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 //! Functional tests which test the correct handling of ChannelMonitorUpdateErr returns from
12 //! There are a bunch of these as their handling is relatively error-prone so they are split out
13 //! here. See also the chanmon_fail_consistency fuzz test.
15 use bitcoin::blockdata::block::{Block, BlockHeader};
16 use bitcoin::blockdata::constants::genesis_block;
17 use bitcoin::hash_types::BlockHash;
18 use bitcoin::network::constants::Network;
19 use chain::channelmonitor::{ChannelMonitor, ChannelMonitorUpdateErr};
20 use chain::transaction::OutPoint;
23 use ln::{PaymentPreimage, PaymentHash};
24 use ln::channelmanager::{ChannelManager, ChannelManagerReadArgs, RAACommitmentOrder, PaymentSendFailure};
25 use ln::features::{InitFeatures, InvoiceFeatures};
27 use ln::msgs::{ChannelMessageHandler, ErrorAction, RoutingMessageHandler};
28 use routing::router::get_route;
29 use util::config::UserConfig;
30 use util::enforcing_trait_impls::EnforcingSigner;
31 use util::events::{Event, MessageSendEvent, MessageSendEventsProvider, PaymentPurpose};
32 use util::errors::APIError;
33 use util::ser::{ReadableArgs, Writeable};
34 use util::test_utils::TestBroadcaster;
36 use bitcoin::hashes::sha256::Hash as Sha256;
37 use bitcoin::hashes::Hash;
39 use ln::functional_test_utils::*;
45 use sync::{Arc, Mutex};
47 // If persister_fail is true, we have the persister return a PermanentFailure
48 // instead of the higher-level ChainMonitor.
49 fn do_test_simple_monitor_permanent_update_fail(persister_fail: bool) {
50 // Test that we handle a simple permanent monitor update failure
51 let mut chanmon_cfgs = create_chanmon_cfgs(2);
52 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
53 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
54 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
55 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
56 let logger = test_utils::TestLogger::new();
58 let (_, payment_hash_1, payment_secret_1) = get_payment_preimage_hash!(&nodes[1]);
60 match persister_fail {
61 true => chanmon_cfgs[0].persister.set_update_ret(Err(ChannelMonitorUpdateErr::PermanentFailure)),
62 false => *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::PermanentFailure))
64 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
65 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
66 unwrap_send_err!(nodes[0].node.send_payment(&route, payment_hash_1, &Some(payment_secret_1)), true, APIError::ChannelUnavailable {..}, {});
67 check_added_monitors!(nodes[0], 2);
69 let events_1 = nodes[0].node.get_and_clear_pending_msg_events();
70 assert_eq!(events_1.len(), 2);
72 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
73 _ => panic!("Unexpected event"),
76 MessageSendEvent::HandleError { node_id, .. } => assert_eq!(node_id, nodes[1].node.get_our_node_id()),
77 _ => panic!("Unexpected event"),
80 // TODO: Once we hit the chain with the failure transaction we should check that we get a
81 // PaymentFailed event
83 assert_eq!(nodes[0].node.list_channels().len(), 0);
87 fn test_monitor_and_persister_update_fail() {
88 // Test that if both updating the `ChannelMonitor` and persisting the updated
89 // `ChannelMonitor` fail, then the failure from updating the `ChannelMonitor`
90 // one that gets returned.
91 let chanmon_cfgs = create_chanmon_cfgs(2);
92 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
93 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
94 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
96 // Create some initial channel
97 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
98 let outpoint = OutPoint { txid: chan.3.txid(), index: 0 };
100 // Rebalance the network to generate htlc in the two directions
101 send_payment(&nodes[0], &vec!(&nodes[1])[..], 10_000_000);
103 // Route an HTLC from node 0 to node 1 (but don't settle)
104 let preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9_000_000).0;
106 // Make a copy of the ChainMonitor so we can capture the error it returns on a
107 // bogus update. Note that if instead we updated the nodes[0]'s ChainMonitor
108 // directly, the node would fail to be `Drop`'d at the end because its
109 // ChannelManager and ChainMonitor would be out of sync.
110 let chain_source = test_utils::TestChainSource::new(Network::Testnet);
111 let logger = test_utils::TestLogger::with_id(format!("node {}", 0));
112 let persister = test_utils::TestPersister::new();
113 let tx_broadcaster = TestBroadcaster {
114 txn_broadcasted: Mutex::new(Vec::new()),
115 // Because we will connect a block at height 200 below, we need the TestBroadcaster to know
116 // that we are at height 200 so that it doesn't think we're violating the time lock
117 // requirements of transactions broadcasted at that point.
118 blocks: Arc::new(Mutex::new(vec![(genesis_block(Network::Testnet).header, 200); 200])),
121 let monitors = nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap();
122 let monitor = monitors.get(&outpoint).unwrap();
123 let mut w = test_utils::TestVecWriter(Vec::new());
124 monitor.write(&mut w).unwrap();
125 let new_monitor = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
126 &mut io::Cursor::new(&w.0), &test_utils::OnlyReadsKeysInterface {}).unwrap().1;
127 assert!(new_monitor == *monitor);
128 let chain_mon = test_utils::TestChainMonitor::new(Some(&chain_source), &tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator, &persister, &node_cfgs[0].keys_manager);
129 assert!(chain_mon.watch_channel(outpoint, new_monitor).is_ok());
132 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
133 chain_mon.chain_monitor.block_connected(&Block { header, txdata: vec![] }, 200);
135 // Set the persister's return value to be a TemporaryFailure.
136 persister.set_update_ret(Err(ChannelMonitorUpdateErr::TemporaryFailure));
138 // Try to update ChannelMonitor
139 assert!(nodes[1].node.claim_funds(preimage));
140 check_added_monitors!(nodes[1], 1);
141 let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
142 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
143 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
144 if let Some(ref mut channel) = nodes[0].node.channel_state.lock().unwrap().by_id.get_mut(&chan.2) {
145 if let Ok((_, _, update)) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].logger) {
146 // Check that even though the persister is returning a TemporaryFailure,
147 // because the update is bogus, ultimately the error that's returned
148 // should be a PermanentFailure.
149 if let Err(ChannelMonitorUpdateErr::PermanentFailure) = chain_mon.chain_monitor.update_channel(outpoint, update.clone()) {} else { panic!("Expected monitor error to be permanent"); }
150 logger.assert_log_contains("lightning::chain::chainmonitor".to_string(), "Failed to persist channel monitor update: TemporaryFailure".to_string(), 1);
151 if let Ok(_) = nodes[0].chain_monitor.update_channel(outpoint, update) {} else { assert!(false); }
152 } else { assert!(false); }
153 } else { assert!(false); };
155 check_added_monitors!(nodes[0], 1);
156 let events = nodes[0].node.get_and_clear_pending_events();
157 assert_eq!(events.len(), 1);
161 fn test_simple_monitor_permanent_update_fail() {
162 do_test_simple_monitor_permanent_update_fail(false);
164 // Test behavior when the persister returns a PermanentFailure.
165 do_test_simple_monitor_permanent_update_fail(true);
168 // If persister_fail is true, we have the persister return a TemporaryFailure instead of the
169 // higher-level ChainMonitor.
170 fn do_test_simple_monitor_temporary_update_fail(disconnect: bool, persister_fail: bool) {
171 // Test that we can recover from a simple temporary monitor update failure optionally with
172 // a disconnect in between
173 let mut chanmon_cfgs = create_chanmon_cfgs(2);
174 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
175 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
176 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
177 let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
178 let logger = test_utils::TestLogger::new();
180 let (payment_preimage_1, payment_hash_1, payment_secret_1) = get_payment_preimage_hash!(&nodes[1]);
182 match persister_fail {
183 true => chanmon_cfgs[0].persister.set_update_ret(Err(ChannelMonitorUpdateErr::TemporaryFailure)),
184 false => *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure))
188 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
189 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
190 unwrap_send_err!(nodes[0].node.send_payment(&route, payment_hash_1, &Some(payment_secret_1)), false, APIError::MonitorUpdateFailed, {});
191 check_added_monitors!(nodes[0], 1);
194 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
195 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
196 assert_eq!(nodes[0].node.list_channels().len(), 1);
199 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
200 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
201 reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
204 match persister_fail {
205 true => chanmon_cfgs[0].persister.set_update_ret(Ok(())),
206 false => *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()))
208 let (outpoint, latest_update) = nodes[0].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
209 nodes[0].node.channel_monitor_updated(&outpoint, latest_update);
210 check_added_monitors!(nodes[0], 0);
212 let mut events_2 = nodes[0].node.get_and_clear_pending_msg_events();
213 assert_eq!(events_2.len(), 1);
214 let payment_event = SendEvent::from_event(events_2.pop().unwrap());
215 assert_eq!(payment_event.node_id, nodes[1].node.get_our_node_id());
216 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
217 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
219 expect_pending_htlcs_forwardable!(nodes[1]);
221 let events_3 = nodes[1].node.get_and_clear_pending_events();
222 assert_eq!(events_3.len(), 1);
224 Event::PaymentReceived { ref payment_hash, ref purpose, amt } => {
225 assert_eq!(payment_hash_1, *payment_hash);
226 assert_eq!(amt, 1000000);
228 PaymentPurpose::InvoicePayment { payment_preimage, payment_secret, .. } => {
229 assert!(payment_preimage.is_none());
230 assert_eq!(payment_secret_1, *payment_secret);
232 _ => panic!("expected PaymentPurpose::InvoicePayment")
235 _ => panic!("Unexpected event"),
238 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1);
240 // Now set it to failed again...
241 let (_, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(&nodes[1]);
243 match persister_fail {
244 true => chanmon_cfgs[0].persister.set_update_ret(Err(ChannelMonitorUpdateErr::TemporaryFailure)),
245 false => *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure))
247 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
248 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
249 unwrap_send_err!(nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)), false, APIError::MonitorUpdateFailed, {});
250 check_added_monitors!(nodes[0], 1);
253 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
254 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
255 assert_eq!(nodes[0].node.list_channels().len(), 1);
258 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
259 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
260 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
263 // ...and make sure we can force-close a frozen channel
264 nodes[0].node.force_close_channel(&channel_id).unwrap();
265 check_added_monitors!(nodes[0], 1);
266 check_closed_broadcast!(nodes[0], true);
268 // TODO: Once we hit the chain with the failure transaction we should check that we get a
269 // PaymentFailed event
271 assert_eq!(nodes[0].node.list_channels().len(), 0);
275 fn test_simple_monitor_temporary_update_fail() {
276 do_test_simple_monitor_temporary_update_fail(false, false);
277 do_test_simple_monitor_temporary_update_fail(true, false);
279 // Test behavior when the persister returns a TemporaryFailure.
280 do_test_simple_monitor_temporary_update_fail(false, true);
281 do_test_simple_monitor_temporary_update_fail(true, true);
284 fn do_test_monitor_temporary_update_fail(disconnect_count: usize) {
285 let disconnect_flags = 8 | 16;
287 // Test that we can recover from a temporary monitor update failure with some in-flight
288 // HTLCs going on at the same time potentially with some disconnection thrown in.
289 // * First we route a payment, then get a temporary monitor update failure when trying to
290 // route a second payment. We then claim the first payment.
291 // * If disconnect_count is set, we will disconnect at this point (which is likely as
292 // TemporaryFailure likely indicates net disconnect which resulted in failing to update
293 // the ChannelMonitor on a watchtower).
294 // * If !(disconnect_count & 16) we deliver a update_fulfill_htlc/CS for the first payment
295 // immediately, otherwise we wait disconnect and deliver them via the reconnect
296 // channel_reestablish processing (ie disconnect_count & 16 makes no sense if
297 // disconnect_count & !disconnect_flags is 0).
298 // * We then update the channel monitor, reconnecting if disconnect_count is set and walk
299 // through message sending, potentially disconnect/reconnecting multiple times based on
300 // disconnect_count, to get the update_fulfill_htlc through.
301 // * We then walk through more message exchanges to get the original update_add_htlc
302 // through, swapping message ordering based on disconnect_count & 8 and optionally
303 // disconnect/reconnecting based on disconnect_count.
304 let chanmon_cfgs = create_chanmon_cfgs(2);
305 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
306 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
307 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
308 let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
309 let logger = test_utils::TestLogger::new();
311 let (payment_preimage_1, payment_hash_1, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
313 // Now try to send a second payment which will fail to send
314 let (payment_preimage_2, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[1]);
316 *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
317 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
318 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
319 unwrap_send_err!(nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)), false, APIError::MonitorUpdateFailed, {});
320 check_added_monitors!(nodes[0], 1);
323 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
324 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
325 assert_eq!(nodes[0].node.list_channels().len(), 1);
327 // Claim the previous payment, which will result in a update_fulfill_htlc/CS from nodes[1]
328 // but nodes[0] won't respond since it is frozen.
