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::keysinterface::{ChannelKeys, KeysInterface, SpendableOutputDescriptor};
7 use chain::chaininterface;
8 use chain::chaininterface::{ChainListener, ChainWatchInterfaceUtil, BlockNotifier};
9 use ln::channel::{COMMITMENT_TX_BASE_WEIGHT, COMMITMENT_TX_WEIGHT_PER_HTLC};
10 use ln::channelmanager::{ChannelManager,ChannelManagerReadArgs,HTLCForwardInfo,RAACommitmentOrder, PaymentPreimage, PaymentHash, PaymentSecret, PaymentSendFailure, BREAKDOWN_TIMEOUT};
11 use ln::channelmonitor::{ChannelMonitor, CLTV_CLAIM_BUFFER, LATENCY_GRACE_PERIOD_BLOCKS, ManyChannelMonitor, ANTI_REORG_DELAY};
12 use ln::channelmonitor;
13 use ln::channel::{Channel, ChannelError};
14 use ln::{chan_utils, onion_utils};
15 use routing::router::{Route, RouteHop, get_route};
16 use ln::features::{ChannelFeatures, InitFeatures, NodeFeatures};
18 use ln::msgs::{ChannelMessageHandler,RoutingMessageHandler,HTLCFailChannelUpdate, ErrorAction, OptionalField};
19 use util::enforcing_trait_impls::EnforcingChannelKeys;
20 use util::{byte_utils, test_utils};
21 use util::events::{Event, EventsProvider, MessageSendEvent, MessageSendEventsProvider};
22 use util::errors::APIError;
23 use util::ser::{Writeable, Writer, ReadableArgs, Readable};
24 use util::config::UserConfig;
26 use bitcoin::util::hash::BitcoinHash;
27 use bitcoin::hashes::sha256d::Hash as Sha256dHash;
28 use bitcoin::hashes::HashEngine;
29 use bitcoin::hash_types::{Txid, BlockHash, WPubkeyHash};
30 use bitcoin::util::bip143;
31 use bitcoin::util::address::Address;
32 use bitcoin::util::bip32::{ChildNumber, ExtendedPubKey, ExtendedPrivKey};
33 use bitcoin::blockdata::block::{Block, BlockHeader};
34 use bitcoin::blockdata::transaction::{Transaction, TxOut, TxIn, SigHashType, OutPoint as BitcoinOutPoint};
35 use bitcoin::blockdata::script::{Builder, Script};
36 use bitcoin::blockdata::opcodes;
37 use bitcoin::blockdata::constants::genesis_block;
38 use bitcoin::network::constants::Network;
40 use bitcoin::hashes::sha256::Hash as Sha256;
41 use bitcoin::hashes::Hash;
43 use bitcoin::secp256k1::{Secp256k1, Message};
44 use bitcoin::secp256k1::key::{PublicKey,SecretKey};
48 use std::collections::{BTreeSet, HashMap, HashSet};
49 use std::default::Default;
50 use std::sync::{Arc, Mutex};
51 use std::sync::atomic::Ordering;
54 use ln::functional_test_utils::*;
57 fn test_insane_channel_opens() {
58 // Stand up a network of 2 nodes
59 let chanmon_cfgs = create_chanmon_cfgs(2);
60 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
61 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
62 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
64 // Instantiate channel parameters where we push the maximum msats given our
66 let channel_value_sat = 31337; // same as funding satoshis
67 let channel_reserve_satoshis = Channel::<EnforcingChannelKeys>::get_remote_channel_reserve_satoshis(channel_value_sat);
68 let push_msat = (channel_value_sat - channel_reserve_satoshis) * 1000;
70 // Have node0 initiate a channel to node1 with aforementioned parameters
71 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_sat, push_msat, 42, None).unwrap();
73 // Extract the channel open message from node0 to node1
74 let open_channel_message = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
76 // Test helper that asserts we get the correct error string given a mutator
77 // that supposedly makes the channel open message insane
78 let insane_open_helper = |expected_error_str: &str, message_mutator: fn(msgs::OpenChannel) -> msgs::OpenChannel| {
79 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &message_mutator(open_channel_message.clone()));
