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 //! Tests for asynchronous signing. These tests verify that the channel state machine behaves
11 //! properly with a signer implementation that asynchronously derives signatures.
13 use bitcoin::{Transaction, TxOut, TxIn, Amount};
14 use bitcoin::blockdata::locktime::absolute::LockTime;
15 use bitcoin::transaction::Version;
17 use crate::chain::channelmonitor::LATENCY_GRACE_PERIOD_BLOCKS;
18 use crate::events::bump_transaction::WalletSource;
19 use crate::events::{Event, MessageSendEvent, MessageSendEventsProvider, ClosureReason};
20 use crate::ln::functional_test_utils::*;
21 use crate::ln::msgs::ChannelMessageHandler;
22 use crate::ln::channelmanager::{PaymentId, RecipientOnionFields};
23 use crate::util::test_channel_signer::SignerOp;
26 fn test_async_commitment_signature_for_funding_created() {
27 // Simulate acquiring the signature for `funding_created` asynchronously.
28 let chanmon_cfgs = create_chanmon_cfgs(2);
29 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
30 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
31 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
33 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None, None).unwrap();
35 // nodes[0] --- open_channel --> nodes[1]
36 let mut open_chan_msg = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
37 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &open_chan_msg);
39 // nodes[0] <-- accept_channel --- nodes[1]
40 nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), &get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id()));
42 // nodes[0] --- funding_created --> nodes[1]
44 // But! Let's make node[0]'s signer be unavailable: we should *not* broadcast a funding_created
46 let (temporary_channel_id, tx, _) = create_funding_transaction(&nodes[0], &nodes[1].node.get_our_node_id(), 100000, 42);
47 nodes[0].disable_channel_signer_op(&nodes[1].node.get_our_node_id(), &temporary_channel_id, SignerOp::SignCounterpartyCommitment);
48 nodes[0].node.funding_transaction_generated(&temporary_channel_id, &nodes[1].node.get_our_node_id(), tx.clone()).unwrap();
49 check_added_monitors(&nodes[0], 0);
51 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
53 // Now re-enable the signer and simulate a retry. The temporary_channel_id won't work anymore so
54 // we have to dig out the real channel ID.
56 let channels = nodes[0].node.list_channels();
57 assert_eq!(channels.len(), 1, "expected one channel, not {}", channels.len());
58 channels[0].channel_id
61 nodes[0].enable_channel_signer_op(&nodes[1].node.get_our_node_id(), &chan_id, SignerOp::SignCounterpartyCommitment);
62 nodes[0].node.signer_unblocked(Some((nodes[1].node.get_our_node_id(), chan_id)));
64 let mut funding_created_msg = get_event_msg!(nodes[0], MessageSendEvent::SendFundingCreated, nodes[1].node.get_our_node_id());
65 nodes[1].node.handle_funding_created(&nodes[0].node.get_our_node_id(), &funding_created_msg);
66 check_added_monitors(&nodes[1], 1);
67 expect_channel_pending_event(&nodes[1], &nodes[0].node.get_our_node_id());
69 // nodes[0] <-- funding_signed --- nodes[1]
70 let funding_signed_msg = get_event_msg!(nodes[1], MessageSendEvent::SendFundingSigned, nodes[0].node.get_our_node_id());
71 nodes[0].node.handle_funding_signed(&nodes[1].node.get_our_node_id(), &funding_signed_msg);
72 check_added_monitors(&nodes[0], 1);
73 expect_channel_pending_event(&nodes[0], &nodes[1].node.get_our_node_id());
77 fn test_async_commitment_signature_for_funding_signed() {
78 // Simulate acquiring the signature for `funding_signed` asynchronously.
