events.len(), 0);
1287 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);
1289 //TODO: Test that routes work again here as we've been notified that the channel is full
1291 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_3, 3_000_000);
1292 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_4, 3_000_000);
1293 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_5, 3_000_000);
1295 // Close down the channels...
1296 close_channel(&nodes[0], &nodes[1], &chan_1.2, chan_1.3, true);
1297 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, false);
1298 close_channel(&nodes[2], &nodes[3], &chan_3.2, chan_3.3, true);
1299 close_channel(&nodes[1], &nodes[3], &chan_4.2, chan_4.3, false);
1300 close_channel(&nodes[1], &nodes[3], &chan_5.2, chan_5.3, false);
1304 fn holding_cell_htlc_counting() {
1305 // Tests that HTLCs in the holding cell count towards the pending HTLC limits on outbound HTLCs
1306 // to ensure we don't end up with HTLCs sitting around in our holding cell for several
1307 // commitment dance rounds.
1308 let chanmon_cfgs = create_chanmon_cfgs(3);
1309 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1310 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1311 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1312 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
1313 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
1314 let logger = test_utils::TestLogger::new();
1316 let mut payments = Vec::new();
1317 for _ in 0..::ln::channel::OUR_MAX_HTLCS {
1318 let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[0]);
1319 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
1320 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(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
1321 nodes[1].node.send_payment(&route, payment_hash, &None).unwrap();
1322 payments.push((payment_preimage, payment_hash));
1324 check_added_monitors!(nodes[1], 1);
1326 let mut events = nodes[1].node.get_and_clear_pending_msg_events();
1327 assert_eq!(events.len(), 1);
1328 let initial_payment_event = SendEvent::from_event(events.pop().unwrap());
1329 assert_eq!(initial_payment_event.node_id, nodes[2].node.get_our_node_id());
1331 // There is now one HTLC in an outbound commitment transaction and (OUR_MAX_HTLCS - 1) HTLCs in
1332 // the holding cell waiting on B's RAA to send. At this point we should not be able to add
1334 let (_, payment_hash_1) = get_payment_preimage_hash!(nodes[0]);
1336 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
1337 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(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
1338 unwrap_send_err!(nodes[1].node.send_payment(&route, payment_hash_1, &None), true, APIError::ChannelUnavailable { ref err },
1339 assert!(regex::Regex::new(r"Cannot push more than their max accepted HTLCs \(\d+\)").unwrap().is_match(err)));
1340 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1341 nodes[1].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot push more than their max accepted HTLCs".to_string(), 1);
1344 // This should also be true if we try to forward a payment.
1345 let (_, payment_hash_2) = get_payment_preimage_hash!(nodes[0]);
1347 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1348 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(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
1349 nodes[0].node.send_payment(&route, payment_hash_2, &None).unwrap();
1350 check_added_monitors!(nodes[0], 1);
1353 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1354 assert_eq!(events.len(), 1);
1355 let payment_event = SendEvent::from_event(events.pop().unwrap());
1356 assert_eq!(payment_event.node_id, nodes[1].node.get_our_node_id());
1358 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
1359 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
1360 // We have to forward pending HTLCs twice - once tries to forward the payment forward (and
1361 // fails), the second will process the resulting failure and fail the HTLC backward.
1362 expect_pending_htlcs_forwardable!(nodes[1]);
1363 expect_pending_htlcs_forwardable!(nodes[1]);
1364 check_added_monitors!(nodes[1], 1);
1366 let bs_fail_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1367 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &bs_fail_updates.update_fail_htlcs[0]);
1368 commitment_signed_dance!(nodes[0], nodes[1], bs_fail_updates.commitment_signed, false, true);
1370 let events = nodes[0].node.get_and_clear_pending_msg_events();
1371 assert_eq!(events.len(), 1);
1373 MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelUpdateMessage { ref msg }} => {
1374 assert_eq!(msg.contents.short_channel_id, chan_2.0.contents.short_channel_id);
1376 _ => panic!("Unexpected event"),
1379 expect_payment_failed!(nodes[0], payment_hash_2, false);
1381 // Now forward all the pending HTLCs and claim them back
1382 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &initial_payment_event.msgs[0]);
1383 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &initial_payment_event.commitment_msg);
1384 check_added_monitors!(nodes[2], 1);
1386 let (bs_revoke_and_ack, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[2], nodes[1].node.get_our_node_id());
1387 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_revoke_and_ack);
1388 check_added_monitors!(nodes[1], 1);
1389 let as_updates = get_htlc_update_msgs!(nodes[1], nodes[2].node.get_our_node_id());
1391 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &bs_commitment_signed);
1392 check_added_monitors!(nodes[1], 1);
1393 let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
1395 for ref update in as_updates.update_add_htlcs.iter() {
1396 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), update);
1398 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &as_updates.commitment_signed);
1399 check_added_monitors!(nodes[2], 1);
1400 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa);
1401 check_added_monitors!(nodes[2], 1);
1402 let (bs_revoke_and_ack, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[2], nodes[1].node.get_our_node_id());
1404 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_revoke_and_ack);
1405 check_added_monitors!(nodes[1], 1);
1406 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &bs_commitment_signed);
1407 check_added_monitors!(nodes[1], 1);
1408 let as_final_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
1410 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_final_raa);
1411 check_added_monitors!(nodes[2], 1);
1413 expect_pending_htlcs_forwardable!(nodes[2]);
1415 let events = nodes[2].node.get_and_clear_pending_events();
1416 assert_eq!(events.len(), payments.len());
1417 for (event, &(_, ref hash)) in events.iter().zip(payments.iter()) {
1419 &Event::PaymentReceived { ref payment_hash, .. } => {
1420 assert_eq!(*payment_hash, *hash);
1422 _ => panic!("Unexpected event"),
1426 for (preimage, _) in payments.drain(..) {
1427 claim_payment(&nodes[1], &[&nodes[2]], preimage, 100_000);
1430 send_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1000000, 1_000_000);
1434 fn duplicate_htlc_test() {
1435 // Test that we accept duplicate payment_hash HTLCs across the network and that
1436 // claiming/failing them are all separate and don't affect each other
1437 let chanmon_cfgs = create_chanmon_cfgs(6);
1438 let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
1439 let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
1440 let mut nodes = create_network(6, &node_cfgs, &node_chanmgrs);
1442 // Create some initial channels to route via 3 to 4/5 from 0/1/2
1443 create_announced_chan_between_nodes(&nodes, 0, 3, InitFeatures::known(), InitFeatures::known());
1444 create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known());
1445 create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known());
1446 create_announced_chan_between_nodes(&nodes, 3, 4, InitFeatures::known(), InitFeatures::known());
1447 create_announced_chan_between_nodes(&nodes, 3, 5, InitFeatures::known(), InitFeatures::known());
1449 let (payment_preimage, payment_hash) = route_payment(&nodes[0], &vec!(&nodes[3], &nodes[4])[..], 1000000);
1451 *nodes[0].network_payment_count.borrow_mut() -= 1;
1452 assert_eq!(route_payment(&nodes[1], &vec!(&nodes[3])[..], 1000000).0, payment_preimage);
1454 *nodes[0].network_payment_count.borrow_mut() -= 1;
1455 assert_eq!(route_payment(&nodes[2], &vec!(&nodes[3], &nodes[5])[..], 1000000).0, payment_preimage);
1457 claim_payment(&nodes[0], &vec!(&nodes[3], &nodes[4])[..], payment_preimage, 1_000_000);
1458 fail_payment(&nodes[2], &vec!(&nodes[3], &nodes[5])[..], payment_hash);
1459 claim_payment(&nodes[1], &vec!(&nodes[3])[..], payment_preimage, 1_000_000);
1463 fn test_duplicate_htlc_different_direction_onchain() {
1464 // Test that ChannelMonitor doesn't generate 2 preimage txn
1465 // when we have 2 HTLCs with same preimage that go across a node
1466 // in opposite directions.
1467 let chanmon_cfgs = create_chanmon_cfgs(2);
1468 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1469 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1470 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1472 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
1473 let logger = test_utils::TestLogger::new();
1476 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
1478 let (payment_preimage, payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 900_000);
1480 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
1481 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(), None, &Vec::new(), 800_000, TEST_FINAL_CLTV, &logger).unwrap();
1482 send_along_route_with_hash(&nodes[1], route, &vec!(&nodes[0])[..], 800_000, payment_hash);
1484 // Provide preimage to node 0 by claiming payment
1485 nodes[0].node.claim_funds(payment_preimage, &None, 800_000);
1486 check_added_monitors!(nodes[0], 1);
1488 // Broadcast node 1 commitment txn
1489 let remote_txn = get_local_commitment_txn!(nodes[1], chan_1.2);
1491 assert_eq!(remote_txn[0].output.len(), 4); // 1 local, 1 remote, 1 htlc inbound, 1 htlc outbound
1492 let mut has_both_htlcs = 0; // check htlcs match ones committed
1493 for outp in remote_txn[0].output.iter() {
1494 if outp.value == 800_000 / 1000 {
1495 has_both_htlcs += 1;
1496 } else if outp.value == 900_000 / 1000 {
1497 has_both_htlcs += 1;
1500 assert_eq!(has_both_htlcs, 2);
1502 let header = BlockHeader { version: 0x2000_0000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
1503 connect_block(&nodes[0], &Block { header, txdata: vec![remote_txn[0].clone()] }, 1);
1504 check_added_monitors!(nodes[0], 1);
1506 // Check we only broadcast 1 timeout tx
1507 let claim_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
1508 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()) };
1509 assert_eq!(claim_txn.len(), 5);
1510 check_spends!(claim_txn[2], chan_1.3);
1511 check_spends!(claim_txn[3], claim_txn[2]);
1512 assert_eq!(htlc_pair.0.input.len(), 1);
1513 assert_eq!(htlc_pair.0.input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); // HTLC 1 <--> 0, preimage tx
1514 check_spends!(htlc_pair.0, remote_txn[0]);
1515 assert_eq!(htlc_pair.1.input.len(), 1);
1516 assert_eq!(htlc_pair.1.input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); // HTLC 0 <--> 1, timeout tx
1517 check_spends!(htlc_pair.1, remote_txn[0]);
1519 let events = nodes[0].node.get_and_clear_pending_msg_events();
1520 assert_eq!(events.len(), 2);
1523 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
1524 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, .. } } => {
1525 assert!(update_add_htlcs.is_empty());
1526 assert!(update_fail_htlcs.is_empty());
1527 assert_eq!(update_fulfill_htlcs.len(), 1);
1528 assert!(update_fail_malformed_htlcs.is_empty());
1529 assert_eq!(nodes[1].node.get_our_node_id(), *node_id);
1531 _ => panic!("Unexpected event"),
1537 fn test_basic_channel_reserve() {
1538 let chanmon_cfgs = create_chanmon_cfgs(2);
1539 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1540 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1541 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1542 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1543 let logger = test_utils::TestLogger::new();
1545 let chan_stat = get_channel_value_stat!(nodes[0], chan.2);
1546 let channel_reserve = chan_stat.channel_reserve_msat;
1548 // The 2* and +1 are for the fee spike reserve.
1549 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
1550 let commit_tx_fee = 2 * commit_tx_fee_msat(get_feerate!(nodes[0], chan.2), 1 + 1);
1551 let max_can_send = 5000000 - channel_reserve - commit_tx_fee;
1552 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1553 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(), None, &Vec::new(), max_can_send + 1, TEST_FINAL_CLTV, &logger).unwrap();
1554 let err = nodes[0].node.send_payment(&route, our_payment_hash, &None).err().unwrap();
1556 PaymentSendFailure::AllFailedRetrySafe(ref fails) => {
1558 &APIError::ChannelUnavailable{ref err} =>
1559 assert!(regex::Regex::new(r"Cannot send value that would put our balance under counterparty-announced channel reserve value \(\d+\)").unwrap().is_match(err)),
1560 _ => panic!("Unexpected error variant"),
1563 _ => panic!("Unexpected error variant"),
1565 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1566 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);
1568 send_payment(&nodes[0], &vec![&nodes[1]], max_can_send, max_can_send);
1572 fn test_fee_spike_violation_fails_htlc() {
1573 let chanmon_cfgs = create_chanmon_cfgs(2);
1574 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1575 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1576 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1577 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1578 let logger = test_utils::TestLogger::new();
1580 macro_rules! get_route_and_payment_hash {
1581 ($recv_value: expr) => {{
1582 let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[1]);
1583 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler.network_graph.read().unwrap();
1584 let route = get_route(&nodes[0].node.get_our_node_id(), net_graph_msg_handler, &nodes.last().unwrap().node.get_our_node_id(), None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
1585 (route, payment_hash, payment_preimage)
1589 let (route, payment_hash, _) = get_route_and_payment_hash!(3460001);
1590 // Need to manually create the update_add_htlc message to go around the channel reserve check in send_htlc()
1591 let secp_ctx = Secp256k1::new();
1592 let session_priv = SecretKey::from_slice(&[42; 32]).expect("RNG is bad!");
1594 let cur_height = nodes[1].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
1596 let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route.paths[0], &session_priv).unwrap();
1597 let (onion_payloads, htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route.paths[0], 3460001, &None, cur_height).unwrap();
1598 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &payment_hash);
1599 let msg = msgs::UpdateAddHTLC {
1602 amount_msat: htlc_msat,
1603 payment_hash: payment_hash,
1604 cltv_expiry: htlc_cltv,
1605 onion_routing_packet: onion_packet,
1608 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg);
1610 // Now manually create the commitment_signed message corresponding to the update_add
1611 // nodes[0] just sent. In the code for construction of this message, "local" refers
1612 // to the sender of the message, and "remote" refers to the receiver.
1614 let feerate_per_kw = get_feerate!(nodes[0], chan.2);
1616 const INITIAL_COMMITMENT_NUMBER: u64 = (1 << 48) - 1;
1618 // Get the EnforcingChannelKeys for each channel, which will be used to (1) get the keys
1619 // needed to sign the new commitment tx and (2) sign the new commitment tx.
1620 let (local_revocation_basepoint, local_htlc_basepoint, local_payment_point, local_secret, local_secret2) = {
1621 let chan_lock = nodes[0].node.channel_state.lock().unwrap();
1622 let local_chan = chan_lock.by_id.get(&chan.2).unwrap();
1623 let chan_keys = local_chan.get_keys();
1624 let pubkeys = chan_keys.pubkeys();
1625 (pubkeys.revocation_basepoint, pubkeys.htlc_basepoint, pubkeys.payment_point,
1626 chan_keys.release_commitment_secret(INITIAL_COMMITMENT_NUMBER), chan_keys.release_commitment_secret(INITIAL_COMMITMENT_NUMBER - 2))
1628 let (remote_delayed_payment_basepoint, remote_htlc_basepoint, remote_payment_point, remote_secret1) = {
1629 let chan_lock = nodes[1].node.channel_state.lock().unwrap();
1630 let remote_chan = chan_lock.by_id.get(&chan.2).unwrap();
1631 let chan_keys = remote_chan.get_keys();
1632 let pubkeys = chan_keys.pubkeys();
1633 (pubkeys.delayed_payment_basepoint, pubkeys.htlc_basepoint, pubkeys.payment_point,
1634 chan_keys.release_commitment_secret(INITIAL_COMMITMENT_NUMBER - 1))
1637 // Assemble the set of keys we can use for signatures for our commitment_signed message.
1638 let commitment_secret = SecretKey::from_slice(&remote_secret1).unwrap();
1639 let per_commitment_point = PublicKey::from_secret_key(&secp_ctx, &commitment_secret);
1640 let commit_tx_keys = chan_utils::TxCreationKeys::derive_new(&secp_ctx, &per_commitment_point, &remote_delayed_payment_basepoint,
1641 &remote_htlc_basepoint, &local_revocation_basepoint, &local_htlc_basepoint).unwrap();
1643 // Build the remote commitment transaction so we can sign it, and then later use the
1644 // signature for the commitment_signed message.
1645 let local_chan_balance = 1313;
1646 let static_payment_pk = local_payment_point.serialize();
1647 let remote_commit_tx_output = TxOut {
1648 script_pubkey: Builder::new().push_opcode(opcodes::all::OP_PUSHBYTES_0)
1649 .push_slice(&WPubkeyHash::hash(&static_payment_pk)[..])
1651 value: local_chan_balance as u64
1654 let local_commit_tx_output = TxOut {
1655 script_pubkey: chan_utils::get_revokeable_redeemscript(&commit_tx_keys.revocation_key,
1657 &commit_tx_keys.broadcaster_delayed_payment_key).to_v0_p2wsh(),
1661 let accepted_htlc_info = chan_utils::HTLCOutputInCommitment {
1663 amount_msat: 3460001,
1664 cltv_expiry: htlc_cltv,
1665 payment_hash: payment_hash,
1666 transaction_output_index: Some(1),
1669 let htlc_output = TxOut {
1670 script_pubkey: chan_utils::get_htlc_redeemscript(&accepted_htlc_info, &commit_tx_keys).to_v0_p2wsh(),
1671 value: 3460001 / 1000
1674 let commit_tx_obscure_factor = {
1675 let mut sha = Sha256::engine();
1676 let remote_payment_point = &remote_payment_point.serialize();
1677 sha.input(&local_payment_point.serialize());
1678 sha.input(remote_payment_point);
1679 let res = Sha256::from_engine(sha).into_inner();
1681 ((res[26] as u64) << 5*8) |
1682 ((res[27] as u64) << 4*8) |
1683 ((res[28] as u64) << 3*8) |
1684 ((res[29] as u64) << 2*8) |
1685 ((res[30] as u64) << 1*8) |
1686 ((res[31] as u64) << 0*8)
1688 let commitment_number = 1;
1689 let obscured_commitment_transaction_number = commit_tx_obscure_factor ^ commitment_number;
1690 let lock_time = ((0x20 as u32) << 8*3) | ((obscured_commitment_transaction_number & 0xffffffu64) as u32);
1692 previous_output: BitcoinOutPoint { txid: chan.3.txid(), vout: 0 },
1693 script_sig: Script::new(),
1694 sequence: ((0x80 as u32) << 8*3) | ((obscured_commitment_transaction_number >> 3*8) as u32),
1695 witness: Vec::new(),
1698 let commit_tx = Transaction {
1702 output: vec![remote_commit_tx_output, htlc_output, local_commit_tx_output],
1705 let local_chan_lock = nodes[0].node.channel_state.lock().unwrap();
1706 let local_chan = local_chan_lock.by_id.get(&chan.2).unwrap();
1707 let local_chan_keys = local_chan.get_keys();
1708 let pre_commit_tx_keys = PreCalculatedTxCreationKeys::new(commit_tx_keys);
1709 local_chan_keys.sign_counterparty_commitment(feerate_per_kw, &commit_tx, &pre_commit_tx_keys, &[&accepted_htlc_info], &secp_ctx).unwrap()
1712 let commit_signed_msg = msgs::CommitmentSigned {
1715 htlc_signatures: res.1
1718 // Send the commitment_signed message to the nodes[1].
1719 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &commit_signed_msg);
1720 let _ = nodes[1].node.get_and_clear_pending_msg_events();
1722 // Send the RAA to nodes[1].
1723 let per_commitment_secret = local_secret;
1724 let next_secret = SecretKey::from_slice(&local_secret2).unwrap();
1725 let next_per_commitment_point = PublicKey::from_secret_key(&secp_ctx, &next_secret);
1726 let raa_msg = msgs::RevokeAndACK{ channel_id: chan.2, per_commitment_secret, next_per_commitment_point};
1727 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &raa_msg);
1729 let events = nodes[1].node.get_and_clear_pending_msg_events();
1730 assert_eq!(events.len(), 1);
1731 // Make sure the HTLC failed in the way we expect.
1733 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fail_htlcs, .. }, .. } => {
1734 assert_eq!(update_fail_htlcs.len(), 1);
1735 update_fail_htlcs[0].clone()
1737 _ => panic!("Unexpected event"),
1739 nodes[1].logger.assert_log("lightning::ln::channel".to_string(), "Attempting to fail HTLC due to fee spike buffer violation".to_string(), 1);
1741 check_added_monitors!(nodes[1], 2);
1745 fn test_chan_reserve_violation_outbound_htlc_inbound_chan() {
1746 let mut chanmon_cfgs = create_chanmon_cfgs(2);
1747 // Set the fee rate for the channel very high, to the point where the fundee
1748 // sending any amount would result in a channel reserve violation. In this test
1749 // we check that we would be prevented from sending an HTLC in this situation.
1750 chanmon_cfgs[0].fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 6000 };
1751 chanmon_cfgs[1].fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 6000 };
1752 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1753 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1754 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1755 let _ = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1756 let logger = test_utils::TestLogger::new();
1758 macro_rules! get_route_and_payment_hash {
1759 ($recv_value: expr) => {{
1760 let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[1]);
1761 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
1762 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes.first().unwrap().node.get_our_node_id(), None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
1763 (route, payment_hash, payment_preimage)
1767 let (route, our_payment_hash, _) = get_route_and_payment_hash!(1000);
1768 unwrap_send_err!(nodes[1].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
1769 assert_eq!(err, "Cannot send value that would put counterparty balance under holder-announced channel reserve value"));
1770 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1771 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Cannot send value that would put counterparty balance under holder-announced channel reserve value".to_string(), 1);
1775 fn test_chan_reserve_violation_inbound_htlc_outbound_channel() {
1776 let mut chanmon_cfgs = create_chanmon_cfgs(2);
1777 // Set the fee rate for the channel very high, to the point where the funder
1778 // receiving 1 update_add_htlc would result in them closing the channel due
1779 // to channel reserve violation. This close could also happen if the fee went
1780 // up a more realistic amount, but many HTLCs were outstanding at the time of
1781 // the update_add_htlc.
1782 chanmon_cfgs[0].fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 6000 };
1783 chanmon_cfgs[1].fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 6000 };
1784 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1785 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1786 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1787 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1788 let logger = test_utils::TestLogger::new();
1790 macro_rules! get_route_and_payment_hash {
1791 ($recv_value: expr) => {{
1792 let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[1]);
1793 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1794 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes.first().unwrap().node.get_our_node_id(), None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
1795 (route, payment_hash, payment_preimage)
1799 let (route, payment_hash, _) = get_route_and_payment_hash!(1000);
1800 // Need to manually create the update_add_htlc message to go around the channel reserve check in send_htlc()
1801 let secp_ctx = Secp256k1::new();
1802 let session_priv = SecretKey::from_slice(&[42; 32]).unwrap();
1803 let cur_height = nodes[1].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
1804 let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route.paths[0], &session_priv).unwrap();
1805 let (onion_payloads, htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route.paths[0], 1000, &None, cur_height).unwrap();
1806 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &payment_hash);
1807 let msg = msgs::UpdateAddHTLC {
1810 amount_msat: htlc_msat + 1,
1811 payment_hash: payment_hash,
1812 cltv_expiry: htlc_cltv,
1813 onion_routing_packet: onion_packet,
1816 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &msg);
1817 // Check that the payment failed and the channel is closed in response to the malicious UpdateAdd.
1818 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);
1819 assert_eq!(nodes[0].node.list_channels().len(), 0);
1820 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
1821 assert_eq!(err_msg.data, "Cannot accept HTLC that would put our balance under counterparty-announced channel reserve value");
1822 check_added_monitors!(nodes[0], 1);
1826 fn test_chan_reserve_violation_inbound_htlc_inbound_chan() {
1827 let chanmon_cfgs = create_chanmon_cfgs(3);
1828 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1829 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1830 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1831 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1832 let _ = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1833 let logger = test_utils::TestLogger::new();
1835 macro_rules! get_route_and_payment_hash {
1836 ($recv_value: expr) => {{
1837 let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[0]);
1838 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1839 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(), None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
1840 (route, payment_hash, payment_preimage)
1845 let total_routing_fee_msat = (nodes.len() - 2) as u64 * feemsat;
1846 let chan_stat = get_channel_value_stat!(nodes[0], chan.2);
1847 let feerate = get_feerate!(nodes[0], chan.2);
1849 // Add a 2* and +1 for the fee spike reserve.
1850 let commit_tx_fee_2_htlc = 2*commit_tx_fee_msat(feerate, 2 + 1);
1851 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;
1852 let amt_msat_1 = recv_value_1 + total_routing_fee_msat;
1854 // Add a pending HTLC.
1855 let (route_1, our_payment_hash_1, _) = get_route_and_payment_hash!(amt_msat_1);
1856 let payment_event_1 = {
1857 nodes[0].node.send_payment(&route_1, our_payment_hash_1, &None).unwrap();
1858 check_added_monitors!(nodes[0], 1);
1860 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1861 assert_eq!(events.len(), 1);
1862 SendEvent::from_event(events.remove(0))
1864 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event_1.msgs[0]);
1866 // Attempt to trigger a channel reserve violation --> payment failure.
1867 let commit_tx_fee_2_htlcs = commit_tx_fee_msat(feerate, 2);
1868 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;
1869 let amt_msat_2 = recv_value_2 + total_routing_fee_msat;
1870 let (route_2, _, _) = get_route_and_payment_hash!(amt_msat_2);
1872 // Need to manually create the update_add_htlc message to go around the channel reserve check in send_htlc()
1873 let secp_ctx = Secp256k1::new();
1874 let session_priv = SecretKey::from_slice(&[42; 32]).unwrap();
1875 let cur_height = nodes[0].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
1876 let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route_2.paths[0], &session_priv).unwrap();
1877 let (onion_payloads, htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route_2.paths[0], recv_value_2, &None, cur_height).unwrap();
1878 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &our_payment_hash_1);
1879 let msg = msgs::UpdateAddHTLC {
1882 amount_msat: htlc_msat + 1,
1883 payment_hash: our_payment_hash_1,
1884 cltv_expiry: htlc_cltv,
1885 onion_routing_packet: onion_packet,
1888 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg);
1889 // Check that the payment failed and the channel is closed in response to the malicious UpdateAdd.
1890 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Remote HTLC add would put them under remote reserve value".to_string(), 1);
1891 assert_eq!(nodes[1].node.list_channels().len(), 1);
1892 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
1893 assert_eq!(err_msg.data, "Remote HTLC add would put them under remote reserve value");
1894 check_added_monitors!(nodes[1], 1);
1898 fn test_inbound_outbound_capacity_is_not_zero() {
1899 let chanmon_cfgs = create_chanmon_cfgs(2);
1900 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1901 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1902 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1903 let _ = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1904 let channels0 = node_chanmgrs[0].list_channels();
1905 let channels1 = node_chanmgrs[1].list_channels();
1906 assert_eq!(channels0.len(), 1);
1907 assert_eq!(channels1.len(), 1);
1909 assert_eq!(channels0[0].inbound_capacity_msat, 95000000);
1910 assert_eq!(channels1[0].outbound_capacity_msat, 95000000);
1912 assert_eq!(channels0[0].outbound_capacity_msat, 100000 * 1000 - 95000000);
1913 assert_eq!(channels1[0].inbound_capacity_msat, 100000 * 1000 - 95000000);
1916 fn commit_tx_fee_msat(feerate: u32, num_htlcs: u64) -> u64 {
1917 (COMMITMENT_TX_BASE_WEIGHT + num_htlcs * COMMITMENT_TX_WEIGHT_PER_HTLC) * feerate as u64 / 1000 * 1000
1921 fn test_channel_reserve_holding_cell_htlcs() {
1922 let chanmon_cfgs = create_chanmon_cfgs(3);
1923 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1924 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1925 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1926 let chan_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 190000, 1001, InitFeatures::known(), InitFeatures::known());
1927 let chan_2 = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 190000, 1001, InitFeatures::known(), InitFeatures::known());
1928 let logger = test_utils::TestLogger::new();
1930 let mut stat01 = get_channel_value_stat!(nodes[0], chan_1.2);
1931 let mut stat11 = get_channel_value_stat!(nodes[1], chan_1.2);
1933 let mut stat12 = get_channel_value_stat!(nodes[1], chan_2.2);
1934 let mut stat22 = get_channel_value_stat!(nodes[2], chan_2.2);
1936 macro_rules! get_route_and_payment_hash {
1937 ($recv_value: expr) => {{
1938 let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[0]);
1939 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1940 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(), None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
1941 (route, payment_hash, payment_preimage)
1945 macro_rules! expect_forward {
1947 let mut events = $node.node.get_and_clear_pending_msg_events();
1948 assert_eq!(events.len(), 1);
1949 check_added_monitors!($node, 1);
1950 let payment_event = SendEvent::from_event(events.remove(0));
1955 let feemsat = 239; // somehow we know?
1956 let total_fee_msat = (nodes.len() - 2) as u64 * feemsat;
1957 let feerate = get_feerate!(nodes[0], chan_1.2);
1959 let recv_value_0 = stat01.counterparty_max_htlc_value_in_flight_msat - total_fee_msat;
1961 // attempt to send amt_msat > their_max_htlc_value_in_flight_msat
1963 let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_0 + 1);
1964 assert!(route.paths[0].iter().rev().skip(1).all(|h| h.fee_msat == feemsat));
1965 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
1966 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)));
1967 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1968 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);
1971 // channel reserve is bigger than their_max_htlc_value_in_flight_msat so loop to deplete
1972 // nodes[0]'s wealth
1974 let amt_msat = recv_value_0 + total_fee_msat;
1975 // 3 for the 3 HTLCs that will be sent, 2* and +1 for the fee spike reserve.
1976 // Also, ensure that each payment has enough to be over the dust limit to
1977 // ensure it'll be included in each commit tx fee calculation.
1978 let commit_tx_fee_all_htlcs = 2*commit_tx_fee_msat(feerate, 3 + 1);
1979 let ensure_htlc_amounts_above_dust_buffer = 3 * (stat01.counterparty_dust_limit_msat + 1000);
1980 if stat01.value_to_self_msat < stat01.channel_reserve_msat + commit_tx_fee_all_htlcs + ensure_htlc_amounts_above_dust_buffer + amt_msat {
1983 send_payment(&nodes[0], &vec![&nodes[1], &nodes[2]][..], recv_value_0, recv_value_0);
1985 let (stat01_, stat11_, stat12_, stat22_) = (
1986 get_channel_value_stat!(nodes[0], chan_1.2),
1987 get_channel_value_stat!(nodes[1], chan_1.2),
1988 get_channel_value_stat!(nodes[1], chan_2.2),
1989 get_channel_value_stat!(nodes[2], chan_2.2),
1992 assert_eq!(stat01_.value_to_self_msat, stat01.value_to_self_msat - amt_msat);
1993 assert_eq!(stat11_.value_to_self_msat, stat11.value_to_self_msat + amt_msat);
1994 assert_eq!(stat12_.value_to_self_msat, stat12.value_to_self_msat - (amt_msat - feemsat));
1995 assert_eq!(stat22_.value_to_self_msat, stat22.value_to_self_msat + (amt_msat - feemsat));
1996 stat01 = stat01_; stat11 = stat11_; stat12 = stat12_; stat22 = stat22_;
1999 // adding pending output.
2000 // 2* and +1 HTLCs on the commit tx fee for the fee spike reserve.
2001 // The reason we're dividing by two here is as follows: the dividend is the total outbound liquidity
2002 // after fees, the channel reserve, and the fee spike buffer are removed. We eventually want to
2003 // divide this quantity into 3 portions, that will each be sent in an HTLC. This allows us
2004 // to test channel channel reserve policy at the edges of what amount is sendable, i.e.
2005 // cases where 1 msat over X amount will cause a payment failure, but anything less than
2006 // that can be sent successfully. So, dividing by two is a somewhat arbitrary way of getting
2007 // the amount of the first of these aforementioned 3 payments. The reason we split into 3 payments
2008 // is to test the behavior of the holding cell with respect to channel reserve and commit tx fee
2010 let commit_tx_fee_2_htlcs = 2*commit_tx_fee_msat(feerate, 2 + 1);
2011 let recv_value_1 = (stat01.value_to_self_msat - stat01.channel_reserve_msat - total_fee_msat - commit_tx_fee_2_htlcs)/2;
2012 let amt_msat_1 = recv_value_1 + total_fee_msat;
2014 let (route_1, our_payment_hash_1, our_payment_preimage_1) = get_route_and_payment_hash!(recv_value_1);
2015 let payment_event_1 = {
2016 nodes[0].node.send_payment(&route_1, our_payment_hash_1, &None).unwrap();
2017 check_added_monitors!(nodes[0], 1);
2019 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
2020 assert_eq!(events.len(), 1);
2021 SendEvent::from_event(events.remove(0))
2023 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event_1.msgs[0]);
2025 // channel reserve test with htlc pending output > 0
2026 let recv_value_2 = stat01.value_to_self_msat - amt_msat_1 - stat01.channel_reserve_msat - total_fee_msat - commit_tx_fee_2_htlcs;
2028 let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_2 + 1);
2029 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
2030 assert!(regex::Regex::new(r"Cannot send value that would put our balance under counterparty-announced channel reserve value \(\d+\)").unwrap().is_match(err)));
2031 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2034 // split the rest to test holding cell
2035 let commit_tx_fee_3_htlcs = 2*commit_tx_fee_msat(feerate, 3 + 1);
2036 let additional_htlc_cost_msat = commit_tx_fee_3_htlcs - commit_tx_fee_2_htlcs;
2037 let recv_value_21 = recv_value_2/2 - additional_htlc_cost_msat/2;
2038 let recv_value_22 = recv_value_2 - recv_value_21 - total_fee_msat - additional_htlc_cost_msat;
2040 let stat = get_channel_value_stat!(nodes[0], chan_1.2);
2041 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);
2044 // now see if they go through on both sides
2045 let (route_21, our_payment_hash_21, our_payment_preimage_21) = get_route_and_payment_hash!(recv_value_21);
2046 // but this will stuck in the holding cell
2047 nodes[0].node.send_payment(&route_21, our_payment_hash_21, &None).unwrap();
2048 check_added_monitors!(nodes[0], 0);
2049 let events = nodes[0].node.get_and_clear_pending_events();
2050 assert_eq!(events.len(), 0);
2052 // test with outbound holding cell amount > 0
2054 let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_22+1);
2055 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
2056 assert!(regex::Regex::new(r"Cannot send value that would put our balance under counterparty-announced channel reserve value \(\d+\)").unwrap().is_match(err)));
2057 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2058 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);
2061 let (route_22, our_payment_hash_22, our_payment_preimage_22) = get_route_and_payment_hash!(recv_value_22);
2062 // this will also stuck in the holding cell
2063 nodes[0].node.send_payment(&route_22, our_payment_hash_22, &None).unwrap();
2064 check_added_monitors!(nodes[0], 0);
2065 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
2066 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2068 // flush the pending htlc
2069 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event_1.commitment_msg);
2070 let (as_revoke_and_ack, as_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
2071 check_added_monitors!(nodes[1], 1);
2073 // the pending htlc should be promoted to committed
2074 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_revoke_and_ack);
2075 check_added_monitors!(nodes[0], 1);
2076 let commitment_update_2 = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2078 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &as_commitment_signed);
2079 let bs_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2080 // No commitment_signed so get_event_msg's assert(len == 1) passes
2081 check_added_monitors!(nodes[0], 1);
2083 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &bs_revoke_and_ack);
2084 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2085 check_added_monitors!(nodes[1], 1);
2087 expect_pending_htlcs_forwardable!(nodes[1]);
2089 let ref payment_event_11 = expect_forward!(nodes[1]);
2090 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_11.msgs[0]);
2091 commitment_signed_dance!(nodes[2], nodes[1], payment_event_11.commitment_msg, false);
2093 expect_pending_htlcs_forwardable!(nodes[2]);
2094 expect_payment_received!(nodes[2], our_payment_hash_1, recv_value_1);
2096 // flush the htlcs in the holding cell
2097 assert_eq!(commitment_update_2.update_add_htlcs.len(), 2);
2098 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &commitment_update_2.update_add_htlcs[0]);
2099 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &commitment_update_2.update_add_htlcs[1]);
2100 commitment_signed_dance!(nodes[1], nodes[0], &commitment_update_2.commitment_signed, false);
2101 expect_pending_htlcs_forwardable!(nodes[1]);
2103 let ref payment_event_3 = expect_forward!(nodes[1]);
2104 assert_eq!(payment_event_3.msgs.len(), 2);
2105 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_3.msgs[0]);
2106 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_3.msgs[1]);
2108 commitment_signed_dance!(nodes[2], nodes[1], &payment_event_3.commitment_msg, false);
2109 expect_pending_htlcs_forwardable!(nodes[2]);
2111 let events = nodes[2].node.get_and_clear_pending_events();
2112 assert_eq!(events.len(), 2);
2114 Event::PaymentReceived { ref payment_hash, ref payment_secret, amt } => {
2115 assert_eq!(our_payment_hash_21, *payment_hash);
2116 assert_eq!(*payment_secret, None);
2117 assert_eq!(recv_value_21, amt);
2119 _ => panic!("Unexpected event"),
2122 Event::PaymentReceived { ref payment_hash, ref payment_secret, amt } => {
2123 assert_eq!(our_payment_hash_22, *payment_hash);
2124 assert_eq!(None, *payment_secret);
2125 assert_eq!(recv_value_22, amt);
2127 _ => panic!("Unexpected event"),
2130 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_1, recv_value_1);
2131 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_21, recv_value_21);
2132 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_22, recv_value_22);
2134 let commit_tx_fee_0_htlcs = 2*commit_tx_fee_msat(feerate, 1);
2135 let recv_value_3 = commit_tx_fee_2_htlcs - commit_tx_fee_0_htlcs - total_fee_msat;
2137 let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_3 + 1);
2138 let err = nodes[0].node.send_payment(&route, our_payment_hash, &None).err().unwrap();
2140 PaymentSendFailure::AllFailedRetrySafe(ref fails) => {
2142 &APIError::ChannelUnavailable{ref err} =>
2143 assert!(regex::Regex::new(r"Cannot send value that would put our balance under counterparty-announced channel reserve value \(\d+\)").unwrap().is_match(err)),
2144 _ => panic!("Unexpected error variant"),
2147 _ => panic!("Unexpected error variant"),
2149 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2150 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(), 3);
2153 send_payment(&nodes[0], &vec![&nodes[1], &nodes[2]][..], recv_value_3, recv_value_3);
2155 let commit_tx_fee_1_htlc = 2*commit_tx_fee_msat(feerate, 1 + 1);
2156 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);
2157 let stat0 = get_channel_value_stat!(nodes[0], chan_1.2);
2158 assert_eq!(stat0.value_to_self_msat, expected_value_to_self);
2159 assert_eq!(stat0.value_to_self_msat, stat0.channel_reserve_msat + commit_tx_fee_1_htlc);
2161 let stat2 = get_channel_value_stat!(nodes[2], chan_2.2);
2162 assert_eq!(stat2.value_to_self_msat, stat22.value_to_self_msat + recv_value_1 + recv_value_21 + recv_value_22 + recv_value_3);
2166 fn channel_reserve_in_flight_removes() {
2167 // In cases where one side claims an HTLC, it thinks it has additional available funds that it
2168 // can send to its counterparty, but due to update ordering, the other side may not yet have
2169 // considered those HTLCs fully removed.
