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 the payment retry logic in ChannelManager, including various edge-cases around
11 //! serialization ordering between ChannelManager/ChannelMonitors and ensuring we can still retry
12 //! payments thereafter.
14 use chain::{ChannelMonitorUpdateErr, Confirm, Listen, Watch};
15 use chain::channelmonitor::{ANTI_REORG_DELAY, ChannelMonitor, LATENCY_GRACE_PERIOD_BLOCKS};
16 use chain::transaction::OutPoint;
17 use chain::keysinterface::KeysInterface;
18 use ln::channel::EXPIRE_PREV_CONFIG_TICKS;
19 use ln::channelmanager::{self, BREAKDOWN_TIMEOUT, ChannelManager, ChannelManagerReadArgs, MPP_TIMEOUT_TICKS, MIN_CLTV_EXPIRY_DELTA, PaymentId, PaymentSendFailure};
21 use ln::msgs::ChannelMessageHandler;
22 use routing::router::{PaymentParameters, get_route};
23 use util::events::{ClosureReason, Event, HTLCDestination, MessageSendEvent, MessageSendEventsProvider};
25 use util::errors::APIError;
26 use util::enforcing_trait_impls::EnforcingSigner;
27 use util::ser::{ReadableArgs, Writeable};
30 use bitcoin::{Block, BlockHeader, BlockHash, TxMerkleNode};
31 use bitcoin::hashes::Hash;
32 use bitcoin::network::constants::Network;
36 use ln::functional_test_utils::*;
39 fn retry_single_path_payment() {
40 let chanmon_cfgs = create_chanmon_cfgs(3);
41 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
42 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
43 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
45 let _chan_0 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
46 let chan_1 = create_announced_chan_between_nodes(&nodes, 2, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
47 // Rebalance to find a route
48 send_payment(&nodes[2], &vec!(&nodes[1])[..], 3_000_000);
50 let (route, payment_hash, payment_preimage, payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], 100_000);
52 // Rebalance so that the first hop fails.
53 send_payment(&nodes[1], &vec!(&nodes[2])[..], 2_000_000);
55 // Make sure the payment fails on the first hop.
56 let payment_id = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
57 check_added_monitors!(nodes[0], 1);
58 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
59 assert_eq!(events.len(), 1);
60 let mut payment_event = SendEvent::from_event(events.pop().unwrap());
61 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
62 check_added_monitors!(nodes[1], 0);
63 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
64 expect_pending_htlcs_forwardable!(nodes[1]);
65 expect_pending_htlcs_forwardable_and_htlc_handling_failed!(&nodes[1], vec![HTLCDestination::NextHopChannel { node_id: Some(nodes[2].node.get_our_node_id()), channel_id: chan_1.2 }]);
66 let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
67 assert!(htlc_updates.update_add_htlcs.is_empty());
68 assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
69 assert!(htlc_updates.update_fulfill_htlcs.is_empty());
70 assert!(htlc_updates.update_fail_malformed_htlcs.is_empty());
71 check_added_monitors!(nodes[1], 1);
72 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]);
73 commitment_signed_dance!(nodes[0], nodes[1], htlc_updates.commitment_signed, false);
74 expect_payment_failed_conditions(&nodes[0], payment_hash, false, PaymentFailedConditions::new().mpp_parts_remain());
76 // Rebalance the channel so the retry succeeds.
77 send_payment(&nodes[2], &vec!(&nodes[1])[..], 3_000_000);
79 // Mine two blocks (we expire retries after 3, so this will check that we don't expire early)
80 connect_blocks(&nodes[0], 2);
82 // Retry the payment and make sure it succeeds.
83 nodes[0].node.retry_payment(&route, payment_id).unwrap();
84 check_added_monitors!(nodes[0], 1);
85 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
86 assert_eq!(events.len(), 1);
87 pass_along_path(&nodes[0], &[&nodes[1], &nodes[2]], 100_000, payment_hash, Some(payment_secret), events.pop().unwrap(), true, None);
88 claim_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[2]]], false, payment_preimage);
93 let chanmon_cfgs = create_chanmon_cfgs(4);
94 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
95 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
96 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
98 let chan_1_id = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features()).0.contents.short_channel_id;
99 let chan_2_id = create_announced_chan_between_nodes(&nodes, 0, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features()).0.contents.short_channel_id;
100 let chan_3_id = create_announced_chan_between_nodes(&nodes, 1, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features()).0.contents.short_channel_id;
101 let chan_4_id = create_announced_chan_between_nodes(&nodes, 2, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features()).0.contents.short_channel_id;
103 let (mut route, payment_hash, _, payment_secret) = get_route_and_payment_hash!(&nodes[0], nodes[3], 100000);
104 let path = route.paths[0].clone();
105 route.paths.push(path);
106 route.paths[0][0].pubkey = nodes[1].node.get_our_node_id();
107 route.paths[0][0].short_channel_id = chan_1_id;
108 route.paths[0][1].short_channel_id = chan_3_id;
109 route.paths[1][0].pubkey = nodes[2].node.get_our_node_id();
110 route.paths[1][0].short_channel_id = chan_2_id;
111 route.paths[1][1].short_channel_id = chan_4_id;
112 send_along_route_with_secret(&nodes[0], route, &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], 200_000, payment_hash, payment_secret);
113 fail_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], false, payment_hash);
118 let chanmon_cfgs = create_chanmon_cfgs(4);
119 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
120 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
121 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
123 let (chan_1_update, _, _, _) = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
124 let (chan_2_update, _, _, _) = create_announced_chan_between_nodes(&nodes, 0, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
125 let (chan_3_update, _, _, _) = create_announced_chan_between_nodes(&nodes, 1, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features());
126 let (chan_4_update, _, chan_4_id, _) = create_announced_chan_between_nodes(&nodes, 3, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
128 send_payment(&nodes[3], &vec!(&nodes[2])[..], 1_500_000);
130 let (mut route, payment_hash, payment_preimage, payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[3], 1_000_000);
131 let path = route.paths[0].clone();
132 route.paths.push(path);
133 route.paths[0][0].pubkey = nodes[1].node.get_our_node_id();
134 route.paths[0][0].short_channel_id = chan_1_update.contents.short_channel_id;
135 route.paths[0][1].short_channel_id = chan_3_update.contents.short_channel_id;
136 route.paths[1][0].pubkey = nodes[2].node.get_our_node_id();
137 route.paths[1][0].short_channel_id = chan_2_update.contents.short_channel_id;
138 route.paths[1][1].short_channel_id = chan_4_update.contents.short_channel_id;
140 // Initiate the MPP payment.
141 let payment_id = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
142 check_added_monitors!(nodes[0], 2); // one monitor per path
143 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
144 assert_eq!(events.len(), 2);
146 // Pass half of the payment along the success path.
147 let success_path_msgs = events.remove(0);
148 pass_along_path(&nodes[0], &[&nodes[1], &nodes[3]], 2_000_000, payment_hash, Some(payment_secret), success_path_msgs, false, None);
150 // Add the HTLC along the first hop.
