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::ln::types::ChannelId;
19 use crate::sign::OutputSpender;
20 use crate::util::test_utils;
21 use crate::util::ser::Writeable;
22 use crate::util::string::UntrustedString;
24 use bitcoin::blockdata::script::Builder;
25 use bitcoin::blockdata::opcodes;
26 use bitcoin::secp256k1::Secp256k1;
28 use crate::prelude::*;
30 use crate::ln::functional_test_utils::*;
32 fn do_test_onchain_htlc_reorg(local_commitment: bool, claim: bool) {
33 // Our on-chain HTLC-claim learning has a few properties worth testing:
34 // * If an upstream HTLC is claimed with a preimage (both against our own commitment
35 // transaction our counterparty's), we claim it backwards immediately.
36 // * If an upstream HTLC is claimed with a timeout, we delay ANTI_REORG_DELAY before failing
37 // it backwards to ensure our counterparty can't claim with a preimage in a reorg.
39 // Here we test both properties in any combination based on the two bools passed in as
42 // If local_commitment is set, we first broadcast a local commitment containing an offered HTLC
43 // and an HTLC-Timeout tx, otherwise we broadcast a remote commitment containing a received
44 // HTLC and a local HTLC-Timeout tx spending it.
46 // We then either allow these transactions to confirm (if !claim) or we wait until one block
47 // before they otherwise would and reorg them out, confirming an HTLC-Success tx instead.
48 let chanmon_cfgs = create_chanmon_cfgs(3);
49 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
50 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
51 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
53 create_announced_chan_between_nodes(&nodes, 0, 1);
54 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
56 // Make sure all nodes are at the same starting height
57 connect_blocks(&nodes[0], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[0].best_block_info().1);
58 connect_blocks(&nodes[1], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[1].best_block_info().1);
59 connect_blocks(&nodes[2], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[2].best_block_info().1);
61 let (our_payment_preimage, our_payment_hash, ..) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1_000_000);
63 // Provide preimage to node 2 by claiming payment
64 nodes[2].node.claim_funds(our_payment_preimage);
65 expect_payment_claimed!(nodes[2], our_payment_hash, 1_000_000);
66 check_added_monitors!(nodes[2], 1);
67 get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
69 let claim_txn = if local_commitment {
70 // Broadcast node 1 commitment txn to broadcast the HTLC-Timeout
71 let node_1_commitment_txn = get_local_commitment_txn!(nodes[1], chan_2.2);
72 assert_eq!(node_1_commitment_txn.len(), 2); // 1 local commitment tx, 1 Outbound HTLC-Timeout
73 assert_eq!(node_1_commitment_txn[0].output.len(), 2); // to-self and Offered HTLC (to-remote/to-node-3 is dust)
74 check_spends!(node_1_commitment_txn[0], chan_2.3);
75 check_spends!(node_1_commitment_txn[1], node_1_commitment_txn[0]);
77 // Give node 2 node 1's transactions and get its response (claiming the HTLC instead).
78 connect_block(&nodes[2], &create_dummy_block(nodes[2].best_block_hash(), 42, node_1_commitment_txn.clone()));
79 check_added_monitors!(nodes[2], 1);
80 check_closed_broadcast!(nodes[2], true); // We should get a BroadcastChannelUpdate (and *only* a BroadcstChannelUpdate)
81 check_closed_event!(nodes[2], 1, ClosureReason::CommitmentTxConfirmed, [nodes[1].node.get_our_node_id()], 100000);
82 let node_2_commitment_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
83 assert_eq!(node_2_commitment_txn.len(), 1); // ChannelMonitor: 1 offered HTLC-Claim
84 check_spends!(node_2_commitment_txn[0], node_1_commitment_txn[0]);
86 // Make sure node 1's height is the same as the !local_commitment case
87 connect_blocks(&nodes[1], 1);
88 // Confirm node 1's commitment txn (and HTLC-Timeout) on node 1
89 connect_block(&nodes[1], &create_dummy_block(nodes[1].best_block_hash(), 42, node_1_commitment_txn.clone()));
91 // ...but return node 1's commitment tx in case claim is set and we're preparing to reorg
92 vec![node_1_commitment_txn[0].clone(), node_2_commitment_txn[0].clone()]
94 // Broadcast node 2 commitment txn
95 let mut node_2_commitment_txn = get_local_commitment_txn!(nodes[2], chan_2.2);
96 assert_eq!(node_2_commitment_txn.len(), 2); // 1 local commitment tx, 1 Received HTLC-Claim
97 assert_eq!(node_2_commitment_txn[0].output.len(), 2); // to-remote and Received HTLC (to-self is dust)
98 check_spends!(node_2_commitment_txn[0], chan_2.3);
99 check_spends!(node_2_commitment_txn[1], node_2_commitment_txn[0]);
101 // Give node 1 node 2's commitment transaction and get its response (timing the HTLC out)
102 mine_transaction(&nodes[1], &node_2_commitment_txn[0]);
103 connect_blocks(&nodes[1], TEST_FINAL_CLTV); // Confirm blocks until the HTLC expires
104 let node_1_commitment_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
105 assert_eq!(node_1_commitment_txn.len(), 1); // ChannelMonitor: 1 offered HTLC-Timeout
106 check_spends!(node_1_commitment_txn[0], node_2_commitment_txn[0]);
108 // Confirm node 1's HTLC-Timeout on node 1
109 mine_transaction(&nodes[1], &node_1_commitment_txn[0]);
110 // ...but return node 2's commitment tx (and claim) in case claim is set and we're preparing to reorg
111 vec![node_2_commitment_txn.pop().unwrap()]
113 check_added_monitors!(nodes[1], 1);
114 check_closed_broadcast!(nodes[1], true); // We should get a BroadcastChannelUpdate (and *only* a BroadcstChannelUpdate)
115 check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed, [nodes[2].node.get_our_node_id()], 100000);
116 // Connect ANTI_REORG_DELAY - 2 blocks, giving us a confirmation count of ANTI_REORG_DELAY - 1.