2170 // This tests that we don't count HTLCs which will not be included in the next remote
2171 // commitment transaction towards the reserve value (as it implies no commitment transaction
2172 // will be generated which violates the remote reserve value).
2173 // This was broken previously, and discovered by the chanmon_fail_consistency fuzz test.
2175 // * route two HTLCs from A to B (note that, at a high level, this test is checking that, when
2176 // you consider the values of both of these HTLCs, B may not send an HTLC back to A, but if
2177 // you only consider the value of the first HTLC, it may not),
2178 // * start routing a third HTLC from A to B,
2179 // * claim the first two HTLCs (though B will generate an update_fulfill for one, and put
2180 // the other claim in its holding cell, as it immediately goes into AwaitingRAA),
2181 // * deliver the first fulfill from B
2182 // * deliver the update_add and an RAA from A, resulting in B freeing the second holding cell
2184 // * deliver A's response CS and RAA.
2185 // This results in A having the second HTLC in AwaitingRemovedRemoteRevoke, but B having
2186 // removed it fully. B now has the push_msat plus the first two HTLCs in value.
2187 // * Now B happily sends another HTLC, potentially violating its reserve value from A's point
2188 // of view (if A counts the AwaitingRemovedRemoteRevoke HTLC).
2189 let chanmon_cfgs = create_chanmon_cfgs(2);
2190 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2191 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2192 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2193 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2194 let logger = test_utils::TestLogger::new();
2196 let b_chan_values = get_channel_value_stat!(nodes[1], chan_1.2);
2197 // Route the first two HTLCs.
2198 let (payment_preimage_1, _) = route_payment(&nodes[0], &[&nodes[1]], b_chan_values.channel_reserve_msat - b_chan_values.value_to_self_msat - 10000);
2199 let (payment_preimage_2, _) = route_payment(&nodes[0], &[&nodes[1]], 20000);
2201 // Start routing the third HTLC (this is just used to get everyone in the right state).
2202 let (payment_preimage_3, payment_hash_3) = get_payment_preimage_hash!(nodes[0]);
2204 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
2205 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(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
2206 nodes[0].node.send_payment(&route, payment_hash_3, &None).unwrap();
2207 check_added_monitors!(nodes[0], 1);
2208 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
2209 assert_eq!(events.len(), 1);
2210 SendEvent::from_event(events.remove(0))
2213 // Now claim both of the first two HTLCs on B's end, putting B in AwaitingRAA and generating an
2214 // initial fulfill/CS.
2215 assert!(nodes[1].node.claim_funds(payment_preimage_1, &None, b_chan_values.channel_reserve_msat - b_chan_values.value_to_self_msat - 10000));
2216 check_added_monitors!(nodes[1], 1);
2217 let bs_removes = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
2219 // This claim goes in B's holding cell, allowing us to have a pending B->A RAA which does not
2220 // remove the second HTLC when we send the HTLC back from B to A.
2221 assert!(nodes[1].node.claim_funds(payment_preimage_2, &None, 20000));
2222 check_added_monitors!(nodes[1], 1);
2223 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2225 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_removes.update_fulfill_htlcs[0]);
2226 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_removes.commitment_signed);
2227 check_added_monitors!(nodes[0], 1);
2228 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2229 expect_payment_sent!(nodes[0], payment_preimage_1);
2231 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_1.msgs[0]);
2232 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send_1.commitment_msg);
2233 check_added_monitors!(nodes[1], 1);
2234 // B is already AwaitingRAA, so cant generate a CS here
2235 let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2237 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
2238 check_added_monitors!(nodes[1], 1);
2239 let bs_cs = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
2241 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
2242 check_added_monitors!(nodes[0], 1);
2243 let as_cs = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2245 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_cs.commitment_signed);
2246 check_added_monitors!(nodes[1], 1);
2247 let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2249 // The second HTLCis removed, but as A is in AwaitingRAA it can't generate a CS here, so the
2250 // RAA that B generated above doesn't fully resolve the second HTLC from A's point of view.
2251 // However, the RAA A generates here *does* fully resolve the HTLC from B's point of view (as A
2252 // can no longer broadcast a commitment transaction with it and B has the preimage so can go
2253 // on-chain as necessary).
2254 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_cs.update_fulfill_htlcs[0]);
2255 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_cs.commitment_signed);
2256 check_added_monitors!(nodes[0], 1);
2257 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2258 expect_payment_sent!(nodes[0], payment_preimage_2);
2260 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
2261 check_added_monitors!(nodes[1], 1);
2262 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2264 expect_pending_htlcs_forwardable!(nodes[1]);
2265 expect_payment_received!(nodes[1], payment_hash_3, 100000);
2267 // Note that as this RAA was generated before the delivery of the update_fulfill it shouldn't
2268 // resolve the second HTLC from A's point of view.
2269 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
2270 check_added_monitors!(nodes[0], 1);
2271 let as_cs = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2273 // Now that B doesn't have the second RAA anymore, but A still does, send a payment from B back
2274 // to A to ensure that A doesn't count the almost-removed HTLC in update_add processing.
2275 let (payment_preimage_4, payment_hash_4) = get_payment_preimage_hash!(nodes[1]);
2277 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
2278 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(), None, &[], 10000, TEST_FINAL_CLTV, &logger).unwrap();
2279 nodes[1].node.send_payment(&route, payment_hash_4, &None).unwrap();
2280 check_added_monitors!(nodes[1], 1);
2281 let mut events = nodes[1].node.get_and_clear_pending_msg_events();
2282 assert_eq!(events.len(), 1);
2283 SendEvent::from_event(events.remove(0))
2286 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &send_2.msgs[0]);
2287 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &send_2.commitment_msg);
2288 check_added_monitors!(nodes[0], 1);
2289 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2291 // Now just resolve all the outstanding messages/HTLCs for completeness...
2293 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_cs.commitment_signed);
2294 check_added_monitors!(nodes[1], 1);
2295 let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2297 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
2298 check_added_monitors!(nodes[1], 1);
2300 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
2301 check_added_monitors!(nodes[0], 1);
2302 let as_cs = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2304 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_cs.commitment_signed);
2305 check_added_monitors!(nodes[1], 1);
2306 let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2308 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
2309 check_added_monitors!(nodes[0], 1);
2311 expect_pending_htlcs_forwardable!(nodes[0]);
2312 expect_payment_received!(nodes[0], payment_hash_4, 10000);
2314 claim_payment(&nodes[1], &[&nodes[0]], payment_preimage_4, 10_000);
2315 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_3, 100_000);
2319 fn channel_monitor_network_test() {
2320 // Simple test which builds a network of ChannelManagers, connects them to each other, and
2321 // tests that ChannelMonitor is able to recover from various states.
2322 let chanmon_cfgs = create_chanmon_cfgs(5);
2323 let node_cfgs = create_node_cfgs(5, &chanmon_cfgs);
2324 let node_chanmgrs = create_node_chanmgrs(5, &node_cfgs, &[None, None, None, None, None]);
2325 let nodes = create_network(5, &node_cfgs, &node_chanmgrs);
2327 // Create some initial channels
2328 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2329 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
2330 let chan_3 = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known());
2331 let chan_4 = create_announced_chan_between_nodes(&nodes, 3, 4, InitFeatures::known(), InitFeatures::known());
2333 // Rebalance the network a bit by relaying one payment through all the channels...
2334 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000, 8_000_000);
2335 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000, 8_000_000);
2336 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000, 8_000_000);
2337 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000, 8_000_000);
2339 // Simple case with no pending HTLCs:
2340 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), true);
2341 check_added_monitors!(nodes[1], 1);
2343 let mut node_txn = test_txn_broadcast(&nodes[1], &chan_1, None, HTLCType::NONE);
2344 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2345 connect_block(&nodes[0], &Block { header, txdata: vec![node_txn.drain(..).next().unwrap()] }, 1);
2346 check_added_monitors!(nodes[0], 1);
2347 test_txn_broadcast(&nodes[0], &chan_1, None, HTLCType::NONE);
2349 get_announce_close_broadcast_events(&nodes, 0, 1);
2350 assert_eq!(nodes[0].node.list_channels().len(), 0);
2351 assert_eq!(nodes[1].node.list_channels().len(), 1);
2353 // One pending HTLC is discarded by the force-close:
2354 let payment_preimage_1 = route_payment(&nodes[1], &vec!(&nodes[2], &nodes[3])[..], 3000000).0;
2356 // Simple case of one pending HTLC to HTLC-Timeout
2357 nodes[1].node.peer_disconnected(&nodes[2].node.get_our_node_id(), true);
2358 check_added_monitors!(nodes[1], 1);
2360 let mut node_txn = test_txn_broadcast(&nodes[1], &chan_2, None, HTLCType::TIMEOUT);
2361 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2362 connect_block(&nodes[2], &Block { header, txdata: vec![node_txn.drain(..).next().unwrap()] }, 1);
2363 check_added_monitors!(nodes[2], 1);
2364 test_txn_broadcast(&nodes[2], &chan_2, None, HTLCType::NONE);
2366 get_announce_close_broadcast_events(&nodes, 1, 2);
2367 assert_eq!(nodes[1].node.list_channels().len(), 0);
2368 assert_eq!(nodes[2].node.list_channels().len(), 1);
2370 macro_rules! claim_funds {
2371 ($node: expr, $prev_node: expr, $preimage: expr, $amount: expr) => {
2373 assert!($node.node.claim_funds($preimage, &None, $amount));
2374 check_added_monitors!($node, 1);
2376 let events = $node.node.get_and_clear_pending_msg_events();
2377 assert_eq!(events.len(), 1);
2379 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, .. } } => {
2380 assert!(update_add_htlcs.is_empty());
2381 assert!(update_fail_htlcs.is_empty());
2382 assert_eq!(*node_id, $prev_node.node.get_our_node_id());
2384 _ => panic!("Unexpected event"),
2390 // nodes[3] gets the preimage, but nodes[2] already disconnected, resulting in a nodes[2]
2391 // HTLC-Timeout and a nodes[3] claim against it (+ its own announces)
2392 nodes[2].node.peer_disconnected(&nodes[3].node.get_our_node_id(), true);
2393 check_added_monitors!(nodes[2], 1);
2394 let node2_commitment_txid;
2396 let node_txn = test_txn_broadcast(&nodes[2], &chan_3, None, HTLCType::TIMEOUT);
2397 node2_commitment_txid = node_txn[0].txid();
2399 // Claim the payment on nodes[3], giving it knowledge of the preimage
2400 claim_funds!(nodes[3], nodes[2], payment_preimage_1, 3_000_000);
2402 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2403 connect_block(&nodes[3], &Block { header, txdata: vec![node_txn[0].clone()] }, 1);
2404 check_added_monitors!(nodes[3], 1);
2406 check_preimage_claim(&nodes[3], &node_txn);
2408 get_announce_close_broadcast_events(&nodes, 2, 3);
2409 assert_eq!(nodes[2].node.list_channels().len(), 0);
2410 assert_eq!(nodes[3].node.list_channels().len(), 1);
2412 { // Cheat and reset nodes[4]'s height to 1
2413 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2414 connect_block(&nodes[4], &Block { header, txdata: vec![] }, 1);
2417 assert_eq!(nodes[3].node.latest_block_height.load(Ordering::Acquire), 1);
2418 assert_eq!(nodes[4].node.latest_block_height.load(Ordering::Acquire), 1);
2419 // One pending HTLC to time out:
2420 let payment_preimage_2 = route_payment(&nodes[3], &vec!(&nodes[4])[..], 3000000).0;
2421 // CLTV expires at TEST_FINAL_CLTV + 1 (current height) + 1 (added in send_payment for
2424 let (close_chan_update_1, close_chan_update_2) = {
2425 let mut block = Block {
2426 header: BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
2429 connect_block(&nodes[3], &block, 2);
2430 for i in 3..TEST_FINAL_CLTV + 2 + LATENCY_GRACE_PERIOD_BLOCKS + 1 {
2432 header: BlockHeader { version: 0x20000000, prev_blockhash: block.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
2435 connect_block(&nodes[3], &block, i);
2437 let events = nodes[3].node.get_and_clear_pending_msg_events();
2438 assert_eq!(events.len(), 1);
2439 let close_chan_update_1 = match events[0] {
2440 MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
2443 _ => panic!("Unexpected event"),
2445 check_added_monitors!(nodes[3], 1);
2447 // Clear bumped claiming txn spending node 2 commitment tx. Bumped txn are generated after reaching some height timer.
2449 let mut node_txn = nodes[3].tx_broadcaster.txn_broadcasted.lock().unwrap();
2450 node_txn.retain(|tx| {
2451 if tx.input[0].previous_output.txid == node2_commitment_txid {
2457 let node_txn = test_txn_broadcast(&nodes[3], &chan_4, None, HTLCType::TIMEOUT);
2459 // Claim the payment on nodes[4], giving it knowledge of the preimage
2460 claim_funds!(nodes[4], nodes[3], payment_preimage_2, 3_000_000);
2463 header: BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
2467 connect_block(&nodes[4], &block, 2);
2468 for i in 3..TEST_FINAL_CLTV + 2 - CLTV_CLAIM_BUFFER + 1 {
2470 header: BlockHeader { version: 0x20000000, prev_blockhash: block.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
2473 connect_block(&nodes[4], &block, i);
2475 let events = nodes[4].node.get_and_clear_pending_msg_events();
2476 assert_eq!(events.len(), 1);
2477 let close_chan_update_2 = match events[0] {
2478 MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
2481 _ => panic!("Unexpected event"),
2483 check_added_monitors!(nodes[4], 1);
2484 test_txn_broadcast(&nodes[4], &chan_4, None, HTLCType::SUCCESS);
2487 header: BlockHeader { version: 0x20000000, prev_blockhash: block.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
2488 txdata: vec![node_txn[0].clone()],
2490 connect_block(&nodes[4], &block, TEST_FINAL_CLTV - 5);
2492 check_preimage_claim(&nodes[4], &node_txn);
2493 (close_chan_update_1, close_chan_update_2)
2495 nodes[3].net_graph_msg_handler.handle_channel_update(&close_chan_update_2).unwrap();
2496 nodes[4].net_graph_msg_handler.handle_channel_update(&close_chan_update_1).unwrap();
2497 assert_eq!(nodes[3].node.list_channels().len(), 0);
2498 assert_eq!(nodes[4].node.list_channels().len(), 0);
2502 fn test_justice_tx() {
2503 // Test justice txn built on revoked HTLC-Success tx, against both sides
2504 let mut alice_config = UserConfig::default();
2505 alice_config.channel_options.announced_channel = true;
2506 alice_config.peer_channel_config_limits.force_announced_channel_preference = false;
2507 alice_config.own_channel_config.our_to_self_delay = 6 * 24 * 5;
2508 let mut bob_config = UserConfig::default();
2509 bob_config.channel_options.announced_channel = true;
2510 bob_config.peer_channel_config_limits.force_announced_channel_preference = false;
2511 bob_config.own_channel_config.our_to_self_delay = 6 * 24 * 3;
2512 let user_cfgs = [Some(alice_config), Some(bob_config)];
2513 let chanmon_cfgs = create_chanmon_cfgs(2);
2514 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2515 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &user_cfgs);
2516 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2517 // Create some new channels:
2518 let chan_5 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2520 // A pending HTLC which will be revoked:
2521 let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
2522 // Get the will-be-revoked local txn from nodes[0]
2523 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_5.2);
2524 assert_eq!(revoked_local_txn.len(), 2); // First commitment tx, then HTLC tx
2525 assert_eq!(revoked_local_txn[0].input.len(), 1);
2526 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_5.3.txid());
2527 assert_eq!(revoked_local_txn[0].output.len(), 2); // Only HTLC and output back to 0 are present
2528 assert_eq!(revoked_local_txn[1].input.len(), 1);
2529 assert_eq!(revoked_local_txn[1].input[0].previous_output.txid, revoked_local_txn[0].txid());
2530 assert_eq!(revoked_local_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); // HTLC-Timeout
2531 // Revoke the old state
2532 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_3, 3_000_000);
2535 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2536 connect_block(&nodes[1], &Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
2538 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2539 assert_eq!(node_txn.len(), 2); // ChannelMonitor: penalty tx, ChannelManager: local commitment tx
2540 assert_eq!(node_txn[0].input.len(), 2); // We should claim the revoked output and the HTLC output
2542 check_spends!(node_txn[0], revoked_local_txn[0]);
2543 node_txn.swap_remove(0);
2544 node_txn.truncate(1);
2546 check_added_monitors!(nodes[1], 1);
2547 test_txn_broadcast(&nodes[1], &chan_5, None, HTLCType::NONE);
2549 connect_block(&nodes[0], &Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
2550 // Verify broadcast of revoked HTLC-timeout
2551 let node_txn = test_txn_broadcast(&nodes[0], &chan_5, Some(revoked_local_txn[0].clone()), HTLCType::TIMEOUT);
2552 header = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2553 check_added_monitors!(nodes[0], 1);
2554 // Broadcast revoked HTLC-timeout on node 1
2555 connect_block(&nodes[1], &Block { header, txdata: vec![node_txn[1].clone()] }, 1);
2556 test_revoked_htlc_claim_txn_broadcast(&nodes[1], node_txn[1].clone(), revoked_local_txn[0].clone());
2558 get_announce_close_broadcast_events(&nodes, 0, 1);
2560 assert_eq!(nodes[0].node.list_channels().len(), 0);
2561 assert_eq!(nodes[1].node.list_channels().len(), 0);
2563 // We test justice_tx build by A on B's revoked HTLC-Success tx
2564 // Create some new channels:
2565 let chan_6 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2567 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2571 // A pending HTLC which will be revoked:
2572 let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
2573 // Get the will-be-revoked local txn from B
2574 let revoked_local_txn = get_local_commitment_txn!(nodes[1], chan_6.2);
2575 assert_eq!(revoked_local_txn.len(), 1); // Only commitment tx
2576 assert_eq!(revoked_local_txn[0].input.len(), 1);
2577 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_6.3.txid());
2578 assert_eq!(revoked_local_txn[0].output.len(), 2); // Only HTLC and output back to A are present
2579 // Revoke the old state
2580 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_4, 3_000_000);
2582 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2583 connect_block(&nodes[0], &Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
2585 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
2586 assert_eq!(node_txn.len(), 2); //ChannelMonitor: penalty tx, ChannelManager: local commitment tx
2587 assert_eq!(node_txn[0].input.len(), 1); // We claim the received HTLC output
2589 check_spends!(node_txn[0], revoked_local_txn[0]);
2590 node_txn.swap_remove(0);
2592 check_added_monitors!(nodes[0], 1);
2593 test_txn_broadcast(&nodes[0], &chan_6, None, HTLCType::NONE);
2595 connect_block(&nodes[1], &Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
2596 let node_txn = test_txn_broadcast(&nodes[1], &chan_6, Some(revoked_local_txn[0].clone()), HTLCType::SUCCESS);
2597 header = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2598 check_added_monitors!(nodes[1], 1);
2599 connect_block(&nodes[0], &Block { header, txdata: vec![node_txn[1].clone()] }, 1);
2600 test_revoked_htlc_claim_txn_broadcast(&nodes[0], node_txn[1].clone(), revoked_local_txn[0].clone());
2602 get_announce_close_broadcast_events(&nodes, 0, 1);
2603 assert_eq!(nodes[0].node.list_channels().len(), 0);
2604 assert_eq!(nodes[1].node.list_channels().len(), 0);
2608 fn revoked_output_claim() {
2609 // Simple test to ensure a node will claim a revoked output when a stale remote commitment
2610 // transaction is broadcast by its counterparty
2611 let chanmon_cfgs = create_chanmon_cfgs(2);
2612 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2613 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2614 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2615 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2616 // node[0] is gonna to revoke an old state thus node[1] should be able to claim the revoked output
2617 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
2618 assert_eq!(revoked_local_txn.len(), 1);
2619 // Only output is the full channel value back to nodes[0]:
2620 assert_eq!(revoked_local_txn[0].output.len(), 1);
2621 // Send a payment through, updating everyone's latest commitment txn
2622 send_payment(&nodes[0], &vec!(&nodes[1])[..], 5000000, 5_000_000);
2624 // Inform nodes[1] that nodes[0] broadcast a stale tx
2625 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2626 connect_block(&nodes[1], &Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
2627 check_added_monitors!(nodes[1], 1);
2628 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2629 assert_eq!(node_txn.len(), 2); // ChannelMonitor: justice tx against revoked to_local output, ChannelManager: local commitment tx
2631 check_spends!(node_txn[0], revoked_local_txn[0]);
2632 check_spends!(node_txn[1], chan_1.3);
2634 // Inform nodes[0] that a watchtower cheated on its behalf, so it will force-close the chan
2635 connect_block(&nodes[0], &Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
2636 get_announce_close_broadcast_events(&nodes, 0, 1);
2637 check_added_monitors!(nodes[0], 1)
2641 fn claim_htlc_outputs_shared_tx() {
2642 // Node revoked old state, htlcs haven't time out yet, claim them in shared justice tx
2643 let chanmon_cfgs = create_chanmon_cfgs(2);
2644 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2645 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2646 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2648 // Create some new channel:
2649 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2651 // Rebalance the network to generate htlc in the two directions
2652 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
2653 // 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
2654 let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
2655 let (_payment_preimage_2, payment_hash_2) = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3000000);
2657 // Get the will-be-revoked local txn from node[0]
2658 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
2659 assert_eq!(revoked_local_txn.len(), 2); // commitment tx + 1 HTLC-Timeout tx
2660 assert_eq!(revoked_local_txn[0].input.len(), 1);
2661 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
2662 assert_eq!(revoked_local_txn[1].input.len(), 1);
2663 assert_eq!(revoked_local_txn[1].input[0].previous_output.txid, revoked_local_txn[0].txid());
2664 assert_eq!(revoked_local_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); // HTLC-Timeout
2665 check_spends!(revoked_local_txn[1], revoked_local_txn[0]);
2667 //Revoke the old state
2668 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_1, 3_000_000);
2671 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2672 connect_block(&nodes[0], &Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
2673 check_added_monitors!(nodes[0], 1);
2674 connect_block(&nodes[1], &Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
2675 check_added_monitors!(nodes[1], 1);
2676 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1, 1, true, header.block_hash());
2677 expect_payment_failed!(nodes[1], payment_hash_2, true);
2679 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2680 assert_eq!(node_txn.len(), 3); // ChannelMonitor: penalty tx, ChannelManager: local commitment + HTLC-timeout
2682 assert_eq!(node_txn[0].input.len(), 3); // Claim the revoked output + both revoked HTLC outputs
2683 check_spends!(node_txn[0], revoked_local_txn[0]);
2685 let mut witness_lens = BTreeSet::new();
2686 witness_lens.insert(node_txn[0].input[0].witness.last().unwrap().len());
2687 witness_lens.insert(node_txn[0].input[1].witness.last().unwrap().len());
2688 witness_lens.insert(node_txn[0].input[2].witness.last().unwrap().len());
2689 assert_eq!(witness_lens.len(), 3);
2690 assert_eq!(*witness_lens.iter().skip(0).next().unwrap(), 77); // revoked to_local
2691 assert_eq!(*witness_lens.iter().skip(1).next().unwrap(), OFFERED_HTLC_SCRIPT_WEIGHT); // revoked offered HTLC
2692 assert_eq!(*witness_lens.iter().skip(2).next().unwrap(), ACCEPTED_HTLC_SCRIPT_WEIGHT); // revoked received HTLC
2694 // Next nodes[1] broadcasts its current local tx state:
2695 assert_eq!(node_txn[1].input.len(), 1);
2696 assert_eq!(node_txn[1].input[0].previous_output.txid, chan_1.3.txid()); //Spending funding tx unique txouput, tx broadcasted by ChannelManager
2698 assert_eq!(node_txn[2].input.len(), 1);
2699 let witness_script = node_txn[2].clone().input[0].witness.pop().unwrap();
2700 assert_eq!(witness_script.len(), OFFERED_HTLC_SCRIPT_WEIGHT); //Spending an offered htlc output
2701 assert_eq!(node_txn[2].input[0].previous_output.txid, node_txn[1].txid());
2702 assert_ne!(node_txn[2].input[0].previous_output.txid, node_txn[0].input[0].previous_output.txid);
2703 assert_ne!(node_txn[2].input[0].previous_output.txid, node_txn[0].input[1].previous_output.txid);
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 claim_htlc_outputs_single_tx() {
2712 // Node revoked old state, htlcs have timed out, claim each of them in separated justice tx
2713 let chanmon_cfgs = create_chanmon_cfgs(2);
2714 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2715 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2716 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2718 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2720 // Rebalance the network to generate htlc in the two directions
2721 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
2722 // 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
2723 // time as two different claim transactions as we're gonna to timeout htlc with given a high current height
2724 let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
2725 let (_payment_preimage_2, payment_hash_2) = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3000000);
2727 // Get the will-be-revoked local txn from node[0]
2728 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
2730 //Revoke the old state
2731 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_1, 3_000_000);
2734 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2735 connect_block(&nodes[0], &Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 200);
2736 check_added_monitors!(nodes[0], 1);
2737 connect_block(&nodes[1], &Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 200);
2738 check_added_monitors!(nodes[1], 1);
2739 expect_pending_htlcs_forwardable_ignore!(nodes[0]);
2741 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1, 200, true, header.block_hash());
2742 expect_payment_failed!(nodes[1], payment_hash_2, true);
2744 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2745 assert_eq!(node_txn.len(), 9);
2746 // ChannelMonitor: justice tx revoked offered htlc, justice tx revoked received htlc, justice tx revoked to_local (3)
2747 // ChannelManager: local commmitment + local HTLC-timeout (2)
2748 // 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)
2749 // ChannelMonitor: local commitment + local HTLC-timeout (2)
2751 // Check the pair local commitment and HTLC-timeout broadcast due to HTLC expiration
2752 assert_eq!(node_txn[2].input.len(), 1);
2753 check_spends!(node_txn[2], chan_1.3);
2754 assert_eq!(node_txn[3].input.len(), 1);
2755 let witness_script = node_txn[3].input[0].witness.last().unwrap();
2756 assert_eq!(witness_script.len(), OFFERED_HTLC_SCRIPT_WEIGHT); //Spending an offered htlc output
2757 check_spends!(node_txn[3], node_txn[2]);
2759 // Justice transactions are indices 1-2-4
2760 assert_eq!(node_txn[0].input.len(), 1);
2761 assert_eq!(node_txn[1].input.len(), 1);
2762 assert_eq!(node_txn[4].input.len(), 1);
2764 check_spends!(node_txn[0], revoked_local_txn[0]);
2765 check_spends!(node_txn[1], revoked_local_txn[0]);
2766 check_spends!(node_txn[4], revoked_local_txn[0]);
2768 let mut witness_lens = BTreeSet::new();
2769 witness_lens.insert(node_txn[0].input[0].witness.last().unwrap().len());
2770 witness_lens.insert(node_txn[1].input[0].witness.last().unwrap().len());
2771 witness_lens.insert(node_txn[4].input[0].witness.last().unwrap().len());
2772 assert_eq!(witness_lens.len(), 3);
2773 assert_eq!(*witness_lens.iter().skip(0).next().unwrap(), 77); // revoked to_local
2774 assert_eq!(*witness_lens.iter().skip(1).next().unwrap(), OFFERED_HTLC_SCRIPT_WEIGHT); // revoked offered HTLC
2775 assert_eq!(*witness_lens.iter().skip(2).next().unwrap(), ACCEPTED_HTLC_SCRIPT_WEIGHT); // revoked received HTLC
2777 get_announce_close_broadcast_events(&nodes, 0, 1);
2778 assert_eq!(nodes[0].node.list_channels().len(), 0);
2779 assert_eq!(nodes[1].node.list_channels().len(), 0);
2783 fn test_htlc_on_chain_success() {
2784 // Test that in case of a unilateral close onchain, we detect the state of output and pass
2785 // the preimage backward accordingly. So here we test that ChannelManager is
2786 // broadcasting the right event to other nodes in payment path.
2787 // We test with two HTLCs simultaneously as that was not handled correctly in the past.
2788 // A --------------------> B ----------------------> C (preimage)
2789 // First, C should claim the HTLC outputs via HTLC-Success when its own latest local
2790 // commitment transaction was broadcast.
2791 // Then, B should learn the preimage from said transactions, attempting to claim backwards
2793 // B should be able to claim via preimage if A then broadcasts its local tx.
2794 // Finally, when A sees B's latest local commitment transaction it should be able to claim
2795 // the HTLC outputs via the preimage it learned (which, once confirmed should generate a
2796 // PaymentSent event).
2798 let chanmon_cfgs = create_chanmon_cfgs(3);
2799 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
2800 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
2801 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
2803 // Create some initial channels
2804 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2805 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
2807 // Rebalance the network a bit by relaying one payment through all the channels...
2808 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000, 8_000_000);
2809 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000, 8_000_000);
2811 let (our_payment_preimage, _payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
2812 let (our_payment_preimage_2, _payment_hash_2) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
2813 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
2815 // Broadcast legit commitment tx from C on B's chain
2816 // Broadcast HTLC Success transaction by C on received output from C's commitment tx on B's chain
2817 let commitment_tx = get_local_commitment_txn!(nodes[2], chan_2.2);
2818 assert_eq!(commitment_tx.len(), 1);
2819 check_spends!(commitment_tx[0], chan_2.3);
2820 nodes[2].node.claim_funds(our_payment_preimage, &None, 3_000_000);
2821 nodes[2].node.claim_funds(our_payment_preimage_2, &None, 3_000_000);
2822 check_added_monitors!(nodes[2], 2);
2823 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
2824 assert!(updates.update_add_htlcs.is_empty());
2825 assert!(updates.update_fail_htlcs.is_empty());
2826 assert!(updates.update_fail_malformed_htlcs.is_empty());
2827 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
2829 connect_block(&nodes[2], &Block { header, txdata: vec![commitment_tx[0].clone()]}, 1);
2830 check_closed_broadcast!(nodes[2], false);
2831 check_added_monitors!(nodes[2], 1);
2832 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)
2833 assert_eq!(node_txn.len(), 5);
2834 assert_eq!(node_txn[0], node_txn[3]);
2835 assert_eq!(node_txn[1], node_txn[4]);
2836 assert_eq!(node_txn[2], commitment_tx[0]);
2837 check_spends!(node_txn[0], commitment_tx[0]);
2838 check_spends!(node_txn[1], commitment_tx[0]);
2839 assert_eq!(node_txn[0].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
2840 assert_eq!(node_txn[1].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
2841 assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2842 assert!(node_txn[1].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2843 assert_eq!(node_txn[0].lock_time, 0);
2844 assert_eq!(node_txn[1].lock_time, 0);
2846 // Verify that B's ChannelManager is able to extract preimage from HTLC Success tx and pass it backward
2847 connect_block(&nodes[1], &Block { header, txdata: node_txn}, 1);
2849 let mut added_monitors = nodes[1].chain_monitor.added_monitors.lock().unwrap();
2850 assert_eq!(added_monitors.len(), 1);
2851 assert_eq!(added_monitors[0].0.txid, chan_2.3.txid());
2852 added_monitors.clear();
2854 let events = nodes[1].node.get_and_clear_pending_msg_events();
2856 let mut added_monitors = nodes[1].chain_monitor.added_monitors.lock().unwrap();
2857 assert_eq!(added_monitors.len(), 2);
2858 assert_eq!(added_monitors[0].0.txid, chan_1.3.txid());
2859 assert_eq!(added_monitors[1].0.txid, chan_1.3.txid());
2860 added_monitors.clear();
2862 assert_eq!(events.len(), 2);
2864 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
2865 _ => panic!("Unexpected event"),
2868 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, .. } } => {
2869 assert!(update_add_htlcs.is_empty());
2870 assert!(update_fail_htlcs.is_empty());
2871 assert_eq!(update_fulfill_htlcs.len(), 1);
2872 assert!(update_fail_malformed_htlcs.is_empty());
2873 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
2875 _ => panic!("Unexpected event"),
2877 macro_rules! check_tx_local_broadcast {
2878 ($node: expr, $htlc_offered: expr, $commitment_tx: expr, $chan_tx: expr) => { {
2879 let mut node_txn = $node.tx_broadcaster.txn_broadcasted.lock().unwrap();
2880 assert_eq!(node_txn.len(), 5);
2881 // Node[1]: ChannelManager: 3 (commitment tx, 2*HTLC-Timeout tx), ChannelMonitor: 2 (timeout tx)
2882 // Node[0]: ChannelManager: 3 (commtiemtn tx, 2*HTLC-Timeout tx), ChannelMonitor: 2 HTLC-timeout
2883 check_spends!(node_txn[0], $commitment_tx);
2884 check_spends!(node_txn[1], $commitment_tx);
2885 assert_ne!(node_txn[0].lock_time, 0);
2886 assert_ne!(node_txn[1].lock_time, 0);
2888 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2889 assert_eq!(node_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2890 assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2891 assert!(node_txn[1].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2893 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
2894 assert_eq!(node_txn[1].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
2895 assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
2896 assert!(node_txn[1].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
2898 check_spends!(node_txn[2], $chan_tx);
2899 check_spends!(node_txn[3], node_txn[2]);
2900 check_spends!(node_txn[4], node_txn[2]);
2901 assert_eq!(node_txn[2].input[0].witness.last().unwrap().len(), 71);
2902 assert_eq!(node_txn[3].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2903 assert_eq!(node_txn[4].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2904 assert!(node_txn[3].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2905 assert!(node_txn[4].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2906 assert_ne!(node_txn[3].lock_time, 0);
2907 assert_ne!(node_txn[4].lock_time, 0);
2911 // nodes[1] now broadcasts its own local state as a fallback, suggesting an alternate
2912 // commitment transaction with a corresponding HTLC-Timeout transactions, as well as a
2913 // timeout-claim of the output that nodes[2] just claimed via success.
2914 check_tx_local_broadcast!(nodes[1], false, commitment_tx[0], chan_2.3);
2916 // Broadcast legit commitment tx from A on B's chain
2917 // Broadcast preimage tx by B on offered output from A commitment tx on A's chain
2918 let commitment_tx = get_local_commitment_txn!(nodes[0], chan_1.2);
2919 check_spends!(commitment_tx[0], chan_1.3);
2920 connect_block(&nodes[1], &Block { header, txdata: vec![commitment_tx[0].clone()]}, 1);
2921 check_closed_broadcast!(nodes[1], false);
2922 check_added_monitors!(nodes[1], 1);
2923 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 3 (commitment tx + HTLC-Sucess * 2), ChannelMonitor : 1 (HTLC-Success)
2924 assert_eq!(node_txn.len(), 4);
2925 check_spends!(node_txn[0], commitment_tx[0]);
2926 assert_eq!(node_txn[0].input.len(), 2);
2927 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2928 assert_eq!(node_txn[0].input[1].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2929 assert_eq!(node_txn[0].lock_time, 0);
2930 assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
2931 check_spends!(node_txn[1], chan_1.3);
2932 assert_eq!(node_txn[1].input[0].witness.clone().last().unwrap().len(), 71);
2933 check_spends!(node_txn[2], node_txn[1]);
2934 check_spends!(node_txn[3], node_txn[1]);
2935 // We don't bother to check that B can claim the HTLC output on its commitment tx here as
2936 // we already checked the same situation with A.
2938 // Verify that A's ChannelManager is able to extract preimage from preimage tx and generate PaymentSent
2939 connect_block(&nodes[0], &Block { header, txdata: vec![commitment_tx[0].clone(), node_txn[0].clone()] }, 1);
2940 check_closed_broadcast!(nodes[0], false);
2941 check_added_monitors!(nodes[0], 1);
2942 let events = nodes[0].node.get_and_clear_pending_events();
2943 assert_eq!(events.len(), 2);
2944 let mut first_claimed = false;
2945 for event in events {
2947 Event::PaymentSent { payment_preimage } => {
2948 if payment_preimage == our_payment_preimage {
2949 assert!(!first_claimed);
2950 first_claimed = true;
2952 assert_eq!(payment_preimage, our_payment_preimage_2);
2955 _ => panic!("Unexpected event"),
2958 check_tx_local_broadcast!(nodes[0], true, commitment_tx[0], chan_1.3);
2962 fn test_htlc_on_chain_timeout() {
2963 // Test that in case of a unilateral close onchain, we detect the state of output and
2964 // timeout the HTLC backward accordingly. So here we test that ChannelManager is
2965 // broadcasting the right event to other nodes in payment path.
2966 // A ------------------> B ----------------------> C (timeout)
2967 // B's commitment tx C's commitment tx
2969 // B's HTLC timeout tx B's timeout tx
2971 let chanmon_cfgs = create_chanmon_cfgs(3);
2972 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
2973 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
2974 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
2976 // Create some intial channels
2977 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2978 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
2980 // Rebalance the network a bit by relaying one payment thorugh all the channels...
