1 //! Tests that test standing up a network of ChannelManagers, creating channels, sending
2 //! payments/messages between them, and often checking the resulting ChannelMonitors are able to
3 //! claim outputs on-chain.
5 use chain::transaction::OutPoint;
6 use chain::chaininterface::{ChainListener, ChainWatchInterface};
7 use chain::keysinterface::{KeysInterface, SpendableOutputDescriptor};
8 use chain::keysinterface;
9 use ln::channel::{COMMITMENT_TX_BASE_WEIGHT, COMMITMENT_TX_WEIGHT_PER_HTLC, BREAKDOWN_TIMEOUT};
10 use ln::channelmanager::{ChannelManager,ChannelManagerReadArgs,HTLCForwardInfo,RAACommitmentOrder, PaymentPreimage, PaymentHash};
11 use ln::channelmonitor::{ChannelMonitor, CLTV_CLAIM_BUFFER, HTLC_FAIL_TIMEOUT_BLOCKS, ManyChannelMonitor};
12 use ln::channel::{ACCEPTED_HTLC_SCRIPT_WEIGHT, OFFERED_HTLC_SCRIPT_WEIGHT};
14 use ln::router::{Route, RouteHop};
16 use ln::msgs::{ChannelMessageHandler,RoutingMessageHandler,HTLCFailChannelUpdate};
18 use util::events::{Event, EventsProvider, MessageSendEvent, MessageSendEventsProvider};
19 use util::errors::APIError;
20 use util::ser::{Writeable, ReadableArgs};
21 use util::config::UserConfig;
24 use bitcoin::util::hash::{BitcoinHash, Sha256dHash};
25 use bitcoin::util::bip143;
26 use bitcoin::util::address::Address;
27 use bitcoin::util::bip32::{ChildNumber, ExtendedPubKey, ExtendedPrivKey};
28 use bitcoin::blockdata::block::{Block, BlockHeader};
29 use bitcoin::blockdata::transaction::{Transaction, TxOut, TxIn, SigHashType};
30 use bitcoin::blockdata::script::{Builder, Script};
31 use bitcoin::blockdata::opcodes;
32 use bitcoin::blockdata::constants::genesis_block;
33 use bitcoin::network::constants::Network;
35 use bitcoin_hashes::sha256::Hash as Sha256;
36 use bitcoin_hashes::Hash;
38 use secp256k1::{Secp256k1, Message};
39 use secp256k1::key::{PublicKey,SecretKey};
41 use std::collections::{BTreeSet, HashMap, HashSet};
42 use std::default::Default;
44 use std::sync::atomic::Ordering;
45 use std::time::Instant;
48 use ln::functional_test_utils::*;
51 fn test_async_inbound_update_fee() {
52 let mut nodes = create_network(2);
53 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
54 let channel_id = chan.2;
57 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
61 // send (1) commitment_signed -.
62 // <- update_add_htlc/commitment_signed
63 // send (2) RAA (awaiting remote revoke) -.
64 // (1) commitment_signed is delivered ->
65 // .- send (3) RAA (awaiting remote revoke)
66 // (2) RAA is delivered ->
67 // .- send (4) commitment_signed
68 // <- (3) RAA is delivered
69 // send (5) commitment_signed -.
70 // <- (4) commitment_signed is delivered
72 // (5) commitment_signed is delivered ->
74 // (6) RAA is delivered ->
76 // First nodes[0] generates an update_fee
77 nodes[0].node.update_fee(channel_id, get_feerate!(nodes[0], channel_id) + 20).unwrap();
78 check_added_monitors!(nodes[0], 1);
80 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
81 assert_eq!(events_0.len(), 1);
82 let (update_msg, commitment_signed) = match events_0[0] { // (1)
83 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
84 (update_fee.as_ref(), commitment_signed)
86 _ => panic!("Unexpected event"),
89 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap();
91 // ...but before it's delivered, nodes[1] starts to send a payment back to nodes[0]...
92 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
93 nodes[1].node.send_payment(nodes[1].router.get_route(&nodes[0].node.get_our_node_id(), None, &Vec::new(), 40000, TEST_FINAL_CLTV).unwrap(), our_payment_hash).unwrap();
94 check_added_monitors!(nodes[1], 1);
97 let mut events_1 = nodes[1].node.get_and_clear_pending_msg_events();
98 assert_eq!(events_1.len(), 1);
99 SendEvent::from_event(events_1.remove(0))
101 assert_eq!(payment_event.node_id, nodes[0].node.get_our_node_id());
102 assert_eq!(payment_event.msgs.len(), 1);
104 // ...now when the messages get delivered everyone should be happy
105 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]).unwrap();
106 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg).unwrap(); // (2)
107 let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
108 // nodes[0] is awaiting nodes[1] revoke_and_ack so get_event_msg's assert(len == 1) passes
109 check_added_monitors!(nodes[0], 1);
111 // deliver(1), generate (3):
112 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap();
113 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
114 // nodes[1] is awaiting nodes[0] revoke_and_ack so get_event_msg's assert(len == 1) passes
115 check_added_monitors!(nodes[1], 1);
117 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack).unwrap(); // deliver (2)
118 let bs_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
119 assert!(bs_update.update_add_htlcs.is_empty()); // (4)
120 assert!(bs_update.update_fulfill_htlcs.is_empty()); // (4)
121 assert!(bs_update.update_fail_htlcs.is_empty()); // (4)
122 assert!(bs_update.update_fail_malformed_htlcs.is_empty()); // (4)
123 assert!(bs_update.update_fee.is_none()); // (4)
124 check_added_monitors!(nodes[1], 1);
126 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); // deliver (3)
127 let as_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
128 assert!(as_update.update_add_htlcs.is_empty()); // (5)
129 assert!(as_update.update_fulfill_htlcs.is_empty()); // (5)
130 assert!(as_update.update_fail_htlcs.is_empty()); // (5)
131 assert!(as_update.update_fail_malformed_htlcs.is_empty()); // (5)
132 assert!(as_update.update_fee.is_none()); // (5)
133 check_added_monitors!(nodes[0], 1);
135 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_update.commitment_signed).unwrap(); // deliver (4)
136 let as_second_revoke = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
137 // only (6) so get_event_msg's assert(len == 1) passes
138 check_added_monitors!(nodes[0], 1);
140 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_update.commitment_signed).unwrap(); // deliver (5)
141 let bs_second_revoke = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
142 check_added_monitors!(nodes[1], 1);
144 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke).unwrap();
145 check_added_monitors!(nodes[0], 1);
147 let events_2 = nodes[0].node.get_and_clear_pending_events();
148 assert_eq!(events_2.len(), 1);
150 Event::PendingHTLCsForwardable {..} => {}, // If we actually processed we'd receive the payment
151 _ => panic!("Unexpected event"),
154 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_second_revoke).unwrap(); // deliver (6)
155 check_added_monitors!(nodes[1], 1);
159 fn test_update_fee_unordered_raa() {
160 // Just the intro to the previous test followed by an out-of-order RAA (which caused a
161 // crash in an earlier version of the update_fee patch)
162 let mut nodes = create_network(2);
163 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
164 let channel_id = chan.2;
167 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
169 // First nodes[0] generates an update_fee
170 nodes[0].node.update_fee(channel_id, get_feerate!(nodes[0], channel_id) + 20).unwrap();
171 check_added_monitors!(nodes[0], 1);
173 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
174 assert_eq!(events_0.len(), 1);
175 let update_msg = match events_0[0] { // (1)
176 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, .. }, .. } => {
179 _ => panic!("Unexpected event"),
182 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap();
184 // ...but before it's delivered, nodes[1] starts to send a payment back to nodes[0]...
185 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
186 nodes[1].node.send_payment(nodes[1].router.get_route(&nodes[0].node.get_our_node_id(), None, &Vec::new(), 40000, TEST_FINAL_CLTV).unwrap(), our_payment_hash).unwrap();
187 check_added_monitors!(nodes[1], 1);
189 let payment_event = {
190 let mut events_1 = nodes[1].node.get_and_clear_pending_msg_events();
191 assert_eq!(events_1.len(), 1);
192 SendEvent::from_event(events_1.remove(0))
194 assert_eq!(payment_event.node_id, nodes[0].node.get_our_node_id());
195 assert_eq!(payment_event.msgs.len(), 1);
197 // ...now when the messages get delivered everyone should be happy
198 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]).unwrap();
199 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg).unwrap(); // (2)
200 let as_revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
201 // nodes[0] is awaiting nodes[1] revoke_and_ack so get_event_msg's assert(len == 1) passes
202 check_added_monitors!(nodes[0], 1);
204 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_msg).unwrap(); // deliver (2)
205 check_added_monitors!(nodes[1], 1);
207 // We can't continue, sadly, because our (1) now has a bogus signature
211 fn test_multi_flight_update_fee() {
212 let nodes = create_network(2);
213 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
214 let channel_id = chan.2;
217 // update_fee/commitment_signed ->
218 // .- send (1) RAA and (2) commitment_signed
219 // update_fee (never committed) ->
221 // We have to manually generate the above update_fee, it is allowed by the protocol but we
222 // don't track which updates correspond to which revoke_and_ack responses so we're in
223 // AwaitingRAA mode and will not generate the update_fee yet.
224 // <- (1) RAA delivered
225 // (3) is generated and send (4) CS -.
226 // Note that A cannot generate (4) prior to (1) being delivered as it otherwise doesn't
227 // know the per_commitment_point to use for it.
228 // <- (2) commitment_signed delivered
230 // B should send no response here
231 // (4) commitment_signed delivered ->
232 // <- RAA/commitment_signed delivered
235 // First nodes[0] generates an update_fee
236 let initial_feerate = get_feerate!(nodes[0], channel_id);
237 nodes[0].node.update_fee(channel_id, initial_feerate + 20).unwrap();
238 check_added_monitors!(nodes[0], 1);
240 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
241 assert_eq!(events_0.len(), 1);
242 let (update_msg_1, commitment_signed_1) = match events_0[0] { // (1)
243 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
244 (update_fee.as_ref().unwrap(), commitment_signed)
246 _ => panic!("Unexpected event"),
249 // Deliver first update_fee/commitment_signed pair, generating (1) and (2):
250 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg_1).unwrap();
251 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed_1).unwrap();
252 let (bs_revoke_msg, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
253 check_added_monitors!(nodes[1], 1);
255 // nodes[0] is awaiting a revoke from nodes[1] before it will create a new commitment
257 nodes[0].node.update_fee(channel_id, initial_feerate + 40).unwrap();
258 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
259 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
261 // Create the (3) update_fee message that nodes[0] will generate before it does...
262 let mut update_msg_2 = msgs::UpdateFee {
263 channel_id: update_msg_1.channel_id.clone(),
264 feerate_per_kw: (initial_feerate + 30) as u32,
267 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg_2).unwrap();
269 update_msg_2.feerate_per_kw = (initial_feerate + 40) as u32;
271 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg_2).unwrap();
273 // Deliver (1), generating (3) and (4)
274 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_msg).unwrap();
275 let as_second_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
276 check_added_monitors!(nodes[0], 1);
277 assert!(as_second_update.update_add_htlcs.is_empty());
278 assert!(as_second_update.update_fulfill_htlcs.is_empty());
279 assert!(as_second_update.update_fail_htlcs.is_empty());
280 assert!(as_second_update.update_fail_malformed_htlcs.is_empty());
281 // Check that the update_fee newly generated matches what we delivered:
282 assert_eq!(as_second_update.update_fee.as_ref().unwrap().channel_id, update_msg_2.channel_id);
283 assert_eq!(as_second_update.update_fee.as_ref().unwrap().feerate_per_kw, update_msg_2.feerate_per_kw);
285 // Deliver (2) commitment_signed
286 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_commitment_signed).unwrap();
287 let as_revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
288 check_added_monitors!(nodes[0], 1);
289 // No commitment_signed so get_event_msg's assert(len == 1) passes
291 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_msg).unwrap();
292 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
293 check_added_monitors!(nodes[1], 1);
296 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_second_update.commitment_signed).unwrap();
297 let (bs_second_revoke, bs_second_commitment) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
298 check_added_monitors!(nodes[1], 1);
300 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke).unwrap();
301 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
302 check_added_monitors!(nodes[0], 1);
304 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_commitment).unwrap();
305 let as_second_revoke = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
306 // No commitment_signed so get_event_msg's assert(len == 1) passes
307 check_added_monitors!(nodes[0], 1);
309 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_second_revoke).unwrap();
310 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
311 check_added_monitors!(nodes[1], 1);
315 fn test_update_fee_vanilla() {
316 let nodes = create_network(2);
317 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
318 let channel_id = chan.2;
320 let feerate = get_feerate!(nodes[0], channel_id);
321 nodes[0].node.update_fee(channel_id, feerate+25).unwrap();
322 check_added_monitors!(nodes[0], 1);
324 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
325 assert_eq!(events_0.len(), 1);
326 let (update_msg, commitment_signed) = match events_0[0] {
327 MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => {
328 (update_fee.as_ref(), commitment_signed)
330 _ => panic!("Unexpected event"),
332 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap();
334 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap();
335 let (revoke_msg, commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
336 check_added_monitors!(nodes[1], 1);
338 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg).unwrap();
339 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
340 check_added_monitors!(nodes[0], 1);
342 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed).unwrap();
343 let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
344 // No commitment_signed so get_event_msg's assert(len == 1) passes
345 check_added_monitors!(nodes[0], 1);
347 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg).unwrap();
348 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
349 check_added_monitors!(nodes[1], 1);
353 fn test_update_fee_that_funder_cannot_afford() {
354 let nodes = create_network(2);
355 let channel_value = 1888;
356 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, channel_value, 700000);
357 let channel_id = chan.2;
360 nodes[0].node.update_fee(channel_id, feerate).unwrap();
361 check_added_monitors!(nodes[0], 1);
362 let update_msg = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
364 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg.update_fee.unwrap()).unwrap();
366 commitment_signed_dance!(nodes[1], nodes[0], update_msg.commitment_signed, false);
368 //Confirm that the new fee based on the last local commitment txn is what we expected based on the feerate of 260 set above.
369 //This value results in a fee that is exactly what the funder can afford (277 sat + 1000 sat channel reserve)
371 let chan_lock = nodes[1].node.channel_state.lock().unwrap();
372 let chan = chan_lock.by_id.get(&channel_id).unwrap();
374 //We made sure neither party's funds are below the dust limit so -2 non-HTLC txns from number of outputs
375 let num_htlcs = chan.last_local_commitment_txn[0].output.len() - 2;
376 let total_fee: u64 = feerate * (COMMITMENT_TX_BASE_WEIGHT + (num_htlcs as u64) * COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000;
377 let mut actual_fee = chan.last_local_commitment_txn[0].output.iter().fold(0, |acc, output| acc + output.value);
378 actual_fee = channel_value - actual_fee;
379 assert_eq!(total_fee, actual_fee);
382 //Add 2 to the previous fee rate to the final fee increases by 1 (with no HTLCs the fee is essentially
383 //fee_rate*(724/1000) so the increment of 1*0.724 is rounded back down)
384 nodes[0].node.update_fee(channel_id, feerate+2).unwrap();
385 check_added_monitors!(nodes[0], 1);
387 let update2_msg = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
389 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update2_msg.update_fee.unwrap()).unwrap();
391 //While producing the commitment_signed response after handling a received update_fee request the
392 //check to see if the funder, who sent the update_fee request, can afford the new fee (funder_balance >= fee+channel_reserve)
393 //Should produce and error.
394 let err = nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &update2_msg.commitment_signed).unwrap_err();
396 assert!(match err.err {
397 "Funding remote cannot afford proposed new fee" => true,
401 //clear the message we could not handle
402 nodes[1].node.get_and_clear_pending_msg_events();
406 fn test_update_fee_with_fundee_update_add_htlc() {
407 let mut nodes = create_network(2);
408 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
409 let channel_id = chan.2;
412 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
414 let feerate = get_feerate!(nodes[0], channel_id);
415 nodes[0].node.update_fee(channel_id, feerate+20).unwrap();
416 check_added_monitors!(nodes[0], 1);
418 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
419 assert_eq!(events_0.len(), 1);
420 let (update_msg, commitment_signed) = match events_0[0] {
421 MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => {
422 (update_fee.as_ref(), commitment_signed)
424 _ => panic!("Unexpected event"),
426 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap();
427 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap();
428 let (revoke_msg, commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
429 check_added_monitors!(nodes[1], 1);
431 let route = nodes[1].router.get_route(&nodes[0].node.get_our_node_id(), None, &Vec::new(), 800000, TEST_FINAL_CLTV).unwrap();
433 let (our_payment_preimage, our_payment_hash) = get_payment_preimage_hash!(nodes[1]);
435 // nothing happens since node[1] is in AwaitingRemoteRevoke
436 nodes[1].node.send_payment(route, our_payment_hash).unwrap();
438 let mut added_monitors = nodes[0].chan_monitor.added_monitors.lock().unwrap();
439 assert_eq!(added_monitors.len(), 0);
440 added_monitors.clear();
442 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
443 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
444 // node[1] has nothing to do
446 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg).unwrap();
447 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
448 check_added_monitors!(nodes[0], 1);
450 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed).unwrap();
451 let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
452 // No commitment_signed so get_event_msg's assert(len == 1) passes
453 check_added_monitors!(nodes[0], 1);
454 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg).unwrap();
455 check_added_monitors!(nodes[1], 1);
456 // AwaitingRemoteRevoke ends here
458 let commitment_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
459 assert_eq!(commitment_update.update_add_htlcs.len(), 1);
460 assert_eq!(commitment_update.update_fulfill_htlcs.len(), 0);
461 assert_eq!(commitment_update.update_fail_htlcs.len(), 0);
462 assert_eq!(commitment_update.update_fail_malformed_htlcs.len(), 0);
463 assert_eq!(commitment_update.update_fee.is_none(), true);
465 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &commitment_update.update_add_htlcs[0]).unwrap();
466 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_update.commitment_signed).unwrap();
467 check_added_monitors!(nodes[0], 1);
468 let (revoke, commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
470 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke).unwrap();
471 check_added_monitors!(nodes[1], 1);
472 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
474 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &commitment_signed).unwrap();
475 check_added_monitors!(nodes[1], 1);
476 let revoke = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
477 // No commitment_signed so get_event_msg's assert(len == 1) passes
479 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke).unwrap();
480 check_added_monitors!(nodes[0], 1);
481 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
483 expect_pending_htlcs_forwardable!(nodes[0]);
485 let events = nodes[0].node.get_and_clear_pending_events();
486 assert_eq!(events.len(), 1);
488 Event::PaymentReceived { .. } => { },
489 _ => panic!("Unexpected event"),
492 claim_payment(&nodes[1], &vec!(&nodes[0])[..], our_payment_preimage);
494 send_payment(&nodes[1], &vec!(&nodes[0])[..], 800000);
495 send_payment(&nodes[0], &vec!(&nodes[1])[..], 800000);
496 close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true);
500 fn test_update_fee() {
501 let nodes = create_network(2);
502 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
503 let channel_id = chan.2;
506 // (1) update_fee/commitment_signed ->
507 // <- (2) revoke_and_ack
508 // .- send (3) commitment_signed
509 // (4) update_fee/commitment_signed ->
510 // .- send (5) revoke_and_ack (no CS as we're awaiting a revoke)
511 // <- (3) commitment_signed delivered
512 // send (6) revoke_and_ack -.
513 // <- (5) deliver revoke_and_ack
514 // (6) deliver revoke_and_ack ->
515 // .- send (7) commitment_signed in response to (4)
516 // <- (7) deliver commitment_signed
519 // Create and deliver (1)...
520 let feerate = get_feerate!(nodes[0], channel_id);
521 nodes[0].node.update_fee(channel_id, feerate+20).unwrap();
522 check_added_monitors!(nodes[0], 1);
524 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
525 assert_eq!(events_0.len(), 1);
526 let (update_msg, commitment_signed) = match events_0[0] {
527 MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => {
528 (update_fee.as_ref(), commitment_signed)
530 _ => panic!("Unexpected event"),
532 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap();
534 // Generate (2) and (3):
535 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap();
536 let (revoke_msg, commitment_signed_0) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
537 check_added_monitors!(nodes[1], 1);
540 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg).unwrap();
541 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
542 check_added_monitors!(nodes[0], 1);
544 // Create and deliver (4)...
545 nodes[0].node.update_fee(channel_id, feerate+30).unwrap();
546 check_added_monitors!(nodes[0], 1);
547 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
548 assert_eq!(events_0.len(), 1);
549 let (update_msg, commitment_signed) = match events_0[0] {
550 MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => {
551 (update_fee.as_ref(), commitment_signed)
553 _ => panic!("Unexpected event"),
556 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap();
557 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap();
558 check_added_monitors!(nodes[1], 1);
560 let revoke_msg = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
561 // No commitment_signed so get_event_msg's assert(len == 1) passes
563 // Handle (3), creating (6):
564 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed_0).unwrap();
565 check_added_monitors!(nodes[0], 1);
566 let revoke_msg_0 = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
567 // No commitment_signed so get_event_msg's assert(len == 1) passes
570 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg).unwrap();
571 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
572 check_added_monitors!(nodes[0], 1);
574 // Deliver (6), creating (7):
575 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg_0).unwrap();
576 let commitment_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
577 assert!(commitment_update.update_add_htlcs.is_empty());
578 assert!(commitment_update.update_fulfill_htlcs.is_empty());
579 assert!(commitment_update.update_fail_htlcs.is_empty());
580 assert!(commitment_update.update_fail_malformed_htlcs.is_empty());
581 assert!(commitment_update.update_fee.is_none());
582 check_added_monitors!(nodes[1], 1);
585 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_update.commitment_signed).unwrap();
586 check_added_monitors!(nodes[0], 1);
587 let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
588 // No commitment_signed so get_event_msg's assert(len == 1) passes
590 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg).unwrap();
591 check_added_monitors!(nodes[1], 1);
592 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
594 assert_eq!(get_feerate!(nodes[0], channel_id), feerate + 30);
595 assert_eq!(get_feerate!(nodes[1], channel_id), feerate + 30);
596 close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true);
600 fn pre_funding_lock_shutdown_test() {
601 // Test sending a shutdown prior to funding_locked after funding generation
602 let nodes = create_network(2);
603 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 8000000, 0);
604 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
605 nodes[0].chain_monitor.block_connected_checked(&header, 1, &[&tx; 1], &[1; 1]);
606 nodes[1].chain_monitor.block_connected_checked(&header, 1, &[&tx; 1], &[1; 1]);
608 nodes[0].node.close_channel(&OutPoint::new(tx.txid(), 0).to_channel_id()).unwrap();
609 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
610 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown).unwrap();
611 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
612 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown).unwrap();
614 let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
615 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed).unwrap();
616 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
617 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap()).unwrap();
618 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
619 assert!(node_0_none.is_none());
621 assert!(nodes[0].node.list_channels().is_empty());
622 assert!(nodes[1].node.list_channels().is_empty());
626 fn updates_shutdown_wait() {
627 // Test sending a shutdown with outstanding updates pending
628 let mut nodes = create_network(3);
629 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
630 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
631 let route_1 = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV).unwrap();
632 let route_2 = nodes[1].router.get_route(&nodes[0].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV).unwrap();
634 let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000);
636 nodes[0].node.close_channel(&chan_1.2).unwrap();
637 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
638 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown).unwrap();
639 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
640 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown).unwrap();
642 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
643 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
645 let (_, payment_hash) = get_payment_preimage_hash!(nodes[0]);
646 if let Err(APIError::ChannelUnavailable {..}) = nodes[0].node.send_payment(route_1, payment_hash) {}
647 else { panic!("New sends should fail!") };
648 if let Err(APIError::ChannelUnavailable {..}) = nodes[1].node.send_payment(route_2, payment_hash) {}
649 else { panic!("New sends should fail!") };
651 assert!(nodes[2].node.claim_funds(our_payment_preimage));
652 check_added_monitors!(nodes[2], 1);
653 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
654 assert!(updates.update_add_htlcs.is_empty());
655 assert!(updates.update_fail_htlcs.is_empty());
656 assert!(updates.update_fail_malformed_htlcs.is_empty());
657 assert!(updates.update_fee.is_none());
658 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
659 nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]).unwrap();
660 check_added_monitors!(nodes[1], 1);
661 let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
662 commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false);
664 assert!(updates_2.update_add_htlcs.is_empty());
665 assert!(updates_2.update_fail_htlcs.is_empty());
666 assert!(updates_2.update_fail_malformed_htlcs.is_empty());
667 assert!(updates_2.update_fee.is_none());
668 assert_eq!(updates_2.update_fulfill_htlcs.len(), 1);
669 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]).unwrap();
670 commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
672 let events = nodes[0].node.get_and_clear_pending_events();
673 assert_eq!(events.len(), 1);
675 Event::PaymentSent { ref payment_preimage } => {
676 assert_eq!(our_payment_preimage, *payment_preimage);
678 _ => panic!("Unexpected event"),
681 let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
682 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed).unwrap();
683 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
684 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap()).unwrap();
685 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
686 assert!(node_0_none.is_none());
688 assert!(nodes[0].node.list_channels().is_empty());
690 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
691 nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
692 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
693 assert!(nodes[1].node.list_channels().is_empty());
694 assert!(nodes[2].node.list_channels().is_empty());
698 fn htlc_fail_async_shutdown() {
699 // Test HTLCs fail if shutdown starts even if messages are delivered out-of-order
700 let mut nodes = create_network(3);
701 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
702 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
704 let route = nodes[0].router.get_route(&nodes[2].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV).unwrap();
705 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
706 nodes[0].node.send_payment(route, our_payment_hash).unwrap();
707 check_added_monitors!(nodes[0], 1);
708 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
709 assert_eq!(updates.update_add_htlcs.len(), 1);
710 assert!(updates.update_fulfill_htlcs.is_empty());
711 assert!(updates.update_fail_htlcs.is_empty());
712 assert!(updates.update_fail_malformed_htlcs.is_empty());
713 assert!(updates.update_fee.is_none());
715 nodes[1].node.close_channel(&chan_1.2).unwrap();
716 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
717 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown).unwrap();
718 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
720 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]).unwrap();
721 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &updates.commitment_signed).unwrap();
722 check_added_monitors!(nodes[1], 1);
723 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown).unwrap();
724 commitment_signed_dance!(nodes[1], nodes[0], (), false, true, false);
726 let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
727 assert!(updates_2.update_add_htlcs.is_empty());
728 assert!(updates_2.update_fulfill_htlcs.is_empty());
729 assert_eq!(updates_2.update_fail_htlcs.len(), 1);
730 assert!(updates_2.update_fail_malformed_htlcs.is_empty());
731 assert!(updates_2.update_fee.is_none());
733 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fail_htlcs[0]).unwrap();
734 commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
736 let events = nodes[0].node.get_and_clear_pending_events();
737 assert_eq!(events.len(), 1);
739 Event::PaymentFailed { ref payment_hash, ref rejected_by_dest, .. } => {
740 assert_eq!(our_payment_hash, *payment_hash);
741 assert!(!rejected_by_dest);
743 _ => panic!("Unexpected event"),
746 let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
747 assert_eq!(msg_events.len(), 2);
748 let node_0_closing_signed = match msg_events[0] {
749 MessageSendEvent::SendClosingSigned { ref node_id, ref msg } => {
750 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
753 _ => panic!("Unexpected event"),
755 match msg_events[1] {
756 MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelUpdateMessage { ref msg }} => {
757 assert_eq!(msg.contents.short_channel_id, chan_1.0.contents.short_channel_id);
759 _ => panic!("Unexpected event"),
762 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
763 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed).unwrap();
764 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
765 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap()).unwrap();
766 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
767 assert!(node_0_none.is_none());
769 assert!(nodes[0].node.list_channels().is_empty());
771 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
772 nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
773 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
774 assert!(nodes[1].node.list_channels().is_empty());
775 assert!(nodes[2].node.list_channels().is_empty());
778 fn do_test_shutdown_rebroadcast(recv_count: u8) {
779 // Test that shutdown/closing_signed is re-sent on reconnect with a variable number of
780 // messages delivered prior to disconnect
781 let nodes = create_network(3);
782 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
783 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
785 let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000);
787 nodes[1].node.close_channel(&chan_1.2).unwrap();
788 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
790 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown).unwrap();
791 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
793 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown).unwrap();
797 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
798 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
800 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id());
801 let node_0_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
802 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id());
803 let node_1_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
805 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_reestablish).unwrap();
806 let node_1_2nd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
807 assert!(node_1_shutdown == node_1_2nd_shutdown);
809 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_reestablish).unwrap();
810 let node_0_2nd_shutdown = if recv_count > 0 {
811 let node_0_2nd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
812 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_2nd_shutdown).unwrap();
815 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
816 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_2nd_shutdown).unwrap();
817 get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id())
819 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_2nd_shutdown).unwrap();
821 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
822 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
824 assert!(nodes[2].node.claim_funds(our_payment_preimage));
825 check_added_monitors!(nodes[2], 1);
826 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
827 assert!(updates.update_add_htlcs.is_empty());
828 assert!(updates.update_fail_htlcs.is_empty());
829 assert!(updates.update_fail_malformed_htlcs.is_empty());
830 assert!(updates.update_fee.is_none());
831 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
832 nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]).unwrap();
833 check_added_monitors!(nodes[1], 1);
834 let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
835 commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false);
837 assert!(updates_2.update_add_htlcs.is_empty());
838 assert!(updates_2.update_fail_htlcs.is_empty());
839 assert!(updates_2.update_fail_malformed_htlcs.is_empty());
840 assert!(updates_2.update_fee.is_none());
841 assert_eq!(updates_2.update_fulfill_htlcs.len(), 1);
842 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]).unwrap();
843 commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
845 let events = nodes[0].node.get_and_clear_pending_events();
846 assert_eq!(events.len(), 1);
848 Event::PaymentSent { ref payment_preimage } => {
849 assert_eq!(our_payment_preimage, *payment_preimage);
851 _ => panic!("Unexpected event"),
854 let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
856 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed).unwrap();
857 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
858 assert!(node_1_closing_signed.is_some());
861 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
862 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
864 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id());
865 let node_0_2nd_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
866 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id());
868 // If all closing_signeds weren't delivered we can just resume where we left off...