151 let fail_path_msgs_1 = events.remove(0);
152 let (update_add, commitment_signed) = match fail_path_msgs_1 {
153 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 } } => {
154 assert_eq!(update_add_htlcs.len(), 1);
155 assert!(update_fail_htlcs.is_empty());
156 assert!(update_fulfill_htlcs.is_empty());
157 assert!(update_fail_malformed_htlcs.is_empty());
158 assert!(update_fee.is_none());
159 (update_add_htlcs[0].clone(), commitment_signed.clone())
161 _ => panic!("Unexpected event"),
163 nodes[2].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &update_add);
164 commitment_signed_dance!(nodes[2], nodes[0], commitment_signed, false);
166 // Attempt to forward the payment and complete the 2nd path's failure.
167 expect_pending_htlcs_forwardable!(&nodes[2]);
168 expect_pending_htlcs_forwardable_and_htlc_handling_failed!(&nodes[2], vec![HTLCDestination::NextHopChannel { node_id: Some(nodes[3].node.get_our_node_id()), channel_id: chan_4_id }]);
169 let htlc_updates = get_htlc_update_msgs!(nodes[2], nodes[0].node.get_our_node_id());
170 assert!(htlc_updates.update_add_htlcs.is_empty());
171 assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
172 assert!(htlc_updates.update_fulfill_htlcs.is_empty());
173 assert!(htlc_updates.update_fail_malformed_htlcs.is_empty());
174 check_added_monitors!(nodes[2], 1);
175 nodes[0].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]);
176 commitment_signed_dance!(nodes[0], nodes[2], htlc_updates.commitment_signed, false);
177 expect_payment_failed_conditions(&nodes[0], payment_hash, false, PaymentFailedConditions::new().mpp_parts_remain());
179 // Rebalance the channel so the second half of the payment can succeed.
180 send_payment(&nodes[3], &vec!(&nodes[2])[..], 1_500_000);
182 // Make sure it errors as expected given a too-large amount.
183 if let Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError { err })) = nodes[0].node.retry_payment(&route, payment_id) {
184 assert!(err.contains("over total_payment_amt_msat"));
185 } else { panic!("Unexpected error"); }
187 // Make sure it errors as expected given the wrong payment_id.
188 if let Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError { err })) = nodes[0].node.retry_payment(&route, PaymentId([0; 32])) {
189 assert!(err.contains("not found"));
190 } else { panic!("Unexpected error"); }
192 // Retry the second half of the payment and make sure it succeeds.
193 let mut path = route.clone();
194 path.paths.remove(0);
195 nodes[0].node.retry_payment(&path, payment_id).unwrap();
196 check_added_monitors!(nodes[0], 1);
197 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
198 assert_eq!(events.len(), 1);
199 pass_along_path(&nodes[0], &[&nodes[2], &nodes[3]], 2_000_000, payment_hash, Some(payment_secret), events.pop().unwrap(), true, None);
200 claim_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], false, payment_preimage);
203 fn do_mpp_receive_timeout(send_partial_mpp: bool) {
204 let chanmon_cfgs = create_chanmon_cfgs(4);
205 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
206 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
207 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
209 let (chan_1_update, _, _, _) = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
210 let (chan_2_update, _, _, _) = create_announced_chan_between_nodes(&nodes, 0, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
211 let (chan_3_update, _, chan_3_id, _) = create_announced_chan_between_nodes(&nodes, 1, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features());
212 let (chan_4_update, _, _, _) = create_announced_chan_between_nodes(&nodes, 2, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features());
214 let (mut route, payment_hash, payment_preimage, payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[3], 100_000);
215 let path = route.paths[0].clone();
216 route.paths.push(path);
217 route.paths[0][0].pubkey = nodes[1].node.get_our_node_id();
218 route.paths[0][0].short_channel_id = chan_1_update.contents.short_channel_id;
219 route.paths[0][1].short_channel_id = chan_3_update.contents.short_channel_id;
220 route.paths[1][0].pubkey = nodes[2].node.get_our_node_id();
221 route.paths[1][0].short_channel_id = chan_2_update.contents.short_channel_id;
222 route.paths[1][1].short_channel_id = chan_4_update.contents.short_channel_id;
224 // Initiate the MPP payment.
225 let _ = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
226 check_added_monitors!(nodes[0], 2); // one monitor per path
227 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
228 assert_eq!(events.len(), 2);
230 // Pass half of the payment along the first path.
231 pass_along_path(&nodes[0], &[&nodes[1], &nodes[3]], 200_000, payment_hash, Some(payment_secret), events.remove(0), false, None);
233 if send_partial_mpp {
234 // Time out the partial MPP
235 for _ in 0..MPP_TIMEOUT_TICKS {
236 nodes[3].node.timer_tick_occurred();
239 // Failed HTLC from node 3 -> 1
240 expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[3], vec![HTLCDestination::FailedPayment { payment_hash }]);
241 let htlc_fail_updates_3_1 = get_htlc_update_msgs!(nodes[3], nodes[1].node.get_our_node_id());
242 assert_eq!(htlc_fail_updates_3_1.update_fail_htlcs.len(), 1);
243 nodes[1].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &htlc_fail_updates_3_1.update_fail_htlcs[0]);
244 check_added_monitors!(nodes[3], 1);
245 commitment_signed_dance!(nodes[1], nodes[3], htlc_fail_updates_3_1.commitment_signed, false);
247 // Failed HTLC from node 1 -> 0
248 expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[1], vec![HTLCDestination::NextHopChannel { node_id: Some(nodes[3].node.get_our_node_id()), channel_id: chan_3_id }]);
249 let htlc_fail_updates_1_0 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
250 assert_eq!(htlc_fail_updates_1_0.update_fail_htlcs.len(), 1);
251 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_fail_updates_1_0.update_fail_htlcs[0]);
252 check_added_monitors!(nodes[1], 1);
253 commitment_signed_dance!(nodes[0], nodes[1], htlc_fail_updates_1_0.commitment_signed, false);
255 expect_payment_failed_conditions(&nodes[0], payment_hash, false, PaymentFailedConditions::new().mpp_parts_remain().expected_htlc_error_data(23, &[][..]));
257 // Pass half of the payment along the second path.
258 pass_along_path(&nodes[0], &[&nodes[2], &nodes[3]], 200_000, payment_hash, Some(payment_secret), events.remove(0), true, None);
260 // Even after MPP_TIMEOUT_TICKS we should not timeout the MPP if we have all the parts
261 for _ in 0..MPP_TIMEOUT_TICKS {
262 nodes[3].node.timer_tick_occurred();
265 claim_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], false, payment_preimage);
270 fn mpp_receive_timeout() {
271 do_mpp_receive_timeout(true);
272 do_mpp_receive_timeout(false);
276 fn retry_expired_payment() {
277 let chanmon_cfgs = create_chanmon_cfgs(3);
278 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
279 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
280 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
282 let _chan_0 = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
283 let chan_1 = create_announced_chan_between_nodes(&nodes, 2, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
284 // Rebalance to find a route
285 send_payment(&nodes[2], &vec!(&nodes[1])[..], 3_000_000);
287 let (route, payment_hash, _, payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], 100_000);
289 // Rebalance so that the first hop fails.
290 send_payment(&nodes[1], &vec!(&nodes[2])[..], 2_000_000);
292 // Make sure the payment fails on the first hop.
