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 //! Further functional tests which test blockchain reorganizations.
12 use crate::chain::chaininterface::LowerBoundedFeeEstimator;
13 use crate::chain::channelmonitor::{ANTI_REORG_DELAY, LATENCY_GRACE_PERIOD_BLOCKS};
14 use crate::chain::transaction::OutPoint;
15 use crate::chain::Confirm;
16 use crate::events::{Event, MessageSendEventsProvider, ClosureReason, HTLCDestination, MessageSendEvent};
17 use crate::ln::msgs::{ChannelMessageHandler, Init};
18 use crate::util::test_utils;
19 use crate::util::ser::Writeable;
20 use crate::util::string::UntrustedString;
22 use bitcoin::blockdata::script::Builder;
23 use bitcoin::blockdata::opcodes;
24 use bitcoin::secp256k1::Secp256k1;
26 use crate::prelude::*;
28 use crate::ln::{functional_test_utils::*, ChannelId};
30 fn do_test_onchain_htlc_reorg(local_commitment: bool, claim: bool) {
31 // Our on-chain HTLC-claim learning has a few properties worth testing:
32 // * If an upstream HTLC is claimed with a preimage (both against our own commitment
33 // transaction our counterparty's), we claim it backwards immediately.
34 // * If an upstream HTLC is claimed with a timeout, we delay ANTI_REORG_DELAY before failing
35 // it backwards to ensure our counterparty can't claim with a preimage in a reorg.
37 // Here we test both properties in any combination based on the two bools passed in as
40 // If local_commitment is set, we first broadcast a local commitment containing an offered HTLC
41 // and an HTLC-Timeout tx, otherwise we broadcast a remote commitment containing a received
42 // HTLC and a local HTLC-Timeout tx spending it.
44 // We then either allow these transactions to confirm (if !claim) or we wait until one block
45 // before they otherwise would and reorg them out, confirming an HTLC-Success tx instead.
46 let chanmon_cfgs = create_chanmon_cfgs(3);
47 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
48 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
49 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
51 create_announced_chan_between_nodes(&nodes, 0, 1);
52 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
54 // Make sure all nodes are at the same starting height
55 connect_blocks(&nodes[0], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[0].best_block_info().1);
56 connect_blocks(&nodes[1], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[1].best_block_info().1);
57 connect_blocks(&nodes[2], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[2].best_block_info().1);
59 let (our_payment_preimage, our_payment_hash, ..) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1_000_000);
61 // Provide preimage to node 2 by claiming payment
62 nodes[2].node.claim_funds(our_payment_preimage);
63 expect_payment_claimed!(nodes[2], our_payment_hash, 1_000_000);
64 check_added_monitors!(nodes[2], 1);
65 get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
67 let claim_txn = if local_commitment {
68 // Broadcast node 1 commitment txn to broadcast the HTLC-Timeout
69 let node_1_commitment_txn = get_local_commitment_txn!(nodes[1], chan_2.2);
70 assert_eq!(node_1_commitment_txn.len(), 2); // 1 local commitment tx, 1 Outbound HTLC-Timeout
71 assert_eq!(node_1_commitment_txn[0].output.len(), 2); // to-self and Offered HTLC (to-remote/to-node-3 is dust)
72 check_spends!(node_1_commitment_txn[0], chan_2.3);
73 check_spends!(node_1_commitment_txn[1], node_1_commitment_txn[0]);
75 // Give node 2 node 1's transactions and get its response (claiming the HTLC instead).
76 connect_block(&nodes[2], &create_dummy_block(nodes[2].best_block_hash(), 42, node_1_commitment_txn.clone()));
77 check_added_monitors!(nodes[2], 1);
78 check_closed_broadcast!(nodes[2], true); // We should get a BroadcastChannelUpdate (and *only* a BroadcstChannelUpdate)
79 check_closed_event!(nodes[2], 1, ClosureReason::CommitmentTxConfirmed, [nodes[1].node.get_our_node_id()], 100000);
80 let node_2_commitment_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
81 assert_eq!(node_2_commitment_txn.len(), 1); // ChannelMonitor: 1 offered HTLC-Claim
82 check_spends!(node_2_commitment_txn[0], node_1_commitment_txn[0]);
84 // Make sure node 1's height is the same as the !local_commitment case
85 connect_blocks(&nodes[1], 1);
86 // Confirm node 1's commitment txn (and HTLC-Timeout) on node 1
87 connect_block(&nodes[1], &create_dummy_block(nodes[1].best_block_hash(), 42, node_1_commitment_txn.clone()));
89 // ...but return node 1's commitment tx in case claim is set and we're preparing to reorg
90 vec![node_1_commitment_txn[0].clone(), node_2_commitment_txn[0].clone()]
92 // Broadcast node 2 commitment txn
93 let mut node_2_commitment_txn = get_local_commitment_txn!(nodes[2], chan_2.2);
94 assert_eq!(node_2_commitment_txn.len(), 2); // 1 local commitment tx, 1 Received HTLC-Claim
95 assert_eq!(node_2_commitment_txn[0].output.len(), 2); // to-remote and Received HTLC (to-self is dust)
96 check_spends!(node_2_commitment_txn[0], chan_2.3);
97 check_spends!(node_2_commitment_txn[1], node_2_commitment_txn[0]);
99 // Give node 1 node 2's commitment transaction and get its response (timing the HTLC out)
100 mine_transaction(&nodes[1], &node_2_commitment_txn[0]);
101 connect_blocks(&nodes[1], TEST_FINAL_CLTV); // Confirm blocks until the HTLC expires
102 let node_1_commitment_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
103 assert_eq!(node_1_commitment_txn.len(), 1); // ChannelMonitor: 1 offered HTLC-Timeout
104 check_spends!(node_1_commitment_txn[0], node_2_commitment_txn[0]);
106 // Confirm node 1's HTLC-Timeout on node 1
107 mine_transaction(&nodes[1], &node_1_commitment_txn[0]);
108 // ...but return node 2's commitment tx (and claim) in case claim is set and we're preparing to reorg
109 vec![node_2_commitment_txn.pop().unwrap()]
111 check_added_monitors!(nodes[1], 1);
112 check_closed_broadcast!(nodes[1], true); // We should get a BroadcastChannelUpdate (and *only* a BroadcstChannelUpdate)
113 check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed, [nodes[2].node.get_our_node_id()], 100000);
114 // Connect ANTI_REORG_DELAY - 2 blocks, giving us a confirmation count of ANTI_REORG_DELAY - 1.
