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 chain::channelmonitor::{ANTI_REORG_DELAY, ChannelMonitor};
13 use chain::transaction::OutPoint;
14 use chain::{Confirm, Watch};
15 use ln::channelmanager::{ChannelManager, ChannelManagerReadArgs};
16 use ln::features::InitFeatures;
17 use ln::msgs::ChannelMessageHandler;
18 use util::enforcing_trait_impls::EnforcingSigner;
19 use util::events::{Event, MessageSendEvent, MessageSendEventsProvider, ClosureReason};
21 use util::ser::{ReadableArgs, Writeable};
23 use bitcoin::blockdata::block::{Block, BlockHeader};
24 use bitcoin::blockdata::script::Builder;
25 use bitcoin::blockdata::opcodes;
26 use bitcoin::hash_types::BlockHash;
27 use bitcoin::secp256k1::Secp256k1;
32 use ln::functional_test_utils::*;
34 fn do_test_onchain_htlc_reorg(local_commitment: bool, claim: bool) {
35 // Our on-chain HTLC-claim learning has a few properties worth testing:
36 // * If an upstream HTLC is claimed with a preimage (both against our own commitment
37 // transaction our counterparty's), we claim it backwards immediately.
38 // * If an upstream HTLC is claimed with a timeout, we delay ANTI_REORG_DELAY before failing
39 // it backwards to ensure our counterparty can't claim with a preimage in a reorg.
41 // Here we test both properties in any combination based on the two bools passed in as
44 // If local_commitment is set, we first broadcast a local commitment containing an offered HTLC
45 // and an HTLC-Timeout tx, otherwise we broadcast a remote commitment containing a received
46 // HTLC and a local HTLC-Timeout tx spending it.
48 // We then either allow these transactions to confirm (if !claim) or we wait until one block
49 // before they otherwise would and reorg them out, confirming an HTLC-Success tx instead.
50 let chanmon_cfgs = create_chanmon_cfgs(3);
51 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
52 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
53 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
55 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
56 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
58 // Make sure all nodes are at the same starting height
59 connect_blocks(&nodes[0], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[0].best_block_info().1);
60 connect_blocks(&nodes[1], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[1].best_block_info().1);
61 connect_blocks(&nodes[2], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[2].best_block_info().1);
63 let (our_payment_preimage, our_payment_hash, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1_000_000);
65 // Provide preimage to node 2 by claiming payment
66 nodes[2].node.claim_funds(our_payment_preimage);
67 expect_payment_claimed!(nodes[2], our_payment_hash, 1_000_000);
68 check_added_monitors!(nodes[2], 1);
69 get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
71 let mut header = BlockHeader { version: 0x2000_0000, prev_blockhash: nodes[2].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
72 let claim_txn = if local_commitment {
73 // Broadcast node 1 commitment txn to broadcast the HTLC-Timeout
74 let node_1_commitment_txn = get_local_commitment_txn!(nodes[1], chan_2.2);
75 assert_eq!(node_1_commitment_txn.len(), 2); // 1 local commitment tx, 1 Outbound HTLC-Timeout
76 assert_eq!(node_1_commitment_txn[0].output.len(), 2); // to-self and Offered HTLC (to-remote/to-node-3 is dust)
77 check_spends!(node_1_commitment_txn[0], chan_2.3);
78 check_spends!(node_1_commitment_txn[1], node_1_commitment_txn[0]);
80 // Give node 2 node 1's transactions and get its response (claiming the HTLC instead).
