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};
16 use ln::channelmanager::{ChannelManager, ChannelManagerReadArgs};
17 use ln::features::InitFeatures;
18 use ln::msgs::{ChannelMessageHandler, ErrorAction};
19 use routing::network_graph::NetworkUpdate;
20 use util::enforcing_trait_impls::EnforcingSigner;
21 use util::events::{Event, MessageSendEvent, MessageSendEventsProvider};
23 use util::ser::{ReadableArgs, Writeable};
25 use bitcoin::blockdata::block::{Block, BlockHeader};
26 use bitcoin::blockdata::script::Builder;
27 use bitcoin::blockdata::opcodes;
28 use bitcoin::hashes::sha256::Hash as Sha256;
29 use bitcoin::hashes::Hash;
30 use bitcoin::hash_types::BlockHash;
31 use bitcoin::secp256k1::Secp256k1;
36 use ln::functional_test_utils::*;
38 fn do_test_onchain_htlc_reorg(local_commitment: bool, claim: bool) {
39 // Our on-chain HTLC-claim learning has a few properties worth testing:
40 // * If an upstream HTLC is claimed with a preimage (both against our own commitment
41 // transaction our counterparty's), we claim it backwards immediately.
42 // * If an upstream HTLC is claimed with a timeout, we delay ANTI_REORG_DELAY before failing
43 // it backwards to ensure our counterparty can't claim with a preimage in a reorg.
45 // Here we test both properties in any combination based on the two bools passed in as
48 // If local_commitment is set, we first broadcast a local commitment containing an offered HTLC
49 // and an HTLC-Timeout tx, otherwise we broadcast a remote commitment containing a received
50 // HTLC and a local HTLC-Timeout tx spending it.
52 // We then either allow these transactions to confirm (if !claim) or we wait until one block
53 // before they otherwise would and reorg them out, confirming an HTLC-Success tx instead.
54 let chanmon_cfgs = create_chanmon_cfgs(3);
55 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
56 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
57 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
59 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
60 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
62 // Make sure all nodes are at the same starting height
63 connect_blocks(&nodes[0], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[0].best_block_info().1);
64 connect_blocks(&nodes[1], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[1].best_block_info().1);
65 connect_blocks(&nodes[2], 2*CHAN_CONFIRM_DEPTH + 1 - nodes[2].best_block_info().1);
67 let (our_payment_preimage, our_payment_hash, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1000000);
69 // Provide preimage to node 2 by claiming payment
70 nodes[2].node.claim_funds(our_payment_preimage);
71 check_added_monitors!(nodes[2], 1);
72 get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
74 let mut header = BlockHeader { version: 0x2000_0000, prev_blockhash: nodes[2].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
75 let claim_txn = if local_commitment {
76 // Broadcast node 1 commitment txn to broadcast the HTLC-Timeout
77 let node_1_commitment_txn = get_local_commitment_txn!(nodes[1], chan_2.2);
78 assert_eq!(node_1_commitment_txn.len(), 2); // 1 local commitment tx, 1 Outbound HTLC-Timeout
79 assert_eq!(node_1_commitment_txn[0].output.len(), 2); // to-self and Offered HTLC (to-remote/to-node-3 is dust)
80 check_spends!(node_1_commitment_txn[0], chan_2.3);
81 check_spends!(node_1_commitment_txn[1], node_1_commitment_txn[0]);
83 // Give node 2 node 1's transactions and get its response (claiming the HTLC instead).