329 assert!(nodes[1].node.claim_funds(payment_preimage_1));
330 check_added_monitors!(nodes[1], 1);
331 let events_2 = nodes[1].node.get_and_clear_pending_msg_events();
332 assert_eq!(events_2.len(), 1);
333 let (bs_initial_fulfill, bs_initial_commitment_signed) = match events_2[0] {
334 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 } } => {
335 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
336 assert!(update_add_htlcs.is_empty());
337 assert_eq!(update_fulfill_htlcs.len(), 1);
338 assert!(update_fail_htlcs.is_empty());
339 assert!(update_fail_malformed_htlcs.is_empty());
340 assert!(update_fee.is_none());
342 if (disconnect_count & 16) == 0 {
343 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_htlcs[0]);
344 let events_3 = nodes[0].node.get_and_clear_pending_events();
345 assert_eq!(events_3.len(), 1);
347 Event::PaymentSent { ref payment_preimage, ref payment_hash } => {
348 assert_eq!(*payment_preimage, payment_preimage_1);
349 assert_eq!(*payment_hash, payment_hash_1);
351 _ => panic!("Unexpected event"),
354 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), commitment_signed);
355 check_added_monitors!(nodes[0], 1);
356 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
357 nodes[0].logger.assert_log("lightning::ln::channelmanager".to_string(), "Previous monitor update failure prevented generation of RAA".to_string(), 1);
360 (update_fulfill_htlcs[0].clone(), commitment_signed.clone())
362 _ => panic!("Unexpected event"),
365 if disconnect_count & !disconnect_flags > 0 {
366 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
367 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
370 // Now fix monitor updating...
371 *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()));
372 let (outpoint, latest_update) = nodes[0].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
373 nodes[0].node.channel_monitor_updated(&outpoint, latest_update);
374 check_added_monitors!(nodes[0], 0);
376 macro_rules! disconnect_reconnect_peers { () => { {
377 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
378 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
380 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
381 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
382 assert_eq!(reestablish_1.len(), 1);
383 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
384 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
385 assert_eq!(reestablish_2.len(), 1);
387 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
388 let as_resp = handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
389 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
390 let bs_resp = handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
392 assert!(as_resp.0.is_none());
393 assert!(bs_resp.0.is_none());
395 (reestablish_1, reestablish_2, as_resp, bs_resp)
398 let (payment_event, initial_revoke_and_ack) = if disconnect_count & !disconnect_flags > 0 {
399 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
400 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
402 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
403 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
404 assert_eq!(reestablish_1.len(), 1);
405 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
406 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
407 assert_eq!(reestablish_2.len(), 1);
409 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
410 check_added_monitors!(nodes[0], 0);
411 let mut as_resp = handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
412 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
413 check_added_monitors!(nodes[1], 0);
414 let mut bs_resp = handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
416 assert!(as_resp.0.is_none());
417 assert!(bs_resp.0.is_none());
419 assert!(bs_resp.1.is_none());
420 if (disconnect_count & 16) == 0 {
421 assert!(bs_resp.2.is_none());
423 assert!(as_resp.1.is_some());
424 assert!(as_resp.2.is_some());
425 assert!(as_resp.3 == RAACommitmentOrder::CommitmentFirst);
427 assert!(bs_resp.2.as_ref().unwrap().update_add_htlcs.is_empty());
428 assert!(bs_resp.2.as_ref().unwrap().update_fail_htlcs.is_empty());
429 assert!(bs_resp.2.as_ref().unwrap().update_fail_malformed_htlcs.is_empty());
430 assert!(bs_resp.2.as_ref().unwrap().update_fee.is_none());
431 assert!(bs_resp.2.as_ref().unwrap().update_fulfill_htlcs == vec![bs_initial_fulfill]);
432 assert!(bs_resp.2.as_ref().unwrap().commitment_signed == bs_initial_commitment_signed);
434 assert!(as_resp.1.is_none());
436 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_resp.2.as_ref().unwrap().update_fulfill_htlcs[0]);
437 let events_3 = nodes[0].node.get_and_clear_pending_events();
438 assert_eq!(events_3.len(), 1);
440 Event::PaymentSent { ref payment_preimage, ref payment_hash } => {
441 assert_eq!(*payment_preimage, payment_preimage_1);
442 assert_eq!(*payment_hash, payment_hash_1);
444 _ => panic!("Unexpected event"),
447 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_resp.2.as_ref().unwrap().commitment_signed);
448 let as_resp_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
449 // No commitment_signed so get_event_msg's assert(len == 1) passes
450 check_added_monitors!(nodes[0], 1);
452 as_resp.1 = Some(as_resp_raa);
456 if disconnect_count & !disconnect_flags > 1 {
457 let (second_reestablish_1, second_reestablish_2, second_as_resp, second_bs_resp) = disconnect_reconnect_peers!();
459 if (disconnect_count & 16) == 0 {
460 assert!(reestablish_1 == second_reestablish_1);
461 assert!(reestablish_2 == second_reestablish_2);
463 assert!(as_resp == second_as_resp);
464 assert!(bs_resp == second_bs_resp);
467 (SendEvent::from_commitment_update(nodes[1].node.get_our_node_id(), as_resp.2.unwrap()), as_resp.1.unwrap())
469 let mut events_4 = nodes[0].node.get_and_clear_pending_msg_events();
470 assert_eq!(events_4.len(), 2);
471 (SendEvent::from_event(events_4.remove(0)), match events_4[0] {
472 MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
473 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
476 _ => panic!("Unexpected event"),
480 assert_eq!(payment_event.node_id, nodes[1].node.get_our_node_id());
482 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
483 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event.commitment_msg);
484 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
485 // nodes[1] is awaiting an RAA from nodes[0] still so get_event_msg's assert(len == 1) passes
486 check_added_monitors!(nodes[1], 1);
488 if disconnect_count & !disconnect_flags > 2 {
489 let (_, _, as_resp, bs_resp) = disconnect_reconnect_peers!();
491 assert!(as_resp.1.unwrap() == initial_revoke_and_ack);
492 assert!(bs_resp.1.unwrap() == bs_revoke_and_ack);
494 assert!(as_resp.2.is_none());
495 assert!(bs_resp.2.is_none());
498 let as_commitment_update;
499 let bs_second_commitment_update;
501 macro_rules! handle_bs_raa { () => {
502 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack);
503 as_commitment_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
504 assert!(as_commitment_update.update_add_htlcs.is_empty());
505 assert!(as_commitment_update.update_fulfill_htlcs.is_empty());
506 assert!(as_commitment_update.update_fail_htlcs.is_empty());
507 assert!(as_commitment_update.update_fail_malformed_htlcs.is_empty());
508 assert!(as_commitment_update.update_fee.is_none());
509 check_added_monitors!(nodes[0], 1);
512 macro_rules! handle_initial_raa { () => {
513 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &initial_revoke_and_ack);
514 bs_second_commitment_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
515 assert!(bs_second_commitment_update.update_add_htlcs.is_empty());
516 assert!(bs_second_commitment_update.update_fulfill_htlcs.is_empty());
517 assert!(bs_second_commitment_update.update_fail_htlcs.is_empty());
518 assert!(bs_second_commitment_update.update_fail_malformed_htlcs.is_empty());
519 assert!(bs_second_commitment_update.update_fee.is_none());
520 check_added_monitors!(nodes[1], 1);
523 if (disconnect_count & 8) == 0 {
526 if disconnect_count & !disconnect_flags > 3 {
527 let (_, _, as_resp, bs_resp) = disconnect_reconnect_peers!();
529 assert!(as_resp.1.unwrap() == initial_revoke_and_ack);
530 assert!(bs_resp.1.is_none());
532 assert!(as_resp.2.unwrap() == as_commitment_update);
533 assert!(bs_resp.2.is_none());
535 assert!(as_resp.3 == RAACommitmentOrder::RevokeAndACKFirst);
538 handle_initial_raa!();
540 if disconnect_count & !disconnect_flags > 4 {
541 let (_, _, as_resp, bs_resp) = disconnect_reconnect_peers!();
543 assert!(as_resp.1.is_none());
544 assert!(bs_resp.1.is_none());
546 assert!(as_resp.2.unwrap() == as_commitment_update);
547 assert!(bs_resp.2.unwrap() == bs_second_commitment_update);
550 handle_initial_raa!();
552 if disconnect_count & !disconnect_flags > 3 {
553 let (_, _, as_resp, bs_resp) = disconnect_reconnect_peers!();
555 assert!(as_resp.1.is_none());
556 assert!(bs_resp.1.unwrap() == bs_revoke_and_ack);
558 assert!(as_resp.2.is_none());
559 assert!(bs_resp.2.unwrap() == bs_second_commitment_update);
561 assert!(bs_resp.3 == RAACommitmentOrder::RevokeAndACKFirst);
566 if disconnect_count & !disconnect_flags > 4 {
567 let (_, _, as_resp, bs_resp) = disconnect_reconnect_peers!();
569 assert!(as_resp.1.is_none());
570 assert!(bs_resp.1.is_none());
572 assert!(as_resp.2.unwrap() == as_commitment_update);
573 assert!(bs_resp.2.unwrap() == bs_second_commitment_update);
577 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_commitment_update.commitment_signed);
578 let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
579 // No commitment_signed so get_event_msg's assert(len == 1) passes
580 check_added_monitors!(nodes[0], 1);
582 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_update.commitment_signed);
583 let bs_second_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
584 // No commitment_signed so get_event_msg's assert(len == 1) passes
585 check_added_monitors!(nodes[1], 1);
587 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack);
588 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
589 check_added_monitors!(nodes[1], 1);
591 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke_and_ack);
592 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
593 check_added_monitors!(nodes[0], 1);
595 expect_pending_htlcs_forwardable!(nodes[1]);
597 let events_5 = nodes[1].node.get_and_clear_pending_events();
598 assert_eq!(events_5.len(), 1);
600 Event::PaymentReceived { ref payment_hash, ref purpose, amt } => {
601 assert_eq!(payment_hash_2, *payment_hash);
602 assert_eq!(amt, 1000000);
604 PaymentPurpose::InvoicePayment { payment_preimage, payment_secret, .. } => {
605 assert!(payment_preimage.is_none());
606 assert_eq!(payment_secret_2, *payment_secret);
608 _ => panic!("expected PaymentPurpose::InvoicePayment")
611 _ => panic!("Unexpected event"),
614 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2);
618 fn test_monitor_temporary_update_fail_a() {
619 do_test_monitor_temporary_update_fail(0);
620 do_test_monitor_temporary_update_fail(1);
621 do_test_monitor_temporary_update_fail(2);
622 do_test_monitor_temporary_update_fail(3);
623 do_test_monitor_temporary_update_fail(4);
624 do_test_monitor_temporary_update_fail(5);
628 fn test_monitor_temporary_update_fail_b() {
629 do_test_monitor_temporary_update_fail(2 | 8);
630 do_test_monitor_temporary_update_fail(3 | 8);
631 do_test_monitor_temporary_update_fail(4 | 8);
632 do_test_monitor_temporary_update_fail(5 | 8);
636 fn test_monitor_temporary_update_fail_c() {
637 do_test_monitor_temporary_update_fail(1 | 16);
638 do_test_monitor_temporary_update_fail(2 | 16);
639 do_test_monitor_temporary_update_fail(3 | 16);
640 do_test_monitor_temporary_update_fail(2 | 8 | 16);
641 do_test_monitor_temporary_update_fail(3 | 8 | 16);
645 fn test_monitor_update_fail_cs() {
646 // Tests handling of a monitor update failure when processing an incoming commitment_signed
647 let chanmon_cfgs = create_chanmon_cfgs(2);
648 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
649 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
650 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
651 let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
652 let logger = test_utils::TestLogger::new();
654 let (payment_preimage, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[1]);
656 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
657 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
658 nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap();
659 check_added_monitors!(nodes[0], 1);
662 let send_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0));
663 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_event.msgs[0]);
665 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
666 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send_event.commitment_msg);
667 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
668 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Failed to update ChannelMonitor".to_string(), 1);
669 check_added_monitors!(nodes[1], 1);
670 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
672 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()));
673 let (outpoint, latest_update) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
674 nodes[1].node.channel_monitor_updated(&outpoint, latest_update);
675 check_added_monitors!(nodes[1], 0);
676 let responses = nodes[1].node.get_and_clear_pending_msg_events();
677 assert_eq!(responses.len(), 2);
680 MessageSendEvent::SendRevokeAndACK { ref msg, ref node_id } => {
681 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
682 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &msg);
683 check_added_monitors!(nodes[0], 1);
685 _ => panic!("Unexpected event"),
688 MessageSendEvent::UpdateHTLCs { ref updates, ref node_id } => {
689 assert!(updates.update_add_htlcs.is_empty());
690 assert!(updates.update_fulfill_htlcs.is_empty());
691 assert!(updates.update_fail_htlcs.is_empty());
692 assert!(updates.update_fail_malformed_htlcs.is_empty());
693 assert!(updates.update_fee.is_none());
694 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
696 *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
697 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &updates.commitment_signed);
698 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
699 nodes[0].logger.assert_log("lightning::ln::channelmanager".to_string(), "Failed to update ChannelMonitor".to_string(), 1);
700 check_added_monitors!(nodes[0], 1);
701 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
703 _ => panic!("Unexpected event"),
706 *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()));
707 let (outpoint, latest_update) = nodes[0].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
708 nodes[0].node.channel_monitor_updated(&outpoint, latest_update);
709 check_added_monitors!(nodes[0], 0);
711 let final_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
712 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &final_raa);
713 check_added_monitors!(nodes[1], 1);
715 expect_pending_htlcs_forwardable!(nodes[1]);
717 let events = nodes[1].node.get_and_clear_pending_events();
718 assert_eq!(events.len(), 1);
720 Event::PaymentReceived { payment_hash, ref purpose, amt } => {
721 assert_eq!(payment_hash, our_payment_hash);
722 assert_eq!(amt, 1000000);
724 PaymentPurpose::InvoicePayment { payment_preimage, payment_secret, .. } => {
725 assert!(payment_preimage.is_none());
726 assert_eq!(our_payment_secret, *payment_secret);
728 _ => panic!("expected PaymentPurpose::InvoicePayment")
731 _ => panic!("Unexpected event"),
734 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage);
738 fn test_monitor_update_fail_no_rebroadcast() {
739 // Tests handling of a monitor update failure when no message rebroadcasting on
740 // channel_monitor_updated() is required. Backported from chanmon_fail_consistency
742 let chanmon_cfgs = create_chanmon_cfgs(2);
743 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
744 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
745 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
746 let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
747 let logger = test_utils::TestLogger::new();
749 let (payment_preimage_1, our_payment_hash, payment_secret_1) = get_payment_preimage_hash!(nodes[1]);
751 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
752 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
753 nodes[0].node.send_payment(&route, our_payment_hash, &Some(payment_secret_1)).unwrap();
754 check_added_monitors!(nodes[0], 1);
757 let send_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0));
758 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_event.msgs[0]);
759 let bs_raa = commitment_signed_dance!(nodes[1], nodes[0], send_event.commitment_msg, false, true, false, true);
761 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
762 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &bs_raa);
763 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
764 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Failed to update ChannelMonitor".to_string(), 1);
765 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
766 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
767 check_added_monitors!(nodes[1], 1);
769 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()));
770 let (outpoint, latest_update) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
771 nodes[1].node.channel_monitor_updated(&outpoint, latest_update);
772 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
773 check_added_monitors!(nodes[1], 0);
774 expect_pending_htlcs_forwardable!(nodes[1]);
776 let events = nodes[1].node.get_and_clear_pending_events();
777 assert_eq!(events.len(), 1);
779 Event::PaymentReceived { payment_hash, .. } => {
780 assert_eq!(payment_hash, our_payment_hash);
782 _ => panic!("Unexpected event"),
785 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1);
789 fn test_monitor_update_raa_while_paused() {
790 // Tests handling of an RAA while monitor updating has already been marked failed.