2981 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000, 8_000_000);
2982 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000, 8_000_000);
2984 let (_payment_preimage, payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
2985 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
2987 // Broadcast legit commitment tx from C on B's chain
2988 let commitment_tx = get_local_commitment_txn!(nodes[2], chan_2.2);
2989 check_spends!(commitment_tx[0], chan_2.3);
2990 nodes[2].node.fail_htlc_backwards(&payment_hash, &None);
2991 check_added_monitors!(nodes[2], 0);
2992 expect_pending_htlcs_forwardable!(nodes[2]);
2993 check_added_monitors!(nodes[2], 1);
2995 let events = nodes[2].node.get_and_clear_pending_msg_events();
2996 assert_eq!(events.len(), 1);
2998 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, .. } } => {
2999 assert!(update_add_htlcs.is_empty());
3000 assert!(!update_fail_htlcs.is_empty());
3001 assert!(update_fulfill_htlcs.is_empty());
3002 assert!(update_fail_malformed_htlcs.is_empty());
3003 assert_eq!(nodes[1].node.get_our_node_id(), *node_id);
3005 _ => panic!("Unexpected event"),
3007 connect_block(&nodes[2], &Block { header, txdata: vec![commitment_tx[0].clone()]}, 1);
3008 check_closed_broadcast!(nodes[2], false);
3009 check_added_monitors!(nodes[2], 1);
3010 let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 1 (commitment tx)
3011 assert_eq!(node_txn.len(), 1);
3012 check_spends!(node_txn[0], chan_2.3);
3013 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), 71);
3015 // Broadcast timeout transaction by B on received output from C's commitment tx on B's chain
3016 // Verify that B's ChannelManager is able to detect that HTLC is timeout by its own tx and react backward in consequence
3017 connect_block(&nodes[1], &Block { header, txdata: vec![commitment_tx[0].clone()]}, 200);
3020 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
3021 assert_eq!(node_txn.len(), 5); // ChannelManager : 2 (commitment tx, HTLC-Timeout tx), ChannelMonitor : 2 (local commitment tx + HTLC-timeout), 1 timeout tx
3022 assert_eq!(node_txn[1], node_txn[3]);
3023 assert_eq!(node_txn[2], node_txn[4]);
3025 check_spends!(node_txn[0], commitment_tx[0]);
3026 assert_eq!(node_txn[0].clone().input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
3028 check_spends!(node_txn[1], chan_2.3);
3029 check_spends!(node_txn[2], node_txn[1]);
3030 assert_eq!(node_txn[1].clone().input[0].witness.last().unwrap().len(), 71);
3031 assert_eq!(node_txn[2].clone().input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
3033 timeout_tx = node_txn[0].clone();
3037 connect_block(&nodes[1], &Block { header, txdata: vec![timeout_tx]}, 1);
3038 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1, 1, true, header.block_hash());
3039 check_added_monitors!(nodes[1], 1);
3040 check_closed_broadcast!(nodes[1], false);
3042 expect_pending_htlcs_forwardable!(nodes[1]);
3043 check_added_monitors!(nodes[1], 1);
3044 let events = nodes[1].node.get_and_clear_pending_msg_events();
3045 assert_eq!(events.len(), 1);
3047 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, .. } } => {
3048 assert!(update_add_htlcs.is_empty());
3049 assert!(!update_fail_htlcs.is_empty());
3050 assert!(update_fulfill_htlcs.is_empty());
3051 assert!(update_fail_malformed_htlcs.is_empty());
3052 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
3054 _ => panic!("Unexpected event"),
3056 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // Well... here we detect our own htlc_timeout_tx so no tx to be generated
3057 assert_eq!(node_txn.len(), 0);
3059 // Broadcast legit commitment tx from B on A's chain
3060 let commitment_tx = get_local_commitment_txn!(nodes[1], chan_1.2);
3061 check_spends!(commitment_tx[0], chan_1.3);
3063 connect_block(&nodes[0], &Block { header, txdata: vec![commitment_tx[0].clone()]}, 200);
3064 check_closed_broadcast!(nodes[0], false);
3065 check_added_monitors!(nodes[0], 1);
3066 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 2 (commitment tx, HTLC-Timeout tx), ChannelMonitor : 1 timeout tx
3067 assert_eq!(node_txn.len(), 3);
3068 check_spends!(node_txn[0], commitment_tx[0]);
3069 assert_eq!(node_txn[0].clone().input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
3070 check_spends!(node_txn[1], chan_1.3);
3071 check_spends!(node_txn[2], node_txn[1]);
3072 assert_eq!(node_txn[1].clone().input[0].witness.last().unwrap().len(), 71);
3073 assert_eq!(node_txn[2].clone().input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
3077 fn test_simple_commitment_revoked_fail_backward() {
3078 // Test that in case of a revoked commitment tx, we detect the resolution of output by justice tx
3079 // and fail backward accordingly.
3081 let chanmon_cfgs = create_chanmon_cfgs(3);
3082 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
3083 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
3084 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
3086 // Create some initial channels
3087 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3088 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
3090 let (payment_preimage, _payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000);
3091 // Get the will-be-revoked local txn from nodes[2]
3092 let revoked_local_txn = get_local_commitment_txn!(nodes[2], chan_2.2);
3093 // Revoke the old state
3094 claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage, 3_000_000);
3096 let (_, payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000);
3098 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
3099 connect_block(&nodes[1], &Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
3100 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1, 1, true, header.block_hash());
3101 check_added_monitors!(nodes[1], 1);
3102 check_closed_broadcast!(nodes[1], false);
3104 expect_pending_htlcs_forwardable!(nodes[1]);
3105 check_added_monitors!(nodes[1], 1);
3106 let events = nodes[1].node.get_and_clear_pending_msg_events();
3107 assert_eq!(events.len(), 1);
3109 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, .. } } => {
3110 assert!(update_add_htlcs.is_empty());
3111 assert_eq!(update_fail_htlcs.len(), 1);
3112 assert!(update_fulfill_htlcs.is_empty());
3113 assert!(update_fail_malformed_htlcs.is_empty());
3114 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
3116 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]);
3117 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false, true);
3119 let events = nodes[0].node.get_and_clear_pending_msg_events();
3120 assert_eq!(events.len(), 1);
3122 MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
3123 _ => panic!("Unexpected event"),
3125 expect_payment_failed!(nodes[0], payment_hash, false);
3127 _ => panic!("Unexpected event"),
3131 fn do_test_commitment_revoked_fail_backward_exhaustive(deliver_bs_raa: bool, use_dust: bool, no_to_remote: bool) {
3132 // Test that if our counterparty broadcasts a revoked commitment transaction we fail all
3133 // pending HTLCs on that channel backwards even if the HTLCs aren't present in our latest
3134 // commitment transaction anymore.
3135 // To do this, we have the peer which will broadcast a revoked commitment transaction send
3136 // a number of update_fail/commitment_signed updates without ever sending the RAA in
3137 // response to our commitment_signed. This is somewhat misbehavior-y, though not
3138 // technically disallowed and we should probably handle it reasonably.
3139 // Note that this is pretty exhaustive as an outbound HTLC which we haven't yet
3140 // failed/fulfilled backwards must be in at least one of the latest two remote commitment
3142 // * Once we move it out of our holding cell/add it, we will immediately include it in a
3143 // commitment_signed (implying it will be in the latest remote commitment transaction).
3144 // * Once they remove it, we will send a (the first) commitment_signed without the HTLC,
3145 // and once they revoke the previous commitment transaction (allowing us to send a new
3146 // commitment_signed) we will be free to fail/fulfill the HTLC backwards.
3147 let chanmon_cfgs = create_chanmon_cfgs(3);
3148 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
3149 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
3150 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
3152 // Create some initial channels
3153 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3154 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
3156 let (payment_preimage, _payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], if no_to_remote { 10_000 } else { 3_000_000 });
3157 // Get the will-be-revoked local txn from nodes[2]
3158 let revoked_local_txn = get_local_commitment_txn!(nodes[2], chan_2.2);
3159 assert_eq!(revoked_local_txn[0].output.len(), if no_to_remote { 1 } else { 2 });
3160 // Revoke the old state
3161 claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage, if no_to_remote { 10_000 } else { 3_000_000});
3163 let value = if use_dust {
3164 // The dust limit applied to HTLC outputs considers the fee of the HTLC transaction as
3165 // well, so HTLCs at exactly the dust limit will not be included in commitment txn.
3166 nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().holder_dust_limit_satoshis * 1000
3169 let (_, first_payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], value);
3170 let (_, second_payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], value);
3171 let (_, third_payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], value);
3173 assert!(nodes[2].node.fail_htlc_backwards(&first_payment_hash, &None));
3174 expect_pending_htlcs_forwardable!(nodes[2]);
3175 check_added_monitors!(nodes[2], 1);
3176 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
3177 assert!(updates.update_add_htlcs.is_empty());
3178 assert!(updates.update_fulfill_htlcs.is_empty());
3179 assert!(updates.update_fail_malformed_htlcs.is_empty());
3180 assert_eq!(updates.update_fail_htlcs.len(), 1);
3181 assert!(updates.update_fee.is_none());
3182 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
3183 let bs_raa = commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false, true, false, true);
3184 // Drop the last RAA from 3 -> 2
3186 assert!(nodes[2].node.fail_htlc_backwards(&second_payment_hash, &None));
3187 expect_pending_htlcs_forwardable!(nodes[2]);
3188 check_added_monitors!(nodes[2], 1);
3189 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
3190 assert!(updates.update_add_htlcs.is_empty());
3191 assert!(updates.update_fulfill_htlcs.is_empty());
3192 assert!(updates.update_fail_malformed_htlcs.is_empty());
3193 assert_eq!(updates.update_fail_htlcs.len(), 1);
3194 assert!(updates.update_fee.is_none());
3195 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
3196 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &updates.commitment_signed);
3197 check_added_monitors!(nodes[1], 1);
3198 // Note that nodes[1] is in AwaitingRAA, so won't send a CS
3199 let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
3200 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa);
3201 check_added_monitors!(nodes[2], 1);
3203 assert!(nodes[2].node.fail_htlc_backwards(&third_payment_hash, &None));
3204 expect_pending_htlcs_forwardable!(nodes[2]);
3205 check_added_monitors!(nodes[2], 1);
3206 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
3207 assert!(updates.update_add_htlcs.is_empty());
3208 assert!(updates.update_fulfill_htlcs.is_empty());
3209 assert!(updates.update_fail_malformed_htlcs.is_empty());
3210 assert_eq!(updates.update_fail_htlcs.len(), 1);
3211 assert!(updates.update_fee.is_none());
3212 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
3213 // At this point first_payment_hash has dropped out of the latest two commitment
3214 // transactions that nodes[1] is tracking...
3215 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &updates.commitment_signed);
3216 check_added_monitors!(nodes[1], 1);
3217 // Note that nodes[1] is (still) in AwaitingRAA, so won't send a CS
3218 let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
3219 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa);
3220 check_added_monitors!(nodes[2], 1);
3222 // Add a fourth HTLC, this one will get sequestered away in nodes[1]'s holding cell waiting
3223 // on nodes[2]'s RAA.
3224 let (_, fourth_payment_hash) = get_payment_preimage_hash!(nodes[0]);
3225 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
3226 let logger = test_utils::TestLogger::new();
3227 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(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
3228 nodes[1].node.send_payment(&route, fourth_payment_hash, &None).unwrap();
3229 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
3230 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
3231 check_added_monitors!(nodes[1], 0);
3234 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_raa);
3235 // One monitor for the new revocation preimage, no second on as we won't generate a new
3236 // commitment transaction for nodes[0] until process_pending_htlc_forwards().
3237 check_added_monitors!(nodes[1], 1);
3238 let events = nodes[1].node.get_and_clear_pending_events();
3239 assert_eq!(events.len(), 1);
3241 Event::PendingHTLCsForwardable { .. } => { },
3242 _ => panic!("Unexpected event"),
3244 // Deliberately don't process the pending fail-back so they all fail back at once after
3245 // block connection just like the !deliver_bs_raa case
3248 let mut failed_htlcs = HashSet::new();
3249 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
3251 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
3252 connect_block(&nodes[1], &Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
3253 check_added_monitors!(nodes[1], 1);
3254 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1, 1, true, header.block_hash());
3256 let events = nodes[1].node.get_and_clear_pending_events();
3257 assert_eq!(events.len(), if deliver_bs_raa { 1 } else { 2 });
3259 Event::PaymentFailed { ref payment_hash, .. } => {
3260 assert_eq!(*payment_hash, fourth_payment_hash);
3262 _ => panic!("Unexpected event"),
3264 if !deliver_bs_raa {
3266 Event::PendingHTLCsForwardable { .. } => { },
3267 _ => panic!("Unexpected event"),
3270 nodes[1].node.process_pending_htlc_forwards();
3271 check_added_monitors!(nodes[1], 1);
3273 let events = nodes[1].node.get_and_clear_pending_msg_events();
3274 assert_eq!(events.len(), if deliver_bs_raa { 3 } else { 2 });
3275 match events[if deliver_bs_raa { 1 } else { 0 }] {
3276 MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {},
3277 _ => panic!("Unexpected event"),
3281 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, .. } } => {
3282 assert_eq!(nodes[2].node.get_our_node_id(), *node_id);
3283 assert_eq!(update_add_htlcs.len(), 1);
3284 assert!(update_fulfill_htlcs.is_empty());
3285 assert!(update_fail_htlcs.is_empty());
3286 assert!(update_fail_malformed_htlcs.is_empty());
3288 _ => panic!("Unexpected event"),
3291 match events[if deliver_bs_raa { 2 } else { 1 }] {
3292 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, .. } } => {
3293 assert!(update_add_htlcs.is_empty());
3294 assert_eq!(update_fail_htlcs.len(), 3);
3295 assert!(update_fulfill_htlcs.is_empty());
3296 assert!(update_fail_malformed_htlcs.is_empty());
3297 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
3299 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]);
3300 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[1]);
3301 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[2]);
3303 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false, true);
3305 let events = nodes[0].node.get_and_clear_pending_msg_events();
3306 // If we delivered B's RAA we got an unknown preimage error, not something
3307 // that we should update our routing table for.
3308 assert_eq!(events.len(), if deliver_bs_raa { 2 } else { 3 });
3309 for event in events {
3311 MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
3312 _ => panic!("Unexpected event"),
3315 let events = nodes[0].node.get_and_clear_pending_events();
3316 assert_eq!(events.len(), 3);
3318 Event::PaymentFailed { ref payment_hash, .. } => {
3319 assert!(failed_htlcs.insert(payment_hash.0));
3321 _ => panic!("Unexpected event"),
3324 Event::PaymentFailed { ref payment_hash, .. } => {
3325 assert!(failed_htlcs.insert(payment_hash.0));
3327 _ => panic!("Unexpected event"),
3330 Event::PaymentFailed { ref payment_hash, .. } => {
3331 assert!(failed_htlcs.insert(payment_hash.0));
3333 _ => panic!("Unexpected event"),
3336 _ => panic!("Unexpected event"),
3339 assert!(failed_htlcs.contains(&first_payment_hash.0));
3340 assert!(failed_htlcs.contains(&second_payment_hash.0));
3341 assert!(failed_htlcs.contains(&third_payment_hash.0));
3345 fn test_commitment_revoked_fail_backward_exhaustive_a() {
3346 do_test_commitment_revoked_fail_backward_exhaustive(false, true, false);
3347 do_test_commitment_revoked_fail_backward_exhaustive(true, true, false);
3348 do_test_commitment_revoked_fail_backward_exhaustive(false, false, false);
3349 do_test_commitment_revoked_fail_backward_exhaustive(true, false, false);
3353 fn test_commitment_revoked_fail_backward_exhaustive_b() {
3354 do_test_commitment_revoked_fail_backward_exhaustive(false, true, true);
3355 do_test_commitment_revoked_fail_backward_exhaustive(true, true, true);
3356 do_test_commitment_revoked_fail_backward_exhaustive(false, false, true);
3357 do_test_commitment_revoked_fail_backward_exhaustive(true, false, true);
3361 fn fail_backward_pending_htlc_upon_channel_failure() {
3362 let chanmon_cfgs = create_chanmon_cfgs(2);
3363 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3364 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3365 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3366 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 500_000_000, InitFeatures::known(), InitFeatures::known());
3367 let logger = test_utils::TestLogger::new();
3369 // Alice -> Bob: Route a payment but without Bob sending revoke_and_ack.
3371 let (_, payment_hash) = get_payment_preimage_hash!(nodes[0]);
3372 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3373 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(), None, &Vec::new(), 50_000, TEST_FINAL_CLTV, &logger).unwrap();
3374 nodes[0].node.send_payment(&route, payment_hash, &None).unwrap();
3375 check_added_monitors!(nodes[0], 1);
3377 let payment_event = {
3378 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
3379 assert_eq!(events.len(), 1);
3380 SendEvent::from_event(events.remove(0))
3382 assert_eq!(payment_event.node_id, nodes[1].node.get_our_node_id());
3383 assert_eq!(payment_event.msgs.len(), 1);
3386 // Alice -> Bob: Route another payment but now Alice waits for Bob's earlier revoke_and_ack.
3387 let (_, failed_payment_hash) = get_payment_preimage_hash!(nodes[0]);
3389 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3390 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(), None, &Vec::new(), 50_000, TEST_FINAL_CLTV, &logger).unwrap();
3391 nodes[0].node.send_payment(&route, failed_payment_hash, &None).unwrap();
3392 check_added_monitors!(nodes[0], 0);
3394 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
3397 // Alice <- Bob: Send a malformed update_add_htlc so Alice fails the channel.
3399 let (_, payment_hash) = get_payment_preimage_hash!(nodes[1]);
3401 let secp_ctx = Secp256k1::new();
3402 let session_priv = SecretKey::from_slice(&[42; 32]).unwrap();
3403 let current_height = nodes[1].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
3404 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
3405 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(), None, &Vec::new(), 50_000, TEST_FINAL_CLTV, &logger).unwrap();
3406 let (onion_payloads, _amount_msat, cltv_expiry) = onion_utils::build_onion_payloads(&route.paths[0], 50_000, &None, current_height).unwrap();
3407 let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route.paths[0], &session_priv).unwrap();
3408 let onion_routing_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &payment_hash);
3410 // Send a 0-msat update_add_htlc to fail the channel.
3411 let update_add_htlc = msgs::UpdateAddHTLC {
3417 onion_routing_packet,
3419 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &update_add_htlc);
3422 // Check that Alice fails backward the pending HTLC from the second payment.
3423 expect_payment_failed!(nodes[0], failed_payment_hash, true);
3424 check_closed_broadcast!(nodes[0], true);
3425 check_added_monitors!(nodes[0], 1);
3429 fn test_htlc_ignore_latest_remote_commitment() {
3430 // Test that HTLC transactions spending the latest remote commitment transaction are simply
3431 // ignored if we cannot claim them. This originally tickled an invalid unwrap().
3432 let chanmon_cfgs = create_chanmon_cfgs(2);
3433 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3434 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3435 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3436 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3438 route_payment(&nodes[0], &[&nodes[1]], 10000000);
3439 nodes[0].node.force_close_channel(&nodes[0].node.list_channels()[0].channel_id);
3440 check_closed_broadcast!(nodes[0], false);
3441 check_added_monitors!(nodes[0], 1);
3443 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
3444 assert_eq!(node_txn.len(), 2);
3446 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3447 connect_block(&nodes[1], &Block { header, txdata: vec![node_txn[0].clone(), node_txn[1].clone()]}, 1);
3448 check_closed_broadcast!(nodes[1], false);
3449 check_added_monitors!(nodes[1], 1);
3451 // Duplicate the connect_block call since this may happen due to other listeners
3452 // registering new transactions
3453 connect_block(&nodes[1], &Block { header, txdata: vec![node_txn[0].clone(), node_txn[1].clone()]}, 1);
3457 fn test_force_close_fail_back() {
3458 // Check which HTLCs are failed-backwards on channel force-closure
3459 let chanmon_cfgs = create_chanmon_cfgs(3);
3460 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
3461 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
3462 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
3463 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3464 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
3465 let logger = test_utils::TestLogger::new();
3467 let (our_payment_preimage, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
3469 let mut payment_event = {
3470 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3471 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(), None, &Vec::new(), 1000000, 42, &logger).unwrap();
3472 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
3473 check_added_monitors!(nodes[0], 1);
3475 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
3476 assert_eq!(events.len(), 1);
3477 SendEvent::from_event(events.remove(0))
3480 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
3481 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
3483 expect_pending_htlcs_forwardable!(nodes[1]);
3485 let mut events_2 = nodes[1].node.get_and_clear_pending_msg_events();
3486 assert_eq!(events_2.len(), 1);
3487 payment_event = SendEvent::from_event(events_2.remove(0));
3488 assert_eq!(payment_event.msgs.len(), 1);
3490 check_added_monitors!(nodes[1], 1);
3491 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]);
3492 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg);
3493 check_added_monitors!(nodes[2], 1);
3494 let (_, _) = get_revoke_commit_msgs!(nodes[2], nodes[1].node.get_our_node_id());
3496 // nodes[2] now has the latest commitment transaction, but hasn't revoked its previous
3497 // state or updated nodes[1]' state. Now force-close and broadcast that commitment/HTLC
3498 // transaction and ensure nodes[1] doesn't fail-backwards (this was originally a bug!).
3500 nodes[2].node.force_close_channel(&payment_event.commitment_msg.channel_id);
3501 check_closed_broadcast!(nodes[2], false);
3502 check_added_monitors!(nodes[2], 1);
3504 let mut node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap();
3505 // Note that we don't bother broadcasting the HTLC-Success transaction here as we don't
3506 // have a use for it unless nodes[2] learns the preimage somehow, the funds will go
3507 // back to nodes[1] upon timeout otherwise.
3508 assert_eq!(node_txn.len(), 1);
3513 header: BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
3514 txdata: vec![tx.clone()],
3516 connect_block(&nodes[1], &block, 1);
3518 // Note no UpdateHTLCs event here from nodes[1] to nodes[0]!
3519 check_closed_broadcast!(nodes[1], false);
3520 check_added_monitors!(nodes[1], 1);
3522 // Now check that if we add the preimage to ChannelMonitor it broadcasts our HTLC-Success..
3524 let mut monitors = nodes[2].chain_monitor.chain_monitor.monitors.lock().unwrap();
3525 monitors.get_mut(&OutPoint{ txid: Txid::from_slice(&payment_event.commitment_msg.channel_id[..]).unwrap(), index: 0 }).unwrap()
3526 .provide_payment_preimage(&our_payment_hash, &our_payment_preimage);
3528 connect_block(&nodes[2], &block, 1);
3529 let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap();
3530 assert_eq!(node_txn.len(), 1);
3531 assert_eq!(node_txn[0].input.len(), 1);
3532 assert_eq!(node_txn[0].input[0].previous_output.txid, tx.txid());
3533 assert_eq!(node_txn[0].lock_time, 0); // Must be an HTLC-Success
3534 assert_eq!(node_txn[0].input[0].witness.len(), 5); // Must be an HTLC-Success
3536 check_spends!(node_txn[0], tx);
3540 fn test_unconf_chan() {
3541 // After creating a chan between nodes, we disconnect all blocks previously seen to force a channel close on nodes[0] side
3542 let chanmon_cfgs = create_chanmon_cfgs(2);
3543 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3544 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3545 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3546 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3548 let channel_state = nodes[0].node.channel_state.lock().unwrap();
3549 assert_eq!(channel_state.by_id.len(), 1);
3550 assert_eq!(channel_state.short_to_id.len(), 1);
3551 mem::drop(channel_state);
3553 let mut headers = Vec::new();
3554 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3555 headers.push(header.clone());
3557 header = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3558 headers.push(header.clone());
3560 while !headers.is_empty() {
3561 nodes[0].node.block_disconnected(&headers.pop().unwrap());
3563 check_closed_broadcast!(nodes[0], false);
3564 check_added_monitors!(nodes[0], 1);
3565 let channel_state = nodes[0].node.channel_state.lock().unwrap();
3566 assert_eq!(channel_state.by_id.len(), 0);
3567 assert_eq!(channel_state.short_to_id.len(), 0);
3571 fn test_simple_peer_disconnect() {
3572 // Test that we can reconnect when there are no lost messages
3573 let chanmon_cfgs = create_chanmon_cfgs(3);
3574 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
3575 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
3576 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
3577 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3578 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
3580 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3581 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3582 reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3584 let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0;
3585 let payment_hash_2 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1;
3586 fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_hash_2);
3587 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_preimage_1, 1_000_000);
3589 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3590 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3591 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3593 let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0;
3594 let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0;
3595 let payment_hash_5 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1;
3596 let payment_hash_6 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1;
3598 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3599 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3601 claim_payment_along_route(&nodes[0], &vec!(&nodes[1], &nodes[2]), true, payment_preimage_3, 1_000_000);
3602 fail_payment_along_route(&nodes[0], &[&nodes[1], &nodes[2]], true, payment_hash_5);
3604 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (1, 0), (1, 0), (false, false));
3606 let events = nodes[0].node.get_and_clear_pending_events();
3607 assert_eq!(events.len(), 2);
3609 Event::PaymentSent { payment_preimage } => {
3610 assert_eq!(payment_preimage, payment_preimage_3);
3612 _ => panic!("Unexpected event"),
3615 Event::PaymentFailed { payment_hash, rejected_by_dest, .. } => {
3616 assert_eq!(payment_hash, payment_hash_5);
3617 assert!(rejected_by_dest);
3619 _ => panic!("Unexpected event"),
3623 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_preimage_4, 1_000_000);
3624 fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_hash_6);
3627 fn do_test_drop_messages_peer_disconnect(messages_delivered: u8) {
3628 // Test that we can reconnect when in-flight HTLC updates get dropped
3629 let chanmon_cfgs = create_chanmon_cfgs(2);
3630 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3631 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3632 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3633 if messages_delivered == 0 {
3634 create_chan_between_nodes_with_value_a(&nodes[0], &nodes[1], 100000, 10001, InitFeatures::known(), InitFeatures::known());
3635 // nodes[1] doesn't receive the funding_locked message (it'll be re-sent on reconnect)
3637 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3640 let (payment_preimage_1, payment_hash_1) = get_payment_preimage_hash!(nodes[0]);
3642 let logger = test_utils::TestLogger::new();
3643 let payment_event = {
3644 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3645 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(),
3646 &nodes[1].node.get_our_node_id(), Some(&nodes[0].node.list_usable_channels().iter().collect::<Vec<_>>()),
3647 &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
3648 nodes[0].node.send_payment(&route, payment_hash_1, &None).unwrap();
3649 check_added_monitors!(nodes[0], 1);
3651 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
3652 assert_eq!(events.len(), 1);
3653 SendEvent::from_event(events.remove(0))
3655 assert_eq!(nodes[1].node.get_our_node_id(), payment_event.node_id);
3657 if messages_delivered < 2 {
3658 // Drop the payment_event messages, and let them get re-generated in reconnect_nodes!
3660 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
3661 if messages_delivered >= 3 {
3662 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event.commitment_msg);
3663 check_added_monitors!(nodes[1], 1);
3664 let (bs_revoke_and_ack, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
3666 if messages_delivered >= 4 {
3667 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack);
3668 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
3669 check_added_monitors!(nodes[0], 1);
3671 if messages_delivered >= 5 {
3672 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_commitment_signed);
3673 let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
3674 // No commitment_signed so get_event_msg's assert(len == 1) passes
3675 check_added_monitors!(nodes[0], 1);
3677 if messages_delivered >= 6 {
3678 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack);
3679 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
3680 check_added_monitors!(nodes[1], 1);
3687 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3688 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3689 if messages_delivered < 3 {
3690 // Even if the funding_locked messages get exchanged, as long as nothing further was
3691 // received on either side, both sides will need to resend them.
3692 reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 1), (0, 0), (0, 0), (0, 0), (false, false));
3693 } else if messages_delivered == 3 {
3694 // nodes[0] still wants its RAA + commitment_signed
3695 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (-1, 0), (0, 0), (0, 0), (0, 0), (true, false));
3696 } else if messages_delivered == 4 {
3697 // nodes[0] still wants its commitment_signed
3698 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (-1, 0), (0, 0), (0, 0), (0, 0), (false, false));
3699 } else if messages_delivered == 5 {
3700 // nodes[1] still wants its final RAA
3701 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, true));
3702 } else if messages_delivered == 6 {
3703 // Everything was delivered...
3704 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3707 let events_1 = nodes[1].node.get_and_clear_pending_events();
3708 assert_eq!(events_1.len(), 1);
3710 Event::PendingHTLCsForwardable { .. } => { },
3711 _ => panic!("Unexpected event"),
3714 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3715 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3716 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3718 nodes[1].node.process_pending_htlc_forwards();
3720 let events_2 = nodes[1].node.get_and_clear_pending_events();
3721 assert_eq!(events_2.len(), 1);
3723 Event::PaymentReceived { ref payment_hash, ref payment_secret, amt } => {
3724 assert_eq!(payment_hash_1, *payment_hash);
3725 assert_eq!(*payment_secret, None);
3726 assert_eq!(amt, 1000000);
3728 _ => panic!("Unexpected event"),
3731 nodes[1].node.claim_funds(payment_preimage_1, &None, 1_000_000);
3732 check_added_monitors!(nodes[1], 1);
3734 let events_3 = nodes[1].node.get_and_clear_pending_msg_events();
3735 assert_eq!(events_3.len(), 1);
3736 let (update_fulfill_htlc, commitment_signed) = match events_3[0] {
3737 MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => {
3738 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
3739 assert!(updates.update_add_htlcs.is_empty());
3740 assert!(updates.update_fail_htlcs.is_empty());
3741 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
3742 assert!(updates.update_fail_malformed_htlcs.is_empty());
3743 assert!(updates.update_fee.is_none());
3744 (updates.update_fulfill_htlcs[0].clone(), updates.commitment_signed.clone())
3746 _ => panic!("Unexpected event"),
3749 if messages_delivered >= 1 {
3750 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_htlc);
3752 let events_4 = nodes[0].node.get_and_clear_pending_events();
3753 assert_eq!(events_4.len(), 1);
3755 Event::PaymentSent { ref payment_preimage } => {
3756 assert_eq!(payment_preimage_1, *payment_preimage);
3758 _ => panic!("Unexpected event"),
3761 if messages_delivered >= 2 {
3762 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed);
3763 check_added_monitors!(nodes[0], 1);
3764 let (as_revoke_and_ack, as_commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
3766 if messages_delivered >= 3 {
3767 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack);
3768 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
3769 check_added_monitors!(nodes[1], 1);
3771 if messages_delivered >= 4 {
3772 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_signed);
3773 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
3774 // No commitment_signed so get_event_msg's assert(len == 1) passes
3775 check_added_monitors!(nodes[1], 1);
3777 if messages_delivered >= 5 {
3778 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack);
3779 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
3780 check_added_monitors!(nodes[0], 1);
3787 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3788 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3789 if messages_delivered < 2 {
3790 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (1, 0), (0, 0), (0, 0), (false, false));
3791 //TODO: Deduplicate PaymentSent events, then enable this if:
3792 //if messages_delivered < 1 {
3793 let events_4 = nodes[0].node.get_and_clear_pending_events();
3794 assert_eq!(events_4.len(), 1);
3796 Event::PaymentSent { ref payment_preimage } => {
3797 assert_eq!(payment_preimage_1, *payment_preimage);
3799 _ => panic!("Unexpected event"),
3802 } else if messages_delivered == 2 {
3803 // nodes[0] still wants its RAA + commitment_signed
3804 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, -1), (0, 0), (0, 0), (0, 0), (false, true));
3805 } else if messages_delivered == 3 {
3806 // nodes[0] still wants its commitment_signed
3807 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, -1), (0, 0), (0, 0), (0, 0), (false, false));
3808 } else if messages_delivered == 4 {
3809 // nodes[1] still wants its final RAA
3810 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (true, false));
3811 } else if messages_delivered == 5 {
3812 // Everything was delivered...
3813 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3816 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3817 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3818 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3820 // Channel should still work fine...
3821 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3822 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(),
3823 &nodes[1].node.get_our_node_id(), Some(&nodes[0].node.list_usable_channels().iter().collect::<Vec<_>>()),
3824 &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
3825 let payment_preimage_2 = send_along_route(&nodes[0], route, &[&nodes[1]], 1000000).0;
3826 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2, 1_000_000);
3830 fn test_drop_messages_peer_disconnect_a() {
3831 do_test_drop_messages_peer_disconnect(0);
3832 do_test_drop_messages_peer_disconnect(1);
3833 do_test_drop_messages_peer_disconnect(2);
3834 do_test_drop_messages_peer_disconnect(3);
3838 fn test_drop_messages_peer_disconnect_b() {
3839 do_test_drop_messages_peer_disconnect(4);
3840 do_test_drop_messages_peer_disconnect(5);
3841 do_test_drop_messages_peer_disconnect(6);
3845 fn test_funding_peer_disconnect() {
3846 // Test that we can lock in our funding tx while disconnected
3847 let chanmon_cfgs = create_chanmon_cfgs(2);
3848 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3849 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3850 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3851 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001, InitFeatures::known(), InitFeatures::known());
3853 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3854 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3856 confirm_transaction(&nodes[0], &tx);
3857 let events_1 = nodes[0].node.get_and_clear_pending_msg_events();
3858 assert_eq!(events_1.len(), 1);
3860 MessageSendEvent::SendFundingLocked { ref node_id, msg: _ } => {
3861 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
3863 _ => panic!("Unexpected event"),
3866 reconnect_nodes(&nodes[0], &nodes[1], (false, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3868 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3869 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3871 confirm_transaction(&nodes[1], &tx);
3872 let events_2 = nodes[1].node.get_and_clear_pending_msg_events();
3873 assert_eq!(events_2.len(), 2);
3874 let funding_locked = match events_2[0] {
3875 MessageSendEvent::SendFundingLocked { ref node_id, ref msg } => {
3876 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
3879 _ => panic!("Unexpected event"),
3881 let bs_announcement_sigs = match events_2[1] {
3882 MessageSendEvent::SendAnnouncementSignatures { ref node_id, ref msg } => {
3883 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
3886 _ => panic!("Unexpected event"),
3889 reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3891 nodes[0].node.handle_funding_locked(&nodes[1].node.get_our_node_id(), &funding_locked);
3892 nodes[0].node.handle_announcement_signatures(&nodes[1].node.get_our_node_id(), &bs_announcement_sigs);
3893 let events_3 = nodes[0].node.get_and_clear_pending_msg_events();
3894 assert_eq!(events_3.len(), 2);
3895 let as_announcement_sigs = match events_3[0] {
3896 MessageSendEvent::SendAnnouncementSignatures { ref node_id, ref msg } => {
3897 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
3900 _ => panic!("Unexpected event"),
3902 let (as_announcement, as_update) = match events_3[1] {
3903 MessageSendEvent::BroadcastChannelAnnouncement { ref msg, ref update_msg } => {
3904 (msg.clone(), update_msg.clone())
3906 _ => panic!("Unexpected event"),
3909 nodes[1].node.handle_announcement_signatures(&nodes[0].node.get_our_node_id(), &as_announcement_sigs);
3910 let events_4 = nodes[1].node.get_and_clear_pending_msg_events();
3911 assert_eq!(events_4.len(), 1);
3912 let (_, bs_update) = match events_4[0] {
3913 MessageSendEvent::BroadcastChannelAnnouncement { ref msg, ref update_msg } => {
3914 (msg.clone(), update_msg.clone())
3916 _ => panic!("Unexpected event"),
3919 nodes[0].net_graph_msg_handler.handle_channel_announcement(&as_announcement).unwrap();
3920 nodes[0].net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
3921 nodes[0].net_graph_msg_handler.handle_channel_update(&as_update).unwrap();
3923 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3924 let logger = test_utils::TestLogger::new();
3925 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(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
3926 let (payment_preimage, _) = send_along_route(&nodes[0], route, &[&nodes[1]], 1000000);
3927 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage, 1_000_000);
3931 fn test_drop_messages_peer_disconnect_dual_htlc() {
3932 // Test that we can handle reconnecting when both sides of a channel have pending
3933 // commitment_updates when we disconnect.