117 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 2);
118 check_added_monitors!(nodes[1], 0);
119 assert_eq!(nodes[1].node.get_and_clear_pending_events().len(), 0);
122 // Disconnect Node 1's HTLC-Timeout which was connected above
123 disconnect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
125 connect_block(&nodes[1], &create_dummy_block(nodes[1].best_block_hash(), 42, claim_txn));
127 // ChannelManager only polls chain::Watch::release_pending_monitor_events when we
128 // probe it for events, so we probe non-message events here (which should just be the
129 // PaymentForwarded event).
130 expect_payment_forwarded!(nodes[1], nodes[0], nodes[2], Some(1000), true, true);
132 // Confirm the timeout tx and check that we fail the HTLC backwards
133 connect_block(&nodes[1], &create_dummy_block(nodes[1].best_block_hash(), 42, Vec::new()));
134 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 }]);
137 check_added_monitors!(nodes[1], 1);
138 // Which should result in an immediate claim/fail of the HTLC:
139 let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
141 assert_eq!(htlc_updates.update_fulfill_htlcs.len(), 1);
142 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fulfill_htlcs[0]);
144 assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
145 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]);
147 commitment_signed_dance!(nodes[0], nodes[1], htlc_updates.commitment_signed, false, true);
149 expect_payment_sent!(nodes[0], our_payment_preimage);
151 expect_payment_failed_with_update!(nodes[0], our_payment_hash, false, chan_2.0.contents.short_channel_id, true);
156 fn test_onchain_htlc_claim_reorg_local_commitment() {
157 do_test_onchain_htlc_reorg(true, true);
160 fn test_onchain_htlc_timeout_delay_local_commitment() {
161 do_test_onchain_htlc_reorg(true, false);
164 fn test_onchain_htlc_claim_reorg_remote_commitment() {
165 do_test_onchain_htlc_reorg(false, true);
168 fn test_onchain_htlc_timeout_delay_remote_commitment() {
169 do_test_onchain_htlc_reorg(false, false);
173 fn test_counterparty_revoked_reorg() {
174 // Test what happens when a revoked counterparty transaction is broadcast but then reorg'd out
175 // of the main chain. Specifically, HTLCs in the latest commitment transaction which are not
176 // included in the revoked commitment transaction should not be considered failed, and should
177 // still be claim-from-able after the reorg.
178 let chanmon_cfgs = create_chanmon_cfgs(2);
179 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
180 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
181 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
183 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 500_000_000);
185 // Get the initial commitment transaction for broadcast, before any HTLCs are added at all.
186 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan.2);
187 assert_eq!(revoked_local_txn.len(), 1);
189 // Now add two HTLCs in each direction, one dust and one not.
190 route_payment(&nodes[0], &[&nodes[1]], 5_000_000);
191 route_payment(&nodes[0], &[&nodes[1]], 5_000);
192 let (payment_preimage_3, payment_hash_3, ..) = route_payment(&nodes[1], &[&nodes[0]], 4_000_000);
193 let payment_hash_4 = route_payment(&nodes[1], &[&nodes[0]], 4_000).1;
195 nodes[0].node.claim_funds(payment_preimage_3);
196 let _ = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
197 check_added_monitors!(nodes[0], 1);
198 expect_payment_claimed!(nodes[0], payment_hash_3, 4_000_000);
200 let mut unrevoked_local_txn = get_local_commitment_txn!(nodes[0], chan.2);
201 assert_eq!(unrevoked_local_txn.len(), 3); // commitment + 2 HTLC txn
202 // Sort the unrevoked transactions in reverse order, ie commitment tx, then HTLC 1 then HTLC 3
203 unrevoked_local_txn.sort_unstable_by_key(|tx| 1_000_000 - tx.output.iter().map(|outp| outp.value.to_sat()).sum::<u64>());
205 // Now mine A's old commitment transaction, which should close the channel, but take no action
206 // on any of the HTLCs, at least until we get six confirmations (which we won't get).
207 mine_transaction(&nodes[1], &revoked_local_txn[0]);
208 check_added_monitors!(nodes[1], 1);
209 check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed, [nodes[0].node.get_our_node_id()], 1000000);
210 check_closed_broadcast!(nodes[1], true);
212 // Connect up to one block before the revoked transaction would be considered final, then do a
213 // reorg that disconnects the full chain and goes up to the height at which the revoked
214 // transaction would be final.
