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::sign::OutputSpender;
19 use crate::util::test_utils;
20 use crate::util::ser::Writeable;
21 use crate::util::string::UntrustedString;
23 use bitcoin::blockdata::script::Builder;
24 use bitcoin::blockdata::opcodes;
25 use bitcoin::secp256k1::Secp256k1;
27 use crate::prelude::*;
29 use crate::ln::{functional_test_utils::*, ChannelId};
31 fn do_test_onchain_htlc_reorg(local_commitment: bool, claim: bool) {
32 // Our on-chain HTLC-claim learning has a few properties worth testing:
33 // * If an upstream HTLC is claimed with a preimage (both against our own commitment
34 // transaction our counterparty's), we claim it backwards immediately.
35 // * If an upstream HTLC is claimed with a timeout, we delay ANTI_REORG_DELAY before failing
36 // it backwards to ensure our counterparty can't claim with a preimage in a reorg.
38 // Here we test both properties in any combination based on the two bools passed in as
41 // If local_commitment is set, we first broadcast a local commitment containing an offered HTLC
42 // and an HTLC-Timeout tx, otherwise we broadcast a remote commitment containing a received
43 // HTLC and a local HTLC-Timeout tx spending it.
45 // We then either allow these transactions to confirm (if !claim) or we wait until one block
46 // before they otherwise would and reorg them out, confirming an HTLC-Success tx instead.
47 let chanmon_cfgs = create_chanmon_cfgs(3);
48 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
49 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
50 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
52 create_announced_chan_between_nodes(&nodes, 0, 1);
53 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
55 // Make sure all nodes are at the same starting height
56 connect_blocks(&nodes[0], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[0].best_block_info().1);
57 connect_blocks(&nodes[1], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[1].best_block_info().1);
58 connect_blocks(&nodes[2], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[2].best_block_info().1);
60 let (our_payment_preimage, our_payment_hash, ..) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1_000_000);
62 // Provide preimage to node 2 by claiming payment
63 nodes[2].node.claim_funds(our_payment_preimage);
64 expect_payment_claimed!(nodes[2], our_payment_hash, 1_000_000);
65 check_added_monitors!(nodes[2], 1);
66 get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
68 let claim_txn = if local_commitment {
69 // Broadcast node 1 commitment txn to broadcast the HTLC-Timeout
70 let node_1_commitment_txn = get_local_commitment_txn!(nodes[1], chan_2.2);
71 assert_eq!(node_1_commitment_txn.len(), 2); // 1 local commitment tx, 1 Outbound HTLC-Timeout
72 assert_eq!(node_1_commitment_txn[0].output.len(), 2); // to-self and Offered HTLC (to-remote/to-node-3 is dust)
73 check_spends!(node_1_commitment_txn[0], chan_2.3);
74 check_spends!(node_1_commitment_txn[1], node_1_commitment_txn[0]);
76 // Give node 2 node 1's transactions and get its response (claiming the HTLC instead).
77 connect_block(&nodes[2], &create_dummy_block(nodes[2].best_block_hash(), 42, node_1_commitment_txn.clone()));
78 check_added_monitors!(nodes[2], 1);
79 check_closed_broadcast!(nodes[2], true); // We should get a BroadcastChannelUpdate (and *only* a BroadcstChannelUpdate)
80 check_closed_event!(nodes[2], 1, ClosureReason::CommitmentTxConfirmed, [nodes[1].node.get_our_node_id()], 100000);
81 let node_2_commitment_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
82 assert_eq!(node_2_commitment_txn.len(), 1); // ChannelMonitor: 1 offered HTLC-Claim
83 check_spends!(node_2_commitment_txn[0], node_1_commitment_txn[0]);
85 // Make sure node 1's height is the same as the !local_commitment case
86 connect_blocks(&nodes[1], 1);
87 // Confirm node 1's commitment txn (and HTLC-Timeout) on node 1
88 connect_block(&nodes[1], &create_dummy_block(nodes[1].best_block_hash(), 42, node_1_commitment_txn.clone()));
90 // ...but return node 1's commitment tx in case claim is set and we're preparing to reorg
91 vec![node_1_commitment_txn[0].clone(), node_2_commitment_txn[0].clone()]
93 // Broadcast node 2 commitment txn
94 let mut node_2_commitment_txn = get_local_commitment_txn!(nodes[2], chan_2.2);
95 assert_eq!(node_2_commitment_txn.len(), 2); // 1 local commitment tx, 1 Received HTLC-Claim
96 assert_eq!(node_2_commitment_txn[0].output.len(), 2); // to-remote and Received HTLC (to-self is dust)
97 check_spends!(node_2_commitment_txn[0], chan_2.3);
98 check_spends!(node_2_commitment_txn[1], node_2_commitment_txn[0]);
100 // Give node 1 node 2's commitment transaction and get its response (timing the HTLC out)
101 mine_transaction(&nodes[1], &node_2_commitment_txn[0]);
102 connect_blocks(&nodes[1], TEST_FINAL_CLTV); // Confirm blocks until the HTLC expires
103 let node_1_commitment_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
104 assert_eq!(node_1_commitment_txn.len(), 1); // ChannelMonitor: 1 offered HTLC-Timeout
105 check_spends!(node_1_commitment_txn[0], node_2_commitment_txn[0]);
107 // Confirm node 1's HTLC-Timeout on node 1
108 mine_transaction(&nodes[1], &node_1_commitment_txn[0]);
109 // ...but return node 2's commitment tx (and claim) in case claim is set and we're preparing to reorg
110 vec![node_2_commitment_txn.pop().unwrap()]
112 check_added_monitors!(nodes[1], 1);
113 check_closed_broadcast!(nodes[1], true); // We should get a BroadcastChannelUpdate (and *only* a BroadcstChannelUpdate)
114 check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed, [nodes[2].node.get_our_node_id()], 100000);
115 // Connect ANTI_REORG_DELAY - 2 blocks, giving us a confirmation count of ANTI_REORG_DELAY - 1.