293 let payment_id = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
294 check_added_monitors!(nodes[0], 1);
295 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
296 assert_eq!(events.len(), 1);
297 let mut payment_event = SendEvent::from_event(events.pop().unwrap());
298 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
299 check_added_monitors!(nodes[1], 0);
300 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
301 expect_pending_htlcs_forwardable!(nodes[1]);
302 expect_pending_htlcs_forwardable_and_htlc_handling_failed!(&nodes[1], vec![HTLCDestination::NextHopChannel { node_id: Some(nodes[2].node.get_our_node_id()), channel_id: chan_1.2 }]);
303 let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
304 assert!(htlc_updates.update_add_htlcs.is_empty());
305 assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
306 assert!(htlc_updates.update_fulfill_htlcs.is_empty());
307 assert!(htlc_updates.update_fail_malformed_htlcs.is_empty());
308 check_added_monitors!(nodes[1], 1);
309 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]);
310 commitment_signed_dance!(nodes[0], nodes[1], htlc_updates.commitment_signed, false);
311 expect_payment_failed!(nodes[0], payment_hash, false);
313 // Mine blocks so the payment will have expired.
314 connect_blocks(&nodes[0], 3);
316 // Retry the payment and make sure it errors as expected.
317 if let Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError { err })) = nodes[0].node.retry_payment(&route, payment_id) {
318 assert!(err.contains("not found"));
320 panic!("Unexpected error");
325 fn no_pending_leak_on_initial_send_failure() {
326 // In an earlier version of our payment tracking, we'd have a retry entry even when the initial
327 // HTLC for payment failed to send due to local channel errors (e.g. peer disconnected). In this
328 // case, the user wouldn't have a PaymentId to retry the payment with, but we'd think we have a
329 // pending payment forever and never time it out.
330 // Here we test exactly that - retrying a payment when a peer was disconnected on the first
331 // try, and then check that no pending payment is being tracked.
332 let chanmon_cfgs = create_chanmon_cfgs(2);
333 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
334 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
335 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
337 create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
339 let (route, payment_hash, _, payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], 100_000);
341 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
342 nodes[1].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
344 unwrap_send_err!(nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)),
345 true, APIError::ChannelUnavailable { ref err },
346 assert_eq!(err, "Peer for first hop currently disconnected/pending monitor update!"));
348 assert!(!nodes[0].node.has_pending_payments());
351 fn do_retry_with_no_persist(confirm_before_reload: bool) {
352 // If we send a pending payment and `send_payment` returns success, we should always either
353 // return a payment failure event or a payment success event, and on failure the payment should
356 // In order to do so when the ChannelManager isn't immediately persisted (which is normal - its
357 // always persisted asynchronously), the ChannelManager has to reload some payment data from
358 // ChannelMonitor(s) in some cases. This tests that reloading.
360 // `confirm_before_reload` confirms the channel-closing commitment transaction on-chain prior
361 // to reloading the ChannelManager, increasing test coverage in ChannelMonitor HTLC tracking
362 // which has separate codepaths for "commitment transaction already confirmed" and not.
363 let chanmon_cfgs = create_chanmon_cfgs(3);
364 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
365 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
366 let persister: test_utils::TestPersister;
367 let new_chain_monitor: test_utils::TestChainMonitor;
368 let nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
369 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
371 let chan_id = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features()).2;
372 let (_, _, chan_id_2, _) = create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
374 // Serialize the ChannelManager prior to sending payments
375 let nodes_0_serialized = nodes[0].node.encode();
377 // Send two payments - one which will get to nodes[2] and will be claimed, one which we'll time
379 let (route, payment_hash, payment_preimage, payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], 1_000_000);
380 let (payment_preimage_1, payment_hash_1, _, payment_id_1) = send_along_route(&nodes[0], route.clone(), &[&nodes[1], &nodes[2]], 1_000_000);
381 let payment_id = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
382 check_added_monitors!(nodes[0], 1);
384 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
385 assert_eq!(events.len(), 1);
386 let payment_event = SendEvent::from_event(events.pop().unwrap());
387 assert_eq!(payment_event.node_id, nodes[1].node.get_our_node_id());
389 // We relay the payment to nodes[1] while its disconnected from nodes[2], causing the payment
390 // to be returned immediately to nodes[0], without having nodes[2] fail the inbound payment
391 // which would prevent retry.
392 nodes[1].node.peer_disconnected(&nodes[2].node.get_our_node_id(), false);
393 nodes[2].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
395 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
396 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false, true);
397 // nodes[1] now immediately fails the HTLC as the next-hop channel is disconnected
398 let _ = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
400 reconnect_nodes(&nodes[1], &nodes[2], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
402 let as_commitment_tx = get_local_commitment_txn!(nodes[0], chan_id)[0].clone();
403 if confirm_before_reload {
404 mine_transaction(&nodes[0], &as_commitment_tx);
405 nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
408 // The ChannelMonitor should always be the latest version, as we're required to persist it
409 // during the `commitment_signed_dance!()`.
410 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
411 get_monitor!(nodes[0], chan_id).write(&mut chan_0_monitor_serialized).unwrap();
413 persister = test_utils::TestPersister::new();
414 let keys_manager = &chanmon_cfgs[0].keys_manager;
415 new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), nodes[0].logger, node_cfgs[0].fee_estimator, &persister, keys_manager);
416 nodes[0].chain_monitor = &new_chain_monitor;
417 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
418 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
419 &mut chan_0_monitor_read, keys_manager).unwrap();
420 assert!(chan_0_monitor_read.is_empty());
422 let mut nodes_0_read = &nodes_0_serialized[..];
423 let (_, nodes_0_deserialized_tmp) = {
424 let mut channel_monitors = HashMap::new();
425 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
426 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
427 default_config: test_default_channel_config(),
429 fee_estimator: node_cfgs[0].fee_estimator,
430 chain_monitor: nodes[0].chain_monitor,
431 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
432 logger: nodes[0].logger,
436 nodes_0_deserialized = nodes_0_deserialized_tmp;
437 assert!(nodes_0_read.is_empty());
439 assert!(nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
440 nodes[0].node = &nodes_0_deserialized;
441 check_added_monitors!(nodes[0], 1);
443 // On reload, the ChannelManager should realize it is stale compared to the ChannelMonitor and
444 // force-close the channel.
445 check_closed_event!(nodes[0], 1, ClosureReason::OutdatedChannelManager);
446 assert!(nodes[0].node.list_channels().is_empty());
447 assert!(nodes[0].node.has_pending_payments());
448 let as_broadcasted_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
449 assert_eq!(as_broadcasted_txn.len(), 1);
450 assert_eq!(as_broadcasted_txn[0], as_commitment_tx);
452 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
453 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
454 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
456 // Now nodes[1] should send a channel reestablish, which nodes[0] will respond to with an
457 // error, as the channel has hit the chain.
458 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
459 let bs_reestablish = get_chan_reestablish_msgs!(nodes[1], nodes[0]).pop().unwrap();
460 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &bs_reestablish);
461 let as_err = nodes[0].node.get_and_clear_pending_msg_events();
462 assert_eq!(as_err.len(), 1);
464 MessageSendEvent::HandleError { node_id, action: msgs::ErrorAction::SendErrorMessage { ref msg } } => {
465 assert_eq!(node_id, nodes[1].node.get_our_node_id());
466 nodes[1].node.handle_error(&nodes[0].node.get_our_node_id(), msg);
467 check_closed_event!(nodes[1], 1, ClosureReason::CounterpartyForceClosed { peer_msg: "Failed to find corresponding channel".to_string() });
468 check_added_monitors!(nodes[1], 1);
469 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0).len(), 1);
471 _ => panic!("Unexpected event"),
473 check_closed_broadcast!(nodes[1], false);
475 // Now claim the first payment, which should allow nodes[1] to claim the payment on-chain when
476 // we close in a moment.