215 let theoretical_conf_height = nodes[1].best_block_info().1 + ANTI_REORG_DELAY - 1;
216 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 2);
217 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
218 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
220 disconnect_all_blocks(&nodes[1]);
221 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
222 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
224 connect_blocks(&nodes[1], theoretical_conf_height);
225 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
226 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
228 // Now connect A's latest commitment transaction instead and resolve the HTLCs
229 mine_transaction(&nodes[1], &unrevoked_local_txn[0]);
230 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
231 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
233 // Connect the HTLC claim transaction for HTLC 3
234 mine_transaction(&nodes[1], &unrevoked_local_txn[2]);
235 expect_payment_sent(&nodes[1], payment_preimage_3, None, true, false);
236 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
238 // Connect blocks to confirm the unrevoked commitment transaction
239 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 2);
240 expect_payment_failed!(nodes[1], payment_hash_4, false);
243 fn do_test_unconf_chan(reload_node: bool, reorg_after_reload: bool, use_funding_unconfirmed: bool, connect_style: ConnectStyle) {
244 // After creating a chan between nodes, we disconnect all blocks previously seen to force a
245 // channel close on nodes[0] side. We also use this to provide very basic testing of logic
246 // around freeing background events which store monitor updates during block_[dis]connected.
247 let chanmon_cfgs = create_chanmon_cfgs(2);
248 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
250 let new_chain_monitor;
252 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
253 let nodes_0_deserialized;
255 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
256 *nodes[0].connect_style.borrow_mut() = connect_style;
258 let chan_conf_height = core::cmp::max(nodes[0].best_block_info().1 + 1, nodes[1].best_block_info().1 + 1);
259 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
262 let per_peer_state = nodes[0].node.per_peer_state.read().unwrap();
263 let peer_state = per_peer_state.get(&nodes[1].node.get_our_node_id()).unwrap().lock().unwrap();
264 assert_eq!(peer_state.channel_by_id.len(), 1);
265 assert_eq!(nodes[0].node.short_to_chan_info.read().unwrap().len(), 2);
268 assert_eq!(nodes[0].node.list_channels()[0].confirmations, Some(10));
269 assert_eq!(nodes[1].node.list_channels()[0].confirmations, Some(10));
271 if !reorg_after_reload {
272 if use_funding_unconfirmed {
273 let relevant_txids = nodes[0].node.get_relevant_txids();
274 assert_eq!(relevant_txids.len(), 1);
275 let block_hash_opt = relevant_txids[0].2;
276 let expected_hash = nodes[0].get_block_header(chan_conf_height).block_hash();
277 assert_eq!(relevant_txids[0].1, chan_conf_height);
278 assert_eq!(block_hash_opt, Some(expected_hash));
279 let txid = relevant_txids[0].0;
280 assert_eq!(txid, chan.3.txid());
281 nodes[0].node.transaction_unconfirmed(&txid);
282 assert_eq!(nodes[0].node.list_usable_channels().len(), 0);
283 } else if connect_style == ConnectStyle::FullBlockViaListen {
284 disconnect_blocks(&nodes[0], CHAN_CONFIRM_DEPTH - 1);
285 assert_eq!(nodes[0].node.list_usable_channels().len(), 1);
286 assert_eq!(nodes[0].node.list_channels()[0].confirmations, Some(1));
287 disconnect_blocks(&nodes[0], 1);
288 assert_eq!(nodes[0].node.list_usable_channels().len(), 0);
290 disconnect_all_blocks(&nodes[0]);
291 assert_eq!(nodes[0].node.list_usable_channels().len(), 0);
294 let relevant_txids = nodes[0].node.get_relevant_txids();
295 assert_eq!(relevant_txids.len(), 0);
298 let per_peer_state = nodes[0].node.per_peer_state.read().unwrap();
299 let peer_state = per_peer_state.get(&nodes[1].node.get_our_node_id()).unwrap().lock().unwrap();
300 assert_eq!(peer_state.channel_by_id.len(), 0);
301 assert_eq!(nodes[0].node.short_to_chan_info.read().unwrap().len(), 0);
306 // Since we currently have a background event pending, it's good to test that we survive a
307 // serialization roundtrip. Further, this tests the somewhat awkward edge-case of dropping
308 // the Channel object from the ChannelManager, but still having a monitor event pending for
309 // it when we go to deserialize, and then use the ChannelManager.
310 let nodes_0_serialized = nodes[0].node.encode();
311 let chan_0_monitor_serialized = get_monitor!(nodes[0], chan.2).encode();
313 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);
314 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
317 if reorg_after_reload {
318 if use_funding_unconfirmed {
319 let relevant_txids = nodes[0].node.get_relevant_txids();
320 assert_eq!(relevant_txids.len(), 1);
321 let block_hash_opt = relevant_txids[0].2;
322 let expected_hash = nodes[0].get_block_header(chan_conf_height).block_hash();
323 assert_eq!(chan_conf_height, relevant_txids[0].1);
324 assert_eq!(block_hash_opt, Some(expected_hash));
325 let txid = relevant_txids[0].0;
326 assert_eq!(txid, chan.3.txid());
327 nodes[0].node.transaction_unconfirmed(&txid);
328 assert_eq!(nodes[0].node.list_channels().len(), 0);
329 } else if connect_style == ConnectStyle::FullBlockViaListen {
330 disconnect_blocks(&nodes[0], CHAN_CONFIRM_DEPTH - 1);
331 assert_eq!(nodes[0].node.list_channels().len(), 1);
332 assert_eq!(nodes[0].node.list_channels()[0].confirmations, Some(1));
333 disconnect_blocks(&nodes[0], 1);
334 assert_eq!(nodes[0].node.list_usable_channels().len(), 0);
336 disconnect_all_blocks(&nodes[0]);
337 assert_eq!(nodes[0].node.list_usable_channels().len(), 0);
340 let relevant_txids = nodes[0].node.get_relevant_txids();
341 assert_eq!(relevant_txids.len(), 0);
344 let per_peer_state = nodes[0].node.per_peer_state.read().unwrap();
345 let peer_state = per_peer_state.get(&nodes[1].node.get_our_node_id()).unwrap().lock().unwrap();
346 assert_eq!(peer_state.channel_by_id.len(), 0);
347 assert_eq!(nodes[0].node.short_to_chan_info.read().unwrap().len(), 0);
350 // With expect_channel_force_closed set the TestChainMonitor will enforce that the next update
351 // is a ChannelForcClosed on the right channel with should_broadcast set.