116 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 2);
117 check_added_monitors!(nodes[1], 0);
118 assert_eq!(nodes[1].node.get_and_clear_pending_events().len(), 0);
121 // Disconnect Node 1's HTLC-Timeout which was connected above
122 disconnect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
124 connect_block(&nodes[1], &create_dummy_block(nodes[1].best_block_hash(), 42, claim_txn));
126 // ChannelManager only polls chain::Watch::release_pending_monitor_events when we
127 // probe it for events, so we probe non-message events here (which should just be the
128 // PaymentForwarded event).
129 expect_payment_forwarded!(nodes[1], nodes[0], nodes[2], Some(1000), true, true);
131 // Confirm the timeout tx and check that we fail the HTLC backwards
132 connect_block(&nodes[1], &create_dummy_block(nodes[1].best_block_hash(), 42, Vec::new()));
133 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 }]);
136 check_added_monitors!(nodes[1], 1);
137 // Which should result in an immediate claim/fail of the HTLC:
138 let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
140 assert_eq!(htlc_updates.update_fulfill_htlcs.len(), 1);
141 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fulfill_htlcs[0]);
143 assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
144 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]);
146 commitment_signed_dance!(nodes[0], nodes[1], htlc_updates.commitment_signed, false, true);
148 expect_payment_sent!(nodes[0], our_payment_preimage);
150 expect_payment_failed_with_update!(nodes[0], our_payment_hash, false, chan_2.0.contents.short_channel_id, true);
155 fn test_onchain_htlc_claim_reorg_local_commitment() {
156 do_test_onchain_htlc_reorg(true, true);
159 fn test_onchain_htlc_timeout_delay_local_commitment() {
160 do_test_onchain_htlc_reorg(true, false);
163 fn test_onchain_htlc_claim_reorg_remote_commitment() {
164 do_test_onchain_htlc_reorg(false, true);
167 fn test_onchain_htlc_timeout_delay_remote_commitment() {
168 do_test_onchain_htlc_reorg(false, false);
172 fn test_counterparty_revoked_reorg() {
173 // Test what happens when a revoked counterparty transaction is broadcast but then reorg'd out
174 // of the main chain. Specifically, HTLCs in the latest commitment transaction which are not
175 // included in the revoked commitment transaction should not be considered failed, and should
176 // still be claim-from-able after the reorg.
177 let chanmon_cfgs = create_chanmon_cfgs(2);
178 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
179 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
180 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
182 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 500_000_000);
184 // Get the initial commitment transaction for broadcast, before any HTLCs are added at all.
185 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan.2);
186 assert_eq!(revoked_local_txn.len(), 1);
188 // Now add two HTLCs in each direction, one dust and one not.
189 route_payment(&nodes[0], &[&nodes[1]], 5_000_000);
190 route_payment(&nodes[0], &[&nodes[1]], 5_000);
191 let (payment_preimage_3, payment_hash_3, ..) = route_payment(&nodes[1], &[&nodes[0]], 4_000_000);
192 let payment_hash_4 = route_payment(&nodes[1], &[&nodes[0]], 4_000).1;
194 nodes[0].node.claim_funds(payment_preimage_3);
195 let _ = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
196 check_added_monitors!(nodes[0], 1);
197 expect_payment_claimed!(nodes[0], payment_hash_3, 4_000_000);
199 let mut unrevoked_local_txn = get_local_commitment_txn!(nodes[0], chan.2);
200 assert_eq!(unrevoked_local_txn.len(), 3); // commitment + 2 HTLC txn
201 // Sort the unrevoked transactions in reverse order, ie commitment tx, then HTLC 1 then HTLC 3
202 unrevoked_local_txn.sort_unstable_by_key(|tx| 1_000_000 - tx.output.iter().map(|outp| outp.value).sum::<u64>());
204 // Now mine A's old commitment transaction, which should close the channel, but take no action
205 // on any of the HTLCs, at least until we get six confirmations (which we won't get).
206 mine_transaction(&nodes[1], &revoked_local_txn[0]);
207 check_added_monitors!(nodes[1], 1);
208 check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed, [nodes[0].node.get_our_node_id()], 1000000);
209 check_closed_broadcast!(nodes[1], true);
211 // Connect up to one block before the revoked transaction would be considered final, then do a
212 // reorg that disconnects the full chain and goes up to the height at which the revoked
213 // transaction would be final.