477 nodes[2].node.claim_funds(payment_preimage_1);
478 check_added_monitors!(nodes[2], 1);
479 expect_payment_claimed!(nodes[2], payment_hash_1, 1_000_000);
481 let htlc_fulfill_updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
482 nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &htlc_fulfill_updates.update_fulfill_htlcs[0]);
483 check_added_monitors!(nodes[1], 1);
484 commitment_signed_dance!(nodes[1], nodes[2], htlc_fulfill_updates.commitment_signed, false);
486 if confirm_before_reload {
487 let best_block = nodes[0].blocks.lock().unwrap().last().unwrap().clone();
488 nodes[0].node.best_block_updated(&best_block.0.header, best_block.1);
491 // Create a new channel on which to retry the payment before we fail the payment via the
492 // HTLC-Timeout transaction. This avoids ChannelManager timing out the payment due to us
493 // connecting several blocks while creating the channel (implying time has passed).
494 create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
495 assert_eq!(nodes[0].node.list_usable_channels().len(), 1);
497 mine_transaction(&nodes[1], &as_commitment_tx);
498 let bs_htlc_claim_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
499 assert_eq!(bs_htlc_claim_txn.len(), 1);
500 check_spends!(bs_htlc_claim_txn[0], as_commitment_tx);
501 expect_payment_forwarded!(nodes[1], nodes[0], nodes[2], None, false, false);
503 if !confirm_before_reload {
504 mine_transaction(&nodes[0], &as_commitment_tx);
506 mine_transaction(&nodes[0], &bs_htlc_claim_txn[0]);
507 expect_payment_sent!(nodes[0], payment_preimage_1);
508 connect_blocks(&nodes[0], TEST_FINAL_CLTV*4 + 20);
509 let as_htlc_timeout_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
510 assert_eq!(as_htlc_timeout_txn.len(), 2);
511 let (first_htlc_timeout_tx, second_htlc_timeout_tx) = (&as_htlc_timeout_txn[0], &as_htlc_timeout_txn[1]);
512 check_spends!(first_htlc_timeout_tx, as_commitment_tx);
513 check_spends!(second_htlc_timeout_tx, as_commitment_tx);
514 if first_htlc_timeout_tx.input[0].previous_output == bs_htlc_claim_txn[0].input[0].previous_output {
515 confirm_transaction(&nodes[0], &second_htlc_timeout_tx);
517 confirm_transaction(&nodes[0], &first_htlc_timeout_tx);
519 nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
520 expect_payment_failed_conditions(&nodes[0], payment_hash, false, PaymentFailedConditions::new().mpp_parts_remain());
522 // Finally, retry the payment (which was reloaded from the ChannelMonitor when nodes[0] was
523 // reloaded) via a route over the new channel, which work without issue and eventually be
524 // received and claimed at the recipient just like any other payment.
525 let (mut new_route, _, _, _) = get_route_and_payment_hash!(nodes[0], nodes[2], 1_000_000);
527 // Update the fee on the middle hop to ensure PaymentSent events have the correct (retried) fee
528 // and not the original fee. We also update node[1]'s relevant config as
529 // do_claim_payment_along_route expects us to never overpay.
531 let mut channel_state = nodes[1].node.channel_state.lock().unwrap();
532 let mut channel = channel_state.by_id.get_mut(&chan_id_2).unwrap();
533 let mut new_config = channel.config();
534 new_config.forwarding_fee_base_msat += 100_000;
535 channel.update_config(&new_config);
536 new_route.paths[0][0].fee_msat += 100_000;
539 // Force expiration of the channel's previous config.
540 for _ in 0..EXPIRE_PREV_CONFIG_TICKS {
541 nodes[1].node.timer_tick_occurred();
544 assert!(nodes[0].node.retry_payment(&new_route, payment_id_1).is_err()); // Shouldn't be allowed to retry a fulfilled payment
545 nodes[0].node.retry_payment(&new_route, payment_id).unwrap();
546 check_added_monitors!(nodes[0], 1);
547 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
548 assert_eq!(events.len(), 1);
549 pass_along_path(&nodes[0], &[&nodes[1], &nodes[2]], 1_000_000, payment_hash, Some(payment_secret), events.pop().unwrap(), true, None);
550 do_claim_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[2]]], false, payment_preimage);
551 expect_payment_sent!(nodes[0], payment_preimage, Some(new_route.paths[0][0].fee_msat));
555 fn retry_with_no_persist() {
556 do_retry_with_no_persist(true);
557 do_retry_with_no_persist(false);
560 fn do_test_completed_payment_not_retryable_on_reload(use_dust: bool) {
561 // Test that an off-chain completed payment is not retryable on restart. This was previously
562 // broken for dust payments, but we test for both dust and non-dust payments.
564 // `use_dust` switches to using a dust HTLC, which results in the HTLC not having an on-chain
566 let chanmon_cfgs = create_chanmon_cfgs(3);
567 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
569 let mut manually_accept_config = test_default_channel_config();
570 manually_accept_config.manually_accept_inbound_channels = true;
572 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, Some(manually_accept_config), None]);
574 let first_persister: test_utils::TestPersister;
575 let first_new_chain_monitor: test_utils::TestChainMonitor;
576 let first_nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
577 let second_persister: test_utils::TestPersister;
578 let second_new_chain_monitor: test_utils::TestChainMonitor;
579 let second_nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
580 let third_persister: test_utils::TestPersister;
581 let third_new_chain_monitor: test_utils::TestChainMonitor;
582 let third_nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
584 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
586 // Because we set nodes[1] to manually accept channels, just open a 0-conf channel.
587 let (funding_tx, chan_id) = open_zero_conf_channel(&nodes[0], &nodes[1], None);
588 confirm_transaction(&nodes[0], &funding_tx);
589 confirm_transaction(&nodes[1], &funding_tx);
590 // Ignore the announcement_signatures messages
591 nodes[0].node.get_and_clear_pending_msg_events();
592 nodes[1].node.get_and_clear_pending_msg_events();
593 let chan_id_2 = create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features()).2;
595 // Serialize the ChannelManager prior to sending payments
596 let mut nodes_0_serialized = nodes[0].node.encode();
598 let route = get_route_and_payment_hash!(nodes[0], nodes[2], if use_dust { 1_000 } else { 1_000_000 }).0;
599 let (payment_preimage, payment_hash, payment_secret, payment_id) = send_along_route(&nodes[0], route, &[&nodes[1], &nodes[2]], if use_dust { 1_000 } else { 1_000_000 });
601 // The ChannelMonitor should always be the latest version, as we're required to persist it
602 // during the `commitment_signed_dance!()`.