791 // Backported from chanmon_fail_consistency fuzz tests as this used to be broken.
792 let chanmon_cfgs = create_chanmon_cfgs(2);
793 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
794 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
795 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
796 let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
797 let logger = test_utils::TestLogger::new();
799 send_payment(&nodes[0], &[&nodes[1]], 5000000);
800 let (payment_preimage_1, our_payment_hash_1, our_payment_secret_1) = get_payment_preimage_hash!(nodes[1]);
802 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
803 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
804 nodes[0].node.send_payment(&route, our_payment_hash_1, &Some(our_payment_secret_1)).unwrap();
805 check_added_monitors!(nodes[0], 1);
807 let send_event_1 = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0));
809 let (payment_preimage_2, our_payment_hash_2, our_payment_secret_2) = get_payment_preimage_hash!(nodes[0]);
811 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
812 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
813 nodes[1].node.send_payment(&route, our_payment_hash_2, &Some(our_payment_secret_2)).unwrap();
814 check_added_monitors!(nodes[1], 1);
816 let send_event_2 = SendEvent::from_event(nodes[1].node.get_and_clear_pending_msg_events().remove(0));
818 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_event_1.msgs[0]);
819 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send_event_1.commitment_msg);
820 check_added_monitors!(nodes[1], 1);
821 let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
823 *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
824 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &send_event_2.msgs[0]);
825 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &send_event_2.commitment_msg);
826 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
827 nodes[0].logger.assert_log("lightning::ln::channelmanager".to_string(), "Failed to update ChannelMonitor".to_string(), 1);
828 check_added_monitors!(nodes[0], 1);
830 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
831 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
832 nodes[0].logger.assert_log("lightning::ln::channelmanager".to_string(), "Previous monitor update failure prevented responses to RAA".to_string(), 1);
833 check_added_monitors!(nodes[0], 1);
835 *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()));
836 let (outpoint, latest_update) = nodes[0].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
837 nodes[0].node.channel_monitor_updated(&outpoint, latest_update);
838 check_added_monitors!(nodes[0], 0);
840 let as_update_raa = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
841 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_update_raa.0);
842 check_added_monitors!(nodes[1], 1);
843 let bs_cs = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
845 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_update_raa.1);
846 check_added_monitors!(nodes[1], 1);
847 let bs_second_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
849 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_cs.commitment_signed);
850 check_added_monitors!(nodes[0], 1);
851 let as_second_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
853 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_raa);
854 check_added_monitors!(nodes[0], 1);
855 expect_pending_htlcs_forwardable!(nodes[0]);
856 expect_payment_received!(nodes[0], our_payment_hash_2, our_payment_secret_2, 1000000);
858 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_second_raa);
859 check_added_monitors!(nodes[1], 1);
860 expect_pending_htlcs_forwardable!(nodes[1]);
861 expect_payment_received!(nodes[1], our_payment_hash_1, our_payment_secret_1, 1000000);
863 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1);
864 claim_payment(&nodes[1], &[&nodes[0]], payment_preimage_2);
867 fn do_test_monitor_update_fail_raa(test_ignore_second_cs: bool) {
868 // Tests handling of a monitor update failure when processing an incoming RAA
869 let chanmon_cfgs = create_chanmon_cfgs(3);
870 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
871 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
872 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
873 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
874 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
875 let logger = test_utils::TestLogger::new();
877 // Rebalance a bit so that we can send backwards from 2 to 1.
878 send_payment(&nodes[0], &[&nodes[1], &nodes[2]], 5000000);
880 // Route a first payment that we'll fail backwards
881 let (_, payment_hash_1, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1000000);
883 // Fail the payment backwards, failing the monitor update on nodes[1]'s receipt of the RAA
884 assert!(nodes[2].node.fail_htlc_backwards(&payment_hash_1));
885 expect_pending_htlcs_forwardable!(nodes[2]);
886 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_fulfill_htlcs.is_empty());
891 assert_eq!(updates.update_fail_htlcs.len(), 1);
892 assert!(updates.update_fail_malformed_htlcs.is_empty());
893 assert!(updates.update_fee.is_none());
894 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
896 let bs_revoke_and_ack = commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false, true, false, true);
897 check_added_monitors!(nodes[0], 0);
899 // While the second channel is AwaitingRAA, forward a second payment to get it into the
901 let (payment_preimage_2, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[2]);
903 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
904 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
905 nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
906 check_added_monitors!(nodes[0], 1);
909 let mut send_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0));
910 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_event.msgs[0]);
911 commitment_signed_dance!(nodes[1], nodes[0], send_event.commitment_msg, false);
913 expect_pending_htlcs_forwardable!(nodes[1]);
914 check_added_monitors!(nodes[1], 0);
915 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
917 // Now fail monitor updating.
918 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
919 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_revoke_and_ack);
920 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
921 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Failed to update ChannelMonitor".to_string(), 1);
922 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
923 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
924 check_added_monitors!(nodes[1], 1);
926 // Forward a third payment which will also be added to the holding cell, despite the channel
927 // being paused waiting a monitor update.
928 let (_, payment_hash_3, payment_secret_3) = get_payment_preimage_hash!(nodes[2]);
930 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
931 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
932 nodes[0].node.send_payment(&route, payment_hash_3, &Some(payment_secret_3)).unwrap();
933 check_added_monitors!(nodes[0], 1);
936 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Ok(())); // We succeed in updating the monitor for the first channel
937 send_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0));
938 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_event.msgs[0]);
939 commitment_signed_dance!(nodes[1], nodes[0], send_event.commitment_msg, false, true);
940 check_added_monitors!(nodes[1], 0);
942 // Call forward_pending_htlcs and check that the new HTLC was simply added to the holding cell
943 // and not forwarded.
944 expect_pending_htlcs_forwardable!(nodes[1]);
945 check_added_monitors!(nodes[1], 0);
946 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
948 let (payment_preimage_4, payment_hash_4) = if test_ignore_second_cs {
949 // Try to route another payment backwards from 2 to make sure 1 holds off on responding
950 let (payment_preimage_4, payment_hash_4, payment_secret_4) = get_payment_preimage_hash!(nodes[0]);
951 let net_graph_msg_handler = &nodes[2].net_graph_msg_handler;
952 let route = get_route(&nodes[2].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
953 nodes[2].node.send_payment(&route, payment_hash_4, &Some(payment_secret_4)).unwrap();
954 check_added_monitors!(nodes[2], 1);
956 send_event = SendEvent::from_event(nodes[2].node.get_and_clear_pending_msg_events().remove(0));
957 nodes[1].node.handle_update_add_htlc(&nodes[2].node.get_our_node_id(), &send_event.msgs[0]);
958 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &send_event.commitment_msg);
959 check_added_monitors!(nodes[1], 1);
960 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
961 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Previous monitor update failure prevented generation of RAA".to_string(), 1);
962 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
963 (Some(payment_preimage_4), Some(payment_hash_4))
964 } else { (None, None) };
966 // Restore monitor updating, ensuring we immediately get a fail-back update and a
967 // update_add update.
968 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()));
969 let (outpoint, latest_update) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_2.2).unwrap().clone();
970 nodes[1].node.channel_monitor_updated(&outpoint, latest_update);
971 check_added_monitors!(nodes[1], 0);
972 expect_pending_htlcs_forwardable!(nodes[1]);
973 check_added_monitors!(nodes[1], 1);
975 let mut events_3 = nodes[1].node.get_and_clear_pending_msg_events();
976 if test_ignore_second_cs {
977 assert_eq!(events_3.len(), 3);
979 assert_eq!(events_3.len(), 2);
982 // Note that the ordering of the events for different nodes is non-prescriptive, though the
983 // ordering of the two events that both go to nodes[2] have to stay in the same order.
984 let messages_a = match events_3.pop().unwrap() {
985 MessageSendEvent::UpdateHTLCs { node_id, mut updates } => {
986 assert_eq!(node_id, nodes[0].node.get_our_node_id());
987 assert!(updates.update_fulfill_htlcs.is_empty());
988 assert_eq!(updates.update_fail_htlcs.len(), 1);
989 assert!(updates.update_fail_malformed_htlcs.is_empty());
990 assert!(updates.update_add_htlcs.is_empty());
991 assert!(updates.update_fee.is_none());
992 (updates.update_fail_htlcs.remove(0), updates.commitment_signed)
994 _ => panic!("Unexpected event type!"),
996 let raa = if test_ignore_second_cs {
997 match events_3.remove(1) {
998 MessageSendEvent::SendRevokeAndACK { node_id, msg } => {
999 assert_eq!(node_id, nodes[2].node.get_our_node_id());
1002 _ => panic!("Unexpected event"),
1005 let send_event_b = SendEvent::from_event(events_3.remove(0));
1006 assert_eq!(send_event_b.node_id, nodes[2].node.get_our_node_id());
1008 // Now deliver the new messages...