214 let theoretical_conf_height = nodes[1].best_block_info().1 + ANTI_REORG_DELAY - 1;
215 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 2);
216 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
217 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
219 disconnect_all_blocks(&nodes[1]);
220 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
221 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
223 connect_blocks(&nodes[1], theoretical_conf_height);
224 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
225 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
227 // Now connect A's latest commitment transaction instead and resolve the HTLCs
228 mine_transaction(&nodes[1], &unrevoked_local_txn[0]);
229 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
230 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
232 // Connect the HTLC claim transaction for HTLC 3
233 mine_transaction(&nodes[1], &unrevoked_local_txn[2]);
234 expect_payment_sent(&nodes[1], payment_preimage_3, None, true, false);
235 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
237 // Connect blocks to confirm the unrevoked commitment transaction
238 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 2);
239 expect_payment_failed!(nodes[1], payment_hash_4, false);
242 fn do_test_unconf_chan(reload_node: bool, reorg_after_reload: bool, use_funding_unconfirmed: bool, connect_style: ConnectStyle) {
243 // After creating a chan between nodes, we disconnect all blocks previously seen to force a
244 // channel close on nodes[0] side. We also use this to provide very basic testing of logic
245 // around freeing background events which store monitor updates during block_[dis]connected.
246 let chanmon_cfgs = create_chanmon_cfgs(2);
247 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
249 let new_chain_monitor;
251 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
252 let nodes_0_deserialized;
254 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
255 *nodes[0].connect_style.borrow_mut() = connect_style;
257 let chan_conf_height = core::cmp::max(nodes[0].best_block_info().1 + 1, nodes[1].best_block_info().1 + 1);
258 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
261 let per_peer_state = nodes[0].node.per_peer_state.read().unwrap();
262 let peer_state = per_peer_state.get(&nodes[1].node.get_our_node_id()).unwrap().lock().unwrap();
263 assert_eq!(peer_state.channel_by_id.len(), 1);
264 assert_eq!(nodes[0].node.short_to_chan_info.read().unwrap().len(), 2);
267 assert_eq!(nodes[0].node.list_channels()[0].confirmations, Some(10));
268 assert_eq!(nodes[1].node.list_channels()[0].confirmations, Some(10));
270 if !reorg_after_reload {
271 if use_funding_unconfirmed {
272 let relevant_txids = nodes[0].node.get_relevant_txids();
273 assert_eq!(relevant_txids.len(), 1);
274 let block_hash_opt = relevant_txids[0].2;
275 let expected_hash = nodes[0].get_block_header(chan_conf_height).block_hash();
276 assert_eq!(relevant_txids[0].1, chan_conf_height);
277 assert_eq!(block_hash_opt, Some(expected_hash));
278 let txid = relevant_txids[0].0;
279 assert_eq!(txid, chan.3.txid());
280 nodes[0].node.transaction_unconfirmed(&txid);
281 assert_eq!(nodes[0].node.list_usable_channels().len(), 0);
282 } else if connect_style == ConnectStyle::FullBlockViaListen {
283 disconnect_blocks(&nodes[0], CHAN_CONFIRM_DEPTH - 1);
284 assert_eq!(nodes[0].node.list_usable_channels().len(), 1);
285 assert_eq!(nodes[0].node.list_channels()[0].confirmations, Some(1));
286 disconnect_blocks(&nodes[0], 1);
287 assert_eq!(nodes[0].node.list_usable_channels().len(), 0);
289 disconnect_all_blocks(&nodes[0]);
290 assert_eq!(nodes[0].node.list_usable_channels().len(), 0);
293 let relevant_txids = nodes[0].node.get_relevant_txids();
294 assert_eq!(relevant_txids.len(), 0);
297 let per_peer_state = nodes[0].node.per_peer_state.read().unwrap();
298 let peer_state = per_peer_state.get(&nodes[1].node.get_our_node_id()).unwrap().lock().unwrap();
299 assert_eq!(peer_state.channel_by_id.len(), 0);
300 assert_eq!(nodes[0].node.short_to_chan_info.read().unwrap().len(), 0);
305 // Since we currently have a background event pending, it's good to test that we survive a
306 // serialization roundtrip. Further, this tests the somewhat awkward edge-case of dropping
307 // the Channel object from the ChannelManager, but still having a monitor event pending for
308 // it when we go to deserialize, and then use the ChannelManager.
309 let nodes_0_serialized = nodes[0].node.encode();
310 let chan_0_monitor_serialized = get_monitor!(nodes[0], chan.2).encode();
312 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);
313 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
316 if reorg_after_reload {
317 if use_funding_unconfirmed {
318 let relevant_txids = nodes[0].node.get_relevant_txids();
319 assert_eq!(relevant_txids.len(), 1);
320 let block_hash_opt = relevant_txids[0].2;
321 let expected_hash = nodes[0].get_block_header(chan_conf_height).block_hash();
322 assert_eq!(chan_conf_height, relevant_txids[0].1);
323 assert_eq!(block_hash_opt, Some(expected_hash));
324 let txid = relevant_txids[0].0;
325 assert_eq!(txid, chan.3.txid());
326 nodes[0].node.transaction_unconfirmed(&txid);
327 assert_eq!(nodes[0].node.list_channels().len(), 0);
328 } else if connect_style == ConnectStyle::FullBlockViaListen {
329 disconnect_blocks(&nodes[0], CHAN_CONFIRM_DEPTH - 1);
330 assert_eq!(nodes[0].node.list_channels().len(), 1);
331 assert_eq!(nodes[0].node.list_channels()[0].confirmations, Some(1));
332 disconnect_blocks(&nodes[0], 1);
333 assert_eq!(nodes[0].node.list_usable_channels().len(), 0);
335 disconnect_all_blocks(&nodes[0]);
336 assert_eq!(nodes[0].node.list_usable_channels().len(), 0);
339 let relevant_txids = nodes[0].node.get_relevant_txids();
340 assert_eq!(relevant_txids.len(), 0);
343 let per_peer_state = nodes[0].node.per_peer_state.read().unwrap();
344 let peer_state = per_peer_state.get(&nodes[1].node.get_our_node_id()).unwrap().lock().unwrap();
345 assert_eq!(peer_state.channel_by_id.len(), 0);
346 assert_eq!(nodes[0].node.short_to_chan_info.read().unwrap().len(), 0);
349 // With expect_channel_force_closed set the TestChainMonitor will enforce that the next update
350 // is a ChannelForcClosed on the right channel with should_broadcast set.
