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 of our shutdown and closing_signed negotiation logic.
12 use crate::chain::keysinterface::{EntropySource, SignerProvider};
13 use crate::chain::transaction::OutPoint;
14 use crate::events::{Event, MessageSendEvent, MessageSendEventsProvider, ClosureReason};
15 use crate::ln::channelmanager::{self, PaymentSendFailure, PaymentId, RecipientOnionFields};
16 use crate::routing::router::{PaymentParameters, get_route};
18 use crate::ln::msgs::{ChannelMessageHandler, ErrorAction};
19 use crate::ln::script::ShutdownScript;
20 use crate::util::test_utils;
21 use crate::util::test_utils::OnGetShutdownScriptpubkey;
22 use crate::util::errors::APIError;
23 use crate::util::config::UserConfig;
24 use crate::util::string::UntrustedString;
26 use bitcoin::blockdata::script::Builder;
27 use bitcoin::blockdata::opcodes;
28 use bitcoin::network::constants::Network;
29 use bitcoin::util::address::WitnessVersion;
33 use core::default::Default;
34 use std::convert::TryFrom;
36 use crate::ln::functional_test_utils::*;
37 use crate::ln::msgs::OptionalField::Present;
40 fn pre_funding_lock_shutdown_test() {
41 // Test sending a shutdown prior to channel_ready after funding generation
42 let chanmon_cfgs = create_chanmon_cfgs(2);
43 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
44 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
45 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
46 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 8000000, 0);
47 mine_transaction(&nodes[0], &tx);
48 mine_transaction(&nodes[1], &tx);
50 nodes[0].node.close_channel(&OutPoint { txid: tx.txid(), index: 0 }.to_channel_id(), &nodes[1].node.get_our_node_id()).unwrap();
51 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
52 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
53 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
54 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown);
56 let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
57 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
58 let node_1_closing_signed = get_event_msg!(nodes[1], MessageSendEvent::SendClosingSigned, nodes[0].node.get_our_node_id());
59 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed);
60 let (_, node_0_2nd_closing_signed) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
61 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed.unwrap());
62 let (_, node_1_none) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
63 assert!(node_1_none.is_none());
65 assert!(nodes[0].node.list_channels().is_empty());
66 assert!(nodes[1].node.list_channels().is_empty());
67 check_closed_event!(nodes[0], 1, ClosureReason::CooperativeClosure);
68 check_closed_event!(nodes[1], 1, ClosureReason::CooperativeClosure);
72 fn updates_shutdown_wait() {
73 // Test sending a shutdown with outstanding updates pending
74 let chanmon_cfgs = create_chanmon_cfgs(3);
75 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
76 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
77 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
78 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
79 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
80 let logger = test_utils::TestLogger::new();
81 let scorer = test_utils::TestScorer::new();
82 let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet);
83 let random_seed_bytes = keys_manager.get_secure_random_bytes();
85 let (payment_preimage_0, payment_hash_0, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100_000);
87 nodes[0].node.close_channel(&chan_1.2, &nodes[1].node.get_our_node_id()).unwrap();
88 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
89 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
90 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
91 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown);
93 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
94 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
96 let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[0]);
98 let payment_params_1 = PaymentParameters::from_node_id(nodes[1].node.get_our_node_id(), TEST_FINAL_CLTV).with_features(nodes[1].node.invoice_features());
99 let route_1 = get_route(&nodes[0].node.get_our_node_id(), &payment_params_1, &nodes[0].network_graph.read_only(), None, 100000, &logger, &scorer, &random_seed_bytes).unwrap();
100 let payment_params_2 = PaymentParameters::from_node_id(nodes[0].node.get_our_node_id(), TEST_FINAL_CLTV).with_features(nodes[0].node.invoice_features());
101 let route_2 = get_route(&nodes[1].node.get_our_node_id(), &payment_params_2, &nodes[1].network_graph.read_only(), None, 100000, &logger, &scorer, &random_seed_bytes).unwrap();
102 unwrap_send_err!(nodes[0].node.send_payment_with_route(&route_1, payment_hash,
103 RecipientOnionFields::secret_only(payment_secret), PaymentId(payment_hash.0)
104 ), true, APIError::ChannelUnavailable {..}, {});
105 unwrap_send_err!(nodes[1].node.send_payment_with_route(&route_2, payment_hash,
106 RecipientOnionFields::secret_only(payment_secret), PaymentId(payment_hash.0)
107 ), true, APIError::ChannelUnavailable {..}, {});
109 nodes[2].node.claim_funds(payment_preimage_0);
110 check_added_monitors!(nodes[2], 1);
111 expect_payment_claimed!(nodes[2], payment_hash_0, 100_000);
113 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
114 assert!(updates.update_add_htlcs.is_empty());
115 assert!(updates.update_fail_htlcs.is_empty());
116 assert!(updates.update_fail_malformed_htlcs.is_empty());
117 assert!(updates.update_fee.is_none());
118 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
119 nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
120 expect_payment_forwarded!(nodes[1], nodes[0], nodes[2], Some(1000), false, false);
121 check_added_monitors!(nodes[1], 1);
122 let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
123 commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false);
125 assert!(updates_2.update_add_htlcs.is_empty());
126 assert!(updates_2.update_fail_htlcs.is_empty());
127 assert!(updates_2.update_fail_malformed_htlcs.is_empty());
128 assert!(updates_2.update_fee.is_none());
129 assert_eq!(updates_2.update_fulfill_htlcs.len(), 1);
130 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]);
131 commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
132 expect_payment_sent!(nodes[0], payment_preimage_0);
134 let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
135 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
136 let node_1_closing_signed = get_event_msg!(nodes[1], MessageSendEvent::SendClosingSigned, nodes[0].node.get_our_node_id());
137 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed);
138 let (_, node_0_2nd_closing_signed) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