1010 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &messages_a.0);
1011 commitment_signed_dance!(nodes[0], nodes[1], messages_a.1, false);
1012 expect_payment_failed!(nodes[0], payment_hash_1, true);
1014 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &send_event_b.msgs[0]);
1016 if test_ignore_second_cs {
1017 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &send_event_b.commitment_msg);
1018 check_added_monitors!(nodes[2], 1);
1019 let bs_revoke_and_ack = get_event_msg!(nodes[2], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
1020 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &raa.unwrap());
1021 check_added_monitors!(nodes[2], 1);
1022 let bs_cs = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
1023 assert!(bs_cs.update_add_htlcs.is_empty());
1024 assert!(bs_cs.update_fail_htlcs.is_empty());
1025 assert!(bs_cs.update_fail_malformed_htlcs.is_empty());
1026 assert!(bs_cs.update_fulfill_htlcs.is_empty());
1027 assert!(bs_cs.update_fee.is_none());
1029 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_revoke_and_ack);
1030 check_added_monitors!(nodes[1], 1);
1031 as_cs = get_htlc_update_msgs!(nodes[1], nodes[2].node.get_our_node_id());
1033 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &bs_cs.commitment_signed);
1034 check_added_monitors!(nodes[1], 1);
1036 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &send_event_b.commitment_msg);
1037 check_added_monitors!(nodes[2], 1);
1039 let bs_revoke_and_commit = nodes[2].node.get_and_clear_pending_msg_events();
1040 assert_eq!(bs_revoke_and_commit.len(), 2);
1041 match bs_revoke_and_commit[0] {
1042 MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
1043 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
1044 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &msg);
1045 check_added_monitors!(nodes[1], 1);
1047 _ => panic!("Unexpected event"),
1050 as_cs = get_htlc_update_msgs!(nodes[1], nodes[2].node.get_our_node_id());
1052 match bs_revoke_and_commit[1] {
1053 MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => {
1054 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
1055 assert!(updates.update_add_htlcs.is_empty());
1056 assert!(updates.update_fail_htlcs.is_empty());
1057 assert!(updates.update_fail_malformed_htlcs.is_empty());
1058 assert!(updates.update_fulfill_htlcs.is_empty());
1059 assert!(updates.update_fee.is_none());
1060 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &updates.commitment_signed);
1061 check_added_monitors!(nodes[1], 1);
1063 _ => panic!("Unexpected event"),
1067 assert_eq!(as_cs.update_add_htlcs.len(), 1);
1068 assert!(as_cs.update_fail_htlcs.is_empty());
1069 assert!(as_cs.update_fail_malformed_htlcs.is_empty());
1070 assert!(as_cs.update_fulfill_htlcs.is_empty());
1071 assert!(as_cs.update_fee.is_none());
1072 let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
1075 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &as_cs.update_add_htlcs[0]);
1076 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &as_cs.commitment_signed);
1077 check_added_monitors!(nodes[2], 1);
1078 let bs_second_raa = get_event_msg!(nodes[2], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
1080 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa);
1081 check_added_monitors!(nodes[2], 1);
1082 let bs_second_cs = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
1084 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_second_raa);
1085 check_added_monitors!(nodes[1], 1);
1086 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1088 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &bs_second_cs.commitment_signed);
1089 check_added_monitors!(nodes[1], 1);
1090 let as_second_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
1092 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_second_raa);
1093 check_added_monitors!(nodes[2], 1);
1094 assert!(nodes[2].node.get_and_clear_pending_msg_events().is_empty());
1096 expect_pending_htlcs_forwardable!(nodes[2]);
1098 let events_6 = nodes[2].node.get_and_clear_pending_events();
1099 assert_eq!(events_6.len(), 2);
1101 Event::PaymentReceived { payment_hash, .. } => { assert_eq!(payment_hash, payment_hash_2); },
1102 _ => panic!("Unexpected event"),
1105 Event::PaymentReceived { payment_hash, .. } => { assert_eq!(payment_hash, payment_hash_3); },
1106 _ => panic!("Unexpected event"),
1109 if test_ignore_second_cs {
1110 expect_pending_htlcs_forwardable!(nodes[1]);
1111 check_added_monitors!(nodes[1], 1);
1113 send_event = SendEvent::from_node(&nodes[1]);
1114 assert_eq!(send_event.node_id, nodes[0].node.get_our_node_id());
1115 assert_eq!(send_event.msgs.len(), 1);
1116 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &send_event.msgs[0]);
1117 commitment_signed_dance!(nodes[0], nodes[1], send_event.commitment_msg, false);
1119 expect_pending_htlcs_forwardable!(nodes[0]);
1121 let events_9 = nodes[0].node.get_and_clear_pending_events();
1122 assert_eq!(events_9.len(), 1);
1124 Event::PaymentReceived { payment_hash, .. } => assert_eq!(payment_hash, payment_hash_4.unwrap()),
1125 _ => panic!("Unexpected event"),
1127 claim_payment(&nodes[2], &[&nodes[1], &nodes[0]], payment_preimage_4.unwrap());
1130 claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage_2);
1134 fn test_monitor_update_fail_raa() {
1135 do_test_monitor_update_fail_raa(false);
1136 do_test_monitor_update_fail_raa(true);
1140 fn test_monitor_update_fail_reestablish() {
1141 // Simple test for message retransmission after monitor update failure on
1142 // channel_reestablish generating a monitor update (which comes from freeing holding cell
1144 let chanmon_cfgs = create_chanmon_cfgs(3);
1145 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1146 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1147 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1148 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
1149 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
1151 let (our_payment_preimage, _, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1000000);
1153 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
1154 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
1156 assert!(nodes[2].node.claim_funds(our_payment_preimage));
1157 check_added_monitors!(nodes[2], 1);
1158 let mut updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
1159 assert!(updates.update_add_htlcs.is_empty());
1160 assert!(updates.update_fail_htlcs.is_empty());
1161 assert!(updates.update_fail_malformed_htlcs.is_empty());
1162 assert!(updates.update_fee.is_none());
1163 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
1164 nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
1165 expect_payment_forwarded!(nodes[1], Some(1000), false);
1166 check_added_monitors!(nodes[1], 1);
1167 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1168 commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false);
1170 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
1171 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1172 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1174 let as_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
1175 let bs_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
1177 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &bs_reestablish);
1179 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &as_reestablish);
1181 get_event_msg!(nodes[0], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id())
1182 .contents.flags & 2, 0); // The "disabled" bit should be unset as we just reconnected
1184 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Failed to update ChannelMonitor".to_string(), 1);
1185 check_added_monitors!(nodes[1], 1);
1187 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
1188 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
1190 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1191 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1193 assert!(as_reestablish == get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id()));
1194 assert!(bs_reestablish == get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id()));
1196 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &bs_reestablish);
1198 get_event_msg!(nodes[0], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id())
1199 .contents.flags & 2, 0); // The "disabled" bit should be unset as we just reconnected
1201 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &as_reestablish);
1202 check_added_monitors!(nodes[1], 0);
1204 get_event_msg!(nodes[1], MessageSendEvent::SendChannelUpdate, nodes[0].node.get_our_node_id())
1205 .contents.flags & 2, 0); // The "disabled" bit should be unset as we just reconnected
1207 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()));
1208 let (outpoint, latest_update) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_1.2).unwrap().clone();
1209 nodes[1].node.channel_monitor_updated(&outpoint, latest_update);
1210 check_added_monitors!(nodes[1], 0);
1212 updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1213 assert!(updates.update_add_htlcs.is_empty());
1214 assert!(updates.update_fail_htlcs.is_empty());
1215 assert!(updates.update_fail_malformed_htlcs.is_empty());
1216 assert!(updates.update_fee.is_none());
1217 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
1218 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
1219 commitment_signed_dance!(nodes[0], nodes[1], updates.commitment_signed, false);
1221 let events = nodes[0].node.get_and_clear_pending_events();
1222 assert_eq!(events.len(), 1);
1224 Event::PaymentSent { payment_preimage, .. } => assert_eq!(payment_preimage, our_payment_preimage),
1225 _ => panic!("Unexpected event"),
1230 fn raa_no_response_awaiting_raa_state() {
1231 // This is a rather convoluted test which ensures that if handling of an RAA does not happen
1232 // due to a previous monitor update failure, we still set AwaitingRemoteRevoke on the channel
1233 // in question (assuming it intends to respond with a CS after monitor updating is restored).
1234 // Backported from chanmon_fail_consistency fuzz tests as this used to be broken.
1235 let chanmon_cfgs = create_chanmon_cfgs(2);
1236 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1237 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1238 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1239 let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
1240 let logger = test_utils::TestLogger::new();
1242 let (payment_preimage_1, payment_hash_1, payment_secret_1) = get_payment_preimage_hash!(nodes[1]);
1243 let (payment_preimage_2, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[1]);
1244 let (payment_preimage_3, payment_hash_3, payment_secret_3) = get_payment_preimage_hash!(nodes[1]);
1246 // Queue up two payments - one will be delivered right away, one immediately goes into the
1247 // holding cell as nodes[0] is AwaitingRAA. Ultimately this allows us to deliver an RAA
1248 // immediately after a CS. By setting failing the monitor update failure from the CS (which
1249 // requires only an RAA response due to AwaitingRAA) we can deliver the RAA and require the CS
1250 // generation during RAA while in monitor-update-failed state.
1252 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1253 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
1254 nodes[0].node.send_payment(&route, payment_hash_1, &Some(payment_secret_1)).unwrap();
1255 check_added_monitors!(nodes[0], 1);
1256 nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
1257 check_added_monitors!(nodes[0], 0);
1260 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1261 assert_eq!(events.len(), 1);
1262 let payment_event = SendEvent::from_event(events.pop().unwrap());
1263 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
1264 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event.commitment_msg);
1265 check_added_monitors!(nodes[1], 1);
1267 let bs_responses = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1268 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_responses.0);
1269 check_added_monitors!(nodes[0], 1);
1270 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1271 assert_eq!(events.len(), 1);
1272 let payment_event = SendEvent::from_event(events.pop().unwrap());
1274 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_responses.1);
1275 check_added_monitors!(nodes[0], 1);
1276 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
1278 // Now we have a CS queued up which adds a new HTLC (which will need a RAA/CS response from
1279 // nodes[1]) followed by an RAA. Fail the monitor updating prior to the CS, deliver the RAA,
1280 // then restore channel monitor updates.
1281 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
1282 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
1283 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event.commitment_msg);
1284 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1285 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Failed to update ChannelMonitor".to_string(), 1);
1286 check_added_monitors!(nodes[1], 1);
1288 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
1289 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1290 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Previous monitor update failure prevented responses to RAA".to_string(), 1);
1291 check_added_monitors!(nodes[1], 1);
1293 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()));
1294 let (outpoint, latest_update) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
1295 nodes[1].node.channel_monitor_updated(&outpoint, latest_update);
1296 // nodes[1] should be AwaitingRAA here!
1297 check_added_monitors!(nodes[1], 0);
1298 let bs_responses = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1299 expect_pending_htlcs_forwardable!(nodes[1]);
1300 expect_payment_received!(nodes[1], payment_hash_1, payment_secret_1, 1000000);
1302 // We send a third payment here, which is somewhat of a redundant test, but the
1303 // chanmon_fail_consistency test required it to actually find the bug (by seeing out-of-sync
1304 // commitment transaction states) whereas here we can explicitly check for it.
1306 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1307 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
1308 nodes[0].node.send_payment(&route, payment_hash_3, &Some(payment_secret_3)).unwrap();
1309 check_added_monitors!(nodes[0], 0);
1310 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1312 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_responses.0);
1313 check_added_monitors!(nodes[0], 1);
1314 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1315 assert_eq!(events.len(), 1);
1316 let payment_event = SendEvent::from_event(events.pop().unwrap());
1318 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_responses.1);
1319 check_added_monitors!(nodes[0], 1);
1320 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
1322 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
1323 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event.commitment_msg);
1324 check_added_monitors!(nodes[1], 1);
1325 let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
1327 // Finally deliver the RAA to nodes[1] which results in a CS response to the last update
1328 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
1329 check_added_monitors!(nodes[1], 1);
1330 expect_pending_htlcs_forwardable!(nodes[1]);
1331 expect_payment_received!(nodes[1], payment_hash_2, payment_secret_2, 1000000);
1332 let bs_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1334 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
1335 check_added_monitors!(nodes[0], 1);
1337 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_update.commitment_signed);
1338 check_added_monitors!(nodes[0], 1);
1339 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
1341 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
1342 check_added_monitors!(nodes[1], 1);
1343 expect_pending_htlcs_forwardable!(nodes[1]);
1344 expect_payment_received!(nodes[1], payment_hash_3, payment_secret_3, 1000000);
1346 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1);
1347 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2);
1348 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_3);
1352 fn claim_while_disconnected_monitor_update_fail() {
1353 // Test for claiming a payment while disconnected and then having the resulting
1354 // channel-update-generated monitor update fail. This kind of thing isn't a particularly
1355 // contrived case for nodes with network instability.
1356 // Backported from chanmon_fail_consistency fuzz tests as an unmerged version of the handling
1357 // code introduced a regression in this test (specifically, this caught a removal of the
1358 // channel_reestablish handling ensuring the order was sensical given the messages used).
1359 let chanmon_cfgs = create_chanmon_cfgs(2);
1360 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1361 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1362 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1363 let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
1364 let logger = test_utils::TestLogger::new();
1366 // Forward a payment for B to claim
1367 let (payment_preimage_1, payment_hash_1, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
1369 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
1370 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
1372 assert!(nodes[1].node.claim_funds(payment_preimage_1));
1373 check_added_monitors!(nodes[1], 1);
1375 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1376 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1378 let as_reconnect = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
1379 let bs_reconnect = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
1381 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &bs_reconnect);
1382 let _as_channel_update = get_event_msg!(nodes[0], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id());
1384 // Now deliver a's reestablish, freeing the claim from the holding cell, but fail the monitor
1386 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
1388 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &as_reconnect);
1389 let _bs_channel_update = get_event_msg!(nodes[1], MessageSendEvent::SendChannelUpdate, nodes[0].node.get_our_node_id());
1390 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Failed to update ChannelMonitor".to_string(), 1);
1391 check_added_monitors!(nodes[1], 1);
1392 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1394 // Send a second payment from A to B, resulting in a commitment update that gets swallowed with
1395 // the monitor still failed
1396 let (payment_preimage_2, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[1]);
1398 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1399 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
1400 nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
1401 check_added_monitors!(nodes[0], 1);
1404 let as_updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
1405 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &as_updates.update_add_htlcs[0]);
1406 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_updates.commitment_signed);
1407 check_added_monitors!(nodes[1], 1);
1408 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1409 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Previous monitor update failure prevented generation of RAA".to_string(), 1);
1410 // Note that nodes[1] not updating monitor here is OK - it wont take action on the new HTLC
1411 // until we've channel_monitor_update'd and updated for the new commitment transaction.
1413 // Now un-fail the monitor, which will result in B sending its original commitment update,
1414 // receiving the commitment update from A, and the resulting commitment dances.
1415 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()));
1416 let (outpoint, latest_update) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
1417 nodes[1].node.channel_monitor_updated(&outpoint, latest_update);
1418 check_added_monitors!(nodes[1], 0);
1420 let bs_msgs = nodes[1].node.get_and_clear_pending_msg_events();
1421 assert_eq!(bs_msgs.len(), 2);
1424 MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => {
1425 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
1426 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
1427 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &updates.commitment_signed);
1428 check_added_monitors!(nodes[0], 1);
1430 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
1431 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
1432 check_added_monitors!(nodes[1], 1);
1434 _ => panic!("Unexpected event"),
1438 MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
1439 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
1440 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), msg);
1441 check_added_monitors!(nodes[0], 1);
1443 _ => panic!("Unexpected event"),
1446 let as_commitment = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
1448 let bs_commitment = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1449 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_commitment.commitment_signed);
1450 check_added_monitors!(nodes[0], 1);
1451 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
1453 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment.commitment_signed);
1454 check_added_monitors!(nodes[1], 1);
1455 let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
1456 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
1457 check_added_monitors!(nodes[1], 1);
1459 expect_pending_htlcs_forwardable!(nodes[1]);
1460 expect_payment_received!(nodes[1], payment_hash_2, payment_secret_2, 1000000);
1462 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
1463 check_added_monitors!(nodes[0], 1);
1465 let events = nodes[0].node.get_and_clear_pending_events();
1466 assert_eq!(events.len(), 1);
1468 Event::PaymentSent { ref payment_preimage, ref payment_hash } => {
1469 assert_eq!(*payment_preimage, payment_preimage_1);
1470 assert_eq!(*payment_hash, payment_hash_1);
1472 _ => panic!("Unexpected event"),
1475 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2);
1479 fn monitor_failed_no_reestablish_response() {
1480 // Test for receiving a channel_reestablish after a monitor update failure resulted in no
1481 // response to a commitment_signed.