351 *nodes[0].chain_monitor.expect_channel_force_closed.lock().unwrap() = Some((chan.2, true));
352 nodes[0].node.test_process_background_events(); // Required to free the pending background monitor update
353 check_added_monitors!(nodes[0], 1);
354 let expected_err = "Funding transaction was un-confirmed. Locked at 6 confs, now have 0 confs.";
355 if reorg_after_reload || !reload_node {
356 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.");
357 check_added_monitors!(nodes[1], 1);
358 check_closed_event!(nodes[1], 1, ClosureReason::CounterpartyForceClosed { peer_msg: UntrustedString(format!("Channel closed because of an exception: {}", expected_err)) }
359 , [nodes[0].node.get_our_node_id()], 100000);
362 check_closed_event!(nodes[0], 1, ClosureReason::ProcessingError { err: expected_err.to_owned() },
363 [nodes[1].node.get_our_node_id()], 100000);
364 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
365 nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
367 // Now check that we can create a new channel
368 if reload_node && nodes[0].node.per_peer_state.read().unwrap().len() == 0 {
369 // If we dropped the channel before reloading the node, nodes[1] was also dropped from
370 // nodes[0] storage, and hence not connected again on startup. We therefore need to
371 // reconnect to the node before attempting to create a new channel.
372 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &Init {
373 features: nodes[1].node.init_features(), networks: None, remote_network_address: None
376 create_announced_chan_between_nodes(&nodes, 0, 1);
377 send_payment(&nodes[0], &[&nodes[1]], 8000000);
381 fn test_unconf_chan() {
382 do_test_unconf_chan(true, true, false, ConnectStyle::BestBlockFirstSkippingBlocks);
383 do_test_unconf_chan(false, true, false, ConnectStyle::BestBlockFirstSkippingBlocks);
384 do_test_unconf_chan(true, false, false, ConnectStyle::BestBlockFirstSkippingBlocks);
385 do_test_unconf_chan(false, false, false, ConnectStyle::BestBlockFirstSkippingBlocks);
387 do_test_unconf_chan(true, true, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
388 do_test_unconf_chan(false, true, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
389 do_test_unconf_chan(true, false, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
390 do_test_unconf_chan(false, false, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
394 fn test_unconf_chan_via_listen() {
395 do_test_unconf_chan(true, true, false, ConnectStyle::FullBlockViaListen);
396 do_test_unconf_chan(false, true, false, ConnectStyle::FullBlockViaListen);
397 do_test_unconf_chan(true, false, false, ConnectStyle::FullBlockViaListen);
398 do_test_unconf_chan(false, false, false, ConnectStyle::FullBlockViaListen);
402 fn test_unconf_chan_via_funding_unconfirmed() {
403 do_test_unconf_chan(true, true, true, ConnectStyle::BestBlockFirstSkippingBlocks);
404 do_test_unconf_chan(false, true, true, ConnectStyle::BestBlockFirstSkippingBlocks);
405 do_test_unconf_chan(true, false, true, ConnectStyle::BestBlockFirstSkippingBlocks);
406 do_test_unconf_chan(false, false, true, ConnectStyle::BestBlockFirstSkippingBlocks);
408 do_test_unconf_chan(true, true, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
409 do_test_unconf_chan(false, true, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
410 do_test_unconf_chan(true, false, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
411 do_test_unconf_chan(false, false, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
413 do_test_unconf_chan(true, true, true, ConnectStyle::FullBlockViaListen);
414 do_test_unconf_chan(false, true, true, ConnectStyle::FullBlockViaListen);
415 do_test_unconf_chan(true, false, true, ConnectStyle::FullBlockViaListen);
416 do_test_unconf_chan(false, false, true, ConnectStyle::FullBlockViaListen);
420 fn test_set_outpoints_partial_claiming() {
421 // - remote party claim tx, new bump tx
422 // - disconnect remote claiming tx, new bump
423 // - disconnect tx, see no tx anymore
424 let chanmon_cfgs = create_chanmon_cfgs(2);
425 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
426 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