81 connect_block(&nodes[2], &Block { header, txdata: node_1_commitment_txn.clone() });
82 check_added_monitors!(nodes[2], 1);
83 check_closed_broadcast!(nodes[2], true); // We should get a BroadcastChannelUpdate (and *only* a BroadcstChannelUpdate)
84 check_closed_event!(nodes[2], 1, ClosureReason::CommitmentTxConfirmed);
85 let node_2_commitment_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap();
86 assert_eq!(node_2_commitment_txn.len(), 3); // ChannelMonitor: 1 offered HTLC-Claim, ChannelManger: 1 local commitment tx, 1 Received HTLC-Claim
87 assert_eq!(node_2_commitment_txn[1].output.len(), 2); // to-remote and Received HTLC (to-self is dust)
88 check_spends!(node_2_commitment_txn[1], chan_2.3);
89 check_spends!(node_2_commitment_txn[2], node_2_commitment_txn[1]);
90 check_spends!(node_2_commitment_txn[0], node_1_commitment_txn[0]);
92 // Make sure node 1's height is the same as the !local_commitment case
93 connect_blocks(&nodes[1], 1);
94 // Confirm node 1's commitment txn (and HTLC-Timeout) on node 1
95 header.prev_blockhash = nodes[1].best_block_hash();
96 connect_block(&nodes[1], &Block { header, txdata: node_1_commitment_txn.clone() });
98 // ...but return node 1's commitment tx in case claim is set and we're preparing to reorg
99 vec![node_1_commitment_txn[0].clone(), node_2_commitment_txn[0].clone()]
101 // Broadcast node 2 commitment txn
102 let mut node_2_commitment_txn = get_local_commitment_txn!(nodes[2], chan_2.2);
103 assert_eq!(node_2_commitment_txn.len(), 2); // 1 local commitment tx, 1 Received HTLC-Claim
104 assert_eq!(node_2_commitment_txn[0].output.len(), 2); // to-remote and Received HTLC (to-self is dust)
105 check_spends!(node_2_commitment_txn[0], chan_2.3);
106 check_spends!(node_2_commitment_txn[1], node_2_commitment_txn[0]);
108 // Give node 1 node 2's commitment transaction and get its response (timing the HTLC out)
109 mine_transaction(&nodes[1], &node_2_commitment_txn[0]);
110 connect_blocks(&nodes[1], TEST_FINAL_CLTV - 1); // Confirm blocks until the HTLC expires
111 let node_1_commitment_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
112 assert_eq!(node_1_commitment_txn.len(), 2); // ChannelMonitor: 1 offered HTLC-Timeout, ChannelManger: 1 local commitment tx
113 assert_eq!(node_1_commitment_txn[0].output.len(), 2); // to-local and Offered HTLC (to-remote is dust)
114 check_spends!(node_1_commitment_txn[0], chan_2.3);
115 check_spends!(node_1_commitment_txn[1], node_2_commitment_txn[0]);
117 // Confirm node 1's HTLC-Timeout on node 1
118 mine_transaction(&nodes[1], &node_1_commitment_txn[1]);
119 // ...but return node 2's commitment tx (and claim) in case claim is set and we're preparing to reorg
120 vec![node_2_commitment_txn.pop().unwrap()]
122 check_added_monitors!(nodes[1], 1);
123 check_closed_broadcast!(nodes[1], true); // We should get a BroadcastChannelUpdate (and *only* a BroadcstChannelUpdate)
124 check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed);
125 // Connect ANTI_REORG_DELAY - 2 blocks, giving us a confirmation count of ANTI_REORG_DELAY - 1.
126 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 2);
127 check_added_monitors!(nodes[1], 0);
128 assert_eq!(nodes[1].node.get_and_clear_pending_events().len(), 0);
131 disconnect_blocks(&nodes[1], ANTI_REORG_DELAY - 2);
134 header: BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
137 connect_block(&nodes[1], &block);
139 // ChannelManager only polls chain::Watch::release_pending_monitor_events when we
140 // probe it for events, so we probe non-message events here (which should just be the
141 // PaymentForwarded event).
142 expect_payment_forwarded!(nodes[1], nodes[0], nodes[2], Some(1000), true, true);
144 // Confirm the timeout tx and check that we fail the HTLC backwards
146 header: BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
149 connect_block(&nodes[1], &block);
150 expect_pending_htlcs_forwardable!(nodes[1]);
153 check_added_monitors!(nodes[1], 1);
154 // Which should result in an immediate claim/fail of the HTLC:
155 let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
157 assert_eq!(htlc_updates.update_fulfill_htlcs.len(), 1);
158 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fulfill_htlcs[0]);
160 assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
161 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]);
163 commitment_signed_dance!(nodes[0], nodes[1], htlc_updates.commitment_signed, false, true);
165 expect_payment_sent!(nodes[0], our_payment_preimage);
167 expect_payment_failed_with_update!(nodes[0], our_payment_hash, false, chan_2.0.contents.short_channel_id, true);
172 fn test_onchain_htlc_claim_reorg_local_commitment() {
173 do_test_onchain_htlc_reorg(true, true);
176 fn test_onchain_htlc_timeout_delay_local_commitment() {
177 do_test_onchain_htlc_reorg(true, false);
180 fn test_onchain_htlc_claim_reorg_remote_commitment() {
181 do_test_onchain_htlc_reorg(false, true);
184 fn test_onchain_htlc_timeout_delay_remote_commitment() {
185 do_test_onchain_htlc_reorg(false, false);
188 fn do_test_unconf_chan(reload_node: bool, reorg_after_reload: bool, use_funding_unconfirmed: bool, connect_style: ConnectStyle) {
189 // After creating a chan between nodes, we disconnect all blocks previously seen to force a
190 // channel close on nodes[0] side. We also use this to provide very basic testing of logic
191 // around freeing background events which store monitor updates during block_[dis]connected.