869 let node_1_2nd_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
871 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_2nd_reestablish).unwrap();
872 let node_0_3rd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
873 assert!(node_0_2nd_shutdown == node_0_3rd_shutdown);
875 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_2nd_reestablish).unwrap();
876 let node_1_3rd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
877 assert!(node_1_3rd_shutdown == node_1_2nd_shutdown);
879 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_3rd_shutdown).unwrap();
880 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
882 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_3rd_shutdown).unwrap();
883 let node_0_2nd_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
884 assert!(node_0_closing_signed == node_0_2nd_closing_signed);
886 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed).unwrap();
887 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
888 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap()).unwrap();
889 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
890 assert!(node_0_none.is_none());
892 // If one node, however, received + responded with an identical closing_signed we end
893 // up erroring and node[0] will try to broadcast its own latest commitment transaction.
894 // There isn't really anything better we can do simply, but in the future we might
895 // explore storing a set of recently-closed channels that got disconnected during
896 // closing_signed and avoiding broadcasting local commitment txn for some timeout to
897 // give our counterparty enough time to (potentially) broadcast a cooperative closing
899 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
901 if let Err(msgs::HandleError{action: Some(msgs::ErrorAction::SendErrorMessage{msg}), ..}) =
902 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_2nd_reestablish) {
903 nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msg);
904 let msgs::ErrorMessage {ref channel_id, ..} = msg;
905 assert_eq!(*channel_id, chan_1.2);
906 } else { panic!("Needed SendErrorMessage close"); }
908 // get_closing_signed_broadcast usually eats the BroadcastChannelUpdate for us and
909 // checks it, but in this case nodes[0] didn't ever get a chance to receive a
910 // closing_signed so we do it ourselves
911 check_closed_broadcast!(nodes[0]);
914 assert!(nodes[0].node.list_channels().is_empty());
916 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
917 nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
918 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
919 assert!(nodes[1].node.list_channels().is_empty());
920 assert!(nodes[2].node.list_channels().is_empty());
924 fn test_shutdown_rebroadcast() {
925 do_test_shutdown_rebroadcast(0);
926 do_test_shutdown_rebroadcast(1);
927 do_test_shutdown_rebroadcast(2);
931 fn fake_network_test() {
932 // Simple test which builds a network of ChannelManagers, connects them to each other, and
933 // tests that payments get routed and transactions broadcast in semi-reasonable ways.
934 let nodes = create_network(4);
936 // Create some initial channels
937 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
938 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
939 let chan_3 = create_announced_chan_between_nodes(&nodes, 2, 3);
941 // Rebalance the network a bit by relaying one payment through all the channels...
942 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000);
943 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000);
944 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000);
945 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000);
947 // Send some more payments
948 send_payment(&nodes[1], &vec!(&nodes[2], &nodes[3])[..], 1000000);
949 send_payment(&nodes[3], &vec!(&nodes[2], &nodes[1], &nodes[0])[..], 1000000);
950 send_payment(&nodes[3], &vec!(&nodes[2], &nodes[1])[..], 1000000);
952 // Test failure packets
953 let payment_hash_1 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 1000000).1;
954 fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], payment_hash_1);
956 // Add a new channel that skips 3
957 let chan_4 = create_announced_chan_between_nodes(&nodes, 1, 3);
959 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 1000000);
960 send_payment(&nodes[2], &vec!(&nodes[3])[..], 1000000);
961 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000);
962 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000);
963 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000);
964 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000);
965 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000);
967 // Do some rebalance loop payments, simultaneously
968 let mut hops = Vec::with_capacity(3);
970 pubkey: nodes[2].node.get_our_node_id(),
971 short_channel_id: chan_2.0.contents.short_channel_id,
973 cltv_expiry_delta: chan_3.0.contents.cltv_expiry_delta as u32
976 pubkey: nodes[3].node.get_our_node_id(),
977 short_channel_id: chan_3.0.contents.short_channel_id,
979 cltv_expiry_delta: chan_4.1.contents.cltv_expiry_delta as u32
982 pubkey: nodes[1].node.get_our_node_id(),
983 short_channel_id: chan_4.0.contents.short_channel_id,
985 cltv_expiry_delta: TEST_FINAL_CLTV,
987 hops[1].fee_msat = chan_4.1.contents.fee_base_msat as u64 + chan_4.1.contents.fee_proportional_millionths as u64 * hops[2].fee_msat as u64 / 1000000;
988 hops[0].fee_msat = chan_3.0.contents.fee_base_msat as u64 + chan_3.0.contents.fee_proportional_millionths as u64 * hops[1].fee_msat as u64 / 1000000;
989 let payment_preimage_1 = send_along_route(&nodes[1], Route { hops }, &vec!(&nodes[2], &nodes[3], &nodes[1])[..], 1000000).0;
991 let mut hops = Vec::with_capacity(3);
993 pubkey: nodes[3].node.get_our_node_id(),
994 short_channel_id: chan_4.0.contents.short_channel_id,
996 cltv_expiry_delta: chan_3.1.contents.cltv_expiry_delta as u32
999 pubkey: nodes[2].node.get_our_node_id(),
1000 short_channel_id: chan_3.0.contents.short_channel_id,
1002 cltv_expiry_delta: chan_2.1.contents.cltv_expiry_delta as u32
1004 hops.push(RouteHop {
1005 pubkey: nodes[1].node.get_our_node_id(),
1006 short_channel_id: chan_2.0.contents.short_channel_id,
1008 cltv_expiry_delta: TEST_FINAL_CLTV,
1010 hops[1].fee_msat = chan_2.1.contents.fee_base_msat as u64 + chan_2.1.contents.fee_proportional_millionths as u64 * hops[2].fee_msat as u64 / 1000000;
1011 hops[0].fee_msat = chan_3.1.contents.fee_base_msat as u64 + chan_3.1.contents.fee_proportional_millionths as u64 * hops[1].fee_msat as u64 / 1000000;
1012 let payment_hash_2 = send_along_route(&nodes[1], Route { hops }, &vec!(&nodes[3], &nodes[2], &nodes[1])[..], 1000000).1;
1014 // Claim the rebalances...
1015 fail_payment(&nodes[1], &vec!(&nodes[3], &nodes[2], &nodes[1])[..], payment_hash_2);
1016 claim_payment(&nodes[1], &vec!(&nodes[2], &nodes[3], &nodes[1])[..], payment_preimage_1);
1018 // Add a duplicate new channel from 2 to 4
1019 let chan_5 = create_announced_chan_between_nodes(&nodes, 1, 3);
1021 // Send some payments across both channels
1022 let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0;
1023 let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0;
1024 let payment_preimage_5 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0;
1026 route_over_limit(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000);
1028 //TODO: Test that routes work again here as we've been notified that the channel is full
1030 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_3);
1031 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_4);
1032 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_5);
1034 // Close down the channels...
1035 close_channel(&nodes[0], &nodes[1], &chan_1.2, chan_1.3, true);
1036 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, false);
1037 close_channel(&nodes[2], &nodes[3], &chan_3.2, chan_3.3, true);
1038 close_channel(&nodes[1], &nodes[3], &chan_4.2, chan_4.3, false);
1039 close_channel(&nodes[1], &nodes[3], &chan_5.2, chan_5.3, false);
1043 fn duplicate_htlc_test() {
1044 // Test that we accept duplicate payment_hash HTLCs across the network and that
1045 // claiming/failing them are all separate and don't effect each other
1046 let mut nodes = create_network(6);
1048 // Create some initial channels to route via 3 to 4/5 from 0/1/2
1049 create_announced_chan_between_nodes(&nodes, 0, 3);
1050 create_announced_chan_between_nodes(&nodes, 1, 3);
1051 create_announced_chan_between_nodes(&nodes, 2, 3);
1052 create_announced_chan_between_nodes(&nodes, 3, 4);
1053 create_announced_chan_between_nodes(&nodes, 3, 5);
1055 let (payment_preimage, payment_hash) = route_payment(&nodes[0], &vec!(&nodes[3], &nodes[4])[..], 1000000);
1057 *nodes[0].network_payment_count.borrow_mut() -= 1;
1058 assert_eq!(route_payment(&nodes[1], &vec!(&nodes[3])[..], 1000000).0, payment_preimage);
1060 *nodes[0].network_payment_count.borrow_mut() -= 1;
1061 assert_eq!(route_payment(&nodes[2], &vec!(&nodes[3], &nodes[5])[..], 1000000).0, payment_preimage);
1063 claim_payment(&nodes[0], &vec!(&nodes[3], &nodes[4])[..], payment_preimage);
1064 fail_payment(&nodes[2], &vec!(&nodes[3], &nodes[5])[..], payment_hash);
1065 claim_payment(&nodes[1], &vec!(&nodes[3])[..], payment_preimage);
1068 fn do_channel_reserve_test(test_recv: bool) {
1070 use std::sync::atomic::Ordering;
1071 use ln::msgs::HandleError;
1073 let mut nodes = create_network(3);
1074 let chan_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1900, 1001);
1075 let chan_2 = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 1900, 1001);
1077 let mut stat01 = get_channel_value_stat!(nodes[0], chan_1.2);
1078 let mut stat11 = get_channel_value_stat!(nodes[1], chan_1.2);
1080 let mut stat12 = get_channel_value_stat!(nodes[1], chan_2.2);
1081 let mut stat22 = get_channel_value_stat!(nodes[2], chan_2.2);
1083 macro_rules! get_route_and_payment_hash {
1084 ($recv_value: expr) => {{
1085 let route = nodes[0].router.get_route(&nodes.last().unwrap().node.get_our_node_id(), None, &Vec::new(), $recv_value, TEST_FINAL_CLTV).unwrap();
1086 let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[0]);
1087 (route, payment_hash, payment_preimage)
1091 macro_rules! expect_forward {
1093 let mut events = $node.node.get_and_clear_pending_msg_events();
1094 assert_eq!(events.len(), 1);
1095 check_added_monitors!($node, 1);
1096 let payment_event = SendEvent::from_event(events.remove(0));
1101 let feemsat = 239; // somehow we know?
1102 let total_fee_msat = (nodes.len() - 2) as u64 * 239;
1104 let recv_value_0 = stat01.their_max_htlc_value_in_flight_msat - total_fee_msat;
1106 // attempt to send amt_msat > their_max_htlc_value_in_flight_msat
1108 let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_0 + 1);
1109 assert!(route.hops.iter().rev().skip(1).all(|h| h.fee_msat == feemsat));
1110 let err = nodes[0].node.send_payment(route, our_payment_hash).err().unwrap();
1112 APIError::ChannelUnavailable{err} => assert_eq!(err, "Cannot send value that would put us over our max HTLC value in flight"),
1113 _ => panic!("Unknown error variants"),
1117 let mut htlc_id = 0;
1118 // channel reserve is bigger than their_max_htlc_value_in_flight_msat so loop to deplete
1119 // nodes[0]'s wealth
1121 let amt_msat = recv_value_0 + total_fee_msat;
1122 if stat01.value_to_self_msat - amt_msat < stat01.channel_reserve_msat {
1125 send_payment(&nodes[0], &vec![&nodes[1], &nodes[2]][..], recv_value_0);
1128 let (stat01_, stat11_, stat12_, stat22_) = (
1129 get_channel_value_stat!(nodes[0], chan_1.2),
1130 get_channel_value_stat!(nodes[1], chan_1.2),
1131 get_channel_value_stat!(nodes[1], chan_2.2),
1132 get_channel_value_stat!(nodes[2], chan_2.2),
1135 assert_eq!(stat01_.value_to_self_msat, stat01.value_to_self_msat - amt_msat);
1136 assert_eq!(stat11_.value_to_self_msat, stat11.value_to_self_msat + amt_msat);
1137 assert_eq!(stat12_.value_to_self_msat, stat12.value_to_self_msat - (amt_msat - feemsat));
1138 assert_eq!(stat22_.value_to_self_msat, stat22.value_to_self_msat + (amt_msat - feemsat));
1139 stat01 = stat01_; stat11 = stat11_; stat12 = stat12_; stat22 = stat22_;
1143 let recv_value = stat01.value_to_self_msat - stat01.channel_reserve_msat - total_fee_msat;
1144 // attempt to get channel_reserve violation
1145 let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value + 1);
1146 let err = nodes[0].node.send_payment(route.clone(), our_payment_hash).err().unwrap();
1148 APIError::ChannelUnavailable{err} => assert_eq!(err, "Cannot send value that would put us over our reserve value"),
1149 _ => panic!("Unknown error variants"),
1153 // adding pending output
1154 let recv_value_1 = (stat01.value_to_self_msat - stat01.channel_reserve_msat - total_fee_msat)/2;
1155 let amt_msat_1 = recv_value_1 + total_fee_msat;
1157 let (route_1, our_payment_hash_1, our_payment_preimage_1) = get_route_and_payment_hash!(recv_value_1);
1158 let payment_event_1 = {
1159 nodes[0].node.send_payment(route_1, our_payment_hash_1).unwrap();
1160 check_added_monitors!(nodes[0], 1);
1162 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1163 assert_eq!(events.len(), 1);
1164 SendEvent::from_event(events.remove(0))
1166 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event_1.msgs[0]).unwrap();
1168 // channel reserve test with htlc pending output > 0
1169 let recv_value_2 = stat01.value_to_self_msat - amt_msat_1 - stat01.channel_reserve_msat - total_fee_msat;
1171 let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_2 + 1);
1172 match nodes[0].node.send_payment(route, our_payment_hash).err().unwrap() {
1173 APIError::ChannelUnavailable{err} => assert_eq!(err, "Cannot send value that would put us over our reserve value"),
1174 _ => panic!("Unknown error variants"),
1179 // test channel_reserve test on nodes[1] side
1180 let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_2 + 1);
1182 // Need to manually create update_add_htlc message to go around the channel reserve check in send_htlc()
1183 let secp_ctx = Secp256k1::new();
1184 let session_priv = SecretKey::from_slice(&{
1185 let mut session_key = [0; 32];
1186 rng::fill_bytes(&mut session_key);
1188 }).expect("RNG is bad!");
1190 let cur_height = nodes[0].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
1191 let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route, &session_priv).unwrap();
1192 let (onion_payloads, htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route, cur_height).unwrap();
1193 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, &our_payment_hash);
1194 let msg = msgs::UpdateAddHTLC {
1195 channel_id: chan_1.2,
1197 amount_msat: htlc_msat,
1198 payment_hash: our_payment_hash,
1199 cltv_expiry: htlc_cltv,
1200 onion_routing_packet: onion_packet,
1204 let err = nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg).err().unwrap();
1206 HandleError{err, .. } => assert_eq!(err, "Remote HTLC add would put them over their reserve value"),
1208 // If we send a garbage message, the channel should get closed, making the rest of this test case fail.
1209 assert_eq!(nodes[1].node.list_channels().len(), 1);
1210 assert_eq!(nodes[1].node.list_channels().len(), 1);
1211 check_closed_broadcast!(nodes[1]);
1216 // split the rest to test holding cell
1217 let recv_value_21 = recv_value_2/2;
1218 let recv_value_22 = recv_value_2 - recv_value_21 - total_fee_msat;
1220 let stat = get_channel_value_stat!(nodes[0], chan_1.2);
1221 assert_eq!(stat.value_to_self_msat - (stat.pending_outbound_htlcs_amount_msat + recv_value_21 + recv_value_22 + total_fee_msat + total_fee_msat), stat.channel_reserve_msat);
1224 // now see if they go through on both sides
1225 let (route_21, our_payment_hash_21, our_payment_preimage_21) = get_route_and_payment_hash!(recv_value_21);
1226 // but this will stuck in the holding cell
1227 nodes[0].node.send_payment(route_21, our_payment_hash_21).unwrap();
1228 check_added_monitors!(nodes[0], 0);
1229 let events = nodes[0].node.get_and_clear_pending_events();
1230 assert_eq!(events.len(), 0);
1232 // test with outbound holding cell amount > 0
1234 let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_22+1);
1235 match nodes[0].node.send_payment(route, our_payment_hash).err().unwrap() {
1236 APIError::ChannelUnavailable{err} => assert_eq!(err, "Cannot send value that would put us over our reserve value"),
1237 _ => panic!("Unknown error variants"),
1241 let (route_22, our_payment_hash_22, our_payment_preimage_22) = get_route_and_payment_hash!(recv_value_22);
1242 // this will also stuck in the holding cell
1243 nodes[0].node.send_payment(route_22, our_payment_hash_22).unwrap();
1244 check_added_monitors!(nodes[0], 0);
1245 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
1246 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1248 // flush the pending htlc
1249 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event_1.commitment_msg).unwrap();
1250 let (as_revoke_and_ack, as_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1251 check_added_monitors!(nodes[1], 1);
1253 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_revoke_and_ack).unwrap();
1254 check_added_monitors!(nodes[0], 1);
1255 let commitment_update_2 = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
1257 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &as_commitment_signed).unwrap();
1258 let bs_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
1259 // No commitment_signed so get_event_msg's assert(len == 1) passes
1260 check_added_monitors!(nodes[0], 1);
1262 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &bs_revoke_and_ack).unwrap();
1263 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1264 check_added_monitors!(nodes[1], 1);
1266 expect_pending_htlcs_forwardable!(nodes[1]);
1268 let ref payment_event_11 = expect_forward!(nodes[1]);
1269 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_11.msgs[0]).unwrap();
1270 commitment_signed_dance!(nodes[2], nodes[1], payment_event_11.commitment_msg, false);
1272 expect_pending_htlcs_forwardable!(nodes[2]);
1273 expect_payment_received!(nodes[2], our_payment_hash_1, recv_value_1);
1275 // flush the htlcs in the holding cell
1276 assert_eq!(commitment_update_2.update_add_htlcs.len(), 2);
1277 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &commitment_update_2.update_add_htlcs[0]).unwrap();
1278 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &commitment_update_2.update_add_htlcs[1]).unwrap();
1279 commitment_signed_dance!(nodes[1], nodes[0], &commitment_update_2.commitment_signed, false);
1280 expect_pending_htlcs_forwardable!(nodes[1]);
1282 let ref payment_event_3 = expect_forward!(nodes[1]);
1283 assert_eq!(payment_event_3.msgs.len(), 2);
1284 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_3.msgs[0]).unwrap();
1285 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_3.msgs[1]).unwrap();
1287 commitment_signed_dance!(nodes[2], nodes[1], &payment_event_3.commitment_msg, false);
1288 expect_pending_htlcs_forwardable!(nodes[2]);
1290 let events = nodes[2].node.get_and_clear_pending_events();
1291 assert_eq!(events.len(), 2);
1293 Event::PaymentReceived { ref payment_hash, amt } => {
1294 assert_eq!(our_payment_hash_21, *payment_hash);
1295 assert_eq!(recv_value_21, amt);
1297 _ => panic!("Unexpected event"),
1300 Event::PaymentReceived { ref payment_hash, amt } => {
1301 assert_eq!(our_payment_hash_22, *payment_hash);
1302 assert_eq!(recv_value_22, amt);
1304 _ => panic!("Unexpected event"),
1307 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_1);
1308 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_21);
1309 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_22);
1311 let expected_value_to_self = stat01.value_to_self_msat - (recv_value_1 + total_fee_msat) - (recv_value_21 + total_fee_msat) - (recv_value_22 + total_fee_msat);
1312 let stat0 = get_channel_value_stat!(nodes[0], chan_1.2);
1313 assert_eq!(stat0.value_to_self_msat, expected_value_to_self);
1314 assert_eq!(stat0.value_to_self_msat, stat0.channel_reserve_msat);
1316 let stat2 = get_channel_value_stat!(nodes[2], chan_2.2);
1317 assert_eq!(stat2.value_to_self_msat, stat22.value_to_self_msat + recv_value_1 + recv_value_21 + recv_value_22);
1321 fn channel_reserve_test() {
1322 do_channel_reserve_test(false);
1323 do_channel_reserve_test(true);
1327 fn channel_monitor_network_test() {
1328 // Simple test which builds a network of ChannelManagers, connects them to each other, and
1329 // tests that ChannelMonitor is able to recover from various states.
1330 let nodes = create_network(5);
1332 // Create some initial channels
1333 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
1334 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
1335 let chan_3 = create_announced_chan_between_nodes(&nodes, 2, 3);
1336 let chan_4 = create_announced_chan_between_nodes(&nodes, 3, 4);
1338 // Rebalance the network a bit by relaying one payment through all the channels...