427 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
429 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000);
430 let (payment_preimage_1, payment_hash_1, ..) = route_payment(&nodes[1], &[&nodes[0]], 3_000_000);
431 let (payment_preimage_2, payment_hash_2, ..) = route_payment(&nodes[1], &[&nodes[0]], 3_000_000);
433 // Remote commitment txn with 4 outputs: to_local, to_remote, 2 outgoing HTLC
434 let remote_txn = get_local_commitment_txn!(nodes[1], chan.2);
435 assert_eq!(remote_txn.len(), 3);
436 assert_eq!(remote_txn[0].output.len(), 4);
437 assert_eq!(remote_txn[0].input.len(), 1);
438 assert_eq!(remote_txn[0].input[0].previous_output.txid, chan.3.txid());
439 check_spends!(remote_txn[1], remote_txn[0]);
440 check_spends!(remote_txn[2], remote_txn[0]);
442 // Connect blocks on node A to advance height towards TEST_FINAL_CLTV
443 // Provide node A with both preimage
444 nodes[0].node.claim_funds(payment_preimage_1);
445 expect_payment_claimed!(nodes[0], payment_hash_1, 3_000_000);
446 nodes[0].node.claim_funds(payment_preimage_2);
447 expect_payment_claimed!(nodes[0], payment_hash_2, 3_000_000);
448 check_added_monitors!(nodes[0], 2);
449 nodes[0].node.get_and_clear_pending_msg_events();
451 // Connect blocks on node A commitment transaction
452 mine_transaction(&nodes[0], &remote_txn[0]);
453 check_closed_broadcast!(nodes[0], true);
454 check_closed_event!(nodes[0], 1, ClosureReason::CommitmentTxConfirmed, [nodes[1].node.get_our_node_id()], 1000000);
455 check_added_monitors!(nodes[0], 1);
456 // Verify node A broadcast tx claiming both HTLCs
458 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
459 // ChannelMonitor: claim tx
460 assert_eq!(node_txn.len(), 1);
461 check_spends!(node_txn[0], remote_txn[0]);
462 assert_eq!(node_txn[0].input.len(), 2);
466 // Connect blocks on node B
467 connect_blocks(&nodes[1], TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + 1);
468 check_closed_broadcast!(nodes[1], true);
469 check_closed_event!(nodes[1], 1, ClosureReason::HTLCsTimedOut, [nodes[0].node.get_our_node_id()], 1000000);
470 check_added_monitors!(nodes[1], 1);
471 // Verify node B broadcast 2 HTLC-timeout txn
472 let partial_claim_tx = {
473 let mut node_txn = nodes[1].tx_broadcaster.unique_txn_broadcast();
474 assert_eq!(node_txn.len(), 3);
475 check_spends!(node_txn[0], chan.3);
476 check_spends!(node_txn[1], node_txn[0]);
477 check_spends!(node_txn[2], node_txn[0]);
478 assert_eq!(node_txn[1].input.len(), 1);
479 assert_eq!(node_txn[2].input.len(), 1);
480 assert_ne!(node_txn[1].input[0].previous_output, node_txn[2].input[0].previous_output);
484 // Broadcast partial claim on node A, should regenerate a claiming tx with HTLC dropped
485 mine_transaction(&nodes[0], &partial_claim_tx);
487 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
488 assert_eq!(node_txn.len(), 1);
489 check_spends!(node_txn[0], remote_txn[0]);
490 assert_eq!(node_txn[0].input.len(), 1); //dropped HTLC
493 nodes[0].node.get_and_clear_pending_msg_events();
495 // Disconnect last block on node A, should regenerate a claiming tx with HTLC dropped
496 disconnect_blocks(&nodes[0], 1);
498 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
499 assert_eq!(node_txn.len(), 1);
500 check_spends!(node_txn[0], remote_txn[0]);
501 assert_eq!(node_txn[0].input.len(), 2); //resurrected HTLC
505 //// Disconnect one more block and then reconnect multiple no transaction should be generated
506 disconnect_blocks(&nodes[0], 1);
507 connect_blocks(&nodes[0], 15);
509 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
510 assert_eq!(node_txn.len(), 0);
515 fn do_test_to_remote_after_local_detection(style: ConnectStyle) {
516 // In previous code, detection of to_remote outputs in a counterparty commitment transaction
517 // was dependent on whether a local commitment transaction had been seen on-chain previously.
518 // This resulted in some edge cases around not being able to generate a SpendableOutput event
521 // Here, we test this by first confirming one set of commitment transactions, then
522 // disconnecting them and reconnecting another. We then confirm them and check that the correct
523 // SpendableOutput event is generated.