1482 // Backported from chanmon_fail_consistency fuzz tests as it caught a long-standing
1483 // debug_assert!() failure in channel_reestablish handling.
1484 let chanmon_cfgs = create_chanmon_cfgs(2);
1485 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1486 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1487 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1488 let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
1489 let logger = test_utils::TestLogger::new();
1491 // Route the payment and deliver the initial commitment_signed (with a monitor update failure
1493 let (payment_preimage_1, payment_hash_1, payment_secret_1) = get_payment_preimage_hash!(nodes[1]);
1495 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1496 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
1497 nodes[0].node.send_payment(&route, payment_hash_1, &Some(payment_secret_1)).unwrap();
1498 check_added_monitors!(nodes[0], 1);
1501 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
1502 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1503 assert_eq!(events.len(), 1);
1504 let payment_event = SendEvent::from_event(events.pop().unwrap());
1505 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
1506 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event.commitment_msg);
1507 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1508 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Failed to update ChannelMonitor".to_string(), 1);
1509 check_added_monitors!(nodes[1], 1);
1511 // Now disconnect and immediately reconnect, delivering the channel_reestablish while nodes[1]
1512 // is still failing to update monitors.
1513 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
1514 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
1516 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1517 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1519 let as_reconnect = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
1520 let bs_reconnect = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
1522 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &as_reconnect);
1523 let _bs_channel_update = get_event_msg!(nodes[1], MessageSendEvent::SendChannelUpdate, nodes[0].node.get_our_node_id());
1524 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &bs_reconnect);
1525 let _as_channel_update = get_event_msg!(nodes[0], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id());
1527 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()));
1528 let (outpoint, latest_update) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
1529 nodes[1].node.channel_monitor_updated(&outpoint, latest_update);
1530 check_added_monitors!(nodes[1], 0);
1531 let bs_responses = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1533 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_responses.0);
1534 check_added_monitors!(nodes[0], 1);
1535 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_responses.1);
1536 check_added_monitors!(nodes[0], 1);
1538 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
1539 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
1540 check_added_monitors!(nodes[1], 1);
1542 expect_pending_htlcs_forwardable!(nodes[1]);
1543 expect_payment_received!(nodes[1], payment_hash_1, payment_secret_1, 1000000);
1545 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1);
1549 fn first_message_on_recv_ordering() {
1550 // Test that if the initial generator of a monitor-update-frozen state doesn't generate
1551 // messages, we're willing to flip the order of response messages if neccessary in resposne to
1552 // a commitment_signed which needs to send an RAA first.
1553 // At a high level, our goal is to fail monitor updating in response to an RAA which needs no
1554 // response and then handle a CS while in the failed state, requiring an RAA followed by a CS
1555 // response. To do this, we start routing two payments, with the final RAA for the first being
1556 // delivered while B is in AwaitingRAA, hence when we deliver the CS for the second B will
1557 // have no pending response but will want to send a RAA/CS (with the updates for the second
1558 // payment applied).
1559 // Backported from chanmon_fail_consistency fuzz tests as it caught a bug here.
1560 let chanmon_cfgs = create_chanmon_cfgs(2);
1561 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1562 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1563 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1564 let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
1565 let logger = test_utils::TestLogger::new();
1567 // Route the first payment outbound, holding the last RAA for B until we are set up so that we
1568 // can deliver it and fail the monitor update.
1569 let (payment_preimage_1, payment_hash_1, payment_secret_1) = get_payment_preimage_hash!(nodes[1]);
1571 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1572 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
1573 nodes[0].node.send_payment(&route, payment_hash_1, &Some(payment_secret_1)).unwrap();
1574 check_added_monitors!(nodes[0], 1);
1577 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1578 assert_eq!(events.len(), 1);
1579 let payment_event = SendEvent::from_event(events.pop().unwrap());
1580 assert_eq!(payment_event.node_id, nodes[1].node.get_our_node_id());
1581 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
1582 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event.commitment_msg);
1583 check_added_monitors!(nodes[1], 1);
1584 let bs_responses = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1586 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_responses.0);
1587 check_added_monitors!(nodes[0], 1);
1588 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_responses.1);
1589 check_added_monitors!(nodes[0], 1);
1591 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
1593 // Route the second payment, generating an update_add_htlc/commitment_signed
1594 let (payment_preimage_2, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[1]);
1596 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1597 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
1598 nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
1599 check_added_monitors!(nodes[0], 1);
1601 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1602 assert_eq!(events.len(), 1);
1603 let payment_event = SendEvent::from_event(events.pop().unwrap());
1604 assert_eq!(payment_event.node_id, nodes[1].node.get_our_node_id());
1606 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
1608 // Deliver the final RAA for the first payment, which does not require a response. RAAs
1609 // generally require a commitment_signed, so the fact that we're expecting an opposite response
1610 // to the next message also tests resetting the delivery order.
1611 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
1612 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1613 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Failed to update ChannelMonitor".to_string(), 1);
1614 check_added_monitors!(nodes[1], 1);
1616 // Now deliver the update_add_htlc/commitment_signed for the second payment, which does need an
1617 // RAA/CS response, which should be generated when we call channel_monitor_update (with the
1618 // appropriate HTLC acceptance).
1619 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
1620 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event.commitment_msg);
1621 check_added_monitors!(nodes[1], 1);
1622 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1623 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Previous monitor update failure prevented generation of RAA".to_string(), 1);
1625 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()));
1626 let (outpoint, latest_update) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
1627 nodes[1].node.channel_monitor_updated(&outpoint, latest_update);
1628 check_added_monitors!(nodes[1], 0);
1630 expect_pending_htlcs_forwardable!(nodes[1]);
1631 expect_payment_received!(nodes[1], payment_hash_1, payment_secret_1, 1000000);
1633 let bs_responses = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1634 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_responses.0);
1635 check_added_monitors!(nodes[0], 1);
1636 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_responses.1);
1637 check_added_monitors!(nodes[0], 1);
1639 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
1640 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
1641 check_added_monitors!(nodes[1], 1);
1643 expect_pending_htlcs_forwardable!(nodes[1]);
1644 expect_payment_received!(nodes[1], payment_hash_2, payment_secret_2, 1000000);
1646 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1);
1647 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2);
1651 fn test_monitor_update_fail_claim() {
1652 // Basic test for monitor update failures when processing claim_funds calls.
1653 // We set up a simple 3-node network, sending a payment from A to B and failing B's monitor
1654 // update to claim the payment. We then send two payments C->B->A, which are held at B.
1655 // Finally, we restore the channel monitor updating and claim the payment on B, forwarding
1656 // the payments from C onwards to A.
1657 let chanmon_cfgs = create_chanmon_cfgs(3);
1658 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1659 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1660 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1661 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
1662 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
1663 let logger = test_utils::TestLogger::new();
1665 // Rebalance a bit so that we can send backwards from 3 to 2.
1666 send_payment(&nodes[0], &[&nodes[1], &nodes[2]], 5000000);
1668 let (payment_preimage_1, _, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
1670 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
1671 assert!(nodes[1].node.claim_funds(payment_preimage_1));
1672 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Temporary failure claiming HTLC, treating as success: Failed to update ChannelMonitor".to_string(), 1);
1673 check_added_monitors!(nodes[1], 1);
1675 // Note that at this point there is a pending commitment transaction update for A being held by
1676 // B. Even when we go to send the payment from C through B to A, B will not update this
1677 // already-signed commitment transaction and will instead wait for it to resolve before
1678 // forwarding the payment onwards.
1680 let (_, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[0]);
1683 let net_graph_msg_handler = &nodes[2].net_graph_msg_handler;
1684 route = get_route(&nodes[2].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1_000_000, TEST_FINAL_CLTV, &logger).unwrap();
1685 nodes[2].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
1686 check_added_monitors!(nodes[2], 1);
1689 // Successfully update the monitor on the 1<->2 channel, but the 0<->1 channel should still be
1690 // paused, so forward shouldn't succeed until we call channel_monitor_updated().
1691 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()));
1693 let mut events = nodes[2].node.get_and_clear_pending_msg_events();
1694 assert_eq!(events.len(), 1);
1695 let payment_event = SendEvent::from_event(events.pop().unwrap());
1696 nodes[1].node.handle_update_add_htlc(&nodes[2].node.get_our_node_id(), &payment_event.msgs[0]);
1697 let events = nodes[1].node.get_and_clear_pending_msg_events();
1698 assert_eq!(events.len(), 0);
1699 commitment_signed_dance!(nodes[1], nodes[2], payment_event.commitment_msg, false, true);
1701 let (_, payment_hash_3, payment_secret_3) = get_payment_preimage_hash!(nodes[0]);
1702 nodes[2].node.send_payment(&route, payment_hash_3, &Some(payment_secret_3)).unwrap();
1703 check_added_monitors!(nodes[2], 1);
1705 let mut events = nodes[2].node.get_and_clear_pending_msg_events();
1706 assert_eq!(events.len(), 1);
1707 let payment_event = SendEvent::from_event(events.pop().unwrap());
1708 nodes[1].node.handle_update_add_htlc(&nodes[2].node.get_our_node_id(), &payment_event.msgs[0]);
1709 let events = nodes[1].node.get_and_clear_pending_msg_events();
1710 assert_eq!(events.len(), 0);
1711 commitment_signed_dance!(nodes[1], nodes[2], payment_event.commitment_msg, false, true);
1713 // Now restore monitor updating on the 0<->1 channel and claim the funds on B.
1714 let (outpoint, latest_update) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_1.2).unwrap().clone();
1715 nodes[1].node.channel_monitor_updated(&outpoint, latest_update);
1716 check_added_monitors!(nodes[1], 0);
1718 let bs_fulfill_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1719 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_fulfill_update.update_fulfill_htlcs[0]);
1720 commitment_signed_dance!(nodes[0], nodes[1], bs_fulfill_update.commitment_signed, false);
1721 expect_payment_sent!(nodes[0], payment_preimage_1);
1723 // Get the payment forwards, note that they were batched into one commitment update.
1724 expect_pending_htlcs_forwardable!(nodes[1]);
1725 check_added_monitors!(nodes[1], 1);
1726 let bs_forward_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1727 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &bs_forward_update.update_add_htlcs[0]);
1728 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &bs_forward_update.update_add_htlcs[1]);
1729 commitment_signed_dance!(nodes[0], nodes[1], bs_forward_update.commitment_signed, false);
1730 expect_pending_htlcs_forwardable!(nodes[0]);
1732 let events = nodes[0].node.get_and_clear_pending_events();
1733 assert_eq!(events.len(), 2);
1735 Event::PaymentReceived { ref payment_hash, ref purpose, amt } => {
1736 assert_eq!(payment_hash_2, *payment_hash);
1737 assert_eq!(1_000_000, amt);
1739 PaymentPurpose::InvoicePayment { payment_preimage, payment_secret, .. } => {
1740 assert!(payment_preimage.is_none());
1741 assert_eq!(payment_secret_2, *payment_secret);
1743 _ => panic!("expected PaymentPurpose::InvoicePayment")
1746 _ => panic!("Unexpected event"),
1749 Event::PaymentReceived { ref payment_hash, ref purpose, amt } => {
1750 assert_eq!(payment_hash_3, *payment_hash);
1751 assert_eq!(1_000_000, amt);
1753 PaymentPurpose::InvoicePayment { payment_preimage, payment_secret, .. } => {
1754 assert!(payment_preimage.is_none());
1755 assert_eq!(payment_secret_3, *payment_secret);
1757 _ => panic!("expected PaymentPurpose::InvoicePayment")
1760 _ => panic!("Unexpected event"),
1765 fn test_monitor_update_on_pending_forwards() {
1766 // Basic test for monitor update failures when processing pending HTLC fail/add forwards.
1767 // We do this with a simple 3-node network, sending a payment from A to C and one from C to A.
1768 // The payment from A to C will be failed by C and pending a back-fail to A, while the payment
1769 // from C to A will be pending a forward to A.
1770 let chanmon_cfgs = create_chanmon_cfgs(3);
1771 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1772 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1773 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1774 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
1775 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
1776 let logger = test_utils::TestLogger::new();
1778 // Rebalance a bit so that we can send backwards from 3 to 1.