139 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed.unwrap());
140 let (_, node_1_none) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
141 assert!(node_1_none.is_none());
142 check_closed_event!(nodes[0], 1, ClosureReason::CooperativeClosure);
143 check_closed_event!(nodes[1], 1, ClosureReason::CooperativeClosure);
145 assert!(nodes[0].node.list_channels().is_empty());
147 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
148 nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
149 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
150 assert!(nodes[1].node.list_channels().is_empty());
151 assert!(nodes[2].node.list_channels().is_empty());
152 check_closed_event!(nodes[1], 1, ClosureReason::CooperativeClosure);
153 check_closed_event!(nodes[2], 1, ClosureReason::CooperativeClosure);
157 fn htlc_fail_async_shutdown() {
158 // Test HTLCs fail if shutdown starts even if messages are delivered out-of-order
159 let chanmon_cfgs = create_chanmon_cfgs(3);
160 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
161 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
162 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
163 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
164 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
166 let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], 100000);
167 nodes[0].node.send_payment_with_route(&route, our_payment_hash,
168 RecipientOnionFields::secret_only(our_payment_secret), PaymentId(our_payment_hash.0)).unwrap();
169 check_added_monitors!(nodes[0], 1);
170 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
171 assert_eq!(updates.update_add_htlcs.len(), 1);
172 assert!(updates.update_fulfill_htlcs.is_empty());
173 assert!(updates.update_fail_htlcs.is_empty());
174 assert!(updates.update_fail_malformed_htlcs.is_empty());
175 assert!(updates.update_fee.is_none());
177 nodes[1].node.close_channel(&chan_1.2, &nodes[0].node.get_our_node_id()).unwrap();
178 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
179 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown);
180 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
182 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
183 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &updates.commitment_signed);
184 check_added_monitors!(nodes[1], 1);
185 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
186 commitment_signed_dance!(nodes[1], nodes[0], (), false, true, false);
188 let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
189 assert!(updates_2.update_add_htlcs.is_empty());
190 assert!(updates_2.update_fulfill_htlcs.is_empty());
191 assert_eq!(updates_2.update_fail_htlcs.len(), 1);
192 assert!(updates_2.update_fail_malformed_htlcs.is_empty());
193 assert!(updates_2.update_fee.is_none());
195 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fail_htlcs[0]);
196 commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
198 expect_payment_failed_with_update!(nodes[0], our_payment_hash, false, chan_2.0.contents.short_channel_id, true);
200 let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
201 assert_eq!(msg_events.len(), 1);
202 let node_0_closing_signed = match msg_events[0] {
203 MessageSendEvent::SendClosingSigned { ref node_id, ref msg } => {
204 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
207 _ => panic!("Unexpected event"),
210 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
211 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
212 let node_1_closing_signed = get_event_msg!(nodes[1], MessageSendEvent::SendClosingSigned, nodes[0].node.get_our_node_id());
213 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed);
214 let (_, node_0_2nd_closing_signed) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
215 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed.unwrap());
216 let (_, node_1_none) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
217 assert!(node_1_none.is_none());
219 assert!(nodes[0].node.list_channels().is_empty());
221 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
222 nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
223 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
224 assert!(nodes[1].node.list_channels().is_empty());
225 assert!(nodes[2].node.list_channels().is_empty());
226 check_closed_event!(nodes[0], 1, ClosureReason::CooperativeClosure);
227 check_closed_event!(nodes[1], 2, ClosureReason::CooperativeClosure);
228 check_closed_event!(nodes[2], 1, ClosureReason::CooperativeClosure);
231 fn do_test_shutdown_rebroadcast(recv_count: u8) {
232 // Test that shutdown/closing_signed is re-sent on reconnect with a variable number of
233 // messages delivered prior to disconnect
234 let chanmon_cfgs = create_chanmon_cfgs(3);
235 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
236 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
237 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
238 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
239 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
241 let (payment_preimage, payment_hash, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100_000);
243 nodes[1].node.close_channel(&chan_1.2, &nodes[0].node.get_our_node_id()).unwrap();
244 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
246 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown);
247 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
249 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
253 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
254 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
256 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: nodes[1].node.init_features(), remote_network_address: None }, true).unwrap();
257 let node_0_reestablish = get_chan_reestablish_msgs!(nodes[0], nodes[1]).pop().unwrap();
258 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: nodes[0].node.init_features(), remote_network_address: None }, false).unwrap();
259 let node_1_reestablish = get_chan_reestablish_msgs!(nodes[1], nodes[0]).pop().unwrap();
261 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_reestablish);
262 let node_1_2nd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
263 assert!(node_1_shutdown == node_1_2nd_shutdown);
265 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_reestablish);
266 let node_0_2nd_shutdown = if recv_count > 0 {
267 let node_0_2nd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
268 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_2nd_shutdown);
271 let node_0_chan_update = get_event_msg!(nodes[0], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id());
272 assert_eq!(node_0_chan_update.contents.flags & 2, 0); // "disabled" flag must not be set as we just reconnected.