84 connect_block(&nodes[2], &Block { header, txdata: node_1_commitment_txn.clone() });
85 check_added_monitors!(nodes[2], 1);
86 check_closed_broadcast!(nodes[2], true); // We should get a BroadcastChannelUpdate (and *only* a BroadcstChannelUpdate)
87 let node_2_commitment_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap();
88 assert_eq!(node_2_commitment_txn.len(), 3); // ChannelMonitor: 1 offered HTLC-Claim, ChannelManger: 1 local commitment tx, 1 Received HTLC-Claim
89 assert_eq!(node_2_commitment_txn[1].output.len(), 2); // to-remote and Received HTLC (to-self is dust)
90 check_spends!(node_2_commitment_txn[1], chan_2.3);
91 check_spends!(node_2_commitment_txn[2], node_2_commitment_txn[1]);
92 check_spends!(node_2_commitment_txn[0], node_1_commitment_txn[0]);
94 // Make sure node 1's height is the same as the !local_commitment case
95 connect_blocks(&nodes[1], 1);
96 // Confirm node 1's commitment txn (and HTLC-Timeout) on node 1
97 header.prev_blockhash = nodes[1].best_block_hash();
98 connect_block(&nodes[1], &Block { header, txdata: node_1_commitment_txn.clone() });
100 // ...but return node 1's commitment tx in case claim is set and we're preparing to reorg
101 vec![node_1_commitment_txn[0].clone(), node_2_commitment_txn[0].clone()]
103 // Broadcast node 2 commitment txn
104 let node_2_commitment_txn = get_local_commitment_txn!(nodes[2], chan_2.2);
105 assert_eq!(node_2_commitment_txn.len(), 2); // 1 local commitment tx, 1 Received HTLC-Claim
106 assert_eq!(node_2_commitment_txn[0].output.len(), 2); // to-remote and Received HTLC (to-self is dust)
107 check_spends!(node_2_commitment_txn[0], chan_2.3);
108 check_spends!(node_2_commitment_txn[1], node_2_commitment_txn[0]);
110 // Give node 1 node 2's commitment transaction and get its response (timing the HTLC out)
111 mine_transaction(&nodes[1], &node_2_commitment_txn[0]);
112 connect_blocks(&nodes[1], TEST_FINAL_CLTV - 1); // Confirm blocks until the HTLC expires
113 let node_1_commitment_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
114 assert_eq!(node_1_commitment_txn.len(), 2); // ChannelMonitor: 1 offered HTLC-Timeout, ChannelManger: 1 local commitment tx
115 assert_eq!(node_1_commitment_txn[0].output.len(), 2); // to-local and Offered HTLC (to-remote is dust)
116 check_spends!(node_1_commitment_txn[0], chan_2.3);
117 check_spends!(node_1_commitment_txn[1], node_2_commitment_txn[0]);
119 // Confirm node 2's commitment txn (and node 1's HTLC-Timeout) on node 1
120 header.prev_blockhash = nodes[1].best_block_hash();
121 let block = Block { header, txdata: vec![node_2_commitment_txn[0].clone(), node_1_commitment_txn[1].clone()] };
122 connect_block(&nodes[1], &block);
123 // ...but return node 2's commitment tx (and claim) in case claim is set and we're preparing to reorg
124 node_2_commitment_txn
126 check_added_monitors!(nodes[1], 1);
127 check_closed_broadcast!(nodes[1], true); // We should get a BroadcastChannelUpdate (and *only* a BroadcstChannelUpdate)
128 // Connect ANTI_REORG_DELAY - 2 blocks, giving us a confirmation count of ANTI_REORG_DELAY - 1.
129 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 2);
130 check_added_monitors!(nodes[1], 0);
131 assert_eq!(nodes[1].node.get_and_clear_pending_events().len(), 0);
134 disconnect_blocks(&nodes[1], ANTI_REORG_DELAY - 2);
137 header: BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
140 connect_block(&nodes[1], &block);
142 // ChannelManager only polls chain::Watch::release_pending_monitor_events when we
143 // probe it for events, so we probe non-message events here (which should just be the
144 // PaymentForwarded event).