115 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 2);
116 check_added_monitors!(nodes[1], 0);
117 assert_eq!(nodes[1].node.get_and_clear_pending_events().len(), 0);
120 // Disconnect Node 1's HTLC-Timeout which was connected above
121 disconnect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
123 connect_block(&nodes[1], &create_dummy_block(nodes[1].best_block_hash(), 42, claim_txn));
125 // ChannelManager only polls chain::Watch::release_pending_monitor_events when we
126 // probe it for events, so we probe non-message events here (which should just be the
127 // PaymentForwarded event).
128 expect_payment_forwarded!(nodes[1], nodes[0], nodes[2], Some(1000), true, true);
130 // Confirm the timeout tx and check that we fail the HTLC backwards
131 connect_block(&nodes[1], &create_dummy_block(nodes[1].best_block_hash(), 42, Vec::new()));
132 expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[1], vec![HTLCDestination::NextHopChannel { node_id: Some(nodes[2].node.get_our_node_id()), channel_id: chan_2.2 }]);
135 check_added_monitors!(nodes[1], 1);
136 // Which should result in an immediate claim/fail of the HTLC:
137 let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
139 assert_eq!(htlc_updates.update_fulfill_htlcs.len(), 1);
140 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fulfill_htlcs[0]);
142 assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
143 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]);
145 commitment_signed_dance!(nodes[0], nodes[1], htlc_updates.commitment_signed, false, true);
147 expect_payment_sent!(nodes[0], our_payment_preimage);
149 expect_payment_failed_with_update!(nodes[0], our_payment_hash, false, chan_2.0.contents.short_channel_id, true);
154 fn test_onchain_htlc_claim_reorg_local_commitment() {
155 do_test_onchain_htlc_reorg(true, true);
158 fn test_onchain_htlc_timeout_delay_local_commitment() {
159 do_test_onchain_htlc_reorg(true, false);
162 fn test_onchain_htlc_claim_reorg_remote_commitment() {
163 do_test_onchain_htlc_reorg(false, true);
166 fn test_onchain_htlc_timeout_delay_remote_commitment() {
167 do_test_onchain_htlc_reorg(false, false);
171 fn test_counterparty_revoked_reorg() {
172 // Test what happens when a revoked counterparty transaction is broadcast but then reorg'd out
173 // of the main chain. Specifically, HTLCs in the latest commitment transaction which are not
174 // included in the revoked commitment transaction should not be considered failed, and should
175 // still be claim-from-able after the reorg.
176 let chanmon_cfgs = create_chanmon_cfgs(2);
177 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
178 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
179 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
181 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 500_000_000);
183 // Get the initial commitment transaction for broadcast, before any HTLCs are added at all.
184 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan.2);
185 assert_eq!(revoked_local_txn.len(), 1);
187 // Now add two HTLCs in each direction, one dust and one not.
188 route_payment(&nodes[0], &[&nodes[1]], 5_000_000);
189 route_payment(&nodes[0], &[&nodes[1]], 5_000);
190 let (payment_preimage_3, payment_hash_3, ..) = route_payment(&nodes[1], &[&nodes[0]], 4_000_000);
191 let payment_hash_4 = route_payment(&nodes[1], &[&nodes[0]], 4_000).1;
193 nodes[0].node.claim_funds(payment_preimage_3);
194 let _ = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
195 check_added_monitors!(nodes[0], 1);
196 expect_payment_claimed!(nodes[0], payment_hash_3, 4_000_000);
198 let mut unrevoked_local_txn = get_local_commitment_txn!(nodes[0], chan.2);
199 assert_eq!(unrevoked_local_txn.len(), 3); // commitment + 2 HTLC txn
200 // Sort the unrevoked transactions in reverse order, ie commitment tx, then HTLC 1 then HTLC 3
201 unrevoked_local_txn.sort_unstable_by_key(|tx| 1_000_000 - tx.output.iter().map(|outp| outp.value).sum::<u64>());
203 // Now mine A's old commitment transaction, which should close the channel, but take no action
204 // on any of the HTLCs, at least until we get six confirmations (which we won't get).
205 mine_transaction(&nodes[1], &revoked_local_txn[0]);
206 check_added_monitors!(nodes[1], 1);
207 check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed, [nodes[0].node.get_our_node_id()], 1000000);
208 check_closed_broadcast!(nodes[1], true);
210 // Connect up to one block before the revoked transaction would be considered final, then do a
211 // reorg that disconnects the full chain and goes up to the height at which the revoked
212 // transaction would be final.