352 *nodes[0].chain_monitor.expect_channel_force_closed.lock().unwrap() = Some((chan.2, true));
353 nodes[0].node.test_process_background_events(); // Required to free the pending background monitor update
354 check_added_monitors!(nodes[0], 1);
355 let expected_err = "Funding transaction was un-confirmed. Locked at 6 confs, now have 0 confs.";
356 if reorg_after_reload || !reload_node {
357 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.");
358 check_added_monitors!(nodes[1], 1);
359 check_closed_event!(nodes[1], 1, ClosureReason::CounterpartyForceClosed { peer_msg: UntrustedString(format!("Channel closed because of an exception: {}", expected_err)) }
360 , [nodes[0].node.get_our_node_id()], 100000);
363 check_closed_event!(nodes[0], 1, ClosureReason::ProcessingError { err: expected_err.to_owned() },
364 [nodes[1].node.get_our_node_id()], 100000);
365 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
366 nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
368 // Now check that we can create a new channel
369 if reload_node && nodes[0].node.per_peer_state.read().unwrap().len() == 0 {
370 // If we dropped the channel before reloading the node, nodes[1] was also dropped from
371 // nodes[0] storage, and hence not connected again on startup. We therefore need to
372 // reconnect to the node before attempting to create a new channel.
373 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &Init {
374 features: nodes[1].node.init_features(), networks: None, remote_network_address: None
377 create_announced_chan_between_nodes(&nodes, 0, 1);
378 send_payment(&nodes[0], &[&nodes[1]], 8000000);
382 fn test_unconf_chan() {
383 do_test_unconf_chan(true, true, false, ConnectStyle::BestBlockFirstSkippingBlocks);
384 do_test_unconf_chan(false, true, false, ConnectStyle::BestBlockFirstSkippingBlocks);
385 do_test_unconf_chan(true, false, false, ConnectStyle::BestBlockFirstSkippingBlocks);
386 do_test_unconf_chan(false, false, false, ConnectStyle::BestBlockFirstSkippingBlocks);
388 do_test_unconf_chan(true, true, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
389 do_test_unconf_chan(false, true, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
390 do_test_unconf_chan(true, false, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
391 do_test_unconf_chan(false, false, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
395 fn test_unconf_chan_via_listen() {
396 do_test_unconf_chan(true, true, false, ConnectStyle::FullBlockViaListen);
397 do_test_unconf_chan(false, true, false, ConnectStyle::FullBlockViaListen);
398 do_test_unconf_chan(true, false, false, ConnectStyle::FullBlockViaListen);
399 do_test_unconf_chan(false, false, false, ConnectStyle::FullBlockViaListen);
403 fn test_unconf_chan_via_funding_unconfirmed() {
404 do_test_unconf_chan(true, true, true, ConnectStyle::BestBlockFirstSkippingBlocks);
405 do_test_unconf_chan(false, true, true, ConnectStyle::BestBlockFirstSkippingBlocks);
406 do_test_unconf_chan(true, false, true, ConnectStyle::BestBlockFirstSkippingBlocks);
407 do_test_unconf_chan(false, false, true, ConnectStyle::BestBlockFirstSkippingBlocks);
409 do_test_unconf_chan(true, true, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
410 do_test_unconf_chan(false, true, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
411 do_test_unconf_chan(true, false, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
412 do_test_unconf_chan(false, false, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
414 do_test_unconf_chan(true, true, true, ConnectStyle::FullBlockViaListen);
415 do_test_unconf_chan(false, true, true, ConnectStyle::FullBlockViaListen);
416 do_test_unconf_chan(true, false, true, ConnectStyle::FullBlockViaListen);
417 do_test_unconf_chan(false, false, true, ConnectStyle::FullBlockViaListen);
421 fn test_set_outpoints_partial_claiming() {
422 // - remote party claim tx, new bump tx
423 // - disconnect remote claiming tx, new bump
424 // - disconnect tx, see no tx anymore
425 let chanmon_cfgs = create_chanmon_cfgs(2);
426 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
427 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