192 let chanmon_cfgs = create_chanmon_cfgs(2);
193 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
194 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
195 let persister: test_utils::TestPersister;
196 let new_chain_monitor: test_utils::TestChainMonitor;
197 let nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
198 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
199 *nodes[0].connect_style.borrow_mut() = connect_style;
201 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
203 let channel_state = nodes[0].node.channel_state.lock().unwrap();
204 assert_eq!(channel_state.by_id.len(), 1);
205 assert_eq!(channel_state.short_to_id.len(), 2);
206 mem::drop(channel_state);
208 if !reorg_after_reload {
209 if use_funding_unconfirmed {
210 let relevant_txids = nodes[0].node.get_relevant_txids();
211 assert_eq!(&relevant_txids[..], &[chan.3.txid()]);
212 nodes[0].node.transaction_unconfirmed(&relevant_txids[0]);
213 } else if connect_style == ConnectStyle::FullBlockViaListen {
214 disconnect_blocks(&nodes[0], CHAN_CONFIRM_DEPTH - 1);
215 assert_eq!(nodes[0].node.list_usable_channels().len(), 1);
216 disconnect_blocks(&nodes[0], 1);
218 disconnect_all_blocks(&nodes[0]);
220 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.");
221 check_added_monitors!(nodes[1], 1);
223 let channel_state = nodes[0].node.channel_state.lock().unwrap();
224 assert_eq!(channel_state.by_id.len(), 0);
225 assert_eq!(channel_state.short_to_id.len(), 0);
230 // Since we currently have a background event pending, it's good to test that we survive a
231 // serialization roundtrip. Further, this tests the somewhat awkward edge-case of dropping
232 // the Channel object from the ChannelManager, but still having a monitor event pending for
233 // it when we go to deserialize, and then use the ChannelManager.
234 let nodes_0_serialized = nodes[0].node.encode();
235 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
236 get_monitor!(nodes[0], chan.2).write(&mut chan_0_monitor_serialized).unwrap();
238 persister = test_utils::TestPersister::new();
239 let keys_manager = &chanmon_cfgs[0].keys_manager;
240 new_chain_monitor = test_utils::TestChainMonitor::new(Some(nodes[0].chain_source), nodes[0].tx_broadcaster.clone(), nodes[0].logger, node_cfgs[0].fee_estimator, &persister, keys_manager);
241 nodes[0].chain_monitor = &new_chain_monitor;
242 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
243 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
244 &mut chan_0_monitor_read, keys_manager).unwrap();
245 assert!(chan_0_monitor_read.is_empty());
247 let mut nodes_0_read = &nodes_0_serialized[..];
248 nodes_0_deserialized = {
249 let mut channel_monitors = HashMap::new();
250 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
251 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster,
252 &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(
253 &mut nodes_0_read, ChannelManagerReadArgs {
254 default_config: *nodes[0].node.get_current_default_configuration(),
256 fee_estimator: node_cfgs[0].fee_estimator,
257 chain_monitor: nodes[0].chain_monitor,
258 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
259 logger: nodes[0].logger,
263 nodes[0].node = &nodes_0_deserialized;
264 assert!(nodes_0_read.is_empty());
265 if !reorg_after_reload {
266 // If the channel is already closed when we reload the node, we'll broadcast a closing
267 // transaction via the ChannelMonitor which is missing a corresponding channel.