1339 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000);
1340 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000);
1341 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000);
1342 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000);
1344 // Simple case with no pending HTLCs:
1345 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), true);
1347 let mut node_txn = test_txn_broadcast(&nodes[1], &chan_1, None, HTLCType::NONE);
1348 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
1349 nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn.drain(..).next().unwrap()] }, 1);
1350 test_txn_broadcast(&nodes[0], &chan_1, None, HTLCType::NONE);
1352 get_announce_close_broadcast_events(&nodes, 0, 1);
1353 assert_eq!(nodes[0].node.list_channels().len(), 0);
1354 assert_eq!(nodes[1].node.list_channels().len(), 1);
1356 // One pending HTLC is discarded by the force-close:
1357 let payment_preimage_1 = route_payment(&nodes[1], &vec!(&nodes[2], &nodes[3])[..], 3000000).0;
1359 // Simple case of one pending HTLC to HTLC-Timeout
1360 nodes[1].node.peer_disconnected(&nodes[2].node.get_our_node_id(), true);
1362 let mut node_txn = test_txn_broadcast(&nodes[1], &chan_2, None, HTLCType::TIMEOUT);
1363 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
1364 nodes[2].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn.drain(..).next().unwrap()] }, 1);
1365 test_txn_broadcast(&nodes[2], &chan_2, None, HTLCType::NONE);
1367 get_announce_close_broadcast_events(&nodes, 1, 2);
1368 assert_eq!(nodes[1].node.list_channels().len(), 0);
1369 assert_eq!(nodes[2].node.list_channels().len(), 1);
1371 macro_rules! claim_funds {
1372 ($node: expr, $prev_node: expr, $preimage: expr) => {
1374 assert!($node.node.claim_funds($preimage));
1375 check_added_monitors!($node, 1);
1377 let events = $node.node.get_and_clear_pending_msg_events();
1378 assert_eq!(events.len(), 1);
1380 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, .. } } => {
1381 assert!(update_add_htlcs.is_empty());
1382 assert!(update_fail_htlcs.is_empty());
1383 assert_eq!(*node_id, $prev_node.node.get_our_node_id());
1385 _ => panic!("Unexpected event"),
1391 // nodes[3] gets the preimage, but nodes[2] already disconnected, resulting in a nodes[2]
1392 // HTLC-Timeout and a nodes[3] claim against it (+ its own announces)
1393 nodes[2].node.peer_disconnected(&nodes[3].node.get_our_node_id(), true);
1395 let node_txn = test_txn_broadcast(&nodes[2], &chan_3, None, HTLCType::TIMEOUT);
1397 // Claim the payment on nodes[3], giving it knowledge of the preimage
1398 claim_funds!(nodes[3], nodes[2], payment_preimage_1);
1400 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
1401 nodes[3].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn[0].clone()] }, 1);
1403 check_preimage_claim(&nodes[3], &node_txn);
1405 get_announce_close_broadcast_events(&nodes, 2, 3);
1406 assert_eq!(nodes[2].node.list_channels().len(), 0);
1407 assert_eq!(nodes[3].node.list_channels().len(), 1);
1409 { // Cheat and reset nodes[4]'s height to 1
1410 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
1411 nodes[4].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![] }, 1);
1414 assert_eq!(nodes[3].node.latest_block_height.load(Ordering::Acquire), 1);
1415 assert_eq!(nodes[4].node.latest_block_height.load(Ordering::Acquire), 1);
1416 // One pending HTLC to time out:
1417 let payment_preimage_2 = route_payment(&nodes[3], &vec!(&nodes[4])[..], 3000000).0;
1418 // CLTV expires at TEST_FINAL_CLTV + 1 (current height) + 1 (added in send_payment for
1422 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
1423 nodes[3].chain_monitor.block_connected_checked(&header, 2, &Vec::new()[..], &[0; 0]);
1424 for i in 3..TEST_FINAL_CLTV + 2 + HTLC_FAIL_TIMEOUT_BLOCKS + 1 {
1425 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
1426 nodes[3].chain_monitor.block_connected_checked(&header, i, &Vec::new()[..], &[0; 0]);
1429 let node_txn = test_txn_broadcast(&nodes[3], &chan_4, None, HTLCType::TIMEOUT);
1431 // Claim the payment on nodes[4], giving it knowledge of the preimage
1432 claim_funds!(nodes[4], nodes[3], payment_preimage_2);
1434 header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
1435 nodes[4].chain_monitor.block_connected_checked(&header, 2, &Vec::new()[..], &[0; 0]);
1436 for i in 3..TEST_FINAL_CLTV + 2 - CLTV_CLAIM_BUFFER + 1 {
1437 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
1438 nodes[4].chain_monitor.block_connected_checked(&header, i, &Vec::new()[..], &[0; 0]);
1441 test_txn_broadcast(&nodes[4], &chan_4, None, HTLCType::SUCCESS);
1443 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
1444 nodes[4].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn[0].clone()] }, TEST_FINAL_CLTV - 5);
1446 check_preimage_claim(&nodes[4], &node_txn);
1448 get_announce_close_broadcast_events(&nodes, 3, 4);
1449 assert_eq!(nodes[3].node.list_channels().len(), 0);
1450 assert_eq!(nodes[4].node.list_channels().len(), 0);
1454 fn test_justice_tx() {
1455 // Test justice txn built on revoked HTLC-Success tx, against both sides
1457 let nodes = create_network(2);
1458 // Create some new channels:
1459 let chan_5 = create_announced_chan_between_nodes(&nodes, 0, 1);
1461 // A pending HTLC which will be revoked:
1462 let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
1463 // Get the will-be-revoked local txn from nodes[0]
1464 let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.iter().next().unwrap().1.last_local_commitment_txn.clone();
1465 assert_eq!(revoked_local_txn.len(), 2); // First commitment tx, then HTLC tx
1466 assert_eq!(revoked_local_txn[0].input.len(), 1);
1467 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_5.3.txid());
1468 assert_eq!(revoked_local_txn[0].output.len(), 2); // Only HTLC and output back to 0 are present
1469 assert_eq!(revoked_local_txn[1].input.len(), 1);
1470 assert_eq!(revoked_local_txn[1].input[0].previous_output.txid, revoked_local_txn[0].txid());
1471 assert_eq!(revoked_local_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); // HTLC-Timeout
1472 // Revoke the old state
1473 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_3);
1476 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
1477 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
1479 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
1480 assert_eq!(node_txn.len(), 3);
1481 assert_eq!(node_txn.pop().unwrap(), node_txn[0]); // An outpoint registration will result in a 2nd block_connected
1482 assert_eq!(node_txn[0].input.len(), 2); // We should claim the revoked output and the HTLC output
1484 check_spends!(node_txn[0], revoked_local_txn[0].clone());
1485 node_txn.swap_remove(0);
1487 test_txn_broadcast(&nodes[1], &chan_5, None, HTLCType::NONE);
1489 nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
1490 let node_txn = test_txn_broadcast(&nodes[0], &chan_5, Some(revoked_local_txn[0].clone()), HTLCType::TIMEOUT);
1491 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
1492 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn[1].clone()] }, 1);
1493 test_revoked_htlc_claim_txn_broadcast(&nodes[1], node_txn[1].clone());
1495 get_announce_close_broadcast_events(&nodes, 0, 1);
1497 assert_eq!(nodes[0].node.list_channels().len(), 0);
1498 assert_eq!(nodes[1].node.list_channels().len(), 0);
1500 // We test justice_tx build by A on B's revoked HTLC-Success tx
1501 // Create some new channels:
1502 let chan_6 = create_announced_chan_between_nodes(&nodes, 0, 1);
1504 // A pending HTLC which will be revoked:
1505 let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
1506 // Get the will-be-revoked local txn from B
1507 let revoked_local_txn = nodes[1].node.channel_state.lock().unwrap().by_id.iter().next().unwrap().1.last_local_commitment_txn.clone();
1508 assert_eq!(revoked_local_txn.len(), 1); // Only commitment tx
1509 assert_eq!(revoked_local_txn[0].input.len(), 1);
1510 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_6.3.txid());
1511 assert_eq!(revoked_local_txn[0].output.len(), 2); // Only HTLC and output back to A are present
1512 // Revoke the old state
1513 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_4);
1515 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
1516 nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
1518 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
1519 assert_eq!(node_txn.len(), 3);
1520 assert_eq!(node_txn.pop().unwrap(), node_txn[0]); // An outpoint registration will result in a 2nd block_connected
1521 assert_eq!(node_txn[0].input.len(), 1); // We claim the received HTLC output
1523 check_spends!(node_txn[0], revoked_local_txn[0].clone());
1524 node_txn.swap_remove(0);
1526 test_txn_broadcast(&nodes[0], &chan_6, None, HTLCType::NONE);
1528 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
1529 let node_txn = test_txn_broadcast(&nodes[1], &chan_6, Some(revoked_local_txn[0].clone()), HTLCType::SUCCESS);
1530 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
1531 nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn[1].clone()] }, 1);
1532 test_revoked_htlc_claim_txn_broadcast(&nodes[0], node_txn[1].clone());
1534 get_announce_close_broadcast_events(&nodes, 0, 1);
1535 assert_eq!(nodes[0].node.list_channels().len(), 0);
1536 assert_eq!(nodes[1].node.list_channels().len(), 0);
1540 fn revoked_output_claim() {
1541 // Simple test to ensure a node will claim a revoked output when a stale remote commitment
1542 // transaction is broadcast by its counterparty
1543 let nodes = create_network(2);
1544 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
1545 // node[0] is gonna to revoke an old state thus node[1] should be able to claim the revoked output
1546 let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone();
1547 assert_eq!(revoked_local_txn.len(), 1);
1548 // Only output is the full channel value back to nodes[0]:
1549 assert_eq!(revoked_local_txn[0].output.len(), 1);
1550 // Send a payment through, updating everyone's latest commitment txn
1551 send_payment(&nodes[0], &vec!(&nodes[1])[..], 5000000);
1553 // Inform nodes[1] that nodes[0] broadcast a stale tx
1554 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
1555 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
1556 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
1557 assert_eq!(node_txn.len(), 3); // nodes[1] will broadcast justice tx twice, and its own local state once
1559 assert_eq!(node_txn[0], node_txn[2]);
1561 check_spends!(node_txn[0], revoked_local_txn[0].clone());
1562 check_spends!(node_txn[1], chan_1.3.clone());
1564 // Inform nodes[0] that a watchtower cheated on its behalf, so it will force-close the chan
1565 nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
1566 get_announce_close_broadcast_events(&nodes, 0, 1);
1570 fn claim_htlc_outputs_shared_tx() {
1571 // Node revoked old state, htlcs haven't time out yet, claim them in shared justice tx
1572 let nodes = create_network(2);
1574 // Create some new channel:
1575 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
1577 // Rebalance the network to generate htlc in the two directions
1578 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
1579 // node[0] is gonna to revoke an old state thus node[1] should be able to claim both offered/received HTLC outputs on top of commitment tx
1580 let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
1581 let (_payment_preimage_2, payment_hash_2) = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3000000);
1583 // Get the will-be-revoked local txn from node[0]
1584 let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone();
1585 assert_eq!(revoked_local_txn.len(), 2); // commitment tx + 1 HTLC-Timeout tx
1586 assert_eq!(revoked_local_txn[0].input.len(), 1);
1587 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
1588 assert_eq!(revoked_local_txn[1].input.len(), 1);
1589 assert_eq!(revoked_local_txn[1].input[0].previous_output.txid, revoked_local_txn[0].txid());
1590 assert_eq!(revoked_local_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); // HTLC-Timeout
1591 check_spends!(revoked_local_txn[1], revoked_local_txn[0].clone());
1593 //Revoke the old state
1594 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_1);
1597 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
1598 nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
1599 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
1601 let events = nodes[1].node.get_and_clear_pending_events();
1602 assert_eq!(events.len(), 1);
1604 Event::PaymentFailed { payment_hash, .. } => {
1605 assert_eq!(payment_hash, payment_hash_2);
1607 _ => panic!("Unexpected event"),
1610 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
1611 assert_eq!(node_txn.len(), 4);
1613 assert_eq!(node_txn[0].input.len(), 3); // Claim the revoked output + both revoked HTLC outputs
1614 check_spends!(node_txn[0], revoked_local_txn[0].clone());
1616 assert_eq!(node_txn[0], node_txn[3]); // justice tx is duplicated due to block re-scanning
1618 let mut witness_lens = BTreeSet::new();
1619 witness_lens.insert(node_txn[0].input[0].witness.last().unwrap().len());
1620 witness_lens.insert(node_txn[0].input[1].witness.last().unwrap().len());
1621 witness_lens.insert(node_txn[0].input[2].witness.last().unwrap().len());
1622 assert_eq!(witness_lens.len(), 3);
1623 assert_eq!(*witness_lens.iter().skip(0).next().unwrap(), 77); // revoked to_local
1624 assert_eq!(*witness_lens.iter().skip(1).next().unwrap(), OFFERED_HTLC_SCRIPT_WEIGHT); // revoked offered HTLC
1625 assert_eq!(*witness_lens.iter().skip(2).next().unwrap(), ACCEPTED_HTLC_SCRIPT_WEIGHT); // revoked received HTLC
1627 // Next nodes[1] broadcasts its current local tx state:
1628 assert_eq!(node_txn[1].input.len(), 1);
1629 assert_eq!(node_txn[1].input[0].previous_output.txid, chan_1.3.txid()); //Spending funding tx unique txouput, tx broadcasted by ChannelManager
1631 assert_eq!(node_txn[2].input.len(), 1);
1632 let witness_script = node_txn[2].clone().input[0].witness.pop().unwrap();
1633 assert_eq!(witness_script.len(), OFFERED_HTLC_SCRIPT_WEIGHT); //Spending an offered htlc output
1634 assert_eq!(node_txn[2].input[0].previous_output.txid, node_txn[1].txid());
1635 assert_ne!(node_txn[2].input[0].previous_output.txid, node_txn[0].input[0].previous_output.txid);
1636 assert_ne!(node_txn[2].input[0].previous_output.txid, node_txn[0].input[1].previous_output.txid);
1638 get_announce_close_broadcast_events(&nodes, 0, 1);
1639 assert_eq!(nodes[0].node.list_channels().len(), 0);
1640 assert_eq!(nodes[1].node.list_channels().len(), 0);
1644 fn claim_htlc_outputs_single_tx() {
1645 // Node revoked old state, htlcs have timed out, claim each of them in separated justice tx
1646 let nodes = create_network(2);
1648 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
1650 // Rebalance the network to generate htlc in the two directions
1651 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
1652 // node[0] is gonna to revoke an old state thus node[1] should be able to claim both offered/received HTLC outputs on top of commitment tx, but this
1653 // time as two different claim transactions as we're gonna to timeout htlc with given a high current height
1654 let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
1655 let (_payment_preimage_2, payment_hash_2) = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3000000);
1657 // Get the will-be-revoked local txn from node[0]
1658 let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone();
1660 //Revoke the old state
1661 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_1);
1664 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
1665 nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 200);
1666 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 200);
1668 let events = nodes[1].node.get_and_clear_pending_events();
1669 assert_eq!(events.len(), 1);
1671 Event::PaymentFailed { payment_hash, .. } => {
1672 assert_eq!(payment_hash, payment_hash_2);
1674 _ => panic!("Unexpected event"),
1677 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
1678 assert_eq!(node_txn.len(), 12); // ChannelManager : 2, ChannelMontitor: 8 (1 standard revoked output, 2 revocation htlc tx, 1 local commitment tx + 1 htlc timeout tx) * 2 (block-rescan)
1680 assert_eq!(node_txn[0], node_txn[7]);
1681 assert_eq!(node_txn[1], node_txn[8]);
1682 assert_eq!(node_txn[2], node_txn[9]);
1683 assert_eq!(node_txn[3], node_txn[10]);
1684 assert_eq!(node_txn[4], node_txn[11]);
1685 assert_eq!(node_txn[3], node_txn[5]); //local commitment tx + htlc timeout tx broadcated by ChannelManger
1686 assert_eq!(node_txn[4], node_txn[6]);
1688 assert_eq!(node_txn[0].input.len(), 1);
1689 assert_eq!(node_txn[1].input.len(), 1);
1690 assert_eq!(node_txn[2].input.len(), 1);
1692 let mut revoked_tx_map = HashMap::new();
1693 revoked_tx_map.insert(revoked_local_txn[0].txid(), revoked_local_txn[0].clone());
1694 node_txn[0].verify(&revoked_tx_map).unwrap();
1695 node_txn[1].verify(&revoked_tx_map).unwrap();
1696 node_txn[2].verify(&revoked_tx_map).unwrap();
1698 let mut witness_lens = BTreeSet::new();
1699 witness_lens.insert(node_txn[0].input[0].witness.last().unwrap().len());
1700 witness_lens.insert(node_txn[1].input[0].witness.last().unwrap().len());
1701 witness_lens.insert(node_txn[2].input[0].witness.last().unwrap().len());
1702 assert_eq!(witness_lens.len(), 3);
1703 assert_eq!(*witness_lens.iter().skip(0).next().unwrap(), 77); // revoked to_local
1704 assert_eq!(*witness_lens.iter().skip(1).next().unwrap(), OFFERED_HTLC_SCRIPT_WEIGHT); // revoked offered HTLC
1705 assert_eq!(*witness_lens.iter().skip(2).next().unwrap(), ACCEPTED_HTLC_SCRIPT_WEIGHT); // revoked received HTLC
1707 assert_eq!(node_txn[3].input.len(), 1);
1708 check_spends!(node_txn[3], chan_1.3.clone());
1710 assert_eq!(node_txn[4].input.len(), 1);
1711 let witness_script = node_txn[4].input[0].witness.last().unwrap();
1712 assert_eq!(witness_script.len(), OFFERED_HTLC_SCRIPT_WEIGHT); //Spending an offered htlc output
1713 assert_eq!(node_txn[4].input[0].previous_output.txid, node_txn[3].txid());
1714 assert_ne!(node_txn[4].input[0].previous_output.txid, node_txn[0].input[0].previous_output.txid);
1715 assert_ne!(node_txn[4].input[0].previous_output.txid, node_txn[1].input[0].previous_output.txid);
1717 get_announce_close_broadcast_events(&nodes, 0, 1);
1718 assert_eq!(nodes[0].node.list_channels().len(), 0);
1719 assert_eq!(nodes[1].node.list_channels().len(), 0);
1723 fn test_htlc_on_chain_success() {
1724 // Test that in case of an unilateral close onchain, we detect the state of output thanks to
1725 // ChainWatchInterface and pass the preimage backward accordingly. So here we test that ChannelManager is
1726 // broadcasting the right event to other nodes in payment path.
1727 // We test with two HTLCs simultaneously as that was not handled correctly in the past.
1728 // A --------------------> B ----------------------> C (preimage)
1729 // First, C should claim the HTLC outputs via HTLC-Success when its own latest local
1730 // commitment transaction was broadcast.
1731 // Then, B should learn the preimage from said transactions, attempting to claim backwards
1733 // B should be able to claim via preimage if A then broadcasts its local tx.
1734 // Finally, when A sees B's latest local commitment transaction it should be able to claim
1735 // the HTLC outputs via the preimage it learned (which, once confirmed should generate a
1736 // PaymentSent event).
1738 let nodes = create_network(3);
1740 // Create some initial channels
1741 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
1742 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
1744 // Rebalance the network a bit by relaying one payment through all the channels...
1745 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000);
1746 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000);
1748 let (our_payment_preimage, _payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
1749 let (our_payment_preimage_2, _payment_hash_2) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
1750 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
1752 // Broadcast legit commitment tx from C on B's chain
1753 // Broadcast HTLC Success transation by C on received output from C's commitment tx on B's chain
1754 let commitment_tx = nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().last_local_commitment_txn.clone();
1755 assert_eq!(commitment_tx.len(), 1);
1756 check_spends!(commitment_tx[0], chan_2.3.clone());
1757 nodes[2].node.claim_funds(our_payment_preimage);
1758 nodes[2].node.claim_funds(our_payment_preimage_2);
1759 check_added_monitors!(nodes[2], 2);
1760 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
1761 assert!(updates.update_add_htlcs.is_empty());
1762 assert!(updates.update_fail_htlcs.is_empty());
1763 assert!(updates.update_fail_malformed_htlcs.is_empty());
1764 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
1766 nodes[2].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1);
1767 check_closed_broadcast!(nodes[2]);
1768 let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 1 (commitment tx), ChannelMonitor : 4 (2*2 * HTLC-Success tx)
1769 assert_eq!(node_txn.len(), 5);
1770 assert_eq!(node_txn[0], node_txn[3]);
1771 assert_eq!(node_txn[1], node_txn[4]);
1772 assert_eq!(node_txn[2], commitment_tx[0]);
1773 check_spends!(node_txn[0], commitment_tx[0].clone());
1774 check_spends!(node_txn[1], commitment_tx[0].clone());
1775 assert_eq!(node_txn[0].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
1776 assert_eq!(node_txn[1].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
1777 assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
1778 assert!(node_txn[1].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
1779 assert_eq!(node_txn[0].lock_time, 0);
1780 assert_eq!(node_txn[1].lock_time, 0);
1782 // Verify that B's ChannelManager is able to extract preimage from HTLC Success tx and pass it backward
1783 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: node_txn}, 1);
1784 let events = nodes[1].node.get_and_clear_pending_msg_events();
1786 let mut added_monitors = nodes[1].chan_monitor.added_monitors.lock().unwrap();
1787 assert_eq!(added_monitors.len(), 2);
1788 assert_eq!(added_monitors[0].0.txid, chan_1.3.txid());
1789 assert_eq!(added_monitors[1].0.txid, chan_1.3.txid());
1790 added_monitors.clear();
1792 assert_eq!(events.len(), 2);
1794 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
1795 _ => panic!("Unexpected event"),
1798 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, .. } } => {
1799 assert!(update_add_htlcs.is_empty());
1800 assert!(update_fail_htlcs.is_empty());
1801 assert_eq!(update_fulfill_htlcs.len(), 1);
1802 assert!(update_fail_malformed_htlcs.is_empty());
1803 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
1805 _ => panic!("Unexpected event"),
1807 macro_rules! check_tx_local_broadcast {
1808 ($node: expr, $htlc_offered: expr, $commitment_tx: expr, $chan_tx: expr) => { {
1809 // ChannelManager : 3 (commitment tx, 2*HTLC-Timeout tx), ChannelMonitor : 2 (timeout tx) * 2 (block-rescan)
1810 let mut node_txn = $node.tx_broadcaster.txn_broadcasted.lock().unwrap();
1811 assert_eq!(node_txn.len(), 7);
1812 assert_eq!(node_txn[0], node_txn[5]);
1813 assert_eq!(node_txn[1], node_txn[6]);
1814 check_spends!(node_txn[0], $commitment_tx.clone());
1815 check_spends!(node_txn[1], $commitment_tx.clone());
1816 assert_ne!(node_txn[0].lock_time, 0);
1817 assert_ne!(node_txn[1].lock_time, 0);
1819 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
1820 assert_eq!(node_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
1821 assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
1822 assert!(node_txn[1].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
1824 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
1825 assert_eq!(node_txn[1].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
1826 assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
1827 assert!(node_txn[1].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
1829 check_spends!(node_txn[2], $chan_tx.clone());
1830 check_spends!(node_txn[3], node_txn[2].clone());
1831 check_spends!(node_txn[4], node_txn[2].clone());
1832 assert_eq!(node_txn[2].input[0].witness.last().unwrap().len(), 71);
1833 assert_eq!(node_txn[3].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
1834 assert_eq!(node_txn[4].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
1835 assert!(node_txn[3].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
1836 assert!(node_txn[4].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
1837 assert_ne!(node_txn[3].lock_time, 0);
1838 assert_ne!(node_txn[4].lock_time, 0);
1842 // nodes[1] now broadcasts its own local state as a fallback, suggesting an alternate
1843 // commitment transaction with a corresponding HTLC-Timeout transactions, as well as a
1844 // timeout-claim of the output that nodes[2] just claimed via success.
1845 check_tx_local_broadcast!(nodes[1], false, commitment_tx[0], chan_2.3);
1847 // Broadcast legit commitment tx from A on B's chain
1848 // Broadcast preimage tx by B on offered output from A commitment tx on A's chain
1849 let commitment_tx = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone();
1850 check_spends!(commitment_tx[0], chan_1.3.clone());
1851 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1);
1852 check_closed_broadcast!(nodes[1]);
1853 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 1 (commitment tx), ChannelMonitor : 1 (HTLC-Success) * 2 (block-rescan)
1854 assert_eq!(node_txn.len(), 3);
1855 assert_eq!(node_txn[0], node_txn[2]);
1856 check_spends!(node_txn[0], commitment_tx[0].clone());
1857 assert_eq!(node_txn[0].input.len(), 2);
1858 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
1859 assert_eq!(node_txn[0].input[1].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
1860 assert_eq!(node_txn[0].lock_time, 0);
1861 assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
1862 check_spends!(node_txn[1], chan_1.3.clone());
1863 assert_eq!(node_txn[1].input[0].witness.clone().last().unwrap().len(), 71);
1864 // We don't bother to check that B can claim the HTLC output on its commitment tx here as
1865 // we already checked the same situation with A.
1867 // Verify that A's ChannelManager is able to extract preimage from preimage tx and generate PaymentSent
1868 nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone(), node_txn[0].clone()] }, 1);
1869 check_closed_broadcast!(nodes[0]);
1870 let events = nodes[0].node.get_and_clear_pending_events();
1871 assert_eq!(events.len(), 2);
1872 let mut first_claimed = false;
1873 for event in events {
1875 Event::PaymentSent { payment_preimage } => {
1876 if payment_preimage == our_payment_preimage {
1877 assert!(!first_claimed);
1878 first_claimed = true;
1880 assert_eq!(payment_preimage, our_payment_preimage_2);
1883 _ => panic!("Unexpected event"),
1886 check_tx_local_broadcast!(nodes[0], true, commitment_tx[0], chan_1.3);
1890 fn test_htlc_on_chain_timeout() {
1891 // Test that in case of an unilateral close onchain, we detect the state of output thanks to
1892 // ChainWatchInterface and timeout the HTLC bacward accordingly. So here we test that ChannelManager is
1893 // broadcasting the right event to other nodes in payment path.
1894 // A ------------------> B ----------------------> C (timeout)
1895 // B's commitment tx C's commitment tx
1897 // B's HTLC timeout tx B's timeout tx
1899 let nodes = create_network(3);
1901 // Create some intial channels
1902 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
1903 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
1905 // Rebalance the network a bit by relaying one payment thorugh all the channels...