213 let theoretical_conf_height = nodes[1].best_block_info().1 + ANTI_REORG_DELAY - 1;
214 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 2);
215 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
216 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
218 disconnect_all_blocks(&nodes[1]);
219 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
220 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
222 connect_blocks(&nodes[1], theoretical_conf_height);
223 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
224 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
226 // Now connect A's latest commitment transaction instead and resolve the HTLCs
227 mine_transaction(&nodes[1], &unrevoked_local_txn[0]);
228 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
229 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
231 // Connect the HTLC claim transaction for HTLC 3
232 mine_transaction(&nodes[1], &unrevoked_local_txn[2]);
233 expect_payment_sent(&nodes[1], payment_preimage_3, None, true, false);
234 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
236 // Connect blocks to confirm the unrevoked commitment transaction
237 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 2);
238 expect_payment_failed!(nodes[1], payment_hash_4, false);
241 fn do_test_unconf_chan(reload_node: bool, reorg_after_reload: bool, use_funding_unconfirmed: bool, connect_style: ConnectStyle) {
242 // After creating a chan between nodes, we disconnect all blocks previously seen to force a
243 // channel close on nodes[0] side. We also use this to provide very basic testing of logic
244 // around freeing background events which store monitor updates during block_[dis]connected.
245 let chanmon_cfgs = create_chanmon_cfgs(2);
246 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
248 let new_chain_monitor;
250 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
251 let nodes_0_deserialized;
253 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
254 *nodes[0].connect_style.borrow_mut() = connect_style;
256 let chan_conf_height = core::cmp::max(nodes[0].best_block_info().1 + 1, nodes[1].best_block_info().1 + 1);
257 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
260 let per_peer_state = nodes[0].node.per_peer_state.read().unwrap();
261 let peer_state = per_peer_state.get(&nodes[1].node.get_our_node_id()).unwrap().lock().unwrap();
262 assert_eq!(peer_state.channel_by_id.len(), 1);
263 assert_eq!(nodes[0].node.short_to_chan_info.read().unwrap().len(), 2);
266 assert_eq!(nodes[0].node.list_channels()[0].confirmations, Some(10));
267 assert_eq!(nodes[1].node.list_channels()[0].confirmations, Some(10));
269 if !reorg_after_reload {
270 if use_funding_unconfirmed {
271 let relevant_txids = nodes[0].node.get_relevant_txids();
272 assert_eq!(relevant_txids.len(), 1);
273 let block_hash_opt = relevant_txids[0].2;
274 let expected_hash = nodes[0].get_block_header(chan_conf_height).block_hash();
275 assert_eq!(relevant_txids[0].1, chan_conf_height);
276 assert_eq!(block_hash_opt, Some(expected_hash));
277 let txid = relevant_txids[0].0;
278 assert_eq!(txid, chan.3.txid());
279 nodes[0].node.transaction_unconfirmed(&txid);
280 assert_eq!(nodes[0].node.list_usable_channels().len(), 0);
281 } else if connect_style == ConnectStyle::FullBlockViaListen {
282 disconnect_blocks(&nodes[0], CHAN_CONFIRM_DEPTH - 1);
283 assert_eq!(nodes[0].node.list_usable_channels().len(), 1);
284 assert_eq!(nodes[0].node.list_channels()[0].confirmations, Some(1));
285 disconnect_blocks(&nodes[0], 1);
286 assert_eq!(nodes[0].node.list_usable_channels().len(), 0);
288 disconnect_all_blocks(&nodes[0]);
289 assert_eq!(nodes[0].node.list_usable_channels().len(), 0);
292 let relevant_txids = nodes[0].node.get_relevant_txids();
293 assert_eq!(relevant_txids.len(), 0);
296 let per_peer_state = nodes[0].node.per_peer_state.read().unwrap();
297 let peer_state = per_peer_state.get(&nodes[1].node.get_our_node_id()).unwrap().lock().unwrap();
298 assert_eq!(peer_state.channel_by_id.len(), 0);
299 assert_eq!(nodes[0].node.short_to_chan_info.read().unwrap().len(), 0);
304 // Since we currently have a background event pending, it's good to test that we survive a
305 // serialization roundtrip. Further, this tests the somewhat awkward edge-case of dropping
306 // the Channel object from the ChannelManager, but still having a monitor event pending for
307 // it when we go to deserialize, and then use the ChannelManager.