80 let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
81 assert_eq!(msg_events.len(), 1);
82 let expected_regex = regex::Regex::new(expected_error_str).unwrap();
83 if let MessageSendEvent::HandleError { ref action, .. } = msg_events[0] {
85 &ErrorAction::SendErrorMessage { .. } => {
86 nodes[1].logger.assert_log_regex("lightning::ln::channelmanager".to_string(), expected_regex, 1);
88 _ => panic!("unexpected event!"),
90 } else { assert!(false); }
93 use ln::channel::MAX_FUNDING_SATOSHIS;
94 use ln::channelmanager::MAX_LOCAL_BREAKDOWN_TIMEOUT;
96 // Test all mutations that would make the channel open message insane
97 insane_open_helper(format!("Funding must be smaller than {}. It was {}", MAX_FUNDING_SATOSHIS, MAX_FUNDING_SATOSHIS).as_str(), |mut msg| { msg.funding_satoshis = MAX_FUNDING_SATOSHIS; msg });
99 insane_open_helper("Bogus channel_reserve_satoshis", |mut msg| { msg.channel_reserve_satoshis = msg.funding_satoshis + 1; msg });
101 insane_open_helper(r"push_msat \d+ was larger than funding value \d+", |mut msg| { msg.push_msat = (msg.funding_satoshis - msg.channel_reserve_satoshis) * 1000 + 1; msg });
103 insane_open_helper("Peer never wants payout outputs?", |mut msg| { msg.dust_limit_satoshis = msg.funding_satoshis + 1 ; msg });
105 insane_open_helper(r"Bogus; channel reserve \(\d+\) is less than dust limit \(\d+\)", |mut msg| { msg.dust_limit_satoshis = msg.channel_reserve_satoshis + 1; msg });
107 insane_open_helper(r"Minimum htlc value \(\d+\) was larger than full channel value \(\d+\)", |mut msg| { msg.htlc_minimum_msat = (msg.funding_satoshis - msg.channel_reserve_satoshis) * 1000; msg });
109 insane_open_helper("They wanted our payments to be delayed by a needlessly long period", |mut msg| { msg.to_self_delay = MAX_LOCAL_BREAKDOWN_TIMEOUT + 1; msg });
111 insane_open_helper("0 max_accepted_htlcs makes for a useless channel", |mut msg| { msg.max_accepted_htlcs = 0; msg });
113 insane_open_helper("max_accepted_htlcs was 484. It must not be larger than 483", |mut msg| { msg.max_accepted_htlcs = 484; msg });
117 fn test_async_inbound_update_fee() {
118 let chanmon_cfgs = create_chanmon_cfgs(2);
119 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
120 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
121 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
122 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
123 let logger = test_utils::TestLogger::new();
124 let channel_id = chan.2;
127 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
131 // send (1) commitment_signed -.
132 // <- update_add_htlc/commitment_signed
133 // send (2) RAA (awaiting remote revoke) -.
134 // (1) commitment_signed is delivered ->
135 // .- send (3) RAA (awaiting remote revoke)
136 // (2) RAA is delivered ->
137 // .- send (4) commitment_signed
138 // <- (3) RAA is delivered
139 // send (5) commitment_signed -.
140 // <- (4) commitment_signed is delivered
142 // (5) commitment_signed is delivered ->
144 // (6) RAA is delivered ->
146 // First nodes[0] generates an update_fee
147 nodes[0].node.update_fee(channel_id, get_feerate!(nodes[0], channel_id) + 20).unwrap();
148 check_added_monitors!(nodes[0], 1);
150 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
151 assert_eq!(events_0.len(), 1);
152 let (update_msg, commitment_signed) = match events_0[0] { // (1)
153 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
154 (update_fee.as_ref(), commitment_signed)
156 _ => panic!("Unexpected event"),
159 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
161 // ...but before it's delivered, nodes[1] starts to send a payment back to nodes[0]...