1906 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000);
1907 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000);
1909 let (_payment_preimage, payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
1910 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
1912 // Brodacast legit commitment tx from C on B's chain
1913 let commitment_tx = nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().last_local_commitment_txn.clone();
1914 check_spends!(commitment_tx[0], chan_2.3.clone());
1915 nodes[2].node.fail_htlc_backwards(&payment_hash, 0);
1916 check_added_monitors!(nodes[2], 0);
1917 expect_pending_htlcs_forwardable!(nodes[2]);
1918 check_added_monitors!(nodes[2], 1);
1920 let events = nodes[2].node.get_and_clear_pending_msg_events();
1921 assert_eq!(events.len(), 1);
1923 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, .. } } => {
1924 assert!(update_add_htlcs.is_empty());
1925 assert!(!update_fail_htlcs.is_empty());
1926 assert!(update_fulfill_htlcs.is_empty());
1927 assert!(update_fail_malformed_htlcs.is_empty());
1928 assert_eq!(nodes[1].node.get_our_node_id(), *node_id);
1930 _ => panic!("Unexpected event"),
1932 nodes[2].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1);
1933 check_closed_broadcast!(nodes[2]);
1934 let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 1 (commitment tx)
1935 assert_eq!(node_txn.len(), 1);
1936 check_spends!(node_txn[0], chan_2.3.clone());
1937 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), 71);
1939 // Broadcast timeout transaction by B on received output fron C's commitment tx on B's chain
1940 // Verify that B's ChannelManager is able to detect that HTLC is timeout by its own tx and react backward in consequence
1941 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 200);
1944 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
1945 assert_eq!(node_txn.len(), 8); // ChannelManager : 2 (commitment tx, HTLC-Timeout tx), ChannelMonitor : 6 (HTLC-Timeout tx, commitment tx, timeout tx) * 2 (block-rescan)
1946 assert_eq!(node_txn[0], node_txn[5]);
1947 assert_eq!(node_txn[1], node_txn[6]);
1948 assert_eq!(node_txn[2], node_txn[7]);
1949 check_spends!(node_txn[0], commitment_tx[0].clone());
1950 assert_eq!(node_txn[0].clone().input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
1951 check_spends!(node_txn[1], chan_2.3.clone());
1952 check_spends!(node_txn[2], node_txn[1].clone());
1953 assert_eq!(node_txn[1].clone().input[0].witness.last().unwrap().len(), 71);
1954 assert_eq!(node_txn[2].clone().input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
1955 check_spends!(node_txn[3], chan_2.3.clone());
1956 check_spends!(node_txn[4], node_txn[3].clone());
1957 assert_eq!(node_txn[3].input[0].witness.clone().last().unwrap().len(), 71);
1958 assert_eq!(node_txn[4].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
1959 timeout_tx = node_txn[0].clone();
1963 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![timeout_tx]}, 1);
1964 check_added_monitors!(nodes[1], 0);
1965 check_closed_broadcast!(nodes[1]);
1967 expect_pending_htlcs_forwardable!(nodes[1]);
1968 check_added_monitors!(nodes[1], 1);
1969 let events = nodes[1].node.get_and_clear_pending_msg_events();
1970 assert_eq!(events.len(), 1);
1972 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, .. } } => {
1973 assert!(update_add_htlcs.is_empty());
1974 assert!(!update_fail_htlcs.is_empty());
1975 assert!(update_fulfill_htlcs.is_empty());
1976 assert!(update_fail_malformed_htlcs.is_empty());
1977 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
1979 _ => panic!("Unexpected event"),
1981 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // Well... here we detect our own htlc_timeout_tx so no tx to be generated
1982 assert_eq!(node_txn.len(), 0);
1984 // Broadcast legit commitment tx from B on A's chain
1985 let commitment_tx = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone();
1986 check_spends!(commitment_tx[0], chan_1.3.clone());
1988 nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 200);
1989 check_closed_broadcast!(nodes[0]);
1990 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 2 (commitment tx, HTLC-Timeout tx), ChannelMonitor : 2 (timeout tx) * 2 block-rescan
1991 assert_eq!(node_txn.len(), 4);
1992 assert_eq!(node_txn[0], node_txn[3]);
1993 check_spends!(node_txn[0], commitment_tx[0].clone());
1994 assert_eq!(node_txn[0].clone().input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
1995 check_spends!(node_txn[1], chan_1.3.clone());
1996 check_spends!(node_txn[2], node_txn[1].clone());
1997 assert_eq!(node_txn[1].clone().input[0].witness.last().unwrap().len(), 71);
1998 assert_eq!(node_txn[2].clone().input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2002 fn test_simple_commitment_revoked_fail_backward() {
2003 // Test that in case of a revoked commitment tx, we detect the resolution of output by justice tx
2004 // and fail backward accordingly.
2006 let nodes = create_network(3);
2008 // Create some initial channels
2009 create_announced_chan_between_nodes(&nodes, 0, 1);
2010 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
2012 let (payment_preimage, _payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000);
2013 // Get the will-be-revoked local txn from nodes[2]
2014 let revoked_local_txn = nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().last_local_commitment_txn.clone();
2015 // Revoke the old state
2016 claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage);
2018 route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000);
2020 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
2021 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
2022 check_added_monitors!(nodes[1], 0);
2023 check_closed_broadcast!(nodes[1]);
2025 expect_pending_htlcs_forwardable!(nodes[1]);
2026 check_added_monitors!(nodes[1], 1);
2027 let events = nodes[1].node.get_and_clear_pending_msg_events();
2028 assert_eq!(events.len(), 1);
2030 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, ref commitment_signed, .. } } => {
2031 assert!(update_add_htlcs.is_empty());
2032 assert_eq!(update_fail_htlcs.len(), 1);
2033 assert!(update_fulfill_htlcs.is_empty());
2034 assert!(update_fail_malformed_htlcs.is_empty());
2035 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
2037 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]).unwrap();
2038 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false, true);
2040 let events = nodes[0].node.get_and_clear_pending_msg_events();
2041 assert_eq!(events.len(), 1);
2043 MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
2044 _ => panic!("Unexpected event"),
2046 let events = nodes[0].node.get_and_clear_pending_events();
2047 assert_eq!(events.len(), 1);
2049 Event::PaymentFailed { .. } => {},
2050 _ => panic!("Unexpected event"),
2053 _ => panic!("Unexpected event"),
2057 fn do_test_commitment_revoked_fail_backward_exhaustive(deliver_bs_raa: bool, use_dust: bool, no_to_remote: bool) {
2058 // Test that if our counterparty broadcasts a revoked commitment transaction we fail all
2059 // pending HTLCs on that channel backwards even if the HTLCs aren't present in our latest
2060 // commitment transaction anymore.
2061 // To do this, we have the peer which will broadcast a revoked commitment transaction send
2062 // a number of update_fail/commitment_signed updates without ever sending the RAA in
2063 // response to our commitment_signed. This is somewhat misbehavior-y, though not
2064 // technically disallowed and we should probably handle it reasonably.
2065 // Note that this is pretty exhaustive as an outbound HTLC which we haven't yet
2066 // failed/fulfilled backwards must be in at least one of the latest two remote commitment
2068 // * Once we move it out of our holding cell/add it, we will immediately include it in a
2069 // commitment_signed (implying it will be in the latest remote commitment transaction).
2070 // * Once they remove it, we will send a (the first) commitment_signed without the HTLC,
2071 // and once they revoke the previous commitment transaction (allowing us to send a new
2072 // commitment_signed) we will be free to fail/fulfill the HTLC backwards.
2073 let mut nodes = create_network(3);
2075 // Create some initial channels
2076 create_announced_chan_between_nodes(&nodes, 0, 1);
2077 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
2079 let (payment_preimage, _payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], if no_to_remote { 10_000 } else { 3_000_000 });
2080 // Get the will-be-revoked local txn from nodes[2]
2081 let revoked_local_txn = nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().last_local_commitment_txn.clone();
2082 assert_eq!(revoked_local_txn[0].output.len(), if no_to_remote { 1 } else { 2 });
2083 // Revoke the old state
2084 claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage);
2086 let value = if use_dust {
2087 // The dust limit applied to HTLC outputs considers the fee of the HTLC transaction as
2088 // well, so HTLCs at exactly the dust limit will not be included in commitment txn.
2089 nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().our_dust_limit_satoshis * 1000
2092 let (_, first_payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], value);
2093 let (_, second_payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], value);
2094 let (_, third_payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], value);
2096 assert!(nodes[2].node.fail_htlc_backwards(&first_payment_hash, 0));
2097 expect_pending_htlcs_forwardable!(nodes[2]);
2098 check_added_monitors!(nodes[2], 1);
2099 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
2100 assert!(updates.update_add_htlcs.is_empty());
2101 assert!(updates.update_fulfill_htlcs.is_empty());
2102 assert!(updates.update_fail_malformed_htlcs.is_empty());
2103 assert_eq!(updates.update_fail_htlcs.len(), 1);
2104 assert!(updates.update_fee.is_none());
2105 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]).unwrap();
2106 let bs_raa = commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false, true, false, true);
2107 // Drop the last RAA from 3 -> 2
2109 assert!(nodes[2].node.fail_htlc_backwards(&second_payment_hash, 0));
2110 expect_pending_htlcs_forwardable!(nodes[2]);
2111 check_added_monitors!(nodes[2], 1);
2112 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
2113 assert!(updates.update_add_htlcs.is_empty());
2114 assert!(updates.update_fulfill_htlcs.is_empty());
2115 assert!(updates.update_fail_malformed_htlcs.is_empty());
2116 assert_eq!(updates.update_fail_htlcs.len(), 1);
2117 assert!(updates.update_fee.is_none());
2118 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]).unwrap();
2119 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &updates.commitment_signed).unwrap();
2120 check_added_monitors!(nodes[1], 1);
2121 // Note that nodes[1] is in AwaitingRAA, so won't send a CS
2122 let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
2123 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa).unwrap();
2124 check_added_monitors!(nodes[2], 1);
2126 assert!(nodes[2].node.fail_htlc_backwards(&third_payment_hash, 0));
2127 expect_pending_htlcs_forwardable!(nodes[2]);
2128 check_added_monitors!(nodes[2], 1);
2129 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
2130 assert!(updates.update_add_htlcs.is_empty());
2131 assert!(updates.update_fulfill_htlcs.is_empty());
2132 assert!(updates.update_fail_malformed_htlcs.is_empty());
2133 assert_eq!(updates.update_fail_htlcs.len(), 1);
2134 assert!(updates.update_fee.is_none());
2135 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]).unwrap();
2136 // At this point first_payment_hash has dropped out of the latest two commitment
2137 // transactions that nodes[1] is tracking...
2138 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &updates.commitment_signed).unwrap();
2139 check_added_monitors!(nodes[1], 1);
2140 // Note that nodes[1] is (still) in AwaitingRAA, so won't send a CS
2141 let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
2142 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa).unwrap();
2143 check_added_monitors!(nodes[2], 1);
2145 // Add a fourth HTLC, this one will get sequestered away in nodes[1]'s holding cell waiting
2146 // on nodes[2]'s RAA.
2147 let route = nodes[1].router.get_route(&nodes[2].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap();
2148 let (_, fourth_payment_hash) = get_payment_preimage_hash!(nodes[0]);
2149 nodes[1].node.send_payment(route, fourth_payment_hash).unwrap();
2150 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2151 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
2152 check_added_monitors!(nodes[1], 0);
2155 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_raa).unwrap();
2156 // One monitor for the new revocation preimage, no second on as we won't generate a new
2157 // commitment transaction for nodes[0] until process_pending_htlc_forwards().
2158 check_added_monitors!(nodes[1], 1);
2159 let events = nodes[1].node.get_and_clear_pending_events();
2160 assert_eq!(events.len(), 1);
2162 Event::PendingHTLCsForwardable { .. } => { },
2163 _ => panic!("Unexpected event"),
2165 // Deliberately don't process the pending fail-back so they all fail back at once after
2166 // block connection just like the !deliver_bs_raa case
2169 let mut failed_htlcs = HashSet::new();
2170 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
2172 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
2173 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
2175 let events = nodes[1].node.get_and_clear_pending_events();
2176 assert_eq!(events.len(), if deliver_bs_raa { 1 } else { 2 });
2178 Event::PaymentFailed { ref payment_hash, .. } => {
2179 assert_eq!(*payment_hash, fourth_payment_hash);
2181 _ => panic!("Unexpected event"),
2183 if !deliver_bs_raa {
2185 Event::PendingHTLCsForwardable { .. } => { },
2186 _ => panic!("Unexpected event"),
2189 nodes[1].node.channel_state.lock().unwrap().next_forward = Instant::now();
2190 nodes[1].node.process_pending_htlc_forwards();
2191 check_added_monitors!(nodes[1], 1);
2193 let events = nodes[1].node.get_and_clear_pending_msg_events();
2194 assert_eq!(events.len(), if deliver_bs_raa { 3 } else { 2 });
2195 match events[if deliver_bs_raa { 1 } else { 0 }] {
2196 MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {},
2197 _ => panic!("Unexpected event"),
2201 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, .. } } => {
2202 assert_eq!(nodes[2].node.get_our_node_id(), *node_id);
2203 assert_eq!(update_add_htlcs.len(), 1);
2204 assert!(update_fulfill_htlcs.is_empty());
2205 assert!(update_fail_htlcs.is_empty());
2206 assert!(update_fail_malformed_htlcs.is_empty());
2208 _ => panic!("Unexpected event"),
2211 match events[if deliver_bs_raa { 2 } else { 1 }] {
2212 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, ref commitment_signed, .. } } => {
2213 assert!(update_add_htlcs.is_empty());
2214 assert_eq!(update_fail_htlcs.len(), 3);
2215 assert!(update_fulfill_htlcs.is_empty());
2216 assert!(update_fail_malformed_htlcs.is_empty());
2217 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
2219 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]).unwrap();
2220 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[1]).unwrap();
2221 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[2]).unwrap();
2223 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false, true);
2225 let events = nodes[0].node.get_and_clear_pending_msg_events();
2226 // If we delievered B's RAA we got an unknown preimage error, not something
2227 // that we should update our routing table for.
2228 assert_eq!(events.len(), if deliver_bs_raa { 2 } else { 3 });
2229 for event in events {
2231 MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
2232 _ => panic!("Unexpected event"),
2235 let events = nodes[0].node.get_and_clear_pending_events();
2236 assert_eq!(events.len(), 3);
2238 Event::PaymentFailed { ref payment_hash, .. } => {
2239 assert!(failed_htlcs.insert(payment_hash.0));
2241 _ => panic!("Unexpected event"),
2244 Event::PaymentFailed { ref payment_hash, .. } => {
2245 assert!(failed_htlcs.insert(payment_hash.0));
2247 _ => panic!("Unexpected event"),
2250 Event::PaymentFailed { ref payment_hash, .. } => {
2251 assert!(failed_htlcs.insert(payment_hash.0));
2253 _ => panic!("Unexpected event"),
2256 _ => panic!("Unexpected event"),
2259 assert!(failed_htlcs.contains(&first_payment_hash.0));
2260 assert!(failed_htlcs.contains(&second_payment_hash.0));
2261 assert!(failed_htlcs.contains(&third_payment_hash.0));
2265 fn test_commitment_revoked_fail_backward_exhaustive_a() {
2266 do_test_commitment_revoked_fail_backward_exhaustive(false, true, false);
2267 do_test_commitment_revoked_fail_backward_exhaustive(true, true, false);
2268 do_test_commitment_revoked_fail_backward_exhaustive(false, false, false);
2269 do_test_commitment_revoked_fail_backward_exhaustive(true, false, false);
2273 fn test_commitment_revoked_fail_backward_exhaustive_b() {
2274 do_test_commitment_revoked_fail_backward_exhaustive(false, true, true);
2275 do_test_commitment_revoked_fail_backward_exhaustive(true, true, true);
2276 do_test_commitment_revoked_fail_backward_exhaustive(false, false, true);
2277 do_test_commitment_revoked_fail_backward_exhaustive(true, false, true);
2281 fn test_htlc_ignore_latest_remote_commitment() {
2282 // Test that HTLC transactions spending the latest remote commitment transaction are simply
2283 // ignored if we cannot claim them. This originally tickled an invalid unwrap().
2284 let nodes = create_network(2);
2285 create_announced_chan_between_nodes(&nodes, 0, 1);
2287 route_payment(&nodes[0], &[&nodes[1]], 10000000);
2288 nodes[0].node.force_close_channel(&nodes[0].node.list_channels()[0].channel_id);
2289 check_closed_broadcast!(nodes[0]);
2291 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
2292 assert_eq!(node_txn.len(), 2);
2294 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2295 nodes[1].chain_monitor.block_connected_checked(&header, 1, &[&node_txn[0], &node_txn[1]], &[1; 2]);
2296 check_closed_broadcast!(nodes[1]);
2298 // Duplicate the block_connected call since this may happen due to other listeners
2299 // registering new transactions
2300 nodes[1].chain_monitor.block_connected_checked(&header, 1, &[&node_txn[0], &node_txn[1]], &[1; 2]);
2304 fn test_force_close_fail_back() {
2305 // Check which HTLCs are failed-backwards on channel force-closure
2306 let mut nodes = create_network(3);
2307 create_announced_chan_between_nodes(&nodes, 0, 1);
2308 create_announced_chan_between_nodes(&nodes, 1, 2);
2310 let route = nodes[0].router.get_route(&nodes[2].node.get_our_node_id(), None, &Vec::new(), 1000000, 42).unwrap();
2312 let (our_payment_preimage, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
2314 let mut payment_event = {
2315 nodes[0].node.send_payment(route, our_payment_hash).unwrap();
2316 check_added_monitors!(nodes[0], 1);
2318 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
2319 assert_eq!(events.len(), 1);
2320 SendEvent::from_event(events.remove(0))
2323 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]).unwrap();
2324 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
2326 expect_pending_htlcs_forwardable!(nodes[1]);
2328 let mut events_2 = nodes[1].node.get_and_clear_pending_msg_events();
2329 assert_eq!(events_2.len(), 1);
2330 payment_event = SendEvent::from_event(events_2.remove(0));
2331 assert_eq!(payment_event.msgs.len(), 1);
2333 check_added_monitors!(nodes[1], 1);
2334 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]).unwrap();
2335 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg).unwrap();
2336 check_added_monitors!(nodes[2], 1);
2337 let (_, _) = get_revoke_commit_msgs!(nodes[2], nodes[1].node.get_our_node_id());
2339 // nodes[2] now has the latest commitment transaction, but hasn't revoked its previous
2340 // state or updated nodes[1]' state. Now force-close and broadcast that commitment/HTLC
2341 // transaction and ensure nodes[1] doesn't fail-backwards (this was originally a bug!).
2343 nodes[2].node.force_close_channel(&payment_event.commitment_msg.channel_id);
2344 check_closed_broadcast!(nodes[2]);
2346 let mut node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap();
2347 // Note that we don't bother broadcasting the HTLC-Success transaction here as we don't
2348 // have a use for it unless nodes[2] learns the preimage somehow, the funds will go
2349 // back to nodes[1] upon timeout otherwise.
2350 assert_eq!(node_txn.len(), 1);
2354 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2355 nodes[1].chain_monitor.block_connected_checked(&header, 1, &[&tx], &[1]);
2357 // Note no UpdateHTLCs event here from nodes[1] to nodes[0]!
2358 check_closed_broadcast!(nodes[1]);
2360 // Now check that if we add the preimage to ChannelMonitor it broadcasts our HTLC-Success..
2362 let mut monitors = nodes[2].chan_monitor.simple_monitor.monitors.lock().unwrap();
2363 monitors.get_mut(&OutPoint::new(Sha256dHash::from(&payment_event.commitment_msg.channel_id[..]), 0)).unwrap()
2364 .provide_payment_preimage(&our_payment_hash, &our_payment_preimage);
2366 nodes[2].chain_monitor.block_connected_checked(&header, 1, &[&tx], &[1]);
2367 let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap();
2368 assert_eq!(node_txn.len(), 1);
2369 assert_eq!(node_txn[0].input.len(), 1);
2370 assert_eq!(node_txn[0].input[0].previous_output.txid, tx.txid());
2371 assert_eq!(node_txn[0].lock_time, 0); // Must be an HTLC-Success
2372 assert_eq!(node_txn[0].input[0].witness.len(), 5); // Must be an HTLC-Success
2374 check_spends!(node_txn[0], tx);
2378 fn test_unconf_chan() {
2379 // After creating a chan between nodes, we disconnect all blocks previously seen to force a channel close on nodes[0] side
2380 let nodes = create_network(2);
2381 create_announced_chan_between_nodes(&nodes, 0, 1);
2383 let channel_state = nodes[0].node.channel_state.lock().unwrap();
2384 assert_eq!(channel_state.by_id.len(), 1);
2385 assert_eq!(channel_state.short_to_id.len(), 1);
2386 mem::drop(channel_state);
2388 let mut headers = Vec::new();
2389 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2390 headers.push(header.clone());
2392 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2393 headers.push(header.clone());
2395 while !headers.is_empty() {
2396 nodes[0].node.block_disconnected(&headers.pop().unwrap());
2398 check_closed_broadcast!(nodes[0]);
2399 let channel_state = nodes[0].node.channel_state.lock().unwrap();
2400 assert_eq!(channel_state.by_id.len(), 0);
2401 assert_eq!(channel_state.short_to_id.len(), 0);
2405 fn test_simple_peer_disconnect() {
2406 // Test that we can reconnect when there are no lost messages
2407 let nodes = create_network(3);
2408 create_announced_chan_between_nodes(&nodes, 0, 1);
2409 create_announced_chan_between_nodes(&nodes, 1, 2);
2411 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
2412 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
2413 reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
2415 let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0;
2416 let payment_hash_2 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1;
2417 fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_hash_2);
2418 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_preimage_1);
2420 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
2421 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
2422 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
2424 let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0;
2425 let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0;
2426 let payment_hash_5 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1;
2427 let payment_hash_6 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1;
2429 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
2430 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
2432 claim_payment_along_route(&nodes[0], &vec!(&nodes[1], &nodes[2]), true, payment_preimage_3);
2433 fail_payment_along_route(&nodes[0], &[&nodes[1], &nodes[2]], true, payment_hash_5);
2435 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (1, 0), (1, 0), (false, false));
2437 let events = nodes[0].node.get_and_clear_pending_events();
2438 assert_eq!(events.len(), 2);
2440 Event::PaymentSent { payment_preimage } => {
2441 assert_eq!(payment_preimage, payment_preimage_3);
2443 _ => panic!("Unexpected event"),
2446 Event::PaymentFailed { payment_hash, rejected_by_dest, .. } => {
2447 assert_eq!(payment_hash, payment_hash_5);
2448 assert!(rejected_by_dest);
2450 _ => panic!("Unexpected event"),
2454 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_preimage_4);
2455 fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_hash_6);
2458 fn do_test_drop_messages_peer_disconnect(messages_delivered: u8) {
2459 // Test that we can reconnect when in-flight HTLC updates get dropped
2460 let mut nodes = create_network(2);
2461 if messages_delivered == 0 {
2462 create_chan_between_nodes_with_value_a(&nodes[0], &nodes[1], 100000, 10001);
2463 // nodes[1] doesn't receive the funding_locked message (it'll be re-sent on reconnect)
2465 create_announced_chan_between_nodes(&nodes, 0, 1);
2468 let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), Some(&nodes[0].node.list_usable_channels()), &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap();
2469 let (payment_preimage_1, payment_hash_1) = get_payment_preimage_hash!(nodes[0]);
2471 let payment_event = {
2472 nodes[0].node.send_payment(route.clone(), payment_hash_1).unwrap();
2473 check_added_monitors!(nodes[0], 1);
2475 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
2476 assert_eq!(events.len(), 1);
2477 SendEvent::from_event(events.remove(0))
2479 assert_eq!(nodes[1].node.get_our_node_id(), payment_event.node_id);
2481 if messages_delivered < 2 {
2482 // Drop the payment_event messages, and let them get re-generated in reconnect_nodes!
2484 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]).unwrap();
2485 if messages_delivered >= 3 {
2486 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event.commitment_msg).unwrap();
2487 check_added_monitors!(nodes[1], 1);
2488 let (bs_revoke_and_ack, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
2490 if messages_delivered >= 4 {
2491 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack).unwrap();
2492 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2493 check_added_monitors!(nodes[0], 1);
2495 if messages_delivered >= 5 {
2496 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_commitment_signed).unwrap();
2497 let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2498 // No commitment_signed so get_event_msg's assert(len == 1) passes
2499 check_added_monitors!(nodes[0], 1);
2501 if messages_delivered >= 6 {
2502 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack).unwrap();
2503 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2504 check_added_monitors!(nodes[1], 1);
2511 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
2512 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
2513 if messages_delivered < 3 {
2514 // Even if the funding_locked messages get exchanged, as long as nothing further was
2515 // received on either side, both sides will need to resend them.
2516 reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 1), (0, 0), (0, 0), (0, 0), (false, false));
2517 } else if messages_delivered == 3 {
2518 // nodes[0] still wants its RAA + commitment_signed
2519 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (-1, 0), (0, 0), (0, 0), (0, 0), (true, false));
2520 } else if messages_delivered == 4 {
2521 // nodes[0] still wants its commitment_signed
2522 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (-1, 0), (0, 0), (0, 0), (0, 0), (false, false));
2523 } else if messages_delivered == 5 {
2524 // nodes[1] still wants its final RAA
2525 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, true));
2526 } else if messages_delivered == 6 {
2527 // Everything was delivered...
2528 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
2531 let events_1 = nodes[1].node.get_and_clear_pending_events();
2532 assert_eq!(events_1.len(), 1);
2534 Event::PendingHTLCsForwardable { .. } => { },
2535 _ => panic!("Unexpected event"),
2538 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
2539 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
2540 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
2542 nodes[1].node.channel_state.lock().unwrap().next_forward = Instant::now();
2543 nodes[1].node.process_pending_htlc_forwards();
2545 let events_2 = nodes[1].node.get_and_clear_pending_events();
2546 assert_eq!(events_2.len(), 1);
2548 Event::PaymentReceived { ref payment_hash, amt } => {
2549 assert_eq!(payment_hash_1, *payment_hash);
2550 assert_eq!(amt, 1000000);
2552 _ => panic!("Unexpected event"),
2555 nodes[1].node.claim_funds(payment_preimage_1);
2556 check_added_monitors!(nodes[1], 1);
2558 let events_3 = nodes[1].node.get_and_clear_pending_msg_events();
2559 assert_eq!(events_3.len(), 1);
2560 let (update_fulfill_htlc, commitment_signed) = match events_3[0] {
2561 MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => {
2562 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
2563 assert!(updates.update_add_htlcs.is_empty());
2564 assert!(updates.update_fail_htlcs.is_empty());
2565 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
2566 assert!(updates.update_fail_malformed_htlcs.is_empty());
2567 assert!(updates.update_fee.is_none());
2568 (updates.update_fulfill_htlcs[0].clone(), updates.commitment_signed.clone())
2570 _ => panic!("Unexpected event"),
2573 if messages_delivered >= 1 {
2574 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_htlc).unwrap();
2576 let events_4 = nodes[0].node.get_and_clear_pending_events();
2577 assert_eq!(events_4.len(), 1);
2579 Event::PaymentSent { ref payment_preimage } => {
2580 assert_eq!(payment_preimage_1, *payment_preimage);
2582 _ => panic!("Unexpected event"),
2585 if messages_delivered >= 2 {
2586 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed).unwrap();
2587 check_added_monitors!(nodes[0], 1);
2588 let (as_revoke_and_ack, as_commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2590 if messages_delivered >= 3 {
2591 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack).unwrap();
2592 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2593 check_added_monitors!(nodes[1], 1);
2595 if messages_delivered >= 4 {
2596 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_signed).unwrap();
2597 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2598 // No commitment_signed so get_event_msg's assert(len == 1) passes
2599 check_added_monitors!(nodes[1], 1);
2601 if messages_delivered >= 5 {
2602 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack).unwrap();
2603 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2604 check_added_monitors!(nodes[0], 1);
2611 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
2612 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
2613 if messages_delivered < 2 {
2614 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (1, 0), (0, 0), (0, 0), (false, false));
2615 //TODO: Deduplicate PaymentSent events, then enable this if:
2616 //if messages_delivered < 1 {
2617 let events_4 = nodes[0].node.get_and_clear_pending_events();
2618 assert_eq!(events_4.len(), 1);
2620 Event::PaymentSent { ref payment_preimage } => {
2621 assert_eq!(payment_preimage_1, *payment_preimage);
2623 _ => panic!("Unexpected event"),
2626 } else if messages_delivered == 2 {
2627 // nodes[0] still wants its RAA + commitment_signed
2628 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, -1), (0, 0), (0, 0), (0, 0), (false, true));
2629 } else if messages_delivered == 3 {
2630 // nodes[0] still wants its commitment_signed
2631 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, -1), (0, 0), (0, 0), (0, 0), (false, false));
2632 } else if messages_delivered == 4 {
2633 // nodes[1] still wants its final RAA
2634 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (true, false));
2635 } else if messages_delivered == 5 {
2636 // Everything was delivered...