308 let nodes_0_serialized = nodes[0].node.encode();
309 let chan_0_monitor_serialized = get_monitor!(nodes[0], chan.2).encode();
311 reload_node!(nodes[0], *nodes[0].node.get_current_default_configuration(), &nodes_0_serialized, &[&chan_0_monitor_serialized], persister, new_chain_monitor, nodes_0_deserialized);
312 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
315 if reorg_after_reload {
316 if use_funding_unconfirmed {
317 let relevant_txids = nodes[0].node.get_relevant_txids();
318 assert_eq!(relevant_txids.len(), 1);
319 let block_hash_opt = relevant_txids[0].2;
320 let expected_hash = nodes[0].get_block_header(chan_conf_height).block_hash();
321 assert_eq!(chan_conf_height, relevant_txids[0].1);
322 assert_eq!(block_hash_opt, Some(expected_hash));
323 let txid = relevant_txids[0].0;
324 assert_eq!(txid, chan.3.txid());
325 nodes[0].node.transaction_unconfirmed(&txid);
326 assert_eq!(nodes[0].node.list_channels().len(), 0);
327 } else if connect_style == ConnectStyle::FullBlockViaListen {
328 disconnect_blocks(&nodes[0], CHAN_CONFIRM_DEPTH - 1);
329 assert_eq!(nodes[0].node.list_channels().len(), 1);
330 assert_eq!(nodes[0].node.list_channels()[0].confirmations, Some(1));
331 disconnect_blocks(&nodes[0], 1);
332 assert_eq!(nodes[0].node.list_usable_channels().len(), 0);
334 disconnect_all_blocks(&nodes[0]);
335 assert_eq!(nodes[0].node.list_usable_channels().len(), 0);
338 let relevant_txids = nodes[0].node.get_relevant_txids();
339 assert_eq!(relevant_txids.len(), 0);
342 let per_peer_state = nodes[0].node.per_peer_state.read().unwrap();
343 let peer_state = per_peer_state.get(&nodes[1].node.get_our_node_id()).unwrap().lock().unwrap();
344 assert_eq!(peer_state.channel_by_id.len(), 0);
345 assert_eq!(nodes[0].node.short_to_chan_info.read().unwrap().len(), 0);
348 // With expect_channel_force_closed set the TestChainMonitor will enforce that the next update
349 // is a ChannelForcClosed on the right channel with should_broadcast set.
350 *nodes[0].chain_monitor.expect_channel_force_closed.lock().unwrap() = Some((chan.2, true));
351 nodes[0].node.test_process_background_events(); // Required to free the pending background monitor update
352 check_added_monitors!(nodes[0], 1);
353 let expected_err = "Funding transaction was un-confirmed. Locked at 6 confs, now have 0 confs.";
354 if reorg_after_reload || !reload_node {
355 handle_announce_close_broadcast_events(&nodes, 0, 1, true, "Channel closed because of an exception: Funding transaction was un-confirmed. Locked at 6 confs, now have 0 confs.");
356 check_added_monitors!(nodes[1], 1);
357 check_closed_event!(nodes[1], 1, ClosureReason::CounterpartyForceClosed { peer_msg: UntrustedString(format!("Channel closed because of an exception: {}", expected_err)) }
358 , [nodes[0].node.get_our_node_id()], 100000);
361 check_closed_event!(nodes[0], 1, ClosureReason::ProcessingError { err: expected_err.to_owned() },
362 [nodes[1].node.get_our_node_id()], 100000);
363 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
364 nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
366 // Now check that we can create a new channel
367 if reload_node && nodes[0].node.per_peer_state.read().unwrap().len() == 0 {
368 // If we dropped the channel before reloading the node, nodes[1] was also dropped from
369 // nodes[0] storage, and hence not connected again on startup. We therefore need to
370 // reconnect to the node before attempting to create a new channel.
371 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &Init {
372 features: nodes[1].node.init_features(), networks: None, remote_network_address: None
375 create_announced_chan_between_nodes(&nodes, 0, 1);
376 send_payment(&nodes[0], &[&nodes[1]], 8000000);
380 fn test_unconf_chan() {
381 do_test_unconf_chan(true, true, false, ConnectStyle::BestBlockFirstSkippingBlocks);
382 do_test_unconf_chan(false, true, false, ConnectStyle::BestBlockFirstSkippingBlocks);
383 do_test_unconf_chan(true, false, false, ConnectStyle::BestBlockFirstSkippingBlocks);
384 do_test_unconf_chan(false, false, false, ConnectStyle::BestBlockFirstSkippingBlocks);
386 do_test_unconf_chan(true, true, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
387 do_test_unconf_chan(false, true, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
388 do_test_unconf_chan(true, false, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
389 do_test_unconf_chan(false, false, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
393 fn test_unconf_chan_via_listen() {
394 do_test_unconf_chan(true, true, false, ConnectStyle::FullBlockViaListen);
395 do_test_unconf_chan(false, true, false, ConnectStyle::FullBlockViaListen);
396 do_test_unconf_chan(true, false, false, ConnectStyle::FullBlockViaListen);
397 do_test_unconf_chan(false, false, false, ConnectStyle::FullBlockViaListen);
401 fn test_unconf_chan_via_funding_unconfirmed() {
402 do_test_unconf_chan(true, true, true, ConnectStyle::BestBlockFirstSkippingBlocks);
403 do_test_unconf_chan(false, true, true, ConnectStyle::BestBlockFirstSkippingBlocks);
404 do_test_unconf_chan(true, false, true, ConnectStyle::BestBlockFirstSkippingBlocks);
405 do_test_unconf_chan(false, false, true, ConnectStyle::BestBlockFirstSkippingBlocks);