273 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_2nd_shutdown);
274 get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id())
276 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_2nd_shutdown);
278 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
279 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
281 nodes[2].node.claim_funds(payment_preimage);
282 check_added_monitors!(nodes[2], 1);
283 expect_payment_claimed!(nodes[2], payment_hash, 100_000);
285 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
286 assert!(updates.update_add_htlcs.is_empty());
287 assert!(updates.update_fail_htlcs.is_empty());
288 assert!(updates.update_fail_malformed_htlcs.is_empty());
289 assert!(updates.update_fee.is_none());
290 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
291 nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
292 expect_payment_forwarded!(nodes[1], nodes[0], nodes[2], Some(1000), false, false);
293 check_added_monitors!(nodes[1], 1);
294 let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
295 commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false);
297 assert!(updates_2.update_add_htlcs.is_empty());
298 assert!(updates_2.update_fail_htlcs.is_empty());
299 assert!(updates_2.update_fail_malformed_htlcs.is_empty());
300 assert!(updates_2.update_fee.is_none());
301 assert_eq!(updates_2.update_fulfill_htlcs.len(), 1);
302 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]);
303 commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
304 expect_payment_sent!(nodes[0], payment_preimage);
306 let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
308 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
309 let node_1_closing_signed = get_event_msg!(nodes[1], MessageSendEvent::SendClosingSigned, nodes[0].node.get_our_node_id());
310 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed);
311 let (_, node_0_2nd_closing_signed) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
312 assert!(node_0_2nd_closing_signed.is_some());
315 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
316 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id());
318 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: nodes[0].node.init_features(), remote_network_address: None }, true).unwrap();
319 let node_1_2nd_reestablish = get_chan_reestablish_msgs!(nodes[1], nodes[0]).pop().unwrap();
320 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: nodes[1].node.init_features(), remote_network_address: None }, false).unwrap();
322 // If all closing_signeds weren't delivered we can just resume where we left off...
323 let node_0_2nd_reestablish = get_chan_reestablish_msgs!(nodes[0], nodes[1]).pop().unwrap();
325 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_2nd_reestablish);
326 let node_0_msgs = nodes[0].node.get_and_clear_pending_msg_events();
327 assert_eq!(node_0_msgs.len(), 2);
328 let node_0_2nd_closing_signed = match node_0_msgs[1] {
329 MessageSendEvent::SendClosingSigned { ref msg, .. } => {
330 assert_eq!(node_0_closing_signed, *msg);
336 let node_0_3rd_shutdown = match node_0_msgs[0] {
337 MessageSendEvent::SendShutdown { ref msg, .. } => {
338 assert_eq!(node_0_2nd_shutdown, *msg);
343 assert!(node_0_2nd_shutdown == node_0_3rd_shutdown);
345 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_2nd_reestablish);
346 let node_1_3rd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
347 assert!(node_1_3rd_shutdown == node_1_2nd_shutdown);
349 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_3rd_shutdown);
350 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
352 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_3rd_shutdown);
354 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed);
355 let node_1_closing_signed = get_event_msg!(nodes[1], MessageSendEvent::SendClosingSigned, nodes[0].node.get_our_node_id());
356 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed);
357 let (_, node_0_2nd_closing_signed) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
358 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed.unwrap());
359 let (_, node_1_none) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
360 assert!(node_1_none.is_none());
361 check_closed_event!(nodes[1], 1, ClosureReason::CooperativeClosure);
363 // If one node, however, received + responded with an identical closing_signed we end
364 // up erroring and node[0] will try to broadcast its own latest commitment transaction.