145 expect_payment_forwarded!(nodes[1], Some(1000), true);
147 // Confirm the timeout tx and check that we fail the HTLC backwards
149 header: BlockHeader { version: 0x20000000, prev_blockhash: nodes[1].best_block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
152 connect_block(&nodes[1], &block);
153 expect_pending_htlcs_forwardable!(nodes[1]);
156 check_added_monitors!(nodes[1], 1);
157 // Which should result in an immediate claim/fail of the HTLC:
158 let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
160 assert_eq!(htlc_updates.update_fulfill_htlcs.len(), 1);
161 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fulfill_htlcs[0]);
163 assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
164 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]);
166 commitment_signed_dance!(nodes[0], nodes[1], htlc_updates.commitment_signed, false, true);
168 expect_payment_sent!(nodes[0], our_payment_preimage);
170 expect_payment_failed_with_update!(nodes[0], our_payment_hash, false, chan_2.0.contents.short_channel_id, true);
175 fn test_onchain_htlc_claim_reorg_local_commitment() {
176 do_test_onchain_htlc_reorg(true, true);
179 fn test_onchain_htlc_timeout_delay_local_commitment() {
180 do_test_onchain_htlc_reorg(true, false);
183 fn test_onchain_htlc_claim_reorg_remote_commitment() {
184 do_test_onchain_htlc_reorg(false, true);
187 fn test_onchain_htlc_timeout_delay_remote_commitment() {
188 do_test_onchain_htlc_reorg(false, false);
191 fn do_test_unconf_chan(reload_node: bool, reorg_after_reload: bool, use_funding_unconfirmed: bool, connect_style: ConnectStyle) {
192 // After creating a chan between nodes, we disconnect all blocks previously seen to force a
193 // channel close on nodes[0] side. We also use this to provide very basic testing of logic
194 // around freeing background events which store monitor updates during block_[dis]connected.
195 let chanmon_cfgs = create_chanmon_cfgs(2);
196 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
197 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
198 let persister: test_utils::TestPersister;
199 let new_chain_monitor: test_utils::TestChainMonitor;
200 let nodes_0_deserialized: ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
201 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
202 *nodes[0].connect_style.borrow_mut() = connect_style;
204 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
206 let channel_state = nodes[0].node.channel_state.lock().unwrap();
207 assert_eq!(channel_state.by_id.len(), 1);
208 assert_eq!(channel_state.short_to_id.len(), 1);
209 mem::drop(channel_state);
211 if !reorg_after_reload {
212 if use_funding_unconfirmed {
213 let relevant_txids = nodes[0].node.get_relevant_txids();
214 assert_eq!(&relevant_txids[..], &[chan.3.txid()]);
215 nodes[0].node.transaction_unconfirmed(&relevant_txids[0]);
217 disconnect_all_blocks(&nodes[0]);
219 if connect_style == ConnectStyle::FullBlockViaListen && !use_funding_unconfirmed {
220 handle_announce_close_broadcast_events(&nodes, 0, 1, true, "Funding transaction was un-confirmed. Locked at 6 confs, now have 2 confs.");
222 handle_announce_close_broadcast_events(&nodes, 0, 1, true, "Funding transaction was un-confirmed. Locked at 6 confs, now have 0 confs.");
224 check_added_monitors!(nodes[1], 1);
226 let channel_state = nodes[0].node.channel_state.lock().unwrap();
227 assert_eq!(channel_state.by_id.len(), 0);
228 assert_eq!(channel_state.short_to_id.len(), 0);
233 // Since we currently have a background event pending, it's good to test that we survive a
234 // serialization roundtrip. Further, this tests the somewhat awkward edge-case of dropping
235 // the Channel object from the ChannelManager, but still having a monitor event pending for
236 // it when we go to deserialize, and then use the ChannelManager.
237 let nodes_0_serialized = nodes[0].node.encode();
238 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
239 nodes[0].chain_monitor.chain_monitor.monitors.read().unwrap().iter().next().unwrap().1.write(&mut chan_0_monitor_serialized).unwrap();
241 persister = test_utils::TestPersister::new();
242 let keys_manager = &chanmon_cfgs[0].keys_manager;
243 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);
244 nodes[0].chain_monitor = &new_chain_monitor;
245 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
246 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(
247 &mut chan_0_monitor_read, keys_manager).unwrap();
248 assert!(chan_0_monitor_read.is_empty());
250 let mut nodes_0_read = &nodes_0_serialized[..];
251 nodes_0_deserialized = {
252 let mut channel_monitors = HashMap::new();
253 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
254 <(BlockHash, ChannelManager<EnforcingSigner, &test_utils::TestChainMonitor, &test_utils::TestBroadcaster,
255 &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(
256 &mut nodes_0_read, ChannelManagerReadArgs {
257 default_config: *nodes[0].node.get_current_default_configuration(),
259 fee_estimator: node_cfgs[0].fee_estimator,
260 chain_monitor: nodes[0].chain_monitor,
261 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
262 logger: nodes[0].logger,
266 nodes[0].node = &nodes_0_deserialized;
267 assert!(nodes_0_read.is_empty());
268 if !reorg_after_reload {
269 // If the channel is already closed when we reload the node, we'll broadcast a closing
270 // transaction via the ChannelMonitor which is missing a corresponding channel.