524 let chanmon_cfgs = create_chanmon_cfgs(2);
525 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
526 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
527 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
529 *nodes[0].connect_style.borrow_mut() = style;
530 *nodes[1].connect_style.borrow_mut() = style;
532 let (_, _, chan_id, funding_tx) =
533 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 100_000_000);
534 let funding_outpoint = OutPoint { txid: funding_tx.txid(), index: 0 };
535 assert_eq!(ChannelId::v1_from_funding_outpoint(funding_outpoint), chan_id);
537 let remote_txn_a = get_local_commitment_txn!(nodes[0], chan_id);
538 let remote_txn_b = get_local_commitment_txn!(nodes[1], chan_id);
540 mine_transaction(&nodes[0], &remote_txn_a[0]);
541 mine_transaction(&nodes[1], &remote_txn_a[0]);
543 assert!(nodes[0].node.list_channels().is_empty());
544 check_closed_broadcast!(nodes[0], true);
545 check_added_monitors!(nodes[0], 1);
546 check_closed_event!(nodes[0], 1, ClosureReason::CommitmentTxConfirmed, [nodes[1].node.get_our_node_id()], 1000000);
547 assert!(nodes[1].node.list_channels().is_empty());
548 check_closed_broadcast!(nodes[1], true);
549 check_added_monitors!(nodes[1], 1);
550 check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed, [nodes[0].node.get_our_node_id()], 1000000);
552 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
553 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
555 disconnect_blocks(&nodes[0], 1);
556 disconnect_blocks(&nodes[1], 1);
558 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
559 assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
560 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
561 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
563 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
564 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
566 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
567 assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
568 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
569 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
571 mine_transaction(&nodes[0], &remote_txn_b[0]);
572 mine_transaction(&nodes[1], &remote_txn_b[0]);
574 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
575 assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
576 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
577 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
579 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
580 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
582 let mut node_a_spendable = nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events();
583 assert_eq!(node_a_spendable.len(), 1);
584 if let Event::SpendableOutputs { outputs, channel_id } = node_a_spendable.pop().unwrap() {
585 assert_eq!(outputs.len(), 1);
586 assert_eq!(channel_id, Some(chan_id));
587 let spend_tx = nodes[0].keys_manager.backing.spend_spendable_outputs(&[&outputs[0]], Vec::new(),
588 Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(), 253, None, &Secp256k1::new()).unwrap();
589 check_spends!(spend_tx, remote_txn_b[0]);
592 // nodes[1] is waiting for the to_self_delay to expire, which is many more than
593 // ANTI_REORG_DELAY. Instead, walk it back and confirm the original remote_txn_a commitment
594 // again and check that nodes[1] generates a similar spendable output.
595 // Technically a reorg of ANTI_REORG_DELAY violates our assumptions, so this is undefined by
596 // our API spec, but we currently handle this correctly and there's little reason we shouldn't
598 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
599 disconnect_blocks(&nodes[1], ANTI_REORG_DELAY);
600 mine_transaction(&nodes[1], &remote_txn_a[0]);
601 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
603 let mut node_b_spendable = nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events();
604 assert_eq!(node_b_spendable.len(), 1);
605 if let Event::SpendableOutputs { outputs, channel_id } = node_b_spendable.pop().unwrap() {
606 assert_eq!(outputs.len(), 1);
607 assert_eq!(channel_id, Some(chan_id));
608 let spend_tx = nodes[1].keys_manager.backing.spend_spendable_outputs(&[&outputs[0]], Vec::new(),
609 Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(), 253, None, &Secp256k1::new()).unwrap();
610 check_spends!(spend_tx, remote_txn_a[0]);
615 fn test_to_remote_after_local_detection() {
616 do_test_to_remote_after_local_detection(ConnectStyle::BestBlockFirst);
617 do_test_to_remote_after_local_detection(ConnectStyle::BestBlockFirstSkippingBlocks);
618 do_test_to_remote_after_local_detection(ConnectStyle::BestBlockFirstReorgsOnlyTip);
619 do_test_to_remote_after_local_detection(ConnectStyle::TransactionsFirst);
620 do_test_to_remote_after_local_detection(ConnectStyle::TransactionsFirstSkippingBlocks);
621 do_test_to_remote_after_local_detection(ConnectStyle::TransactionsFirstReorgsOnlyTip);
622 do_test_to_remote_after_local_detection(ConnectStyle::FullBlockViaListen);
626 fn test_htlc_preimage_claim_holder_commitment_after_counterparty_commitment_reorg() {
627 // We detect a counterparty commitment confirm onchain, followed by a reorg and a confirmation
628 // of a holder commitment. Then, if we learn of the preimage for an HTLC in both commitments,
629 // test that we only claim the currently confirmed commitment.
630 let chanmon_cfgs = create_chanmon_cfgs(2);
631 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
632 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None, None]);
633 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
635 let (_, _, chan_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 1);
637 // Route an HTLC which we will claim onchain with the preimage.
638 let (payment_preimage, payment_hash, ..) = route_payment(&nodes[0], &[&nodes[1]], 1_000_000);
640 // Force close with the latest counterparty commitment, confirm it, and reorg it with the latest
641 // holder commitment.
642 nodes[0].node.force_close_broadcasting_latest_txn(&chan_id, &nodes[1].node.get_our_node_id()).unwrap();
643 check_closed_broadcast(&nodes[0], 1, true);
644 check_added_monitors(&nodes[0], 1);
645 check_closed_event(&nodes[0], 1, ClosureReason::HolderForceClosed, false, &[nodes[1].node.get_our_node_id()], 100000);
647 nodes[1].node.force_close_broadcasting_latest_txn(&chan_id, &nodes[0].node.get_our_node_id()).unwrap();
648 check_closed_broadcast(&nodes[1], 1, true);
649 check_added_monitors(&nodes[1], 1);
650 check_closed_event(&nodes[1], 1, ClosureReason::HolderForceClosed, false, &[nodes[0].node.get_our_node_id()], 100000);
652 let mut txn = nodes[0].tx_broadcaster.txn_broadcast();
653 assert_eq!(txn.len(), 1);
654 let commitment_tx_a = txn.pop().unwrap();
655 check_spends!(commitment_tx_a, funding_tx);
657 let mut txn = nodes[1].tx_broadcaster.txn_broadcast();
658 assert_eq!(txn.len(), 1);
659 let commitment_tx_b = txn.pop().unwrap();
660 check_spends!(commitment_tx_b, funding_tx);
662 mine_transaction(&nodes[0], &commitment_tx_a);
663 mine_transaction(&nodes[1], &commitment_tx_a);
665 disconnect_blocks(&nodes[0], 1);
666 disconnect_blocks(&nodes[1], 1);
668 mine_transaction(&nodes[0], &commitment_tx_b);
669 mine_transaction(&nodes[1], &commitment_tx_b);
670 if nodes[1].connect_style.borrow().updates_best_block_first() {
671 let _ = nodes[1].tx_broadcaster.txn_broadcast();
674 // Provide the preimage now, such that we only claim from the holder commitment (since it's
675 // currently confirmed) and not the counterparty's.