603 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
604 get_monitor!(nodes[0], chan_id).write(&mut chan_0_monitor_serialized).unwrap();
606 let mut chan_1_monitor_serialized = test_utils::TestVecWriter(Vec::new());
608 macro_rules! reload_node {
609 ($chain_monitor: ident, $chan_manager: ident, $persister: ident) => { {
610 $persister = test_utils::TestPersister::new();
611 let keys_manager = &chanmon_cfgs[0].keys_manager;
612 $chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), nodes[0].logger, node_cfgs[0].fee_estimator, &$persister, keys_manager);
613 nodes[0].chain_monitor = &$chain_monitor;
614 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
615 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
616 &mut chan_0_monitor_read, keys_manager).unwrap();
617 assert!(chan_0_monitor_read.is_empty());
619 let mut chan_1_monitor = None;
620 let mut channel_monitors = HashMap::new();
621 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
623 if !chan_1_monitor_serialized.0.is_empty() {
624 let mut chan_1_monitor_read = &chan_1_monitor_serialized.0[..];
625 chan_1_monitor = Some(<(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
626 &mut chan_1_monitor_read, keys_manager).unwrap().1);
627 assert!(chan_1_monitor_read.is_empty());
628 channel_monitors.insert(chan_1_monitor.as_ref().unwrap().get_funding_txo().0, chan_1_monitor.as_mut().unwrap());
631 let mut nodes_0_read = &nodes_0_serialized[..];
632 let (_, nodes_0_deserialized_tmp) = {
633 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
634 default_config: test_default_channel_config(),
636 fee_estimator: node_cfgs[0].fee_estimator,
637 chain_monitor: nodes[0].chain_monitor,
638 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
639 logger: nodes[0].logger,
643 $chan_manager = nodes_0_deserialized_tmp;
644 assert!(nodes_0_read.is_empty());
646 assert!(nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
647 if !chan_1_monitor_serialized.0.is_empty() {
648 let funding_txo = chan_1_monitor.as_ref().unwrap().get_funding_txo().0;
649 assert!(nodes[0].chain_monitor.watch_channel(funding_txo, chan_1_monitor.unwrap()).is_ok());
651 nodes[0].node = &$chan_manager;
652 check_added_monitors!(nodes[0], if !chan_1_monitor_serialized.0.is_empty() { 2 } else { 1 });
654 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
658 reload_node!(first_new_chain_monitor, first_nodes_0_deserialized, first_persister);
660 // On reload, the ChannelManager should realize it is stale compared to the ChannelMonitor and
661 // force-close the channel.
662 check_closed_event!(nodes[0], 1, ClosureReason::OutdatedChannelManager);
663 assert!(nodes[0].node.list_channels().is_empty());
664 assert!(nodes[0].node.has_pending_payments());
665 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0).len(), 1);
667 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
668 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
670 // Now nodes[1] should send a channel reestablish, which nodes[0] will respond to with an
671 // error, as the channel has hit the chain.
672 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
673 let bs_reestablish = get_chan_reestablish_msgs!(nodes[1], nodes[0]).pop().unwrap();
674 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &bs_reestablish);
675 let as_err = nodes[0].node.get_and_clear_pending_msg_events();
676 assert_eq!(as_err.len(), 1);
677 let bs_commitment_tx;
679 MessageSendEvent::HandleError { node_id, action: msgs::ErrorAction::SendErrorMessage { ref msg } } => {
680 assert_eq!(node_id, nodes[1].node.get_our_node_id());
681 nodes[1].node.handle_error(&nodes[0].node.get_our_node_id(), msg);
682 check_closed_event!(nodes[1], 1, ClosureReason::CounterpartyForceClosed { peer_msg: "Failed to find corresponding channel".to_string() });
683 check_added_monitors!(nodes[1], 1);
684 bs_commitment_tx = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
686 _ => panic!("Unexpected event"),
688 check_closed_broadcast!(nodes[1], false);
690 // Now fail back the payment from nodes[2] to nodes[1]. This doesn't really matter as the
691 // previous hop channel is already on-chain, but it makes nodes[2] willing to see additional
692 // incoming HTLCs with the same payment hash later.
693 nodes[2].node.fail_htlc_backwards(&payment_hash);
694 expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[2], [HTLCDestination::FailedPayment { payment_hash }]);
695 check_added_monitors!(nodes[2], 1);
697 let htlc_fulfill_updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
698 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &htlc_fulfill_updates.update_fail_htlcs[0]);
699 commitment_signed_dance!(nodes[1], nodes[2], htlc_fulfill_updates.commitment_signed, false);
700 expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[1],
701 [HTLCDestination::NextHopChannel { node_id: Some(nodes[2].node.get_our_node_id()), channel_id: chan_id_2 }]);
703 // Connect the HTLC-Timeout transaction, timing out the HTLC on both nodes (but not confirming
704 // the HTLC-Timeout transaction beyond 1 conf). For dust HTLCs, the HTLC is considered resolved
705 // after the commitment transaction, so always connect the commitment transaction.
706 mine_transaction(&nodes[0], &bs_commitment_tx[0]);
707 mine_transaction(&nodes[1], &bs_commitment_tx[0]);
709 connect_blocks(&nodes[0], TEST_FINAL_CLTV - 1 + (MIN_CLTV_EXPIRY_DELTA as u32));
710 connect_blocks(&nodes[1], TEST_FINAL_CLTV - 1 + (MIN_CLTV_EXPIRY_DELTA as u32));
711 let as_htlc_timeout = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
712 check_spends!(as_htlc_timeout[0], bs_commitment_tx[0]);
713 assert_eq!(as_htlc_timeout.len(), 1);
715 mine_transaction(&nodes[0], &as_htlc_timeout[0]);
716 // nodes[0] may rebroadcast (or RBF-bump) its HTLC-Timeout, so wipe the announced set.
717 nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
718 mine_transaction(&nodes[1], &as_htlc_timeout[0]);
721 // Create a new channel on which to retry the payment before we fail the payment via the
722 // HTLC-Timeout transaction. This avoids ChannelManager timing out the payment due to us
723 // connecting several blocks while creating the channel (implying time has passed).
724 // We do this with a zero-conf channel to avoid connecting blocks as a side-effect.
725 let (_, chan_id_3) = open_zero_conf_channel(&nodes[0], &nodes[1], None);
726 assert_eq!(nodes[0].node.list_usable_channels().len(), 1);
728 // If we attempt to retry prior to the HTLC-Timeout (or commitment transaction, for dust HTLCs)
729 // confirming, we will fail as it's considered still-pending...
730 let (new_route, _, _, _) = get_route_and_payment_hash!(nodes[0], nodes[2], if use_dust { 1_000 } else { 1_000_000 });
731 assert!(nodes[0].node.retry_payment(&new_route, payment_id).is_err());
732 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
734 // After ANTI_REORG_DELAY confirmations, the HTLC should be failed and we can try the payment
735 // again. We serialize the node first as we'll then test retrying the HTLC after a restart
736 // (which should also still work).
737 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
738 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
739 // We set mpp_parts_remain to avoid having abandon_payment called
740 expect_payment_failed_conditions(&nodes[0], payment_hash, false, PaymentFailedConditions::new().mpp_parts_remain());
742 chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
743 get_monitor!(nodes[0], chan_id).write(&mut chan_0_monitor_serialized).unwrap();
744 chan_1_monitor_serialized = test_utils::TestVecWriter(Vec::new());
745 get_monitor!(nodes[0], chan_id_3).write(&mut chan_1_monitor_serialized).unwrap();
746 nodes_0_serialized = nodes[0].node.encode();
748 assert!(nodes[0].node.retry_payment(&new_route, payment_id).is_ok());
749 assert!(!nodes[0].node.get_and_clear_pending_msg_events().is_empty());
751 reload_node!(second_new_chain_monitor, second_nodes_0_deserialized, second_persister);
752 reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
754 // Now resend the payment, delivering the HTLC and actually claiming it this time. This ensures
755 // the payment is not (spuriously) listed as still pending.