2637 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
2640 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
2641 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
2642 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
2644 // Channel should still work fine...
2645 let payment_preimage_2 = send_along_route(&nodes[0], route, &[&nodes[1]], 1000000).0;
2646 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2);
2650 fn test_drop_messages_peer_disconnect_a() {
2651 do_test_drop_messages_peer_disconnect(0);
2652 do_test_drop_messages_peer_disconnect(1);
2653 do_test_drop_messages_peer_disconnect(2);
2654 do_test_drop_messages_peer_disconnect(3);
2658 fn test_drop_messages_peer_disconnect_b() {
2659 do_test_drop_messages_peer_disconnect(4);
2660 do_test_drop_messages_peer_disconnect(5);
2661 do_test_drop_messages_peer_disconnect(6);
2665 fn test_funding_peer_disconnect() {
2666 // Test that we can lock in our funding tx while disconnected
2667 let nodes = create_network(2);
2668 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001);
2670 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
2671 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
2673 confirm_transaction(&nodes[0].chain_monitor, &tx, tx.version);
2674 let events_1 = nodes[0].node.get_and_clear_pending_msg_events();
2675 assert_eq!(events_1.len(), 1);
2677 MessageSendEvent::SendFundingLocked { ref node_id, msg: _ } => {
2678 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
2680 _ => panic!("Unexpected event"),
2683 reconnect_nodes(&nodes[0], &nodes[1], (false, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
2685 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
2686 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
2688 confirm_transaction(&nodes[1].chain_monitor, &tx, tx.version);
2689 let events_2 = nodes[1].node.get_and_clear_pending_msg_events();
2690 assert_eq!(events_2.len(), 2);
2692 MessageSendEvent::SendFundingLocked { ref node_id, msg: _ } => {
2693 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
2695 _ => panic!("Unexpected event"),
2698 MessageSendEvent::SendAnnouncementSignatures { ref node_id, msg: _ } => {
2699 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
2701 _ => panic!("Unexpected event"),
2704 reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
2706 // TODO: We shouldn't need to manually pass list_usable_chanels here once we support
2707 // rebroadcasting announcement_signatures upon reconnect.
2709 let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), Some(&nodes[0].node.list_usable_channels()), &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap();
2710 let (payment_preimage, _) = send_along_route(&nodes[0], route, &[&nodes[1]], 1000000);
2711 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage);
2715 fn test_drop_messages_peer_disconnect_dual_htlc() {
2716 // Test that we can handle reconnecting when both sides of a channel have pending
2717 // commitment_updates when we disconnect.
2718 let mut nodes = create_network(2);
2719 create_announced_chan_between_nodes(&nodes, 0, 1);
2721 let (payment_preimage_1, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
2723 // Now try to send a second payment which will fail to send
2724 let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap();
2725 let (payment_preimage_2, payment_hash_2) = get_payment_preimage_hash!(nodes[0]);
2727 nodes[0].node.send_payment(route.clone(), payment_hash_2).unwrap();
2728 check_added_monitors!(nodes[0], 1);
2730 let events_1 = nodes[0].node.get_and_clear_pending_msg_events();
2731 assert_eq!(events_1.len(), 1);
2733 MessageSendEvent::UpdateHTLCs { .. } => {},
2734 _ => panic!("Unexpected event"),
2737 assert!(nodes[1].node.claim_funds(payment_preimage_1));
2738 check_added_monitors!(nodes[1], 1);
2740 let events_2 = nodes[1].node.get_and_clear_pending_msg_events();
2741 assert_eq!(events_2.len(), 1);
2743 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => {
2744 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
2745 assert!(update_add_htlcs.is_empty());
2746 assert_eq!(update_fulfill_htlcs.len(), 1);
2747 assert!(update_fail_htlcs.is_empty());
2748 assert!(update_fail_malformed_htlcs.is_empty());
2749 assert!(update_fee.is_none());
2751 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_htlcs[0]).unwrap();
2752 let events_3 = nodes[0].node.get_and_clear_pending_events();
2753 assert_eq!(events_3.len(), 1);
2755 Event::PaymentSent { ref payment_preimage } => {
2756 assert_eq!(*payment_preimage, payment_preimage_1);
2758 _ => panic!("Unexpected event"),
2761 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), commitment_signed).unwrap();
2762 let _ = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2763 // No commitment_signed so get_event_msg's assert(len == 1) passes
2764 check_added_monitors!(nodes[0], 1);
2766 _ => panic!("Unexpected event"),
2769 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
2770 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
2772 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id());
2773 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
2774 assert_eq!(reestablish_1.len(), 1);
2775 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id());
2776 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
2777 assert_eq!(reestablish_2.len(), 1);
2779 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]).unwrap();
2780 let as_resp = handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
2781 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]).unwrap();
2782 let bs_resp = handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
2784 assert!(as_resp.0.is_none());
2785 assert!(bs_resp.0.is_none());
2787 assert!(bs_resp.1.is_none());
2788 assert!(bs_resp.2.is_none());
2790 assert!(as_resp.3 == RAACommitmentOrder::CommitmentFirst);
2792 assert_eq!(as_resp.2.as_ref().unwrap().update_add_htlcs.len(), 1);
2793 assert!(as_resp.2.as_ref().unwrap().update_fulfill_htlcs.is_empty());
2794 assert!(as_resp.2.as_ref().unwrap().update_fail_htlcs.is_empty());
2795 assert!(as_resp.2.as_ref().unwrap().update_fail_malformed_htlcs.is_empty());
2796 assert!(as_resp.2.as_ref().unwrap().update_fee.is_none());
2797 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &as_resp.2.as_ref().unwrap().update_add_htlcs[0]).unwrap();
2798 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_resp.2.as_ref().unwrap().commitment_signed).unwrap();
2799 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2800 // No commitment_signed so get_event_msg's assert(len == 1) passes
2801 check_added_monitors!(nodes[1], 1);
2803 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), as_resp.1.as_ref().unwrap()).unwrap();
2804 let bs_second_commitment_signed = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
2805 assert!(bs_second_commitment_signed.update_add_htlcs.is_empty());
2806 assert!(bs_second_commitment_signed.update_fulfill_htlcs.is_empty());
2807 assert!(bs_second_commitment_signed.update_fail_htlcs.is_empty());
2808 assert!(bs_second_commitment_signed.update_fail_malformed_htlcs.is_empty());
2809 assert!(bs_second_commitment_signed.update_fee.is_none());
2810 check_added_monitors!(nodes[1], 1);
2812 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack).unwrap();
2813 let as_commitment_signed = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2814 assert!(as_commitment_signed.update_add_htlcs.is_empty());
2815 assert!(as_commitment_signed.update_fulfill_htlcs.is_empty());
2816 assert!(as_commitment_signed.update_fail_htlcs.is_empty());
2817 assert!(as_commitment_signed.update_fail_malformed_htlcs.is_empty());
2818 assert!(as_commitment_signed.update_fee.is_none());
2819 check_added_monitors!(nodes[0], 1);
2821 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_commitment_signed.commitment_signed).unwrap();
2822 let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2823 // No commitment_signed so get_event_msg's assert(len == 1) passes
2824 check_added_monitors!(nodes[0], 1);
2826 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_signed.commitment_signed).unwrap();
2827 let bs_second_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2828 // No commitment_signed so get_event_msg's assert(len == 1) passes
2829 check_added_monitors!(nodes[1], 1);
2831 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack).unwrap();
2832 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2833 check_added_monitors!(nodes[1], 1);
2835 expect_pending_htlcs_forwardable!(nodes[1]);
2837 let events_5 = nodes[1].node.get_and_clear_pending_events();
2838 assert_eq!(events_5.len(), 1);
2840 Event::PaymentReceived { ref payment_hash, amt: _ } => {
2841 assert_eq!(payment_hash_2, *payment_hash);
2843 _ => panic!("Unexpected event"),
2846 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke_and_ack).unwrap();
2847 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2848 check_added_monitors!(nodes[0], 1);
2850 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2);
2854 fn test_invalid_channel_announcement() {
2855 //Test BOLT 7 channel_announcement msg requirement for final node, gather data to build customed channel_announcement msgs
2856 let secp_ctx = Secp256k1::new();
2857 let nodes = create_network(2);
2859 let chan_announcement = create_chan_between_nodes(&nodes[0], &nodes[1]);
2861 let a_channel_lock = nodes[0].node.channel_state.lock().unwrap();
2862 let b_channel_lock = nodes[1].node.channel_state.lock().unwrap();
2863 let as_chan = a_channel_lock.by_id.get(&chan_announcement.3).unwrap();
2864 let bs_chan = b_channel_lock.by_id.get(&chan_announcement.3).unwrap();
2866 let _ = nodes[0].router.handle_htlc_fail_channel_update(&msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id : as_chan.get_short_channel_id().unwrap(), is_permanent: false } );
2868 let as_bitcoin_key = PublicKey::from_secret_key(&secp_ctx, &as_chan.get_local_keys().funding_key);
2869 let bs_bitcoin_key = PublicKey::from_secret_key(&secp_ctx, &bs_chan.get_local_keys().funding_key);
2871 let as_network_key = nodes[0].node.get_our_node_id();
2872 let bs_network_key = nodes[1].node.get_our_node_id();
2874 let were_node_one = as_bitcoin_key.serialize()[..] < bs_bitcoin_key.serialize()[..];
2876 let mut chan_announcement;
2878 macro_rules! dummy_unsigned_msg {
2880 msgs::UnsignedChannelAnnouncement {
2881 features: msgs::GlobalFeatures::new(),
2882 chain_hash: genesis_block(Network::Testnet).header.bitcoin_hash(),
2883 short_channel_id: as_chan.get_short_channel_id().unwrap(),
2884 node_id_1: if were_node_one { as_network_key } else { bs_network_key },
2885 node_id_2: if were_node_one { bs_network_key } else { as_network_key },
2886 bitcoin_key_1: if were_node_one { as_bitcoin_key } else { bs_bitcoin_key },
2887 bitcoin_key_2: if were_node_one { bs_bitcoin_key } else { as_bitcoin_key },
2888 excess_data: Vec::new(),
2893 macro_rules! sign_msg {
2894 ($unsigned_msg: expr) => {
2895 let msghash = Message::from_slice(&Sha256dHash::from_data(&$unsigned_msg.encode()[..])[..]).unwrap();
2896 let as_bitcoin_sig = secp_ctx.sign(&msghash, &as_chan.get_local_keys().funding_key);
2897 let bs_bitcoin_sig = secp_ctx.sign(&msghash, &bs_chan.get_local_keys().funding_key);
2898 let as_node_sig = secp_ctx.sign(&msghash, &nodes[0].keys_manager.get_node_secret());
2899 let bs_node_sig = secp_ctx.sign(&msghash, &nodes[1].keys_manager.get_node_secret());
2900 chan_announcement = msgs::ChannelAnnouncement {
2901 node_signature_1 : if were_node_one { as_node_sig } else { bs_node_sig},
2902 node_signature_2 : if were_node_one { bs_node_sig } else { as_node_sig},
2903 bitcoin_signature_1: if were_node_one { as_bitcoin_sig } else { bs_bitcoin_sig },
2904 bitcoin_signature_2 : if were_node_one { bs_bitcoin_sig } else { as_bitcoin_sig },
2905 contents: $unsigned_msg
2910 let unsigned_msg = dummy_unsigned_msg!();
2911 sign_msg!(unsigned_msg);
2912 assert_eq!(nodes[0].router.handle_channel_announcement(&chan_announcement).unwrap(), true);
2913 let _ = nodes[0].router.handle_htlc_fail_channel_update(&msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id : as_chan.get_short_channel_id().unwrap(), is_permanent: false } );
2915 // Configured with Network::Testnet
2916 let mut unsigned_msg = dummy_unsigned_msg!();
2917 unsigned_msg.chain_hash = genesis_block(Network::Bitcoin).header.bitcoin_hash();
2918 sign_msg!(unsigned_msg);
2919 assert!(nodes[0].router.handle_channel_announcement(&chan_announcement).is_err());
2921 let mut unsigned_msg = dummy_unsigned_msg!();
2922 unsigned_msg.chain_hash = Sha256dHash::from_data(&[1,2,3,4,5,6,7,8,9]);
2923 sign_msg!(unsigned_msg);
2924 assert!(nodes[0].router.handle_channel_announcement(&chan_announcement).is_err());
2928 fn test_no_txn_manager_serialize_deserialize() {
2929 let mut nodes = create_network(2);
2931 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001);
2933 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
2935 let nodes_0_serialized = nodes[0].node.encode();
2936 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
2937 nodes[0].chan_monitor.simple_monitor.monitors.lock().unwrap().iter().next().unwrap().1.write_for_disk(&mut chan_0_monitor_serialized).unwrap();
2939 nodes[0].chan_monitor = Arc::new(test_utils::TestChannelMonitor::new(nodes[0].chain_monitor.clone(), nodes[0].tx_broadcaster.clone(), Arc::new(test_utils::TestLogger::new())));
2940 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
2941 let (_, chan_0_monitor) = <(Sha256dHash, ChannelMonitor)>::read(&mut chan_0_monitor_read, Arc::new(test_utils::TestLogger::new())).unwrap();
2942 assert!(chan_0_monitor_read.is_empty());
2944 let mut nodes_0_read = &nodes_0_serialized[..];
2945 let config = UserConfig::new();
2946 let keys_manager = Arc::new(keysinterface::KeysManager::new(&nodes[0].node_seed, Network::Testnet, Arc::new(test_utils::TestLogger::new())));
2947 let (_, nodes_0_deserialized) = {
2948 let mut channel_monitors = HashMap::new();
2949 channel_monitors.insert(chan_0_monitor.get_funding_txo().unwrap(), &chan_0_monitor);
2950 <(Sha256dHash, ChannelManager)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
2951 default_config: config,
2953 fee_estimator: Arc::new(test_utils::TestFeeEstimator { sat_per_kw: 253 }),
2954 monitor: nodes[0].chan_monitor.clone(),
2955 chain_monitor: nodes[0].chain_monitor.clone(),
2956 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
2957 logger: Arc::new(test_utils::TestLogger::new()),
2958 channel_monitors: &channel_monitors,
2961 assert!(nodes_0_read.is_empty());
2963 assert!(nodes[0].chan_monitor.add_update_monitor(chan_0_monitor.get_funding_txo().unwrap(), chan_0_monitor).is_ok());
2964 nodes[0].node = Arc::new(nodes_0_deserialized);
2965 let nodes_0_as_listener: Arc<ChainListener> = nodes[0].node.clone();
2966 nodes[0].chain_monitor.register_listener(Arc::downgrade(&nodes_0_as_listener));
2967 assert_eq!(nodes[0].node.list_channels().len(), 1);
2968 check_added_monitors!(nodes[0], 1);
2970 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id());
2971 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
2972 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id());
2973 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
2975 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]).unwrap();
2976 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2977 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]).unwrap();
2978 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2980 let (funding_locked, _) = create_chan_between_nodes_with_value_confirm(&nodes[0], &nodes[1], &tx);
2981 let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_locked);
2982 for node in nodes.iter() {
2983 assert!(node.router.handle_channel_announcement(&announcement).unwrap());
2984 node.router.handle_channel_update(&as_update).unwrap();
2985 node.router.handle_channel_update(&bs_update).unwrap();
2988 send_payment(&nodes[0], &[&nodes[1]], 1000000);
2992 fn test_simple_manager_serialize_deserialize() {
2993 let mut nodes = create_network(2);
2994 create_announced_chan_between_nodes(&nodes, 0, 1);
2996 let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
2997 let (_, our_payment_hash) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
2999 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3001 let nodes_0_serialized = nodes[0].node.encode();
3002 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
3003 nodes[0].chan_monitor.simple_monitor.monitors.lock().unwrap().iter().next().unwrap().1.write_for_disk(&mut chan_0_monitor_serialized).unwrap();
3005 nodes[0].chan_monitor = Arc::new(test_utils::TestChannelMonitor::new(nodes[0].chain_monitor.clone(), nodes[0].tx_broadcaster.clone(), Arc::new(test_utils::TestLogger::new())));
3006 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
3007 let (_, chan_0_monitor) = <(Sha256dHash, ChannelMonitor)>::read(&mut chan_0_monitor_read, Arc::new(test_utils::TestLogger::new())).unwrap();
3008 assert!(chan_0_monitor_read.is_empty());
3010 let mut nodes_0_read = &nodes_0_serialized[..];
3011 let keys_manager = Arc::new(keysinterface::KeysManager::new(&nodes[0].node_seed, Network::Testnet, Arc::new(test_utils::TestLogger::new())));
3012 let (_, nodes_0_deserialized) = {
3013 let mut channel_monitors = HashMap::new();
3014 channel_monitors.insert(chan_0_monitor.get_funding_txo().unwrap(), &chan_0_monitor);
3015 <(Sha256dHash, ChannelManager)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
3016 default_config: UserConfig::new(),
3018 fee_estimator: Arc::new(test_utils::TestFeeEstimator { sat_per_kw: 253 }),
3019 monitor: nodes[0].chan_monitor.clone(),
3020 chain_monitor: nodes[0].chain_monitor.clone(),
3021 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
3022 logger: Arc::new(test_utils::TestLogger::new()),
3023 channel_monitors: &channel_monitors,
3026 assert!(nodes_0_read.is_empty());
3028 assert!(nodes[0].chan_monitor.add_update_monitor(chan_0_monitor.get_funding_txo().unwrap(), chan_0_monitor).is_ok());
3029 nodes[0].node = Arc::new(nodes_0_deserialized);
3030 check_added_monitors!(nodes[0], 1);
3032 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3034 fail_payment(&nodes[0], &[&nodes[1]], our_payment_hash);
3035 claim_payment(&nodes[0], &[&nodes[1]], our_payment_preimage);
3039 fn test_manager_serialize_deserialize_inconsistent_monitor() {
3040 // Test deserializing a ChannelManager with a out-of-date ChannelMonitor
3041 let mut nodes = create_network(4);
3042 create_announced_chan_between_nodes(&nodes, 0, 1);
3043 create_announced_chan_between_nodes(&nodes, 2, 0);
3044 let (_, _, channel_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 3);
3046 let (our_payment_preimage, _) = route_payment(&nodes[2], &[&nodes[0], &nodes[1]], 1000000);
3048 // Serialize the ChannelManager here, but the monitor we keep up-to-date
3049 let nodes_0_serialized = nodes[0].node.encode();
3051 route_payment(&nodes[0], &[&nodes[3]], 1000000);
3052 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3053 nodes[2].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3054 nodes[3].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3056 // Now the ChannelMonitor (which is now out-of-sync with ChannelManager for channel w/
3058 let mut node_0_monitors_serialized = Vec::new();
3059 for monitor in nodes[0].chan_monitor.simple_monitor.monitors.lock().unwrap().iter() {
3060 let mut writer = test_utils::TestVecWriter(Vec::new());
3061 monitor.1.write_for_disk(&mut writer).unwrap();
3062 node_0_monitors_serialized.push(writer.0);
3065 nodes[0].chan_monitor = Arc::new(test_utils::TestChannelMonitor::new(nodes[0].chain_monitor.clone(), nodes[0].tx_broadcaster.clone(), Arc::new(test_utils::TestLogger::new())));
3066 let mut node_0_monitors = Vec::new();
3067 for serialized in node_0_monitors_serialized.iter() {
3068 let mut read = &serialized[..];
3069 let (_, monitor) = <(Sha256dHash, ChannelMonitor)>::read(&mut read, Arc::new(test_utils::TestLogger::new())).unwrap();
3070 assert!(read.is_empty());
3071 node_0_monitors.push(monitor);
3074 let mut nodes_0_read = &nodes_0_serialized[..];
3075 let keys_manager = Arc::new(keysinterface::KeysManager::new(&nodes[0].node_seed, Network::Testnet, Arc::new(test_utils::TestLogger::new())));
3076 let (_, nodes_0_deserialized) = <(Sha256dHash, ChannelManager)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
3077 default_config: UserConfig::new(),
3079 fee_estimator: Arc::new(test_utils::TestFeeEstimator { sat_per_kw: 253 }),
3080 monitor: nodes[0].chan_monitor.clone(),
3081 chain_monitor: nodes[0].chain_monitor.clone(),
3082 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
3083 logger: Arc::new(test_utils::TestLogger::new()),
3084 channel_monitors: &node_0_monitors.iter().map(|monitor| { (monitor.get_funding_txo().unwrap(), monitor) }).collect(),
3086 assert!(nodes_0_read.is_empty());
3088 { // Channel close should result in a commitment tx and an HTLC tx
3089 let txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
3090 assert_eq!(txn.len(), 2);
3091 assert_eq!(txn[0].input[0].previous_output.txid, funding_tx.txid());
3092 assert_eq!(txn[1].input[0].previous_output.txid, txn[0].txid());
3095 for monitor in node_0_monitors.drain(..) {
3096 assert!(nodes[0].chan_monitor.add_update_monitor(monitor.get_funding_txo().unwrap(), monitor).is_ok());
3097 check_added_monitors!(nodes[0], 1);
3099 nodes[0].node = Arc::new(nodes_0_deserialized);
3101 // nodes[1] and nodes[2] have no lost state with nodes[0]...
3102 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3103 reconnect_nodes(&nodes[0], &nodes[2], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3104 //... and we can even still claim the payment!