365 // There isn't really anything better we can do simply, but in the future we might
366 // explore storing a set of recently-closed channels that got disconnected during
367 // closing_signed and avoiding broadcasting local commitment txn for some timeout to
368 // give our counterparty enough time to (potentially) broadcast a cooperative closing
370 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
372 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_2nd_reestablish);
373 let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
374 assert_eq!(msg_events.len(), 1);
375 if let MessageSendEvent::HandleError { ref action, .. } = msg_events[0] {
377 &ErrorAction::SendErrorMessage { ref msg } => {
378 nodes[1].node.handle_error(&nodes[0].node.get_our_node_id(), &msg);
379 assert_eq!(msg.channel_id, chan_1.2);
381 _ => panic!("Unexpected event!"),
383 } else { panic!("Needed SendErrorMessage close"); }
385 // get_closing_signed_broadcast usually eats the BroadcastChannelUpdate for us and
386 // checks it, but in this case nodes[1] didn't ever get a chance to receive a
387 // closing_signed so we do it ourselves
388 check_closed_broadcast!(nodes[1], false);
389 check_added_monitors!(nodes[1], 1);
390 check_closed_event!(nodes[1], 1, ClosureReason::CounterpartyForceClosed { peer_msg: UntrustedString(format!("Got a message for a channel from the wrong node! No such channel for the passed counterparty_node_id {}", &nodes[1].node.get_our_node_id())) });
393 assert!(nodes[0].node.list_channels().is_empty());
395 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
396 nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
397 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
398 assert!(nodes[1].node.list_channels().is_empty());
399 assert!(nodes[2].node.list_channels().is_empty());
400 check_closed_event!(nodes[0], 1, ClosureReason::CooperativeClosure);
401 check_closed_event!(nodes[1], 1, ClosureReason::CooperativeClosure);
402 check_closed_event!(nodes[2], 1, ClosureReason::CooperativeClosure);
406 fn test_shutdown_rebroadcast() {
407 do_test_shutdown_rebroadcast(0);
408 do_test_shutdown_rebroadcast(1);
409 do_test_shutdown_rebroadcast(2);
413 fn test_upfront_shutdown_script() {
414 // BOLT 2 : Option upfront shutdown script, if peer commit its closing_script at channel opening
415 // enforce it at shutdown message
417 let mut config = UserConfig::default();
418 config.channel_handshake_config.announced_channel = true;
419 config.channel_handshake_limits.force_announced_channel_preference = false;
420 config.channel_handshake_config.commit_upfront_shutdown_pubkey = false;
421 let user_cfgs = [None, Some(config), None];
422 let chanmon_cfgs = create_chanmon_cfgs(3);
423 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
424 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs);
425 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
427 // We test that in case of peer committing upfront to a script, if it changes at closing, we refuse to sign
428 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 1000000, 1000000);
429 nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id(), &nodes[2].node.get_our_node_id()).unwrap();
430 let node_0_orig_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[2].node.get_our_node_id());
431 let mut node_0_shutdown = node_0_orig_shutdown.clone();
432 node_0_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
433 // Test we enforce upfront_scriptpbukey if by providing a different one at closing that we warn
434 // the peer and ignore the message.
435 nodes[2].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
436 assert!(regex::Regex::new(r"Got shutdown request with a scriptpubkey \([A-Fa-f0-9]+\) which did not match their previous scriptpubkey.")
437 .unwrap().is_match(&check_warn_msg!(nodes[2], nodes[0].node.get_our_node_id(), chan.2)));
438 // This allows nodes[2] to retry the shutdown message, which should get a response:
439 nodes[2].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_orig_shutdown);
440 get_event_msg!(nodes[2], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
442 // We test that in case of peer committing upfront to a script, if it doesn't change at closing, we sign
443 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 1000000, 1000000);
444 nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id(), &nodes[2].node.get_our_node_id()).unwrap();
445 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[2].node.get_our_node_id());
446 // We test that in case of peer committing upfront to a script, if it oesn't change at closing, we sign
447 nodes[2].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
448 let events = nodes[2].node.get_and_clear_pending_msg_events();
449 assert_eq!(events.len(), 1);
451 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[0].node.get_our_node_id()) }
452 _ => panic!("Unexpected event"),
455 // We test that if case of peer non-signaling we don't enforce committed script at channel opening
456 *nodes[0].override_init_features.borrow_mut() = Some(nodes[0].node.init_features().clear_upfront_shutdown_script());
457 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000);
458 nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id(), &nodes[1].node.get_our_node_id()).unwrap();
459 let node_1_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
460 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_1_shutdown);
461 check_added_monitors!(nodes[1], 1);
462 let events = nodes[1].node.get_and_clear_pending_msg_events();
463 assert_eq!(events.len(), 1);
465 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[0].node.get_our_node_id()) }
466 _ => panic!("Unexpected event"),
469 // We test that if user opt-out, we provide a zero-length script at channel opening and we are able to close
470 // channel smoothly, opt-out is from channel initiator here
471 *nodes[0].override_init_features.borrow_mut() = None;
472 let chan = create_announced_chan_between_nodes_with_value(&nodes, 1, 0, 1000000, 1000000);
473 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id(), &nodes[0].node.get_our_node_id()).unwrap();
474 check_added_monitors!(nodes[1], 1);