428 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
430 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000);
431 let (payment_preimage_1, payment_hash_1, ..) = route_payment(&nodes[1], &[&nodes[0]], 3_000_000);
432 let (payment_preimage_2, payment_hash_2, ..) = route_payment(&nodes[1], &[&nodes[0]], 3_000_000);
434 // Remote commitment txn with 4 outputs: to_local, to_remote, 2 outgoing HTLC
435 let remote_txn = get_local_commitment_txn!(nodes[1], chan.2);
436 assert_eq!(remote_txn.len(), 3);
437 assert_eq!(remote_txn[0].output.len(), 4);
438 assert_eq!(remote_txn[0].input.len(), 1);
439 assert_eq!(remote_txn[0].input[0].previous_output.txid, chan.3.txid());
440 check_spends!(remote_txn[1], remote_txn[0]);
441 check_spends!(remote_txn[2], remote_txn[0]);
443 // Connect blocks on node A to advance height towards TEST_FINAL_CLTV
444 // Provide node A with both preimage
445 nodes[0].node.claim_funds(payment_preimage_1);
446 expect_payment_claimed!(nodes[0], payment_hash_1, 3_000_000);
447 nodes[0].node.claim_funds(payment_preimage_2);
448 expect_payment_claimed!(nodes[0], payment_hash_2, 3_000_000);
449 check_added_monitors!(nodes[0], 2);
450 nodes[0].node.get_and_clear_pending_msg_events();
452 // Connect blocks on node A commitment transaction
453 mine_transaction(&nodes[0], &remote_txn[0]);
454 check_closed_broadcast!(nodes[0], true);
455 check_closed_event!(nodes[0], 1, ClosureReason::CommitmentTxConfirmed, [nodes[1].node.get_our_node_id()], 1000000);
456 check_added_monitors!(nodes[0], 1);
457 // Verify node A broadcast tx claiming both HTLCs
459 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
460 // ChannelMonitor: claim tx
461 assert_eq!(node_txn.len(), 1);
462 check_spends!(node_txn[0], remote_txn[0]);
463 assert_eq!(node_txn[0].input.len(), 2);
467 // Connect blocks on node B
468 connect_blocks(&nodes[1], TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + 1);
469 check_closed_broadcast!(nodes[1], true);
470 check_closed_event!(nodes[1], 1, ClosureReason::HTLCsTimedOut, [nodes[0].node.get_our_node_id()], 1000000);
471 check_added_monitors!(nodes[1], 1);
472 // Verify node B broadcast 2 HTLC-timeout txn
473 let partial_claim_tx = {
474 let mut node_txn = nodes[1].tx_broadcaster.unique_txn_broadcast();
475 assert_eq!(node_txn.len(), 3);
476 check_spends!(node_txn[0], chan.3);
477 check_spends!(node_txn[1], node_txn[0]);
478 check_spends!(node_txn[2], node_txn[0]);
479 assert_eq!(node_txn[1].input.len(), 1);
480 assert_eq!(node_txn[2].input.len(), 1);
481 assert_ne!(node_txn[1].input[0].previous_output, node_txn[2].input[0].previous_output);
485 // Broadcast partial claim on node A, should regenerate a claiming tx with HTLC dropped
486 mine_transaction(&nodes[0], &partial_claim_tx);
488 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
489 assert_eq!(node_txn.len(), 1);
490 check_spends!(node_txn[0], remote_txn[0]);
491 assert_eq!(node_txn[0].input.len(), 1); //dropped HTLC
494 nodes[0].node.get_and_clear_pending_msg_events();
496 // Disconnect last block on node A, should regenerate a claiming tx with HTLC dropped
497 disconnect_blocks(&nodes[0], 1);
499 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
500 assert_eq!(node_txn.len(), 1);
501 check_spends!(node_txn[0], remote_txn[0]);
502 assert_eq!(node_txn[0].input.len(), 2); //resurrected HTLC
506 //// Disconnect one more block and then reconnect multiple no transaction should be generated
507 disconnect_blocks(&nodes[0], 1);
508 connect_blocks(&nodes[0], 15);
510 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
511 assert_eq!(node_txn.len(), 0);
516 fn do_test_to_remote_after_local_detection(style: ConnectStyle) {
517 // In previous code, detection of to_remote outputs in a counterparty commitment transaction
518 // was dependent on whether a local commitment transaction had been seen on-chain previously.
519 // This resulted in some edge cases around not being able to generate a SpendableOutput event
522 // Here, we test this by first confirming one set of commitment transactions, then
523 // disconnecting them and reconnecting another. We then confirm them and check that the correct
524 // SpendableOutput event is generated.