3105 claim_payment(&nodes[2], &[&nodes[0], &nodes[1]], our_payment_preimage);
3107 nodes[3].node.peer_connected(&nodes[0].node.get_our_node_id());
3108 let reestablish = get_event_msg!(nodes[3], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
3109 nodes[0].node.peer_connected(&nodes[3].node.get_our_node_id());
3110 if let Err(msgs::HandleError { action: Some(msgs::ErrorAction::SendErrorMessage { msg }), .. }) = nodes[0].node.handle_channel_reestablish(&nodes[3].node.get_our_node_id(), &reestablish) {
3111 assert_eq!(msg.channel_id, channel_id);
3112 } else { panic!("Unexpected result"); }
3115 macro_rules! check_spendable_outputs {
3116 ($node: expr, $der_idx: expr) => {
3118 let events = $node.chan_monitor.simple_monitor.get_and_clear_pending_events();
3119 let mut txn = Vec::new();
3120 for event in events {
3122 Event::SpendableOutputs { ref outputs } => {
3123 for outp in outputs {
3125 SpendableOutputDescriptor::DynamicOutputP2WPKH { ref outpoint, ref key, ref output } => {
3127 previous_output: outpoint.clone(),
3128 script_sig: Script::new(),
3130 witness: Vec::new(),
3133 script_pubkey: Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(),
3134 value: output.value,
3136 let mut spend_tx = Transaction {
3142 let secp_ctx = Secp256k1::new();
3143 let remotepubkey = PublicKey::from_secret_key(&secp_ctx, &key);
3144 let witness_script = Address::p2pkh(&remotepubkey, Network::Testnet).script_pubkey();
3145 let sighash = Message::from_slice(&bip143::SighashComponents::new(&spend_tx).sighash_all(&spend_tx.input[0], &witness_script, output.value)[..]).unwrap();
3146 let remotesig = secp_ctx.sign(&sighash, key);
3147 spend_tx.input[0].witness.push(remotesig.serialize_der().to_vec());
3148 spend_tx.input[0].witness[0].push(SigHashType::All as u8);
3149 spend_tx.input[0].witness.push(remotepubkey.serialize().to_vec());
3152 SpendableOutputDescriptor::DynamicOutputP2WSH { ref outpoint, ref key, ref witness_script, ref to_self_delay, ref output } => {
3154 previous_output: outpoint.clone(),
3155 script_sig: Script::new(),
3156 sequence: *to_self_delay as u32,
3157 witness: Vec::new(),
3160 script_pubkey: Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(),
3161 value: output.value,
3163 let mut spend_tx = Transaction {
3169 let secp_ctx = Secp256k1::new();
3170 let sighash = Message::from_slice(&bip143::SighashComponents::new(&spend_tx).sighash_all(&spend_tx.input[0], witness_script, output.value)[..]).unwrap();
3171 let local_delaysig = secp_ctx.sign(&sighash, key);
3172 spend_tx.input[0].witness.push(local_delaysig.serialize_der().to_vec());
3173 spend_tx.input[0].witness[0].push(SigHashType::All as u8);
3174 spend_tx.input[0].witness.push(vec!(0));
3175 spend_tx.input[0].witness.push(witness_script.clone().into_bytes());
3178 SpendableOutputDescriptor::StaticOutput { ref outpoint, ref output } => {
3179 let secp_ctx = Secp256k1::new();
3181 previous_output: outpoint.clone(),
3182 script_sig: Script::new(),
3184 witness: Vec::new(),
3187 script_pubkey: Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(),
3188 value: output.value,
3190 let mut spend_tx = Transaction {
3194 output: vec![outp.clone()],
3197 match ExtendedPrivKey::new_master(Network::Testnet, &$node.node_seed) {
3199 match master_key.ckd_priv(&secp_ctx, ChildNumber::from_hardened_idx($der_idx)) {
3201 Err(_) => panic!("Your RNG is busted"),
3204 Err(_) => panic!("Your rng is busted"),
3207 let pubkey = ExtendedPubKey::from_private(&secp_ctx, &secret).public_key;
3208 let witness_script = Address::p2pkh(&pubkey, Network::Testnet).script_pubkey();
3209 let sighash = Message::from_slice(&bip143::SighashComponents::new(&spend_tx).sighash_all(&spend_tx.input[0], &witness_script, output.value)[..]).unwrap();
3210 let sig = secp_ctx.sign(&sighash, &secret.secret_key);
3211 spend_tx.input[0].witness.push(sig.serialize_der().to_vec());
3212 spend_tx.input[0].witness[0].push(SigHashType::All as u8);
3213 spend_tx.input[0].witness.push(pubkey.serialize().to_vec());
3219 _ => panic!("Unexpected event"),
3228 fn test_claim_sizeable_push_msat() {
3229 // Incidentally test SpendableOutput event generation due to detection of to_local output on commitment tx
3230 let nodes = create_network(2);
3232 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 99000000);
3233 nodes[1].node.force_close_channel(&chan.2);
3234 check_closed_broadcast!(nodes[1]);
3235 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
3236 assert_eq!(node_txn.len(), 1);
3237 check_spends!(node_txn[0], chan.3.clone());
3238 assert_eq!(node_txn[0].output.len(), 2); // We can't force trimming of to_remote output as channel_reserve_satoshis block us to do so at channel opening
3240 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3241 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn[0].clone()] }, 0);
3242 let spend_txn = check_spendable_outputs!(nodes[1], 1);
3243 assert_eq!(spend_txn.len(), 1);
3244 check_spends!(spend_txn[0], node_txn[0].clone());
3248 fn test_claim_on_remote_sizeable_push_msat() {
3249 // Same test as previous, just test on remote commitment tx, as per_commitment_point registration changes following you're funder/fundee and
3250 // to_remote output is encumbered by a P2WPKH
3252 let nodes = create_network(2);
3254 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 99000000);
3255 nodes[0].node.force_close_channel(&chan.2);
3256 check_closed_broadcast!(nodes[0]);
3258 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
3259 assert_eq!(node_txn.len(), 1);
3260 check_spends!(node_txn[0], chan.3.clone());
3261 assert_eq!(node_txn[0].output.len(), 2); // We can't force trimming of to_remote output as channel_reserve_satoshis block us to do so at channel opening
3263 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3264 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn[0].clone()] }, 0);
3265 check_closed_broadcast!(nodes[1]);
3266 let spend_txn = check_spendable_outputs!(nodes[1], 1);
3267 assert_eq!(spend_txn.len(), 2);
3268 assert_eq!(spend_txn[0], spend_txn[1]);
3269 check_spends!(spend_txn[0], node_txn[0].clone());
3273 fn test_claim_on_remote_revoked_sizeable_push_msat() {
3274 // Same test as previous, just test on remote revoked commitment tx, as per_commitment_point registration changes following you're funder/fundee and
3275 // to_remote output is encumbered by a P2WPKH
3277 let nodes = create_network(2);
3279 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 59000000);
3280 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
3281 let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().last_local_commitment_txn.clone();
3282 assert_eq!(revoked_local_txn[0].input.len(), 1);
3283 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan.3.txid());
3285 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage);
3286 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3287 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
3288 check_closed_broadcast!(nodes[1]);
3290 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
3291 let spend_txn = check_spendable_outputs!(nodes[1], 1);
3292 assert_eq!(spend_txn.len(), 4);
3293 assert_eq!(spend_txn[0], spend_txn[2]); // to_remote output on revoked remote commitment_tx
3294 check_spends!(spend_txn[0], revoked_local_txn[0].clone());
3295 assert_eq!(spend_txn[1], spend_txn[3]); // to_local output on local commitment tx
3296 check_spends!(spend_txn[1], node_txn[0].clone());
3300 fn test_static_spendable_outputs_preimage_tx() {
3301 let nodes = create_network(2);
3303 // Create some initial channels
3304 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
3306 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
3308 let commitment_tx = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone();
3309 assert_eq!(commitment_tx[0].input.len(), 1);
3310 assert_eq!(commitment_tx[0].input[0].previous_output.txid, chan_1.3.txid());
3312 // Settle A's commitment tx on B's chain
3313 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3314 assert!(nodes[1].node.claim_funds(payment_preimage));
3315 check_added_monitors!(nodes[1], 1);
3316 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()] }, 1);
3317 let events = nodes[1].node.get_and_clear_pending_msg_events();
3319 MessageSendEvent::UpdateHTLCs { .. } => {},
3320 _ => panic!("Unexpected event"),
3323 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
3324 _ => panic!("Unexepected event"),
3327 // Check B's monitor was able to send back output descriptor event for preimage tx on A's commitment tx
3328 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); // ChannelManager : 1 (local commitment tx), ChannelMonitor: 2 (1 preimage tx) * 2 (block-rescan)
3329 check_spends!(node_txn[0], commitment_tx[0].clone());
3330 assert_eq!(node_txn[0], node_txn[2]);
3331 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
3332 check_spends!(node_txn[1], chan_1.3.clone());
3334 let spend_txn = check_spendable_outputs!(nodes[1], 1); // , 0, 0, 1, 1);
3335 assert_eq!(spend_txn.len(), 2);
3336 assert_eq!(spend_txn[0], spend_txn[1]);
3337 check_spends!(spend_txn[0], node_txn[0].clone());
3341 fn test_static_spendable_outputs_justice_tx_revoked_commitment_tx() {
3342 let nodes = create_network(2);
3344 // Create some initial channels
3345 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
3347 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
3348 let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.iter().next().unwrap().1.last_local_commitment_txn.clone();
3349 assert_eq!(revoked_local_txn[0].input.len(), 1);
3350 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
3352 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage);
3354 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3355 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
3356 check_closed_broadcast!(nodes[1]);
3358 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
3359 assert_eq!(node_txn.len(), 3);
3360 assert_eq!(node_txn.pop().unwrap(), node_txn[0]);
3361 assert_eq!(node_txn[0].input.len(), 2);
3362 check_spends!(node_txn[0], revoked_local_txn[0].clone());
3364 let spend_txn = check_spendable_outputs!(nodes[1], 1);
3365 assert_eq!(spend_txn.len(), 2);
3366 assert_eq!(spend_txn[0], spend_txn[1]);
3367 check_spends!(spend_txn[0], node_txn[0].clone());
3371 fn test_static_spendable_outputs_justice_tx_revoked_htlc_timeout_tx() {
3372 let nodes = create_network(2);
3374 // Create some initial channels
3375 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
3377 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
3378 let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone();
3379 assert_eq!(revoked_local_txn[0].input.len(), 1);
3380 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
3382 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage);
3384 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3385 // A will generate HTLC-Timeout from revoked commitment tx
3386 nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
3387 check_closed_broadcast!(nodes[0]);
3389 let revoked_htlc_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
3390 assert_eq!(revoked_htlc_txn.len(), 3);
3391 assert_eq!(revoked_htlc_txn[0], revoked_htlc_txn[2]);
3392 assert_eq!(revoked_htlc_txn[0].input.len(), 1);
3393 assert_eq!(revoked_htlc_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
3394 check_spends!(revoked_htlc_txn[0], revoked_local_txn[0].clone());
3395 check_spends!(revoked_htlc_txn[1], chan_1.3.clone());
3397 // B will generate justice tx from A's revoked commitment/HTLC tx
3398 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone(), revoked_htlc_txn[0].clone()] }, 1);
3399 check_closed_broadcast!(nodes[1]);
3401 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
3402 assert_eq!(node_txn.len(), 4);
3403 assert_eq!(node_txn[3].input.len(), 1);
3404 check_spends!(node_txn[3], revoked_htlc_txn[0].clone());
3406 // Check B's ChannelMonitor was able to generate the right spendable output descriptor
3407 let spend_txn = check_spendable_outputs!(nodes[1], 1);
3408 assert_eq!(spend_txn.len(), 3);
3409 assert_eq!(spend_txn[0], spend_txn[1]);
3410 check_spends!(spend_txn[0], node_txn[0].clone());
3411 check_spends!(spend_txn[2], node_txn[3].clone());
3415 fn test_static_spendable_outputs_justice_tx_revoked_htlc_success_tx() {
3416 let nodes = create_network(2);
3418 // Create some initial channels
3419 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
3421 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
3422 let revoked_local_txn = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone();
3423 assert_eq!(revoked_local_txn[0].input.len(), 1);
3424 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
3426 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage);
3428 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3429 // B will generate HTLC-Success from revoked commitment tx
3430 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
3431 check_closed_broadcast!(nodes[1]);
3432 let revoked_htlc_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
3434 assert_eq!(revoked_htlc_txn.len(), 3);
3435 assert_eq!(revoked_htlc_txn[0], revoked_htlc_txn[2]);
3436 assert_eq!(revoked_htlc_txn[0].input.len(), 1);
3437 assert_eq!(revoked_htlc_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
3438 check_spends!(revoked_htlc_txn[0], revoked_local_txn[0].clone());
3440 // A will generate justice tx from B's revoked commitment/HTLC tx
3441 nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone(), revoked_htlc_txn[0].clone()] }, 1);
3442 check_closed_broadcast!(nodes[0]);
3444 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
3445 assert_eq!(node_txn.len(), 4);
3446 assert_eq!(node_txn[3].input.len(), 1);
3447 check_spends!(node_txn[3], revoked_htlc_txn[0].clone());
3449 // Check A's ChannelMonitor was able to generate the right spendable output descriptor
3450 let spend_txn = check_spendable_outputs!(nodes[0], 1);
3451 assert_eq!(spend_txn.len(), 5);
3452 assert_eq!(spend_txn[0], spend_txn[2]);
3453 assert_eq!(spend_txn[1], spend_txn[3]);
3454 check_spends!(spend_txn[0], revoked_local_txn[0].clone()); // spending to_remote output from revoked local tx
3455 check_spends!(spend_txn[1], node_txn[2].clone()); // spending justice tx output from revoked local tx htlc received output
3456 check_spends!(spend_txn[4], node_txn[3].clone()); // spending justice tx output on htlc success tx
3460 fn test_onchain_to_onchain_claim() {
3461 // Test that in case of channel closure, we detect the state of output thanks to
3462 // ChainWatchInterface and claim HTLC on downstream peer's remote commitment tx.
3463 // First, have C claim an HTLC against its own latest commitment transaction.
3464 // Then, broadcast these to B, which should update the monitor downstream on the A<->B
3466 // Finally, check that B will claim the HTLC output if A's latest commitment transaction
3469 let nodes = create_network(3);
3471 // Create some initial channels
3472 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
3473 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
3475 // Rebalance the network a bit by relaying one payment through all the channels ...
3476 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000);
3477 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000);
3479 let (payment_preimage, _payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
3480 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
3481 let commitment_tx = nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().last_local_commitment_txn.clone();
3482 check_spends!(commitment_tx[0], chan_2.3.clone());
3483 nodes[2].node.claim_funds(payment_preimage);
3484 check_added_monitors!(nodes[2], 1);
3485 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
3486 assert!(updates.update_add_htlcs.is_empty());
3487 assert!(updates.update_fail_htlcs.is_empty());
3488 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
3489 assert!(updates.update_fail_malformed_htlcs.is_empty());
3491 nodes[2].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1);
3492 check_closed_broadcast!(nodes[2]);
3494 let c_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 2 (commitment tx, HTLC-Success tx), ChannelMonitor : 1 (HTLC-Success tx)
3495 assert_eq!(c_txn.len(), 3);
3496 assert_eq!(c_txn[0], c_txn[2]);
3497 assert_eq!(commitment_tx[0], c_txn[1]);
3498 check_spends!(c_txn[1], chan_2.3.clone());
3499 check_spends!(c_txn[2], c_txn[1].clone());
3500 assert_eq!(c_txn[1].input[0].witness.clone().last().unwrap().len(), 71);
3501 assert_eq!(c_txn[2].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
3502 assert!(c_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
3503 assert_eq!(c_txn[0].lock_time, 0); // Success tx
3505 // So we broadcast C's commitment tx and HTLC-Success on B's chain, we should successfully be able to extract preimage and update downstream monitor
3506 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![c_txn[1].clone(), c_txn[2].clone()]}, 1);
3508 let mut b_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
3509 assert_eq!(b_txn.len(), 4);
3510 assert_eq!(b_txn[0], b_txn[3]);
3511 check_spends!(b_txn[1], chan_2.3); // B local commitment tx, issued by ChannelManager
3512 check_spends!(b_txn[2], b_txn[1].clone()); // HTLC-Timeout on B local commitment tx, issued by ChannelManager
3513 assert_eq!(b_txn[2].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
3514 assert!(b_txn[2].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
3515 assert_ne!(b_txn[2].lock_time, 0); // Timeout tx
3516 check_spends!(b_txn[0], c_txn[1].clone()); // timeout tx on C remote commitment tx, issued by ChannelMonitor, * 2 due to block rescan
3517 assert_eq!(b_txn[0].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
3518 assert!(b_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
3519 assert_ne!(b_txn[2].lock_time, 0); // Timeout tx
3522 let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
3523 check_added_monitors!(nodes[1], 1);
3524 match msg_events[0] {
3525 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
3526 _ => panic!("Unexpected event"),
3528 match msg_events[1] {
3529 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, .. } } => {
3530 assert!(update_add_htlcs.is_empty());
3531 assert!(update_fail_htlcs.is_empty());
3532 assert_eq!(update_fulfill_htlcs.len(), 1);
3533 assert!(update_fail_malformed_htlcs.is_empty());
3534 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
3536 _ => panic!("Unexpected event"),
3538 // Broadcast A's commitment tx on B's chain to see if we are able to claim inbound HTLC with our HTLC-Success tx
3539 let commitment_tx = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone();
3540 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1);
3541 let b_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
3542 assert_eq!(b_txn.len(), 3);
3543 check_spends!(b_txn[1], chan_1.3); // Local commitment tx, issued by ChannelManager
3544 assert_eq!(b_txn[0], b_txn[2]); // HTLC-Success tx, issued by ChannelMonitor, * 2 due to block rescan
3545 check_spends!(b_txn[0], commitment_tx[0].clone());
3546 assert_eq!(b_txn[0].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
3547 assert!(b_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
3548 assert_eq!(b_txn[2].lock_time, 0); // Success tx
3550 check_closed_broadcast!(nodes[1]);
3554 fn test_duplicate_payment_hash_one_failure_one_success() {
3555 // Topology : A --> B --> C
3556 // We route 2 payments with same hash between B and C, one will be timeout, the other successfully claim
3557 let mut nodes = create_network(3);
3559 create_announced_chan_between_nodes(&nodes, 0, 1);
3560 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2);
3562 let (our_payment_preimage, duplicate_payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 900000);
3563 *nodes[0].network_payment_count.borrow_mut() -= 1;
3564 assert_eq!(route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 900000).1, duplicate_payment_hash);
3566 let commitment_txn = nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().last_local_commitment_txn.clone();
3567 assert_eq!(commitment_txn[0].input.len(), 1);
3568 check_spends!(commitment_txn[0], chan_2.3.clone());
3570 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3571 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_txn[0].clone()] }, 1);
3572 check_closed_broadcast!(nodes[1]);
3574 let htlc_timeout_tx;
3575 { // Extract one of the two HTLC-Timeout transaction
3576 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
3577 assert_eq!(node_txn.len(), 7);
3578 assert_eq!(node_txn[0], node_txn[5]);
3579 assert_eq!(node_txn[1], node_txn[6]);
3580 check_spends!(node_txn[0], commitment_txn[0].clone());
3581 assert_eq!(node_txn[0].input.len(), 1);
3582 check_spends!(node_txn[1], commitment_txn[0].clone());
3583 assert_eq!(node_txn[1].input.len(), 1);
3584 assert_ne!(node_txn[0].input[0], node_txn[1].input[0]);
3585 check_spends!(node_txn[2], chan_2.3.clone());
3586 check_spends!(node_txn[3], node_txn[2].clone());
3587 check_spends!(node_txn[4], node_txn[2].clone());
3588 htlc_timeout_tx = node_txn[1].clone();
3591 nodes[2].node.claim_funds(our_payment_preimage);
3592 nodes[2].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_txn[0].clone()] }, 1);
3593 check_added_monitors!(nodes[2], 2);
3594 let events = nodes[2].node.get_and_clear_pending_msg_events();
3596 MessageSendEvent::UpdateHTLCs { .. } => {},
3597 _ => panic!("Unexpected event"),
3600 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
3601 _ => panic!("Unexepected event"),
3603 let htlc_success_txn: Vec<_> = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
3604 assert_eq!(htlc_success_txn.len(), 5);
3605 check_spends!(htlc_success_txn[2], chan_2.3.clone());
3606 assert_eq!(htlc_success_txn[0], htlc_success_txn[3]);
3607 assert_eq!(htlc_success_txn[0].input.len(), 1);
3608 assert_eq!(htlc_success_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
3609 assert_eq!(htlc_success_txn[1], htlc_success_txn[4]);
3610 assert_eq!(htlc_success_txn[1].input.len(), 1);
3611 assert_eq!(htlc_success_txn[1].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
3612 assert_ne!(htlc_success_txn[0].input[0], htlc_success_txn[1].input[0]);
3613 check_spends!(htlc_success_txn[0], commitment_txn[0].clone());
3614 check_spends!(htlc_success_txn[1], commitment_txn[0].clone());
3616 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![htlc_timeout_tx] }, 200);
3617 expect_pending_htlcs_forwardable!(nodes[1]);
3618 let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
3619 assert!(htlc_updates.update_add_htlcs.is_empty());
3620 assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
3621 assert_eq!(htlc_updates.update_fail_htlcs[0].htlc_id, 1);
3622 assert!(htlc_updates.update_fulfill_htlcs.is_empty());
3623 assert!(htlc_updates.update_fail_malformed_htlcs.is_empty());
3624 check_added_monitors!(nodes[1], 1);
3626 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]).unwrap();
3627 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
3629 commitment_signed_dance!(nodes[0], nodes[1], &htlc_updates.commitment_signed, false, true);
3630 let events = nodes[0].node.get_and_clear_pending_msg_events();
3631 assert_eq!(events.len(), 1);
3633 MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelClosed { .. } } => {
3635 _ => { panic!("Unexpected event"); }
3638 let events = nodes[0].node.get_and_clear_pending_events();
3640 Event::PaymentFailed { ref payment_hash, .. } => {
3641 assert_eq!(*payment_hash, duplicate_payment_hash);
3643 _ => panic!("Unexpected event"),
3646 // Solve 2nd HTLC by broadcasting on B's chain HTLC-Success Tx from C
3647 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![htlc_success_txn[0].clone()] }, 200);
3648 let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
3649 assert!(updates.update_add_htlcs.is_empty());
3650 assert!(updates.update_fail_htlcs.is_empty());
3651 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
3652 assert_eq!(updates.update_fulfill_htlcs[0].htlc_id, 0);
3653 assert!(updates.update_fail_malformed_htlcs.is_empty());
3654 check_added_monitors!(nodes[1], 1);
3656 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]).unwrap();
3657 commitment_signed_dance!(nodes[0], nodes[1], &updates.commitment_signed, false);
3659 let events = nodes[0].node.get_and_clear_pending_events();
3661 Event::PaymentSent { ref payment_preimage } => {
3662 assert_eq!(*payment_preimage, our_payment_preimage);
3664 _ => panic!("Unexpected event"),
3669 fn test_dynamic_spendable_outputs_local_htlc_success_tx() {
3670 let nodes = create_network(2);
3672 // Create some initial channels
3673 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
3675 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000).0;
3676 let local_txn = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone();
3677 assert_eq!(local_txn[0].input.len(), 1);
3678 check_spends!(local_txn[0], chan_1.3.clone());
3680 // Give B knowledge of preimage to be able to generate a local HTLC-Success Tx
3681 nodes[1].node.claim_funds(payment_preimage);
3682 check_added_monitors!(nodes[1], 1);
3683 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3684 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![local_txn[0].clone()] }, 1);
3685 let events = nodes[1].node.get_and_clear_pending_msg_events();
3687 MessageSendEvent::UpdateHTLCs { .. } => {},
3688 _ => panic!("Unexpected event"),
3691 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
3692 _ => panic!("Unexepected event"),
3694 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
3695 assert_eq!(node_txn[0].input.len(), 1);
3696 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
3697 check_spends!(node_txn[0], local_txn[0].clone());
3699 // Verify that B is able to spend its own HTLC-Success tx thanks to spendable output event given back by its ChannelMonitor
3700 let spend_txn = check_spendable_outputs!(nodes[1], 1);
3701 assert_eq!(spend_txn.len(), 2);
3702 check_spends!(spend_txn[0], node_txn[0].clone());
3703 check_spends!(spend_txn[1], node_txn[2].clone());
3706 fn do_test_fail_backwards_unrevoked_remote_announce(deliver_last_raa: bool, announce_latest: bool) {
3707 // Test that we fail backwards the full set of HTLCs we need to when remote broadcasts an
3708 // unrevoked commitment transaction.
3709 // This includes HTLCs which were below the dust threshold as well as HTLCs which were awaiting
3710 // a remote RAA before they could be failed backwards (and combinations thereof).
3711 // We also test duplicate-hash HTLCs by adding two nodes on each side of the target nodes which
3712 // use the same payment hashes.
3713 // Thus, we use a six-node network:
3718 // And test where C fails back to A/B when D announces its latest commitment transaction
3719 let nodes = create_network(6);
3721 create_announced_chan_between_nodes(&nodes, 0, 2);
3722 create_announced_chan_between_nodes(&nodes, 1, 2);
3723 let chan = create_announced_chan_between_nodes(&nodes, 2, 3);
3724 create_announced_chan_between_nodes(&nodes, 3, 4);
3725 create_announced_chan_between_nodes(&nodes, 3, 5);
3727 // Rebalance and check output sanity...
3728 send_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 500000);
3729 send_payment(&nodes[1], &[&nodes[2], &nodes[3], &nodes[5]], 500000);
3730 assert_eq!(nodes[3].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().last_local_commitment_txn[0].output.len(), 2);
3732 let ds_dust_limit = nodes[3].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().our_dust_limit_satoshis;
3734 let (_, payment_hash_1) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], ds_dust_limit*1000); // not added < dust limit + HTLC tx fee
3736 let (_, payment_hash_2) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], ds_dust_limit*1000); // not added < dust limit + HTLC tx fee
3737 let route = nodes[1].router.get_route(&nodes[5].node.get_our_node_id(), None, &Vec::new(), ds_dust_limit*1000, TEST_FINAL_CLTV).unwrap();
3739 send_along_route_with_hash(&nodes[1], route.clone(), &[&nodes[2], &nodes[3], &nodes[5]], ds_dust_limit*1000, payment_hash_1); // not added < dust limit + HTLC tx fee
3741 send_along_route_with_hash(&nodes[1], route, &[&nodes[2], &nodes[3], &nodes[5]], ds_dust_limit*1000, payment_hash_2); // not added < dust limit + HTLC tx fee
3743 let (_, payment_hash_3) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 1000000);
3745 let (_, payment_hash_4) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 1000000);
3746 let route = nodes[1].router.get_route(&nodes[5].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap();
3748 send_along_route_with_hash(&nodes[1], route.clone(), &[&nodes[2], &nodes[3], &nodes[5]], 1000000, payment_hash_3);
3750 send_along_route_with_hash(&nodes[1], route, &[&nodes[2], &nodes[3], &nodes[5]], 1000000, payment_hash_4);
3753 let (_, payment_hash_5) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 1000000);
3755 let route = nodes[1].router.get_route(&nodes[5].node.get_our_node_id(), None, &Vec::new(), ds_dust_limit*1000, TEST_FINAL_CLTV).unwrap();
3756 send_along_route_with_hash(&nodes[1], route, &[&nodes[2], &nodes[3], &nodes[5]], ds_dust_limit*1000, payment_hash_5); // not added < dust limit + HTLC tx fee
3759 let (_, payment_hash_6) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], ds_dust_limit*1000); // not added < dust limit + HTLC tx fee
3761 let route = nodes[1].router.get_route(&nodes[5].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap();
3762 send_along_route_with_hash(&nodes[1], route, &[&nodes[2], &nodes[3], &nodes[5]], 1000000, payment_hash_6);
3764 // Double-check that six of the new HTLC were added
3765 // We now have six HTLCs pending over the dust limit and six HTLCs under the dust limit (ie,
3766 // with to_local and to_remote outputs, 8 outputs and 6 HTLCs not included).
3767 assert_eq!(nodes[3].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().last_local_commitment_txn.len(), 1);
3768 assert_eq!(nodes[3].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().last_local_commitment_txn[0].output.len(), 8);
3770 // Now fail back three of the over-dust-limit and three of the under-dust-limit payments in one go.