268 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
269 nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
272 nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0.clone(), chan_0_monitor).unwrap();
273 check_added_monitors!(nodes[0], 1);
276 if reorg_after_reload {
277 if use_funding_unconfirmed {
278 let relevant_txids = nodes[0].node.get_relevant_txids();
279 assert_eq!(&relevant_txids[..], &[chan.3.txid()]);
280 nodes[0].node.transaction_unconfirmed(&relevant_txids[0]);
281 } else if connect_style == ConnectStyle::FullBlockViaListen {
282 disconnect_blocks(&nodes[0], CHAN_CONFIRM_DEPTH - 1);
283 assert_eq!(nodes[0].node.list_channels().len(), 1);
284 disconnect_blocks(&nodes[0], 1);
286 disconnect_all_blocks(&nodes[0]);
288 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.");
289 check_added_monitors!(nodes[1], 1);
291 let channel_state = nodes[0].node.channel_state.lock().unwrap();
292 assert_eq!(channel_state.by_id.len(), 0);
293 assert_eq!(channel_state.short_to_id.len(), 0);
296 // With expect_channel_force_closed set the TestChainMonitor will enforce that the next update
297 // is a ChannelForcClosed on the right channel with should_broadcast set.
298 *nodes[0].chain_monitor.expect_channel_force_closed.lock().unwrap() = Some((chan.2, true));
299 nodes[0].node.test_process_background_events(); // Required to free the pending background monitor update
300 check_added_monitors!(nodes[0], 1);
301 let expected_err = "Funding transaction was un-confirmed. Locked at 6 confs, now have 0 confs.";
302 check_closed_event!(nodes[1], 1, ClosureReason::CounterpartyForceClosed { peer_msg: "Channel closed because of an exception: ".to_owned() + expected_err });
303 check_closed_event!(nodes[0], 1, ClosureReason::ProcessingError { err: expected_err.to_owned() });
304 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
305 nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
307 // Now check that we can create a new channel
308 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
309 send_payment(&nodes[0], &[&nodes[1]], 8000000);
313 fn test_unconf_chan() {
314 do_test_unconf_chan(true, true, false, ConnectStyle::BestBlockFirstSkippingBlocks);
315 do_test_unconf_chan(false, true, false, ConnectStyle::BestBlockFirstSkippingBlocks);
316 do_test_unconf_chan(true, false, false, ConnectStyle::BestBlockFirstSkippingBlocks);
317 do_test_unconf_chan(false, false, false, ConnectStyle::BestBlockFirstSkippingBlocks);
319 do_test_unconf_chan(true, true, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
320 do_test_unconf_chan(false, true, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
321 do_test_unconf_chan(true, false, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
322 do_test_unconf_chan(false, false, false, ConnectStyle::BestBlockFirstReorgsOnlyTip);
326 fn test_unconf_chan_via_listen() {
327 do_test_unconf_chan(true, true, false, ConnectStyle::FullBlockViaListen);
328 do_test_unconf_chan(false, true, false, ConnectStyle::FullBlockViaListen);
329 do_test_unconf_chan(true, false, false, ConnectStyle::FullBlockViaListen);
330 do_test_unconf_chan(false, false, false, ConnectStyle::FullBlockViaListen);
334 fn test_unconf_chan_via_funding_unconfirmed() {
335 do_test_unconf_chan(true, true, true, ConnectStyle::BestBlockFirstSkippingBlocks);
336 do_test_unconf_chan(false, true, true, ConnectStyle::BestBlockFirstSkippingBlocks);
337 do_test_unconf_chan(true, false, true, ConnectStyle::BestBlockFirstSkippingBlocks);
338 do_test_unconf_chan(false, false, true, ConnectStyle::BestBlockFirstSkippingBlocks);
340 do_test_unconf_chan(true, true, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
341 do_test_unconf_chan(false, true, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
342 do_test_unconf_chan(true, false, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
343 do_test_unconf_chan(false, false, true, ConnectStyle::BestBlockFirstReorgsOnlyTip);
345 do_test_unconf_chan(true, true, true, ConnectStyle::FullBlockViaListen);
346 do_test_unconf_chan(false, true, true, ConnectStyle::FullBlockViaListen);
347 do_test_unconf_chan(true, false, true, ConnectStyle::FullBlockViaListen);
348 do_test_unconf_chan(false, false, true, ConnectStyle::FullBlockViaListen);
352 fn test_set_outpoints_partial_claiming() {
353 // - remote party claim tx, new bump tx