3934 let chanmon_cfgs = create_chanmon_cfgs(2);
3935 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3936 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3937 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3938 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3939 let logger = test_utils::TestLogger::new();
3941 let (payment_preimage_1, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
3943 // Now try to send a second payment which will fail to send
3944 let (payment_preimage_2, payment_hash_2) = get_payment_preimage_hash!(nodes[0]);
3945 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3946 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(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
3947 nodes[0].node.send_payment(&route, payment_hash_2, &None).unwrap();
3948 check_added_monitors!(nodes[0], 1);
3950 let events_1 = nodes[0].node.get_and_clear_pending_msg_events();
3951 assert_eq!(events_1.len(), 1);
3953 MessageSendEvent::UpdateHTLCs { .. } => {},
3954 _ => panic!("Unexpected event"),
3957 assert!(nodes[1].node.claim_funds(payment_preimage_1, &None, 1_000_000));
3958 check_added_monitors!(nodes[1], 1);
3960 let events_2 = nodes[1].node.get_and_clear_pending_msg_events();
3961 assert_eq!(events_2.len(), 1);
3963 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 } } => {
3964 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
3965 assert!(update_add_htlcs.is_empty());
3966 assert_eq!(update_fulfill_htlcs.len(), 1);
3967 assert!(update_fail_htlcs.is_empty());
3968 assert!(update_fail_malformed_htlcs.is_empty());
3969 assert!(update_fee.is_none());
3971 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_htlcs[0]);
3972 let events_3 = nodes[0].node.get_and_clear_pending_events();
3973 assert_eq!(events_3.len(), 1);
3975 Event::PaymentSent { ref payment_preimage } => {
3976 assert_eq!(*payment_preimage, payment_preimage_1);
3978 _ => panic!("Unexpected event"),
3981 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), commitment_signed);
3982 let _ = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
3983 // No commitment_signed so get_event_msg's assert(len == 1) passes
3984 check_added_monitors!(nodes[0], 1);
3986 _ => panic!("Unexpected event"),
3989 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3990 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3992 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
3993 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
3994 assert_eq!(reestablish_1.len(), 1);
3995 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
3996 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
3997 assert_eq!(reestablish_2.len(), 1);
3999 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
4000 let as_resp = handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
4001 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
4002 let bs_resp = handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
4004 assert!(as_resp.0.is_none());
4005 assert!(bs_resp.0.is_none());
4007 assert!(bs_resp.1.is_none());
4008 assert!(bs_resp.2.is_none());
4010 assert!(as_resp.3 == RAACommitmentOrder::CommitmentFirst);
4012 assert_eq!(as_resp.2.as_ref().unwrap().update_add_htlcs.len(), 1);
4013 assert!(as_resp.2.as_ref().unwrap().update_fulfill_htlcs.is_empty());
4014 assert!(as_resp.2.as_ref().unwrap().update_fail_htlcs.is_empty());
4015 assert!(as_resp.2.as_ref().unwrap().update_fail_malformed_htlcs.is_empty());
4016 assert!(as_resp.2.as_ref().unwrap().update_fee.is_none());
4017 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &as_resp.2.as_ref().unwrap().update_add_htlcs[0]);
4018 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_resp.2.as_ref().unwrap().commitment_signed);
4019 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
4020 // No commitment_signed so get_event_msg's assert(len == 1) passes
4021 check_added_monitors!(nodes[1], 1);
4023 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), as_resp.1.as_ref().unwrap());
4024 let bs_second_commitment_signed = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
4025 assert!(bs_second_commitment_signed.update_add_htlcs.is_empty());
4026 assert!(bs_second_commitment_signed.update_fulfill_htlcs.is_empty());
4027 assert!(bs_second_commitment_signed.update_fail_htlcs.is_empty());
4028 assert!(bs_second_commitment_signed.update_fail_malformed_htlcs.is_empty());
4029 assert!(bs_second_commitment_signed.update_fee.is_none());
4030 check_added_monitors!(nodes[1], 1);
4032 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack);
4033 let as_commitment_signed = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
4034 assert!(as_commitment_signed.update_add_htlcs.is_empty());
4035 assert!(as_commitment_signed.update_fulfill_htlcs.is_empty());
4036 assert!(as_commitment_signed.update_fail_htlcs.is_empty());
4037 assert!(as_commitment_signed.update_fail_malformed_htlcs.is_empty());
4038 assert!(as_commitment_signed.update_fee.is_none());
4039 check_added_monitors!(nodes[0], 1);
4041 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_commitment_signed.commitment_signed);
4042 let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
4043 // No commitment_signed so get_event_msg's assert(len == 1) passes
4044 check_added_monitors!(nodes[0], 1);
4046 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_signed.commitment_signed);
4047 let bs_second_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
4048 // No commitment_signed so get_event_msg's assert(len == 1) passes
4049 check_added_monitors!(nodes[1], 1);
4051 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack);
4052 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
4053 check_added_monitors!(nodes[1], 1);
4055 expect_pending_htlcs_forwardable!(nodes[1]);
4057 let events_5 = nodes[1].node.get_and_clear_pending_events();
4058 assert_eq!(events_5.len(), 1);
4060 Event::PaymentReceived { ref payment_hash, ref payment_secret, amt: _ } => {
4061 assert_eq!(payment_hash_2, *payment_hash);
4062 assert_eq!(*payment_secret, None);
4064 _ => panic!("Unexpected event"),
4067 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke_and_ack);
4068 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
4069 check_added_monitors!(nodes[0], 1);
4071 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2, 1_000_000);
4074 fn do_test_htlc_timeout(send_partial_mpp: bool) {
4075 // If the user fails to claim/fail an HTLC within the HTLC CLTV timeout we fail it for them
4076 // to avoid our counterparty failing the channel.
4077 let chanmon_cfgs = create_chanmon_cfgs(2);
4078 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4079 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4080 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4082 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4083 let logger = test_utils::TestLogger::new();
4085 let our_payment_hash = if send_partial_mpp {
4086 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
4087 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(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
4088 let (_, our_payment_hash) = get_payment_preimage_hash!(&nodes[0]);
4089 let payment_secret = PaymentSecret([0xdb; 32]);
4090 // Use the utility function send_payment_along_path to send the payment with MPP data which
4091 // indicates there are more HTLCs coming.
4092 nodes[0].node.send_payment_along_path(&route.paths[0], &our_payment_hash, &Some(payment_secret), 200000, CHAN_CONFIRM_DEPTH).unwrap();
4093 check_added_monitors!(nodes[0], 1);
4094 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
4095 assert_eq!(events.len(), 1);
4096 // Now do the relevant commitment_signed/RAA dances along the path, noting that the final
4097 // hop should *not* yet generate any PaymentReceived event(s).
4098 pass_along_path(&nodes[0], &[&nodes[1]], 100000, our_payment_hash, Some(payment_secret), events.drain(..).next().unwrap(), false);
4101 route_payment(&nodes[0], &[&nodes[1]], 100000).1
4104 let mut block = Block {
4105 header: BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
4108 connect_block(&nodes[0], &block, 101);
4109 connect_block(&nodes[1], &block, 101);
4110 for i in 102..TEST_FINAL_CLTV + 100 + 1 - CLTV_CLAIM_BUFFER - LATENCY_GRACE_PERIOD_BLOCKS {
4111 block.header.prev_blockhash = block.block_hash();
4112 connect_block(&nodes[0], &block, i);
4113 connect_block(&nodes[1], &block, i);
4116 expect_pending_htlcs_forwardable!(nodes[1]);
4118 check_added_monitors!(nodes[1], 1);
4119 let htlc_timeout_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
4120 assert!(htlc_timeout_updates.update_add_htlcs.is_empty());
4121 assert_eq!(htlc_timeout_updates.update_fail_htlcs.len(), 1);
4122 assert!(htlc_timeout_updates.update_fail_malformed_htlcs.is_empty());
4123 assert!(htlc_timeout_updates.update_fee.is_none());
4125 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_timeout_updates.update_fail_htlcs[0]);
4126 commitment_signed_dance!(nodes[0], nodes[1], htlc_timeout_updates.commitment_signed, false);
4127 // 100_000 msat as u64, followed by a height of 123 as u32
4128 let mut expected_failure_data = byte_utils::be64_to_array(100_000).to_vec();
4129 expected_failure_data.extend_from_slice(&byte_utils::be32_to_array(123));
4130 expect_payment_failed!(nodes[0], our_payment_hash, true, 0x4000 | 15, &expected_failure_data[..]);
4134 fn test_htlc_timeout() {
4135 do_test_htlc_timeout(true);
4136 do_test_htlc_timeout(false);
4139 fn do_test_holding_cell_htlc_add_timeouts(forwarded_htlc: bool) {
4140 // Tests that HTLCs in the holding cell are timed out after the requisite number of blocks.
4141 let chanmon_cfgs = create_chanmon_cfgs(3);
4142 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
4143 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
4144 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
4145 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4146 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
4147 let logger = test_utils::TestLogger::new();
4149 // Route a first payment to get the 1 -> 2 channel in awaiting_raa...
4150 let (_, first_payment_hash) = get_payment_preimage_hash!(nodes[0]);
4152 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
4153 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(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
4154 nodes[1].node.send_payment(&route, first_payment_hash, &None).unwrap();
4156 assert_eq!(nodes[1].node.get_and_clear_pending_msg_events().len(), 1);
4157 check_added_monitors!(nodes[1], 1);
4159 // Now attempt to route a second payment, which should be placed in the holding cell
4160 let (_, second_payment_hash) = get_payment_preimage_hash!(nodes[0]);
4162 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
4163 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(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
4164 nodes[0].node.send_payment(&route, second_payment_hash, &None).unwrap();
4165 check_added_monitors!(nodes[0], 1);
4166 let payment_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0));
4167 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
4168 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
4169 expect_pending_htlcs_forwardable!(nodes[1]);
4170 check_added_monitors!(nodes[1], 0);
4172 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
4173 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(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
4174 nodes[1].node.send_payment(&route, second_payment_hash, &None).unwrap();
4175 check_added_monitors!(nodes[1], 0);
4178 let mut block = Block {
4179 header: BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
4182 connect_block(&nodes[1], &block, 101);
4183 for i in 102..TEST_FINAL_CLTV + 100 - CLTV_CLAIM_BUFFER - LATENCY_GRACE_PERIOD_BLOCKS {
4184 block.header.prev_blockhash = block.block_hash();
4185 connect_block(&nodes[1], &block, i);
4188 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
4189 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
4191 block.header.prev_blockhash = block.block_hash();
4192 connect_block(&nodes[1], &block, TEST_FINAL_CLTV + 100 - CLTV_CLAIM_BUFFER - LATENCY_GRACE_PERIOD_BLOCKS);
4195 expect_pending_htlcs_forwardable!(nodes[1]);
4196 check_added_monitors!(nodes[1], 1);
4197 let fail_commit = nodes[1].node.get_and_clear_pending_msg_events();
4198 assert_eq!(fail_commit.len(), 1);
4199 match fail_commit[0] {
4200 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fail_htlcs, ref commitment_signed, .. }, .. } => {
4201 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]);
4202 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, true, true);
4204 _ => unreachable!(),
4206 expect_payment_failed!(nodes[0], second_payment_hash, false);
4207 if let &MessageSendEvent::PaymentFailureNetworkUpdate { ref update } = &nodes[0].node.get_and_clear_pending_msg_events()[0] {
4209 &HTLCFailChannelUpdate::ChannelUpdateMessage { .. } => {},
4210 _ => panic!("Unexpected event"),
4213 panic!("Unexpected event");
4216 expect_payment_failed!(nodes[1], second_payment_hash, true);
4221 fn test_holding_cell_htlc_add_timeouts() {
4222 do_test_holding_cell_htlc_add_timeouts(false);
4223 do_test_holding_cell_htlc_add_timeouts(true);
4227 fn test_invalid_channel_announcement() {
4228 //Test BOLT 7 channel_announcement msg requirement for final node, gather data to build customed channel_announcement msgs
4229 let secp_ctx = Secp256k1::new();
4230 let chanmon_cfgs = create_chanmon_cfgs(2);
4231 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4232 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4233 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4235 let chan_announcement = create_chan_between_nodes(&nodes[0], &nodes[1], InitFeatures::known(), InitFeatures::known());
4237 let a_channel_lock = nodes[0].node.channel_state.lock().unwrap();
4238 let b_channel_lock = nodes[1].node.channel_state.lock().unwrap();
4239 let as_chan = a_channel_lock.by_id.get(&chan_announcement.3).unwrap();
4240 let bs_chan = b_channel_lock.by_id.get(&chan_announcement.3).unwrap();
4242 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 } );
4244 let as_bitcoin_key = as_chan.get_keys().inner.holder_channel_pubkeys.funding_pubkey;
4245 let bs_bitcoin_key = bs_chan.get_keys().inner.holder_channel_pubkeys.funding_pubkey;
4247 let as_network_key = nodes[0].node.get_our_node_id();
4248 let bs_network_key = nodes[1].node.get_our_node_id();
4250 let were_node_one = as_bitcoin_key.serialize()[..] < bs_bitcoin_key.serialize()[..];
4252 let mut chan_announcement;
4254 macro_rules! dummy_unsigned_msg {
4256 msgs::UnsignedChannelAnnouncement {
4257 features: ChannelFeatures::known(),
4258 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
4259 short_channel_id: as_chan.get_short_channel_id().unwrap(),
4260 node_id_1: if were_node_one { as_network_key } else { bs_network_key },
4261 node_id_2: if were_node_one { bs_network_key } else { as_network_key },
4262 bitcoin_key_1: if were_node_one { as_bitcoin_key } else { bs_bitcoin_key },
4263 bitcoin_key_2: if were_node_one { bs_bitcoin_key } else { as_bitcoin_key },
4264 excess_data: Vec::new(),
4269 macro_rules! sign_msg {
4270 ($unsigned_msg: expr) => {
4271 let msghash = Message::from_slice(&Sha256dHash::hash(&$unsigned_msg.encode()[..])[..]).unwrap();
4272 let as_bitcoin_sig = secp_ctx.sign(&msghash, &as_chan.get_keys().inner.funding_key);
4273 let bs_bitcoin_sig = secp_ctx.sign(&msghash, &bs_chan.get_keys().inner.funding_key);
4274 let as_node_sig = secp_ctx.sign(&msghash, &nodes[0].keys_manager.get_node_secret());
4275 let bs_node_sig = secp_ctx.sign(&msghash, &nodes[1].keys_manager.get_node_secret());
4276 chan_announcement = msgs::ChannelAnnouncement {
4277 node_signature_1 : if were_node_one { as_node_sig } else { bs_node_sig},
4278 node_signature_2 : if were_node_one { bs_node_sig } else { as_node_sig},
4279 bitcoin_signature_1: if were_node_one { as_bitcoin_sig } else { bs_bitcoin_sig },
4280 bitcoin_signature_2 : if were_node_one { bs_bitcoin_sig } else { as_bitcoin_sig },
4281 contents: $unsigned_msg
4286 let unsigned_msg = dummy_unsigned_msg!();
4287 sign_msg!(unsigned_msg);
4288 assert_eq!(nodes[0].net_graph_msg_handler.handle_channel_announcement(&chan_announcement).unwrap(), true);
4289 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 } );
4291 // Configured with Network::Testnet
4292 let mut unsigned_msg = dummy_unsigned_msg!();
4293 unsigned_msg.chain_hash = genesis_block(Network::Bitcoin).header.block_hash();
4294 sign_msg!(unsigned_msg);
4295 assert!(nodes[0].net_graph_msg_handler.handle_channel_announcement(&chan_announcement).is_err());
4297 let mut unsigned_msg = dummy_unsigned_msg!();
4298 unsigned_msg.chain_hash = BlockHash::hash(&[1,2,3,4,5,6,7,8,9]);
4299 sign_msg!(unsigned_msg);
4300 assert!(nodes[0].net_graph_msg_handler.handle_channel_announcement(&chan_announcement).is_err());
4304 fn test_no_txn_manager_serialize_deserialize() {
4305 let chanmon_cfgs = create_chanmon_cfgs(2);
4306 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4307 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4308 let logger: test_utils::TestLogger;
4309 let fee_estimator: test_utils::TestFeeEstimator;
4310 let new_chain_monitor: test_utils::TestChainMonitor;
4311 let keys_manager: test_utils::TestKeysInterface;
4312 let nodes_0_deserialized: ChannelManager<EnforcingChannelKeys, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
4313 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4315 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001, InitFeatures::known(), InitFeatures::known());
4317 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4319 let nodes_0_serialized = nodes[0].node.encode();
4320 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
4321 nodes[0].chain_monitor.chain_monitor.monitors.lock().unwrap().iter().next().unwrap().1.write_for_disk(&mut chan_0_monitor_serialized).unwrap();
4323 logger = test_utils::TestLogger::new();
4324 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
4325 new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator);
4326 nodes[0].chain_monitor = &new_chain_monitor;
4327 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
4328 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingChannelKeys>)>::read(&mut chan_0_monitor_read).unwrap();
4329 assert!(chan_0_monitor_read.is_empty());
4331 let mut nodes_0_read = &nodes_0_serialized[..];
4332 let config = UserConfig::default();
4333 keys_manager = test_utils::TestKeysInterface::new(&nodes[0].node_seed, Network::Testnet);
4334 let (_, nodes_0_deserialized_tmp) = {
4335 let mut channel_monitors = HashMap::new();
4336 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
4337 <(BlockHash, ChannelManager<EnforcingChannelKeys, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4338 default_config: config,
4339 keys_manager: &keys_manager,
4340 fee_estimator: &fee_estimator,
4341 chain_monitor: nodes[0].chain_monitor,
4342 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4347 nodes_0_deserialized = nodes_0_deserialized_tmp;
4348 assert!(nodes_0_read.is_empty());
4350 assert!(nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
4351 nodes[0].node = &nodes_0_deserialized;
4352 assert_eq!(nodes[0].node.list_channels().len(), 1);
4353 check_added_monitors!(nodes[0], 1);
4355 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4356 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
4357 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4358 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
4360 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
4361 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
4362 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
4363 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
4365 let (funding_locked, _) = create_chan_between_nodes_with_value_confirm(&nodes[0], &nodes[1], &tx);
4366 let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_locked);
4367 for node in nodes.iter() {
4368 assert!(node.net_graph_msg_handler.handle_channel_announcement(&announcement).unwrap());
4369 node.net_graph_msg_handler.handle_channel_update(&as_update).unwrap();
4370 node.net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
4373 send_payment(&nodes[0], &[&nodes[1]], 1000000, 1_000_000);
4377 fn test_manager_serialize_deserialize_events() {
4378 // This test makes sure the events field in ChannelManager survives de/serialization
4379 let chanmon_cfgs = create_chanmon_cfgs(2);
4380 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4381 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4382 let fee_estimator: test_utils::TestFeeEstimator;
4383 let logger: test_utils::TestLogger;
4384 let new_chain_monitor: test_utils::TestChainMonitor;
4385 let keys_manager: test_utils::TestKeysInterface;
4386 let nodes_0_deserialized: ChannelManager<EnforcingChannelKeys, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
4387 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4389 // Start creating a channel, but stop right before broadcasting the event message FundingBroadcastSafe
4390 let channel_value = 100000;
4391 let push_msat = 10001;
4392 let a_flags = InitFeatures::known();
4393 let b_flags = InitFeatures::known();
4394 let node_a = nodes.pop().unwrap();
4395 let node_b = nodes.pop().unwrap();
4396 node_a.node.create_channel(node_b.node.get_our_node_id(), channel_value, push_msat, 42, None).unwrap();
4397 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()));
4398 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()));
4400 let (temporary_channel_id, tx, funding_output) = create_funding_transaction(&node_a, channel_value, 42);
4402 node_a.node.funding_transaction_generated(&temporary_channel_id, funding_output);
4403 check_added_monitors!(node_a, 0);
4405 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()));
4407 let mut added_monitors = node_b.chain_monitor.added_monitors.lock().unwrap();
4408 assert_eq!(added_monitors.len(), 1);
4409 assert_eq!(added_monitors[0].0, funding_output);
4410 added_monitors.clear();
4413 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()));
4415 let mut added_monitors = node_a.chain_monitor.added_monitors.lock().unwrap();
4416 assert_eq!(added_monitors.len(), 1);
4417 assert_eq!(added_monitors[0].0, funding_output);
4418 added_monitors.clear();
4420 // Normally, this is where node_a would check for a FundingBroadcastSafe event, but the test de/serializes first instead
4425 // Start the de/seriailization process mid-channel creation to check that the channel manager will hold onto events that are serialized
4426 let nodes_0_serialized = nodes[0].node.encode();
4427 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
4428 nodes[0].chain_monitor.chain_monitor.monitors.lock().unwrap().iter().next().unwrap().1.write_for_disk(&mut chan_0_monitor_serialized).unwrap();
4430 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
4431 logger = test_utils::TestLogger::new();
4432 new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator);
4433 nodes[0].chain_monitor = &new_chain_monitor;
4434 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
4435 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingChannelKeys>)>::read(&mut chan_0_monitor_read).unwrap();
4436 assert!(chan_0_monitor_read.is_empty());
4438 let mut nodes_0_read = &nodes_0_serialized[..];
4439 let config = UserConfig::default();
4440 keys_manager = test_utils::TestKeysInterface::new(&nodes[0].node_seed, Network::Testnet);
4441 let (_, nodes_0_deserialized_tmp) = {
4442 let mut channel_monitors = HashMap::new();
4443 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
4444 <(BlockHash, ChannelManager<EnforcingChannelKeys, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4445 default_config: config,
4446 keys_manager: &keys_manager,
4447 fee_estimator: &fee_estimator,
4448 chain_monitor: nodes[0].chain_monitor,
4449 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4454 nodes_0_deserialized = nodes_0_deserialized_tmp;
4455 assert!(nodes_0_read.is_empty());
4457 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4459 assert!(nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
4460 nodes[0].node = &nodes_0_deserialized;
4462 // After deserializing, make sure the FundingBroadcastSafe event is still held by the channel manager
4463 let events_4 = nodes[0].node.get_and_clear_pending_events();
4464 assert_eq!(events_4.len(), 1);
4466 Event::FundingBroadcastSafe { ref funding_txo, user_channel_id } => {
4467 assert_eq!(user_channel_id, 42);
4468 assert_eq!(*funding_txo, funding_output);
4470 _ => panic!("Unexpected event"),
4473 // Make sure the channel is functioning as though the de/serialization never happened
4474 assert_eq!(nodes[0].node.list_channels().len(), 1);
4475 check_added_monitors!(nodes[0], 1);
4477 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4478 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
4479 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4480 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
4482 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
4483 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
4484 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
4485 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
4487 let (funding_locked, _) = create_chan_between_nodes_with_value_confirm(&nodes[0], &nodes[1], &tx);
4488 let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_locked);
4489 for node in nodes.iter() {
4490 assert!(node.net_graph_msg_handler.handle_channel_announcement(&announcement).unwrap());
4491 node.net_graph_msg_handler.handle_channel_update(&as_update).unwrap();
4492 node.net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
4495 send_payment(&nodes[0], &[&nodes[1]], 1000000, 1_000_000);
4499 fn test_simple_manager_serialize_deserialize() {
4500 let chanmon_cfgs = create_chanmon_cfgs(2);
4501 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4502 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4503 let logger: test_utils::TestLogger;
4504 let fee_estimator: test_utils::TestFeeEstimator;
4505 let new_chain_monitor: test_utils::TestChainMonitor;
4506 let keys_manager: test_utils::TestKeysInterface;
4507 let nodes_0_deserialized: ChannelManager<EnforcingChannelKeys, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
4508 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4509 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4511 let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
4512 let (_, our_payment_hash) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
4514 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4516 let nodes_0_serialized = nodes[0].node.encode();
4517 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
4518 nodes[0].chain_monitor.chain_monitor.monitors.lock().unwrap().iter().next().unwrap().1.write_for_disk(&mut chan_0_monitor_serialized).unwrap();
4520 logger = test_utils::TestLogger::new();
4521 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
4522 new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator);
4523 nodes[0].chain_monitor = &new_chain_monitor;
4524 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
4525 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingChannelKeys>)>::read(&mut chan_0_monitor_read).unwrap();
4526 assert!(chan_0_monitor_read.is_empty());
4528 let mut nodes_0_read = &nodes_0_serialized[..];
4529 keys_manager = test_utils::TestKeysInterface::new(&nodes[0].node_seed, Network::Testnet);
4530 let (_, nodes_0_deserialized_tmp) = {
4531 let mut channel_monitors = HashMap::new();
4532 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
4533 <(BlockHash, ChannelManager<EnforcingChannelKeys, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4534 default_config: UserConfig::default(),
4535 keys_manager: &keys_manager,
4536 fee_estimator: &fee_estimator,
4537 chain_monitor: nodes[0].chain_monitor,
4538 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4543 nodes_0_deserialized = nodes_0_deserialized_tmp;
4544 assert!(nodes_0_read.is_empty());
4546 assert!(nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
4547 nodes[0].node = &nodes_0_deserialized;
4548 check_added_monitors!(nodes[0], 1);
4550 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
4552 fail_payment(&nodes[0], &[&nodes[1]], our_payment_hash);
4553 claim_payment(&nodes[0], &[&nodes[1]], our_payment_preimage, 1_000_000);
4557 fn test_manager_serialize_deserialize_inconsistent_monitor() {
4558 // Test deserializing a ChannelManager with an out-of-date ChannelMonitor
4559 let chanmon_cfgs = create_chanmon_cfgs(4);
4560 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
4561 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
4562 let logger: test_utils::TestLogger;
4563 let fee_estimator: test_utils::TestFeeEstimator;
4564 let new_chain_monitor: test_utils::TestChainMonitor;
4565 let keys_manager: test_utils::TestKeysInterface;
4566 let nodes_0_deserialized: ChannelManager<EnforcingChannelKeys, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
4567 let mut nodes = create_network(4, &node_cfgs, &node_chanmgrs);
4568 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4569 create_announced_chan_between_nodes(&nodes, 2, 0, InitFeatures::known(), InitFeatures::known());
4570 let (_, _, channel_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 3, InitFeatures::known(), InitFeatures::known());
4572 let mut node_0_stale_monitors_serialized = Vec::new();
4573 for monitor in nodes[0].chain_monitor.chain_monitor.monitors.lock().unwrap().iter() {
4574 let mut writer = test_utils::TestVecWriter(Vec::new());
4575 monitor.1.write_for_disk(&mut writer).unwrap();
4576 node_0_stale_monitors_serialized.push(writer.0);
4579 let (our_payment_preimage, _) = route_payment(&nodes[2], &[&nodes[0], &nodes[1]], 1000000);
4581 // Serialize the ChannelManager here, but the monitor we keep up-to-date
4582 let nodes_0_serialized = nodes[0].node.encode();
4584 route_payment(&nodes[0], &[&nodes[3]], 1000000);
4585 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4586 nodes[2].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4587 nodes[3].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4589 // Now the ChannelMonitor (which is now out-of-sync with ChannelManager for channel w/
4591 let mut node_0_monitors_serialized = Vec::new();
4592 for monitor in nodes[0].chain_monitor.chain_monitor.monitors.lock().unwrap().iter() {
4593 let mut writer = test_utils::TestVecWriter(Vec::new());
4594 monitor.1.write_for_disk(&mut writer).unwrap();
4595 node_0_monitors_serialized.push(writer.0);
4598 logger = test_utils::TestLogger::new();
4599 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
4600 new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator);
4601 nodes[0].chain_monitor = &new_chain_monitor;
4603 let mut node_0_stale_monitors = Vec::new();
4604 for serialized in node_0_stale_monitors_serialized.iter() {
4605 let mut read = &serialized[..];
4606 let (_, monitor) = <(BlockHash, ChannelMonitor<EnforcingChannelKeys>)>::read(&mut read).unwrap();
4607 assert!(read.is_empty());
4608 node_0_stale_monitors.push(monitor);
4611 let mut node_0_monitors = Vec::new();
4612 for serialized in node_0_monitors_serialized.iter() {
4613 let mut read = &serialized[..];
4614 let (_, monitor) = <(BlockHash, ChannelMonitor<EnforcingChannelKeys>)>::read(&mut read).unwrap();
4615 assert!(read.is_empty());
4616 node_0_monitors.push(monitor);
4619 keys_manager = test_utils::TestKeysInterface::new(&nodes[0].node_seed, Network::Testnet);
4621 let mut nodes_0_read = &nodes_0_serialized[..];
4622 if let Err(msgs::DecodeError::InvalidValue) =
4623 <(BlockHash, ChannelManager<EnforcingChannelKeys, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4624 default_config: UserConfig::default(),
4625 keys_manager: &keys_manager,
4626 fee_estimator: &fee_estimator,
4627 chain_monitor: nodes[0].chain_monitor,
4628 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4630 channel_monitors: node_0_stale_monitors.iter_mut().map(|monitor| { (monitor.get_funding_txo().0, monitor) }).collect(),
4632 panic!("If the monitor(s) are stale, this indicates a bug and we should get an Err return");
4635 let mut nodes_0_read = &nodes_0_serialized[..];
4636 let (_, nodes_0_deserialized_tmp) =
4637 <(BlockHash, ChannelManager<EnforcingChannelKeys, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4638 default_config: UserConfig::default(),
4639 keys_manager: &keys_manager,
4640 fee_estimator: &fee_estimator,
4641 chain_monitor: nodes[0].chain_monitor,
4642 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4644 channel_monitors: node_0_monitors.iter_mut().map(|monitor| { (monitor.get_funding_txo().0, monitor) }).collect(),
4646 nodes_0_deserialized = nodes_0_deserialized_tmp;
4647 assert!(nodes_0_read.is_empty());
4649 { // Channel close should result in a commitment tx and an HTLC tx
4650 let txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
4651 assert_eq!(txn.len(), 2);
4652 assert_eq!(txn[0].input[0].previous_output.txid, funding_tx.txid());
4653 assert_eq!(txn[1].input[0].previous_output.txid, txn[0].txid());
4656 for monitor in node_0_monitors.drain(..) {
4657 assert!(nodes[0].chain_monitor.watch_channel(monitor.get_funding_txo().0, monitor).is_ok());
4658 check_added_monitors!(nodes[0], 1);
4660 nodes[0].node = &nodes_0_deserialized;
4662 // nodes[1] and nodes[2] have no lost state with nodes[0]...
4663 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
4664 reconnect_nodes(&nodes[0], &nodes[2], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
4665 //... and we can even still claim the payment!
4666 claim_payment(&nodes[2], &[&nodes[0], &nodes[1]], our_payment_preimage, 1_000_000);
4668 nodes[3].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4669 let reestablish = get_event_msg!(nodes[3], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
4670 nodes[0].node.peer_connected(&nodes[3].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4671 nodes[0].node.handle_channel_reestablish(&nodes[3].node.get_our_node_id(), &reestablish);
4672 let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
4673 assert_eq!(msg_events.len(), 1);
4674 if let MessageSendEvent::HandleError { ref action, .. } = msg_events[0] {
4676 &ErrorAction::SendErrorMessage { ref msg } => {
4677 assert_eq!(msg.channel_id, channel_id);
4679 _ => panic!("Unexpected event!"),
4684 macro_rules! check_spendable_outputs {
4685 ($node: expr, $der_idx: expr, $keysinterface: expr, $chan_value: expr) => {
4687 let events = $node.chain_monitor.chain_monitor.get_and_clear_pending_events();
4688 let mut txn = Vec::new();
4689 for event in events {
4691 Event::SpendableOutputs { ref outputs } => {
4692 for outp in outputs {
4694 SpendableOutputDescriptor::StaticOutputCounterpartyPayment { ref outpoint, ref output, ref key_derivation_params } => {
4696 previous_output: outpoint.into_bitcoin_outpoint(),
4697 script_sig: Script::new(),
4699 witness: Vec::new(),
4702 script_pubkey: Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(),
4703 value: output.value,
4705 let mut spend_tx = Transaction {
4711 let secp_ctx = Secp256k1::new();
4712 let keys = $keysinterface.derive_channel_keys($chan_value, key_derivation_params.0, key_derivation_params.1);
4713 let remotepubkey = keys.pubkeys().payment_point;
4714 let witness_script = Address::p2pkh(&::bitcoin::PublicKey{compressed: true, key: remotepubkey}, Network::Testnet).script_pubkey();
4715 let sighash = Message::from_slice(&bip143::SigHashCache::new(&spend_tx).signature_hash(0, &witness_script, output.value, SigHashType::All)[..]).unwrap();
4716 let remotesig = secp_ctx.sign(&sighash, &keys.inner.payment_key);
4717 spend_tx.input[0].witness.push(remotesig.serialize_der().to_vec());
4718 spend_tx.input[0].witness[0].push(SigHashType::All as u8);
4719 spend_tx.input[0].witness.push(remotepubkey.serialize().to_vec());
4722 SpendableOutputDescriptor::DynamicOutputP2WSH { ref outpoint, ref per_commitment_point, ref to_self_delay, ref output, ref key_derivation_params, ref revocation_pubkey } => {
4724 previous_output: outpoint.into_bitcoin_outpoint(),
4725 script_sig: Script::new(),
4726 sequence: *to_self_delay as u32,
4727 witness: Vec::new(),
4730 script_pubkey: Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(),
4731 value: output.value,
4733 let mut spend_tx = Transaction {
4739 let secp_ctx = Secp256k1::new();
4740 let keys = $keysinterface.derive_channel_keys($chan_value, key_derivation_params.0, key_derivation_params.1);
4741 if let Ok(delayed_payment_key) = chan_utils::derive_private_key(&secp_ctx, &per_commitment_point, &keys.inner.delayed_payment_base_key) {
4743 let delayed_payment_pubkey = PublicKey::from_secret_key(&secp_ctx, &delayed_payment_key);
4744 let witness_script = chan_utils::get_revokeable_redeemscript(revocation_pubkey, *to_self_delay, &delayed_payment_pubkey);
4745 let sighash = Message::from_slice(&bip143::SigHashCache::new(&spend_tx).signature_hash(0, &witness_script, output.value, SigHashType::All)[..]).unwrap();
4746 let local_delayedsig = secp_ctx.sign(&sighash, &delayed_payment_key);
4747 spend_tx.input[0].witness.push(local_delayedsig.serialize_der().to_vec());
4748 spend_tx.input[0].witness[0].push(SigHashType::All as u8);
4749 spend_tx.input[0].witness.push(vec!()); //MINIMALIF
4750 spend_tx.input[0].witness.push(witness_script.clone().into_bytes());
4754 SpendableOutputDescriptor::StaticOutput { ref outpoint, ref output } => {
4755 let secp_ctx = Secp256k1::new();
4757 previous_output: outpoint.into_bitcoin_outpoint(),
4758 script_sig: Script::new(),
4760 witness: Vec::new(),
4763 script_pubkey: Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(),
4764 value: output.value,
4766 let mut spend_tx = Transaction {
4770 output: vec![outp.clone()],
4773 match ExtendedPrivKey::new_master(Network::Testnet, &$node.node_seed) {
4775 match master_key.ckd_priv(&secp_ctx, ChildNumber::from_hardened_idx($der_idx).expect("key space exhausted")) {
4777 Err(_) => panic!("Your RNG is busted"),
4780 Err(_) => panic!("Your rng is busted"),
4783 let pubkey = ExtendedPubKey::from_private(&secp_ctx, &secret).public_key;
4784 let witness_script = Address::p2pkh(&pubkey, Network::Testnet).script_pubkey();
4785 let sighash = Message::from_slice(&bip143::SigHashCache::new(&spend_tx).signature_hash(0, &witness_script, output.value, SigHashType::All)[..]).unwrap();
4786 let sig = secp_ctx.sign(&sighash, &secret.private_key.key);
4787 spend_tx.input[0].witness.push(sig.serialize_der().to_vec());
4788 spend_tx.input[0].witness[0].push(SigHashType::All as u8);
4789 spend_tx.input[0].witness.push(pubkey.key.serialize().to_vec());
4795 _ => panic!("Unexpected event"),
4804 fn test_claim_sizeable_push_msat() {
4805 // Incidentally test SpendableOutput event generation due to detection of to_local output on commitment tx
4806 let chanmon_cfgs = create_chanmon_cfgs(2);
4807 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4808 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4809 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4811 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 99000000, InitFeatures::known(), InitFeatures::known());
4812 nodes[1].node.force_close_channel(&chan.2);
4813 check_closed_broadcast!(nodes[1], false);
4814 check_added_monitors!(nodes[1], 1);
4815 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
4816 assert_eq!(node_txn.len(), 1);
4817 check_spends!(node_txn[0], chan.3);
4818 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
4820 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4821 connect_block(&nodes[1], &Block { header, txdata: vec![node_txn[0].clone()] }, 0);
4822 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1, 1, true, header.block_hash());
4824 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4825 assert_eq!(spend_txn.len(), 1);
4826 check_spends!(spend_txn[0], node_txn[0]);
4830 fn test_claim_on_remote_sizeable_push_msat() {
4831 // Same test as previous, just test on remote commitment tx, as per_commitment_point registration changes following you're funder/fundee and
4832 // to_remote output is encumbered by a P2WPKH
4833 let chanmon_cfgs = create_chanmon_cfgs(2);
4834 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4835 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4836 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4838 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 99000000, InitFeatures::known(), InitFeatures::known());
4839 nodes[0].node.force_close_channel(&chan.2);
4840 check_closed_broadcast!(nodes[0], false);
4841 check_added_monitors!(nodes[0], 1);
4843 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
4844 assert_eq!(node_txn.len(), 1);
4845 check_spends!(node_txn[0], chan.3);
4846 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
4848 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4849 connect_block(&nodes[1], &Block { header, txdata: vec![node_txn[0].clone()] }, 0);
4850 check_closed_broadcast!(nodes[1], false);
4851 check_added_monitors!(nodes[1], 1);
4852 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1, 1, true, header.block_hash());
4854 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4855 assert_eq!(spend_txn.len(), 2);
4856 assert_eq!(spend_txn[0], spend_txn[1]);
4857 check_spends!(spend_txn[0], node_txn[0]);
4861 fn test_claim_on_remote_revoked_sizeable_push_msat() {
4862 // Same test as previous, just test on remote revoked commitment tx, as per_commitment_point registration changes following you're funder/fundee and
4863 // to_remote output is encumbered by a P2WPKH
4865 let chanmon_cfgs = create_chanmon_cfgs(2);
4866 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4867 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4868 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4870 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 59000000, InitFeatures::known(), InitFeatures::known());
4871 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
4872 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan.2);
4873 assert_eq!(revoked_local_txn[0].input.len(), 1);
4874 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan.3.txid());
4876 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 3_000_000);
4877 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4878 connect_block(&nodes[1], &Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 0);
4879 check_closed_broadcast!(nodes[1], false);
4880 check_added_monitors!(nodes[1], 1);
4882 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
4883 let header_1 = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4884 connect_block(&nodes[1], &Block { header: header_1, txdata: vec![node_txn[0].clone()] }, 1);
4885 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1, 1, true, header.block_hash());
4887 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4888 assert_eq!(spend_txn.len(), 3);
4889 assert_eq!(spend_txn[0], spend_txn[1]); // to_remote output on revoked remote commitment_tx
4890 check_spends!(spend_txn[0], revoked_local_txn[0]);
4891 check_spends!(spend_txn[2], node_txn[0]);
4895 fn test_static_spendable_outputs_preimage_tx() {
4896 let chanmon_cfgs = create_chanmon_cfgs(2);
4897 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4898 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4899 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4901 // Create some initial channels
4902 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4904 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
4906 let commitment_tx = get_local_commitment_txn!(nodes[0], chan_1.2);
4907 assert_eq!(commitment_tx[0].input.len(), 1);
4908 assert_eq!(commitment_tx[0].input[0].previous_output.txid, chan_1.3.txid());
4910 // Settle A's commitment tx on B's chain
4911 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4912 assert!(nodes[1].node.claim_funds(payment_preimage, &None, 3_000_000));
4913 check_added_monitors!(nodes[1], 1);
4914 connect_block(&nodes[1], &Block { header, txdata: vec![commitment_tx[0].clone()] }, 1);
4915 check_added_monitors!(nodes[1], 1);
4916 let events = nodes[1].node.get_and_clear_pending_msg_events();
4918 MessageSendEvent::UpdateHTLCs { .. } => {},
4919 _ => panic!("Unexpected event"),
4922 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
4923 _ => panic!("Unexepected event"),
4926 // Check B's monitor was able to send back output descriptor event for preimage tx on A's commitment tx
4927 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); // ChannelManager : 2 (local commitment tx + HTLC-Success), ChannelMonitor: preimage tx
4928 assert_eq!(node_txn.len(), 3);
4929 check_spends!(node_txn[0], commitment_tx[0]);
4930 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
4931 check_spends!(node_txn[1], chan_1.3);
4932 check_spends!(node_txn[2], node_txn[1]);
4934 let header_1 = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4935 connect_block(&nodes[1], &Block { header: header_1, txdata: vec![node_txn[0].clone()] }, 1);
4936 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1, 1, true, header.block_hash());
4938 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4939 assert_eq!(spend_txn.len(), 1);
4940 check_spends!(spend_txn[0], node_txn[0]);
4944 fn test_static_spendable_outputs_timeout_tx() {
4945 let chanmon_cfgs = create_chanmon_cfgs(2);
4946 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4947 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4948 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4950 // Create some initial channels
4951 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4953 // Rebalance the network a bit by relaying one payment through all the channels ...