79 let chanmon_cfgs = create_chanmon_cfgs(2);
80 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
81 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
82 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
84 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None, None).unwrap();
86 // nodes[0] --- open_channel --> nodes[1]
87 let mut open_chan_msg = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
88 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &open_chan_msg);
90 // nodes[0] <-- accept_channel --- nodes[1]
91 nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), &get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id()));
93 // nodes[0] --- funding_created --> nodes[1]
94 let (temporary_channel_id, tx, _) = create_funding_transaction(&nodes[0], &nodes[1].node.get_our_node_id(), 100000, 42);
95 nodes[0].node.funding_transaction_generated(&temporary_channel_id, &nodes[1].node.get_our_node_id(), tx.clone()).unwrap();
96 check_added_monitors(&nodes[0], 0);
98 let mut funding_created_msg = get_event_msg!(nodes[0], MessageSendEvent::SendFundingCreated, nodes[1].node.get_our_node_id());
100 // Now let's make node[1]'s signer be unavailable while handling the `funding_created`. It should
101 // *not* broadcast a `funding_signed`...
102 nodes[1].disable_channel_signer_op(&nodes[0].node.get_our_node_id(), &temporary_channel_id, SignerOp::SignCounterpartyCommitment);
103 nodes[1].node.handle_funding_created(&nodes[0].node.get_our_node_id(), &funding_created_msg);
104 check_added_monitors(&nodes[1], 1);
106 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
108 // Now re-enable the signer and simulate a retry. The temporary_channel_id won't work anymore so
109 // we have to dig out the real channel ID.
111 let channels = nodes[0].node.list_channels();
112 assert_eq!(channels.len(), 1, "expected one channel, not {}", channels.len());
113 channels[0].channel_id
115 nodes[1].enable_channel_signer_op(&nodes[0].node.get_our_node_id(), &chan_id, SignerOp::SignCounterpartyCommitment);
116 nodes[1].node.signer_unblocked(Some((nodes[0].node.get_our_node_id(), chan_id)));
118 expect_channel_pending_event(&nodes[1], &nodes[0].node.get_our_node_id());
120 // nodes[0] <-- funding_signed --- nodes[1]
121 let funding_signed_msg = get_event_msg!(nodes[1], MessageSendEvent::SendFundingSigned, nodes[0].node.get_our_node_id());
122 nodes[0].node.handle_funding_signed(&nodes[1].node.get_our_node_id(), &funding_signed_msg);
123 check_added_monitors(&nodes[0], 1);
124 expect_channel_pending_event(&nodes[0], &nodes[1].node.get_our_node_id());
128 fn test_async_commitment_signature_for_commitment_signed() {
129 let chanmon_cfgs = create_chanmon_cfgs(2);
130 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
131 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
132 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
133 let (_, _, chan_id, _) = create_announced_chan_between_nodes(&nodes, 0, 1);
138 let (route, our_payment_hash, _our_payment_preimage, our_payment_secret) = get_route_and_payment_hash!(src, dst, 8000000);
139 src.node.send_payment_with_route(&route, our_payment_hash,
140 RecipientOnionFields::secret_only(our_payment_secret), PaymentId(our_payment_hash.0)).unwrap();
141 check_added_monitors!(src, 1);
143 // Pass the payment along the route.
144 let payment_event = {
145 let mut events = src.node.get_and_clear_pending_msg_events();
146 assert_eq!(events.len(), 1);
147 SendEvent::from_event(events.remove(0))
149 assert_eq!(payment_event.node_id, dst.node.get_our_node_id());
150 assert_eq!(payment_event.msgs.len(), 1);
152 dst.node.handle_update_add_htlc(&src.node.get_our_node_id(), &payment_event.msgs[0]);
154 // Mark dst's signer as unavailable and handle src's commitment_signed: while dst won't yet have a
155 // `commitment_signed` of its own to offer, it should publish a `revoke_and_ack`.