407 do_test_unconf_chan(true, true, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
408 do_test_unconf_chan(false, true, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
409 do_test_unconf_chan(true, false, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
410 do_test_unconf_chan(false, false, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
412 do_test_unconf_chan(true, true, true, ConnectStyle::FullBlockViaListen);
413 do_test_unconf_chan(false, true, true, ConnectStyle::FullBlockViaListen);
414 do_test_unconf_chan(true, false, true, ConnectStyle::FullBlockViaListen);
415 do_test_unconf_chan(false, false, true, ConnectStyle::FullBlockViaListen);
419 fn test_set_outpoints_partial_claiming() {
420 // - remote party claim tx, new bump tx
421 // - disconnect remote claiming tx, new bump
422 // - disconnect tx, see no tx anymore
423 let chanmon_cfgs = create_chanmon_cfgs(2);
424 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
425 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
426 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
428 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000);
429 let (payment_preimage_1, payment_hash_1, ..) = route_payment(&nodes[1], &[&nodes[0]], 3_000_000);
430 let (payment_preimage_2, payment_hash_2, ..) = route_payment(&nodes[1], &[&nodes[0]], 3_000_000);
432 // Remote commitment txn with 4 outputs: to_local, to_remote, 2 outgoing HTLC
433 let remote_txn = get_local_commitment_txn!(nodes[1], chan.2);
434 assert_eq!(remote_txn.len(), 3);
435 assert_eq!(remote_txn[0].output.len(), 4);
436 assert_eq!(remote_txn[0].input.len(), 1);
437 assert_eq!(remote_txn[0].input[0].previous_output.txid, chan.3.txid());
438 check_spends!(remote_txn[1], remote_txn[0]);
439 check_spends!(remote_txn[2], remote_txn[0]);
441 // Connect blocks on node A to advance height towards TEST_FINAL_CLTV
442 // Provide node A with both preimage
443 nodes[0].node.claim_funds(payment_preimage_1);
444 expect_payment_claimed!(nodes[0], payment_hash_1, 3_000_000);
445 nodes[0].node.claim_funds(payment_preimage_2);
446 expect_payment_claimed!(nodes[0], payment_hash_2, 3_000_000);
447 check_added_monitors!(nodes[0], 2);
448 nodes[0].node.get_and_clear_pending_msg_events();
450 // Connect blocks on node A commitment transaction
451 mine_transaction(&nodes[0], &remote_txn[0]);
452 check_closed_broadcast!(nodes[0], true);
453 check_closed_event!(nodes[0], 1, ClosureReason::CommitmentTxConfirmed, [nodes[1].node.get_our_node_id()], 1000000);
454 check_added_monitors!(nodes[0], 1);
455 // Verify node A broadcast tx claiming both HTLCs
457 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
458 // ChannelMonitor: claim tx
459 assert_eq!(node_txn.len(), 1);
460 check_spends!(node_txn[0], remote_txn[0]);
461 assert_eq!(node_txn[0].input.len(), 2);
465 // Connect blocks on node B
466 connect_blocks(&nodes[1], TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + 1);
467 check_closed_broadcast!(nodes[1], true);
468 check_closed_event!(nodes[1], 1, ClosureReason::HolderForceClosed, [nodes[0].node.get_our_node_id()], 1000000);
469 check_added_monitors!(nodes[1], 1);
470 // Verify node B broadcast 2 HTLC-timeout txn
471 let partial_claim_tx = {
472 let mut node_txn = nodes[1].tx_broadcaster.unique_txn_broadcast();
473 assert_eq!(node_txn.len(), 3);
474 check_spends!(node_txn[0], chan.3);
475 check_spends!(node_txn[1], node_txn[0]);
476 check_spends!(node_txn[2], node_txn[0]);
477 assert_eq!(node_txn[1].input.len(), 1);
478 assert_eq!(node_txn[2].input.len(), 1);
479 assert_ne!(node_txn[1].input[0].previous_output, node_txn[2].input[0].previous_output);
483 // Broadcast partial claim on node A, should regenerate a claiming tx with HTLC dropped
484 mine_transaction(&nodes[0], &partial_claim_tx);
486 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
487 assert_eq!(node_txn.len(), 1);
488 check_spends!(node_txn[0], remote_txn[0]);
489 assert_eq!(node_txn[0].input.len(), 1); //dropped HTLC
492 nodes[0].node.get_and_clear_pending_msg_events();
494 // Disconnect last block on node A, should regenerate a claiming tx with HTLC dropped
495 disconnect_blocks(&nodes[0], 1);
497 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
498 assert_eq!(node_txn.len(), 1);
499 check_spends!(node_txn[0], remote_txn[0]);
500 assert_eq!(node_txn[0].input.len(), 2); //resurrected HTLC
504 //// Disconnect one more block and then reconnect multiple no transaction should be generated
505 disconnect_blocks(&nodes[0], 1);
506 connect_blocks(&nodes[0], 15);
508 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
509 assert_eq!(node_txn.len(), 0);
514 fn do_test_to_remote_after_local_detection(style: ConnectStyle) {
515 // In previous code, detection of to_remote outputs in a counterparty commitment transaction
516 // was dependent on whether a local commitment transaction had been seen on-chain previously.
517 // This resulted in some edge cases around not being able to generate a SpendableOutput event
520 // Here, we test this by first confirming one set of commitment transactions, then
521 // disconnecting them and reconnecting another. We then confirm them and check that the correct
522 // SpendableOutput event is generated.