4954 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
4956 let (_, our_payment_hash) = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3_000_000);
4958 let commitment_tx = get_local_commitment_txn!(nodes[0], chan_1.2);
4959 assert_eq!(commitment_tx[0].input.len(), 1);
4960 assert_eq!(commitment_tx[0].input[0].previous_output.txid, chan_1.3.txid());
4962 // Settle A's commitment tx on B' chain
4963 let header = BlockHeader { version: 0x2000_0000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
4964 connect_block(&nodes[1], &Block { header, txdata: vec![commitment_tx[0].clone()] }, 0);
4965 check_added_monitors!(nodes[1], 1);
4966 let events = nodes[1].node.get_and_clear_pending_msg_events();
4968 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
4969 _ => panic!("Unexpected event"),
4972 // Check B's monitor was able to send back output descriptor event for timeout tx on A's commitment tx
4973 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
4974 assert_eq!(node_txn.len(), 3); // ChannelManager : 2 (local commitent tx + HTLC-timeout), ChannelMonitor: timeout tx
4975 check_spends!(node_txn[0], commitment_tx[0].clone());
4976 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
4977 check_spends!(node_txn[1], chan_1.3.clone());
4978 check_spends!(node_txn[2], node_txn[1]);
4980 let header_1 = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4981 connect_block(&nodes[1], &Block { header: header_1, txdata: vec![node_txn[0].clone()] }, 1);
4982 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1, 1, true, header.block_hash());
4983 expect_payment_failed!(nodes[1], our_payment_hash, true);
4985 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4986 assert_eq!(spend_txn.len(), 3); // SpendableOutput: remote_commitment_tx.to_remote (*2), timeout_tx.output (*1)
4987 check_spends!(spend_txn[2], node_txn[0].clone());
4991 fn test_static_spendable_outputs_justice_tx_revoked_commitment_tx() {
4992 let chanmon_cfgs = create_chanmon_cfgs(2);
4993 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4994 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4995 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4997 // Create some initial channels
4998 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5000 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
5001 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
5002 assert_eq!(revoked_local_txn[0].input.len(), 1);
5003 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
5005 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 3_000_000);
5007 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5008 connect_block(&nodes[1], &Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 0);
5009 check_closed_broadcast!(nodes[1], false);
5010 check_added_monitors!(nodes[1], 1);
5012 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5013 assert_eq!(node_txn.len(), 2);
5014 assert_eq!(node_txn[0].input.len(), 2);
5015 check_spends!(node_txn[0], revoked_local_txn[0]);
5017 let header_1 = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5018 connect_block(&nodes[1], &Block { header: header_1, txdata: vec![node_txn[0].clone()] }, 1);
5019 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1, 1, true, header.block_hash());
5021 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
5022 assert_eq!(spend_txn.len(), 1);
5023 check_spends!(spend_txn[0], node_txn[0]);
5027 fn test_static_spendable_outputs_justice_tx_revoked_htlc_timeout_tx() {
5028 let chanmon_cfgs = create_chanmon_cfgs(2);
5029 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5030 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5031 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5033 // Create some initial channels
5034 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5036 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
5037 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
5038 assert_eq!(revoked_local_txn[0].input.len(), 1);
5039 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
5041 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 3_000_000);
5043 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5044 // A will generate HTLC-Timeout from revoked commitment tx
5045 connect_block(&nodes[0], &Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
5046 check_closed_broadcast!(nodes[0], false);
5047 check_added_monitors!(nodes[0], 1);
5049 let revoked_htlc_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
5050 assert_eq!(revoked_htlc_txn.len(), 2);
5051 assert_eq!(revoked_htlc_txn[0].input.len(), 1);
5052 assert_eq!(revoked_htlc_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
5053 check_spends!(revoked_htlc_txn[0], revoked_local_txn[0]);
5054 check_spends!(revoked_htlc_txn[1], chan_1.3);
5056 // B will generate justice tx from A's revoked commitment/HTLC tx
5057 connect_block(&nodes[1], &Block { header, txdata: vec![revoked_local_txn[0].clone(), revoked_htlc_txn[0].clone()] }, 0);
5058 check_closed_broadcast!(nodes[1], false);
5059 check_added_monitors!(nodes[1], 1);
5061 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5062 assert_eq!(node_txn.len(), 3); // ChannelMonitor: bogus justice tx, justice tx on revoked outputs, ChannelManager: local commitment tx
5063 // The first transaction generated is bogus - it spends both outputs of revoked_local_txn[0]
5064 // including the one already spent by revoked_htlc_txn[0]. That's OK, we'll spend with valid
5065 // transactions next...
5066 assert_eq!(node_txn[0].input.len(), 3);
5067 check_spends!(node_txn[0], revoked_local_txn[0], revoked_htlc_txn[0]);
5069 assert_eq!(node_txn[1].input.len(), 2);
5070 check_spends!(node_txn[1], revoked_local_txn[0], revoked_htlc_txn[0]);
5071 if node_txn[1].input[1].previous_output.txid == revoked_htlc_txn[0].txid() {
5072 assert_ne!(node_txn[1].input[0].previous_output, revoked_htlc_txn[0].input[0].previous_output);
5074 assert_eq!(node_txn[1].input[0].previous_output.txid, revoked_htlc_txn[0].txid());
5075 assert_ne!(node_txn[1].input[1].previous_output, revoked_htlc_txn[0].input[0].previous_output);
5078 assert_eq!(node_txn[2].input.len(), 1);
5079 check_spends!(node_txn[2], chan_1.3);
5081 let header_1 = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5082 connect_block(&nodes[1], &Block { header: header_1, txdata: vec![node_txn[1].clone()] }, 1);
5083 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1, 1, true, header.block_hash());
5085 // Check B's ChannelMonitor was able to generate the right spendable output descriptor
5086 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
5087 assert_eq!(spend_txn.len(), 1);
5088 assert_eq!(spend_txn[0].input.len(), 1);
5089 check_spends!(spend_txn[0], node_txn[1]);
5093 fn test_static_spendable_outputs_justice_tx_revoked_htlc_success_tx() {
5094 let chanmon_cfgs = create_chanmon_cfgs(2);
5095 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5096 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5097 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5099 // Create some initial channels
5100 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5102 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
5103 let revoked_local_txn = get_local_commitment_txn!(nodes[1], chan_1.2);
5104 assert_eq!(revoked_local_txn[0].input.len(), 1);
5105 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
5107 // The to-be-revoked commitment tx should have one HTLC and one to_remote output
5108 assert_eq!(revoked_local_txn[0].output.len(), 2);
5110 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 3_000_000);
5112 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5113 // B will generate HTLC-Success from revoked commitment tx
5114 connect_block(&nodes[1], &Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
5115 check_closed_broadcast!(nodes[1], false);
5116 check_added_monitors!(nodes[1], 1);
5117 let revoked_htlc_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5119 assert_eq!(revoked_htlc_txn.len(), 2);
5120 assert_eq!(revoked_htlc_txn[0].input.len(), 1);
5121 assert_eq!(revoked_htlc_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5122 check_spends!(revoked_htlc_txn[0], revoked_local_txn[0]);
5124 // Check that the unspent (of two) outputs on revoked_local_txn[0] is a P2WPKH:
5125 let unspent_local_txn_output = revoked_htlc_txn[0].input[0].previous_output.vout as usize ^ 1;
5126 assert_eq!(revoked_local_txn[0].output[unspent_local_txn_output].script_pubkey.len(), 2 + 20); // P2WPKH
5128 // A will generate justice tx from B's revoked commitment/HTLC tx
5129 connect_block(&nodes[0], &Block { header, txdata: vec![revoked_local_txn[0].clone(), revoked_htlc_txn[0].clone()] }, 1);
5130 check_closed_broadcast!(nodes[0], false);
5131 check_added_monitors!(nodes[0], 1);
5133 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
5134 assert_eq!(node_txn.len(), 3); // ChannelMonitor: justice tx on revoked commitment, justice tx on revoked HTLC-success, ChannelManager: local commitment tx
5136 // The first transaction generated is bogus - it spends both outputs of revoked_local_txn[0]
5137 // including the one already spent by revoked_htlc_txn[0]. That's OK, we'll spend with valid
5138 // transactions next...
5139 assert_eq!(node_txn[0].input.len(), 2);
5140 check_spends!(node_txn[0], revoked_local_txn[0], revoked_htlc_txn[0]);
5141 if node_txn[0].input[1].previous_output.txid == revoked_htlc_txn[0].txid() {
5142 assert_eq!(node_txn[0].input[0].previous_output, revoked_htlc_txn[0].input[0].previous_output);
5144 assert_eq!(node_txn[0].input[0].previous_output.txid, revoked_htlc_txn[0].txid());
5145 assert_eq!(node_txn[0].input[1].previous_output, revoked_htlc_txn[0].input[0].previous_output);
5148 assert_eq!(node_txn[1].input.len(), 1);
5149 check_spends!(node_txn[1], revoked_htlc_txn[0]);
5151 check_spends!(node_txn[2], chan_1.3);
5153 let header_1 = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5154 connect_block(&nodes[0], &Block { header: header_1, txdata: vec![node_txn[1].clone()] }, 1);
5155 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1, 1, true, header.block_hash());
5157 // Note that nodes[0]'s tx_broadcaster is still locked, so if we get here the channelmonitor
5158 // didn't try to generate any new transactions.
5160 // Check A's ChannelMonitor was able to generate the right spendable output descriptor
5161 let spend_txn = check_spendable_outputs!(nodes[0], 1, node_cfgs[0].keys_manager, 100000);
5162 assert_eq!(spend_txn.len(), 3); // Duplicated SpendableOutput due to block rescan after revoked htlc output tracking
5163 assert_eq!(spend_txn[0], spend_txn[1]);
5164 assert_eq!(spend_txn[0].input.len(), 1);
5165 check_spends!(spend_txn[0], revoked_local_txn[0]); // spending to_remote output from revoked local tx
5166 assert_ne!(spend_txn[0].input[0].previous_output, revoked_htlc_txn[0].input[0].previous_output);
5167 check_spends!(spend_txn[2], node_txn[1]); // spending justice tx output on the htlc success tx
5171 fn test_onchain_to_onchain_claim() {
5172 // Test that in case of channel closure, we detect the state of output and claim HTLC
5173 // on downstream peer's remote commitment tx.
5174 // First, have C claim an HTLC against its own latest commitment transaction.
5175 // Then, broadcast these to B, which should update the monitor downstream on the A<->B
5177 // Finally, check that B will claim the HTLC output if A's latest commitment transaction
5180 let chanmon_cfgs = create_chanmon_cfgs(3);
5181 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
5182 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
5183 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
5185 // Create some initial channels
5186 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5187 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
5189 // Rebalance the network a bit by relaying one payment through all the channels ...
5190 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000, 8_000_000);
5191 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000, 8_000_000);
5193 let (payment_preimage, _payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
5194 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
5195 let commitment_tx = get_local_commitment_txn!(nodes[2], chan_2.2);
5196 check_spends!(commitment_tx[0], chan_2.3);
5197 nodes[2].node.claim_funds(payment_preimage, &None, 3_000_000);
5198 check_added_monitors!(nodes[2], 1);
5199 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
5200 assert!(updates.update_add_htlcs.is_empty());
5201 assert!(updates.update_fail_htlcs.is_empty());
5202 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
5203 assert!(updates.update_fail_malformed_htlcs.is_empty());
5205 connect_block(&nodes[2], &Block { header, txdata: vec![commitment_tx[0].clone()]}, 1);
5206 check_closed_broadcast!(nodes[2], false);
5207 check_added_monitors!(nodes[2], 1);
5209 let c_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 2 (commitment tx, HTLC-Success tx), ChannelMonitor : 1 (HTLC-Success tx)
5210 assert_eq!(c_txn.len(), 3);
5211 assert_eq!(c_txn[0], c_txn[2]);
5212 assert_eq!(commitment_tx[0], c_txn[1]);
5213 check_spends!(c_txn[1], chan_2.3);
5214 check_spends!(c_txn[2], c_txn[1]);
5215 assert_eq!(c_txn[1].input[0].witness.clone().last().unwrap().len(), 71);
5216 assert_eq!(c_txn[2].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5217 assert!(c_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
5218 assert_eq!(c_txn[0].lock_time, 0); // Success tx
5220 // 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
5221 connect_block(&nodes[1], &Block { header, txdata: vec![c_txn[1].clone(), c_txn[2].clone()]}, 1);
5223 let mut b_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5224 // ChannelMonitor: claim tx, ChannelManager: local commitment tx + HTLC-timeout tx
5225 assert_eq!(b_txn.len(), 3);
5226 check_spends!(b_txn[1], chan_2.3); // B local commitment tx, issued by ChannelManager
5227 check_spends!(b_txn[2], b_txn[1]); // HTLC-Timeout on B local commitment tx, issued by ChannelManager
5228 assert_eq!(b_txn[2].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
5229 assert!(b_txn[2].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
5230 assert_ne!(b_txn[2].lock_time, 0); // Timeout tx
5231 check_spends!(b_txn[0], c_txn[1]); // timeout tx on C remote commitment tx, issued by ChannelMonitor, * 2 due to block rescan
5232 assert_eq!(b_txn[0].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5233 assert!(b_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
5234 assert_ne!(b_txn[2].lock_time, 0); // Timeout tx
5237 check_added_monitors!(nodes[1], 1);
5238 let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
5239 check_added_monitors!(nodes[1], 1);
5240 match msg_events[0] {
5241 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
5242 _ => panic!("Unexpected event"),
5244 match msg_events[1] {
5245 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, .. } } => {
5246 assert!(update_add_htlcs.is_empty());
5247 assert!(update_fail_htlcs.is_empty());
5248 assert_eq!(update_fulfill_htlcs.len(), 1);
5249 assert!(update_fail_malformed_htlcs.is_empty());
5250 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
5252 _ => panic!("Unexpected event"),
5254 // Broadcast A's commitment tx on B's chain to see if we are able to claim inbound HTLC with our HTLC-Success tx
5255 let commitment_tx = get_local_commitment_txn!(nodes[0], chan_1.2);
5256 connect_block(&nodes[1], &Block { header, txdata: vec![commitment_tx[0].clone()]}, 1);
5257 let b_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5258 // ChannelMonitor: HTLC-Success tx, ChannelManager: local commitment tx + HTLC-Success tx
5259 assert_eq!(b_txn.len(), 3);
5260 check_spends!(b_txn[1], chan_1.3);
5261 check_spends!(b_txn[2], b_txn[1]);
5262 check_spends!(b_txn[0], commitment_tx[0]);
5263 assert_eq!(b_txn[0].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
5264 assert!(b_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
5265 assert_eq!(b_txn[0].lock_time, 0); // Success tx
5267 check_closed_broadcast!(nodes[1], false);
5268 check_added_monitors!(nodes[1], 1);
5272 fn test_duplicate_payment_hash_one_failure_one_success() {
5273 // Topology : A --> B --> C
5274 // We route 2 payments with same hash between B and C, one will be timeout, the other successfully claim
5275 let chanmon_cfgs = create_chanmon_cfgs(3);
5276 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
5277 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
5278 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
5280 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5281 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
5283 let (our_payment_preimage, duplicate_payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 900000);
5284 *nodes[0].network_payment_count.borrow_mut() -= 1;
5285 assert_eq!(route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 900000).1, duplicate_payment_hash);
5287 let commitment_txn = get_local_commitment_txn!(nodes[2], chan_2.2);
5288 assert_eq!(commitment_txn[0].input.len(), 1);
5289 check_spends!(commitment_txn[0], chan_2.3);
5291 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5292 connect_block(&nodes[1], &Block { header, txdata: vec![commitment_txn[0].clone()] }, 1);
5293 check_closed_broadcast!(nodes[1], false);
5294 check_added_monitors!(nodes[1], 1);
5296 let htlc_timeout_tx;
5297 { // Extract one of the two HTLC-Timeout transaction
5298 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5299 // ChannelMonitor: timeout tx * 2, ChannelManager: local commitment tx + HTLC-timeout * 2
5300 assert_eq!(node_txn.len(), 5);
5301 check_spends!(node_txn[0], commitment_txn[0]);
5302 assert_eq!(node_txn[0].input.len(), 1);
5303 check_spends!(node_txn[1], commitment_txn[0]);
5304 assert_eq!(node_txn[1].input.len(), 1);
5305 assert_ne!(node_txn[0].input[0], node_txn[1].input[0]);
5306 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5307 assert_eq!(node_txn[1].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5308 check_spends!(node_txn[2], chan_2.3);
5309 check_spends!(node_txn[3], node_txn[2]);
5310 check_spends!(node_txn[4], node_txn[2]);
5311 htlc_timeout_tx = node_txn[1].clone();
5314 nodes[2].node.claim_funds(our_payment_preimage, &None, 900_000);
5315 connect_block(&nodes[2], &Block { header, txdata: vec![commitment_txn[0].clone()] }, 1);
5316 check_added_monitors!(nodes[2], 3);
5317 let events = nodes[2].node.get_and_clear_pending_msg_events();
5319 MessageSendEvent::UpdateHTLCs { .. } => {},
5320 _ => panic!("Unexpected event"),
5323 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
5324 _ => panic!("Unexepected event"),
5326 let htlc_success_txn: Vec<_> = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
5327 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)
5328 check_spends!(htlc_success_txn[2], chan_2.3);
5329 check_spends!(htlc_success_txn[3], htlc_success_txn[2]);
5330 check_spends!(htlc_success_txn[4], htlc_success_txn[2]);
5331 assert_eq!(htlc_success_txn[0], htlc_success_txn[3]);
5332 assert_eq!(htlc_success_txn[0].input.len(), 1);
5333 assert_eq!(htlc_success_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5334 assert_eq!(htlc_success_txn[1], htlc_success_txn[4]);
5335 assert_eq!(htlc_success_txn[1].input.len(), 1);
5336 assert_eq!(htlc_success_txn[1].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5337 assert_ne!(htlc_success_txn[0].input[0], htlc_success_txn[1].input[0]);
5338 check_spends!(htlc_success_txn[0], commitment_txn[0]);
5339 check_spends!(htlc_success_txn[1], commitment_txn[0]);
5341 connect_block(&nodes[1], &Block { header, txdata: vec![htlc_timeout_tx] }, 200);
5342 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1, 200, true, header.block_hash());
5343 expect_pending_htlcs_forwardable!(nodes[1]);
5344 let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
5345 assert!(htlc_updates.update_add_htlcs.is_empty());
5346 assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
5347 assert_eq!(htlc_updates.update_fail_htlcs[0].htlc_id, 1);
5348 assert!(htlc_updates.update_fulfill_htlcs.is_empty());
5349 assert!(htlc_updates.update_fail_malformed_htlcs.is_empty());
5350 check_added_monitors!(nodes[1], 1);
5352 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]);
5353 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
5355 commitment_signed_dance!(nodes[0], nodes[1], &htlc_updates.commitment_signed, false, true);
5356 let events = nodes[0].node.get_and_clear_pending_msg_events();
5357 assert_eq!(events.len(), 1);
5359 MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelClosed { .. } } => {
5361 _ => { panic!("Unexpected event"); }
5364 expect_payment_failed!(nodes[0], duplicate_payment_hash, false);
5366 // Solve 2nd HTLC by broadcasting on B's chain HTLC-Success Tx from C
5367 connect_block(&nodes[1], &Block { header, txdata: vec![htlc_success_txn[0].clone()] }, 200);
5368 let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
5369 assert!(updates.update_add_htlcs.is_empty());
5370 assert!(updates.update_fail_htlcs.is_empty());
5371 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
5372 assert_eq!(updates.update_fulfill_htlcs[0].htlc_id, 0);
5373 assert!(updates.update_fail_malformed_htlcs.is_empty());
5374 check_added_monitors!(nodes[1], 1);
5376 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
5377 commitment_signed_dance!(nodes[0], nodes[1], &updates.commitment_signed, false);
5379 let events = nodes[0].node.get_and_clear_pending_events();
5381 Event::PaymentSent { ref payment_preimage } => {
5382 assert_eq!(*payment_preimage, our_payment_preimage);
5384 _ => panic!("Unexpected event"),
5389 fn test_dynamic_spendable_outputs_local_htlc_success_tx() {
5390 let chanmon_cfgs = create_chanmon_cfgs(2);
5391 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5392 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5393 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5395 // Create some initial channels
5396 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5398 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000).0;
5399 let local_txn = get_local_commitment_txn!(nodes[1], chan_1.2);
5400 assert_eq!(local_txn[0].input.len(), 1);
5401 check_spends!(local_txn[0], chan_1.3);
5403 // Give B knowledge of preimage to be able to generate a local HTLC-Success Tx
5404 nodes[1].node.claim_funds(payment_preimage, &None, 9_000_000);
5405 check_added_monitors!(nodes[1], 1);
5406 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5407 connect_block(&nodes[1], &Block { header, txdata: vec![local_txn[0].clone()] }, 1);
5408 check_added_monitors!(nodes[1], 1);
5409 let events = nodes[1].node.get_and_clear_pending_msg_events();
5411 MessageSendEvent::UpdateHTLCs { .. } => {},
5412 _ => panic!("Unexpected event"),
5415 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
5416 _ => panic!("Unexepected event"),
5419 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5420 assert_eq!(node_txn[0].input.len(), 1);
5421 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5422 check_spends!(node_txn[0], local_txn[0]);
5423 vec![node_txn[0].clone(), node_txn[2].clone()]
5426 let header_201 = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5427 connect_block(&nodes[1], &Block { header: header_201, txdata: node_txn.clone() }, 201);
5428 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1, 201, true, header_201.block_hash());
5430 // Verify that B is able to spend its own HTLC-Success tx thanks to spendable output event given back by its ChannelMonitor
5431 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
5432 assert_eq!(spend_txn.len(), 2);
5433 check_spends!(spend_txn[0], node_txn[0]);
5434 check_spends!(spend_txn[1], node_txn[1]);
5437 fn do_test_fail_backwards_unrevoked_remote_announce(deliver_last_raa: bool, announce_latest: bool) {
5438 // Test that we fail backwards the full set of HTLCs we need to when remote broadcasts an
5439 // unrevoked commitment transaction.
5440 // This includes HTLCs which were below the dust threshold as well as HTLCs which were awaiting
5441 // a remote RAA before they could be failed backwards (and combinations thereof).
5442 // We also test duplicate-hash HTLCs by adding two nodes on each side of the target nodes which
5443 // use the same payment hashes.
5444 // Thus, we use a six-node network:
5449 // And test where C fails back to A/B when D announces its latest commitment transaction
5450 let chanmon_cfgs = create_chanmon_cfgs(6);
5451 let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
5452 let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
5453 let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
5454 let logger = test_utils::TestLogger::new();
5456 create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known());
5457 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
5458 let chan = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known());
5459 create_announced_chan_between_nodes(&nodes, 3, 4, InitFeatures::known(), InitFeatures::known());
5460 create_announced_chan_between_nodes(&nodes, 3, 5, InitFeatures::known(), InitFeatures::known());
5462 // Rebalance and check output sanity...
5463 send_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 500000, 500_000);
5464 send_payment(&nodes[1], &[&nodes[2], &nodes[3], &nodes[5]], 500000, 500_000);
5465 assert_eq!(get_local_commitment_txn!(nodes[3], chan.2)[0].output.len(), 2);
5467 let ds_dust_limit = nodes[3].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().holder_dust_limit_satoshis;
5469 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
5471 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
5472 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
5473 let our_node_id = &nodes[1].node.get_our_node_id();
5474 let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), None, &Vec::new(), ds_dust_limit*1000, TEST_FINAL_CLTV, &logger).unwrap();
5476 send_along_route_with_hash(&nodes[1], route.clone(), &[&nodes[2], &nodes[3], &nodes[5]], ds_dust_limit*1000, payment_hash_1); // not added < dust limit + HTLC tx fee
5478 send_along_route_with_hash(&nodes[1], route, &[&nodes[2], &nodes[3], &nodes[5]], ds_dust_limit*1000, payment_hash_2); // not added < dust limit + HTLC tx fee
5480 let (_, payment_hash_3) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 1000000);
5482 let (_, payment_hash_4) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 1000000);
5483 let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
5485 send_along_route_with_hash(&nodes[1], route.clone(), &[&nodes[2], &nodes[3], &nodes[5]], 1000000, payment_hash_3);
5487 send_along_route_with_hash(&nodes[1], route, &[&nodes[2], &nodes[3], &nodes[5]], 1000000, payment_hash_4);
5490 let (_, payment_hash_5) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 1000000);
5492 let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), None, &Vec::new(), ds_dust_limit*1000, TEST_FINAL_CLTV, &logger).unwrap();
5493 send_along_route_with_hash(&nodes[1], route, &[&nodes[2], &nodes[3], &nodes[5]], ds_dust_limit*1000, payment_hash_5); // not added < dust limit + HTLC tx fee
5496 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
5498 let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
5499 send_along_route_with_hash(&nodes[1], route, &[&nodes[2], &nodes[3], &nodes[5]], 1000000, payment_hash_6);
5501 // Double-check that six of the new HTLC were added
5502 // We now have six HTLCs pending over the dust limit and six HTLCs under the dust limit (ie,
5503 // with to_local and to_remote outputs, 8 outputs and 6 HTLCs not included).
5504 assert_eq!(get_local_commitment_txn!(nodes[3], chan.2).len(), 1);
5505 assert_eq!(get_local_commitment_txn!(nodes[3], chan.2)[0].output.len(), 8);
5507 // Now fail back three of the over-dust-limit and three of the under-dust-limit payments in one go.
5508 // Fail 0th below-dust, 4th above-dust, 8th above-dust, 10th below-dust HTLCs
5509 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_1, &None));
5510 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_3, &None));
5511 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_5, &None));
5512 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_6, &None));
5513 check_added_monitors!(nodes[4], 0);
5514 expect_pending_htlcs_forwardable!(nodes[4]);
5515 check_added_monitors!(nodes[4], 1);
5517 let four_removes = get_htlc_update_msgs!(nodes[4], nodes[3].node.get_our_node_id());
5518 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[0]);
5519 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[1]);
5520 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[2]);
5521 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[3]);
5522 commitment_signed_dance!(nodes[3], nodes[4], four_removes.commitment_signed, false);
5524 // Fail 3rd below-dust and 7th above-dust HTLCs
5525 assert!(nodes[5].node.fail_htlc_backwards(&payment_hash_2, &None));
5526 assert!(nodes[5].node.fail_htlc_backwards(&payment_hash_4, &None));
5527 check_added_monitors!(nodes[5], 0);
5528 expect_pending_htlcs_forwardable!(nodes[5]);
5529 check_added_monitors!(nodes[5], 1);
5531 let two_removes = get_htlc_update_msgs!(nodes[5], nodes[3].node.get_our_node_id());
5532 nodes[3].node.handle_update_fail_htlc(&nodes[5].node.get_our_node_id(), &two_removes.update_fail_htlcs[0]);
5533 nodes[3].node.handle_update_fail_htlc(&nodes[5].node.get_our_node_id(), &two_removes.update_fail_htlcs[1]);
5534 commitment_signed_dance!(nodes[3], nodes[5], two_removes.commitment_signed, false);
5536 let ds_prev_commitment_tx = get_local_commitment_txn!(nodes[3], chan.2);
5538 expect_pending_htlcs_forwardable!(nodes[3]);
5539 check_added_monitors!(nodes[3], 1);
5540 let six_removes = get_htlc_update_msgs!(nodes[3], nodes[2].node.get_our_node_id());
5541 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[0]);
5542 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[1]);
5543 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[2]);
5544 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[3]);
5545 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[4]);
5546 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[5]);
5547 if deliver_last_raa {
5548 commitment_signed_dance!(nodes[2], nodes[3], six_removes.commitment_signed, false);
5550 let _cs_last_raa = commitment_signed_dance!(nodes[2], nodes[3], six_removes.commitment_signed, false, true, false, true);
5553 // D's latest commitment transaction now contains 1st + 2nd + 9th HTLCs (implicitly, they're
5554 // below the dust limit) and the 5th + 6th + 11th HTLCs. It has failed back the 0th, 3rd, 4th,
5555 // 7th, 8th, and 10th, but as we haven't yet delivered the final RAA to C, the fails haven't
5556 // propagated back to A/B yet (and D has two unrevoked commitment transactions).
5558 // We now broadcast the latest commitment transaction, which *should* result in failures for
5559 // the 0th, 1st, 2nd, 3rd, 4th, 7th, 8th, 9th, and 10th HTLCs, ie all the below-dust HTLCs and
5560 // the non-broadcast above-dust HTLCs.
5562 // Alternatively, we may broadcast the previous commitment transaction, which should only
5563 // result in failures for the below-dust HTLCs, ie the 0th, 1st, 2nd, 3rd, 9th, and 10th HTLCs.
5564 let ds_last_commitment_tx = get_local_commitment_txn!(nodes[3], chan.2);
5566 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5567 if announce_latest {
5568 connect_block(&nodes[2], &Block { header, txdata: vec![ds_last_commitment_tx[0].clone()]}, 1);
5570 connect_block(&nodes[2], &Block { header, txdata: vec![ds_prev_commitment_tx[0].clone()]}, 1);
5572 connect_blocks(&nodes[2], ANTI_REORG_DELAY - 1, 1, true, header.block_hash());
5573 check_closed_broadcast!(nodes[2], false);
5574 expect_pending_htlcs_forwardable!(nodes[2]);
5575 check_added_monitors!(nodes[2], 3);
5577 let cs_msgs = nodes[2].node.get_and_clear_pending_msg_events();
5578 assert_eq!(cs_msgs.len(), 2);
5579 let mut a_done = false;
5580 for msg in cs_msgs {
5582 MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => {
5583 // Both under-dust HTLCs and the one above-dust HTLC that we had already failed
5584 // should be failed-backwards here.
5585 let target = if *node_id == nodes[0].node.get_our_node_id() {
5586 // If announce_latest, expect 0th, 1st, 4th, 8th, 10th HTLCs, else only 0th, 1st, 10th below-dust HTLCs
5587 for htlc in &updates.update_fail_htlcs {
5588 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 });
5590 assert_eq!(updates.update_fail_htlcs.len(), if announce_latest { 5 } else { 3 });
5595 // If announce_latest, expect 2nd, 3rd, 7th, 9th HTLCs, else only 2nd, 3rd, 9th below-dust HTLCs
5596 for htlc in &updates.update_fail_htlcs {
5597 assert!(htlc.htlc_id == 1 || htlc.htlc_id == 2 || htlc.htlc_id == 5 || if announce_latest { htlc.htlc_id == 4 } else { false });
5599 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
5600 assert_eq!(updates.update_fail_htlcs.len(), if announce_latest { 4 } else { 3 });
5603 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
5604 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[1]);
5605 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[2]);
5606 if announce_latest {
5607 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[3]);
5608 if *node_id == nodes[0].node.get_our_node_id() {
5609 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[4]);
5612 commitment_signed_dance!(target, nodes[2], updates.commitment_signed, false, true);
5614 _ => panic!("Unexpected event"),
5618 let as_events = nodes[0].node.get_and_clear_pending_events();
5619 assert_eq!(as_events.len(), if announce_latest { 5 } else { 3 });
5620 let mut as_failds = HashSet::new();
5621 for event in as_events.iter() {
5622 if let &Event::PaymentFailed { ref payment_hash, ref rejected_by_dest, .. } = event {
5623 assert!(as_failds.insert(*payment_hash));
5624 if *payment_hash != payment_hash_2 {
5625 assert_eq!(*rejected_by_dest, deliver_last_raa);
5627 assert!(!rejected_by_dest);
5629 } else { panic!("Unexpected event"); }
5631 assert!(as_failds.contains(&payment_hash_1));
5632 assert!(as_failds.contains(&payment_hash_2));
5633 if announce_latest {
5634 assert!(as_failds.contains(&payment_hash_3));
5635 assert!(as_failds.contains(&payment_hash_5));
5637 assert!(as_failds.contains(&payment_hash_6));
5639 let bs_events = nodes[1].node.get_and_clear_pending_events();
5640 assert_eq!(bs_events.len(), if announce_latest { 4 } else { 3 });
5641 let mut bs_failds = HashSet::new();
5642 for event in bs_events.iter() {
5643 if let &Event::PaymentFailed { ref payment_hash, ref rejected_by_dest, .. } = event {
5644 assert!(bs_failds.insert(*payment_hash));
5645 if *payment_hash != payment_hash_1 && *payment_hash != payment_hash_5 {
5646 assert_eq!(*rejected_by_dest, deliver_last_raa);
5648 assert!(!rejected_by_dest);
5650 } else { panic!("Unexpected event"); }
5652 assert!(bs_failds.contains(&payment_hash_1));
5653 assert!(bs_failds.contains(&payment_hash_2));
5654 if announce_latest {
5655 assert!(bs_failds.contains(&payment_hash_4));
5657 assert!(bs_failds.contains(&payment_hash_5));
5659 // For each HTLC which was not failed-back by normal process (ie deliver_last_raa), we should
5660 // get a PaymentFailureNetworkUpdate. A should have gotten 4 HTLCs which were failed-back due
5661 // to unknown-preimage-etc, B should have gotten 2. Thus, in the
5662 // announce_latest && deliver_last_raa case, we should have 5-4=1 and 4-2=2
5663 // PaymentFailureNetworkUpdates.
5664 let as_msg_events = nodes[0].node.get_and_clear_pending_msg_events();
5665 assert_eq!(as_msg_events.len(), if deliver_last_raa { 1 } else if !announce_latest { 3 } else { 5 });
5666 let bs_msg_events = nodes[1].node.get_and_clear_pending_msg_events();
5667 assert_eq!(bs_msg_events.len(), if deliver_last_raa { 2 } else if !announce_latest { 3 } else { 4 });
5668 for event in as_msg_events.iter().chain(bs_msg_events.iter()) {
5670 &MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
5671 _ => panic!("Unexpected event"),
5677 fn test_fail_backwards_latest_remote_announce_a() {
5678 do_test_fail_backwards_unrevoked_remote_announce(false, true);
5682 fn test_fail_backwards_latest_remote_announce_b() {
5683 do_test_fail_backwards_unrevoked_remote_announce(true, true);
5687 fn test_fail_backwards_previous_remote_announce() {
5688 do_test_fail_backwards_unrevoked_remote_announce(false, false);
5689 // Note that true, true doesn't make sense as it implies we announce a revoked state, which is
5690 // tested for in test_commitment_revoked_fail_backward_exhaustive()
5694 fn test_dynamic_spendable_outputs_local_htlc_timeout_tx() {
5695 let chanmon_cfgs = create_chanmon_cfgs(2);
5696 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5697 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5698 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5700 // Create some initial channels
5701 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5703 let (_, our_payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000);
5704 let local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
5705 assert_eq!(local_txn[0].input.len(), 1);
5706 check_spends!(local_txn[0], chan_1.3);
5708 // Timeout HTLC on A's chain and so it can generate a HTLC-Timeout tx
5709 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5710 connect_block(&nodes[0], &Block { header, txdata: vec![local_txn[0].clone()] }, 200);
5711 check_closed_broadcast!(nodes[0], false);
5712 check_added_monitors!(nodes[0], 1);
5714 let htlc_timeout = {
5715 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
5716 assert_eq!(node_txn[0].input.len(), 1);
5717 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
5718 check_spends!(node_txn[0], local_txn[0]);
5722 let header_201 = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5723 connect_block(&nodes[0], &Block { header: header_201, txdata: vec![htlc_timeout.clone()] }, 201);
5724 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1, 201, true, header_201.block_hash());
5725 expect_payment_failed!(nodes[0], our_payment_hash, true);
5727 // Verify that A is able to spend its own HTLC-Timeout tx thanks to spendable output event given back by its ChannelMonitor
5728 let spend_txn = check_spendable_outputs!(nodes[0], 1, node_cfgs[0].keys_manager, 100000);
5729 assert_eq!(spend_txn.len(), 3);
5730 assert_eq!(spend_txn[0], spend_txn[1]);
5731 check_spends!(spend_txn[0], local_txn[0]);
5732 check_spends!(spend_txn[2], htlc_timeout);
5736 fn test_key_derivation_params() {
5737 // This test is a copy of test_dynamic_spendable_outputs_local_htlc_timeout_tx, with
5738 // a key manager rotation to test that key_derivation_params returned in DynamicOutputP2WSH
5739 // let us re-derive the channel key set to then derive a delayed_payment_key.
5741 let chanmon_cfgs = create_chanmon_cfgs(3);
5743 // We manually create the node configuration to backup the seed.