475 let node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
476 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_0_shutdown);
477 let events = nodes[0].node.get_and_clear_pending_msg_events();
478 assert_eq!(events.len(), 1);
480 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
481 _ => panic!("Unexpected event"),
484 //// We test that if user opt-out, we provide a zero-length script at channel opening and we are able to close
485 //// channel smoothly
486 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000);
487 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id(), &nodes[0].node.get_our_node_id()).unwrap();
488 check_added_monitors!(nodes[1], 1);
489 let node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
490 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_0_shutdown);
491 let events = nodes[0].node.get_and_clear_pending_msg_events();
492 assert_eq!(events.len(), 2);
494 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
495 _ => panic!("Unexpected event"),
498 MessageSendEvent::SendClosingSigned { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
499 _ => panic!("Unexpected event"),
504 fn test_unsupported_anysegwit_upfront_shutdown_script() {
505 let chanmon_cfgs = create_chanmon_cfgs(2);
506 let mut node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
507 // Clear shutdown_anysegwit on initiator
508 *node_cfgs[0].override_init_features.borrow_mut() = Some(channelmanager::provided_init_features(&test_default_channel_config()).clear_shutdown_anysegwit());
509 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
510 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
512 // Use a non-v0 segwit script supported by option_shutdown_anysegwit
513 let anysegwit_shutdown_script = Builder::new()
515 .push_slice(&[0, 40])
518 // Check script when handling an open_channel message
519 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
520 let mut open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
521 open_channel.shutdown_scriptpubkey = Present(anysegwit_shutdown_script.clone());
522 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &open_channel);
524 let events = nodes[1].node.get_and_clear_pending_msg_events();
525 assert_eq!(events.len(), 1);
527 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
528 assert_eq!(node_id, nodes[0].node.get_our_node_id());
529 assert_eq!(msg.data, "Peer is signaling upfront_shutdown but has provided an unacceptable scriptpubkey format: Script(OP_PUSHNUM_16 OP_PUSHBYTES_2 0028)");
531 _ => panic!("Unexpected event"),
534 let chanmon_cfgs = create_chanmon_cfgs(2);
535 let mut node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
536 // Clear shutdown_anysegwit on responder
537 *node_cfgs[1].override_init_features.borrow_mut() = Some(channelmanager::provided_init_features(&test_default_channel_config()).clear_shutdown_anysegwit());
538 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
539 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
541 // Check script when handling an accept_channel message
542 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
543 let open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
544 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &open_channel);
545 let mut accept_channel = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
546 accept_channel.shutdown_scriptpubkey = Present(anysegwit_shutdown_script.clone());
547 nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), &accept_channel);
549 let events = nodes[0].node.get_and_clear_pending_msg_events();
550 assert_eq!(events.len(), 1);
552 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
553 assert_eq!(node_id, nodes[1].node.get_our_node_id());
554 assert_eq!(msg.data, "Peer is signaling upfront_shutdown but has provided an unacceptable scriptpubkey format: Script(OP_PUSHNUM_16 OP_PUSHBYTES_2 0028)");
556 _ => panic!("Unexpected event"),
558 check_closed_event!(nodes[0], 1, ClosureReason::ProcessingError { err: "Peer is signaling upfront_shutdown but has provided an unacceptable scriptpubkey format: Script(OP_PUSHNUM_16 OP_PUSHBYTES_2 0028)".to_string() });
562 fn test_invalid_upfront_shutdown_script() {
563 let chanmon_cfgs = create_chanmon_cfgs(2);
564 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
565 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
566 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
568 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
570 // Use a segwit v0 script with an unsupported witness program
571 let mut open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
572 open_channel.shutdown_scriptpubkey = Present(Builder::new().push_int(0)
575 nodes[0].node.handle_open_channel(&nodes[1].node.get_our_node_id(), &open_channel);
577 let events = nodes[0].node.get_and_clear_pending_msg_events();
578 assert_eq!(events.len(), 1);
580 MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => {
581 assert_eq!(node_id, nodes[1].node.get_our_node_id());
582 assert_eq!(msg.data, "Peer is signaling upfront_shutdown but has provided an unacceptable scriptpubkey format: Script(OP_0 OP_PUSHBYTES_2 0000)");
584 _ => panic!("Unexpected event"),
589 fn test_segwit_v0_shutdown_script() {
590 let mut config = UserConfig::default();
591 config.channel_handshake_config.announced_channel = true;
592 config.channel_handshake_limits.force_announced_channel_preference = false;
593 config.channel_handshake_config.commit_upfront_shutdown_pubkey = false;
594 let user_cfgs = [None, Some(config), None];
595 let chanmon_cfgs = create_chanmon_cfgs(3);
596 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
597 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs);
598 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
600 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
601 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id(), &nodes[0].node.get_our_node_id()).unwrap();
602 check_added_monitors!(nodes[1], 1);
604 // Use a segwit v0 script supported even without option_shutdown_anysegwit
605 let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
606 node_0_shutdown.scriptpubkey = Builder::new().push_int(0)
607 .push_slice(&[0; 20])