756 assert!(nodes[0].node.retry_payment(&new_route, payment_id).is_ok());
757 check_added_monitors!(nodes[0], 1);
758 pass_along_route(&nodes[0], &[&[&nodes[1], &nodes[2]]], if use_dust { 1_000 } else { 1_000_000 }, payment_hash, payment_secret);
759 claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage);
761 assert!(nodes[0].node.retry_payment(&new_route, payment_id).is_err());
762 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
764 chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
765 get_monitor!(nodes[0], chan_id).write(&mut chan_0_monitor_serialized).unwrap();
766 chan_1_monitor_serialized = test_utils::TestVecWriter(Vec::new());
767 get_monitor!(nodes[0], chan_id_3).write(&mut chan_1_monitor_serialized).unwrap();
768 nodes_0_serialized = nodes[0].node.encode();
770 // Ensure that after reload we cannot retry the payment.
771 reload_node!(third_new_chain_monitor, third_nodes_0_deserialized, third_persister);
772 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
774 assert!(nodes[0].node.retry_payment(&new_route, payment_id).is_err());
775 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
779 fn test_completed_payment_not_retryable_on_reload() {
780 do_test_completed_payment_not_retryable_on_reload(true);
781 do_test_completed_payment_not_retryable_on_reload(false);
785 fn do_test_dup_htlc_onchain_fails_on_reload(persist_manager_post_event: bool, confirm_commitment_tx: bool, payment_timeout: bool) {
786 // When a Channel is closed, any outbound HTLCs which were relayed through it are simply
787 // dropped when the Channel is. From there, the ChannelManager relies on the ChannelMonitor
788 // having a copy of the relevant fail-/claim-back data and processes the HTLC fail/claim when
789 // the ChannelMonitor tells it to.
791 // If, due to an on-chain event, an HTLC is failed/claimed, we should avoid providing the
792 // ChannelManager the HTLC event until after the monitor is re-persisted. This should prevent a
793 // duplicate HTLC fail/claim (e.g. via a PaymentPathFailed event).
794 let chanmon_cfgs = create_chanmon_cfgs(2);
795 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
796 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
797 let persister: test_utils::TestPersister;
798 let new_chain_monitor: test_utils::TestChainMonitor;
799 let nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
800 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
802 let (_, _, chan_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
804 // Route a payment, but force-close the channel before the HTLC fulfill message arrives at
806 let (payment_preimage, payment_hash, _) = route_payment(&nodes[0], &[&nodes[1]], 10_000_000);
807 nodes[0].node.force_close_broadcasting_latest_txn(&nodes[0].node.list_channels()[0].channel_id, &nodes[1].node.get_our_node_id()).unwrap();
808 check_closed_broadcast!(nodes[0], true);
809 check_added_monitors!(nodes[0], 1);
810 check_closed_event!(nodes[0], 1, ClosureReason::HolderForceClosed);
812 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
813 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
815 // Connect blocks until the CLTV timeout is up so that we get an HTLC-Timeout transaction
816 connect_blocks(&nodes[0], TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + 1);
817 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
818 assert_eq!(node_txn.len(), 3);
819 assert_eq!(node_txn[0], node_txn[1]);
820 check_spends!(node_txn[1], funding_tx);
821 check_spends!(node_txn[2], node_txn[1]);
822 let timeout_txn = vec![node_txn[2].clone()];
824 nodes[1].node.claim_funds(payment_preimage);
825 check_added_monitors!(nodes[1], 1);
826 expect_payment_claimed!(nodes[1], payment_hash, 10_000_000);
828 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: TxMerkleNode::all_zeros(), time: 42, bits: 42, nonce: 42 };
829 connect_block(&nodes[1], &Block { header, txdata: vec![node_txn[1].clone()]});
830 check_closed_broadcast!(nodes[1], true);
831 check_added_monitors!(nodes[1], 1);
832 check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed);
833 let claim_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
834 assert_eq!(claim_txn.len(), 3);
835 check_spends!(claim_txn[0], node_txn[1]);
836 check_spends!(claim_txn[1], funding_tx);
837 check_spends!(claim_txn[2], claim_txn[1]);
839 header.prev_blockhash = nodes[0].best_block_hash();
840 connect_block(&nodes[0], &Block { header, txdata: vec![node_txn[1].clone()]});
842 if confirm_commitment_tx {
843 connect_blocks(&nodes[0], BREAKDOWN_TIMEOUT as u32 - 1);
846 header.prev_blockhash = nodes[0].best_block_hash();
847 let claim_block = Block { header, txdata: if payment_timeout { timeout_txn } else { vec![claim_txn[0].clone()] } };
850 assert!(confirm_commitment_tx); // Otherwise we're spending below our CSV!
851 connect_block(&nodes[0], &claim_block);
852 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 2);
855 // Now connect the HTLC claim transaction with the ChainMonitor-generated ChannelMonitor update
856 // returning TemporaryFailure. This should cause the claim event to never make its way to the
858 chanmon_cfgs[0].persister.chain_sync_monitor_persistences.lock().unwrap().clear();
859 chanmon_cfgs[0].persister.set_update_ret(Err(ChannelMonitorUpdateErr::TemporaryFailure));
862 connect_blocks(&nodes[0], 1);
864 connect_block(&nodes[0], &claim_block);
867 let funding_txo = OutPoint { txid: funding_tx.txid(), index: 0 };
868 let mon_updates: Vec<_> = chanmon_cfgs[0].persister.chain_sync_monitor_persistences.lock().unwrap()
869 .get_mut(&funding_txo).unwrap().drain().collect();
870 // If we are using chain::Confirm instead of chain::Listen, we will get the same update twice
871 assert!(mon_updates.len() == 1 || mon_updates.len() == 2);
872 assert!(nodes[0].chain_monitor.release_pending_monitor_events().is_empty());
873 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
875 // If we persist the ChannelManager here, we should get the PaymentSent event after
877 let mut chan_manager_serialized = test_utils::TestVecWriter(Vec::new());
878 if !persist_manager_post_event {
879 nodes[0].node.write(&mut chan_manager_serialized).unwrap();
882 // Now persist the ChannelMonitor and inform the ChainMonitor that we're done, generating the
883 // payment sent event.
884 chanmon_cfgs[0].persister.set_update_ret(Ok(()));
885 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
886 get_monitor!(nodes[0], chan_id).write(&mut chan_0_monitor_serialized).unwrap();
887 for update in mon_updates {
888 nodes[0].chain_monitor.chain_monitor.channel_monitor_updated(funding_txo, update).unwrap();
891 expect_payment_failed!(nodes[0], payment_hash, false);
893 expect_payment_sent!(nodes[0], payment_preimage);
896 // If we persist the ChannelManager after we get the PaymentSent event, we shouldn't get it
898 if persist_manager_post_event {
899 nodes[0].node.write(&mut chan_manager_serialized).unwrap();
902 // Now reload nodes[0]...