156 dst.disable_channel_signer_op(&src.node.get_our_node_id(), &chan_id, SignerOp::SignCounterpartyCommitment);
157 dst.node.handle_commitment_signed(&src.node.get_our_node_id(), &payment_event.commitment_msg);
158 check_added_monitors(dst, 1);
160 get_event_msg!(dst, MessageSendEvent::SendRevokeAndACK, src.node.get_our_node_id());
162 // Mark dst's signer as available and retry: we now expect to see dst's `commitment_signed`.
163 dst.enable_channel_signer_op(&src.node.get_our_node_id(), &chan_id, SignerOp::SignCounterpartyCommitment);
164 dst.node.signer_unblocked(Some((src.node.get_our_node_id(), chan_id)));
166 let events = dst.node.get_and_clear_pending_msg_events();
167 assert_eq!(events.len(), 1, "expected one message, got {}", events.len());
168 if let MessageSendEvent::UpdateHTLCs { ref node_id, .. } = events[0] {
169 assert_eq!(node_id, &src.node.get_our_node_id());
171 panic!("expected UpdateHTLCs message, not {:?}", events[0]);
176 fn test_async_commitment_signature_for_funding_signed_0conf() {
177 // Simulate acquiring the signature for `funding_signed` asynchronously for a zero-conf channel.
178 let mut manually_accept_config = test_default_channel_config();
179 manually_accept_config.manually_accept_inbound_channels = true;
181 let chanmon_cfgs = create_chanmon_cfgs(2);
182 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
183 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, Some(manually_accept_config)]);
184 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
186 // nodes[0] --- open_channel --> nodes[1]
187 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None, None).unwrap();
188 let open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
190 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &open_channel);
193 let events = nodes[1].node.get_and_clear_pending_events();
194 assert_eq!(events.len(), 1, "Expected one event, got {}", events.len());
196 Event::OpenChannelRequest { temporary_channel_id, .. } => {
197 nodes[1].node.accept_inbound_channel_from_trusted_peer_0conf(
198 temporary_channel_id, &nodes[0].node.get_our_node_id(), 0)
199 .expect("Unable to accept inbound zero-conf channel");
201 ev => panic!("Expected OpenChannelRequest, not {:?}", ev)
205 // nodes[0] <-- accept_channel --- nodes[1]
206 let accept_channel = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
207 assert_eq!(accept_channel.common_fields.minimum_depth, 0, "Expected minimum depth of 0");
208 nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), &accept_channel);
210 // nodes[0] --- funding_created --> nodes[1]
211 let (temporary_channel_id, tx, _) = create_funding_transaction(&nodes[0], &nodes[1].node.get_our_node_id(), 100000, 42);
212 nodes[0].node.funding_transaction_generated(&temporary_channel_id, &nodes[1].node.get_our_node_id(), tx.clone()).unwrap();
213 check_added_monitors(&nodes[0], 0);
215 let mut funding_created_msg = get_event_msg!(nodes[0], MessageSendEvent::SendFundingCreated, nodes[1].node.get_our_node_id());
217 // Now let's make node[1]'s signer be unavailable while handling the `funding_created`. It should
218 // *not* broadcast a `funding_signed`...
219 nodes[1].disable_channel_signer_op(&nodes[0].node.get_our_node_id(), &temporary_channel_id, SignerOp::SignCounterpartyCommitment);
220 nodes[1].node.handle_funding_created(&nodes[0].node.get_our_node_id(), &funding_created_msg);
221 check_added_monitors(&nodes[1], 1);
223 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
225 // Now re-enable the signer and simulate a retry. The temporary_channel_id won't work anymore so
226 // we have to dig out the real channel ID.
228 let channels = nodes[0].node.list_channels();
229 assert_eq!(channels.len(), 1, "expected one channel, not {}", channels.len());
230 channels[0].channel_id
233 // At this point, we basically expect the channel to open like a normal zero-conf channel.