5744 let seed = [42; 32];
5745 let keys_manager = test_utils::TestKeysInterface::new(&seed, Network::Testnet);
5746 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);
5747 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, node_seed: seed };
5748 let mut node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
5749 node_cfgs.remove(0);
5750 node_cfgs.insert(0, node);
5752 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
5753 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
5755 // Create some initial channels
5756 // Create a dummy channel to advance index by one and thus test re-derivation correctness
5758 let chan_0 = create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known());
5759 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5760 assert_ne!(chan_0.3.output[0].script_pubkey, chan_1.3.output[0].script_pubkey);
5762 let (_, our_payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000);
5763 let local_txn_0 = get_local_commitment_txn!(nodes[0], chan_0.2);
5764 let local_txn_1 = get_local_commitment_txn!(nodes[0], chan_1.2);
5765 assert_eq!(local_txn_1[0].input.len(), 1);
5766 check_spends!(local_txn_1[0], chan_1.3);
5768 // We check funding pubkey are unique
5769 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]));
5770 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]));
5771 if from_0_funding_key_0 == from_1_funding_key_0
5772 || from_0_funding_key_0 == from_1_funding_key_1
5773 || from_0_funding_key_1 == from_1_funding_key_0
5774 || from_0_funding_key_1 == from_1_funding_key_1 {
5775 panic!("Funding pubkeys aren't unique");
5778 // Timeout HTLC on A's chain and so it can generate a HTLC-Timeout tx
5779 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5780 connect_block(&nodes[0], &Block { header, txdata: vec![local_txn_1[0].clone()] }, 200);
5781 check_closed_broadcast!(nodes[0], false);
5782 check_added_monitors!(nodes[0], 1);
5784 let htlc_timeout = {
5785 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
5786 assert_eq!(node_txn[0].input.len(), 1);
5787 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
5788 check_spends!(node_txn[0], local_txn_1[0]);
5792 let header_201 = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5793 connect_block(&nodes[0], &Block { header: header_201, txdata: vec![htlc_timeout.clone()] }, 201);
5794 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1, 201, true, header_201.block_hash());
5795 expect_payment_failed!(nodes[0], our_payment_hash, true);
5797 // Verify that A is able to spend its own HTLC-Timeout tx thanks to spendable output event given back by its ChannelMonitor
5798 let new_keys_manager = test_utils::TestKeysInterface::new(&seed, Network::Testnet);
5799 let spend_txn = check_spendable_outputs!(nodes[0], 1, new_keys_manager, 100000);
5800 assert_eq!(spend_txn.len(), 3);
5801 assert_eq!(spend_txn[0], spend_txn[1]);
5802 check_spends!(spend_txn[0], local_txn_1[0]);
5803 check_spends!(spend_txn[2], htlc_timeout);
5807 fn test_static_output_closing_tx() {
5808 let chanmon_cfgs = create_chanmon_cfgs(2);
5809 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5810 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5811 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5813 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5815 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
5816 let closing_tx = close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true).2;
5818 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5819 connect_block(&nodes[0], &Block { header, txdata: vec![closing_tx.clone()] }, 0);
5820 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1, 0, true, header.block_hash());
5822 let spend_txn = check_spendable_outputs!(nodes[0], 2, node_cfgs[0].keys_manager, 100000);
5823 assert_eq!(spend_txn.len(), 1);
5824 check_spends!(spend_txn[0], closing_tx);
5826 connect_block(&nodes[1], &Block { header, txdata: vec![closing_tx.clone()] }, 0);
5827 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1, 0, true, header.block_hash());
5829 let spend_txn = check_spendable_outputs!(nodes[1], 2, node_cfgs[1].keys_manager, 100000);
5830 assert_eq!(spend_txn.len(), 1);
5831 check_spends!(spend_txn[0], closing_tx);
5834 fn do_htlc_claim_local_commitment_only(use_dust: bool) {
5835 let chanmon_cfgs = create_chanmon_cfgs(2);
5836 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5837 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5838 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5839 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5841 let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1]], if use_dust { 50000 } else { 3000000 });
5843 // Claim the payment, but don't deliver A's commitment_signed, resulting in the HTLC only being
5844 // present in B's local commitment transaction, but none of A's commitment transactions.
5845 assert!(nodes[1].node.claim_funds(our_payment_preimage, &None, if use_dust { 50_000 } else { 3_000_000 }));
5846 check_added_monitors!(nodes[1], 1);
5848 let bs_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
5849 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.update_fulfill_htlcs[0]);
5850 let events = nodes[0].node.get_and_clear_pending_events();
5851 assert_eq!(events.len(), 1);
5853 Event::PaymentSent { payment_preimage } => {
5854 assert_eq!(payment_preimage, our_payment_preimage);
5856 _ => panic!("Unexpected event"),
5859 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_updates.commitment_signed);
5860 check_added_monitors!(nodes[0], 1);
5861 let as_updates = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
5862 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_updates.0);
5863 check_added_monitors!(nodes[1], 1);
5865 let mut block = Block {
5866 header: BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
5869 for i in 1..TEST_FINAL_CLTV - CLTV_CLAIM_BUFFER + CHAN_CONFIRM_DEPTH + 1 {
5870 connect_block(&nodes[1], &block, i);
5871 block.header.prev_blockhash = block.block_hash();
5873 test_txn_broadcast(&nodes[1], &chan, None, if use_dust { HTLCType::NONE } else { HTLCType::SUCCESS });
5874 check_closed_broadcast!(nodes[1], false);
5875 check_added_monitors!(nodes[1], 1);
5878 fn do_htlc_claim_current_remote_commitment_only(use_dust: bool) {
5879 let chanmon_cfgs = create_chanmon_cfgs(2);
5880 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5881 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5882 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5883 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5884 let logger = test_utils::TestLogger::new();
5886 let (_, payment_hash) = get_payment_preimage_hash!(nodes[0]);
5887 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
5888 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(), None, &Vec::new(), if use_dust { 50000 } else { 3000000 }, TEST_FINAL_CLTV, &logger).unwrap();
5889 nodes[0].node.send_payment(&route, payment_hash, &None).unwrap();
5890 check_added_monitors!(nodes[0], 1);
5892 let _as_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
5894 // As far as A is concerned, the HTLC is now present only in the latest remote commitment
5895 // transaction, however it is not in A's latest local commitment, so we can just broadcast that
5896 // to "time out" the HTLC.
5898 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5900 for i in 1..TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + CHAN_CONFIRM_DEPTH + 1 {
5901 connect_block(&nodes[0], &Block { header, txdata: Vec::new()}, i);
5902 header.prev_blockhash = header.block_hash();
5904 test_txn_broadcast(&nodes[0], &chan, None, HTLCType::NONE);
5905 check_closed_broadcast!(nodes[0], false);
5906 check_added_monitors!(nodes[0], 1);
5909 fn do_htlc_claim_previous_remote_commitment_only(use_dust: bool, check_revoke_no_close: bool) {
5910 let chanmon_cfgs = create_chanmon_cfgs(3);
5911 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
5912 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
5913 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
5914 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5916 // Fail the payment, but don't deliver A's final RAA, resulting in the HTLC only being present
5917 // in B's previous (unrevoked) commitment transaction, but none of A's commitment transactions.
5918 // Also optionally test that we *don't* fail the channel in case the commitment transaction was
5919 // actually revoked.
5920 let htlc_value = if use_dust { 50000 } else { 3000000 };
5921 let (_, our_payment_hash) = route_payment(&nodes[0], &[&nodes[1]], htlc_value);
5922 assert!(nodes[1].node.fail_htlc_backwards(&our_payment_hash, &None));
5923 expect_pending_htlcs_forwardable!(nodes[1]);
5924 check_added_monitors!(nodes[1], 1);
5926 let bs_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
5927 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.update_fail_htlcs[0]);
5928 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_updates.commitment_signed);
5929 check_added_monitors!(nodes[0], 1);
5930 let as_updates = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
5931 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_updates.0);
5932 check_added_monitors!(nodes[1], 1);
5933 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_updates.1);
5934 check_added_monitors!(nodes[1], 1);
5935 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
5937 if check_revoke_no_close {
5938 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack);
5939 check_added_monitors!(nodes[0], 1);
5942 let mut block = Block {
5943 header: BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
5946 for i in 1..TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + CHAN_CONFIRM_DEPTH + 1 {
5947 connect_block(&nodes[0], &block, i);
5948 block.header.prev_blockhash = block.block_hash();
5950 if !check_revoke_no_close {
5951 test_txn_broadcast(&nodes[0], &chan, None, HTLCType::NONE);
5952 check_closed_broadcast!(nodes[0], false);
5953 check_added_monitors!(nodes[0], 1);
5955 expect_payment_failed!(nodes[0], our_payment_hash, true);
5959 // Test that we close channels on-chain when broadcastable HTLCs reach their timeout window.
5960 // There are only a few cases to test here:
5961 // * its not really normative behavior, but we test that below-dust HTLCs "included" in
5962 // broadcastable commitment transactions result in channel closure,
5963 // * its included in an unrevoked-but-previous remote commitment transaction,
5964 // * its included in the latest remote or local commitment transactions.
5965 // We test each of the three possible commitment transactions individually and use both dust and
5967 // Note that we don't bother testing both outbound and inbound HTLC failures for each case, and we
5968 // assume they are handled the same across all six cases, as both outbound and inbound failures are
5969 // tested for at least one of the cases in other tests.
5971 fn htlc_claim_single_commitment_only_a() {
5972 do_htlc_claim_local_commitment_only(true);
5973 do_htlc_claim_local_commitment_only(false);
5975 do_htlc_claim_current_remote_commitment_only(true);
5976 do_htlc_claim_current_remote_commitment_only(false);
5980 fn htlc_claim_single_commitment_only_b() {
5981 do_htlc_claim_previous_remote_commitment_only(true, false);
5982 do_htlc_claim_previous_remote_commitment_only(false, false);
5983 do_htlc_claim_previous_remote_commitment_only(true, true);
5984 do_htlc_claim_previous_remote_commitment_only(false, true);
5989 fn bolt2_open_channel_sending_node_checks_part1() { //This test needs to be on its own as we are catching a panic
5990 let chanmon_cfgs = create_chanmon_cfgs(2);
5991 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5992 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5993 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5994 //Force duplicate channel ids
5995 for node in nodes.iter() {
5996 *node.keys_manager.override_channel_id_priv.lock().unwrap() = Some([0; 32]);
5999 // BOLT #2 spec: Sending node must ensure temporary_channel_id is unique from any other channel ID with the same peer.
6000 let channel_value_satoshis=10000;
6001 let push_msat=10001;
6002 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).unwrap();
6003 let node0_to_1_send_open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
6004 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &node0_to_1_send_open_channel);
6006 //Create a second channel with a channel_id collision
6007 assert!(nodes[0].node.create_channel(nodes[0].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).is_err());
6011 fn bolt2_open_channel_sending_node_checks_part2() {
6012 let chanmon_cfgs = create_chanmon_cfgs(2);
6013 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6014 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6015 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6017 // BOLT #2 spec: Sending node must set funding_satoshis to less than 2^24 satoshis
6018 let channel_value_satoshis=2^24;
6019 let push_msat=10001;
6020 assert!(nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).is_err());
6022 // BOLT #2 spec: Sending node must set push_msat to equal or less than 1000 * funding_satoshis
6023 let channel_value_satoshis=10000;
6024 // Test when push_msat is equal to 1000 * funding_satoshis.
6025 let push_msat=1000*channel_value_satoshis+1;
6026 assert!(nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).is_err());
6028 // BOLT #2 spec: Sending node must set set channel_reserve_satoshis greater than or equal to dust_limit_satoshis
6029 let channel_value_satoshis=10000;
6030 let push_msat=10001;
6031 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
6032 let node0_to_1_send_open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
6033 assert!(node0_to_1_send_open_channel.channel_reserve_satoshis>=node0_to_1_send_open_channel.dust_limit_satoshis);
6035 // BOLT #2 spec: Sending node must set undefined bits in channel_flags to 0
6036 // 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
6037 assert!(node0_to_1_send_open_channel.channel_flags<=1);
6039 // 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.
6040 assert!(BREAKDOWN_TIMEOUT>0);
6041 assert!(node0_to_1_send_open_channel.to_self_delay==BREAKDOWN_TIMEOUT);
6043 // BOLT #2 spec: Sending node must ensure the chain_hash value identifies the chain it wishes to open the channel within.
6044 let chain_hash=genesis_block(Network::Testnet).header.block_hash();
6045 assert_eq!(node0_to_1_send_open_channel.chain_hash,chain_hash);
6047 // 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.
6048 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.funding_pubkey.serialize()).is_ok());
6049 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.revocation_basepoint.serialize()).is_ok());
6050 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.htlc_basepoint.serialize()).is_ok());
6051 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.payment_point.serialize()).is_ok());
6052 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.delayed_payment_basepoint.serialize()).is_ok());
6055 // Test that if we fail to send an HTLC that is being freed from the holding cell, and the HTLC
6056 // originated from our node, its failure is surfaced to the user. We trigger this failure to
6057 // free the HTLC by increasing our fee while the HTLC is in the holding cell such that the HTLC
6058 // is no longer affordable once it's freed.
6060 fn test_fail_holding_cell_htlc_upon_free() {
6061 let chanmon_cfgs = create_chanmon_cfgs(2);
6062 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6063 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6064 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6065 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6066 let logger = test_utils::TestLogger::new();
6068 // First nodes[0] generates an update_fee, setting the channel's
6069 // pending_update_fee.
6070 nodes[0].node.update_fee(chan.2, get_feerate!(nodes[0], chan.2) + 20).unwrap();
6071 check_added_monitors!(nodes[0], 1);
6073 let events = nodes[0].node.get_and_clear_pending_msg_events();
6074 assert_eq!(events.len(), 1);
6075 let (update_msg, commitment_signed) = match events[0] {
6076 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
6077 (update_fee.as_ref(), commitment_signed)
6079 _ => panic!("Unexpected event"),
6082 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
6084 let mut chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6085 let channel_reserve = chan_stat.channel_reserve_msat;
6086 let feerate = get_feerate!(nodes[0], chan.2);
6088 // 2* and +1 HTLCs on the commit tx fee calculation for the fee spike reserve.
6089 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6090 let max_can_send = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 1 + 1);
6091 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6092 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(), None, &[], max_can_send, TEST_FINAL_CLTV, &logger).unwrap();
6094 // Send a payment which passes reserve checks but gets stuck in the holding cell.
6095 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6096 chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6097 assert_eq!(chan_stat.holding_cell_outbound_amount_msat, max_can_send);
6099 // Flush the pending fee update.
6100 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
6101 let (as_revoke_and_ack, _) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
6102 check_added_monitors!(nodes[1], 1);
6103 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_revoke_and_ack);
6104 check_added_monitors!(nodes[0], 1);
6106 // Upon receipt of the RAA, there will be an attempt to resend the holding cell
6107 // HTLC, but now that the fee has been raised the payment will now fail, causing
6108 // us to surface its failure to the user.
6109 chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6110 assert_eq!(chan_stat.holding_cell_outbound_amount_msat, 0);
6111 nodes[0].logger.assert_log("lightning::ln::channel".to_string(), "Freeing holding cell with 1 HTLC updates".to_string(), 1);
6112 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);
6113 nodes[0].logger.assert_log("lightning::ln::channel".to_string(), failure_log.to_string(), 1);
6115 // Check that the payment failed to be sent out.
6116 let events = nodes[0].node.get_and_clear_pending_events();
6117 assert_eq!(events.len(), 1);
6119 &Event::PaymentFailed { ref payment_hash, ref rejected_by_dest, ref error_code, ref error_data } => {
6120 assert_eq!(our_payment_hash.clone(), *payment_hash);
6121 assert_eq!(*rejected_by_dest, false);
6122 assert_eq!(*error_code, None);
6123 assert_eq!(*error_data, None);
6125 _ => panic!("Unexpected event"),
6129 // Test that if multiple HTLCs are released from the holding cell and one is
6130 // valid but the other is no longer valid upon release, the valid HTLC can be
6131 // successfully completed while the other one fails as expected.
6133 fn test_free_and_fail_holding_cell_htlcs() {
6134 let chanmon_cfgs = create_chanmon_cfgs(2);
6135 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6136 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6137 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6138 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6139 let logger = test_utils::TestLogger::new();
6141 // First nodes[0] generates an update_fee, setting the channel's
6142 // pending_update_fee.
6143 nodes[0].node.update_fee(chan.2, get_feerate!(nodes[0], chan.2) + 200).unwrap();
6144 check_added_monitors!(nodes[0], 1);
6146 let events = nodes[0].node.get_and_clear_pending_msg_events();
6147 assert_eq!(events.len(), 1);
6148 let (update_msg, commitment_signed) = match events[0] {
6149 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
6150 (update_fee.as_ref(), commitment_signed)
6152 _ => panic!("Unexpected event"),
6155 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
6157 let mut chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6158 let channel_reserve = chan_stat.channel_reserve_msat;
6159 let feerate = get_feerate!(nodes[0], chan.2);
6161 // 2* and +1 HTLCs on the commit tx fee calculation for the fee spike reserve.
6162 let (payment_preimage_1, payment_hash_1) = get_payment_preimage_hash!(nodes[0]);
6164 let (_, payment_hash_2) = get_payment_preimage_hash!(nodes[0]);
6165 let amt_2 = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 2 + 1) - amt_1;
6166 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6167 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(), None, &[], amt_1, TEST_FINAL_CLTV, &logger).unwrap();
6168 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(), None, &[], amt_2, TEST_FINAL_CLTV, &logger).unwrap();
6170 // Send 2 payments which pass reserve checks but get stuck in the holding cell.
6171 nodes[0].node.send_payment(&route_1, payment_hash_1, &None).unwrap();
6172 chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6173 assert_eq!(chan_stat.holding_cell_outbound_amount_msat, amt_1);
6174 nodes[0].node.send_payment(&route_2, payment_hash_2, &None).unwrap();
6175 chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6176 assert_eq!(chan_stat.holding_cell_outbound_amount_msat, amt_1 + amt_2);
6178 // Flush the pending fee update.
6179 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
6180 let (revoke_and_ack, commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
6181 check_added_monitors!(nodes[1], 1);
6182 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_and_ack);
6183 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed);
6184 check_added_monitors!(nodes[0], 2);
6186 // Upon receipt of the RAA, there will be an attempt to resend the holding cell HTLCs,
6187 // but now that the fee has been raised the second payment will now fail, causing us
6188 // to surface its failure to the user. The first payment should succeed.
6189 chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6190 assert_eq!(chan_stat.holding_cell_outbound_amount_msat, 0);
6191 nodes[0].logger.assert_log("lightning::ln::channel".to_string(), "Freeing holding cell with 2 HTLC updates".to_string(), 1);
6192 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);
6193 nodes[0].logger.assert_log("lightning::ln::channel".to_string(), failure_log.to_string(), 1);
6195 // Check that the second payment failed to be sent out.
6196 let events = nodes[0].node.get_and_clear_pending_events();
6197 assert_eq!(events.len(), 1);
6199 &Event::PaymentFailed { ref payment_hash, ref rejected_by_dest, ref error_code, ref error_data } => {
6200 assert_eq!(payment_hash_2.clone(), *payment_hash);
6201 assert_eq!(*rejected_by_dest, false);
6202 assert_eq!(*error_code, None);
6203 assert_eq!(*error_data, None);
6205 _ => panic!("Unexpected event"),
6208 // Complete the first payment and the RAA from the fee update.
6209 let (payment_event, send_raa_event) = {
6210 let mut msgs = nodes[0].node.get_and_clear_pending_msg_events();
6211 assert_eq!(msgs.len(), 2);
6212 (SendEvent::from_event(msgs.remove(0)), msgs.remove(0))
6214 let raa = match send_raa_event {
6215 MessageSendEvent::SendRevokeAndACK { msg, .. } => msg,
6216 _ => panic!("Unexpected event"),
6218 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &raa);
6219 check_added_monitors!(nodes[1], 1);
6220 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
6221 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
6222 let events = nodes[1].node.get_and_clear_pending_events();
6223 assert_eq!(events.len(), 1);
6225 Event::PendingHTLCsForwardable { .. } => {},
6226 _ => panic!("Unexpected event"),
6228 nodes[1].node.process_pending_htlc_forwards();
6229 let events = nodes[1].node.get_and_clear_pending_events();
6230 assert_eq!(events.len(), 1);
6232 Event::PaymentReceived { .. } => {},
6233 _ => panic!("Unexpected event"),
6235 nodes[1].node.claim_funds(payment_preimage_1, &None, amt_1);
6236 check_added_monitors!(nodes[1], 1);
6237 let update_msgs = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
6238 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_msgs.update_fulfill_htlcs[0]);
6239 commitment_signed_dance!(nodes[0], nodes[1], update_msgs.commitment_signed, false, true);
6240 let events = nodes[0].node.get_and_clear_pending_events();
6241 assert_eq!(events.len(), 1);
6243 Event::PaymentSent { ref payment_preimage } => {
6244 assert_eq!(*payment_preimage, payment_preimage_1);
6246 _ => panic!("Unexpected event"),
6250 // Test that if we fail to forward an HTLC that is being freed from the holding cell that the
6251 // HTLC is failed backwards. We trigger this failure to forward the freed HTLC by increasing
6252 // our fee while the HTLC is in the holding cell such that the HTLC is no longer affordable
6255 fn test_fail_holding_cell_htlc_upon_free_multihop() {
6256 let chanmon_cfgs = create_chanmon_cfgs(3);
6257 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
6258 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
6259 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
6260 let chan_0_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6261 let chan_1_2 = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6262 let logger = test_utils::TestLogger::new();
6264 // First nodes[1] generates an update_fee, setting the channel's
6265 // pending_update_fee.
6266 nodes[1].node.update_fee(chan_1_2.2, get_feerate!(nodes[1], chan_1_2.2) + 20).unwrap();
6267 check_added_monitors!(nodes[1], 1);
6269 let events = nodes[1].node.get_and_clear_pending_msg_events();
6270 assert_eq!(events.len(), 1);
6271 let (update_msg, commitment_signed) = match events[0] {
6272 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
6273 (update_fee.as_ref(), commitment_signed)
6275 _ => panic!("Unexpected event"),
6278 nodes[2].node.handle_update_fee(&nodes[1].node.get_our_node_id(), update_msg.unwrap());
6280 let mut chan_stat = get_channel_value_stat!(nodes[0], chan_0_1.2);
6281 let channel_reserve = chan_stat.channel_reserve_msat;
6282 let feerate = get_feerate!(nodes[0], chan_0_1.2);
6284 // Send a payment which passes reserve checks but gets stuck in the holding cell.
6286 let total_routing_fee_msat = (nodes.len() - 2) as u64 * feemsat;
6287 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6288 let max_can_send = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 1 + 1) - total_routing_fee_msat;
6289 let payment_event = {
6290 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6291 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(), None, &[], max_can_send, TEST_FINAL_CLTV, &logger).unwrap();
6292 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6293 check_added_monitors!(nodes[0], 1);
6295 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
6296 assert_eq!(events.len(), 1);
6298 SendEvent::from_event(events.remove(0))
6300 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
6301 check_added_monitors!(nodes[1], 0);
6302 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
6303 expect_pending_htlcs_forwardable!(nodes[1]);
6305 chan_stat = get_channel_value_stat!(nodes[1], chan_1_2.2);
6306 assert_eq!(chan_stat.holding_cell_outbound_amount_msat, max_can_send);
6308 // Flush the pending fee update.
6309 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), commitment_signed);
6310 let (raa, commitment_signed) = get_revoke_commit_msgs!(nodes[2], nodes[1].node.get_our_node_id());
6311 check_added_monitors!(nodes[2], 1);
6312 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &raa);
6313 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &commitment_signed);
6314 check_added_monitors!(nodes[1], 2);
6316 // A final RAA message is generated to finalize the fee update.
6317 let events = nodes[1].node.get_and_clear_pending_msg_events();
6318 assert_eq!(events.len(), 1);
6320 let raa_msg = match &events[0] {
6321 &MessageSendEvent::SendRevokeAndACK { ref msg, .. } => {
6324 _ => panic!("Unexpected event"),
6327 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &raa_msg);
6328 check_added_monitors!(nodes[2], 1);
6329 assert!(nodes[2].node.get_and_clear_pending_msg_events().is_empty());
6331 // nodes[1]'s ChannelManager will now signal that we have HTLC forwards to process.
6332 let process_htlc_forwards_event = nodes[1].node.get_and_clear_pending_events();
6333 assert_eq!(process_htlc_forwards_event.len(), 1);
6334 match &process_htlc_forwards_event[0] {
6335 &Event::PendingHTLCsForwardable { .. } => {},
6336 _ => panic!("Unexpected event"),
6339 // In response, we call ChannelManager's process_pending_htlc_forwards
6340 nodes[1].node.process_pending_htlc_forwards();
6341 check_added_monitors!(nodes[1], 1);
6343 // This causes the HTLC to be failed backwards.
6344 let fail_event = nodes[1].node.get_and_clear_pending_msg_events();
6345 assert_eq!(fail_event.len(), 1);
6346 let (fail_msg, commitment_signed) = match &fail_event[0] {
6347 &MessageSendEvent::UpdateHTLCs { ref updates, .. } => {
6348 assert_eq!(updates.update_add_htlcs.len(), 0);
6349 assert_eq!(updates.update_fulfill_htlcs.len(), 0);
6350 assert_eq!(updates.update_fail_malformed_htlcs.len(), 0);
6351 assert_eq!(updates.update_fail_htlcs.len(), 1);
6352 (updates.update_fail_htlcs[0].clone(), updates.commitment_signed.clone())
6354 _ => panic!("Unexpected event"),
6357 // Pass the failure messages back to nodes[0].
6358 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &fail_msg);
6359 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed);
6361 // Complete the HTLC failure+removal process.
6362 let (raa, commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6363 check_added_monitors!(nodes[0], 1);
6364 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &raa);
6365 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &commitment_signed);
6366 check_added_monitors!(nodes[1], 2);
6367 let final_raa_event = nodes[1].node.get_and_clear_pending_msg_events();
6368 assert_eq!(final_raa_event.len(), 1);
6369 let raa = match &final_raa_event[0] {
6370 &MessageSendEvent::SendRevokeAndACK { ref msg, .. } => msg.clone(),
6371 _ => panic!("Unexpected event"),
6373 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &raa);
6374 let fail_msg_event = nodes[0].node.get_and_clear_pending_msg_events();
6375 assert_eq!(fail_msg_event.len(), 1);
6376 match &fail_msg_event[0] {
6377 &MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
6378 _ => panic!("Unexpected event"),
6380 let failure_event = nodes[0].node.get_and_clear_pending_events();
6381 assert_eq!(failure_event.len(), 1);
6382 match &failure_event[0] {
6383 &Event::PaymentFailed { rejected_by_dest, .. } => {
6384 assert!(!rejected_by_dest);
6386 _ => panic!("Unexpected event"),
6388 check_added_monitors!(nodes[0], 1);
6391 // BOLT 2 Requirements for the Sender when constructing and sending an update_add_htlc message.
6392 // 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.
6393 //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.
6396 fn test_update_add_htlc_bolt2_sender_value_below_minimum_msat() {
6397 //BOLT2 Requirement: MUST NOT offer amount_msat below the receiving node's htlc_minimum_msat (same validation check catches both of these)
6398 let chanmon_cfgs = create_chanmon_cfgs(2);
6399 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6400 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6401 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6402 let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6404 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6405 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6406 let logger = test_utils::TestLogger::new();
6407 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(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
6408 route.paths[0][0].fee_msat = 100;
6410 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
6411 assert!(regex::Regex::new(r"Cannot send less than their minimum HTLC value \(\d+\)").unwrap().is_match(err)));
6412 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
6413 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot send less than their minimum HTLC value".to_string(), 1);
6417 fn test_update_add_htlc_bolt2_sender_zero_value_msat() {
6418 //BOLT2 Requirement: MUST offer amount_msat greater than 0.
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 (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6426 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6427 let logger = test_utils::TestLogger::new();
6428 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(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
6429 route.paths[0][0].fee_msat = 0;
6430 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
6431 assert_eq!(err, "Cannot send 0-msat HTLC"));
6433 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
6434 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot send 0-msat HTLC".to_string(), 1);
6438 fn test_update_add_htlc_bolt2_receiver_zero_value_msat() {
6439 //BOLT2 Requirement: MUST offer amount_msat greater than 0.
6440 let chanmon_cfgs = create_chanmon_cfgs(2);
6441 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6442 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6443 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6444 let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6446 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6447 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6448 let logger = test_utils::TestLogger::new();
6449 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(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
6450 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6451 check_added_monitors!(nodes[0], 1);
6452 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6453 updates.update_add_htlcs[0].amount_msat = 0;
6455 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6456 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Remote side tried to send a 0-msat HTLC".to_string(), 1);
6457 check_closed_broadcast!(nodes[1], true).unwrap();
6458 check_added_monitors!(nodes[1], 1);
6462 fn test_update_add_htlc_bolt2_sender_cltv_expiry_too_high() {
6463 //BOLT 2 Requirement: MUST set cltv_expiry less than 500000000.
6464 //It is enforced when constructing a route.
6465 let chanmon_cfgs = create_chanmon_cfgs(2);
6466 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6467 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6468 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6469 let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 0, InitFeatures::known(), InitFeatures::known());
6470 let logger = test_utils::TestLogger::new();
6472 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6474 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6475 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(), None, &[], 100000000, 500000001, &logger).unwrap();
6476 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::RouteError { ref err },
6477 assert_eq!(err, &"Channel CLTV overflowed?"));
6481 fn test_update_add_htlc_bolt2_sender_exceed_max_htlc_num_and_htlc_id_increment() {
6482 //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.
6483 //BOLT 2 Requirement: for the first HTLC it offers MUST set id to 0.
6484 //BOLT 2 Requirement: MUST increase the value of id by 1 for each successive offer.
6485 let chanmon_cfgs = create_chanmon_cfgs(2);
6486 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6487 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6488 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6489 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 0, InitFeatures::known(), InitFeatures::known());
6490 let max_accepted_htlcs = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().counterparty_max_accepted_htlcs as u64;
6492 let logger = test_utils::TestLogger::new();
6493 for i in 0..max_accepted_htlcs {
6494 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6495 let payment_event = {
6496 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6497 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(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
6498 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6499 check_added_monitors!(nodes[0], 1);
6501 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
6502 assert_eq!(events.len(), 1);
6503 if let MessageSendEvent::UpdateHTLCs { node_id: _, updates: msgs::CommitmentUpdate{ update_add_htlcs: ref htlcs, .. }, } = events[0] {
6504 assert_eq!(htlcs[0].htlc_id, i);
6508 SendEvent::from_event(events.remove(0))
6510 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
6511 check_added_monitors!(nodes[1], 0);
6512 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
6514 expect_pending_htlcs_forwardable!(nodes[1]);
6515 expect_payment_received!(nodes[1], our_payment_hash, 100000);
6517 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6518 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6519 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(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
6520 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
6521 assert!(regex::Regex::new(r"Cannot push more than their max accepted HTLCs \(\d+\)").unwrap().is_match(err)));
6523 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
6524 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot push more than their max accepted HTLCs".to_string(), 1);
6528 fn test_update_add_htlc_bolt2_sender_exceed_max_htlc_value_in_flight() {
6529 //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.
6530 let chanmon_cfgs = create_chanmon_cfgs(2);
6531 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6532 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6533 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6534 let channel_value = 100000;
6535 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, channel_value, 0, InitFeatures::known(), InitFeatures::known());
6536 let max_in_flight = get_channel_value_stat!(nodes[0], chan.2).counterparty_max_htlc_value_in_flight_msat;
6538 send_payment(&nodes[0], &vec!(&nodes[1])[..], max_in_flight, max_in_flight);
6540 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6541 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6542 let logger = test_utils::TestLogger::new();
6543 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(), None, &[], max_in_flight+1, TEST_FINAL_CLTV, &logger).unwrap();
6544 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
6545 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)));
6547 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
6548 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);
6550 send_payment(&nodes[0], &[&nodes[1]], max_in_flight, max_in_flight);
6553 // BOLT 2 Requirements for the Receiver when handling an update_add_htlc message.
6555 fn test_update_add_htlc_bolt2_receiver_check_amount_received_more_than_min() {
6556 //BOLT2 Requirement: receiving an amount_msat equal to 0, OR less than its own htlc_minimum_msat -> SHOULD fail the channel.
6557 let chanmon_cfgs = create_chanmon_cfgs(2);
6558 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6559 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6560 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6561 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6562 let htlc_minimum_msat: u64;
6564 let chan_lock = nodes[0].node.channel_state.lock().unwrap();
6565 let channel = chan_lock.by_id.get(&chan.2).unwrap();
6566 htlc_minimum_msat = channel.get_holder_htlc_minimum_msat();
6569 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6570 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6571 let logger = test_utils::TestLogger::new();
6572 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(), None, &[], htlc_minimum_msat, TEST_FINAL_CLTV, &logger).unwrap();
6573 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6574 check_added_monitors!(nodes[0], 1);
6575 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6576 updates.update_add_htlcs[0].amount_msat = htlc_minimum_msat-1;
6577 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6578 assert!(nodes[1].node.list_channels().is_empty());
6579 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6580 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()));
6581 check_added_monitors!(nodes[1], 1);
6585 fn test_update_add_htlc_bolt2_receiver_sender_can_afford_amount_sent() {
6586 //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
6587 let chanmon_cfgs = create_chanmon_cfgs(2);
6588 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6589 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6590 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6591 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6592 let logger = test_utils::TestLogger::new();
6594 let chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6595 let channel_reserve = chan_stat.channel_reserve_msat;
6596 let feerate = get_feerate!(nodes[0], chan.2);
6597 // The 2* and +1 are for the fee spike reserve.
6598 let commit_tx_fee_outbound = 2 * commit_tx_fee_msat(feerate, 1 + 1);
6600 let max_can_send = 5000000 - channel_reserve - commit_tx_fee_outbound;
6601 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6602 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6603 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(), None, &[], max_can_send, TEST_FINAL_CLTV, &logger).unwrap();
6604 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6605 check_added_monitors!(nodes[0], 1);
6606 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6608 // Even though channel-initiator senders are required to respect the fee_spike_reserve,
6609 // at this time channel-initiatee receivers are not required to enforce that senders
6610 // respect the fee_spike_reserve.
6611 updates.update_add_htlcs[0].amount_msat = max_can_send + commit_tx_fee_outbound + 1;
6612 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6614 assert!(nodes[1].node.list_channels().is_empty());
6615 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6616 assert_eq!(err_msg.data, "Remote HTLC add would put them under remote reserve value");
6617 check_added_monitors!(nodes[1], 1);
6621 fn test_update_add_htlc_bolt2_receiver_check_max_htlc_limit() {
6622 //BOLT 2 Requirement: if a sending node adds more than its max_accepted_htlcs HTLCs to its local commitment transaction: SHOULD fail the channel
6623 //BOLT 2 Requirement: MUST allow multiple HTLCs with the same payment_hash.
6624 let chanmon_cfgs = create_chanmon_cfgs(2);
6625 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6626 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6627 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6628 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6629 let logger = test_utils::TestLogger::new();
6631 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6632 let session_priv = SecretKey::from_slice(&[42; 32]).unwrap();
6634 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6635 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(), None, &[], 3999999, TEST_FINAL_CLTV, &logger).unwrap();
6637 let cur_height = nodes[0].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
6638 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::signing_only(), &route.paths[0], &session_priv).unwrap();
6639 let (onion_payloads, _htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route.paths[0], 3999999, &None, cur_height).unwrap();
6640 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &our_payment_hash);
6642 let mut msg = msgs::UpdateAddHTLC {
6646 payment_hash: our_payment_hash,
6647 cltv_expiry: htlc_cltv,
6648 onion_routing_packet: onion_packet.clone(),
6651 for i in 0..super::channel::OUR_MAX_HTLCS {
6652 msg.htlc_id = i as u64;
6653 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg);
6655 msg.htlc_id = (super::channel::OUR_MAX_HTLCS) as u64;
6656 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg);
6658 assert!(nodes[1].node.list_channels().is_empty());
6659 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6660 assert!(regex::Regex::new(r"Remote tried to push more than our max accepted HTLCs \(\d+\)").unwrap().is_match(err_msg.data.as_str()));
6661 check_added_monitors!(nodes[1], 1);
6665 fn test_update_add_htlc_bolt2_receiver_check_max_in_flight_msat() {
6666 //OR adds more than its max_htlc_value_in_flight_msat worth of offered HTLCs to its local commitment transaction: SHOULD fail the channel
6667 let chanmon_cfgs = create_chanmon_cfgs(2);
6668 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6669 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6670 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6671 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
6672 let logger = test_utils::TestLogger::new();
6674 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6675 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6676 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(), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6677 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6678 check_added_monitors!(nodes[0], 1);
6679 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6680 updates.update_add_htlcs[0].amount_msat = get_channel_value_stat!(nodes[1], chan.2).counterparty_max_htlc_value_in_flight_msat + 1;
6681 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6683 assert!(nodes[1].node.list_channels().is_empty());
6684 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6685 assert!(regex::Regex::new("Remote HTLC add would put them over our max HTLC value").unwrap().is_match(err_msg.data.as_str()));
6686 check_added_monitors!(nodes[1], 1);
6690 fn test_update_add_htlc_bolt2_receiver_check_cltv_expiry() {
6691 //BOLT2 Requirement: if sending node sets cltv_expiry to greater or equal to 500000000: SHOULD fail the channel.
6692 let chanmon_cfgs = create_chanmon_cfgs(2);
6693 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6694 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6695 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6696 let logger = test_utils::TestLogger::new();
6698 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6699 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6700 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6701 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(), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6702 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6703 check_added_monitors!(nodes[0], 1);
6704 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6705 updates.update_add_htlcs[0].cltv_expiry = 500000000;
6706 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6708 assert!(nodes[1].node.list_channels().is_empty());
6709 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6710 assert_eq!(err_msg.data,"Remote provided CLTV expiry in seconds instead of block height");
6711 check_added_monitors!(nodes[1], 1);
6715 fn test_update_add_htlc_bolt2_receiver_check_repeated_id_ignore() {
6716 //BOLT 2 requirement: if the sender did not previously acknowledge the commitment of that HTLC: MUST ignore a repeated id value after a reconnection.