3771 // Fail 0th below-dust, 4th above-dust, 8th above-dust, 10th below-dust HTLCs
3772 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_1, ds_dust_limit*1000));
3773 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_3, 1000000));
3774 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_5, 1000000));
3775 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_6, ds_dust_limit*1000));
3776 check_added_monitors!(nodes[4], 0);
3777 expect_pending_htlcs_forwardable!(nodes[4]);
3778 check_added_monitors!(nodes[4], 1);
3780 let four_removes = get_htlc_update_msgs!(nodes[4], nodes[3].node.get_our_node_id());
3781 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[0]).unwrap();
3782 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[1]).unwrap();
3783 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[2]).unwrap();
3784 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[3]).unwrap();
3785 commitment_signed_dance!(nodes[3], nodes[4], four_removes.commitment_signed, false);
3787 // Fail 3rd below-dust and 7th above-dust HTLCs
3788 assert!(nodes[5].node.fail_htlc_backwards(&payment_hash_2, ds_dust_limit*1000));
3789 assert!(nodes[5].node.fail_htlc_backwards(&payment_hash_4, 1000000));
3790 check_added_monitors!(nodes[5], 0);
3791 expect_pending_htlcs_forwardable!(nodes[5]);
3792 check_added_monitors!(nodes[5], 1);
3794 let two_removes = get_htlc_update_msgs!(nodes[5], nodes[3].node.get_our_node_id());
3795 nodes[3].node.handle_update_fail_htlc(&nodes[5].node.get_our_node_id(), &two_removes.update_fail_htlcs[0]).unwrap();
3796 nodes[3].node.handle_update_fail_htlc(&nodes[5].node.get_our_node_id(), &two_removes.update_fail_htlcs[1]).unwrap();
3797 commitment_signed_dance!(nodes[3], nodes[5], two_removes.commitment_signed, false);
3799 let ds_prev_commitment_tx = nodes[3].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().last_local_commitment_txn.clone();
3801 expect_pending_htlcs_forwardable!(nodes[3]);
3802 check_added_monitors!(nodes[3], 1);
3803 let six_removes = get_htlc_update_msgs!(nodes[3], nodes[2].node.get_our_node_id());
3804 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[0]).unwrap();
3805 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[1]).unwrap();
3806 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[2]).unwrap();
3807 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[3]).unwrap();
3808 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[4]).unwrap();
3809 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[5]).unwrap();
3810 if deliver_last_raa {
3811 commitment_signed_dance!(nodes[2], nodes[3], six_removes.commitment_signed, false);
3813 let _cs_last_raa = commitment_signed_dance!(nodes[2], nodes[3], six_removes.commitment_signed, false, true, false, true);
3816 // D's latest commitment transaction now contains 1st + 2nd + 9th HTLCs (implicitly, they're
3817 // below the dust limit) and the 5th + 6th + 11th HTLCs. It has failed back the 0th, 3rd, 4th,
3818 // 7th, 8th, and 10th, but as we haven't yet delivered the final RAA to C, the fails haven't
3819 // propagated back to A/B yet (and D has two unrevoked commitment transactions).
3821 // We now broadcast the latest commitment transaction, which *should* result in failures for
3822 // the 0th, 1st, 2nd, 3rd, 4th, 7th, 8th, 9th, and 10th HTLCs, ie all the below-dust HTLCs and
3823 // the non-broadcast above-dust HTLCs.
3825 // Alternatively, we may broadcast the previous commitment transaction, which should only
3826 // result in failures for the below-dust HTLCs, ie the 0th, 1st, 2nd, 3rd, 9th, and 10th HTLCs.
3827 let ds_last_commitment_tx = nodes[3].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().last_local_commitment_txn.clone();
3829 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3830 if announce_latest {
3831 nodes[2].chain_monitor.block_connected_checked(&header, 1, &[&ds_last_commitment_tx[0]], &[1; 1]);
3833 nodes[2].chain_monitor.block_connected_checked(&header, 1, &[&ds_prev_commitment_tx[0]], &[1; 1]);
3835 check_closed_broadcast!(nodes[2]);
3836 expect_pending_htlcs_forwardable!(nodes[2]);
3837 check_added_monitors!(nodes[2], 2);
3839 let cs_msgs = nodes[2].node.get_and_clear_pending_msg_events();
3840 assert_eq!(cs_msgs.len(), 2);
3841 let mut a_done = false;
3842 for msg in cs_msgs {
3844 MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => {
3845 // Both under-dust HTLCs and the one above-dust HTLC that we had already failed
3846 // should be failed-backwards here.
3847 let target = if *node_id == nodes[0].node.get_our_node_id() {
3848 // If announce_latest, expect 0th, 1st, 4th, 8th, 10th HTLCs, else only 0th, 1st, 10th below-dust HTLCs
3849 for htlc in &updates.update_fail_htlcs {
3850 assert!(htlc.htlc_id == 1 || htlc.htlc_id == 2 || htlc.htlc_id == 6 || if announce_latest { htlc.htlc_id == 3 || htlc.htlc_id == 5 } else { false });
3852 assert_eq!(updates.update_fail_htlcs.len(), if announce_latest { 5 } else { 3 });
3857 // If announce_latest, expect 2nd, 3rd, 7th, 9th HTLCs, else only 2nd, 3rd, 9th below-dust HTLCs
3858 for htlc in &updates.update_fail_htlcs {
3859 assert!(htlc.htlc_id == 1 || htlc.htlc_id == 2 || htlc.htlc_id == 5 || if announce_latest { htlc.htlc_id == 4 } else { false });
3861 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
3862 assert_eq!(updates.update_fail_htlcs.len(), if announce_latest { 4 } else { 3 });
3865 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]).unwrap();
3866 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[1]).unwrap();
3867 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[2]).unwrap();
3868 if announce_latest {
3869 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[3]).unwrap();
3870 if *node_id == nodes[0].node.get_our_node_id() {
3871 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[4]).unwrap();
3874 commitment_signed_dance!(target, nodes[2], updates.commitment_signed, false, true);
3876 _ => panic!("Unexpected event"),
3880 let as_events = nodes[0].node.get_and_clear_pending_events();
3881 assert_eq!(as_events.len(), if announce_latest { 5 } else { 3 });
3882 let mut as_failds = HashSet::new();
3883 for event in as_events.iter() {
3884 if let &Event::PaymentFailed { ref payment_hash, ref rejected_by_dest, .. } = event {
3885 assert!(as_failds.insert(*payment_hash));
3886 if *payment_hash != payment_hash_2 {
3887 assert_eq!(*rejected_by_dest, deliver_last_raa);
3889 assert!(!rejected_by_dest);
3891 } else { panic!("Unexpected event"); }
3893 assert!(as_failds.contains(&payment_hash_1));
3894 assert!(as_failds.contains(&payment_hash_2));
3895 if announce_latest {
3896 assert!(as_failds.contains(&payment_hash_3));
3897 assert!(as_failds.contains(&payment_hash_5));
3899 assert!(as_failds.contains(&payment_hash_6));
3901 let bs_events = nodes[1].node.get_and_clear_pending_events();
3902 assert_eq!(bs_events.len(), if announce_latest { 4 } else { 3 });
3903 let mut bs_failds = HashSet::new();
3904 for event in bs_events.iter() {
3905 if let &Event::PaymentFailed { ref payment_hash, ref rejected_by_dest, .. } = event {
3906 assert!(bs_failds.insert(*payment_hash));
3907 if *payment_hash != payment_hash_1 && *payment_hash != payment_hash_5 {
3908 assert_eq!(*rejected_by_dest, deliver_last_raa);
3910 assert!(!rejected_by_dest);
3912 } else { panic!("Unexpected event"); }
3914 assert!(bs_failds.contains(&payment_hash_1));
3915 assert!(bs_failds.contains(&payment_hash_2));
3916 if announce_latest {
3917 assert!(bs_failds.contains(&payment_hash_4));
3919 assert!(bs_failds.contains(&payment_hash_5));
3921 // For each HTLC which was not failed-back by normal process (ie deliver_last_raa), we should
3922 // get a PaymentFailureNetworkUpdate. A should have gotten 4 HTLCs which were failed-back due
3923 // to unknown-preimage-etc, B should have gotten 2. Thus, in the
3924 // announce_latest && deliver_last_raa case, we should have 5-4=1 and 4-2=2
3925 // PaymentFailureNetworkUpdates.
3926 let as_msg_events = nodes[0].node.get_and_clear_pending_msg_events();
3927 assert_eq!(as_msg_events.len(), if deliver_last_raa { 1 } else if !announce_latest { 3 } else { 5 });
3928 let bs_msg_events = nodes[1].node.get_and_clear_pending_msg_events();
3929 assert_eq!(bs_msg_events.len(), if deliver_last_raa { 2 } else if !announce_latest { 3 } else { 4 });
3930 for event in as_msg_events.iter().chain(bs_msg_events.iter()) {
3932 &MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
3933 _ => panic!("Unexpected event"),
3939 fn test_fail_backwards_latest_remote_announce_a() {
3940 do_test_fail_backwards_unrevoked_remote_announce(false, true);
3944 fn test_fail_backwards_latest_remote_announce_b() {
3945 do_test_fail_backwards_unrevoked_remote_announce(true, true);
3949 fn test_fail_backwards_previous_remote_announce() {
3950 do_test_fail_backwards_unrevoked_remote_announce(false, false);
3951 // Note that true, true doesn't make sense as it implies we announce a revoked state, which is
3952 // tested for in test_commitment_revoked_fail_backward_exhaustive()
3956 fn test_dynamic_spendable_outputs_local_htlc_timeout_tx() {
3957 let nodes = create_network(2);
3959 // Create some initial channels
3960 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1);
3962 route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000).0;
3963 let local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone();
3964 assert_eq!(local_txn[0].input.len(), 1);
3965 check_spends!(local_txn[0], chan_1.3.clone());
3967 // Timeout HTLC on A's chain and so it can generate a HTLC-Timeout tx
3968 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3969 nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![local_txn[0].clone()] }, 200);
3970 check_closed_broadcast!(nodes[0]);
3972 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
3973 assert_eq!(node_txn[0].input.len(), 1);
3974 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
3975 check_spends!(node_txn[0], local_txn[0].clone());
3977 // Verify that A is able to spend its own HTLC-Timeout tx thanks to spendable output event given back by its ChannelMonitor
3978 let spend_txn = check_spendable_outputs!(nodes[0], 1);
3979 assert_eq!(spend_txn.len(), 8);
3980 assert_eq!(spend_txn[0], spend_txn[2]);
3981 assert_eq!(spend_txn[0], spend_txn[4]);
3982 assert_eq!(spend_txn[0], spend_txn[6]);
3983 assert_eq!(spend_txn[1], spend_txn[3]);
3984 assert_eq!(spend_txn[1], spend_txn[5]);
3985 assert_eq!(spend_txn[1], spend_txn[7]);
3986 check_spends!(spend_txn[0], local_txn[0].clone());
3987 check_spends!(spend_txn[1], node_txn[0].clone());
3991 fn test_static_output_closing_tx() {
3992 let nodes = create_network(2);
3994 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
3996 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000);
3997 let closing_tx = close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true).2;
3999 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4000 nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![closing_tx.clone()] }, 1);
4001 let spend_txn = check_spendable_outputs!(nodes[0], 2);
4002 assert_eq!(spend_txn.len(), 1);
4003 check_spends!(spend_txn[0], closing_tx.clone());
4005 nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![closing_tx.clone()] }, 1);
4006 let spend_txn = check_spendable_outputs!(nodes[1], 2);
4007 assert_eq!(spend_txn.len(), 1);
4008 check_spends!(spend_txn[0], closing_tx);
4011 fn do_htlc_claim_local_commitment_only(use_dust: bool) {
4012 let nodes = create_network(2);
4013 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
4015 let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1]], if use_dust { 50000 } else { 3000000 });
4017 // Claim the payment, but don't deliver A's commitment_signed, resulting in the HTLC only being
4018 // present in B's local commitment transaction, but none of A's commitment transactions.
4019 assert!(nodes[1].node.claim_funds(our_payment_preimage));
4020 check_added_monitors!(nodes[1], 1);
4022 let bs_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
4023 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.update_fulfill_htlcs[0]).unwrap();
4024 let events = nodes[0].node.get_and_clear_pending_events();
4025 assert_eq!(events.len(), 1);
4027 Event::PaymentSent { payment_preimage } => {
4028 assert_eq!(payment_preimage, our_payment_preimage);
4030 _ => panic!("Unexpected event"),
4033 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_updates.commitment_signed).unwrap();
4034 check_added_monitors!(nodes[0], 1);
4035 let as_updates = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
4036 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_updates.0).unwrap();
4037 check_added_monitors!(nodes[1], 1);
4039 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4040 for i in 1..TEST_FINAL_CLTV - CLTV_CLAIM_BUFFER + CHAN_CONFIRM_DEPTH + 1 {
4041 nodes[1].chain_monitor.block_connected_checked(&header, i, &Vec::new(), &Vec::new());
4042 header.prev_blockhash = header.bitcoin_hash();
4044 test_txn_broadcast(&nodes[1], &chan, None, if use_dust { HTLCType::NONE } else { HTLCType::SUCCESS });
4045 check_closed_broadcast!(nodes[1]);
4048 fn do_htlc_claim_current_remote_commitment_only(use_dust: bool) {
4049 let mut nodes = create_network(2);
4050 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
4052 let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &Vec::new(), if use_dust { 50000 } else { 3000000 }, TEST_FINAL_CLTV).unwrap();
4053 let (_, payment_hash) = get_payment_preimage_hash!(nodes[0]);
4054 nodes[0].node.send_payment(route, payment_hash).unwrap();
4055 check_added_monitors!(nodes[0], 1);
4057 let _as_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
4059 // As far as A is concerened, the HTLC is now present only in the latest remote commitment
4060 // transaction, however it is not in A's latest local commitment, so we can just broadcast that
4061 // to "time out" the HTLC.
4063 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4064 for i in 1..TEST_FINAL_CLTV + HTLC_FAIL_TIMEOUT_BLOCKS + CHAN_CONFIRM_DEPTH + 1 {
4065 nodes[0].chain_monitor.block_connected_checked(&header, i, &Vec::new(), &Vec::new());
4066 header.prev_blockhash = header.bitcoin_hash();
4068 test_txn_broadcast(&nodes[0], &chan, None, HTLCType::NONE);
4069 check_closed_broadcast!(nodes[0]);
4072 fn do_htlc_claim_previous_remote_commitment_only(use_dust: bool, check_revoke_no_close: bool) {
4073 let nodes = create_network(3);
4074 let chan = create_announced_chan_between_nodes(&nodes, 0, 1);
4076 // Fail the payment, but don't deliver A's final RAA, resulting in the HTLC only being present
4077 // in B's previous (unrevoked) commitment transaction, but none of A's commitment transactions.
4078 // Also optionally test that we *don't* fail the channel in case the commitment transaction was
4079 // actually revoked.
4080 let htlc_value = if use_dust { 50000 } else { 3000000 };
4081 let (_, our_payment_hash) = route_payment(&nodes[0], &[&nodes[1]], htlc_value);
4082 assert!(nodes[1].node.fail_htlc_backwards(&our_payment_hash, htlc_value));
4083 expect_pending_htlcs_forwardable!(nodes[1]);
4084 check_added_monitors!(nodes[1], 1);
4086 let bs_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
4087 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.update_fail_htlcs[0]).unwrap();
4088 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_updates.commitment_signed).unwrap();
4089 check_added_monitors!(nodes[0], 1);
4090 let as_updates = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
4091 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_updates.0).unwrap();
4092 check_added_monitors!(nodes[1], 1);
4093 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_updates.1).unwrap();
4094 check_added_monitors!(nodes[1], 1);
4095 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
4097 if check_revoke_no_close {
4098 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack).unwrap();
4099 check_added_monitors!(nodes[0], 1);
4102 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4103 for i in 1..TEST_FINAL_CLTV + HTLC_FAIL_TIMEOUT_BLOCKS + CHAN_CONFIRM_DEPTH + 1 {
4104 nodes[0].chain_monitor.block_connected_checked(&header, i, &Vec::new(), &Vec::new());
4105 header.prev_blockhash = header.bitcoin_hash();
4107 if !check_revoke_no_close {
4108 test_txn_broadcast(&nodes[0], &chan, None, HTLCType::NONE);
4109 check_closed_broadcast!(nodes[0]);
4111 let events = nodes[0].node.get_and_clear_pending_events();
4112 assert_eq!(events.len(), 1);
4114 Event::PaymentFailed { payment_hash, rejected_by_dest, .. } => {
4115 assert_eq!(payment_hash, our_payment_hash);
4116 assert!(rejected_by_dest);
4118 _ => panic!("Unexpected event"),
4123 // Test that we close channels on-chain when broadcastable HTLCs reach their timeout window.
4124 // There are only a few cases to test here:
4125 // * its not really normative behavior, but we test that below-dust HTLCs "included" in
4126 // broadcastable commitment transactions result in channel closure,
4127 // * its included in an unrevoked-but-previous remote commitment transaction,
4128 // * its included in the latest remote or local commitment transactions.
4129 // We test each of the three possible commitment transactions individually and use both dust and
4131 // Note that we don't bother testing both outbound and inbound HTLC failures for each case, and we
4132 // assume they are handled the same across all six cases, as both outbound and inbound failures are
4133 // tested for at least one of the cases in other tests.
4135 fn htlc_claim_single_commitment_only_a() {
4136 do_htlc_claim_local_commitment_only(true);
4137 do_htlc_claim_local_commitment_only(false);
4139 do_htlc_claim_current_remote_commitment_only(true);
4140 do_htlc_claim_current_remote_commitment_only(false);
4144 fn htlc_claim_single_commitment_only_b() {
4145 do_htlc_claim_previous_remote_commitment_only(true, false);
4146 do_htlc_claim_previous_remote_commitment_only(false, false);
4147 do_htlc_claim_previous_remote_commitment_only(true, true);
4148 do_htlc_claim_previous_remote_commitment_only(false, true);
4151 fn run_onion_failure_test<F1,F2>(_name: &str, test_case: u8, nodes: &Vec<Node>, route: &Route, payment_hash: &PaymentHash, callback_msg: F1, callback_node: F2, expected_retryable: bool, expected_error_code: Option<u16>, expected_channel_update: Option<HTLCFailChannelUpdate>)
4152 where F1: for <'a> FnMut(&'a mut msgs::UpdateAddHTLC),
4155 run_onion_failure_test_with_fail_intercept(_name, test_case, nodes, route, payment_hash, callback_msg, |_|{}, callback_node, expected_retryable, expected_error_code, expected_channel_update);
4159 // 0: node1 fail backward
4160 // 1: final node fail backward
4161 // 2: payment completed but the user reject the payment
4162 // 3: final node fail backward (but tamper onion payloads from node0)
4163 // 100: trigger error in the intermediate node and tamper returnning fail_htlc
4164 // 200: trigger error in the final node and tamper returnning fail_htlc
4165 fn run_onion_failure_test_with_fail_intercept<F1,F2,F3>(_name: &str, test_case: u8, nodes: &Vec<Node>, route: &Route, payment_hash: &PaymentHash, mut callback_msg: F1, mut callback_fail: F2, mut callback_node: F3, expected_retryable: bool, expected_error_code: Option<u16>, expected_channel_update: Option<HTLCFailChannelUpdate>)
4166 where F1: for <'a> FnMut(&'a mut msgs::UpdateAddHTLC),
4167 F2: for <'a> FnMut(&'a mut msgs::UpdateFailHTLC),
4170 use ln::msgs::HTLCFailChannelUpdate;
4172 // reset block height
4173 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4174 for ix in 0..nodes.len() {
4175 nodes[ix].chain_monitor.block_connected_checked(&header, 1, &Vec::new()[..], &[0; 0]);
4178 macro_rules! expect_event {
4179 ($node: expr, $event_type: path) => {{
4180 let events = $node.node.get_and_clear_pending_events();
4181 assert_eq!(events.len(), 1);
4183 $event_type { .. } => {},
4184 _ => panic!("Unexpected event"),
4189 macro_rules! expect_htlc_forward {
4191 expect_event!($node, Event::PendingHTLCsForwardable);
4192 $node.node.channel_state.lock().unwrap().next_forward = Instant::now();
4193 $node.node.process_pending_htlc_forwards();
4197 // 0 ~~> 2 send payment
4198 nodes[0].node.send_payment(route.clone(), payment_hash.clone()).unwrap();
4199 check_added_monitors!(nodes[0], 1);
4200 let update_0 = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
4201 // temper update_add (0 => 1)
4202 let mut update_add_0 = update_0.update_add_htlcs[0].clone();
4203 if test_case == 0 || test_case == 3 || test_case == 100 {
4204 callback_msg(&mut update_add_0);
4207 // 0 => 1 update_add & CS
4208 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &update_add_0).unwrap();
4209 commitment_signed_dance!(nodes[1], nodes[0], &update_0.commitment_signed, false, true);
4211 let update_1_0 = match test_case {
4212 0|100 => { // intermediate node failure; fail backward to 0
4213 let update_1_0 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
4214 assert!(update_1_0.update_fail_htlcs.len()+update_1_0.update_fail_malformed_htlcs.len()==1 && (update_1_0.update_fail_htlcs.len()==1 || update_1_0.update_fail_malformed_htlcs.len()==1));
4217 1|2|3|200 => { // final node failure; forwarding to 2
4218 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
4220 if test_case != 200 {
4223 expect_htlc_forward!(&nodes[1]);
4225 let update_1 = get_htlc_update_msgs!(nodes[1], nodes[2].node.get_our_node_id());
4226 check_added_monitors!(&nodes[1], 1);
4227 assert_eq!(update_1.update_add_htlcs.len(), 1);
4228 // tamper update_add (1 => 2)
4229 let mut update_add_1 = update_1.update_add_htlcs[0].clone();
4230 if test_case != 3 && test_case != 200 {
4231 callback_msg(&mut update_add_1);
4235 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &update_add_1).unwrap();
4236 commitment_signed_dance!(nodes[2], nodes[1], update_1.commitment_signed, false, true);
4238 if test_case == 2 || test_case == 200 {
4239 expect_htlc_forward!(&nodes[2]);
4240 expect_event!(&nodes[2], Event::PaymentReceived);
4242 expect_pending_htlcs_forwardable!(nodes[2]);
4245 let update_2_1 = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
4246 if test_case == 2 || test_case == 200 {
4247 check_added_monitors!(&nodes[2], 1);
4249 assert!(update_2_1.update_fail_htlcs.len() == 1);
4251 let mut fail_msg = update_2_1.update_fail_htlcs[0].clone();
4252 if test_case == 200 {
4253 callback_fail(&mut fail_msg);
4257 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &fail_msg).unwrap();
4258 commitment_signed_dance!(nodes[1], nodes[2], update_2_1.commitment_signed, true);
4260 // backward fail on 1
4261 let update_1_0 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
4262 assert!(update_1_0.update_fail_htlcs.len() == 1);
4265 _ => unreachable!(),
4268 // 1 => 0 commitment_signed_dance
4269 if update_1_0.update_fail_htlcs.len() > 0 {
4270 let mut fail_msg = update_1_0.update_fail_htlcs[0].clone();
4271 if test_case == 100 {
4272 callback_fail(&mut fail_msg);
4274 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &fail_msg).unwrap();
4276 nodes[0].node.handle_update_fail_malformed_htlc(&nodes[1].node.get_our_node_id(), &update_1_0.update_fail_malformed_htlcs[0]).unwrap();
4279 commitment_signed_dance!(nodes[0], nodes[1], update_1_0.commitment_signed, false, true);
4281 let events = nodes[0].node.get_and_clear_pending_events();
4282 assert_eq!(events.len(), 1);
4283 if let &Event::PaymentFailed { payment_hash:_, ref rejected_by_dest, ref error_code } = &events[0] {
4284 assert_eq!(*rejected_by_dest, !expected_retryable);
4285 assert_eq!(*error_code, expected_error_code);
4287 panic!("Uexpected event");
4290 let events = nodes[0].node.get_and_clear_pending_msg_events();
4291 if expected_channel_update.is_some() {
4292 assert_eq!(events.len(), 1);
4294 MessageSendEvent::PaymentFailureNetworkUpdate { ref update } => {
4296 &HTLCFailChannelUpdate::ChannelUpdateMessage { .. } => {
4297 if let HTLCFailChannelUpdate::ChannelUpdateMessage { .. } = expected_channel_update.unwrap() {} else {
4298 panic!("channel_update not found!");
4301 &HTLCFailChannelUpdate::ChannelClosed { ref short_channel_id, ref is_permanent } => {
4302 if let HTLCFailChannelUpdate::ChannelClosed { short_channel_id: ref expected_short_channel_id, is_permanent: ref expected_is_permanent } = expected_channel_update.unwrap() {
4303 assert!(*short_channel_id == *expected_short_channel_id);
4304 assert!(*is_permanent == *expected_is_permanent);
4306 panic!("Unexpected message event");
4309 &HTLCFailChannelUpdate::NodeFailure { ref node_id, ref is_permanent } => {
4310 if let HTLCFailChannelUpdate::NodeFailure { node_id: ref expected_node_id, is_permanent: ref expected_is_permanent } = expected_channel_update.unwrap() {
4311 assert!(*node_id == *expected_node_id);
4312 assert!(*is_permanent == *expected_is_permanent);
4314 panic!("Unexpected message event");
4319 _ => panic!("Unexpected message event"),
4322 assert_eq!(events.len(), 0);
4326 impl msgs::ChannelUpdate {
4327 fn dummy() -> msgs::ChannelUpdate {
4328 use secp256k1::ffi::Signature as FFISignature;
4329 use secp256k1::Signature;
4330 msgs::ChannelUpdate {
4331 signature: Signature::from(FFISignature::new()),
4332 contents: msgs::UnsignedChannelUpdate {
4333 chain_hash: Sha256dHash::from_data(&vec![0u8][..]),
4334 short_channel_id: 0,
4337 cltv_expiry_delta: 0,
4338 htlc_minimum_msat: 0,
4340 fee_proportional_millionths: 0,
4341 excess_data: vec![],
4348 fn test_onion_failure() {
4349 use ln::msgs::ChannelUpdate;
4350 use ln::channelmanager::CLTV_FAR_FAR_AWAY;
4353 const BADONION: u16 = 0x8000;
4354 const PERM: u16 = 0x4000;
4355 const NODE: u16 = 0x2000;
4356 const UPDATE: u16 = 0x1000;
4358 let mut nodes = create_network(3);
4359 for node in nodes.iter() {
4360 *node.keys_manager.override_session_priv.lock().unwrap() = Some(SecretKey::from_slice(&[3; 32]).unwrap());
4362 let channels = [create_announced_chan_between_nodes(&nodes, 0, 1), create_announced_chan_between_nodes(&nodes, 1, 2)];
4363 let (_, payment_hash) = get_payment_preimage_hash!(nodes[0]);
4364 let route = nodes[0].router.get_route(&nodes[2].node.get_our_node_id(), None, &Vec::new(), 40000, TEST_FINAL_CLTV).unwrap();
4366 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 40000);
4368 // intermediate node failure
4369 run_onion_failure_test("invalid_realm", 0, &nodes, &route, &payment_hash, |msg| {
4370 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
4371 let cur_height = nodes[0].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
4372 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap();
4373 let (mut onion_payloads, _htlc_msat, _htlc_cltv) = onion_utils::build_onion_payloads(&route, cur_height).unwrap();
4374 onion_payloads[0].realm = 3;
4375 msg.onion_routing_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, &payment_hash);
4376 }, ||{}, true, Some(PERM|1), Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: channels[1].0.contents.short_channel_id, is_permanent: true}));//XXX incremented channels idx here
4378 // final node failure
4379 run_onion_failure_test("invalid_realm", 3, &nodes, &route, &payment_hash, |msg| {
4380 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
4381 let cur_height = nodes[0].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
4382 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap();
4383 let (mut onion_payloads, _htlc_msat, _htlc_cltv) = onion_utils::build_onion_payloads(&route, cur_height).unwrap();
4384 onion_payloads[1].realm = 3;
4385 msg.onion_routing_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, &payment_hash);
4386 }, ||{}, false, Some(PERM|1), Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: channels[1].0.contents.short_channel_id, is_permanent: true}));
4388 // the following three with run_onion_failure_test_with_fail_intercept() test only the origin node
4389 // receiving simulated fail messages
4390 // intermediate node failure
4391 run_onion_failure_test_with_fail_intercept("temporary_node_failure", 100, &nodes, &route, &payment_hash, |msg| {
4393 msg.amount_msat -= 1;
4395 // and tamper returing error message
4396 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
4397 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap();
4398 msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], NODE|2, &[0;0]);
4399 }, ||{}, true, Some(NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.hops[0].pubkey, is_permanent: false}));
4401 // final node failure
4402 run_onion_failure_test_with_fail_intercept("temporary_node_failure", 200, &nodes, &route, &payment_hash, |_msg| {}, |msg| {
4403 // and tamper returing error message
4404 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
4405 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap();
4406 msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[1].shared_secret[..], NODE|2, &[0;0]);
4408 nodes[2].node.fail_htlc_backwards(&payment_hash, 0);
4409 }, true, Some(NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.hops[1].pubkey, is_permanent: false}));
4411 // intermediate node failure
4412 run_onion_failure_test_with_fail_intercept("permanent_node_failure", 100, &nodes, &route, &payment_hash, |msg| {
4413 msg.amount_msat -= 1;
4415 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
4416 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap();
4417 msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], PERM|NODE|2, &[0;0]);
4418 }, ||{}, true, Some(PERM|NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.hops[0].pubkey, is_permanent: true}));
4420 // final node failure
4421 run_onion_failure_test_with_fail_intercept("permanent_node_failure", 200, &nodes, &route, &payment_hash, |_msg| {}, |msg| {
4422 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
4423 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap();
4424 msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[1].shared_secret[..], PERM|NODE|2, &[0;0]);
4426 nodes[2].node.fail_htlc_backwards(&payment_hash, 0);
4427 }, false, Some(PERM|NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.hops[1].pubkey, is_permanent: true}));
4429 // intermediate node failure
4430 run_onion_failure_test_with_fail_intercept("required_node_feature_missing", 100, &nodes, &route, &payment_hash, |msg| {
4431 msg.amount_msat -= 1;
4433 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
4434 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap();
4435 msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], PERM|NODE|3, &[0;0]);
4437 nodes[2].node.fail_htlc_backwards(&payment_hash, 0);
4438 }, true, Some(PERM|NODE|3), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.hops[0].pubkey, is_permanent: true}));
4440 // final node failure
4441 run_onion_failure_test_with_fail_intercept("required_node_feature_missing", 200, &nodes, &route, &payment_hash, |_msg| {}, |msg| {
4442 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
4443 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap();
4444 msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[1].shared_secret[..], PERM|NODE|3, &[0;0]);
4446 nodes[2].node.fail_htlc_backwards(&payment_hash, 0);
4447 }, false, Some(PERM|NODE|3), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.hops[1].pubkey, is_permanent: true}));
4449 run_onion_failure_test("invalid_onion_version", 0, &nodes, &route, &payment_hash, |msg| { msg.onion_routing_packet.version = 1; }, ||{}, true,
4450 Some(BADONION|PERM|4), None);
4452 run_onion_failure_test("invalid_onion_hmac", 0, &nodes, &route, &payment_hash, |msg| { msg.onion_routing_packet.hmac = [3; 32]; }, ||{}, true,
4453 Some(BADONION|PERM|5), None);
4455 run_onion_failure_test("invalid_onion_key", 0, &nodes, &route, &payment_hash, |msg| { msg.onion_routing_packet.public_key = Err(secp256k1::Error::InvalidPublicKey);}, ||{}, true,
4456 Some(BADONION|PERM|6), None);
4458 run_onion_failure_test_with_fail_intercept("temporary_channel_failure", 100, &nodes, &route, &payment_hash, |msg| {
4459 msg.amount_msat -= 1;
4461 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
4462 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap();
4463 msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], UPDATE|7, &ChannelUpdate::dummy().encode_with_len()[..]);
4464 }, ||{}, true, Some(UPDATE|7), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()}));
4466 run_onion_failure_test_with_fail_intercept("permanent_channel_failure", 100, &nodes, &route, &payment_hash, |msg| {
4467 msg.amount_msat -= 1;
4469 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
4470 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap();
4471 msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], PERM|8, &[0;0]);
4472 // short_channel_id from the processing node
4473 }, ||{}, true, Some(PERM|8), Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: channels[1].0.contents.short_channel_id, is_permanent: true}));
4475 run_onion_failure_test_with_fail_intercept("required_channel_feature_missing", 100, &nodes, &route, &payment_hash, |msg| {
4476 msg.amount_msat -= 1;
4478 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
4479 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap();
4480 msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], PERM|9, &[0;0]);
4481 // short_channel_id from the processing node
4482 }, ||{}, true, Some(PERM|9), Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: channels[1].0.contents.short_channel_id, is_permanent: true}));
4484 let mut bogus_route = route.clone();
4485 bogus_route.hops[1].short_channel_id -= 1;
4486 run_onion_failure_test("unknown_next_peer", 0, &nodes, &bogus_route, &payment_hash, |_| {}, ||{}, true, Some(PERM|10),
4487 Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: bogus_route.hops[1].short_channel_id, is_permanent:true}));
4489 let amt_to_forward = nodes[1].node.channel_state.lock().unwrap().by_id.get(&channels[1].2).unwrap().get_their_htlc_minimum_msat() - 1;
4490 let mut bogus_route = route.clone();
4491 let route_len = bogus_route.hops.len();
4492 bogus_route.hops[route_len-1].fee_msat = amt_to_forward;
4493 run_onion_failure_test("amount_below_minimum", 0, &nodes, &bogus_route, &payment_hash, |_| {}, ||{}, true, Some(UPDATE|11), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()}));
4495 //TODO: with new config API, we will be able to generate both valid and
4496 //invalid channel_update cases.