271 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
272 nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
275 nodes[0].chain_monitor.watch_channel(chan_0_monitor.get_funding_txo().0.clone(), chan_0_monitor).unwrap();
276 check_added_monitors!(nodes[0], 1);
279 if reorg_after_reload {
280 if use_funding_unconfirmed {
281 let relevant_txids = nodes[0].node.get_relevant_txids();
282 assert_eq!(&relevant_txids[..], &[chan.3.txid()]);
283 nodes[0].node.transaction_unconfirmed(&relevant_txids[0]);
285 disconnect_all_blocks(&nodes[0]);
287 if connect_style == ConnectStyle::FullBlockViaListen && !use_funding_unconfirmed {
288 handle_announce_close_broadcast_events(&nodes, 0, 1, true, "Funding transaction was un-confirmed. Locked at 6 confs, now have 2 confs.");
290 handle_announce_close_broadcast_events(&nodes, 0, 1, true, "Funding transaction was un-confirmed. Locked at 6 confs, now have 0 confs.");
292 check_added_monitors!(nodes[1], 1);
294 let channel_state = nodes[0].node.channel_state.lock().unwrap();
295 assert_eq!(channel_state.by_id.len(), 0);
296 assert_eq!(channel_state.short_to_id.len(), 0);
299 // With expect_channel_force_closed set the TestChainMonitor will enforce that the next update
300 // is a ChannelForcClosed on the right channel with should_broadcast set.
301 *nodes[0].chain_monitor.expect_channel_force_closed.lock().unwrap() = Some((chan.2, true));
302 nodes[0].node.test_process_background_events(); // Required to free the pending background monitor update
303 check_added_monitors!(nodes[0], 1);
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);
321 fn test_unconf_chan_via_listen() {
322 do_test_unconf_chan(true, true, false, ConnectStyle::FullBlockViaListen);
323 do_test_unconf_chan(false, true, false, ConnectStyle::FullBlockViaListen);
324 do_test_unconf_chan(true, false, false, ConnectStyle::FullBlockViaListen);
325 do_test_unconf_chan(false, false, false, ConnectStyle::FullBlockViaListen);
329 fn test_unconf_chan_via_funding_unconfirmed() {
330 do_test_unconf_chan(true, true, true, ConnectStyle::BestBlockFirstSkippingBlocks);
331 do_test_unconf_chan(false, true, true, ConnectStyle::BestBlockFirstSkippingBlocks);
332 do_test_unconf_chan(true, false, true, ConnectStyle::BestBlockFirstSkippingBlocks);
333 do_test_unconf_chan(false, false, true, ConnectStyle::BestBlockFirstSkippingBlocks);
335 do_test_unconf_chan(true, true, true, ConnectStyle::FullBlockViaListen);
336 do_test_unconf_chan(false, true, true, ConnectStyle::FullBlockViaListen);
337 do_test_unconf_chan(true, false, true, ConnectStyle::FullBlockViaListen);
338 do_test_unconf_chan(false, false, true, ConnectStyle::FullBlockViaListen);
342 fn test_set_outpoints_partial_claiming() {
343 // - remote party claim tx, new bump tx
344 // - disconnect remote claiming tx, new bump
345 // - disconnect tx, see no tx anymore
346 let chanmon_cfgs = create_chanmon_cfgs(2);
347 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
348 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
349 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
351 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
352 let payment_preimage_1 = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3_000_000).0;
353 let payment_preimage_2 = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3_000_000).0;
355 // Remote commitment txn with 4 outputs: to_local, to_remote, 2 outgoing HTLC