903 persister = test_utils::TestPersister::new();
904 let keys_manager = &chanmon_cfgs[0].keys_manager;
905 new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), nodes[0].logger, node_cfgs[0].fee_estimator, &persister, keys_manager);
906 nodes[0].chain_monitor = &new_chain_monitor;
907 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
908 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
909 &mut chan_0_monitor_read, keys_manager).unwrap();
910 assert!(chan_0_monitor_read.is_empty());
912 let (_, nodes_0_deserialized_tmp) = {
913 let mut channel_monitors = HashMap::new();
914 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
915 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>
916 ::read(&mut io::Cursor::new(&chan_manager_serialized.0[..]), ChannelManagerReadArgs {
917 default_config: Default::default(),
919 fee_estimator: node_cfgs[0].fee_estimator,
920 chain_monitor: nodes[0].chain_monitor,
921 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
922 logger: nodes[0].logger,
926 nodes_0_deserialized = nodes_0_deserialized_tmp;
928 assert!(nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
929 check_added_monitors!(nodes[0], 1);
930 nodes[0].node = &nodes_0_deserialized;
932 if persist_manager_post_event {
933 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
934 } else if payment_timeout {
935 expect_payment_failed!(nodes[0], payment_hash, false);
937 expect_payment_sent!(nodes[0], payment_preimage);
940 // Note that if we re-connect the block which exposed nodes[0] to the payment preimage (but
941 // which the current ChannelMonitor has not seen), the ChannelManager's de-duplication of
942 // payment events should kick in, leaving us with no pending events here.
943 let height = nodes[0].blocks.lock().unwrap().len() as u32 - 1;
944 nodes[0].chain_monitor.chain_monitor.block_connected(&claim_block, height);
945 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
949 fn test_dup_htlc_onchain_fails_on_reload() {
950 do_test_dup_htlc_onchain_fails_on_reload(true, true, true);
951 do_test_dup_htlc_onchain_fails_on_reload(true, true, false);
952 do_test_dup_htlc_onchain_fails_on_reload(true, false, false);
953 do_test_dup_htlc_onchain_fails_on_reload(false, true, true);
954 do_test_dup_htlc_onchain_fails_on_reload(false, true, false);
955 do_test_dup_htlc_onchain_fails_on_reload(false, false, false);
959 fn test_fulfill_restart_failure() {
960 // When we receive an update_fulfill_htlc message, we immediately consider the HTLC fully
961 // fulfilled. At this point, the peer can reconnect and decide to either fulfill the HTLC
962 // again, or fail it, giving us free money.
964 // Of course probably they won't fail it and give us free money, but because we have code to
965 // handle it, we should test the logic for it anyway. We do that here.
966 let chanmon_cfgs = create_chanmon_cfgs(2);
967 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
968 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
969 let persister: test_utils::TestPersister;
970 let new_chain_monitor: test_utils::TestChainMonitor;
971 let nodes_1_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
972 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
974 let chan_id = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features()).2;
975 let (payment_preimage, payment_hash, _) = route_payment(&nodes[0], &[&nodes[1]], 100_000);
977 // The simplest way to get a failure after a fulfill is to reload nodes[1] from a state
978 // pre-fulfill, which we do by serializing it here.
979 let mut chan_manager_serialized = test_utils::TestVecWriter(Vec::new());
980 nodes[1].node.write(&mut chan_manager_serialized).unwrap();
981 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
982 get_monitor!(nodes[1], chan_id).write(&mut chan_0_monitor_serialized).unwrap();
984 nodes[1].node.claim_funds(payment_preimage);
985 check_added_monitors!(nodes[1], 1);
986 expect_payment_claimed!(nodes[1], payment_hash, 100_000);
988 let htlc_fulfill_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
989 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &htlc_fulfill_updates.update_fulfill_htlcs[0]);
990 expect_payment_sent_without_paths!(nodes[0], payment_preimage);
992 // Now reload nodes[1]...
993 persister = test_utils::TestPersister::new();
994 let keys_manager = &chanmon_cfgs[1].keys_manager;
995 new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[1].chain_source), nodes[1].tx_broadcaster.clone(), nodes[1].logger, node_cfgs[1].fee_estimator, &persister, keys_manager);
996 nodes[1].chain_monitor = &new_chain_monitor;
997 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
998 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
999 &mut chan_0_monitor_read, keys_manager).unwrap();
1000 assert!(chan_0_monitor_read.is_empty());
1002 let (_, nodes_1_deserialized_tmp) = {
1003 let mut channel_monitors = HashMap::new();
1004 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
1005 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>
1006 ::read(&mut io::Cursor::new(&chan_manager_serialized.0[..]), ChannelManagerReadArgs {
1007 default_config: Default::default(),
1009 fee_estimator: node_cfgs[1].fee_estimator,
1010 chain_monitor: nodes[1].chain_monitor,
1011 tx_broadcaster: nodes[1].tx_broadcaster.clone(),
1012 logger: nodes[1].logger,
1016 nodes_1_deserialized = nodes_1_deserialized_tmp;
1018 assert!(nodes[1].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
1019 check_added_monitors!(nodes[1], 1);
1020 nodes[1].node = &nodes_1_deserialized;
1022 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
1023 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
1025 nodes[1].node.fail_htlc_backwards(&payment_hash);
1026 expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[1], vec![HTLCDestination::FailedPayment { payment_hash }]);
1027 check_added_monitors!(nodes[1], 1);
1028 let htlc_fail_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1029 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_fail_updates.update_fail_htlcs[0]);
1030 commitment_signed_dance!(nodes[0], nodes[1], htlc_fail_updates.commitment_signed, false);
1031 // nodes[0] shouldn't generate any events here, while it just got a payment failure completion
1032 // it had already considered the payment fulfilled, and now they just got free money.
1033 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
1037 fn get_ldk_payment_preimage() {
1038 // Ensure that `ChannelManager::get_payment_preimage` can successfully be used to claim a payment.