1779 send_payment(&nodes[0], &[&nodes[1], &nodes[2]], 5000000);
1781 let (_, payment_hash_1, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1000000);
1782 assert!(nodes[2].node.fail_htlc_backwards(&payment_hash_1));
1783 expect_pending_htlcs_forwardable!(nodes[2]);
1784 check_added_monitors!(nodes[2], 1);
1786 let cs_fail_update = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
1787 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &cs_fail_update.update_fail_htlcs[0]);
1788 commitment_signed_dance!(nodes[1], nodes[2], cs_fail_update.commitment_signed, true, true);
1789 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1791 let (payment_preimage_2, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[0]);
1793 let net_graph_msg_handler = &nodes[2].net_graph_msg_handler;
1794 let route = get_route(&nodes[2].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
1795 nodes[2].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
1796 check_added_monitors!(nodes[2], 1);
1799 let mut events = nodes[2].node.get_and_clear_pending_msg_events();
1800 assert_eq!(events.len(), 1);
1801 let payment_event = SendEvent::from_event(events.pop().unwrap());
1802 nodes[1].node.handle_update_add_htlc(&nodes[2].node.get_our_node_id(), &payment_event.msgs[0]);
1803 commitment_signed_dance!(nodes[1], nodes[2], payment_event.commitment_msg, false);
1805 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
1806 expect_pending_htlcs_forwardable!(nodes[1]);
1807 check_added_monitors!(nodes[1], 1);
1808 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1809 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Failed to update ChannelMonitor".to_string(), 1);
1811 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()));
1812 let (outpoint, latest_update) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_1.2).unwrap().clone();
1813 nodes[1].node.channel_monitor_updated(&outpoint, latest_update);
1814 check_added_monitors!(nodes[1], 0);
1816 let bs_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1817 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.update_fail_htlcs[0]);
1818 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.update_add_htlcs[0]);
1819 commitment_signed_dance!(nodes[0], nodes[1], bs_updates.commitment_signed, false, true);
1821 let events = nodes[0].node.get_and_clear_pending_events();
1822 assert_eq!(events.len(), 2);
1823 if let Event::PaymentFailed { payment_hash, rejected_by_dest, .. } = events[0] {
1824 assert_eq!(payment_hash, payment_hash_1);
1825 assert!(rejected_by_dest);
1826 } else { panic!("Unexpected event!"); }
1828 Event::PendingHTLCsForwardable { .. } => { },
1829 _ => panic!("Unexpected event"),
1831 nodes[0].node.process_pending_htlc_forwards();
1832 expect_payment_received!(nodes[0], payment_hash_2, payment_secret_2, 1000000);
1834 claim_payment(&nodes[2], &[&nodes[1], &nodes[0]], payment_preimage_2);
1838 fn monitor_update_claim_fail_no_response() {
1839 // Test for claim_funds resulting in both a monitor update failure and no message response (due
1840 // to channel being AwaitingRAA).
1841 // Backported from chanmon_fail_consistency fuzz tests as an unmerged version of the handling
1843 let chanmon_cfgs = create_chanmon_cfgs(2);
1844 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1845 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1846 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1847 let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
1848 let logger = test_utils::TestLogger::new();
1850 // Forward a payment for B to claim
1851 let (payment_preimage_1, payment_hash_1, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
1853 // Now start forwarding a second payment, skipping the last RAA so B is in AwaitingRAA
1854 let (payment_preimage_2, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(nodes[1]);
1856 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1857 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
1858 nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
1859 check_added_monitors!(nodes[0], 1);
1862 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1863 assert_eq!(events.len(), 1);
1864 let payment_event = SendEvent::from_event(events.pop().unwrap());
1865 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
1866 let as_raa = commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false, true, false, true);
1868 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
1869 assert!(nodes[1].node.claim_funds(payment_preimage_1));
1870 check_added_monitors!(nodes[1], 1);
1871 let events = nodes[1].node.get_and_clear_pending_msg_events();
1872 assert_eq!(events.len(), 0);
1873 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Temporary failure claiming HTLC, treating as success: Failed to update ChannelMonitor".to_string(), 1);
1875 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()));
1876 let (outpoint, latest_update) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
1877 nodes[1].node.channel_monitor_updated(&outpoint, latest_update);
1878 check_added_monitors!(nodes[1], 0);
1879 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1881 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
1882 check_added_monitors!(nodes[1], 1);
1883 expect_pending_htlcs_forwardable!(nodes[1]);
1884 expect_payment_received!(nodes[1], payment_hash_2, payment_secret_2, 1000000);
1886 let bs_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1887 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.update_fulfill_htlcs[0]);
1888 commitment_signed_dance!(nodes[0], nodes[1], bs_updates.commitment_signed, false);
1890 let events = nodes[0].node.get_and_clear_pending_events();
1891 assert_eq!(events.len(), 1);
1893 Event::PaymentSent { ref payment_preimage, ref payment_hash } => {
1894 assert_eq!(*payment_preimage, payment_preimage_1);
1895 assert_eq!(*payment_hash, payment_hash_1);
1897 _ => panic!("Unexpected event"),
1900 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2);
1903 // confirm_a_first and restore_b_before_conf are wholly unrelated to earlier bools and
1904 // restore_b_before_conf has no meaning if !confirm_a_first
1905 fn do_during_funding_monitor_fail(confirm_a_first: bool, restore_b_before_conf: bool) {
1906 // Test that if the monitor update generated by funding_transaction_generated fails we continue
1907 // the channel setup happily after the update is restored.
1908 let chanmon_cfgs = create_chanmon_cfgs(2);
1909 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1910 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1911 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1913 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 43, None).unwrap();
1914 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()));
1915 nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id()));
1917 let (temporary_channel_id, funding_tx, funding_output) = create_funding_transaction(&nodes[0], 100000, 43);
1919 nodes[0].node.funding_transaction_generated(&temporary_channel_id, funding_tx.clone()).unwrap();
1920 check_added_monitors!(nodes[0], 0);
1922 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
1923 let funding_created_msg = get_event_msg!(nodes[0], MessageSendEvent::SendFundingCreated, nodes[1].node.get_our_node_id());
1924 let channel_id = OutPoint { txid: funding_created_msg.funding_txid, index: funding_created_msg.funding_output_index }.to_channel_id();
1925 nodes[1].node.handle_funding_created(&nodes[0].node.get_our_node_id(), &funding_created_msg);
1926 check_added_monitors!(nodes[1], 1);
1928 *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
1929 nodes[0].node.handle_funding_signed(&nodes[1].node.get_our_node_id(), &get_event_msg!(nodes[1], MessageSendEvent::SendFundingSigned, nodes[0].node.get_our_node_id()));
1930 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1931 nodes[0].logger.assert_log("lightning::ln::channelmanager".to_string(), "Failed to update ChannelMonitor".to_string(), 1);
1932 check_added_monitors!(nodes[0], 1);
1933 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
1934 *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()));
1935 let (outpoint, latest_update) = nodes[0].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
1936 nodes[0].node.channel_monitor_updated(&outpoint, latest_update);
1937 check_added_monitors!(nodes[0], 0);
1939 let events = nodes[0].node.get_and_clear_pending_events();
1940 assert_eq!(events.len(), 0);
1941 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
1942 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0)[0].txid(), funding_output.txid);
1944 if confirm_a_first {
1945 confirm_transaction(&nodes[0], &funding_tx);
1946 nodes[1].node.handle_funding_locked(&nodes[0].node.get_our_node_id(), &get_event_msg!(nodes[0], MessageSendEvent::SendFundingLocked, nodes[1].node.get_our_node_id()));
1948 assert!(!restore_b_before_conf);
1949 confirm_transaction(&nodes[1], &funding_tx);
1950 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1953 // Make sure nodes[1] isn't stupid enough to re-send the FundingLocked on reconnect
1954 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
1955 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
1956 reconnect_nodes(&nodes[0], &nodes[1], (false, confirm_a_first), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
1957 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1958 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1960 if !restore_b_before_conf {
1961 confirm_transaction(&nodes[1], &funding_tx);
1962 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1963 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
1966 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()));
1967 let (outpoint, latest_update) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
1968 nodes[1].node.channel_monitor_updated(&outpoint, latest_update);
1969 check_added_monitors!(nodes[1], 0);
1971 let (channel_id, (announcement, as_update, bs_update)) = if !confirm_a_first {
1972 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()));
1974 confirm_transaction(&nodes[0], &funding_tx);
1975 let (funding_locked, channel_id) = create_chan_between_nodes_with_value_confirm_second(&nodes[1], &nodes[0]);
1976 (channel_id, create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_locked))
1978 if restore_b_before_conf {
1979 confirm_transaction(&nodes[1], &funding_tx);
1981 let (funding_locked, channel_id) = create_chan_between_nodes_with_value_confirm_second(&nodes[0], &nodes[1]);
1982 (channel_id, create_chan_between_nodes_with_value_b(&nodes[1], &nodes[0], &funding_locked))
1984 for node in nodes.iter() {
1985 assert!(node.net_graph_msg_handler.handle_channel_announcement(&announcement).unwrap());
1986 node.net_graph_msg_handler.handle_channel_update(&as_update).unwrap();
1987 node.net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
1990 send_payment(&nodes[0], &[&nodes[1]], 8000000);
1991 close_channel(&nodes[0], &nodes[1], &channel_id, funding_tx, true);
1995 fn during_funding_monitor_fail() {
1996 do_during_funding_monitor_fail(true, true);
1997 do_during_funding_monitor_fail(true, false);
1998 do_during_funding_monitor_fail(false, false);
2002 fn test_path_paused_mpp() {
2003 // Simple test of sending a multi-part payment where one path is currently blocked awaiting
2005 let chanmon_cfgs = create_chanmon_cfgs(4);
2006 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
2007 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
2008 let mut nodes = create_network(4, &node_cfgs, &node_chanmgrs);
2010 let chan_1_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
2011 let (chan_2_ann, _, chan_2_id, _) = create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known());
2012 let chan_3_id = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
2013 let chan_4_id = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
2014 let logger = test_utils::TestLogger::new();
2016 let (payment_preimage, payment_hash, payment_secret) = get_payment_preimage_hash!(&nodes[3]);
2017 let mut route = get_route(&nodes[0].node.get_our_node_id(), &nodes[0].net_graph_msg_handler.network_graph, &nodes[3].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
2019 // Set us up to take multiple routes, one 0 -> 1 -> 3 and one 0 -> 2 -> 3:
2020 let path = route.paths[0].clone();
2021 route.paths.push(path);
2022 route.paths[0][0].pubkey = nodes[1].node.get_our_node_id();
2023 route.paths[0][0].short_channel_id = chan_1_id;
2024 route.paths[0][1].short_channel_id = chan_3_id;
2025 route.paths[1][0].pubkey = nodes[2].node.get_our_node_id();
2026 route.paths[1][0].short_channel_id = chan_2_ann.contents.short_channel_id;
2027 route.paths[1][1].short_channel_id = chan_4_id;
2029 // Set it so that the first monitor update (for the path 0 -> 1 -> 3) succeeds, but the second
2030 // (for the path 0 -> 2 -> 3) fails.
2031 *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()));
2032 *nodes[0].chain_monitor.next_update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
2034 // Now check that we get the right return value, indicating that the first path succeeded but
2035 // the second got a MonitorUpdateFailed err. This implies PaymentSendFailure::PartialFailure as
2036 // some paths succeeded, preventing retry.
2037 if let Err(PaymentSendFailure::PartialFailure(results)) = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)) {
2038 assert_eq!(results.len(), 2);
2039 if let Ok(()) = results[0] {} else { panic!(); }
2040 if let Err(APIError::MonitorUpdateFailed) = results[1] {} else { panic!(); }
2041 } else { panic!(); }
2042 check_added_monitors!(nodes[0], 2);
2043 *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()));
2045 // Pass the first HTLC of the payment along to nodes[3].
2046 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
2047 assert_eq!(events.len(), 1);
2048 pass_along_path(&nodes[0], &[&nodes[1], &nodes[3]], 0, payment_hash.clone(), Some(payment_secret), events.pop().unwrap(), false, None);
2050 // And check that, after we successfully update the monitor for chan_2 we can pass the second
2051 // HTLC along to nodes[3] and claim the whole payment back to nodes[0].
2052 let (outpoint, latest_update) = nodes[0].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_2_id).unwrap().clone();
2053 nodes[0].node.channel_monitor_updated(&outpoint, latest_update);
2054 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
2055 assert_eq!(events.len(), 1);
2056 pass_along_path(&nodes[0], &[&nodes[2], &nodes[3]], 200_000, payment_hash.clone(), Some(payment_secret), events.pop().unwrap(), true, None);
2058 claim_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], false, payment_preimage);
2062 fn test_pending_update_fee_ack_on_reconnect() {
2063 // In early versions of our automated fee update patch, nodes did not correctly use the
2064 // previous channel feerate after sending an undelivered revoke_and_ack when re-sending an
2065 // undelivered commitment_signed.