354 // - disconnect remote claiming tx, new bump
355 // - disconnect tx, see no tx anymore
356 let chanmon_cfgs = create_chanmon_cfgs(2);
357 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
358 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
359 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
361 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
362 let (payment_preimage_1, payment_hash_1, _) = route_payment(&nodes[1], &[&nodes[0]], 3_000_000);
363 let (payment_preimage_2, payment_hash_2, _) = route_payment(&nodes[1], &[&nodes[0]], 3_000_000);
365 // Remote commitment txn with 4 outputs: to_local, to_remote, 2 outgoing HTLC
366 let remote_txn = get_local_commitment_txn!(nodes[1], chan.2);
367 assert_eq!(remote_txn.len(), 3);
368 assert_eq!(remote_txn[0].output.len(), 4);
369 assert_eq!(remote_txn[0].input.len(), 1);
370 assert_eq!(remote_txn[0].input[0].previous_output.txid, chan.3.txid());
371 check_spends!(remote_txn[1], remote_txn[0]);
372 check_spends!(remote_txn[2], remote_txn[0]);
374 // Connect blocks on node A to advance height towards TEST_FINAL_CLTV
375 // Provide node A with both preimage
376 nodes[0].node.claim_funds(payment_preimage_1);
377 expect_payment_claimed!(nodes[0], payment_hash_1, 3_000_000);
378 nodes[0].node.claim_funds(payment_preimage_2);
379 expect_payment_claimed!(nodes[0], payment_hash_2, 3_000_000);
380 check_added_monitors!(nodes[0], 2);
381 nodes[0].node.get_and_clear_pending_msg_events();
383 // Connect blocks on node A commitment transaction
384 mine_transaction(&nodes[0], &remote_txn[0]);
385 check_closed_broadcast!(nodes[0], true);
386 check_closed_event!(nodes[0], 1, ClosureReason::CommitmentTxConfirmed);
387 check_added_monitors!(nodes[0], 1);
388 // Verify node A broadcast tx claiming both HTLCs
390 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
391 // ChannelMonitor: claim tx, ChannelManager: local commitment tx + HTLC-Success*2
392 assert_eq!(node_txn.len(), 4);
393 check_spends!(node_txn[0], remote_txn[0]);
394 check_spends!(node_txn[1], chan.3);
395 check_spends!(node_txn[2], node_txn[1]);
396 check_spends!(node_txn[3], node_txn[1]);
397 assert_eq!(node_txn[0].input.len(), 2);
401 // Connect blocks on node B
402 connect_blocks(&nodes[1], 135);
403 check_closed_broadcast!(nodes[1], true);
404 check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed);
405 check_added_monitors!(nodes[1], 1);
406 // Verify node B broadcast 2 HTLC-timeout txn
407 let partial_claim_tx = {
408 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
409 assert_eq!(node_txn.len(), 3);
410 check_spends!(node_txn[1], node_txn[0]);
411 check_spends!(node_txn[2], node_txn[0]);
412 assert_eq!(node_txn[1].input.len(), 1);
413 assert_eq!(node_txn[2].input.len(), 1);
417 // Broadcast partial claim on node A, should regenerate a claiming tx with HTLC dropped
418 mine_transaction(&nodes[0], &partial_claim_tx);
420 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
421 assert_eq!(node_txn.len(), 1);
422 check_spends!(node_txn[0], remote_txn[0]);
423 assert_eq!(node_txn[0].input.len(), 1); //dropped HTLC
426 nodes[0].node.get_and_clear_pending_msg_events();
428 // Disconnect last block on node A, should regenerate a claiming tx with HTLC dropped
429 disconnect_blocks(&nodes[0], 1);
431 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
432 assert_eq!(node_txn.len(), 1);
433 check_spends!(node_txn[0], remote_txn[0]);
434 assert_eq!(node_txn[0].input.len(), 2); //resurrected HTLC
438 //// Disconnect one more block and then reconnect multiple no transaction should be generated
439 disconnect_blocks(&nodes[0], 1);
440 connect_blocks(&nodes[0], 15);
442 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
443 assert_eq!(node_txn.len(), 0);
448 fn do_test_to_remote_after_local_detection(style: ConnectStyle) {
449 // In previous code, detection of to_remote outputs in a counterparty commitment transaction
450 // was dependent on whether a local commitment transaction had been seen on-chain previously.
451 // This resulted in some edge cases around not being able to generate a SpendableOutput event
454 // Here, we test this by first confirming one set of commitment transactions, then
455 // disconnecting them and reconnecting another. We then confirm them and check that the correct
456 // SpendableOutput event is generated.