1039 let chanmon_cfgs = create_chanmon_cfgs(2);
1040 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1041 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1042 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1043 create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
1045 let amt_msat = 60_000;
1046 let expiry_secs = 60 * 60;
1047 let (payment_hash, payment_secret) = nodes[1].node.create_inbound_payment(Some(amt_msat), expiry_secs).unwrap();
1049 let payment_params = PaymentParameters::from_node_id(nodes[1].node.get_our_node_id())
1050 .with_features(channelmanager::provided_invoice_features());
1051 let scorer = test_utils::TestScorer::with_penalty(0);
1052 let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
1053 let random_seed_bytes = keys_manager.get_secure_random_bytes();
1054 let route = get_route(
1055 &nodes[0].node.get_our_node_id(), &payment_params, &nodes[0].network_graph.read_only(),
1056 Some(&nodes[0].node.list_usable_channels().iter().collect::<Vec<_>>()),
1057 amt_msat, TEST_FINAL_CLTV, nodes[0].logger, &scorer, &random_seed_bytes).unwrap();
1058 let _payment_id = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
1059 check_added_monitors!(nodes[0], 1);
1061 // Make sure to use `get_payment_preimage`
1062 let payment_preimage = nodes[1].node.get_payment_preimage(payment_hash, payment_secret).unwrap();
1063 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1064 assert_eq!(events.len(), 1);
1065 pass_along_path(&nodes[0], &[&nodes[1]], amt_msat, payment_hash, Some(payment_secret), events.pop().unwrap(), true, Some(payment_preimage));
1066 claim_payment_along_route(&nodes[0], &[&[&nodes[1]]], false, payment_preimage);
1070 fn sent_probe_is_probe_of_sending_node() {
1071 let chanmon_cfgs = create_chanmon_cfgs(3);
1072 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1073 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None, None]);
1074 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1076 create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
1077 create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
1079 // First check we refuse to build a single-hop probe
1080 let (route, _, _, _) = get_route_and_payment_hash!(&nodes[0], nodes[1], 100_000);
1081 assert!(nodes[0].node.send_probe(route.paths[0].clone()).is_err());
1083 // Then build an actual two-hop probing path
1084 let (route, _, _, _) = get_route_and_payment_hash!(&nodes[0], nodes[2], 100_000);
1086 match nodes[0].node.send_probe(route.paths[0].clone()) {
1087 Ok((payment_hash, payment_id)) => {
1088 assert!(nodes[0].node.payment_is_probe(&payment_hash, &payment_id));
1089 assert!(!nodes[1].node.payment_is_probe(&payment_hash, &payment_id));
1090 assert!(!nodes[2].node.payment_is_probe(&payment_hash, &payment_id));
1095 get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
1096 check_added_monitors!(nodes[0], 1);
1100 fn successful_probe_yields_event() {
1101 let chanmon_cfgs = create_chanmon_cfgs(3);
1102 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1103 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None, None]);
1104 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1106 create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
1107 create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
1109 let (route, _, _, _) = get_route_and_payment_hash!(&nodes[0], nodes[2], 100_000);
1111 let (payment_hash, payment_id) = nodes[0].node.send_probe(route.paths[0].clone()).unwrap();
1113 // node[0] -- update_add_htlcs -> node[1]
1114 check_added_monitors!(nodes[0], 1);
1115 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
1116 let probe_event = SendEvent::from_commitment_update(nodes[1].node.get_our_node_id(), updates);
1117 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &probe_event.msgs[0]);
1118 check_added_monitors!(nodes[1], 0);
1119 commitment_signed_dance!(nodes[1], nodes[0], probe_event.commitment_msg, false);
1120 expect_pending_htlcs_forwardable!(nodes[1]);
1122 // node[1] -- update_add_htlcs -> node[2]
1123 check_added_monitors!(nodes[1], 1);
1124 let updates = get_htlc_update_msgs!(nodes[1], nodes[2].node.get_our_node_id());
1125 let probe_event = SendEvent::from_commitment_update(nodes[1].node.get_our_node_id(), updates);
1126 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &probe_event.msgs[0]);
1127 check_added_monitors!(nodes[2], 0);
1128 commitment_signed_dance!(nodes[2], nodes[1], probe_event.commitment_msg, true, true);
1130 // node[1] <- update_fail_htlcs -- node[2]
1131 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
1132 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
1133 check_added_monitors!(nodes[1], 0);
1134 commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, true);
1136 // node[0] <- update_fail_htlcs -- node[1]
1137 let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1138 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
1139 check_added_monitors!(nodes[0], 0);
1140 commitment_signed_dance!(nodes[0], nodes[1], updates.commitment_signed, false);
1142 let mut events = nodes[0].node.get_and_clear_pending_events();
1143 assert_eq!(events.len(), 1);
1144 match events.drain(..).next().unwrap() {
1145 crate::util::events::Event::ProbeSuccessful { payment_id: ev_pid, payment_hash: ev_ph, .. } => {
1146 assert_eq!(payment_id, ev_pid);
1147 assert_eq!(payment_hash, ev_ph);
1154 fn failed_probe_yields_event() {
1155 let chanmon_cfgs = create_chanmon_cfgs(3);
1156 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1157 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None, None]);
1158 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1160 create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
1161 create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 90000000, channelmanager::provided_init_features(), channelmanager::provided_init_features());
1163 let payment_params = PaymentParameters::from_node_id(nodes[2].node.get_our_node_id());
1165 let (route, _, _, _) = get_route_and_payment_hash!(&nodes[0], nodes[2], &payment_params, 9_998_000, 42);
1167 let (payment_hash, payment_id) = nodes[0].node.send_probe(route.paths[0].clone()).unwrap();
1169 // node[0] -- update_add_htlcs -> node[1]
1170 check_added_monitors!(nodes[0], 1);
1171 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
1172 let probe_event = SendEvent::from_commitment_update(nodes[1].node.get_our_node_id(), updates);
1173 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &probe_event.msgs[0]);
1174 check_added_monitors!(nodes[1], 0);
1175 commitment_signed_dance!(nodes[1], nodes[0], probe_event.commitment_msg, false);
1176 expect_pending_htlcs_forwardable!(nodes[1]);
1178 // node[0] <- update_fail_htlcs -- node[1]
1179 check_added_monitors!(nodes[1], 1);
1180 let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1181 // Skip the PendingHTLCsForwardable event
1182 let _events = nodes[1].node.get_and_clear_pending_events();
1183 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
1184 check_added_monitors!(nodes[0], 0);
1185 commitment_signed_dance!(nodes[0], nodes[1], updates.commitment_signed, false);
1187 let mut events = nodes[0].node.get_and_clear_pending_events();
1188 assert_eq!(events.len(), 1);
1189 match events.drain(..).next().unwrap() {
1190 crate::util::events::Event::ProbeFailed { payment_id: ev_pid, payment_hash: ev_ph, .. } => {
1191 assert_eq!(payment_id, ev_pid);
1192 assert_eq!(payment_hash, ev_ph);
1199 fn onchain_failed_probe_yields_event() {
1200 // Tests that an attempt to probe over a channel that is eventaully closed results in a failure
1202 let chanmon_cfgs = create_chanmon_cfgs(3);
1203 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1204 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1205 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1207 let chan_id = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features()).2;
1208 create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
1210 let payment_params = PaymentParameters::from_node_id(nodes[2].node.get_our_node_id());
1212 // Send a dust HTLC, which will be treated as if it timed out once the channel hits the chain.
1213 let (route, _, _, _) = get_route_and_payment_hash!(&nodes[0], nodes[2], &payment_params, 1_000, 42);
1214 let (payment_hash, payment_id) = nodes[0].node.send_probe(route.paths[0].clone()).unwrap();
1216 // node[0] -- update_add_htlcs -> node[1]
1217 check_added_monitors!(nodes[0], 1);
1218 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
1219 let probe_event = SendEvent::from_commitment_update(nodes[1].node.get_our_node_id(), updates);
1220 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &probe_event.msgs[0]);
1221 check_added_monitors!(nodes[1], 0);
1222 commitment_signed_dance!(nodes[1], nodes[0], probe_event.commitment_msg, false);
1223 expect_pending_htlcs_forwardable!(nodes[1]);
1225 check_added_monitors!(nodes[1], 1);
1226 let _ = get_htlc_update_msgs!(nodes[1], nodes[2].node.get_our_node_id());
1228 // Don't bother forwarding the HTLC onwards and just confirm the force-close transaction on
1229 // Node A, which after 6 confirmations should result in a probe failure event.
1230 let bs_txn = get_local_commitment_txn!(nodes[1], chan_id);
1231 confirm_transaction(&nodes[0], &bs_txn[0]);
1232 check_closed_broadcast!(&nodes[0], true);
1233 check_added_monitors!(nodes[0], 1);
1235 let mut events = nodes[0].node.get_and_clear_pending_events();
1236 assert_eq!(events.len(), 2);
1237 let mut found_probe_failed = false;
1238 for event in events.drain(..) {
1240 Event::ProbeFailed { payment_id: ev_pid, payment_hash: ev_ph, .. } => {
1241 assert_eq!(payment_id, ev_pid);
1242 assert_eq!(payment_hash, ev_ph);
1243 found_probe_failed = true;
1245 Event::ChannelClosed { .. } => {},
1249 assert!(found_probe_failed);