2067 // B sends A new HTLC + CS, not delivered
2068 // A sends B update_fee + CS
2069 // B receives the CS and sends RAA, previously causing B to lock in the new feerate
2071 // B resends initial CS, using the original fee
2073 let chanmon_cfgs = create_chanmon_cfgs(2);
2074 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2075 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2076 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2078 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2079 send_payment(&nodes[0], &[&nodes[1]], 100_000_00);
2081 let (payment_preimage, payment_hash, payment_secret) = get_payment_preimage_hash!(&nodes[0]);
2082 let route = get_route(&nodes[1].node.get_our_node_id(), &nodes[1].net_graph_msg_handler.network_graph,
2083 &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 1_000_000, TEST_FINAL_CLTV, nodes[1].logger).unwrap();
2084 nodes[1].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
2085 check_added_monitors!(nodes[1], 1);
2086 let bs_initial_send_msgs = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
2087 // bs_initial_send_msgs are not delivered until they are re-generated after reconnect
2090 let mut feerate_lock = chanmon_cfgs[0].fee_estimator.sat_per_kw.lock().unwrap();
2093 nodes[0].node.timer_tick_occurred();
2094 check_added_monitors!(nodes[0], 1);
2095 let as_update_fee_msgs = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2096 assert!(as_update_fee_msgs.update_fee.is_some());
2098 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), as_update_fee_msgs.update_fee.as_ref().unwrap());
2099 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_update_fee_msgs.commitment_signed);
2100 check_added_monitors!(nodes[1], 1);
2101 let bs_first_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2102 // bs_first_raa is not delivered until it is re-generated after reconnect
2104 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
2105 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
2107 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::known() });
2108 let as_connect_msg = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
2109 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::known() });
2110 let bs_connect_msg = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
2112 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &as_connect_msg);
2113 let bs_resend_msgs = nodes[1].node.get_and_clear_pending_msg_events();
2114 assert_eq!(bs_resend_msgs.len(), 3);
2115 if let MessageSendEvent::UpdateHTLCs { ref updates, .. } = bs_resend_msgs[0] {
2116 assert_eq!(*updates, bs_initial_send_msgs);
2117 } else { panic!(); }
2118 if let MessageSendEvent::SendRevokeAndACK { ref msg, .. } = bs_resend_msgs[1] {
2119 assert_eq!(*msg, bs_first_raa);
2120 } else { panic!(); }
2121 if let MessageSendEvent::SendChannelUpdate { .. } = bs_resend_msgs[2] { } else { panic!(); }
2123 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &bs_connect_msg);
2124 get_event_msg!(nodes[0], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id());
2126 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &bs_initial_send_msgs.update_add_htlcs[0]);
2127 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_initial_send_msgs.commitment_signed);
2128 check_added_monitors!(nodes[0], 1);
2129 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()));
2130 check_added_monitors!(nodes[1], 1);
2131 let bs_second_cs = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()).commitment_signed;
2133 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_first_raa);
2134 check_added_monitors!(nodes[0], 1);
2135 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()).commitment_signed);
2136 check_added_monitors!(nodes[1], 1);
2137 let bs_third_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2139 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_cs);
2140 check_added_monitors!(nodes[0], 1);
2141 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_third_raa);
2142 check_added_monitors!(nodes[0], 1);
2144 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()));
2145 check_added_monitors!(nodes[1], 1);
2147 expect_pending_htlcs_forwardable!(nodes[0]);
2148 expect_payment_received!(nodes[0], payment_hash, payment_secret, 1_000_000);
2150 claim_payment(&nodes[1], &[&nodes[0]], payment_preimage);
2153 fn do_update_fee_resend_test(deliver_update: bool, parallel_updates: bool) {
2154 // In early versions we did not handle resending of update_fee on reconnect correctly. The
2155 // chanmon_consistency fuzz target, of course, immediately found it, but we test a few cases
2157 let chanmon_cfgs = create_chanmon_cfgs(2);
2158 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2159 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2160 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2162 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2163 send_payment(&nodes[0], &[&nodes[1]], 1000);
2166 let mut feerate_lock = chanmon_cfgs[0].fee_estimator.sat_per_kw.lock().unwrap();
2167 *feerate_lock += 20;
2169 nodes[0].node.timer_tick_occurred();
2170 check_added_monitors!(nodes[0], 1);
2171 let update_msgs = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2172 assert!(update_msgs.update_fee.is_some());
2174 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msgs.update_fee.as_ref().unwrap());
2177 if parallel_updates {
2179 let mut feerate_lock = chanmon_cfgs[0].fee_estimator.sat_per_kw.lock().unwrap();
2180 *feerate_lock += 20;
2182 nodes[0].node.timer_tick_occurred();
2183 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2186 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
2187 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
2189 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::known() });
2190 let as_connect_msg = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
2191 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::known() });
2192 let bs_connect_msg = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
2194 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &as_connect_msg);
2195 get_event_msg!(nodes[1], MessageSendEvent::SendChannelUpdate, nodes[0].node.get_our_node_id());
2196 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2198 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &bs_connect_msg);
2199 let mut as_reconnect_msgs = nodes[0].node.get_and_clear_pending_msg_events();
2200 assert_eq!(as_reconnect_msgs.len(), 2);
2201 if let MessageSendEvent::SendChannelUpdate { .. } = as_reconnect_msgs.pop().unwrap() {} else { panic!(); }
2202 let update_msgs = if let MessageSendEvent::UpdateHTLCs { updates, .. } = as_reconnect_msgs.pop().unwrap()
2203 { updates } else { panic!(); };
2204 assert!(update_msgs.update_fee.is_some());
2205 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msgs.update_fee.as_ref().unwrap());
2206 if parallel_updates {
2207 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &update_msgs.commitment_signed);
2208 check_added_monitors!(nodes[1], 1);
2209 let (bs_first_raa, bs_first_cs) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
2210 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_first_raa);
2211 check_added_monitors!(nodes[0], 1);
2212 let as_second_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2214 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_first_cs);
2215 check_added_monitors!(nodes[0], 1);
2216 let as_first_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2218 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), as_second_update.update_fee.as_ref().unwrap());
2219 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_second_update.commitment_signed);
2220 check_added_monitors!(nodes[1], 1);
2221 let bs_second_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2223 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_first_raa);
2224 let bs_second_cs = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
2225 check_added_monitors!(nodes[1], 1);
2227 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_raa);
2228 check_added_monitors!(nodes[0], 1);
2230 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_cs.commitment_signed);
2231 check_added_monitors!(nodes[0], 1);
2232 let as_second_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2234 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_second_raa);
2235 check_added_monitors!(nodes[1], 1);
2237 commitment_signed_dance!(nodes[1], nodes[0], update_msgs.commitment_signed, false);
2240 send_payment(&nodes[0], &[&nodes[1]], 1000);
2243 fn update_fee_resend_test() {
2244 do_update_fee_resend_test(false, false);
2245 do_update_fee_resend_test(true, false);
2246 do_update_fee_resend_test(false, true);
2247 do_update_fee_resend_test(true, true);
2250 fn do_channel_holding_cell_serialize(disconnect: bool, reload_a: bool) {
2251 // Tests that, when we serialize a channel with AddHTLC entries in the holding cell, we
2252 // properly free them on reconnect. We previously failed such HTLCs upon serialization, but
2253 // that behavior was both somewhat unexpected and also broken (there was a debug assertion
2254 // which failed in such a case).
2255 let chanmon_cfgs = create_chanmon_cfgs(2);
2256 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2257 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2258 let persister: test_utils::TestPersister;
2259 let new_chain_monitor: test_utils::TestChainMonitor;
2260 let nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
2261 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2263 let chan_id = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 15_000_000, 7_000_000_000, InitFeatures::known(), InitFeatures::known()).2;
2264 let (payment_preimage_1, payment_hash_1, payment_secret_1) = get_payment_preimage_hash!(&nodes[1]);
2265 let (payment_preimage_2, payment_hash_2, payment_secret_2) = get_payment_preimage_hash!(&nodes[1]);
2267 // Do a really complicated dance to get an HTLC into the holding cell, with MonitorUpdateFailed
2268 // set but AwaitingRemoteRevoke unset. When this test was written, any attempts to send an HTLC
2269 // while MonitorUpdateFailed is set are immediately failed-backwards. Thus, the only way to get
2270 // an AddHTLC into the holding cell is to add it while AwaitingRemoteRevoke is set but
2271 // MonitorUpdateFailed is unset, and then swap the flags.
2274 // a) routing a payment from node B to node A,
2275 // b) sending a payment from node A to node B without delivering any of the generated messages,
2276 // putting node A in AwaitingRemoteRevoke,
2277 // c) sending a second payment from node A to node B, which is immediately placed in the
2279 // d) claiming the first payment from B, allowing us to fail the monitor update which occurs
2280 // when we try to persist the payment preimage,
2281 // e) delivering A's commitment_signed from (b) and the resulting B revoke_and_ack message,
2282 // clearing AwaitingRemoteRevoke on node A.
2284 // Note that because, at the end, MonitorUpdateFailed is still set, the HTLC generated in (c)
2285 // will not be freed from the holding cell.
2286 let (payment_preimage_0, _, _) = route_payment(&nodes[1], &[&nodes[0]], 100000);
2289 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
2290 get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[1].node.get_our_node_id(), None, None, &Vec::new(), 100000, TEST_FINAL_CLTV, nodes[0].logger).unwrap()
2293 nodes[0].node.send_payment(&route, payment_hash_1, &Some(payment_secret_1)).unwrap();
2294 check_added_monitors!(nodes[0], 1);
2295 let send = SendEvent::from_node(&nodes[0]);
2296 assert_eq!(send.msgs.len(), 1);
2298 nodes[0].node.send_payment(&route, payment_hash_2, &Some(payment_secret_2)).unwrap();
2299 check_added_monitors!(nodes[0], 0);
2301 *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
2302 assert!(nodes[0].node.claim_funds(payment_preimage_0));
2303 check_added_monitors!(nodes[0], 1);
2305 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send.msgs[0]);
2306 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send.commitment_msg);
2307 check_added_monitors!(nodes[1], 1);
2309 let (raa, cs) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
2311 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &raa);
2312 check_added_monitors!(nodes[0], 1);
2315 // Optionally reload nodes[0] entirely through a serialization roundtrip, otherwise just
2316 // disconnect the peers. Note that the fuzzer originally found this issue because
2317 // deserializing a ChannelManager in this state causes an assertion failure.
2319 let nodes_0_serialized = nodes[0].node.encode();
2320 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
2321 nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter().next().unwrap().1.write(&mut chan_0_monitor_serialized).unwrap();
2323 persister = test_utils::TestPersister::new();
2324 let keys_manager = &chanmon_cfgs[0].keys_manager;
2325 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);
2326 nodes[0].chain_monitor = &new_chain_monitor;
2327 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
2328 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
2329 &mut chan_0_monitor_read, keys_manager).unwrap();
2330 assert!(chan_0_monitor_read.is_empty());
2332 let mut nodes_0_read = &nodes_0_serialized[..];
2333 let config = UserConfig::default();
2334 nodes_0_deserialized = {
2335 let mut channel_monitors = HashMap::new();
2336 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
2337 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
2338 default_config: config,
2340 fee_estimator: node_cfgs[0].fee_estimator,
2341 chain_monitor: nodes[0].chain_monitor,
2342 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
2343 logger: nodes[0].logger,
2347 nodes[0].node = &nodes_0_deserialized;
2348 assert!(nodes_0_read.is_empty());
2350 nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0.clone(), chan_0_monitor).unwrap();
2351 check_added_monitors!(nodes[0], 1);
2353 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
2355 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
2357 // Now reconnect the two
2358 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
2359 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
2360 assert_eq!(reestablish_1.len(), 1);
2361 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
2362 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
2363 assert_eq!(reestablish_2.len(), 1);
2365 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
2366 let resp_1 = handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
2367 check_added_monitors!(nodes[1], 0);
2369 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
2370 let resp_0 = handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
2372 assert!(resp_0.0.is_none());
2373 assert!(resp_0.1.is_none());
2374 assert!(resp_0.2.is_none());
2375 assert!(resp_1.0.is_none());
2376 assert!(resp_1.1.is_none());
2378 // Check that the freshly-generated cs is equal to the original (which we will deliver in a
2380 if let Some(pending_cs) = resp_1.2 {
2381 assert!(pending_cs.update_add_htlcs.is_empty());
2382 assert!(pending_cs.update_fail_htlcs.is_empty());
2383 assert!(pending_cs.update_fulfill_htlcs.is_empty());
2384 assert_eq!(pending_cs.commitment_signed, cs);
2385 } else { panic!(); }
2387 // There should be no monitor updates as we are still pending awaiting a failed one.
2388 check_added_monitors!(nodes[0], 0);
2389 check_added_monitors!(nodes[1], 0);
2392 // If we finish updating the monitor, we should free the holding cell right away (this did
2393 // not occur prior to #756).
2394 *nodes[0].chain_monitor.update_ret.lock().unwrap() = None;
2395 let (funding_txo, mon_id) = nodes[0].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_id).unwrap().clone();
2396 nodes[0].node.channel_monitor_updated(&funding_txo, mon_id);
2398 // New outbound messages should be generated immediately upon a call to
2399 // get_and_clear_pending_msg_events (but not before).