523 let chanmon_cfgs = create_chanmon_cfgs(2);
524 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
525 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
526 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
528 *nodes[0].connect_style.borrow_mut() = style;
529 *nodes[1].connect_style.borrow_mut() = style;
531 let (_, _, chan_id, funding_tx) =
532 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 100_000_000);
533 let funding_outpoint = OutPoint { txid: funding_tx.txid(), index: 0 };
534 assert_eq!(ChannelId::v1_from_funding_outpoint(funding_outpoint), chan_id);
536 let remote_txn_a = get_local_commitment_txn!(nodes[0], chan_id);
537 let remote_txn_b = get_local_commitment_txn!(nodes[1], chan_id);
539 mine_transaction(&nodes[0], &remote_txn_a[0]);
540 mine_transaction(&nodes[1], &remote_txn_a[0]);
542 assert!(nodes[0].node.list_channels().is_empty());
543 check_closed_broadcast!(nodes[0], true);
544 check_added_monitors!(nodes[0], 1);
545 check_closed_event!(nodes[0], 1, ClosureReason::CommitmentTxConfirmed, [nodes[1].node.get_our_node_id()], 1000000);
546 assert!(nodes[1].node.list_channels().is_empty());
547 check_closed_broadcast!(nodes[1], true);
548 check_added_monitors!(nodes[1], 1);
549 check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed, [nodes[0].node.get_our_node_id()], 1000000);
551 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
552 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
554 disconnect_blocks(&nodes[0], 1);
555 disconnect_blocks(&nodes[1], 1);
557 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
558 assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
559 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
560 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
562 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
563 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
565 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
566 assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
567 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
568 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
570 mine_transaction(&nodes[0], &remote_txn_b[0]);
571 mine_transaction(&nodes[1], &remote_txn_b[0]);
573 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
574 assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
575 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
576 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
578 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
579 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
581 let mut node_a_spendable = nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events();
582 assert_eq!(node_a_spendable.len(), 1);
583 if let Event::SpendableOutputs { outputs, channel_id } = node_a_spendable.pop().unwrap() {
584 assert_eq!(outputs.len(), 1);
585 assert_eq!(channel_id, Some(chan_id));
586 let spend_tx = nodes[0].keys_manager.backing.spend_spendable_outputs(&[&outputs[0]], Vec::new(),
587 Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(), 253, None, &Secp256k1::new()).unwrap();
588 check_spends!(spend_tx, remote_txn_b[0]);
591 // nodes[1] is waiting for the to_self_delay to expire, which is many more than
592 // ANTI_REORG_DELAY. Instead, walk it back and confirm the original remote_txn_a commitment
593 // again and check that nodes[1] generates a similar spendable output.
594 // Technically a reorg of ANTI_REORG_DELAY violates our assumptions, so this is undefined by
595 // our API spec, but we currently handle this correctly and there's little reason we shouldn't
597 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
598 disconnect_blocks(&nodes[1], ANTI_REORG_DELAY);
599 mine_transaction(&nodes[1], &remote_txn_a[0]);
600 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
602 let mut node_b_spendable = nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events();
603 assert_eq!(node_b_spendable.len(), 1);
604 if let Event::SpendableOutputs { outputs, channel_id } = node_b_spendable.pop().unwrap() {
605 assert_eq!(outputs.len(), 1);
606 assert_eq!(channel_id, Some(chan_id));
607 let spend_tx = nodes[1].keys_manager.backing.spend_spendable_outputs(&[&outputs[0]], Vec::new(),
608 Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(), 253, None, &Secp256k1::new()).unwrap();
609 check_spends!(spend_tx, remote_txn_a[0]);
614 fn test_to_remote_after_local_detection() {
615 do_test_to_remote_after_local_detection(ConnectStyle::BestBlockFirst);
616 do_test_to_remote_after_local_detection(ConnectStyle::BestBlockFirstSkippingBlocks);
617 do_test_to_remote_after_local_detection(ConnectStyle::BestBlockFirstReorgsOnlyTip);
618 do_test_to_remote_after_local_detection(ConnectStyle::TransactionsFirst);
619 do_test_to_remote_after_local_detection(ConnectStyle::TransactionsFirstSkippingBlocks);
620 do_test_to_remote_after_local_detection(ConnectStyle::TransactionsFirstReorgsOnlyTip);
621 do_test_to_remote_after_local_detection(ConnectStyle::FullBlockViaListen);
625 fn test_htlc_preimage_claim_holder_commitment_after_counterparty_commitment_reorg() {
626 // We detect a counterparty commitment confirm onchain, followed by a reorg and a confirmation
627 // of a holder commitment. Then, if we learn of the preimage for an HTLC in both commitments,
628 // test that we only claim the currently confirmed commitment.
629 let chanmon_cfgs = create_chanmon_cfgs(2);
630 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
631 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None, None]);
632 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
634 let (_, _, chan_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 1);
636 // Route an HTLC which we will claim onchain with the preimage.
637 let (payment_preimage, payment_hash, ..) = route_payment(&nodes[0], &[&nodes[1]], 1_000_000);
639 // Force close with the latest counterparty commitment, confirm it, and reorg it with the latest
640 // holder commitment.
641 nodes[0].node.force_close_broadcasting_latest_txn(&chan_id, &nodes[1].node.get_our_node_id()).unwrap();
642 check_closed_broadcast(&nodes[0], 1, true);
643 check_added_monitors(&nodes[0], 1);
644 check_closed_event(&nodes[0], 1, ClosureReason::HolderForceClosed, false, &[nodes[1].node.get_our_node_id()], 100000);
646 nodes[1].node.force_close_broadcasting_latest_txn(&chan_id, &nodes[0].node.get_our_node_id()).unwrap();
647 check_closed_broadcast(&nodes[1], 1, true);
648 check_added_monitors(&nodes[1], 1);
649 check_closed_event(&nodes[1], 1, ClosureReason::HolderForceClosed, false, &[nodes[0].node.get_our_node_id()], 100000);
651 let mut txn = nodes[0].tx_broadcaster.txn_broadcast();
652 assert_eq!(txn.len(), 1);
653 let commitment_tx_a = txn.pop().unwrap();
654 check_spends!(commitment_tx_a, funding_tx);
656 let mut txn = nodes[1].tx_broadcaster.txn_broadcast();
657 assert_eq!(txn.len(), 1);
658 let commitment_tx_b = txn.pop().unwrap();
659 check_spends!(commitment_tx_b, funding_tx);
661 mine_transaction(&nodes[0], &commitment_tx_a);
662 mine_transaction(&nodes[1], &commitment_tx_a);
664 disconnect_blocks(&nodes[0], 1);
665 disconnect_blocks(&nodes[1], 1);
667 mine_transaction(&nodes[0], &commitment_tx_b);
668 mine_transaction(&nodes[1], &commitment_tx_b);
669 if nodes[1].connect_style.borrow().updates_best_block_first() {
670 let _ = nodes[1].tx_broadcaster.txn_broadcast();
673 // Provide the preimage now, such that we only claim from the holder commitment (since it's
674 // currently confirmed) and not the counterparty's.