234 nodes[1].enable_channel_signer_op(&nodes[0].node.get_our_node_id(), &chan_id, SignerOp::SignCounterpartyCommitment);
235 nodes[1].node.signer_unblocked(Some((nodes[0].node.get_our_node_id(), chan_id)));
237 let (funding_signed, channel_ready_1) = {
238 let events = nodes[1].node.get_and_clear_pending_msg_events();
239 assert_eq!(events.len(), 2);
240 let funding_signed = match &events[0] {
241 MessageSendEvent::SendFundingSigned { msg, .. } => msg.clone(),
242 ev => panic!("Expected SendFundingSigned, not {:?}", ev)
244 let channel_ready = match &events[1] {
245 MessageSendEvent::SendChannelReady { msg, .. } => msg.clone(),
246 ev => panic!("Expected SendChannelReady, not {:?}", ev)
248 (funding_signed, channel_ready)
251 nodes[0].node.handle_funding_signed(&nodes[1].node.get_our_node_id(), &funding_signed);
252 expect_channel_pending_event(&nodes[0], &nodes[1].node.get_our_node_id());
253 expect_channel_pending_event(&nodes[1], &nodes[0].node.get_our_node_id());
254 check_added_monitors(&nodes[0], 1);
256 let channel_ready_0 = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReady, nodes[1].node.get_our_node_id());
258 nodes[0].node.handle_channel_ready(&nodes[1].node.get_our_node_id(), &channel_ready_1);
259 expect_channel_ready_event(&nodes[0], &nodes[1].node.get_our_node_id());
261 nodes[1].node.handle_channel_ready(&nodes[0].node.get_our_node_id(), &channel_ready_0);
262 expect_channel_ready_event(&nodes[1], &nodes[0].node.get_our_node_id());
264 let channel_update_0 = get_event_msg!(nodes[0], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id());
265 let channel_update_1 = get_event_msg!(nodes[1], MessageSendEvent::SendChannelUpdate, nodes[0].node.get_our_node_id());
267 nodes[0].node.handle_channel_update(&nodes[1].node.get_our_node_id(), &channel_update_1);
268 nodes[1].node.handle_channel_update(&nodes[0].node.get_our_node_id(), &channel_update_0);
270 assert_eq!(nodes[0].node.list_usable_channels().len(), 1);
271 assert_eq!(nodes[1].node.list_usable_channels().len(), 1);
275 fn test_async_commitment_signature_for_peer_disconnect() {
276 let chanmon_cfgs = create_chanmon_cfgs(2);
277 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
278 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
279 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
280 let (_, _, chan_id, _) = create_announced_chan_between_nodes(&nodes, 0, 1);
285 let (route, our_payment_hash, _our_payment_preimage, our_payment_secret) = get_route_and_payment_hash!(src, dst, 8000000);
286 src.node.send_payment_with_route(&route, our_payment_hash,
287 RecipientOnionFields::secret_only(our_payment_secret), PaymentId(our_payment_hash.0)).unwrap();
288 check_added_monitors!(src, 1);
290 // Pass the payment along the route.
291 let payment_event = {
292 let mut events = src.node.get_and_clear_pending_msg_events();
293 assert_eq!(events.len(), 1);
294 SendEvent::from_event(events.remove(0))
296 assert_eq!(payment_event.node_id, dst.node.get_our_node_id());
297 assert_eq!(payment_event.msgs.len(), 1);
299 dst.node.handle_update_add_htlc(&src.node.get_our_node_id(), &payment_event.msgs[0]);
301 // Mark dst's signer as unavailable and handle src's commitment_signed: while dst won't yet have a
302 // `commitment_signed` of its own to offer, it should publish a `revoke_and_ack`.
303 dst.disable_channel_signer_op(&src.node.get_our_node_id(), &chan_id, SignerOp::SignCounterpartyCommitment);
304 dst.node.handle_commitment_signed(&src.node.get_our_node_id(), &payment_event.commitment_msg);
305 check_added_monitors(dst, 1);
307 get_event_msg!(dst, MessageSendEvent::SendRevokeAndACK, src.node.get_our_node_id());
309 // Now disconnect and reconnect the peers.