4497 run_onion_failure_test("fee_insufficient", 0, &nodes, &route, &payment_hash, |msg| {
4498 msg.amount_msat -= 1;
4499 }, || {}, true, Some(UPDATE|12), Some(msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id: channels[0].0.contents.short_channel_id, is_permanent: true}));
4501 run_onion_failure_test("incorrect_cltv_expiry", 0, &nodes, &route, &payment_hash, |msg| {
4502 // need to violate: cltv_expiry - cltv_expiry_delta >= outgoing_cltv_value
4503 msg.cltv_expiry -= 1;
4504 }, || {}, true, Some(UPDATE|13), Some(msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id: channels[0].0.contents.short_channel_id, is_permanent: true}));
4506 run_onion_failure_test("expiry_too_soon", 0, &nodes, &route, &payment_hash, |msg| {
4507 let height = msg.cltv_expiry - CLTV_CLAIM_BUFFER - HTLC_FAIL_TIMEOUT_BLOCKS + 1;
4508 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4509 nodes[1].chain_monitor.block_connected_checked(&header, height, &Vec::new()[..], &[0; 0]);
4510 }, ||{}, true, Some(UPDATE|14), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()}));
4512 run_onion_failure_test("unknown_payment_hash", 2, &nodes, &route, &payment_hash, |_| {}, || {
4513 nodes[2].node.fail_htlc_backwards(&payment_hash, 0);
4514 }, false, Some(PERM|15), None);
4516 run_onion_failure_test("final_expiry_too_soon", 1, &nodes, &route, &payment_hash, |msg| {
4517 let height = msg.cltv_expiry - CLTV_CLAIM_BUFFER - HTLC_FAIL_TIMEOUT_BLOCKS + 1;
4518 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4519 nodes[2].chain_monitor.block_connected_checked(&header, height, &Vec::new()[..], &[0; 0]);
4520 }, || {}, true, Some(17), None);
4522 run_onion_failure_test("final_incorrect_cltv_expiry", 1, &nodes, &route, &payment_hash, |_| {}, || {
4523 for (_, pending_forwards) in nodes[1].node.channel_state.lock().unwrap().borrow_parts().forward_htlcs.iter_mut() {
4524 for f in pending_forwards.iter_mut() {
4526 &mut HTLCForwardInfo::AddHTLC { ref mut forward_info, .. } =>
4527 forward_info.outgoing_cltv_value += 1,
4532 }, true, Some(18), None);
4534 run_onion_failure_test("final_incorrect_htlc_amount", 1, &nodes, &route, &payment_hash, |_| {}, || {
4535 // violate amt_to_forward > msg.amount_msat
4536 for (_, pending_forwards) in nodes[1].node.channel_state.lock().unwrap().borrow_parts().forward_htlcs.iter_mut() {
4537 for f in pending_forwards.iter_mut() {
4539 &mut HTLCForwardInfo::AddHTLC { ref mut forward_info, .. } =>
4540 forward_info.amt_to_forward -= 1,
4545 }, true, Some(19), None);
4547 run_onion_failure_test("channel_disabled", 0, &nodes, &route, &payment_hash, |_| {}, || {
4548 // disconnect event to the channel between nodes[1] ~ nodes[2]
4549 nodes[1].node.peer_disconnected(&nodes[2].node.get_our_node_id(), false);
4550 nodes[2].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
4551 }, true, Some(UPDATE|20), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()}));
4552 reconnect_nodes(&nodes[1], &nodes[2], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
4554 run_onion_failure_test("expiry_too_far", 0, &nodes, &route, &payment_hash, |msg| {
4555 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
4556 let mut route = route.clone();
4558 route.hops[1].cltv_expiry_delta += CLTV_FAR_FAR_AWAY + route.hops[0].cltv_expiry_delta + 1;
4559 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap();
4560 let (onion_payloads, _, htlc_cltv) = onion_utils::build_onion_payloads(&route, height).unwrap();
4561 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, &payment_hash);
4562 msg.cltv_expiry = htlc_cltv;
4563 msg.onion_routing_packet = onion_packet;
4564 }, ||{}, true, Some(21), None);
4569 fn bolt2_open_channel_sending_node_checks_part1() { //This test needs to be on its own as we are catching a panic
4570 let nodes = create_network(2);
4571 //Force duplicate channel ids
4572 for node in nodes.iter() {
4573 *node.keys_manager.override_channel_id_priv.lock().unwrap() = Some([0; 32]);
4576 // BOLT #2 spec: Sending node must ensure temporary_channel_id is unique from any other channel ID with the same peer.
4577 let channel_value_satoshis=10000;
4578 let push_msat=10001;
4579 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42).unwrap();
4580 let node0_to_1_send_open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
4581 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), &node0_to_1_send_open_channel).unwrap();
4583 //Create a second channel with a channel_id collision
4584 assert!(nodes[0].node.create_channel(nodes[0].node.get_our_node_id(), channel_value_satoshis, push_msat, 42).is_err());
4588 fn bolt2_open_channel_sending_node_checks_part2() {
4589 let nodes = create_network(2);
4591 // BOLT #2 spec: Sending node must set funding_satoshis to less than 2^24 satoshis
4592 let channel_value_satoshis=2^24;
4593 let push_msat=10001;
4594 assert!(nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42).is_err());
4596 // BOLT #2 spec: Sending node must set push_msat to equal or less than 1000 * funding_satoshis
4597 let channel_value_satoshis=10000;
4598 // Test when push_msat is equal to 1000 * funding_satoshis.
4599 let push_msat=1000*channel_value_satoshis+1;
4600 assert!(nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42).is_err());
4602 // BOLT #2 spec: Sending node must set set channel_reserve_satoshis greater than or equal to dust_limit_satoshis
4603 let channel_value_satoshis=10000;
4604 let push_msat=10001;
4605 assert!(nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42).is_ok()); //Create a valid channel
4606 let node0_to_1_send_open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
4607 assert!(node0_to_1_send_open_channel.channel_reserve_satoshis>=node0_to_1_send_open_channel.dust_limit_satoshis);
4609 // BOLT #2 spec: Sending node must set undefined bits in channel_flags to 0
4610 // Only the least-significant bit of channel_flags is currently defined resulting in channel_flags only having one of two possible states 0 or 1
4611 assert!(node0_to_1_send_open_channel.channel_flags<=1);
4613 // BOLT #2 spec: Sending node should set to_self_delay sufficient to ensure the sender can irreversibly spend a commitment transaction output, in case of misbehaviour by the receiver.
4614 assert!(BREAKDOWN_TIMEOUT>0);
4615 assert!(node0_to_1_send_open_channel.to_self_delay==BREAKDOWN_TIMEOUT);
4617 // BOLT #2 spec: Sending node must ensure the chain_hash value identifies the chain it wishes to open the channel within.
4618 let chain_hash=genesis_block(Network::Testnet).header.bitcoin_hash();
4619 assert_eq!(node0_to_1_send_open_channel.chain_hash,chain_hash);
4621 // BOLT #2 spec: Sending node must set funding_pubkey, revocation_basepoint, htlc_basepoint, payment_basepoint, and delayed_payment_basepoint to valid DER-encoded, compressed, secp256k1 pubkeys.
4622 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.funding_pubkey.serialize()).is_ok());
4623 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.revocation_basepoint.serialize()).is_ok());
4624 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.htlc_basepoint.serialize()).is_ok());
4625 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.payment_basepoint.serialize()).is_ok());
4626 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.delayed_payment_basepoint.serialize()).is_ok());
4629 // BOLT 2 Requirements for the Sender when constructing and sending an update_add_htlc message.
4630 // BOLT 2 Requirement: MUST NOT offer amount_msat it cannot pay for in the remote commitment transaction at the current feerate_per_kw (see "Updating Fees") while maintaining its channel reserve.
4631 //TODO: I don't believe this is explicitly enforced when sending an HTLC but as the Fee aspect of the BOLT specs is in flux leaving this as a TODO.
4634 fn test_update_add_htlc_bolt2_sender_value_below_minimum_msat() {
4635 //BOLT2 Requirement: MUST offer amount_msat greater than 0.
4636 //BOLT2 Requirement: MUST NOT offer amount_msat below the receiving node's htlc_minimum_msat (same validation check catches both of these)
4637 let mut nodes = create_network(2);
4638 let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000);
4639 let mut route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV).unwrap();
4640 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
4642 route.hops[0].fee_msat = 0;
4644 let err = nodes[0].node.send_payment(route, our_payment_hash);
4646 if let Err(APIError::ChannelUnavailable{err}) = err {
4647 assert_eq!(err, "Cannot send less than their minimum HTLC value");
4654 fn test_update_add_htlc_bolt2_sender_cltv_expiry_too_high() {
4655 //BOLT 2 Requirement: MUST set cltv_expiry less than 500000000.
4656 //It is enforced when constructing a route.
4657 let mut nodes = create_network(2);
4658 let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 0);
4659 let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &[], 100000000, 500000001).unwrap();
4660 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
4662 let err = nodes[0].node.send_payment(route, our_payment_hash);
4664 if let Err(APIError::RouteError{err}) = err {
4665 assert_eq!(err, "Channel CLTV overflowed?!");
4672 fn test_update_add_htlc_bolt2_sender_exceed_max_htlc_num_and_htlc_id_increment() {
4673 //BOLT 2 Requirement: if result would be offering more than the remote's max_accepted_htlcs HTLCs, in the remote commitment transaction: MUST NOT add an HTLC.
4674 //BOLT 2 Requirement: for the first HTLC it offers MUST set id to 0.
4675 //BOLT 2 Requirement: MUST increase the value of id by 1 for each successive offer.
4676 let mut nodes = create_network(2);
4677 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 0);
4678 let max_accepted_htlcs = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().their_max_accepted_htlcs as u64;
4680 for i in 0..max_accepted_htlcs {
4681 let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV).unwrap();
4682 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
4683 let mut payment_event = {
4684 nodes[0].node.send_payment(route, our_payment_hash).unwrap();
4685 check_added_monitors!(nodes[0], 1);
4687 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
4688 assert_eq!(events.len(), 1);
4689 if let MessageSendEvent::UpdateHTLCs { node_id: _, updates: msgs::CommitmentUpdate{ update_add_htlcs: ref htlcs, .. }, } = events[0] {
4690 assert_eq!(htlcs[0].htlc_id, i);
4694 SendEvent::from_event(events.remove(0))
4696 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]).unwrap();
4697 check_added_monitors!(nodes[1], 0);
4698 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
4700 expect_pending_htlcs_forwardable!(nodes[1]);
4701 expect_payment_received!(nodes[1], our_payment_hash, 100000);
4703 let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV).unwrap();
4704 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
4705 let err = nodes[0].node.send_payment(route, our_payment_hash);
4707 if let Err(APIError::ChannelUnavailable{err}) = err {
4708 assert_eq!(err, "Cannot push more than their max accepted HTLCs");
4715 fn test_update_add_htlc_bolt2_sender_exceed_max_htlc_value_in_flight() {
4716 //BOLT 2 Requirement: if the sum of total offered HTLCs would exceed the remote's max_htlc_value_in_flight_msat: MUST NOT add an HTLC.
4717 let mut nodes = create_network(2);
4718 let channel_value = 100000;
4719 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, channel_value, 0);
4720 let max_in_flight = get_channel_value_stat!(nodes[0], chan.2).their_max_htlc_value_in_flight_msat;
4722 send_payment(&nodes[0], &vec!(&nodes[1])[..], max_in_flight);
4724 let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &[], max_in_flight+1, TEST_FINAL_CLTV).unwrap();
4725 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
4726 let err = nodes[0].node.send_payment(route, our_payment_hash);
4728 if let Err(APIError::ChannelUnavailable{err}) = err {
4729 assert_eq!(err, "Cannot send value that would put us over our max HTLC value in flight");
4734 send_payment(&nodes[0], &[&nodes[1]], max_in_flight);
4737 // BOLT 2 Requirements for the Receiver when handling an update_add_htlc message.
4739 fn test_update_add_htlc_bolt2_receiver_check_amount_received_more_than_min() {
4740 //BOLT2 Requirement: receiving an amount_msat equal to 0, OR less than its own htlc_minimum_msat -> SHOULD fail the channel.
4741 let mut nodes = create_network(2);
4742 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000);
4743 let htlc_minimum_msat: u64;
4745 let chan_lock = nodes[0].node.channel_state.lock().unwrap();
4746 let channel = chan_lock.by_id.get(&chan.2).unwrap();
4747 htlc_minimum_msat = channel.get_our_htlc_minimum_msat();
4749 let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &[], htlc_minimum_msat, TEST_FINAL_CLTV).unwrap();
4750 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
4751 nodes[0].node.send_payment(route, our_payment_hash).unwrap();
4752 check_added_monitors!(nodes[0], 1);
4753 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
4754 updates.update_add_htlcs[0].amount_msat = htlc_minimum_msat-1;
4755 let err = nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
4756 if let Err(msgs::HandleError{err, action: Some(msgs::ErrorAction::SendErrorMessage {..})}) = err {
4757 assert_eq!(err, "Remote side tried to send less than our minimum HTLC value");
4761 assert!(nodes[1].node.list_channels().is_empty());
4762 check_closed_broadcast!(nodes[1]);
4766 fn test_update_add_htlc_bolt2_receiver_sender_can_afford_amount_sent() {
4767 //BOLT2 Requirement: receiving an amount_msat that the sending node cannot afford at the current feerate_per_kw (while maintaining its channel reserve): SHOULD fail the channel
4768 let mut nodes = create_network(2);
4769 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000);
4771 let their_channel_reserve = get_channel_value_stat!(nodes[0], chan.2).channel_reserve_msat;
4773 let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &[], 5000000-their_channel_reserve, TEST_FINAL_CLTV).unwrap();
4774 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
4775 nodes[0].node.send_payment(route, our_payment_hash).unwrap();
4776 check_added_monitors!(nodes[0], 1);
4777 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
4779 updates.update_add_htlcs[0].amount_msat = 5000000-their_channel_reserve+1;
4780 let err = nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
4782 if let Err(msgs::HandleError{err, action: Some(msgs::ErrorAction::SendErrorMessage {..})}) = err {
4783 assert_eq!(err, "Remote HTLC add would put them over their reserve value");
4788 assert!(nodes[1].node.list_channels().is_empty());
4789 check_closed_broadcast!(nodes[1]);
4793 fn test_update_add_htlc_bolt2_receiver_check_max_htlc_limit() {
4794 //BOLT 2 Requirement: if a sending node adds more than its max_accepted_htlcs HTLCs to its local commitment transaction: SHOULD fail the channel
4795 //BOLT 2 Requirement: MUST allow multiple HTLCs with the same payment_hash.
4796 let mut nodes = create_network(2);
4797 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000);
4798 let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &[], 3999999, TEST_FINAL_CLTV).unwrap();
4799 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
4801 let session_priv = SecretKey::from_slice(&{
4802 let mut session_key = [0; 32];
4803 rng::fill_bytes(&mut session_key);
4805 }).expect("RNG is bad!");
4807 let cur_height = nodes[0].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
4808 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::signing_only(), &route, &session_priv).unwrap();
4809 let (onion_payloads, _htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route, cur_height).unwrap();
4810 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, &our_payment_hash);
4812 let mut msg = msgs::UpdateAddHTLC {
4816 payment_hash: our_payment_hash,
4817 cltv_expiry: htlc_cltv,
4818 onion_routing_packet: onion_packet.clone(),
4821 for i in 0..super::channel::OUR_MAX_HTLCS {
4822 msg.htlc_id = i as u64;
4823 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg).unwrap();
4825 msg.htlc_id = (super::channel::OUR_MAX_HTLCS) as u64;
4826 let err = nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg);
4828 if let Err(msgs::HandleError{err, action: Some(msgs::ErrorAction::SendErrorMessage {..})}) = err {
4829 assert_eq!(err, "Remote tried to push more than our max accepted HTLCs");
4834 assert!(nodes[1].node.list_channels().is_empty());
4835 check_closed_broadcast!(nodes[1]);
4839 fn test_update_add_htlc_bolt2_receiver_check_max_in_flight_msat() {
4840 //OR adds more than its max_htlc_value_in_flight_msat worth of offered HTLCs to its local commitment transaction: SHOULD fail the channel
4841 let mut nodes = create_network(2);
4842 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000);
4843 let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &[], 1000000, TEST_FINAL_CLTV).unwrap();
4844 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
4845 nodes[0].node.send_payment(route, our_payment_hash).unwrap();
4846 check_added_monitors!(nodes[0], 1);
4847 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
4848 updates.update_add_htlcs[0].amount_msat = get_channel_value_stat!(nodes[1], chan.2).their_max_htlc_value_in_flight_msat + 1;
4849 let err = nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
4851 if let Err(msgs::HandleError{err, action: Some(msgs::ErrorAction::SendErrorMessage {..})}) = err {
4852 assert_eq!(err,"Remote HTLC add would put them over their max HTLC value in flight");
4857 assert!(nodes[1].node.list_channels().is_empty());
4858 check_closed_broadcast!(nodes[1]);
4862 fn test_update_add_htlc_bolt2_receiver_check_cltv_expiry() {
4863 //BOLT2 Requirement: if sending node sets cltv_expiry to greater or equal to 500000000: SHOULD fail the channel.
4864 let mut nodes = create_network(2);
4865 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000);
4866 let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &[], 3999999, TEST_FINAL_CLTV).unwrap();
4867 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
4868 nodes[0].node.send_payment(route, our_payment_hash).unwrap();
4869 check_added_monitors!(nodes[0], 1);
4870 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
4871 updates.update_add_htlcs[0].cltv_expiry = 500000000;
4872 let err = nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
4874 if let Err(msgs::HandleError{err, action: Some(msgs::ErrorAction::SendErrorMessage {..})}) = err {
4875 assert_eq!(err,"Remote provided CLTV expiry in seconds instead of block height");
4880 assert!(nodes[1].node.list_channels().is_empty());
4881 check_closed_broadcast!(nodes[1]);
4885 fn test_update_add_htlc_bolt2_receiver_check_repeated_id_ignore() {
4886 //BOLT 2 requirement: if the sender did not previously acknowledge the commitment of that HTLC: MUST ignore a repeated id value after a reconnection.
4887 // We test this by first testing that that repeated HTLCs pass commitment signature checks
4888 // after disconnect and that non-sequential htlc_ids result in a channel failure.
4889 let mut nodes = create_network(2);
4890 create_announced_chan_between_nodes(&nodes, 0, 1);
4891 let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &[], 1000000, TEST_FINAL_CLTV).unwrap();
4892 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
4893 nodes[0].node.send_payment(route, our_payment_hash).unwrap();
4894 check_added_monitors!(nodes[0], 1);
4895 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
4896 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]).unwrap();
4898 //Disconnect and Reconnect
4899 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
4900 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4901 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id());
4902 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
4903 assert_eq!(reestablish_1.len(), 1);
4904 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id());
4905 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
4906 assert_eq!(reestablish_2.len(), 1);
4907 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]).unwrap();
4908 handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
4909 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]).unwrap();
4910 handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
4913 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]).unwrap();
4914 assert_eq!(updates.commitment_signed.htlc_signatures.len(), 1);
4915 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &updates.commitment_signed).unwrap();
4916 check_added_monitors!(nodes[1], 1);
4917 let _bs_responses = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
4919 let err = nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
4920 if let Err(msgs::HandleError{err, action: Some(msgs::ErrorAction::SendErrorMessage {..})}) = err {
4921 assert_eq!(err, "Remote skipped HTLC ID");
4926 assert!(nodes[1].node.list_channels().is_empty());
4927 check_closed_broadcast!(nodes[1]);