609 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_0_shutdown);
611 let events = nodes[0].node.get_and_clear_pending_msg_events();
612 assert_eq!(events.len(), 2);
614 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
615 _ => panic!("Unexpected event"),
618 MessageSendEvent::SendClosingSigned { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
619 _ => panic!("Unexpected event"),
624 fn test_anysegwit_shutdown_script() {
625 let mut config = UserConfig::default();
626 config.channel_handshake_config.announced_channel = true;
627 config.channel_handshake_limits.force_announced_channel_preference = false;
628 config.channel_handshake_config.commit_upfront_shutdown_pubkey = false;
629 let user_cfgs = [None, Some(config), None];
630 let chanmon_cfgs = create_chanmon_cfgs(3);
631 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
632 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs);
633 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
635 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
636 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id(), &nodes[0].node.get_our_node_id()).unwrap();
637 check_added_monitors!(nodes[1], 1);
639 // Use a non-v0 segwit script supported by option_shutdown_anysegwit
640 let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
641 node_0_shutdown.scriptpubkey = Builder::new().push_int(16)
644 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_0_shutdown);
646 let events = nodes[0].node.get_and_clear_pending_msg_events();
647 assert_eq!(events.len(), 2);
649 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
650 _ => panic!("Unexpected event"),
653 MessageSendEvent::SendClosingSigned { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
654 _ => panic!("Unexpected event"),
659 fn test_unsupported_anysegwit_shutdown_script() {
660 let mut config = UserConfig::default();
661 config.channel_handshake_config.announced_channel = true;
662 config.channel_handshake_limits.force_announced_channel_preference = false;
663 config.channel_handshake_config.commit_upfront_shutdown_pubkey = false;
664 let user_cfgs = [None, Some(config), None];
665 let chanmon_cfgs = create_chanmon_cfgs(3);
666 let mut node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
667 *node_cfgs[0].override_init_features.borrow_mut() = Some(channelmanager::provided_init_features(&config).clear_shutdown_anysegwit());
668 *node_cfgs[1].override_init_features.borrow_mut() = Some(channelmanager::provided_init_features(&config).clear_shutdown_anysegwit());
669 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs);
670 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
672 // Check that using an unsupported shutdown script fails and a supported one succeeds.
673 let supported_shutdown_script = chanmon_cfgs[1].keys_manager.get_shutdown_scriptpubkey().unwrap();
674 let unsupported_shutdown_script =
675 ShutdownScript::new_witness_program(WitnessVersion::V16, &[0, 40]).unwrap();
676 chanmon_cfgs[1].keys_manager
677 .expect(OnGetShutdownScriptpubkey { returns: unsupported_shutdown_script.clone() })
678 .expect(OnGetShutdownScriptpubkey { returns: supported_shutdown_script });
680 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
681 match nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id(), &nodes[0].node.get_our_node_id()) {
682 Err(APIError::IncompatibleShutdownScript { script }) => {
683 assert_eq!(script.into_inner(), unsupported_shutdown_script.clone().into_inner());
685 Err(e) => panic!("Unexpected error: {:?}", e),
686 Ok(_) => panic!("Expected error"),
688 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id(), &nodes[0].node.get_our_node_id()).unwrap();
689 check_added_monitors!(nodes[1], 1);
691 // Use a non-v0 segwit script unsupported without option_shutdown_anysegwit
692 let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
693 node_0_shutdown.scriptpubkey = unsupported_shutdown_script.into_inner();
694 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_0_shutdown);
696 assert_eq!(&check_warn_msg!(nodes[0], nodes[1].node.get_our_node_id(), chan.2),
697 "Got a nonstandard scriptpubkey (60020028) from remote peer");
701 fn test_invalid_shutdown_script() {
702 let mut config = UserConfig::default();
703 config.channel_handshake_config.announced_channel = true;
704 config.channel_handshake_limits.force_announced_channel_preference = false;
705 config.channel_handshake_config.commit_upfront_shutdown_pubkey = false;
706 let user_cfgs = [None, Some(config), None];
707 let chanmon_cfgs = create_chanmon_cfgs(3);
708 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
709 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs);
710 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
712 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
713 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id(), &nodes[0].node.get_our_node_id()).unwrap();
714 check_added_monitors!(nodes[1], 1);
716 // Use a segwit v0 script with an unsupported witness program
717 let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
718 node_0_shutdown.scriptpubkey = Builder::new().push_int(0)
721 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_0_shutdown);
723 assert_eq!(&check_warn_msg!(nodes[0], nodes[1].node.get_our_node_id(), chan.2),
724 "Got a nonstandard scriptpubkey (00020000) from remote peer");
728 fn test_user_shutdown_script() {
729 let mut config = test_default_channel_config();
730 config.channel_handshake_config.announced_channel = true;
731 config.channel_handshake_limits.force_announced_channel_preference = false;
732 config.channel_handshake_config.commit_upfront_shutdown_pubkey = false;
733 let user_cfgs = [None, Some(config), None];
734 let chanmon_cfgs = create_chanmon_cfgs(3);
735 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
736 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs);
737 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
739 // Segwit v0 script of the form OP_0 <20-byte hash>
740 let script = Builder::new().push_int(0)
741 .push_slice(&[0; 20])
744 let shutdown_script = ShutdownScript::try_from(script.clone()).unwrap();
746 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