675 get_monitor!(nodes[1], chan_id).provide_payment_preimage(
676 &payment_hash, &payment_preimage, &nodes[1].tx_broadcaster,
677 &LowerBoundedFeeEstimator(nodes[1].fee_estimator), &nodes[1].logger
680 let mut txn = nodes[1].tx_broadcaster.txn_broadcast();
681 assert_eq!(txn.len(), 1);
682 let htlc_success_tx = txn.pop().unwrap();
683 check_spends!(htlc_success_tx, commitment_tx_b);
687 fn test_htlc_preimage_claim_prev_counterparty_commitment_after_current_counterparty_commitment_reorg() {
688 // We detect a counterparty commitment confirm onchain, followed by a reorg and a
689 // confirmation of the previous (still unrevoked) counterparty commitment. Then, if we learn
690 // of the preimage for an HTLC in both commitments, test that we only claim the currently
691 // confirmed commitment.
692 let chanmon_cfgs = create_chanmon_cfgs(2);
693 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
694 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None, None]);
695 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
697 let (_, _, chan_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 1);
699 // Route an HTLC which we will claim onchain with the preimage.
700 let (payment_preimage, payment_hash, ..) = route_payment(&nodes[0], &[&nodes[1]], 1_000_000);
702 // Obtain the current commitment, which will become the previous after a fee update.
703 let prev_commitment_a = &get_local_commitment_txn!(nodes[0], chan_id)[0];
705 *nodes[0].fee_estimator.sat_per_kw.lock().unwrap() *= 4;
706 nodes[0].node.timer_tick_occurred();
707 check_added_monitors(&nodes[0], 1);
708 let mut msg_events = nodes[0].node.get_and_clear_pending_msg_events();
709 assert_eq!(msg_events.len(), 1);
710 let (update_fee, commit_sig) = if let MessageSendEvent::UpdateHTLCs { node_id, mut updates } = msg_events.pop().unwrap() {
711 assert_eq!(node_id, nodes[1].node.get_our_node_id());
712 (updates.update_fee.take().unwrap(), updates.commitment_signed)
714 panic!("Unexpected message send event");
717 // Handle the fee update on the other side, but don't send the last RAA such that the previous
718 // commitment is still valid (unrevoked).
719 nodes[1].node().handle_update_fee(&nodes[0].node.get_our_node_id(), &update_fee);
720 let _last_revoke_and_ack = commitment_signed_dance!(nodes[1], nodes[0], commit_sig, false, true, false, true);
722 // Force close with the latest commitment, confirm it, and reorg it with the previous commitment.
723 nodes[0].node.force_close_broadcasting_latest_txn(&chan_id, &nodes[1].node.get_our_node_id()).unwrap();
724 check_closed_broadcast(&nodes[0], 1, true);
725 check_added_monitors(&nodes[0], 1);
726 check_closed_event(&nodes[0], 1, ClosureReason::HolderForceClosed, false, &[nodes[1].node.get_our_node_id()], 100000);
728 let mut txn = nodes[0].tx_broadcaster.txn_broadcast();
729 assert_eq!(txn.len(), 1);
730 let current_commitment_a = txn.pop().unwrap();
731 assert_ne!(current_commitment_a.txid(), prev_commitment_a.txid());
732 check_spends!(current_commitment_a, funding_tx);
734 mine_transaction(&nodes[0], ¤t_commitment_a);
735 mine_transaction(&nodes[1], ¤t_commitment_a);
737 check_closed_broadcast(&nodes[1], 1, true);
738 check_added_monitors(&nodes[1], 1);
739 check_closed_event(&nodes[1], 1, ClosureReason::CommitmentTxConfirmed, false, &[nodes[0].node.get_our_node_id()], 100000);
741 disconnect_blocks(&nodes[0], 1);
742 disconnect_blocks(&nodes[1], 1);
744 mine_transaction(&nodes[0], &prev_commitment_a);
745 mine_transaction(&nodes[1], &prev_commitment_a);
747 // Provide the preimage now, such that we only claim from the previous commitment (since it's
748 // currently confirmed) and not the latest.
749 get_monitor!(nodes[1], chan_id).provide_payment_preimage(
750 &payment_hash, &payment_preimage, &nodes[1].tx_broadcaster,
751 &LowerBoundedFeeEstimator(nodes[1].fee_estimator), &nodes[1].logger
754 let mut txn = nodes[1].tx_broadcaster.txn_broadcast();
755 assert_eq!(txn.len(), 1);
756 let htlc_preimage_tx = txn.pop().unwrap();
757 check_spends!(htlc_preimage_tx, prev_commitment_a);
758 // Make sure it was indeed a preimage claim and not a revocation claim since the previous
759 // commitment (still unrevoked) is the currently confirmed closing transaction.