676 get_monitor!(nodes[1], chan_id).provide_payment_preimage(
677 &payment_hash, &payment_preimage, &nodes[1].tx_broadcaster,
678 &LowerBoundedFeeEstimator(nodes[1].fee_estimator), &nodes[1].logger
681 let mut txn = nodes[1].tx_broadcaster.txn_broadcast();
682 assert_eq!(txn.len(), 1);
683 let htlc_success_tx = txn.pop().unwrap();
684 check_spends!(htlc_success_tx, commitment_tx_b);
688 fn test_htlc_preimage_claim_prev_counterparty_commitment_after_current_counterparty_commitment_reorg() {
689 // We detect a counterparty commitment confirm onchain, followed by a reorg and a
690 // confirmation of the previous (still unrevoked) counterparty commitment. Then, if we learn
691 // of the preimage for an HTLC in both commitments, test that we only claim the currently
692 // confirmed commitment.
693 let chanmon_cfgs = create_chanmon_cfgs(2);
694 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
695 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None, None]);
696 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
698 let (_, _, chan_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 1);
700 // Route an HTLC which we will claim onchain with the preimage.
701 let (payment_preimage, payment_hash, ..) = route_payment(&nodes[0], &[&nodes[1]], 1_000_000);
703 // Obtain the current commitment, which will become the previous after a fee update.
704 let prev_commitment_a = &get_local_commitment_txn!(nodes[0], chan_id)[0];
706 *nodes[0].fee_estimator.sat_per_kw.lock().unwrap() *= 4;
707 nodes[0].node.timer_tick_occurred();
708 check_added_monitors(&nodes[0], 1);
709 let mut msg_events = nodes[0].node.get_and_clear_pending_msg_events();
710 assert_eq!(msg_events.len(), 1);
711 let (update_fee, commit_sig) = if let MessageSendEvent::UpdateHTLCs { node_id, mut updates } = msg_events.pop().unwrap() {
712 assert_eq!(node_id, nodes[1].node.get_our_node_id());
713 (updates.update_fee.take().unwrap(), updates.commitment_signed)
715 panic!("Unexpected message send event");
718 // Handle the fee update on the other side, but don't send the last RAA such that the previous
719 // commitment is still valid (unrevoked).
720 nodes[1].node().handle_update_fee(&nodes[0].node.get_our_node_id(), &update_fee);
721 let _last_revoke_and_ack = commitment_signed_dance!(nodes[1], nodes[0], commit_sig, false, true, false, true);
723 // Force close with the latest commitment, confirm it, and reorg it with the previous commitment.
724 nodes[0].node.force_close_broadcasting_latest_txn(&chan_id, &nodes[1].node.get_our_node_id()).unwrap();
725 check_closed_broadcast(&nodes[0], 1, true);
726 check_added_monitors(&nodes[0], 1);
727 check_closed_event(&nodes[0], 1, ClosureReason::HolderForceClosed, false, &[nodes[1].node.get_our_node_id()], 100000);
729 let mut txn = nodes[0].tx_broadcaster.txn_broadcast();
730 assert_eq!(txn.len(), 1);
731 let current_commitment_a = txn.pop().unwrap();
732 assert_ne!(current_commitment_a.txid(), prev_commitment_a.txid());
733 check_spends!(current_commitment_a, funding_tx);
735 mine_transaction(&nodes[0], ¤t_commitment_a);
736 mine_transaction(&nodes[1], ¤t_commitment_a);
738 check_closed_broadcast(&nodes[1], 1, true);
739 check_added_monitors(&nodes[1], 1);
740 check_closed_event(&nodes[1], 1, ClosureReason::CommitmentTxConfirmed, false, &[nodes[0].node.get_our_node_id()], 100000);
742 disconnect_blocks(&nodes[0], 1);
743 disconnect_blocks(&nodes[1], 1);
745 mine_transaction(&nodes[0], &prev_commitment_a);
746 mine_transaction(&nodes[1], &prev_commitment_a);
748 // Provide the preimage now, such that we only claim from the previous commitment (since it's
749 // currently confirmed) and not the latest.
750 get_monitor!(nodes[1], chan_id).provide_payment_preimage(
751 &payment_hash, &payment_preimage, &nodes[1].tx_broadcaster,
752 &LowerBoundedFeeEstimator(nodes[1].fee_estimator), &nodes[1].logger
755 let mut txn = nodes[1].tx_broadcaster.txn_broadcast();
756 assert_eq!(txn.len(), 1);
757 let htlc_preimage_tx = txn.pop().unwrap();
758 check_spends!(htlc_preimage_tx, prev_commitment_a);
759 // Make sure it was indeed a preimage claim and not a revocation claim since the previous
760 // commitment (still unrevoked) is the currently confirmed closing transaction.