747 nodes[1].node.close_channel_with_feerate_and_script(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id(), &nodes[0].node.get_our_node_id(), None, Some(shutdown_script)).unwrap();
748 check_added_monitors!(nodes[1], 1);
750 let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
752 assert_eq!(node_0_shutdown.scriptpubkey, script);
756 fn test_already_set_user_shutdown_script() {
757 let mut config = test_default_channel_config();
758 config.channel_handshake_config.announced_channel = true;
759 config.channel_handshake_limits.force_announced_channel_preference = false;
760 let user_cfgs = [None, Some(config), None];
761 let chanmon_cfgs = create_chanmon_cfgs(3);
762 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
763 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs);
764 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
766 // Segwit v0 script of the form OP_0 <20-byte hash>
767 let script = Builder::new().push_int(0)
768 .push_slice(&[0; 20])
771 let shutdown_script = ShutdownScript::try_from(script).unwrap();
773 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
774 let result = nodes[1].node.close_channel_with_feerate_and_script(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id(), &nodes[0].node.get_our_node_id(), None, Some(shutdown_script));
776 assert_eq!(result, Err(APIError::APIMisuseError { err: "Cannot override shutdown script for a channel with one already set".to_string() }));
786 fn do_test_closing_signed_reinit_timeout(timeout_step: TimeoutStep) {
787 // The range-based closing signed negotiation allows the funder to restart the process with a
788 // new range if the previous range did not overlap. This allows implementations to request user
789 // intervention allowing users to enter a new fee range. We do not implement the sending side
790 // of this, instead opting to allow users to enter an explicit "willing to pay up to X to avoid
791 // force-closing" value and relying on that instead.
793 // Here we run test the fundee side of that restart mechanism, implementing the funder side of
795 let chanmon_cfgs = create_chanmon_cfgs(2);
796 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
797 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
798 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
799 let chan_id = create_announced_chan_between_nodes(&nodes, 0, 1).2;
801 send_payment(&nodes[0], &[&nodes[1]], 8_000_000);
803 nodes[0].node.close_channel(&chan_id, &nodes[1].node.get_our_node_id()).unwrap();
804 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
805 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
806 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
807 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown);
810 // Now we set nodes[1] to require a relatively high feerate for closing. This should result
811 // in it rejecting nodes[0]'s initial closing_signed, giving nodes[0] a chance to try
813 let mut feerate_lock = chanmon_cfgs[1].fee_estimator.sat_per_kw.lock().unwrap();
817 let mut node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
818 // nodes[0] should use a "reasonable" feerate, well under the 10 sat/vByte that nodes[1] thinks
819 // is the current prevailing feerate.
820 assert!(node_0_closing_signed.fee_satoshis <= 500);
822 if timeout_step != TimeoutStep::AfterShutdown {
823 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
824 assert!(check_warn_msg!(nodes[1], nodes[0].node.get_our_node_id(), chan_id)
825 .starts_with("Unable to come to consensus about closing feerate"));
827 // Now deliver a mutated closing_signed indicating a higher acceptable fee range, which
828 // nodes[1] should happily accept and respond to.
829 node_0_closing_signed.fee_range.as_mut().unwrap().max_fee_satoshis *= 10;
831 let mut node_0_per_peer_lock;
832 let mut node_0_peer_state_lock;
833 get_channel_ref!(nodes[0], nodes[1], node_0_per_peer_lock, node_0_peer_state_lock, chan_id).closing_fee_limits.as_mut().unwrap().1 *= 10;
835 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
836 let node_1_closing_signed = get_event_msg!(nodes[1], MessageSendEvent::SendClosingSigned, nodes[0].node.get_our_node_id());
837 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed);
838 let node_0_2nd_closing_signed = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
839 if timeout_step == TimeoutStep::NoTimeout {
840 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed.1.unwrap());
841 check_closed_event!(nodes[1], 1, ClosureReason::CooperativeClosure);
843 check_closed_event!(nodes[0], 1, ClosureReason::CooperativeClosure);
846 if timeout_step != TimeoutStep::NoTimeout {
847 assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
849 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
852 nodes[1].node.timer_tick_occurred();
853 nodes[1].node.timer_tick_occurred();
855 let txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
856 assert_eq!(txn.len(), 1);
857 assert_eq!(txn[0].output.len(), 2);
859 if timeout_step != TimeoutStep::NoTimeout {
860 assert!((txn[0].output[0].script_pubkey.is_v0_p2wpkh() &&
861 txn[0].output[1].script_pubkey.is_v0_p2wsh()) ||
862 (txn[0].output[1].script_pubkey.is_v0_p2wpkh() &&
863 txn[0].output[0].script_pubkey.is_v0_p2wsh()));
864 check_closed_broadcast!(nodes[1], true);
865 check_added_monitors!(nodes[1], 1);
866 check_closed_event!(nodes[1], 1, ClosureReason::ProcessingError { err: "closing_signed negotiation failed to finish within two timer ticks".to_string() });
868 assert!(txn[0].output[0].script_pubkey.is_v0_p2wpkh());
869 assert!(txn[0].output[1].script_pubkey.is_v0_p2wpkh());
871 let events = nodes[1].node.get_and_clear_pending_msg_events();
872 assert_eq!(events.len(), 1);
874 MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
875 assert_eq!(msg.contents.flags & 2, 2);
877 _ => panic!("Unexpected event"),
883 fn test_closing_signed_reinit_timeout() {
884 do_test_closing_signed_reinit_timeout(TimeoutStep::AfterShutdown);
885 do_test_closing_signed_reinit_timeout(TimeoutStep::AfterClosingSigned);
886 do_test_closing_signed_reinit_timeout(TimeoutStep::NoTimeout);
889 fn do_simple_legacy_shutdown_test(high_initiator_fee: bool) {
890 // A simpe test of the legacy shutdown fee negotiation logic.