525 let chanmon_cfgs = create_chanmon_cfgs(2);
526 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
527 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
528 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
530 *nodes[0].connect_style.borrow_mut() = style;
531 *nodes[1].connect_style.borrow_mut() = style;
533 let (_, _, chan_id, funding_tx) =
534 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 100_000_000);
535 let funding_outpoint = OutPoint { txid: funding_tx.txid(), index: 0 };
536 assert_eq!(ChannelId::v1_from_funding_outpoint(funding_outpoint), chan_id);
538 let remote_txn_a = get_local_commitment_txn!(nodes[0], chan_id);
539 let remote_txn_b = get_local_commitment_txn!(nodes[1], chan_id);
541 mine_transaction(&nodes[0], &remote_txn_a[0]);
542 mine_transaction(&nodes[1], &remote_txn_a[0]);
544 assert!(nodes[0].node.list_channels().is_empty());
545 check_closed_broadcast!(nodes[0], true);
546 check_added_monitors!(nodes[0], 1);
547 check_closed_event!(nodes[0], 1, ClosureReason::CommitmentTxConfirmed, [nodes[1].node.get_our_node_id()], 1000000);
548 assert!(nodes[1].node.list_channels().is_empty());
549 check_closed_broadcast!(nodes[1], true);
550 check_added_monitors!(nodes[1], 1);
551 check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed, [nodes[0].node.get_our_node_id()], 1000000);
553 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
554 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
556 disconnect_blocks(&nodes[0], 1);
557 disconnect_blocks(&nodes[1], 1);
559 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
560 assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
561 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
562 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
564 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
565 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
567 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
568 assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
569 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
570 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
572 mine_transaction(&nodes[0], &remote_txn_b[0]);
573 mine_transaction(&nodes[1], &remote_txn_b[0]);
575 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
576 assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
577 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
578 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
580 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
581 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
583 let mut node_a_spendable = nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events();
584 assert_eq!(node_a_spendable.len(), 1);
585 if let Event::SpendableOutputs { outputs, channel_id } = node_a_spendable.pop().unwrap() {
586 assert_eq!(outputs.len(), 1);
587 assert_eq!(channel_id, Some(chan_id));
588 let spend_tx = nodes[0].keys_manager.backing.spend_spendable_outputs(&[&outputs[0]], Vec::new(),
589 Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(), 253, None, &Secp256k1::new()).unwrap();
590 check_spends!(spend_tx, remote_txn_b[0]);
593 // nodes[1] is waiting for the to_self_delay to expire, which is many more than
594 // ANTI_REORG_DELAY. Instead, walk it back and confirm the original remote_txn_a commitment
595 // again and check that nodes[1] generates a similar spendable output.
596 // Technically a reorg of ANTI_REORG_DELAY violates our assumptions, so this is undefined by
597 // our API spec, but we currently handle this correctly and there's little reason we shouldn't
599 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
600 disconnect_blocks(&nodes[1], ANTI_REORG_DELAY);
601 mine_transaction(&nodes[1], &remote_txn_a[0]);
602 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
604 let mut node_b_spendable = nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events();
605 assert_eq!(node_b_spendable.len(), 1);
606 if let Event::SpendableOutputs { outputs, channel_id } = node_b_spendable.pop().unwrap() {
607 assert_eq!(outputs.len(), 1);
608 assert_eq!(channel_id, Some(chan_id));
609 let spend_tx = nodes[1].keys_manager.backing.spend_spendable_outputs(&[&outputs[0]], Vec::new(),
610 Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(), 253, None, &Secp256k1::new()).unwrap();
611 check_spends!(spend_tx, remote_txn_a[0]);
616 fn test_to_remote_after_local_detection() {
617 do_test_to_remote_after_local_detection(ConnectStyle::BestBlockFirst);
618 do_test_to_remote_after_local_detection(ConnectStyle::BestBlockFirstSkippingBlocks);
619 do_test_to_remote_after_local_detection(ConnectStyle::BestBlockFirstReorgsOnlyTip);
620 do_test_to_remote_after_local_detection(ConnectStyle::TransactionsFirst);
621 do_test_to_remote_after_local_detection(ConnectStyle::TransactionsFirstSkippingBlocks);
622 do_test_to_remote_after_local_detection(ConnectStyle::TransactionsFirstReorgsOnlyTip);
623 do_test_to_remote_after_local_detection(ConnectStyle::FullBlockViaListen);
627 fn test_htlc_preimage_claim_holder_commitment_after_counterparty_commitment_reorg() {
628 // We detect a counterparty commitment confirm onchain, followed by a reorg and a confirmation
629 // of a holder commitment. Then, if we learn of the preimage for an HTLC in both commitments,
630 // test that we only claim the currently confirmed commitment.
631 let chanmon_cfgs = create_chanmon_cfgs(2);
632 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
633 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None, None]);
634 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
636 let (_, _, chan_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 1);
638 // Route an HTLC which we will claim onchain with the preimage.
639 let (payment_preimage, payment_hash, ..) = route_payment(&nodes[0], &[&nodes[1]], 1_000_000);
640 let error_message = "Channel force-closed";
642 // Force close with the latest counterparty commitment, confirm it, and reorg it with the latest
643 // holder commitment.
644 nodes[0].node.force_close_broadcasting_latest_txn(&chan_id, &nodes[1].node.get_our_node_id(), error_message.to_string()).unwrap();
645 check_closed_broadcast(&nodes[0], 1, true);
646 check_added_monitors(&nodes[0], 1);
647 check_closed_event(&nodes[0], 1, ClosureReason::HolderForceClosed, false, &[nodes[1].node.get_our_node_id()], 100000);
649 nodes[1].node.force_close_broadcasting_latest_txn(&chan_id, &nodes[0].node.get_our_node_id(), error_message.to_string()).unwrap();
650 check_closed_broadcast(&nodes[1], 1, true);
651 check_added_monitors(&nodes[1], 1);
652 check_closed_event(&nodes[1], 1, ClosureReason::HolderForceClosed, false, &[nodes[0].node.get_our_node_id()], 100000);
654 let mut txn = nodes[0].tx_broadcaster.txn_broadcast();
655 assert_eq!(txn.len(), 1);
656 let commitment_tx_a = txn.pop().unwrap();
657 check_spends!(commitment_tx_a, funding_tx);
659 let mut txn = nodes[1].tx_broadcaster.txn_broadcast();
660 assert_eq!(txn.len(), 1);
661 let commitment_tx_b = txn.pop().unwrap();
662 check_spends!(commitment_tx_b, funding_tx);
664 mine_transaction(&nodes[0], &commitment_tx_a);
665 mine_transaction(&nodes[1], &commitment_tx_a);
667 disconnect_blocks(&nodes[0], 1);
668 disconnect_blocks(&nodes[1], 1);
670 mine_transaction(&nodes[0], &commitment_tx_b);
671 mine_transaction(&nodes[1], &commitment_tx_b);
672 if nodes[1].connect_style.borrow().updates_best_block_first() {
673 let _ = nodes[1].tx_broadcaster.txn_broadcast();
676 // Provide the preimage now, such that we only claim from the holder commitment (since it's
677 // currently confirmed) and not the counterparty's.