356 let remote_txn = get_local_commitment_txn!(nodes[1], chan.2);
357 assert_eq!(remote_txn.len(), 3);
358 assert_eq!(remote_txn[0].output.len(), 4);
359 assert_eq!(remote_txn[0].input.len(), 1);
360 assert_eq!(remote_txn[0].input[0].previous_output.txid, chan.3.txid());
361 check_spends!(remote_txn[1], remote_txn[0]);
362 check_spends!(remote_txn[2], remote_txn[0]);
364 // Connect blocks on node A to advance height towards TEST_FINAL_CLTV
365 // Provide node A with both preimage
366 nodes[0].node.claim_funds(payment_preimage_1);
367 nodes[0].node.claim_funds(payment_preimage_2);
368 check_added_monitors!(nodes[0], 2);
369 nodes[0].node.get_and_clear_pending_events();
370 nodes[0].node.get_and_clear_pending_msg_events();
372 // Connect blocks on node A commitment transaction
373 mine_transaction(&nodes[0], &remote_txn[0]);
374 check_closed_broadcast!(nodes[0], true);
375 check_added_monitors!(nodes[0], 1);
376 // Verify node A broadcast tx claiming both HTLCs
378 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
379 // ChannelMonitor: claim tx, ChannelManager: local commitment tx + HTLC-Success*2
380 assert_eq!(node_txn.len(), 4);
381 check_spends!(node_txn[0], remote_txn[0]);
382 check_spends!(node_txn[1], chan.3);
383 check_spends!(node_txn[2], node_txn[1]);
384 check_spends!(node_txn[3], node_txn[1]);
385 assert_eq!(node_txn[0].input.len(), 2);
389 // Connect blocks on node B
390 connect_blocks(&nodes[1], 135);
391 check_closed_broadcast!(nodes[1], true);
392 check_added_monitors!(nodes[1], 1);
393 // Verify node B broadcast 2 HTLC-timeout txn
394 let partial_claim_tx = {
395 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
396 assert_eq!(node_txn.len(), 3);
397 check_spends!(node_txn[1], node_txn[0]);
398 check_spends!(node_txn[2], node_txn[0]);
399 assert_eq!(node_txn[1].input.len(), 1);
400 assert_eq!(node_txn[2].input.len(), 1);
404 // Broadcast partial claim on node A, should regenerate a claiming tx with HTLC dropped
405 mine_transaction(&nodes[0], &partial_claim_tx);
407 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
408 assert_eq!(node_txn.len(), 1);
409 check_spends!(node_txn[0], remote_txn[0]);
410 assert_eq!(node_txn[0].input.len(), 1); //dropped HTLC
413 nodes[0].node.get_and_clear_pending_msg_events();
415 // Disconnect last block on node A, should regenerate a claiming tx with HTLC dropped
416 disconnect_blocks(&nodes[0], 1);
418 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
419 assert_eq!(node_txn.len(), 1);
420 check_spends!(node_txn[0], remote_txn[0]);
421 assert_eq!(node_txn[0].input.len(), 2); //resurrected HTLC
425 //// Disconnect one more block and then reconnect multiple no transaction should be generated
426 disconnect_blocks(&nodes[0], 1);
427 connect_blocks(&nodes[0], 15);
429 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
430 assert_eq!(node_txn.len(), 0);
435 fn do_test_to_remote_after_local_detection(style: ConnectStyle) {
436 // In previous code, detection of to_remote outputs in a counterparty commitment transaction
437 // was dependent on whether a local commitment transaction had been seen on-chain previously.
438 // This resulted in some edge cases around not being able to generate a SpendableOutput event
441 // Here, we test this by first confirming one set of commitment transactions, then
442 // disconnecting them and reconnecting another. We then confirm them and check that the correct
443 // SpendableOutput event is generated.