6717 // We test this by first testing that that repeated HTLCs pass commitment signature checks
6718 // after disconnect and that non-sequential htlc_ids result in a channel failure.
6719 let chanmon_cfgs = create_chanmon_cfgs(2);
6720 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6721 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6722 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6723 let logger = test_utils::TestLogger::new();
6725 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6726 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6727 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6728 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(), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6729 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6730 check_added_monitors!(nodes[0], 1);
6731 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6732 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6734 //Disconnect and Reconnect
6735 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
6736 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
6737 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
6738 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
6739 assert_eq!(reestablish_1.len(), 1);
6740 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
6741 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
6742 assert_eq!(reestablish_2.len(), 1);
6743 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
6744 handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
6745 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
6746 handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
6749 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6750 assert_eq!(updates.commitment_signed.htlc_signatures.len(), 1);
6751 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &updates.commitment_signed);
6752 check_added_monitors!(nodes[1], 1);
6753 let _bs_responses = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
6755 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6757 assert!(nodes[1].node.list_channels().is_empty());
6758 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6759 assert!(regex::Regex::new(r"Remote skipped HTLC ID \(skipped ID: \d+\)").unwrap().is_match(err_msg.data.as_str()));
6760 check_added_monitors!(nodes[1], 1);
6764 fn test_update_fulfill_htlc_bolt2_update_fulfill_htlc_before_commitment() {
6765 //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.
6767 let chanmon_cfgs = create_chanmon_cfgs(2);
6768 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6769 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6770 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6771 let logger = test_utils::TestLogger::new();
6772 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6773 let (our_payment_preimage, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6774 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6775 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(), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6776 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6778 check_added_monitors!(nodes[0], 1);
6779 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6780 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6782 let update_msg = msgs::UpdateFulfillHTLC{
6785 payment_preimage: our_payment_preimage,
6788 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_msg);
6790 assert!(nodes[0].node.list_channels().is_empty());
6791 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6792 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()));
6793 check_added_monitors!(nodes[0], 1);
6797 fn test_update_fulfill_htlc_bolt2_update_fail_htlc_before_commitment() {
6798 //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.
6800 let chanmon_cfgs = create_chanmon_cfgs(2);
6801 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6802 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6803 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6804 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6805 let logger = test_utils::TestLogger::new();
6807 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6808 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6809 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(), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6810 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6811 check_added_monitors!(nodes[0], 1);
6812 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6813 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6815 let update_msg = msgs::UpdateFailHTLC{
6818 reason: msgs::OnionErrorPacket { data: Vec::new()},
6821 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_msg);
6823 assert!(nodes[0].node.list_channels().is_empty());
6824 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6825 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()));
6826 check_added_monitors!(nodes[0], 1);
6830 fn test_update_fulfill_htlc_bolt2_update_fail_malformed_htlc_before_commitment() {
6831 //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.
6833 let chanmon_cfgs = create_chanmon_cfgs(2);
6834 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6835 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6836 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6837 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6838 let logger = test_utils::TestLogger::new();
6840 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
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[1].node.get_our_node_id(), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6843 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6844 check_added_monitors!(nodes[0], 1);
6845 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6846 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6848 let update_msg = msgs::UpdateFailMalformedHTLC{
6851 sha256_of_onion: [1; 32],
6852 failure_code: 0x8000,
6855 nodes[0].node.handle_update_fail_malformed_htlc(&nodes[1].node.get_our_node_id(), &update_msg);
6857 assert!(nodes[0].node.list_channels().is_empty());
6858 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6859 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()));
6860 check_added_monitors!(nodes[0], 1);
6864 fn test_update_fulfill_htlc_bolt2_incorrect_htlc_id() {
6865 //BOLT 2 Requirement: A receiving node: if the id does not correspond to an HTLC in its current commitment transaction MUST fail the channel.
6867 let chanmon_cfgs = create_chanmon_cfgs(2);
6868 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6869 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6870 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6871 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6873 let our_payment_preimage = route_payment(&nodes[0], &[&nodes[1]], 100000).0;
6875 nodes[1].node.claim_funds(our_payment_preimage, &None, 100_000);
6876 check_added_monitors!(nodes[1], 1);
6878 let events = nodes[1].node.get_and_clear_pending_msg_events();
6879 assert_eq!(events.len(), 1);
6880 let mut update_fulfill_msg: msgs::UpdateFulfillHTLC = {
6882 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, .. } } => {
6883 assert!(update_add_htlcs.is_empty());
6884 assert_eq!(update_fulfill_htlcs.len(), 1);
6885 assert!(update_fail_htlcs.is_empty());
6886 assert!(update_fail_malformed_htlcs.is_empty());
6887 assert!(update_fee.is_none());
6888 update_fulfill_htlcs[0].clone()
6890 _ => panic!("Unexpected event"),
6894 update_fulfill_msg.htlc_id = 1;
6896 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_msg);
6898 assert!(nodes[0].node.list_channels().is_empty());
6899 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6900 assert_eq!(err_msg.data, "Remote tried to fulfill/fail an HTLC we couldn't find");
6901 check_added_monitors!(nodes[0], 1);
6905 fn test_update_fulfill_htlc_bolt2_wrong_preimage() {
6906 //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.
6908 let chanmon_cfgs = create_chanmon_cfgs(2);
6909 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6910 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6911 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6912 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6914 let our_payment_preimage = route_payment(&nodes[0], &[&nodes[1]], 100000).0;
6916 nodes[1].node.claim_funds(our_payment_preimage, &None, 100_000);
6917 check_added_monitors!(nodes[1], 1);
6919 let events = nodes[1].node.get_and_clear_pending_msg_events();
6920 assert_eq!(events.len(), 1);
6921 let mut update_fulfill_msg: msgs::UpdateFulfillHTLC = {
6923 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, .. } } => {
6924 assert!(update_add_htlcs.is_empty());
6925 assert_eq!(update_fulfill_htlcs.len(), 1);
6926 assert!(update_fail_htlcs.is_empty());
6927 assert!(update_fail_malformed_htlcs.is_empty());
6928 assert!(update_fee.is_none());
6929 update_fulfill_htlcs[0].clone()
6931 _ => panic!("Unexpected event"),
6935 update_fulfill_msg.payment_preimage = PaymentPreimage([1; 32]);
6937 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_msg);
6939 assert!(nodes[0].node.list_channels().is_empty());
6940 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6941 assert!(regex::Regex::new(r"Remote tried to fulfill HTLC \(\d+\) with an incorrect preimage").unwrap().is_match(err_msg.data.as_str()));
6942 check_added_monitors!(nodes[0], 1);
6946 fn test_update_fulfill_htlc_bolt2_missing_badonion_bit_for_malformed_htlc_message() {
6947 //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.
6949 let chanmon_cfgs = create_chanmon_cfgs(2);
6950 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6951 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6952 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6953 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
6954 let logger = test_utils::TestLogger::new();
6956 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6957 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6958 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(), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6959 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6960 check_added_monitors!(nodes[0], 1);
6962 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6963 updates.update_add_htlcs[0].onion_routing_packet.version = 1; //Produce a malformed HTLC message
6965 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6966 check_added_monitors!(nodes[1], 0);
6967 commitment_signed_dance!(nodes[1], nodes[0], updates.commitment_signed, false, true);
6969 let events = nodes[1].node.get_and_clear_pending_msg_events();
6971 let mut update_msg: msgs::UpdateFailMalformedHTLC = {
6973 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, .. } } => {
6974 assert!(update_add_htlcs.is_empty());
6975 assert!(update_fulfill_htlcs.is_empty());
6976 assert!(update_fail_htlcs.is_empty());
6977 assert_eq!(update_fail_malformed_htlcs.len(), 1);
6978 assert!(update_fee.is_none());
6979 update_fail_malformed_htlcs[0].clone()
6981 _ => panic!("Unexpected event"),
6984 update_msg.failure_code &= !0x8000;
6985 nodes[0].node.handle_update_fail_malformed_htlc(&nodes[1].node.get_our_node_id(), &update_msg);
6987 assert!(nodes[0].node.list_channels().is_empty());
6988 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6989 assert_eq!(err_msg.data, "Got update_fail_malformed_htlc with BADONION not set");
6990 check_added_monitors!(nodes[0], 1);
6994 fn test_update_fulfill_htlc_bolt2_after_malformed_htlc_message_must_forward_update_fail_htlc() {
6995 //BOLT 2 Requirement: a receiving node which has an outgoing HTLC canceled by update_fail_malformed_htlc:
6996 // * 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.
6998 let chanmon_cfgs = create_chanmon_cfgs(3);
6999 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
7000 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
7001 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
7002 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
7003 create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
7004 let logger = test_utils::TestLogger::new();
7006 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
7009 let mut payment_event = {
7010 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
7011 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(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
7012 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
7013 check_added_monitors!(nodes[0], 1);
7014 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
7015 assert_eq!(events.len(), 1);
7016 SendEvent::from_event(events.remove(0))
7018 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
7019 check_added_monitors!(nodes[1], 0);
7020 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
7021 expect_pending_htlcs_forwardable!(nodes[1]);
7022 let mut events_2 = nodes[1].node.get_and_clear_pending_msg_events();
7023 assert_eq!(events_2.len(), 1);
7024 check_added_monitors!(nodes[1], 1);
7025 payment_event = SendEvent::from_event(events_2.remove(0));
7026 assert_eq!(payment_event.msgs.len(), 1);
7029 payment_event.msgs[0].onion_routing_packet.version = 1; //Produce a malformed HTLC message
7030 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]);
7031 check_added_monitors!(nodes[2], 0);
7032 commitment_signed_dance!(nodes[2], nodes[1], payment_event.commitment_msg, false, true);
7034 let events_3 = nodes[2].node.get_and_clear_pending_msg_events();
7035 assert_eq!(events_3.len(), 1);
7036 let update_msg : (msgs::UpdateFailMalformedHTLC, msgs::CommitmentSigned) = {
7038 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 } } => {
7039 assert!(update_add_htlcs.is_empty());
7040 assert!(update_fulfill_htlcs.is_empty());
7041 assert!(update_fail_htlcs.is_empty());
7042 assert_eq!(update_fail_malformed_htlcs.len(), 1);
7043 assert!(update_fee.is_none());
7044 (update_fail_malformed_htlcs[0].clone(), commitment_signed.clone())
7046 _ => panic!("Unexpected event"),
7050 nodes[1].node.handle_update_fail_malformed_htlc(&nodes[2].node.get_our_node_id(), &update_msg.0);
7052 check_added_monitors!(nodes[1], 0);
7053 commitment_signed_dance!(nodes[1], nodes[2], update_msg.1, false, true);
7054 expect_pending_htlcs_forwardable!(nodes[1]);
7055 let events_4 = nodes[1].node.get_and_clear_pending_msg_events();
7056 assert_eq!(events_4.len(), 1);
7058 //Confirm that handlinge the update_malformed_htlc message produces an update_fail_htlc message to be forwarded back along the route
7060 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, .. } } => {
7061 assert!(update_add_htlcs.is_empty());
7062 assert!(update_fulfill_htlcs.is_empty());
7063 assert_eq!(update_fail_htlcs.len(), 1);
7064 assert!(update_fail_malformed_htlcs.is_empty());
7065 assert!(update_fee.is_none());
7067 _ => panic!("Unexpected event"),
7070 check_added_monitors!(nodes[1], 1);
7073 fn do_test_failure_delay_dust_htlc_local_commitment(announce_latest: bool) {
7074 // Dust-HTLC failure updates must be delayed until failure-trigger tx (in this case local commitment) reach ANTI_REORG_DELAY
7075 // 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
7076 // HTLC could have been removed from lastest local commitment tx but still valid until we get remote RAA
7078 let chanmon_cfgs = create_chanmon_cfgs(2);
7079 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7080 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7081 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7082 let chan =create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
7084 let bs_dust_limit = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().holder_dust_limit_satoshis;
7086 // We route 2 dust-HTLCs between A and B
7087 let (_, payment_hash_1) = route_payment(&nodes[0], &[&nodes[1]], bs_dust_limit*1000);
7088 let (_, payment_hash_2) = route_payment(&nodes[0], &[&nodes[1]], bs_dust_limit*1000);
7089 route_payment(&nodes[0], &[&nodes[1]], 1000000);
7091 // Cache one local commitment tx as previous
7092 let as_prev_commitment_tx = get_local_commitment_txn!(nodes[0], chan.2);
7094 // Fail one HTLC to prune it in the will-be-latest-local commitment tx
7095 assert!(nodes[1].node.fail_htlc_backwards(&payment_hash_2, &None));
7096 check_added_monitors!(nodes[1], 0);
7097 expect_pending_htlcs_forwardable!(nodes[1]);
7098 check_added_monitors!(nodes[1], 1);
7100 let remove = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
7101 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &remove.update_fail_htlcs[0]);
7102 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &remove.commitment_signed);
7103 check_added_monitors!(nodes[0], 1);
7105 // Cache one local commitment tx as lastest
7106 let as_last_commitment_tx = get_local_commitment_txn!(nodes[0], chan.2);
7108 let events = nodes[0].node.get_and_clear_pending_msg_events();
7110 MessageSendEvent::SendRevokeAndACK { node_id, .. } => {
7111 assert_eq!(node_id, nodes[1].node.get_our_node_id());
7113 _ => panic!("Unexpected event"),
7116 MessageSendEvent::UpdateHTLCs { node_id, .. } => {
7117 assert_eq!(node_id, nodes[1].node.get_our_node_id());
7119 _ => panic!("Unexpected event"),
7122 assert_ne!(as_prev_commitment_tx, as_last_commitment_tx);
7123 // Fail the 2 dust-HTLCs, move their failure in maturation buffer (htlc_updated_waiting_threshold_conf)
7124 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7126 if announce_latest {
7127 connect_block(&nodes[0], &Block { header, txdata: vec![as_last_commitment_tx[0].clone()]}, 1);
7129 connect_block(&nodes[0], &Block { header, txdata: vec![as_prev_commitment_tx[0].clone()]}, 1);
7132 check_closed_broadcast!(nodes[0], false);
7133 check_added_monitors!(nodes[0], 1);
7135 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7136 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1, 1, true, header.block_hash());
7137 let events = nodes[0].node.get_and_clear_pending_events();
7138 // Only 2 PaymentFailed events should show up, over-dust HTLC has to be failed by timeout tx
7139 assert_eq!(events.len(), 2);
7140 let mut first_failed = false;
7141 for event in events {
7143 Event::PaymentFailed { payment_hash, .. } => {
7144 if payment_hash == payment_hash_1 {
7145 assert!(!first_failed);
7146 first_failed = true;
7148 assert_eq!(payment_hash, payment_hash_2);
7151 _ => panic!("Unexpected event"),
7157 fn test_failure_delay_dust_htlc_local_commitment() {
7158 do_test_failure_delay_dust_htlc_local_commitment(true);
7159 do_test_failure_delay_dust_htlc_local_commitment(false);
7163 fn test_no_failure_dust_htlc_local_commitment() {
7164 // Transaction filters for failing back dust htlc based on local commitment txn infos has been
7165 // prone to error, we test here that a dummy transaction don't fail them.
7167 let chanmon_cfgs = create_chanmon_cfgs(2);
7168 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7169 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7170 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7171 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
7174 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
7176 let as_dust_limit = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().holder_dust_limit_satoshis;
7177 let bs_dust_limit = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().holder_dust_limit_satoshis;
7179 // We route 2 dust-HTLCs between A and B
7180 let (preimage_1, _) = route_payment(&nodes[0], &[&nodes[1]], bs_dust_limit*1000);
7181 let (preimage_2, _) = route_payment(&nodes[1], &[&nodes[0]], as_dust_limit*1000);
7183 // Build a dummy invalid transaction trying to spend a commitment tx
7185 previous_output: BitcoinOutPoint { txid: chan.3.txid(), vout: 0 },
7186 script_sig: Script::new(),
7188 witness: Vec::new(),
7192 script_pubkey: Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(),
7196 let dummy_tx = Transaction {
7203 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7204 nodes[0].chain_monitor.chain_monitor.block_connected(&header, &[(0, &dummy_tx)], 1);
7205 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7206 assert_eq!(nodes[0].node.get_and_clear_pending_msg_events().len(), 0);
7207 // We broadcast a few more block to check everything is all right
7208 connect_blocks(&nodes[0], 20, 1, true, header.block_hash());
7209 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7210 assert_eq!(nodes[0].node.get_and_clear_pending_msg_events().len(), 0);
7212 claim_payment(&nodes[0], &vec!(&nodes[1])[..], preimage_1, bs_dust_limit*1000);
7213 claim_payment(&nodes[1], &vec!(&nodes[0])[..], preimage_2, as_dust_limit*1000);
7216 fn do_test_sweep_outbound_htlc_failure_update(revoked: bool, local: bool) {
7217 // Outbound HTLC-failure updates must be cancelled if we get a reorg before we reach ANTI_REORG_DELAY.
7218 // Broadcast of revoked remote commitment tx, trigger failure-update of dust/non-dust HTLCs
7219 // Broadcast of remote commitment tx, trigger failure-update of dust-HTLCs
7220 // Broadcast of timeout tx on remote commitment tx, trigger failure-udate of non-dust HTLCs
7221 // Broadcast of local commitment tx, trigger failure-update of dust-HTLCs
7222 // Broadcast of HTLC-timeout tx on local commitment tx, trigger failure-update of non-dust HTLCs
7224 let chanmon_cfgs = create_chanmon_cfgs(3);
7225 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
7226 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
7227 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
7228 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
7230 let bs_dust_limit = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().holder_dust_limit_satoshis;
7232 let (_payment_preimage_1, dust_hash) = route_payment(&nodes[0], &[&nodes[1]], bs_dust_limit*1000);
7233 let (_payment_preimage_2, non_dust_hash) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
7235 let as_commitment_tx = get_local_commitment_txn!(nodes[0], chan.2);
7236 let bs_commitment_tx = get_local_commitment_txn!(nodes[1], chan.2);
7238 // We revoked bs_commitment_tx
7240 let (payment_preimage_3, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
7241 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_3, 1_000_000);
7244 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7245 let mut timeout_tx = Vec::new();
7247 // We fail dust-HTLC 1 by broadcast of local commitment tx
7248 connect_block(&nodes[0], &Block { header, txdata: vec![as_commitment_tx[0].clone()]}, 1);
7249 check_closed_broadcast!(nodes[0], false);
7250 check_added_monitors!(nodes[0], 1);
7251 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7252 timeout_tx.push(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap()[0].clone());
7253 let parent_hash = connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1, 2, true, header.block_hash());
7254 expect_payment_failed!(nodes[0], dust_hash, true);
7255 assert_eq!(timeout_tx[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
7256 // We fail non-dust-HTLC 2 by broadcast of local HTLC-timeout tx on local commitment tx
7257 let header_2 = BlockHeader { version: 0x20000000, prev_blockhash: parent_hash, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7258 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7259 connect_block(&nodes[0], &Block { header: header_2, txdata: vec![timeout_tx[0].clone()]}, 7);
7260 let header_3 = BlockHeader { version: 0x20000000, prev_blockhash: header_2.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7261 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1, 8, true, header_3.block_hash());
7262 expect_payment_failed!(nodes[0], non_dust_hash, true);
7264 // We fail dust-HTLC 1 by broadcast of remote commitment tx. If revoked, fail also non-dust HTLC
7265 connect_block(&nodes[0], &Block { header, txdata: vec![bs_commitment_tx[0].clone()]}, 1);
7266 check_closed_broadcast!(nodes[0], false);
7267 check_added_monitors!(nodes[0], 1);
7268 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7269 timeout_tx.push(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap()[0].clone());
7270 let parent_hash = connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1, 2, true, header.block_hash());
7271 let header_2 = BlockHeader { version: 0x20000000, prev_blockhash: parent_hash, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7273 expect_payment_failed!(nodes[0], dust_hash, true);
7274 assert_eq!(timeout_tx[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
7275 // We fail non-dust-HTLC 2 by broadcast of local timeout tx on remote commitment tx
7276 connect_block(&nodes[0], &Block { header: header_2, txdata: vec![timeout_tx[0].clone()]}, 7);
7277 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7278 let header_3 = BlockHeader { version: 0x20000000, prev_blockhash: header_2.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7279 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1, 8, true, header_3.block_hash());
7280 expect_payment_failed!(nodes[0], non_dust_hash, true);
7282 // If revoked, both dust & non-dust HTLCs should have been failed after ANTI_REORG_DELAY confs of revoked
7284 let events = nodes[0].node.get_and_clear_pending_events();
7285 assert_eq!(events.len(), 2);
7288 Event::PaymentFailed { payment_hash, .. } => {
7289 if payment_hash == dust_hash { first = true; }
7290 else { first = false; }
7292 _ => panic!("Unexpected event"),
7295 Event::PaymentFailed { payment_hash, .. } => {
7296 if first { assert_eq!(payment_hash, non_dust_hash); }
7297 else { assert_eq!(payment_hash, dust_hash); }
7299 _ => panic!("Unexpected event"),
7306 fn test_sweep_outbound_htlc_failure_update() {
7307 do_test_sweep_outbound_htlc_failure_update(false, true);
7308 do_test_sweep_outbound_htlc_failure_update(false, false);
7309 do_test_sweep_outbound_htlc_failure_update(true, false);
7313 fn test_upfront_shutdown_script() {
7314 // BOLT 2 : Option upfront shutdown script, if peer commit its closing_script at channel opening
7315 // enforce it at shutdown message
7317 let mut config = UserConfig::default();
7318 config.channel_options.announced_channel = true;
7319 config.peer_channel_config_limits.force_announced_channel_preference = false;
7320 config.channel_options.commit_upfront_shutdown_pubkey = false;
7321 let user_cfgs = [None, Some(config), None];
7322 let chanmon_cfgs = create_chanmon_cfgs(3);
7323 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
7324 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs);
7325 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
7327 // We test that in case of peer committing upfront to a script, if it changes at closing, we refuse to sign
7328 let flags = InitFeatures::known();
7329 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 1000000, 1000000, flags.clone(), flags.clone());
7330 nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7331 let mut node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[2].node.get_our_node_id());
7332 node_0_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
7333 // Test we enforce upfront_scriptpbukey if by providing a diffrent one at closing that we disconnect peer
7334 nodes[2].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
7335 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()));
7336 check_added_monitors!(nodes[2], 1);
7338 // We test that in case of peer committing upfront to a script, if it doesn't change at closing, we sign
7339 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 1000000, 1000000, flags.clone(), flags.clone());
7340 nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7341 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[2].node.get_our_node_id());
7342 // We test that in case of peer committing upfront to a script, if it oesn't change at closing, we sign
7343 nodes[2].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
7344 let events = nodes[2].node.get_and_clear_pending_msg_events();
7345 assert_eq!(events.len(), 1);
7347 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[0].node.get_our_node_id()) }
7348 _ => panic!("Unexpected event"),
7351 // We test that if case of peer non-signaling we don't enforce committed script at channel opening
7352 let flags_no = InitFeatures::known().clear_upfront_shutdown_script();
7353 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, flags_no, flags.clone());
7354 nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7355 let mut node_1_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
7356 node_1_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
7357 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_1_shutdown);
7358 let events = nodes[1].node.get_and_clear_pending_msg_events();
7359 assert_eq!(events.len(), 1);
7361 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[0].node.get_our_node_id()) }
7362 _ => panic!("Unexpected event"),
7365 // We test that if user opt-out, we provide a zero-length script at channel opening and we are able to close
7366 // channel smoothly, opt-out is from channel initiator here
7367 let chan = create_announced_chan_between_nodes_with_value(&nodes, 1, 0, 1000000, 1000000, flags.clone(), flags.clone());
7368 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7369 let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
7370 node_0_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
7371 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_0_shutdown);
7372 let events = nodes[0].node.get_and_clear_pending_msg_events();
7373 assert_eq!(events.len(), 1);
7375 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
7376 _ => panic!("Unexpected event"),
7379 //// We test that if user opt-out, we provide a zero-length script at channel opening and we are able to close
7380 //// channel smoothly
7381 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, flags.clone(), flags.clone());
7382 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7383 let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
7384 node_0_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
7385 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_0_shutdown);
7386 let events = nodes[0].node.get_and_clear_pending_msg_events();
7387 assert_eq!(events.len(), 2);
7389 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
7390 _ => panic!("Unexpected event"),
7393 MessageSendEvent::SendClosingSigned { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
7394 _ => panic!("Unexpected event"),
7399 fn test_user_configurable_csv_delay() {
7400 // We test our channel constructors yield errors when we pass them absurd csv delay
7402 let mut low_our_to_self_config = UserConfig::default();
7403 low_our_to_self_config.own_channel_config.our_to_self_delay = 6;
7404 let mut high_their_to_self_config = UserConfig::default();
7405 high_their_to_self_config.peer_channel_config_limits.their_to_self_delay = 100;
7406 let user_cfgs = [Some(high_their_to_self_config.clone()), None];
7407 let chanmon_cfgs = create_chanmon_cfgs(2);
7408 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7409 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &user_cfgs);
7410 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7412 // We test config.our_to_self > BREAKDOWN_TIMEOUT is enforced in Channel::new_outbound()
7413 let keys_manager: Arc<KeysInterface<ChanKeySigner = EnforcingChannelKeys>> = Arc::new(test_utils::TestKeysInterface::new(&nodes[0].node_seed, Network::Testnet));
7414 if let Err(error) = Channel::new_outbound(&&test_utils::TestFeeEstimator { sat_per_kw: 253 }, &keys_manager, nodes[1].node.get_our_node_id(), 1000000, 1000000, 0, &low_our_to_self_config) {
7416 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())); },
7417 _ => panic!("Unexpected event"),
7419 } else { assert!(false) }
7421 // We test config.our_to_self > BREAKDOWN_TIMEOUT is enforced in Channel::new_from_req()
7422 nodes[1].node.create_channel(nodes[0].node.get_our_node_id(), 1000000, 1000000, 42, None).unwrap();
7423 let mut open_channel = get_event_msg!(nodes[1], MessageSendEvent::SendOpenChannel, nodes[0].node.get_our_node_id());
7424 open_channel.to_self_delay = 200;
7425 if let Err(error) = Channel::new_from_req(&&test_utils::TestFeeEstimator { sat_per_kw: 253 }, &keys_manager, nodes[1].node.get_our_node_id(), InitFeatures::known(), &open_channel, 0, &low_our_to_self_config) {
7427 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())); },
7428 _ => panic!("Unexpected event"),
7430 } else { assert!(false); }
7432 // We test msg.to_self_delay <= config.their_to_self_delay is enforced in Chanel::accept_channel()
7433 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 1000000, 1000000, 42, None).unwrap();
7434 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()));
7435 let mut accept_channel = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
7436 accept_channel.to_self_delay = 200;
7437 nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &accept_channel);
7438 if let MessageSendEvent::HandleError { ref action, .. } = nodes[0].node.get_and_clear_pending_msg_events()[0] {
7440 &ErrorAction::SendErrorMessage { ref msg } => {
7441 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()));
7443 _ => { assert!(false); }
7445 } else { assert!(false); }
7447 // We test msg.to_self_delay <= config.their_to_self_delay is enforced in Channel::new_from_req()
7448 nodes[1].node.create_channel(nodes[0].node.get_our_node_id(), 1000000, 1000000, 42, None).unwrap();
7449 let mut open_channel = get_event_msg!(nodes[1], MessageSendEvent::SendOpenChannel, nodes[0].node.get_our_node_id());
7450 open_channel.to_self_delay = 200;
7451 if let Err(error) = Channel::new_from_req(&&test_utils::TestFeeEstimator { sat_per_kw: 253 }, &keys_manager, nodes[1].node.get_our_node_id(), InitFeatures::known(), &open_channel, 0, &high_their_to_self_config) {
7453 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())); },
7454 _ => panic!("Unexpected event"),
7456 } else { assert!(false); }
7460 fn test_data_loss_protect() {
7461 // We want to be sure that :
7462 // * we don't broadcast our Local Commitment Tx in case of fallen behind
7463 // * we close channel in case of detecting other being fallen behind
7464 // * we are able to claim our own outputs thanks to to_remote being static
7472 let chanmon_cfgs = create_chanmon_cfgs(2);
7473 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7474 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7475 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7477 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
7479 // Cache node A state before any channel update
7480 let previous_node_state = nodes[0].node.encode();
7481 let mut previous_chain_monitor_state = test_utils::TestVecWriter(Vec::new());
7482 nodes[0].chain_monitor.chain_monitor.monitors.lock().unwrap().iter().next().unwrap().1.write_for_disk(&mut previous_chain_monitor_state).unwrap();
7484 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
7485 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
7487 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
7488 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
7490 // Restore node A from previous state
7491 logger = test_utils::TestLogger::with_id(format!("node {}", 0));
7492 let mut chain_monitor = <(BlockHash, ChannelMonitor<EnforcingChannelKeys>)>::read(&mut ::std::io::Cursor::new(previous_chain_monitor_state.0)).unwrap().1;
7493 chain_source = test_utils::TestChainSource::new(Network::Testnet);
7494 tx_broadcaster = test_utils::TestBroadcaster{txn_broadcasted: Mutex::new(Vec::new())};
7495 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
7496 keys_manager = test_utils::TestKeysInterface::new(&nodes[0].node_seed, Network::Testnet);
7497 monitor = test_utils::TestChainMonitor::new(Some(&chain_source), &tx_broadcaster, &logger, &fee_estimator);
7499 let mut channel_monitors = HashMap::new();
7500 channel_monitors.insert(OutPoint { txid: chan.3.txid(), index: 0 }, &mut chain_monitor);
7501 <(BlockHash, ChannelManager<EnforcingChannelKeys, &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 {
7502 keys_manager: &keys_manager,
7503 fee_estimator: &fee_estimator,
7504 chain_monitor: &monitor,
7506 tx_broadcaster: &tx_broadcaster,
7507 default_config: UserConfig::default(),
7511 nodes[0].node = &node_state_0;
7512 assert!(monitor.watch_channel(OutPoint { txid: chan.3.txid(), index: 0 }, chain_monitor).is_ok());
7513 nodes[0].chain_monitor = &monitor;
7514 nodes[0].chain_source = &chain_source;
7516 check_added_monitors!(nodes[0], 1);
7518 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
7519 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
7521 let reestablish_0 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
7523 // Check we don't broadcast any transactions following learning of per_commitment_point from B
7524 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_0[0]);
7525 check_added_monitors!(nodes[0], 1);
7528 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
7529 assert_eq!(node_txn.len(), 0);
7532 let mut reestablish_1 = Vec::with_capacity(1);
7533 for msg in nodes[0].node.get_and_clear_pending_msg_events() {
7534 if let MessageSendEvent::SendChannelReestablish { ref node_id, ref msg } = msg {
7535 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
7536 reestablish_1.push(msg.clone());
7537 } else if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg {
7538 } else if let MessageSendEvent::HandleError { ref action, .. } = msg {
7540 &ErrorAction::SendErrorMessage { ref msg } => {
7541 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");
7543 _ => panic!("Unexpected event!"),
7546 panic!("Unexpected event")
7550 // Check we close channel detecting A is fallen-behind
7551 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
7552 assert_eq!(check_closed_broadcast!(nodes[1], true).unwrap().data, "Peer attempted to reestablish channel with a very old local commitment transaction");
7553 check_added_monitors!(nodes[1], 1);
7556 // Check A is able to claim to_remote output
7557 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
7558 assert_eq!(node_txn.len(), 1);
7559 check_spends!(node_txn[0], chan.3);
7560 assert_eq!(node_txn[0].output.len(), 2);
7561 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
7562 connect_block(&nodes[0], &Block { header, txdata: vec![node_txn[0].clone()]}, 0);
7563 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1, 0, true, header.block_hash());
7564 let spend_txn = check_spendable_outputs!(nodes[0], 1, node_cfgs[0].keys_manager, 100000);
7565 assert_eq!(spend_txn.len(), 1);
7566 check_spends!(spend_txn[0], node_txn[0]);
7570 fn test_check_htlc_underpaying() {
7571 // Send payment through A -> B but A is maliciously
7572 // sending a probe payment (i.e less than expected value0
7573 // to B, B should refuse payment.
7575 let chanmon_cfgs = create_chanmon_cfgs(2);
7576 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7577 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7578 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7580 // Create some initial channels
7581 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
7583 let (payment_preimage, payment_hash) = route_payment(&nodes[0], &[&nodes[1]], 10_000);
7585 // Node 3 is expecting payment of 100_000 but receive 10_000,
7586 // fail htlc like we didn't know the preimage.
7587 nodes[1].node.claim_funds(payment_preimage, &None, 100_000);
7588 nodes[1].node.process_pending_htlc_forwards();
7590 let events = nodes[1].node.get_and_clear_pending_msg_events();
7591 assert_eq!(events.len(), 1);
7592 let (update_fail_htlc, commitment_signed) = match events[0] {
7593 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 } } => {
7594 assert!(update_add_htlcs.is_empty());
7595 assert!(update_fulfill_htlcs.is_empty());
7596 assert_eq!(update_fail_htlcs.len(), 1);
7597 assert!(update_fail_malformed_htlcs.is_empty());
7598 assert!(update_fee.is_none());
7599 (update_fail_htlcs[0].clone(), commitment_signed)
7601 _ => panic!("Unexpected event"),
7603 check_added_monitors!(nodes[1], 1);
7605 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlc);
7606 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false, true);
7608 // 10_000 msat as u64, followed by a height of 99 as u32
7609 let mut expected_failure_data = byte_utils::be64_to_array(10_000).to_vec();
7610 expected_failure_data.extend_from_slice(&byte_utils::be32_to_array(99));
7611 expect_payment_failed!(nodes[0], payment_hash, true, 0x4000|15, &expected_failure_data[..]);
7612 nodes[1].node.get_and_clear_pending_events();
7616 fn test_announce_disable_channels() {
7617 // Create 2 channels between A and B. Disconnect B. Call timer_chan_freshness_every_min and check for generated
7618 // ChannelUpdate. Reconnect B, reestablish and check there is non-generated ChannelUpdate.