678 get_monitor!(nodes[1], chan_id).provide_payment_preimage(
679 &payment_hash, &payment_preimage, &nodes[1].tx_broadcaster,
680 &LowerBoundedFeeEstimator(nodes[1].fee_estimator), &nodes[1].logger
683 let mut txn = nodes[1].tx_broadcaster.txn_broadcast();
684 assert_eq!(txn.len(), 1);
685 let htlc_success_tx = txn.pop().unwrap();
686 check_spends!(htlc_success_tx, commitment_tx_b);
690 fn test_htlc_preimage_claim_prev_counterparty_commitment_after_current_counterparty_commitment_reorg() {
691 // We detect a counterparty commitment confirm onchain, followed by a reorg and a
692 // confirmation of the previous (still unrevoked) counterparty commitment. Then, if we learn
693 // of the preimage for an HTLC in both commitments, test that we only claim the currently
694 // confirmed commitment.
695 let chanmon_cfgs = create_chanmon_cfgs(2);
696 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
697 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None, None]);
698 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
700 let (_, _, chan_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 1);
702 // Route an HTLC which we will claim onchain with the preimage.
703 let (payment_preimage, payment_hash, ..) = route_payment(&nodes[0], &[&nodes[1]], 1_000_000);
705 // Obtain the current commitment, which will become the previous after a fee update.
706 let prev_commitment_a = &get_local_commitment_txn!(nodes[0], chan_id)[0];
708 *nodes[0].fee_estimator.sat_per_kw.lock().unwrap() *= 4;
709 nodes[0].node.timer_tick_occurred();
710 check_added_monitors(&nodes[0], 1);
711 let mut msg_events = nodes[0].node.get_and_clear_pending_msg_events();
712 assert_eq!(msg_events.len(), 1);
713 let (update_fee, commit_sig) = if let MessageSendEvent::UpdateHTLCs { node_id, mut updates } = msg_events.pop().unwrap() {
714 assert_eq!(node_id, nodes[1].node.get_our_node_id());
715 (updates.update_fee.take().unwrap(), updates.commitment_signed)
717 panic!("Unexpected message send event");
720 // Handle the fee update on the other side, but don't send the last RAA such that the previous
721 // commitment is still valid (unrevoked).
722 nodes[1].node().handle_update_fee(&nodes[0].node.get_our_node_id(), &update_fee);
723 let _last_revoke_and_ack = commitment_signed_dance!(nodes[1], nodes[0], commit_sig, false, true, false, true);
724 let error_message = "Channel force-closed";
726 // Force close with the latest commitment, confirm it, and reorg it with the previous commitment.
727 nodes[0].node.force_close_broadcasting_latest_txn(&chan_id, &nodes[1].node.get_our_node_id(), error_message.to_string()).unwrap();
728 check_closed_broadcast(&nodes[0], 1, true);
729 check_added_monitors(&nodes[0], 1);
730 check_closed_event(&nodes[0], 1, ClosureReason::HolderForceClosed, false, &[nodes[1].node.get_our_node_id()], 100000);
732 let mut txn = nodes[0].tx_broadcaster.txn_broadcast();
733 assert_eq!(txn.len(), 1);
734 let current_commitment_a = txn.pop().unwrap();
735 assert_ne!(current_commitment_a.txid(), prev_commitment_a.txid());
736 check_spends!(current_commitment_a, funding_tx);
738 mine_transaction(&nodes[0], ¤t_commitment_a);
739 mine_transaction(&nodes[1], ¤t_commitment_a);
741 check_closed_broadcast(&nodes[1], 1, true);
742 check_added_monitors(&nodes[1], 1);
743 check_closed_event(&nodes[1], 1, ClosureReason::CommitmentTxConfirmed, false, &[nodes[0].node.get_our_node_id()], 100000);
745 disconnect_blocks(&nodes[0], 1);
746 disconnect_blocks(&nodes[1], 1);
748 mine_transaction(&nodes[0], &prev_commitment_a);
749 mine_transaction(&nodes[1], &prev_commitment_a);
751 // Provide the preimage now, such that we only claim from the previous commitment (since it's
752 // currently confirmed) and not the latest.
753 get_monitor!(nodes[1], chan_id).provide_payment_preimage(
754 &payment_hash, &payment_preimage, &nodes[1].tx_broadcaster,
755 &LowerBoundedFeeEstimator(nodes[1].fee_estimator), &nodes[1].logger
758 let mut txn = nodes[1].tx_broadcaster.txn_broadcast();
759 assert_eq!(txn.len(), 1);
760 let htlc_preimage_tx = txn.pop().unwrap();
761 check_spends!(htlc_preimage_tx, prev_commitment_a);
762 // Make sure it was indeed a preimage claim and not a revocation claim since the previous
763 // commitment (still unrevoked) is the currently confirmed closing transaction.