444 let chanmon_cfgs = create_chanmon_cfgs(2);
445 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
446 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
447 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
449 *nodes[0].connect_style.borrow_mut() = style;
450 *nodes[1].connect_style.borrow_mut() = style;
452 let (_, _, chan_id, funding_tx) =
453 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 100_000_000, InitFeatures::known(), InitFeatures::known());
454 let funding_outpoint = OutPoint { txid: funding_tx.txid(), index: 0 };
455 assert_eq!(funding_outpoint.to_channel_id(), chan_id);
457 let remote_txn_a = get_local_commitment_txn!(nodes[0], chan_id);
458 let remote_txn_b = get_local_commitment_txn!(nodes[1], chan_id);
460 mine_transaction(&nodes[0], &remote_txn_a[0]);
461 mine_transaction(&nodes[1], &remote_txn_a[0]);
463 assert!(nodes[0].node.list_channels().is_empty());
464 check_closed_broadcast!(nodes[0], true);
465 check_added_monitors!(nodes[0], 1);
466 assert!(nodes[1].node.list_channels().is_empty());
467 check_closed_broadcast!(nodes[1], true);
468 check_added_monitors!(nodes[1], 1);
470 // Drop transactions broadcasted in response to the first commitment transaction (we have good
471 // test coverage of these things already elsewhere).
472 assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0).len(), 1);
473 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0).len(), 1);
475 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
476 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
478 disconnect_blocks(&nodes[0], 1);
479 disconnect_blocks(&nodes[1], 1);
481 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
482 assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
483 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
484 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
486 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
487 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
489 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
490 assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
491 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
492 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
494 mine_transaction(&nodes[0], &remote_txn_b[0]);
495 mine_transaction(&nodes[1], &remote_txn_b[0]);
497 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
498 assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
499 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
500 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
502 connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
503 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
505 let mut node_a_spendable = nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events();
506 assert_eq!(node_a_spendable.len(), 1);
507 if let Event::SpendableOutputs { outputs } = node_a_spendable.pop().unwrap() {
508 assert_eq!(outputs.len(), 1);
509 let spend_tx = nodes[0].keys_manager.backing.spend_spendable_outputs(&[&outputs[0]], Vec::new(),
510 Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(), 253, &Secp256k1::new()).unwrap();
511 check_spends!(spend_tx, remote_txn_b[0]);
514 // nodes[1] is waiting for the to_self_delay to expire, which is many more than
515 // ANTI_REORG_DELAY. Instead, walk it back and confirm the original remote_txn_a commitment
516 // again and check that nodes[1] generates a similar spendable output.
517 // Technically a reorg of ANTI_REORG_DELAY violates our assumptions, so this is undefined by
518 // our API spec, but we currently handle this correctly and there's little reason we shouldn't
520 assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
521 disconnect_blocks(&nodes[1], ANTI_REORG_DELAY);
522 mine_transaction(&nodes[1], &remote_txn_a[0]);
523 connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
525 let mut node_b_spendable = nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events();
526 assert_eq!(node_b_spendable.len(), 1);
527 if let Event::SpendableOutputs { outputs } = node_b_spendable.pop().unwrap() {
528 assert_eq!(outputs.len(), 1);
529 let spend_tx = nodes[1].keys_manager.backing.spend_spendable_outputs(&[&outputs[0]], Vec::new(),
530 Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(), 253, &Secp256k1::new()).unwrap();
531 check_spends!(spend_tx, remote_txn_a[0]);
536 fn test_to_remote_after_local_detection() {
537 do_test_to_remote_after_local_detection(ConnectStyle::BestBlockFirst);
538 do_test_to_remote_after_local_detection(ConnectStyle::BestBlockFirstSkippingBlocks);
539 do_test_to_remote_after_local_detection(ConnectStyle::TransactionsFirst);
540 do_test_to_remote_after_local_detection(ConnectStyle::TransactionsFirstSkippingBlocks);
541 do_test_to_remote_after_local_detection(ConnectStyle::FullBlockViaListen);