761 assert_eq!(htlc_preimage_tx.input[0].witness.second_to_last().unwrap(), &payment_preimage.0[..]);
764 fn do_test_retries_own_commitment_broadcast_after_reorg(anchors: bool, revoked_counterparty_commitment: bool) {
765 // Tests that a node will retry broadcasting its own commitment after seeing a confirmed
766 // counterparty commitment be reorged out.
767 let mut chanmon_cfgs = create_chanmon_cfgs(2);
768 if revoked_counterparty_commitment {
769 chanmon_cfgs[1].keys_manager.disable_revocation_policy_check = true;
771 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
772 let mut config = test_default_channel_config();
774 config.channel_handshake_config.negotiate_anchors_zero_fee_htlc_tx = true;
775 config.manually_accept_inbound_channels = true;
778 let new_chain_monitor;
779 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[Some(config), Some(config)]);
780 let nodes_1_deserialized;
781 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
783 let (_, _, chan_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 1);
785 // Route a payment so we have an HTLC to claim as well.
786 let _ = route_payment(&nodes[0], &[&nodes[1]], 1_000_000);
788 if revoked_counterparty_commitment {
789 // Trigger a fee update such that we advance the state. We will have B broadcast its state
790 // without the fee update.
791 let serialized_node = nodes[1].node.encode();
792 let serialized_monitor = get_monitor!(nodes[1], chan_id).encode();
794 *chanmon_cfgs[0].fee_estimator.sat_per_kw.lock().unwrap() += 1;
795 nodes[0].node.timer_tick_occurred();
796 check_added_monitors!(nodes[0], 1);
798 let fee_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
799 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &fee_update.update_fee.unwrap());
800 commitment_signed_dance!(nodes[1], nodes[0], fee_update.commitment_signed, false);
803 nodes[1], config, &serialized_node, &[&serialized_monitor], persister, new_chain_monitor, nodes_1_deserialized
807 // Connect blocks until the HTLC expiry is met, prompting a commitment broadcast by A.
808 connect_blocks(&nodes[0], TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + 1);
809 check_closed_broadcast(&nodes[0], 1, true);
810 check_added_monitors(&nodes[0], 1);
811 check_closed_event(&nodes[0], 1, ClosureReason::HTLCsTimedOut, false, &[nodes[1].node.get_our_node_id()], 100_000);
814 let mut txn = nodes[0].tx_broadcaster.txn_broadcast();
816 assert_eq!(txn.len(), 1);
817 let commitment_tx_a = txn.pop().unwrap();
818 check_spends!(commitment_tx_a, funding_tx);
820 assert_eq!(txn.len(), 2);
821 let htlc_tx_a = txn.pop().unwrap();
822 let commitment_tx_a = txn.pop().unwrap();
823 check_spends!(commitment_tx_a, funding_tx);
824 check_spends!(htlc_tx_a, commitment_tx_a);
828 // B will also broadcast its own commitment.
829 nodes[1].node.force_close_broadcasting_latest_txn(&chan_id, &nodes[0].node.get_our_node_id()).unwrap();
830 check_closed_broadcast(&nodes[1], 1, true);
831 check_added_monitors(&nodes[1], 1);
832 check_closed_event(&nodes[1], 1, ClosureReason::HolderForceClosed, false, &[nodes[0].node.get_our_node_id()], 100_000);
835 let mut txn = nodes[1].tx_broadcaster.txn_broadcast();
836 assert_eq!(txn.len(), 1);
837 let tx = txn.pop().unwrap();
838 check_spends!(tx, funding_tx);
842 // Confirm B's commitment, A should now broadcast an HTLC timeout for commitment B.
843 mine_transaction(&nodes[0], &commitment_b);
845 let mut txn = nodes[0].tx_broadcaster.txn_broadcast();
846 if nodes[0].connect_style.borrow().updates_best_block_first() {
847 // `commitment_a` and `htlc_timeout_a` are rebroadcast because the best block was
848 // updated prior to seeing `commitment_b`.
849 assert_eq!(txn.len(), if anchors { 2 } else { 3 });
850 check_spends!(txn.last().unwrap(), commitment_b);
852 assert_eq!(txn.len(), 1);
853 check_spends!(txn[0], commitment_b);
857 // Disconnect the block, allowing A to retry its own commitment. Note that we connect two
858 // blocks, one to get us back to the original height, and another to retry our pending claims.
859 disconnect_blocks(&nodes[0], 1);
860 connect_blocks(&nodes[0], 2);
862 let mut txn = nodes[0].tx_broadcaster.unique_txn_broadcast();
864 assert_eq!(txn.len(), 1);
865 check_spends!(txn[0], funding_tx);
867 assert_eq!(txn.len(), 2);
868 check_spends!(txn[0], txn[1]); // HTLC timeout A
869 check_spends!(txn[1], funding_tx); // Commitment A
870 assert_ne!(txn[1].txid(), commitment_b.txid());
876 fn test_retries_own_commitment_broadcast_after_reorg() {
877 do_test_retries_own_commitment_broadcast_after_reorg(false, false);
878 do_test_retries_own_commitment_broadcast_after_reorg(false, true);
879 do_test_retries_own_commitment_broadcast_after_reorg(true, false);
880 do_test_retries_own_commitment_broadcast_after_reorg(true, true);