2400 check_added_monitors!(nodes[0], 0);
2401 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
2402 check_added_monitors!(nodes[0], 1);
2403 assert_eq!(events.len(), 1);
2405 // Deliver the pending in-flight CS
2406 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &cs);
2407 check_added_monitors!(nodes[0], 1);
2409 let commitment_msg = match events.pop().unwrap() {
2410 MessageSendEvent::UpdateHTLCs { node_id, updates } => {
2411 assert_eq!(node_id, nodes[1].node.get_our_node_id());
2412 assert!(updates.update_fail_htlcs.is_empty());
2413 assert!(updates.update_fail_malformed_htlcs.is_empty());
2414 assert!(updates.update_fee.is_none());
2415 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
2416 nodes[1].node.handle_update_fulfill_htlc(&nodes[0].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
2417 expect_payment_sent!(nodes[1], payment_preimage_0);
2418 assert_eq!(updates.update_add_htlcs.len(), 1);
2419 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
2420 updates.commitment_signed
2422 _ => panic!("Unexpected event type!"),
2425 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &commitment_msg);
2426 check_added_monitors!(nodes[1], 1);
2428 let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2429 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack);
2430 expect_pending_htlcs_forwardable!(nodes[1]);
2431 expect_payment_received!(nodes[1], payment_hash_1, payment_secret_1, 100000);
2432 check_added_monitors!(nodes[1], 1);
2434 commitment_signed_dance!(nodes[1], nodes[0], (), false, true, false);
2436 expect_pending_htlcs_forwardable!(nodes[1]);
2437 expect_payment_received!(nodes[1], payment_hash_2, payment_secret_2, 100000);
2439 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1);
2440 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2);
2443 fn channel_holding_cell_serialize() {
2444 do_channel_holding_cell_serialize(true, true);
2445 do_channel_holding_cell_serialize(true, false);
2446 do_channel_holding_cell_serialize(false, true); // last arg doesn't matter
2449 #[derive(PartialEq)]
2450 enum HTLCStatusAtDupClaim {
2455 fn do_test_reconnect_dup_htlc_claims(htlc_status: HTLCStatusAtDupClaim, second_fails: bool) {
2456 // When receiving an update_fulfill_htlc message, we immediately forward the claim backwards
2457 // along the payment path before waiting for a full commitment_signed dance. This is great, but
2458 // can cause duplicative claims if a node sends an update_fulfill_htlc message, disconnects,
2459 // reconnects, and then has to re-send its update_fulfill_htlc message again.
2460 // In previous code, we didn't handle the double-claim correctly, spuriously closing the
2461 // channel on which the inbound HTLC was received.
2462 let chanmon_cfgs = create_chanmon_cfgs(3);
2463 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
2464 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
2465 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
2467 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2468 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known()).2;
2470 let (payment_preimage, payment_hash, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100_000);
2472 let mut as_raa = None;
2473 if htlc_status == HTLCStatusAtDupClaim::HoldingCell {
2474 // In order to get the HTLC claim into the holding cell at nodes[1], we need nodes[1] to be
2475 // awaiting a remote revoke_and_ack from nodes[0].
2476 let (_, second_payment_hash, second_payment_secret) = get_payment_preimage_hash!(nodes[1]);
2477 let route = get_route(&nodes[0].node.get_our_node_id(), &nodes[0].net_graph_msg_handler.network_graph,
2478 &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 100_000, TEST_FINAL_CLTV, nodes[1].logger).unwrap();
2479 nodes[0].node.send_payment(&route, second_payment_hash, &Some(second_payment_secret)).unwrap();
2480 check_added_monitors!(nodes[0], 1);
2482 let send_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0));
2483 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_event.msgs[0]);
2484 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send_event.commitment_msg);
2485 check_added_monitors!(nodes[1], 1);
2487 let (bs_raa, bs_cs) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
2488 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
2489 check_added_monitors!(nodes[0], 1);
2490 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_cs);
2491 check_added_monitors!(nodes[0], 1);
2493 as_raa = Some(get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()));
2496 let fulfill_msg = msgs::UpdateFulfillHTLC {
2502 assert!(nodes[2].node.fail_htlc_backwards(&payment_hash));
2503 expect_pending_htlcs_forwardable!(nodes[2]);
2504 check_added_monitors!(nodes[2], 1);
2505 get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
2507 assert!(nodes[2].node.claim_funds(payment_preimage));
2508 check_added_monitors!(nodes[2], 1);
2509 let cs_updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
2510 assert_eq!(cs_updates.update_fulfill_htlcs.len(), 1);
2511 // Check that the message we're about to deliver matches the one generated:
2512 assert_eq!(fulfill_msg, cs_updates.update_fulfill_htlcs[0]);
2514 nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &fulfill_msg);
2515 expect_payment_forwarded!(nodes[1], Some(1000), false);
2516 check_added_monitors!(nodes[1], 1);
2518 let mut bs_updates = None;
2519 if htlc_status != HTLCStatusAtDupClaim::HoldingCell {
2520 bs_updates = Some(get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()));
2521 assert_eq!(bs_updates.as_ref().unwrap().update_fulfill_htlcs.len(), 1);
2522 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.as_ref().unwrap().update_fulfill_htlcs[0]);
2523 expect_payment_sent!(nodes[0], payment_preimage);
2524 if htlc_status == HTLCStatusAtDupClaim::Cleared {
2525 commitment_signed_dance!(nodes[0], nodes[1], &bs_updates.as_ref().unwrap().commitment_signed, false);
2528 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2531 nodes[1].node.peer_disconnected(&nodes[2].node.get_our_node_id(), false);
2532 nodes[2].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
2535 reconnect_nodes(&nodes[1], &nodes[2], (false, false), (0, 0), (0, 0), (1, 0), (0, 0), (0, 0), (false, false));
2536 expect_pending_htlcs_forwardable!(nodes[1]);
2538 reconnect_nodes(&nodes[1], &nodes[2], (false, false), (0, 0), (1, 0), (0, 0), (0, 0), (0, 0), (false, false));
2541 if htlc_status == HTLCStatusAtDupClaim::HoldingCell {
2542 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa.unwrap());
2543 check_added_monitors!(nodes[1], 1);
2544 expect_pending_htlcs_forwardable_ignore!(nodes[1]); // We finally receive the second payment, but don't claim it
2546 bs_updates = Some(get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()));
2547 assert_eq!(bs_updates.as_ref().unwrap().update_fulfill_htlcs.len(), 1);
2548 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.as_ref().unwrap().update_fulfill_htlcs[0]);
2549 expect_payment_sent!(nodes[0], payment_preimage);
2551 if htlc_status != HTLCStatusAtDupClaim::Cleared {
2552 commitment_signed_dance!(nodes[0], nodes[1], &bs_updates.as_ref().unwrap().commitment_signed, false);
2557 fn test_reconnect_dup_htlc_claims() {
2558 do_test_reconnect_dup_htlc_claims(HTLCStatusAtDupClaim::Received, false);
2559 do_test_reconnect_dup_htlc_claims(HTLCStatusAtDupClaim::HoldingCell, false);
2560 do_test_reconnect_dup_htlc_claims(HTLCStatusAtDupClaim::Cleared, false);
2561 do_test_reconnect_dup_htlc_claims(HTLCStatusAtDupClaim::Received, true);
2562 do_test_reconnect_dup_htlc_claims(HTLCStatusAtDupClaim::HoldingCell, true);
2563 do_test_reconnect_dup_htlc_claims(HTLCStatusAtDupClaim::Cleared, true);
2567 fn test_temporary_error_during_shutdown() {
2568 // Test that temporary failures when updating the monitor's shutdown script delay cooperative
2570 let mut config = test_default_channel_config();
2571 config.channel_options.commit_upfront_shutdown_pubkey = false;
2573 let chanmon_cfgs = create_chanmon_cfgs(2);
2574 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2575 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[Some(config), Some(config)]);
2576 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2578 let (_, _, channel_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2580 *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
2581 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
2583 nodes[0].node.close_channel(&channel_id).unwrap();
2584 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()));
2585 check_added_monitors!(nodes[1], 1);
2587 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()));
2588 check_added_monitors!(nodes[0], 1);
2590 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2592 *nodes[0].chain_monitor.update_ret.lock().unwrap() = None;
2593 *nodes[1].chain_monitor.update_ret.lock().unwrap() = None;
2595 let (outpoint, latest_update) = nodes[0].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
2596 nodes[0].node.channel_monitor_updated(&outpoint, latest_update);
2597 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id()));
2599 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2601 *nodes[1].chain_monitor.update_ret.lock().unwrap() = None;
2602 let (outpoint, latest_update) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
2603 nodes[1].node.channel_monitor_updated(&outpoint, latest_update);
2605 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &get_event_msg!(nodes[1], MessageSendEvent::SendClosingSigned, nodes[0].node.get_our_node_id()));
2606 let (_, closing_signed_a) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
2607 let txn_a = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
2609 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &closing_signed_a.unwrap());
2610 let (_, none_b) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
2611 assert!(none_b.is_none());
2612 let txn_b = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
2614 assert_eq!(txn_a, txn_b);
2615 assert_eq!(txn_a.len(), 1);
2616 check_spends!(txn_a[0], funding_tx);
2620 fn test_permanent_error_during_sending_shutdown() {
2621 // Test that permanent failures when updating the monitor's shutdown script result in a force
2622 // close when initiating a cooperative close.
2623 let mut config = test_default_channel_config();
2624 config.channel_options.commit_upfront_shutdown_pubkey = false;
2626 let chanmon_cfgs = create_chanmon_cfgs(2);
2627 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2628 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[Some(config), None]);
2629 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2631 let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
2632 *nodes[0].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::PermanentFailure));
2634 assert!(nodes[0].node.close_channel(&channel_id).is_ok());
2635 check_closed_broadcast!(nodes[0], true);
2636 check_added_monitors!(nodes[0], 2);
2640 fn test_permanent_error_during_handling_shutdown() {
2641 // Test that permanent failures when updating the monitor's shutdown script result in a force
2642 // close when handling a cooperative close.
2643 let mut config = test_default_channel_config();
2644 config.channel_options.commit_upfront_shutdown_pubkey = false;
2646 let chanmon_cfgs = create_chanmon_cfgs(2);
2647 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2648 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, Some(config)]);
2649 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2651 let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
2652 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::PermanentFailure));
2654 assert!(nodes[0].node.close_channel(&channel_id).is_ok());
2655 let shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
2656 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &shutdown);
2657 check_closed_broadcast!(nodes[1], true);
2658 check_added_monitors!(nodes[1], 2);
2662 fn double_temp_error() {
2663 // Test that it's OK to have multiple `ChainMonitor::update_channel` calls fail in a row.
2664 let chanmon_cfgs = create_chanmon_cfgs(2);
2665 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2666 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2667 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2669 let (_, _, channel_id, _) = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2671 let (payment_preimage_1, _, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
2672 let (payment_preimage_2, _, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
2674 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
2675 // `claim_funds` results in a ChannelMonitorUpdate.
2676 assert!(nodes[1].node.claim_funds(payment_preimage_1));
2677 check_added_monitors!(nodes[1], 1);
2678 let (funding_tx, latest_update_1) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
2680 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Err(ChannelMonitorUpdateErr::TemporaryFailure));
2681 // Previously, this would've panicked due to a double-call to `Channel::monitor_update_failed`,
2682 // which had some asserts that prevented it from being called twice.
2683 assert!(nodes[1].node.claim_funds(payment_preimage_2));
2684 check_added_monitors!(nodes[1], 1);
2685 *nodes[1].chain_monitor.update_ret.lock().unwrap() = Some(Ok(()));
2687 let (_, latest_update_2) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&channel_id).unwrap().clone();
2688 nodes[1].node.channel_monitor_updated(&funding_tx, latest_update_1);
2689 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2690 check_added_monitors!(nodes[1], 0);
2691 nodes[1].node.channel_monitor_updated(&funding_tx, latest_update_2);
2693 // Complete the first HTLC.
2694 let events = nodes[1].node.get_and_clear_pending_msg_events();
2695 assert_eq!(events.len(), 1);
2696 let (update_fulfill_1, commitment_signed_b1, node_id) = {
2698 &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 } } => {
2699 assert!(update_add_htlcs.is_empty());
2700 assert_eq!(update_fulfill_htlcs.len(), 1);
2701 assert!(update_fail_htlcs.is_empty());
2702 assert!(update_fail_malformed_htlcs.is_empty());
2703 assert!(update_fee.is_none());
2704 (update_fulfill_htlcs[0].clone(), commitment_signed.clone(), node_id.clone())
2706 _ => panic!("Unexpected event"),
2709 assert_eq!(node_id, nodes[0].node.get_our_node_id());
2710 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_1);
2711 check_added_monitors!(nodes[0], 0);
2712 expect_payment_sent!(nodes[0], payment_preimage_1);
2713 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed_b1);
2714 check_added_monitors!(nodes[0], 1);
2715 nodes[0].node.process_pending_htlc_forwards();
2716 let (raa_a1, commitment_signed_a1) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2717 check_added_monitors!(nodes[1], 0);
2718 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2719 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &raa_a1);
2720 check_added_monitors!(nodes[1], 1);
2721 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &commitment_signed_a1);
2722 check_added_monitors!(nodes[1], 1);
2724 // Complete the second HTLC.
2725 let ((update_fulfill_2, commitment_signed_b2), raa_b2) = {
2726 let events = nodes[1].node.get_and_clear_pending_msg_events();
2727 assert_eq!(events.len(), 2);
2729 MessageSendEvent::UpdateHTLCs { node_id, updates } => {
2730 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
2731 assert!(updates.update_add_htlcs.is_empty());
2732 assert!(updates.update_fail_htlcs.is_empty());
2733 assert!(updates.update_fail_malformed_htlcs.is_empty());
2734 assert!(updates.update_fee.is_none());
2735 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
2736 (updates.update_fulfill_htlcs[0].clone(), updates.commitment_signed.clone())
2738 _ => panic!("Unexpected event"),
2741 MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
2742 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
2745 _ => panic!("Unexpected event"),
2748 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &raa_b2);
2749 check_added_monitors!(nodes[0], 1);
2751 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_2);
2752 check_added_monitors!(nodes[0], 0);
2753 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2754 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed_b2, false);
2755 expect_payment_sent!(nodes[0], payment_preimage_2);