760 assert_eq!(htlc_preimage_tx.input[0].witness.second_to_last().unwrap(), &payment_preimage.0[..]);
763 fn do_test_retries_own_commitment_broadcast_after_reorg(anchors: bool, revoked_counterparty_commitment: bool) {
764 // Tests that a node will retry broadcasting its own commitment after seeing a confirmed
765 // counterparty commitment be reorged out.
766 let mut chanmon_cfgs = create_chanmon_cfgs(2);
767 if revoked_counterparty_commitment {
768 chanmon_cfgs[1].keys_manager.disable_revocation_policy_check = true;
770 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
771 let mut config = test_default_channel_config();
773 config.channel_handshake_config.negotiate_anchors_zero_fee_htlc_tx = true;
774 config.manually_accept_inbound_channels = true;
777 let new_chain_monitor;
778 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[Some(config), Some(config)]);
779 let nodes_1_deserialized;
780 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
782 let (_, _, chan_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 1);
784 // Route a payment so we have an HTLC to claim as well.
785 let _ = route_payment(&nodes[0], &[&nodes[1]], 1_000_000);
787 if revoked_counterparty_commitment {
788 // Trigger a fee update such that we advance the state. We will have B broadcast its state
789 // without the fee update.
790 let serialized_node = nodes[1].node.encode();
791 let serialized_monitor = get_monitor!(nodes[1], chan_id).encode();
793 *chanmon_cfgs[0].fee_estimator.sat_per_kw.lock().unwrap() += 1;
794 nodes[0].node.timer_tick_occurred();
795 check_added_monitors!(nodes[0], 1);
797 let fee_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
798 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &fee_update.update_fee.unwrap());
799 commitment_signed_dance!(nodes[1], nodes[0], fee_update.commitment_signed, false);
802 nodes[1], config, &serialized_node, &[&serialized_monitor], persister, new_chain_monitor, nodes_1_deserialized
806 // Connect blocks until the HTLC expiry is met, prompting a commitment broadcast by A.
807 connect_blocks(&nodes[0], TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + 1);
808 check_closed_broadcast(&nodes[0], 1, true);
809 check_added_monitors(&nodes[0], 1);
810 check_closed_event(&nodes[0], 1, ClosureReason::HolderForceClosed, false, &[nodes[1].node.get_our_node_id()], 100_000);
813 let mut txn = nodes[0].tx_broadcaster.txn_broadcast();
815 assert_eq!(txn.len(), 1);
816 let commitment_tx_a = txn.pop().unwrap();
817 check_spends!(commitment_tx_a, funding_tx);
819 assert_eq!(txn.len(), 2);
820 let htlc_tx_a = txn.pop().unwrap();
821 let commitment_tx_a = txn.pop().unwrap();
822 check_spends!(commitment_tx_a, funding_tx);
823 check_spends!(htlc_tx_a, commitment_tx_a);
827 // B will also broadcast its own commitment.
828 nodes[1].node.force_close_broadcasting_latest_txn(&chan_id, &nodes[0].node.get_our_node_id()).unwrap();
829 check_closed_broadcast(&nodes[1], 1, true);
830 check_added_monitors(&nodes[1], 1);
831 check_closed_event(&nodes[1], 1, ClosureReason::HolderForceClosed, false, &[nodes[0].node.get_our_node_id()], 100_000);
834 let mut txn = nodes[1].tx_broadcaster.txn_broadcast();
835 assert_eq!(txn.len(), 1);
836 let tx = txn.pop().unwrap();
837 check_spends!(tx, funding_tx);
841 // Confirm B's commitment, A should now broadcast an HTLC timeout for commitment B.
842 mine_transaction(&nodes[0], &commitment_b);
844 let mut txn = nodes[0].tx_broadcaster.txn_broadcast();
845 if nodes[0].connect_style.borrow().updates_best_block_first() {
846 // `commitment_a` and `htlc_timeout_a` are rebroadcast because the best block was
847 // updated prior to seeing `commitment_b`.
848 assert_eq!(txn.len(), if anchors { 2 } else { 3 });
849 check_spends!(txn.last().unwrap(), commitment_b);
851 assert_eq!(txn.len(), 1);
852 check_spends!(txn[0], commitment_b);
856 // Disconnect the block, allowing A to retry its own commitment. Note that we connect two
857 // blocks, one to get us back to the original height, and another to retry our pending claims.
858 disconnect_blocks(&nodes[0], 1);
859 connect_blocks(&nodes[0], 2);
861 let mut txn = nodes[0].tx_broadcaster.unique_txn_broadcast();
863 assert_eq!(txn.len(), 1);
864 check_spends!(txn[0], funding_tx);
866 assert_eq!(txn.len(), 2);
867 check_spends!(txn[0], txn[1]); // HTLC timeout A
868 check_spends!(txn[1], funding_tx); // Commitment A
869 assert_ne!(txn[1].txid(), commitment_b.txid());
875 fn test_retries_own_commitment_broadcast_after_reorg() {
876 do_test_retries_own_commitment_broadcast_after_reorg(false, false);
877 do_test_retries_own_commitment_broadcast_after_reorg(false, true);
878 do_test_retries_own_commitment_broadcast_after_reorg(true, false);
879 do_test_retries_own_commitment_broadcast_after_reorg(true, true);