891 let chanmon_cfgs = create_chanmon_cfgs(2);
892 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
893 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
894 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
896 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
898 if high_initiator_fee {
899 // If high_initiator_fee is set, set nodes[0]'s feerate significantly higher. This
900 // shouldn't impact the flow at all given nodes[1] will happily accept the higher fee.
901 let mut feerate_lock = chanmon_cfgs[0].fee_estimator.sat_per_kw.lock().unwrap();
905 nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id(), &nodes[1].node.get_our_node_id()).unwrap();
906 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
907 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
908 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
909 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown);
911 let mut node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
912 node_0_closing_signed.fee_range = None;
913 if high_initiator_fee {
914 assert!(node_0_closing_signed.fee_satoshis > 500);
916 assert!(node_0_closing_signed.fee_satoshis < 500);
919 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
920 let (_, mut node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
921 node_1_closing_signed.as_mut().unwrap().fee_range = None;
923 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap());
924 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
925 assert!(node_0_none.is_none());
926 check_closed_event!(nodes[0], 1, ClosureReason::CooperativeClosure);
927 check_closed_event!(nodes[1], 1, ClosureReason::CooperativeClosure);
931 fn simple_legacy_shutdown_test() {
932 do_simple_legacy_shutdown_test(false);
933 do_simple_legacy_shutdown_test(true);
937 fn simple_target_feerate_shutdown() {
938 // Simple test of target in `close_channel_with_target_feerate`.
939 let chanmon_cfgs = create_chanmon_cfgs(2);
940 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
941 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
942 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
944 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
945 let chan_id = OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id();
947 nodes[0].node.close_channel_with_feerate_and_script(&chan_id, &nodes[1].node.get_our_node_id(), Some(253 * 10), None).unwrap();
948 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
949 nodes[1].node.close_channel_with_feerate_and_script(&chan_id, &nodes[0].node.get_our_node_id(), Some(253 * 5), None).unwrap();
950 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
952 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
953 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown);
955 let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
956 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
957 let (_, node_1_closing_signed_opt) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
958 let node_1_closing_signed = node_1_closing_signed_opt.unwrap();
960 // nodes[1] was passed a target which was larger than the current channel feerate, which it
961 // should ignore in favor of the channel fee, as there is no use demanding a minimum higher
962 // than what will be paid on a force-close transaction. Note that we have to consider rounding,
963 // so only check that we're within 10 sats.
964 assert!(node_0_closing_signed.fee_range.as_ref().unwrap().min_fee_satoshis >=
965 node_1_closing_signed.fee_range.as_ref().unwrap().min_fee_satoshis * 10 - 5);
966 assert!(node_0_closing_signed.fee_range.as_ref().unwrap().min_fee_satoshis <=
967 node_1_closing_signed.fee_range.as_ref().unwrap().min_fee_satoshis * 10 + 5);
969 // Further, because nodes[0]'s target fee is larger than the `Normal` fee estimation plus our
970 // force-closure-avoidance buffer, min should equal max, and the nodes[1]-selected fee should
971 // be the nodes[0] only available fee.
972 assert_eq!(node_0_closing_signed.fee_range.as_ref().unwrap().min_fee_satoshis,
973 node_0_closing_signed.fee_range.as_ref().unwrap().max_fee_satoshis);
974 assert_eq!(node_0_closing_signed.fee_range.as_ref().unwrap().min_fee_satoshis,
975 node_0_closing_signed.fee_satoshis);
976 assert_eq!(node_0_closing_signed.fee_satoshis, node_1_closing_signed.fee_satoshis);
978 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed);
979 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
980 assert!(node_0_none.is_none());
981 check_closed_event!(nodes[0], 1, ClosureReason::CooperativeClosure);
982 check_closed_event!(nodes[1], 1, ClosureReason::CooperativeClosure);