7620 let chanmon_cfgs = create_chanmon_cfgs(2);
7621 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7622 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7623 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7625 let short_id_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
7626 let short_id_2 = create_announced_chan_between_nodes(&nodes, 1, 0, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
7627 let short_id_3 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
7630 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
7631 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
7633 nodes[0].node.timer_chan_freshness_every_min(); // dirty -> stagged
7634 nodes[0].node.timer_chan_freshness_every_min(); // staged -> fresh
7635 let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
7636 assert_eq!(msg_events.len(), 3);
7637 for e in msg_events {
7639 MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
7640 let short_id = msg.contents.short_channel_id;
7641 // Check generated channel_update match list in PendingChannelUpdate
7642 if short_id != short_id_1 && short_id != short_id_2 && short_id != short_id_3 {
7643 panic!("Generated ChannelUpdate for wrong chan!");
7646 _ => panic!("Unexpected event"),
7650 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
7651 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
7652 assert_eq!(reestablish_1.len(), 3);
7653 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
7654 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
7655 assert_eq!(reestablish_2.len(), 3);
7657 // Reestablish chan_1
7658 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
7659 handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
7660 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
7661 handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
7662 // Reestablish chan_2
7663 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[1]);
7664 handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
7665 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[1]);
7666 handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
7667 // Reestablish chan_3
7668 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[2]);
7669 handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
7670 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[2]);
7671 handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
7673 nodes[0].node.timer_chan_freshness_every_min();
7674 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
7678 fn test_bump_penalty_txn_on_revoked_commitment() {
7679 // In case of penalty txn with too low feerates for getting into mempools, RBF-bump them to be sure
7680 // we're able to claim outputs on revoked commitment transaction before timelocks expiration
7682 let chanmon_cfgs = create_chanmon_cfgs(2);
7683 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7684 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7685 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7687 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
7688 let logger = test_utils::TestLogger::new();
7691 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
7692 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
7693 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(), None, &Vec::new(), 3000000, 30, &logger).unwrap();
7694 send_along_route(&nodes[1], route, &vec!(&nodes[0])[..], 3000000);
7696 let revoked_txn = get_local_commitment_txn!(nodes[0], chan.2);
7697 // Revoked commitment txn with 4 outputs : to_local, to_remote, 1 outgoing HTLC, 1 incoming HTLC
7698 assert_eq!(revoked_txn[0].output.len(), 4);
7699 assert_eq!(revoked_txn[0].input.len(), 1);
7700 assert_eq!(revoked_txn[0].input[0].previous_output.txid, chan.3.txid());
7701 let revoked_txid = revoked_txn[0].txid();
7703 let mut penalty_sum = 0;
7704 for outp in revoked_txn[0].output.iter() {
7705 if outp.script_pubkey.is_v0_p2wsh() {
7706 penalty_sum += outp.value;
7710 // Connect blocks to change height_timer range to see if we use right soonest_timelock
7711 let header_114 = connect_blocks(&nodes[1], 114, 0, false, Default::default());
7713 // Actually revoke tx by claiming a HTLC
7714 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 3_000_000);
7715 let header = BlockHeader { version: 0x20000000, prev_blockhash: header_114, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7716 connect_block(&nodes[1], &Block { header, txdata: vec![revoked_txn[0].clone()] }, 115);
7717 check_added_monitors!(nodes[1], 1);
7719 // One or more justice tx should have been broadcast, check it
7723 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7724 assert_eq!(node_txn.len(), 3); // justice tx (broadcasted from ChannelMonitor) + local commitment tx + local HTLC-timeout (broadcasted from ChannelManager)
7725 assert_eq!(node_txn[0].input.len(), 3); // Penalty txn claims to_local, offered_htlc and received_htlc outputs
7726 assert_eq!(node_txn[0].output.len(), 1);
7727 check_spends!(node_txn[0], revoked_txn[0]);
7728 let fee_1 = penalty_sum - node_txn[0].output[0].value;
7729 feerate_1 = fee_1 * 1000 / node_txn[0].get_weight() as u64;
7730 penalty_1 = node_txn[0].txid();
7734 // After exhaustion of height timer, a new bumped justice tx should have been broadcast, check it
7735 let header = connect_blocks(&nodes[1], 3, 115, true, header.block_hash());
7736 let mut penalty_2 = penalty_1;
7737 let mut feerate_2 = 0;
7739 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7740 assert_eq!(node_txn.len(), 1);
7741 if node_txn[0].input[0].previous_output.txid == revoked_txid {
7742 assert_eq!(node_txn[0].input.len(), 3); // Penalty txn claims to_local, offered_htlc and received_htlc outputs
7743 assert_eq!(node_txn[0].output.len(), 1);
7744 check_spends!(node_txn[0], revoked_txn[0]);
7745 penalty_2 = node_txn[0].txid();
7746 // Verify new bumped tx is different from last claiming transaction, we don't want spurrious rebroadcast
7747 assert_ne!(penalty_2, penalty_1);
7748 let fee_2 = penalty_sum - node_txn[0].output[0].value;
7749 feerate_2 = fee_2 * 1000 / node_txn[0].get_weight() as u64;
7750 // Verify 25% bump heuristic
7751 assert!(feerate_2 * 100 >= feerate_1 * 125);
7755 assert_ne!(feerate_2, 0);
7757 // After exhaustion of height timer for a 2nd time, a new bumped justice tx should have been broadcast, check it
7758 connect_blocks(&nodes[1], 3, 118, true, header);
7760 let mut feerate_3 = 0;
7762 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7763 assert_eq!(node_txn.len(), 1);
7764 if node_txn[0].input[0].previous_output.txid == revoked_txid {
7765 assert_eq!(node_txn[0].input.len(), 3); // Penalty txn claims to_local, offered_htlc and received_htlc outputs
7766 assert_eq!(node_txn[0].output.len(), 1);
7767 check_spends!(node_txn[0], revoked_txn[0]);
7768 penalty_3 = node_txn[0].txid();
7769 // Verify new bumped tx is different from last claiming transaction, we don't want spurrious rebroadcast
7770 assert_ne!(penalty_3, penalty_2);
7771 let fee_3 = penalty_sum - node_txn[0].output[0].value;
7772 feerate_3 = fee_3 * 1000 / node_txn[0].get_weight() as u64;
7773 // Verify 25% bump heuristic
7774 assert!(feerate_3 * 100 >= feerate_2 * 125);
7778 assert_ne!(feerate_3, 0);
7780 nodes[1].node.get_and_clear_pending_events();
7781 nodes[1].node.get_and_clear_pending_msg_events();
7785 fn test_bump_penalty_txn_on_revoked_htlcs() {
7786 // In case of penalty txn with too low feerates for getting into mempools, RBF-bump them to sure
7787 // we're able to claim outputs on revoked HTLC transactions before timelocks expiration
7789 let chanmon_cfgs = create_chanmon_cfgs(2);
7790 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7791 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7792 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7794 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
7795 // Lock HTLC in both directions
7796 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3_000_000).0;
7797 route_payment(&nodes[1], &vec!(&nodes[0])[..], 3_000_000).0;
7799 let revoked_local_txn = get_local_commitment_txn!(nodes[1], chan.2);
7800 assert_eq!(revoked_local_txn[0].input.len(), 1);
7801 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan.3.txid());
7803 // Revoke local commitment tx
7804 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 3_000_000);
7806 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7807 // B will generate both revoked HTLC-timeout/HTLC-preimage txn from revoked commitment tx
7808 connect_block(&nodes[1], &Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
7809 check_closed_broadcast!(nodes[1], false);
7810 check_added_monitors!(nodes[1], 1);
7812 let revoked_htlc_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7813 assert_eq!(revoked_htlc_txn.len(), 4);
7814 if revoked_htlc_txn[0].input[0].witness.last().unwrap().len() == ACCEPTED_HTLC_SCRIPT_WEIGHT {
7815 assert_eq!(revoked_htlc_txn[0].input.len(), 1);
7816 check_spends!(revoked_htlc_txn[0], revoked_local_txn[0]);
7817 assert_eq!(revoked_htlc_txn[1].input.len(), 1);
7818 assert_eq!(revoked_htlc_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
7819 assert_eq!(revoked_htlc_txn[1].output.len(), 1);
7820 check_spends!(revoked_htlc_txn[1], revoked_local_txn[0]);
7821 } else if revoked_htlc_txn[1].input[0].witness.last().unwrap().len() == ACCEPTED_HTLC_SCRIPT_WEIGHT {
7822 assert_eq!(revoked_htlc_txn[1].input.len(), 1);
7823 check_spends!(revoked_htlc_txn[1], revoked_local_txn[0]);
7824 assert_eq!(revoked_htlc_txn[0].input.len(), 1);
7825 assert_eq!(revoked_htlc_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
7826 assert_eq!(revoked_htlc_txn[0].output.len(), 1);
7827 check_spends!(revoked_htlc_txn[0], revoked_local_txn[0]);
7830 // Broadcast set of revoked txn on A
7831 let header_128 = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7832 connect_block(&nodes[0], &Block { header: header_128, txdata: vec![revoked_local_txn[0].clone()] }, 128);
7833 expect_pending_htlcs_forwardable_ignore!(nodes[0]);
7834 let header_129 = BlockHeader { version: 0x20000000, prev_blockhash: header_128.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7835 connect_block(&nodes[0], &Block { header: header_129, txdata: vec![revoked_htlc_txn[0].clone(), revoked_htlc_txn[1].clone()] }, 129);
7840 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
7841 assert_eq!(node_txn.len(), 5); // 3 penalty txn on revoked commitment tx + A commitment tx + 1 penalty tnx on revoked HTLC txn
7842 // Verify claim tx are spending revoked HTLC txn
7844 // node_txn 0-2 each spend a separate revoked output from revoked_local_txn[0]
7845 // Note that node_txn[0] and node_txn[1] are bogus - they double spend the revoked_htlc_txn
7846 // which are included in the same block (they are broadcasted because we scan the
7847 // transactions linearly and generate claims as we go, they likely should be removed in the
7849 assert_eq!(node_txn[0].input.len(), 1);
7850 check_spends!(node_txn[0], revoked_local_txn[0]);
7851 assert_eq!(node_txn[1].input.len(), 1);
7852 check_spends!(node_txn[1], revoked_local_txn[0]);
7853 assert_eq!(node_txn[2].input.len(), 1);
7854 check_spends!(node_txn[2], revoked_local_txn[0]);
7856 // Each of the three justice transactions claim a separate (single) output of the three
7857 // available, which we check here:
7858 assert_ne!(node_txn[0].input[0].previous_output, node_txn[1].input[0].previous_output);
7859 assert_ne!(node_txn[0].input[0].previous_output, node_txn[2].input[0].previous_output);
7860 assert_ne!(node_txn[1].input[0].previous_output, node_txn[2].input[0].previous_output);
7862 assert_eq!(node_txn[0].input[0].previous_output, revoked_htlc_txn[0].input[0].previous_output);
7863 assert_eq!(node_txn[1].input[0].previous_output, revoked_htlc_txn[1].input[0].previous_output);
7865 // node_txn[3] is the local commitment tx broadcast just because (and somewhat in case of
7866 // reorgs, though its not clear its ever worth broadcasting conflicting txn like this when
7867 // a remote commitment tx has already been confirmed).
7868 check_spends!(node_txn[3], chan.3);
7870 // node_txn[4] spends the revoked outputs from the revoked_htlc_txn (which only have one
7871 // output, checked above).
7872 assert_eq!(node_txn[4].input.len(), 2);
7873 assert_eq!(node_txn[4].output.len(), 1);
7874 check_spends!(node_txn[4], revoked_htlc_txn[0], revoked_htlc_txn[1]);
7876 first = node_txn[4].txid();
7877 // Store both feerates for later comparison
7878 let fee_1 = revoked_htlc_txn[0].output[0].value + revoked_htlc_txn[1].output[0].value - node_txn[4].output[0].value;
7879 feerate_1 = fee_1 * 1000 / node_txn[4].get_weight() as u64;
7880 penalty_txn = vec![node_txn[2].clone()];
7884 // Connect one more block to see if bumped penalty are issued for HTLC txn
7885 let header_130 = BlockHeader { version: 0x20000000, prev_blockhash: header_129.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7886 connect_block(&nodes[0], &Block { header: header_130, txdata: penalty_txn }, 130);
7887 let header_131 = BlockHeader { version: 0x20000000, prev_blockhash: header_130.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7888 connect_block(&nodes[0], &Block { header: header_131, txdata: Vec::new() }, 131);
7890 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
7891 assert_eq!(node_txn.len(), 2); // 2 bumped penalty txn on revoked commitment tx
7893 check_spends!(node_txn[0], revoked_local_txn[0]);
7894 check_spends!(node_txn[1], revoked_local_txn[0]);
7895 // Note that these are both bogus - they spend outputs already claimed in block 129:
7896 if node_txn[0].input[0].previous_output == revoked_htlc_txn[0].input[0].previous_output {
7897 assert_eq!(node_txn[1].input[0].previous_output, revoked_htlc_txn[1].input[0].previous_output);
7899 assert_eq!(node_txn[0].input[0].previous_output, revoked_htlc_txn[1].input[0].previous_output);
7900 assert_eq!(node_txn[1].input[0].previous_output, revoked_htlc_txn[0].input[0].previous_output);
7906 // Few more blocks to confirm penalty txn
7907 let header_135 = connect_blocks(&nodes[0], 4, 131, true, header_131.block_hash());
7908 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
7909 let header_144 = connect_blocks(&nodes[0], 9, 135, true, header_135);
7911 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
7912 assert_eq!(node_txn.len(), 1);
7914 assert_eq!(node_txn[0].input.len(), 2);
7915 check_spends!(node_txn[0], revoked_htlc_txn[0], revoked_htlc_txn[1]);
7916 // Verify bumped tx is different and 25% bump heuristic
7917 assert_ne!(first, node_txn[0].txid());
7918 let fee_2 = revoked_htlc_txn[0].output[0].value + revoked_htlc_txn[1].output[0].value - node_txn[0].output[0].value;
7919 let feerate_2 = fee_2 * 1000 / node_txn[0].get_weight() as u64;
7920 assert!(feerate_2 * 100 > feerate_1 * 125);
7921 let txn = vec![node_txn[0].clone()];
7925 // Broadcast claim txn and confirm blocks to avoid further bumps on this outputs
7926 let header_145 = BlockHeader { version: 0x20000000, prev_blockhash: header_144, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7927 connect_block(&nodes[0], &Block { header: header_145, txdata: node_txn }, 145);
7928 connect_blocks(&nodes[0], 20, 145, true, header_145.block_hash());
7930 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
7931 // We verify than no new transaction has been broadcast because previously
7932 // we were buggy on this exact behavior by not tracking for monitoring remote HTLC outputs (see #411)
7933 // which means we wouldn't see a spend of them by a justice tx and bumped justice tx
7934 // were generated forever instead of safe cleaning after confirmation and ANTI_REORG_SAFE_DELAY blocks.
7935 // Enforce spending of revoked htlc output by claiming transaction remove request as expected and dry
7936 // up bumped justice generation.
7937 assert_eq!(node_txn.len(), 0);
7940 check_closed_broadcast!(nodes[0], false);
7941 check_added_monitors!(nodes[0], 1);
7945 fn test_bump_penalty_txn_on_remote_commitment() {
7946 // In case of claim txn with too low feerates for getting into mempools, RBF-bump them to be sure
7947 // we're able to claim outputs on remote commitment transaction before timelocks expiration
7950 // Provide preimage for one
7951 // Check aggregation
7953 let chanmon_cfgs = create_chanmon_cfgs(2);
7954 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7955 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7956 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7958 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
7959 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
7960 route_payment(&nodes[1], &vec!(&nodes[0])[..], 3000000).0;
7962 // Remote commitment txn with 4 outputs : to_local, to_remote, 1 outgoing HTLC, 1 incoming HTLC
7963 let remote_txn = get_local_commitment_txn!(nodes[0], chan.2);
7964 assert_eq!(remote_txn[0].output.len(), 4);
7965 assert_eq!(remote_txn[0].input.len(), 1);
7966 assert_eq!(remote_txn[0].input[0].previous_output.txid, chan.3.txid());
7968 // Claim a HTLC without revocation (provide B monitor with preimage)
7969 nodes[1].node.claim_funds(payment_preimage, &None, 3_000_000);
7970 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7971 connect_block(&nodes[1], &Block { header, txdata: vec![remote_txn[0].clone()] }, 1);
7972 check_added_monitors!(nodes[1], 2);
7974 // One or more claim tx should have been broadcast, check it
7977 let feerate_timeout;
7978 let feerate_preimage;
7980 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7981 assert_eq!(node_txn.len(), 5); // 2 * claim tx (broadcasted from ChannelMonitor) + local commitment tx + local HTLC-timeout + local HTLC-success (broadcasted from ChannelManager)
7982 assert_eq!(node_txn[0].input.len(), 1);
7983 assert_eq!(node_txn[1].input.len(), 1);
7984 check_spends!(node_txn[0], remote_txn[0]);
7985 check_spends!(node_txn[1], remote_txn[0]);
7986 check_spends!(node_txn[2], chan.3);
7987 check_spends!(node_txn[3], node_txn[2]);
7988 check_spends!(node_txn[4], node_txn[2]);
7989 if node_txn[0].input[0].witness.last().unwrap().len() == ACCEPTED_HTLC_SCRIPT_WEIGHT {
7990 timeout = node_txn[0].txid();
7991 let index = node_txn[0].input[0].previous_output.vout;
7992 let fee = remote_txn[0].output[index as usize].value - node_txn[0].output[0].value;
7993 feerate_timeout = fee * 1000 / node_txn[0].get_weight() as u64;
7995 preimage = node_txn[1].txid();
7996 let index = node_txn[1].input[0].previous_output.vout;
7997 let fee = remote_txn[0].output[index as usize].value - node_txn[1].output[0].value;
7998 feerate_preimage = fee * 1000 / node_txn[1].get_weight() as u64;
8000 timeout = node_txn[1].txid();
8001 let index = node_txn[1].input[0].previous_output.vout;
8002 let fee = remote_txn[0].output[index as usize].value - node_txn[1].output[0].value;
8003 feerate_timeout = fee * 1000 / node_txn[1].get_weight() as u64;
8005 preimage = node_txn[0].txid();
8006 let index = node_txn[0].input[0].previous_output.vout;
8007 let fee = remote_txn[0].output[index as usize].value - node_txn[0].output[0].value;
8008 feerate_preimage = fee * 1000 / node_txn[0].get_weight() as u64;
8012 assert_ne!(feerate_timeout, 0);
8013 assert_ne!(feerate_preimage, 0);
8015 // After exhaustion of height timer, new bumped claim txn should have been broadcast, check it
8016 connect_blocks(&nodes[1], 15, 1, true, header.block_hash());
8018 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
8019 assert_eq!(node_txn.len(), 2);
8020 assert_eq!(node_txn[0].input.len(), 1);
8021 assert_eq!(node_txn[1].input.len(), 1);
8022 check_spends!(node_txn[0], remote_txn[0]);
8023 check_spends!(node_txn[1], remote_txn[0]);
8024 if node_txn[0].input[0].witness.last().unwrap().len() == ACCEPTED_HTLC_SCRIPT_WEIGHT {
8025 let index = node_txn[0].input[0].previous_output.vout;
8026 let fee = remote_txn[0].output[index as usize].value - node_txn[0].output[0].value;
8027 let new_feerate = fee * 1000 / node_txn[0].get_weight() as u64;
8028 assert!(new_feerate * 100 > feerate_timeout * 125);
8029 assert_ne!(timeout, node_txn[0].txid());
8031 let index = node_txn[1].input[0].previous_output.vout;
8032 let fee = remote_txn[0].output[index as usize].value - node_txn[1].output[0].value;
8033 let new_feerate = fee * 1000 / node_txn[1].get_weight() as u64;
8034 assert!(new_feerate * 100 > feerate_preimage * 125);
8035 assert_ne!(preimage, node_txn[1].txid());
8037 let index = node_txn[1].input[0].previous_output.vout;
8038 let fee = remote_txn[0].output[index as usize].value - node_txn[1].output[0].value;
8039 let new_feerate = fee * 1000 / node_txn[1].get_weight() as u64;
8040 assert!(new_feerate * 100 > feerate_timeout * 125);
8041 assert_ne!(timeout, node_txn[1].txid());
8043 let index = node_txn[0].input[0].previous_output.vout;
8044 let fee = remote_txn[0].output[index as usize].value - node_txn[0].output[0].value;
8045 let new_feerate = fee * 1000 / node_txn[0].get_weight() as u64;
8046 assert!(new_feerate * 100 > feerate_preimage * 125);
8047 assert_ne!(preimage, node_txn[0].txid());
8052 nodes[1].node.get_and_clear_pending_events();
8053 nodes[1].node.get_and_clear_pending_msg_events();
8057 fn test_set_outpoints_partial_claiming() {
8058 // - remote party claim tx, new bump tx
8059 // - disconnect remote claiming tx, new bump
8060 // - disconnect tx, see no tx anymore
8061 let chanmon_cfgs = create_chanmon_cfgs(2);
8062 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8063 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8064 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8066 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
8067 let payment_preimage_1 = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3_000_000).0;
8068 let payment_preimage_2 = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3_000_000).0;
8070 // Remote commitment txn with 4 outputs: to_local, to_remote, 2 outgoing HTLC
8071 let remote_txn = get_local_commitment_txn!(nodes[1], chan.2);
8072 assert_eq!(remote_txn.len(), 3);
8073 assert_eq!(remote_txn[0].output.len(), 4);
8074 assert_eq!(remote_txn[0].input.len(), 1);
8075 assert_eq!(remote_txn[0].input[0].previous_output.txid, chan.3.txid());
8076 check_spends!(remote_txn[1], remote_txn[0]);
8077 check_spends!(remote_txn[2], remote_txn[0]);
8079 // Connect blocks on node A to advance height towards TEST_FINAL_CLTV
8080 let prev_header_100 = connect_blocks(&nodes[1], 100, 0, false, Default::default());
8081 // Provide node A with both preimage
8082 nodes[0].node.claim_funds(payment_preimage_1, &None, 3_000_000);
8083 nodes[0].node.claim_funds(payment_preimage_2, &None, 3_000_000);
8084 check_added_monitors!(nodes[0], 2);
8085 nodes[0].node.get_and_clear_pending_events();
8086 nodes[0].node.get_and_clear_pending_msg_events();
8088 // Connect blocks on node A commitment transaction
8089 let header = BlockHeader { version: 0x20000000, prev_blockhash: prev_header_100, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8090 connect_block(&nodes[0], &Block { header, txdata: vec![remote_txn[0].clone()] }, 101);
8091 check_closed_broadcast!(nodes[0], false);
8092 check_added_monitors!(nodes[0], 1);
8093 // Verify node A broadcast tx claiming both HTLCs
8095 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8096 // ChannelMonitor: claim tx, ChannelManager: local commitment tx + HTLC-Success*2
8097 assert_eq!(node_txn.len(), 4);
8098 check_spends!(node_txn[0], remote_txn[0]);
8099 check_spends!(node_txn[1], chan.3);
8100 check_spends!(node_txn[2], node_txn[1]);
8101 check_spends!(node_txn[3], node_txn[1]);
8102 assert_eq!(node_txn[0].input.len(), 2);
8106 // Connect blocks on node B
8107 connect_blocks(&nodes[1], 135, 0, false, Default::default());
8108 check_closed_broadcast!(nodes[1], false);
8109 check_added_monitors!(nodes[1], 1);
8110 // Verify node B broadcast 2 HTLC-timeout txn
8111 let partial_claim_tx = {
8112 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
8113 assert_eq!(node_txn.len(), 3);
8114 check_spends!(node_txn[1], node_txn[0]);
8115 check_spends!(node_txn[2], node_txn[0]);
8116 assert_eq!(node_txn[1].input.len(), 1);
8117 assert_eq!(node_txn[2].input.len(), 1);
8121 // Broadcast partial claim on node A, should regenerate a claiming tx with HTLC dropped
8122 let header = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8123 connect_block(&nodes[0], &Block { header, txdata: vec![partial_claim_tx.clone()] }, 102);
8125 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8126 assert_eq!(node_txn.len(), 1);
8127 check_spends!(node_txn[0], remote_txn[0]);
8128 assert_eq!(node_txn[0].input.len(), 1); //dropped HTLC
8131 nodes[0].node.get_and_clear_pending_msg_events();
8133 // Disconnect last block on node A, should regenerate a claiming tx with HTLC dropped
8134 disconnect_block(&nodes[0], &header, 102);
8136 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8137 assert_eq!(node_txn.len(), 1);
8138 check_spends!(node_txn[0], remote_txn[0]);
8139 assert_eq!(node_txn[0].input.len(), 2); //resurrected HTLC
8143 //// Disconnect one more block and then reconnect multiple no transaction should be generated
8144 disconnect_block(&nodes[0], &header, 101);
8145 connect_blocks(&nodes[1], 15, 101, false, prev_header_100);
8147 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8148 assert_eq!(node_txn.len(), 0);
8154 fn test_counterparty_raa_skip_no_crash() {
8155 // Previously, if our counterparty sent two RAAs in a row without us having provided a
8156 // commitment transaction, we would have happily carried on and provided them the next
8157 // commitment transaction based on one RAA forward. This would probably eventually have led to
8158 // channel closure, but it would not have resulted in funds loss. Still, our
8159 // EnforcingChannelKeys would have paniced as it doesn't like jumps into the future. Here, we
8160 // check simply that the channel is closed in response to such an RAA, but don't check whether
8161 // we decide to punish our counterparty for revoking their funds (as we don't currently
8163 let chanmon_cfgs = create_chanmon_cfgs(2);
8164 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8165 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8166 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8167 let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
8169 let mut guard = nodes[0].node.channel_state.lock().unwrap();
8170 let keys = &guard.by_id.get_mut(&channel_id).unwrap().holder_keys;
8171 const INITIAL_COMMITMENT_NUMBER: u64 = (1 << 48) - 1;
8172 let next_per_commitment_point = PublicKey::from_secret_key(&Secp256k1::new(),
8173 &SecretKey::from_slice(&keys.release_commitment_secret(INITIAL_COMMITMENT_NUMBER - 2)).unwrap());
8174 let per_commitment_secret = keys.release_commitment_secret(INITIAL_COMMITMENT_NUMBER);
8176 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(),
8177 &msgs::RevokeAndACK { channel_id, per_commitment_secret, next_per_commitment_point });
8178 assert_eq!(check_closed_broadcast!(nodes[1], true).unwrap().data, "Received an unexpected revoke_and_ack");
8179 check_added_monitors!(nodes[1], 1);
8183 fn test_bump_txn_sanitize_tracking_maps() {
8184 // Sanitizing pendning_claim_request and claimable_outpoints used to be buggy,
8185 // verify we clean then right after expiration of ANTI_REORG_DELAY.
8187 let chanmon_cfgs = create_chanmon_cfgs(2);
8188 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8189 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8190 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8192 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
8193 // Lock HTLC in both directions
8194 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9_000_000).0;
8195 route_payment(&nodes[1], &vec!(&nodes[0])[..], 9_000_000).0;
8197 let revoked_local_txn = get_local_commitment_txn!(nodes[1], chan.2);
8198 assert_eq!(revoked_local_txn[0].input.len(), 1);
8199 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan.3.txid());
8201 // Revoke local commitment tx
8202 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 9_000_000);
8204 // Broadcast set of revoked txn on A
8205 let header_128 = connect_blocks(&nodes[0], 128, 0, false, Default::default());
8206 expect_pending_htlcs_forwardable_ignore!(nodes[0]);
8208 let header_129 = BlockHeader { version: 0x20000000, prev_blockhash: header_128, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8209 connect_block(&nodes[0], &Block { header: header_129, txdata: vec![revoked_local_txn[0].clone()] }, 129);
8210 check_closed_broadcast!(nodes[0], false);
8211 check_added_monitors!(nodes[0], 1);
8213 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8214 assert_eq!(node_txn.len(), 4); //ChannelMonitor: justice txn * 3, ChannelManager: local commitment tx
8215 check_spends!(node_txn[0], revoked_local_txn[0]);
8216 check_spends!(node_txn[1], revoked_local_txn[0]);
8217 check_spends!(node_txn[2], revoked_local_txn[0]);
8218 let penalty_txn = vec![node_txn[0].clone(), node_txn[1].clone(), node_txn[2].clone()];
8222 let header_130 = BlockHeader { version: 0x20000000, prev_blockhash: header_129.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8223 connect_block(&nodes[0], &Block { header: header_130, txdata: penalty_txn }, 130);
8224 connect_blocks(&nodes[0], 5, 130, false, header_130.block_hash());
8226 let monitors = nodes[0].chain_monitor.chain_monitor.monitors.lock().unwrap();
8227 if let Some(monitor) = monitors.get(&OutPoint { txid: chan.3.txid(), index: 0 }) {
8228 assert!(monitor.onchain_tx_handler.pending_claim_requests.is_empty());
8229 assert!(monitor.onchain_tx_handler.claimable_outpoints.is_empty());
8235 fn test_override_channel_config() {
8236 let chanmon_cfgs = create_chanmon_cfgs(2);
8237 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8238 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8239 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8241 // Node0 initiates a channel to node1 using the override config.
8242 let mut override_config = UserConfig::default();
8243 override_config.own_channel_config.our_to_self_delay = 200;
8245 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 16_000_000, 12_000_000, 42, Some(override_config)).unwrap();
8247 // Assert the channel created by node0 is using the override config.
8248 let res = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
8249 assert_eq!(res.channel_flags, 0);
8250 assert_eq!(res.to_self_delay, 200);
8254 fn test_override_0msat_htlc_minimum() {
8255 let mut zero_config = UserConfig::default();
8256 zero_config.own_channel_config.our_htlc_minimum_msat = 0;
8257 let chanmon_cfgs = create_chanmon_cfgs(2);
8258 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8259 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, Some(zero_config.clone())]);
8260 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8262 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 16_000_000, 12_000_000, 42, Some(zero_config)).unwrap();
8263 let res = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
8264 assert_eq!(res.htlc_minimum_msat, 1);
8266 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &res);
8267 let res = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
8268 assert_eq!(res.htlc_minimum_msat, 1);
8272 fn test_simple_payment_secret() {
8273 // Simple test of sending a payment with a payment_secret present. This does not use any AMP
8274 // features, however.
8275 let chanmon_cfgs = create_chanmon_cfgs(3);
8276 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
8277 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
8278 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
8280 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
8281 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
8282 let logger = test_utils::TestLogger::new();
8284 let (payment_preimage, payment_hash) = get_payment_preimage_hash!(&nodes[0]);
8285 let payment_secret = PaymentSecret([0xdb; 32]);
8286 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
8287 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(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
8288 send_along_route_with_secret(&nodes[0], route, &[&[&nodes[1], &nodes[2]]], 100000, payment_hash, Some(payment_secret.clone()));
8289 // Claiming with all the correct values but the wrong secret should result in nothing...
8290 assert_eq!(nodes[2].node.claim_funds(payment_preimage, &None, 100_000), false);
8291 assert_eq!(nodes[2].node.claim_funds(payment_preimage, &Some(PaymentSecret([42; 32])), 100_000), false);
8292 // ...but with the right secret we should be able to claim all the way back
8293 claim_payment_along_route_with_secret(&nodes[0], &[&[&nodes[1], &nodes[2]]], false, payment_preimage, Some(payment_secret.clone()), 100_000);
8297 fn test_simple_mpp() {
8298 // Simple test of sending a multi-path payment.
8299 let chanmon_cfgs = create_chanmon_cfgs(4);
8300 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
8301 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
8302 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
8304 let chan_1_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
8305 let chan_2_id = create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
8306 let chan_3_id = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
8307 let chan_4_id = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
8308 let logger = test_utils::TestLogger::new();
8310 let (payment_preimage, payment_hash) = get_payment_preimage_hash!(&nodes[0]);
8311 let payment_secret = PaymentSecret([0xdb; 32]);
8312 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
8313 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(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
8314 let path = route.paths[0].clone();
8315 route.paths.push(path);
8316 route.paths[0][0].pubkey = nodes[1].node.get_our_node_id();
8317 route.paths[0][0].short_channel_id = chan_1_id;
8318 route.paths[0][1].short_channel_id = chan_3_id;
8319 route.paths[1][0].pubkey = nodes[2].node.get_our_node_id();
8320 route.paths[1][0].short_channel_id = chan_2_id;
8321 route.paths[1][1].short_channel_id = chan_4_id;
8322 send_along_route_with_secret(&nodes[0], route, &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], 200_000, payment_hash, Some(payment_secret.clone()));
8323 // Claiming with all the correct values but the wrong secret should result in nothing...
8324 assert_eq!(nodes[3].node.claim_funds(payment_preimage, &None, 200_000), false);
8325 assert_eq!(nodes[3].node.claim_funds(payment_preimage, &Some(PaymentSecret([42; 32])), 200_000), false);
8326 // ...but with the right secret we should be able to claim all the way back
8327 claim_payment_along_route_with_secret(&nodes[0], &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], false, payment_preimage, Some(payment_secret), 200_000);
8331 fn test_update_err_monitor_lockdown() {
8332 // Our monitor will lock update of local commitment transaction if a broadcastion condition
8333 // has been fulfilled (either force-close from Channel or block height requiring a HTLC-
8334 // timeout). Trying to update monitor after lockdown should return a ChannelMonitorUpdateErr.
8336 // This scenario may happen in a watchtower setup, where watchtower process a block height
8337 // triggering a timeout while a slow-block-processing ChannelManager receives a local signed
8338 // commitment at same time.
8340 let chanmon_cfgs = create_chanmon_cfgs(2);
8341 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8342 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8343 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8345 // Create some initial channel
8346 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
8347 let outpoint = OutPoint { txid: chan_1.3.txid(), index: 0 };
8349 // Rebalance the network to generate htlc in the two directions
8350 send_payment(&nodes[0], &vec!(&nodes[1])[..], 10_000_000, 10_000_000);
8352 // Route a HTLC from node 0 to node 1 (but don't settle)
8353 let preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9_000_000).0;
8355 // Copy ChainMonitor to simulate a watchtower and update block height of node 0 until its ChannelMonitor timeout HTLC onchain
8356 let chain_source = test_utils::TestChainSource::new(Network::Testnet);
8357 let logger = test_utils::TestLogger::with_id(format!("node {}", 0));
8359 let monitors = nodes[0].chain_monitor.chain_monitor.monitors.lock().unwrap();
8360 let monitor = monitors.get(&outpoint).unwrap();
8361 let mut w = test_utils::TestVecWriter(Vec::new());
8362 monitor.write_for_disk(&mut w).unwrap();
8363 let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingChannelKeys>)>::read(
8364 &mut ::std::io::Cursor::new(&w.0)).unwrap().1;
8365 assert!(new_monitor == *monitor);
8366 let watchtower = test_utils::TestChainMonitor::new(Some(&chain_source), &chanmon_cfgs[0].tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator);
8367 assert!(watchtower.watch_channel(outpoint, new_monitor).is_ok());
8370 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8371 watchtower.chain_monitor.block_connected(&header, &[], 200);
8373 // Try to update ChannelMonitor
8374 assert!(nodes[1].node.claim_funds(preimage, &None, 9_000_000));
8375 check_added_monitors!(nodes[1], 1);
8376 let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
8377 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
8378 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
8379 if let Some(ref mut channel) = nodes[0].node.channel_state.lock().unwrap().by_id.get_mut(&chan_1.2) {
8380 if let Ok((_, _, _, update)) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].fee_estimator, &node_cfgs[0].logger) {
8381 if let Err(_) = watchtower.chain_monitor.update_channel(outpoint, update.clone()) {} else { assert!(false); }
8382 if let Ok(_) = nodes[0].chain_monitor.update_channel(outpoint, update) {} else { assert!(false); }
8383 } else { assert!(false); }
8384 } else { assert!(false); };
8385 // Our local monitor is in-sync and hasn't processed yet timeout
8386 check_added_monitors!(nodes[0], 1);
8387 let events = nodes[0].node.get_and_clear_pending_events();
8388 assert_eq!(events.len(), 1);
8392 fn test_concurrent_monitor_claim() {
8393 // Watchtower A receives block, broadcasts state N, then channel receives new state N+1,
8394 // sending it to both watchtowers, Bob accepts N+1, then receives block and broadcasts
8395 // the latest state N+1, Alice rejects state N+1, but Bob has already broadcast it,
8396 // state N+1 confirms. Alice claims output from state N+1.
8398 let chanmon_cfgs = create_chanmon_cfgs(2);
8399 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8400 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8401 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8403 // Create some initial channel
8404 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
8405 let outpoint = OutPoint { txid: chan_1.3.txid(), index: 0 };
8407 // Rebalance the network to generate htlc in the two directions
8408 send_payment(&nodes[0], &vec!(&nodes[1])[..], 10_000_000, 10_000_000);
8410 // Route a HTLC from node 0 to node 1 (but don't settle)
8411 route_payment(&nodes[0], &vec!(&nodes[1])[..], 9_000_000).0;
8413 // Copy ChainMonitor to simulate watchtower Alice and update block height her ChannelMonitor timeout HTLC onchain
8414 let chain_source = test_utils::TestChainSource::new(Network::Testnet);
8415 let logger = test_utils::TestLogger::with_id(format!("node {}", "Alice"));
8416 let watchtower_alice = {
8417 let monitors = nodes[0].chain_monitor.chain_monitor.monitors.lock().unwrap();
8418 let monitor = monitors.get(&outpoint).unwrap();
8419 let mut w = test_utils::TestVecWriter(Vec::new());
8420 monitor.write_for_disk(&mut w).unwrap();
8421 let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingChannelKeys>)>::read(
8422 &mut ::std::io::Cursor::new(&w.0)).unwrap().1;
8423 assert!(new_monitor == *monitor);
8424 let watchtower = test_utils::TestChainMonitor::new(Some(&chain_source), &chanmon_cfgs[0].tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator);
8425 assert!(watchtower.watch_channel(outpoint, new_monitor).is_ok());
8428 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8429 watchtower_alice.chain_monitor.block_connected(&header, &vec![], 135);
8431 // Watchtower Alice should have broadcast a commitment/HTLC-timeout
8433 let mut txn = chanmon_cfgs[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8434 assert_eq!(txn.len(), 2);
8438 // Copy ChainMonitor to simulate watchtower Bob and make it receive a commitment update first.
8439 let chain_source = test_utils::TestChainSource::new(Network::Testnet);
8440 let logger = test_utils::TestLogger::with_id(format!("node {}", "Bob"));
8441 let watchtower_bob = {
8442 let monitors = nodes[0].chain_monitor.chain_monitor.monitors.lock().unwrap();
8443 let monitor = monitors.get(&outpoint).unwrap();
8444 let mut w = test_utils::TestVecWriter(Vec::new());
8445 monitor.write_for_disk(&mut w).unwrap();
8446 let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingChannelKeys>)>::read(
8447 &mut ::std::io::Cursor::new(&w.0)).unwrap().1;
8448 assert!(new_monitor == *monitor);
8449 let watchtower = test_utils::TestChainMonitor::new(Some(&chain_source), &chanmon_cfgs[0].tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator);
8450 assert!(watchtower.watch_channel(outpoint, new_monitor).is_ok());
8453 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8454 watchtower_bob.chain_monitor.block_connected(&header, &vec![], 134);
8456 // Route another payment to generate another update with still previous HTLC pending
8457 let (_, payment_hash) = get_payment_preimage_hash!(nodes[0]);
8459 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
8460 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(), None, &Vec::new(), 3000000 , TEST_FINAL_CLTV, &logger).unwrap();
8461 nodes[1].node.send_payment(&route, payment_hash, &None).unwrap();
8463 check_added_monitors!(nodes[1], 1);
8465 let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
8466 assert_eq!(updates.update_add_htlcs.len(), 1);
8467 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &updates.update_add_htlcs[0]);
8468 if let Some(ref mut channel) = nodes[0].node.channel_state.lock().unwrap().by_id.get_mut(&chan_1.2) {
8469 if let Ok((_, _, _, update)) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].fee_estimator, &node_cfgs[0].logger) {
8470 // Watchtower Alice should already have seen the block and reject the update
8471 if let Err(_) = watchtower_alice.chain_monitor.update_channel(outpoint, update.clone()) {} else { assert!(false); }
8472 if let Ok(_) = watchtower_bob.chain_monitor.update_channel(outpoint, update.clone()) {} else { assert!(false); }
8473 if let Ok(_) = nodes[0].chain_monitor.update_channel(outpoint, update) {} else { assert!(false); }
8474 } else { assert!(false); }
8475 } else { assert!(false); };
8476 // Our local monitor is in-sync and hasn't processed yet timeout
8477 check_added_monitors!(nodes[0], 1);
8479 //// Provide one more block to watchtower Bob, expect broadcast of commitment and HTLC-Timeout
8480 watchtower_bob.chain_monitor.block_connected(&header, &vec![], 135);
8482 // Watchtower Bob should have broadcast a commitment/HTLC-timeout
8485 let mut txn = chanmon_cfgs[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8486 assert_eq!(txn.len(), 2);
8487 bob_state_y = txn[0].clone();
8491 // We confirm Bob's state Y on Alice, she should broadcast a HTLC-timeout
8492 watchtower_alice.chain_monitor.block_connected(&header, &vec![(0, &bob_state_y)], 136);
8494 let htlc_txn = chanmon_cfgs[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8495 // We broadcast twice the transaction, once due to the HTLC-timeout, once due
8496 // the onchain detection of the HTLC output
8497 assert_eq!(htlc_txn.len(), 2);
8498 check_spends!(htlc_txn[0], bob_state_y);
8499 check_spends!(htlc_txn[1], bob_state_y);