310 src.node.peer_disconnected(&dst.node.get_our_node_id());
311 dst.node.peer_disconnected(&src.node.get_our_node_id());
312 let mut reconnect_args = ReconnectArgs::new(&nodes[0], &nodes[1]);
313 reconnect_args.send_channel_ready = (false, false);
314 reconnect_args.pending_raa = (true, false);
315 reconnect_nodes(reconnect_args);
317 // Mark dst's signer as available and retry: we now expect to see dst's `commitment_signed`.
318 dst.enable_channel_signer_op(&src.node.get_our_node_id(), &chan_id, SignerOp::SignCounterpartyCommitment);
319 dst.node.signer_unblocked(Some((src.node.get_our_node_id(), chan_id)));
322 let events = dst.node.get_and_clear_pending_msg_events();
323 assert_eq!(events.len(), 1, "expected one message, got {}", events.len());
324 if let MessageSendEvent::UpdateHTLCs { ref node_id, .. } = events[0] {
325 assert_eq!(node_id, &src.node.get_our_node_id());
327 panic!("expected UpdateHTLCs message, not {:?}", events[0]);
332 fn do_test_async_holder_signatures(anchors: bool, remote_commitment: bool) {
333 // Ensures that we can obtain holder signatures for commitment and HTLC transactions
334 // asynchronously by allowing their retrieval to fail and retrying via
335 // `ChannelMonitor::signer_unblocked`.
336 let mut config = test_default_channel_config();
338 config.channel_handshake_config.negotiate_anchors_zero_fee_htlc_tx = true;
339 config.manually_accept_inbound_channels = true;
342 let chanmon_cfgs = create_chanmon_cfgs(2);
343 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
344 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[Some(config), Some(config)]);
345 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
347 let closing_node = if remote_commitment { &nodes[1] } else { &nodes[0] };
348 let coinbase_tx = Transaction {
349 version: Version::TWO,
350 lock_time: LockTime::ZERO,
351 input: vec![TxIn { ..Default::default() }],
354 value: Amount::ONE_BTC,
355 script_pubkey: closing_node.wallet_source.get_change_script().unwrap(),
360 *nodes[0].fee_estimator.sat_per_kw.lock().unwrap() *= 2;
361 *nodes[1].fee_estimator.sat_per_kw.lock().unwrap() *= 2;
362 closing_node.wallet_source.add_utxo(bitcoin::OutPoint { txid: coinbase_tx.txid(), vout: 0 }, coinbase_tx.output[0].value);
365 // Route an HTLC and set the signer as unavailable.
366 let (_, _, chan_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 1);
367 route_payment(&nodes[0], &[&nodes[1]], 1_000_000);
368 let error_message = "Channel force-closed";
371 if remote_commitment {
372 // Make the counterparty broadcast its latest commitment.
373 nodes[1].node.force_close_broadcasting_latest_txn(&chan_id, &nodes[0].node.get_our_node_id(), error_message.to_string()).unwrap();
374 check_added_monitors(&nodes[1], 1);
375 check_closed_broadcast(&nodes[1], 1, true);
376 check_closed_event(&nodes[1], 1, ClosureReason::HolderForceClosed { broadcasted_latest_txn: Some(true) }, false, &[nodes[0].node.get_our_node_id()], 100_000);
378 nodes[0].disable_channel_signer_op(&nodes[1].node.get_our_node_id(), &chan_id, SignerOp::SignHolderCommitment);
379 nodes[0].disable_channel_signer_op(&nodes[1].node.get_our_node_id(), &chan_id, SignerOp::SignHolderHtlcTransaction);
380 // We'll connect blocks until the sender has to go onchain to time out the HTLC.
381 connect_blocks(&nodes[0], TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + 1);
383 // No transaction should be broadcast since the signer is not available yet.