457 let chanmon_cfgs = create_chanmon_cfgs(2);
458 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
459 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
460 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
462 *nodes[0].connect_style.borrow_mut() = style;
463 *nodes[1].connect_style.borrow_mut() = style;
465 let (_, _, chan_id, funding_tx) =
466 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 100_000_000, InitFeatures::known(), InitFeatures::known());
467 let funding_outpoint = OutPoint { txid: funding_tx.txid(), index: 0 };
468 assert_eq!(funding_outpoint.to_channel_id(), chan_id);
470 let remote_txn_a = get_local_commitment_txn!(nodes[0], chan_id);
471 let remote_txn_b = get_local_commitment_txn!(nodes[1], chan_id);
473 mine_transaction(&nodes[0], &remote_txn_a[0]);
474 mine_transaction(&nodes[1], &remote_txn_a[0]);
476 assert!(nodes[0].node.list_channels().is_empty());
477 check_closed_broadcast!(nodes[0], true);
478 check_added_monitors!(nodes[0], 1);
479 check_closed_event!(nodes[0], 1, ClosureReason::CommitmentTxConfirmed);
480 assert!(nodes[1].node.list_channels().is_empty());
481 check_closed_broadcast!(nodes[1], true);
482 check_added_monitors!(nodes[1], 1);
483 check_closed_event!(nodes[1], 1, ClosureReason::CommitmentTxConfirmed);
485 // Drop transactions broadcasted in response to the first commitment transaction (we have good
486 // test coverage of these things already elsewhere).
487 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0).len(), 1);
488 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0).len(), 1);
490 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
491 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
493 disconnect_blocks(&nodes[0], 1);
494 disconnect_blocks(&nodes[1], 1);
496 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
497 assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
498 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
499 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
501 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
502 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
504 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
505 assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
506 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
507 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
509 mine_transaction(&nodes[0], &remote_txn_b[0]);
510 mine_transaction(&nodes[1], &remote_txn_b[0]);
512 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
513 assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
514 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
515 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
517 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
518 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
520 let mut node_a_spendable = nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events();
521 assert_eq!(node_a_spendable.len(), 1);
522 if let Event::SpendableOutputs { outputs } = node_a_spendable.pop().unwrap() {
523 assert_eq!(outputs.len(), 1);
524 let spend_tx = nodes[0].keys_manager.backing.spend_spendable_outputs(&[&outputs[0]], Vec::new(),
525 Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(), 253, &Secp256k1::new()).unwrap();
526 check_spends!(spend_tx, remote_txn_b[0]);
529 // nodes[1] is waiting for the to_self_delay to expire, which is many more than
530 // ANTI_REORG_DELAY. Instead, walk it back and confirm the original remote_txn_a commitment
531 // again and check that nodes[1] generates a similar spendable output.
532 // Technically a reorg of ANTI_REORG_DELAY violates our assumptions, so this is undefined by
533 // our API spec, but we currently handle this correctly and there's little reason we shouldn't
535 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
536 disconnect_blocks(&nodes[1], ANTI_REORG_DELAY);
537 mine_transaction(&nodes[1], &remote_txn_a[0]);
538 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
540 let mut node_b_spendable = nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events();
541 assert_eq!(node_b_spendable.len(), 1);
542 if let Event::SpendableOutputs { outputs } = node_b_spendable.pop().unwrap() {
543 assert_eq!(outputs.len(), 1);
544 let spend_tx = nodes[1].keys_manager.backing.spend_spendable_outputs(&[&outputs[0]], Vec::new(),
545 Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(), 253, &Secp256k1::new()).unwrap();
546 check_spends!(spend_tx, remote_txn_a[0]);
551 fn test_to_remote_after_local_detection() {
552 do_test_to_remote_after_local_detection(ConnectStyle::BestBlockFirst);
553 do_test_to_remote_after_local_detection(ConnectStyle::BestBlockFirstSkippingBlocks);
554 do_test_to_remote_after_local_detection(ConnectStyle::BestBlockFirstReorgsOnlyTip);
555 do_test_to_remote_after_local_detection(ConnectStyle::TransactionsFirst);
556 do_test_to_remote_after_local_detection(ConnectStyle::TransactionsFirstSkippingBlocks);
557 do_test_to_remote_after_local_detection(ConnectStyle::TransactionsFirstReorgsOnlyTip);
558 do_test_to_remote_after_local_detection(ConnectStyle::FullBlockViaListen);