764 assert_eq!(htlc_preimage_tx.input[0].witness.second_to_last().unwrap(), &payment_preimage.0[..]);
767 fn do_test_retries_own_commitment_broadcast_after_reorg(anchors: bool, revoked_counterparty_commitment: bool) {
768 // Tests that a node will retry broadcasting its own commitment after seeing a confirmed
769 // counterparty commitment be reorged out.
770 let mut chanmon_cfgs = create_chanmon_cfgs(2);
771 if revoked_counterparty_commitment {
772 chanmon_cfgs[1].keys_manager.disable_revocation_policy_check = true;
774 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
775 let mut config = test_default_channel_config();
777 config.channel_handshake_config.negotiate_anchors_zero_fee_htlc_tx = true;
778 config.manually_accept_inbound_channels = true;
781 let new_chain_monitor;
782 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[Some(config), Some(config)]);
783 let nodes_1_deserialized;
784 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
786 let (_, _, chan_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 1);
788 // Route a payment so we have an HTLC to claim as well.
789 let _ = route_payment(&nodes[0], &[&nodes[1]], 1_000_000);
790 let error_message = "Channel force-closed";
792 if revoked_counterparty_commitment {
793 // Trigger a fee update such that we advance the state. We will have B broadcast its state
794 // without the fee update.
795 let serialized_node = nodes[1].node.encode();
796 let serialized_monitor = get_monitor!(nodes[1], chan_id).encode();
798 *chanmon_cfgs[0].fee_estimator.sat_per_kw.lock().unwrap() += 1;
799 nodes[0].node.timer_tick_occurred();
800 check_added_monitors!(nodes[0], 1);
802 let fee_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
803 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &fee_update.update_fee.unwrap());
804 commitment_signed_dance!(nodes[1], nodes[0], fee_update.commitment_signed, false);
807 nodes[1], config, &serialized_node, &[&serialized_monitor], persister, new_chain_monitor, nodes_1_deserialized
811 // Connect blocks until the HTLC expiry is met, prompting a commitment broadcast by A.
812 connect_blocks(&nodes[0], TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + 1);
813 check_closed_broadcast(&nodes[0], 1, true);
814 check_added_monitors(&nodes[0], 1);
815 check_closed_event(&nodes[0], 1, ClosureReason::HTLCsTimedOut, false, &[nodes[1].node.get_our_node_id()], 100_000);
818 let mut txn = nodes[0].tx_broadcaster.txn_broadcast();
820 assert_eq!(txn.len(), 1);
821 let commitment_tx_a = txn.pop().unwrap();
822 check_spends!(commitment_tx_a, funding_tx);
824 assert_eq!(txn.len(), 2);
825 let htlc_tx_a = txn.pop().unwrap();
826 let commitment_tx_a = txn.pop().unwrap();
827 check_spends!(commitment_tx_a, funding_tx);
828 check_spends!(htlc_tx_a, commitment_tx_a);
832 // B will also broadcast its own commitment.
833 nodes[1].node.force_close_broadcasting_latest_txn(&chan_id, &nodes[0].node.get_our_node_id(), error_message.to_string()).unwrap();
834 check_closed_broadcast(&nodes[1], 1, true);
835 check_added_monitors(&nodes[1], 1);
836 check_closed_event(&nodes[1], 1, ClosureReason::HolderForceClosed, false, &[nodes[0].node.get_our_node_id()], 100_000);
839 let mut txn = nodes[1].tx_broadcaster.txn_broadcast();
840 assert_eq!(txn.len(), 1);
841 let tx = txn.pop().unwrap();
842 check_spends!(tx, funding_tx);
846 // Confirm B's commitment, A should now broadcast an HTLC timeout for commitment B.
847 mine_transaction(&nodes[0], &commitment_b);
849 let mut txn = nodes[0].tx_broadcaster.txn_broadcast();
850 if nodes[0].connect_style.borrow().updates_best_block_first() {
851 // `commitment_a` and `htlc_timeout_a` are rebroadcast because the best block was
852 // updated prior to seeing `commitment_b`.
853 assert_eq!(txn.len(), if anchors { 2 } else { 3 });
854 check_spends!(txn.last().unwrap(), commitment_b);
856 assert_eq!(txn.len(), 1);
857 check_spends!(txn[0], commitment_b);
861 // Disconnect the block, allowing A to retry its own commitment. Note that we connect two
862 // blocks, one to get us back to the original height, and another to retry our pending claims.
863 disconnect_blocks(&nodes[0], 1);
864 connect_blocks(&nodes[0], 2);
866 let mut txn = nodes[0].tx_broadcaster.unique_txn_broadcast();
868 assert_eq!(txn.len(), 1);
869 check_spends!(txn[0], funding_tx);
871 assert_eq!(txn.len(), 2);
872 check_spends!(txn[0], txn[1]); // HTLC timeout A
873 check_spends!(txn[1], funding_tx); // Commitment A
874 assert_ne!(txn[1].txid(), commitment_b.txid());
880 fn test_retries_own_commitment_broadcast_after_reorg() {
881 do_test_retries_own_commitment_broadcast_after_reorg(false, false);
882 do_test_retries_own_commitment_broadcast_after_reorg(false, true);
883 do_test_retries_own_commitment_broadcast_after_reorg(true, false);
884 do_test_retries_own_commitment_broadcast_after_reorg(true, true);