384 assert!(nodes[0].tx_broadcaster.txn_broadcast().is_empty());
385 assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
387 // Mark it as available now, we should see the signed commitment transaction.
388 nodes[0].enable_channel_signer_op(&nodes[1].node.get_our_node_id(), &chan_id, SignerOp::SignHolderCommitment);
389 nodes[0].enable_channel_signer_op(&nodes[1].node.get_our_node_id(), &chan_id, SignerOp::SignHolderHtlcTransaction);
390 get_monitor!(nodes[0], chan_id).signer_unblocked(nodes[0].tx_broadcaster, nodes[0].fee_estimator, &nodes[0].logger);
393 let commitment_tx = {
394 let mut txn = closing_node.tx_broadcaster.txn_broadcast();
395 if anchors || remote_commitment {
396 assert_eq!(txn.len(), 1);
397 check_spends!(txn[0], funding_tx);
400 assert_eq!(txn.len(), 2);
401 if txn[0].input[0].previous_output.txid == funding_tx.txid() {
402 check_spends!(txn[0], funding_tx);
403 check_spends!(txn[1], txn[0]);
406 check_spends!(txn[1], funding_tx);
407 check_spends!(txn[0], txn[1]);
413 // Mark it as unavailable again to now test the HTLC transaction. We'll mine the commitment such
414 // that the HTLC transaction is retried.
415 let sign_htlc_op = if remote_commitment {
416 SignerOp::SignCounterpartyHtlcTransaction
418 SignerOp::SignHolderHtlcTransaction
420 nodes[0].disable_channel_signer_op(&nodes[1].node.get_our_node_id(), &chan_id, SignerOp::SignHolderCommitment);
421 nodes[0].disable_channel_signer_op(&nodes[1].node.get_our_node_id(), &chan_id, sign_htlc_op);
422 mine_transaction(&nodes[0], &commitment_tx);
424 check_added_monitors(&nodes[0], 1);
425 check_closed_broadcast(&nodes[0], 1, true);
426 check_closed_event(&nodes[0], 1, ClosureReason::CommitmentTxConfirmed, false, &[nodes[1].node.get_our_node_id()], 100_000);
428 // If the counterparty broadcast its latest commitment, we need to mine enough blocks for the
430 if remote_commitment {
431 connect_blocks(&nodes[0], TEST_FINAL_CLTV);
434 // No HTLC transaction should be broadcast as the signer is not available yet.
435 if anchors && !remote_commitment {
436 handle_bump_htlc_event(&nodes[0], 1);
438 let txn = nodes[0].tx_broadcaster.txn_broadcast();
439 assert!(txn.is_empty(), "expected no transaction to be broadcast, got {:?}", txn);
441 // Mark it as available now, we should see the signed HTLC transaction.
442 nodes[0].enable_channel_signer_op(&nodes[1].node.get_our_node_id(), &chan_id, SignerOp::SignHolderCommitment);
443 nodes[0].enable_channel_signer_op(&nodes[1].node.get_our_node_id(), &chan_id, sign_htlc_op);
444 get_monitor!(nodes[0], chan_id).signer_unblocked(nodes[0].tx_broadcaster, nodes[0].fee_estimator, &nodes[0].logger);
446 if anchors && !remote_commitment {
447 handle_bump_htlc_event(&nodes[0], 1);
450 let txn = nodes[0].tx_broadcaster.txn_broadcast();
451 assert_eq!(txn.len(), 1);
452 check_spends!(txn[0], commitment_tx, coinbase_tx);
457 fn test_async_holder_signatures_no_anchors() {
458 do_test_async_holder_signatures(false, false);
462 fn test_async_holder_signatures_remote_commitment_no_anchors() {
463 do_test_async_holder_signatures(false, true);
467 fn test_async_holder_signatures_anchors() {
468 do_test_async_holder_signatures(true, false);
472 fn test_async_holder_signatures_remote_commitment_anchors() {
473 do_test_async_holder_signatures(true, true);