162 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
163 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
164 nodes[1].node.send_payment(&get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), None, &Vec::new(), 40000, TEST_FINAL_CLTV, &logger).unwrap(), our_payment_hash, &None).unwrap();
165 check_added_monitors!(nodes[1], 1);
167 let payment_event = {
168 let mut events_1 = nodes[1].node.get_and_clear_pending_msg_events();
169 assert_eq!(events_1.len(), 1);
170 SendEvent::from_event(events_1.remove(0))
172 assert_eq!(payment_event.node_id, nodes[0].node.get_our_node_id());
173 assert_eq!(payment_event.msgs.len(), 1);
175 // ...now when the messages get delivered everyone should be happy
176 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]);
177 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg); // (2)
178 let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
179 // nodes[0] is awaiting nodes[1] revoke_and_ack so get_event_msg's assert(len == 1) passes
180 check_added_monitors!(nodes[0], 1);
182 // deliver(1), generate (3):
183 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
184 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
185 // nodes[1] is awaiting nodes[0] revoke_and_ack so get_event_msg's assert(len == 1) passes
186 check_added_monitors!(nodes[1], 1);
188 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack); // deliver (2)
189 let bs_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
190 assert!(bs_update.update_add_htlcs.is_empty()); // (4)
191 assert!(bs_update.update_fulfill_htlcs.is_empty()); // (4)
192 assert!(bs_update.update_fail_htlcs.is_empty()); // (4)
193 assert!(bs_update.update_fail_malformed_htlcs.is_empty()); // (4)
194 assert!(bs_update.update_fee.is_none()); // (4)
195 check_added_monitors!(nodes[1], 1);
197 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack); // deliver (3)
198 let as_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
199 assert!(as_update.update_add_htlcs.is_empty()); // (5)
200 assert!(as_update.update_fulfill_htlcs.is_empty()); // (5)
201 assert!(as_update.update_fail_htlcs.is_empty()); // (5)
202 assert!(as_update.update_fail_malformed_htlcs.is_empty()); // (5)
203 assert!(as_update.update_fee.is_none()); // (5)
204 check_added_monitors!(nodes[0], 1);
206 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_update.commitment_signed); // deliver (4)
207 let as_second_revoke = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
208 // only (6) so get_event_msg's assert(len == 1) passes
209 check_added_monitors!(nodes[0], 1);
211 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_update.commitment_signed); // deliver (5)
212 let bs_second_revoke = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
213 check_added_monitors!(nodes[1], 1);
215 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke);
216 check_added_monitors!(nodes[0], 1);
218 let events_2 = nodes[0].node.get_and_clear_pending_events();
219 assert_eq!(events_2.len(), 1);
221 Event::PendingHTLCsForwardable {..} => {}, // If we actually processed we'd receive the payment
222 _ => panic!("Unexpected event"),
225 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_second_revoke); // deliver (6)
226 check_added_monitors!(nodes[1], 1);
230 fn test_update_fee_unordered_raa() {
231 // Just the intro to the previous test followed by an out-of-order RAA (which caused a
232 // crash in an earlier version of the update_fee patch)
233 let chanmon_cfgs = create_chanmon_cfgs(2);
234 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
235 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
236 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
237 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
238 let channel_id = chan.2;
239 let logger = test_utils::TestLogger::new();
242 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
244 // First nodes[0] generates an update_fee
245 nodes[0].node.update_fee(channel_id, get_feerate!(nodes[0], channel_id) + 20).unwrap();
246 check_added_monitors!(nodes[0], 1);
248 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
249 assert_eq!(events_0.len(), 1);
250 let update_msg = match events_0[0] { // (1)
251 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, .. }, .. } => {
254 _ => panic!("Unexpected event"),
257 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
259 // ...but before it's delivered, nodes[1] starts to send a payment back to nodes[0]...
260 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
261 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
262 nodes[1].node.send_payment(&get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), None, &Vec::new(), 40000, TEST_FINAL_CLTV, &logger).unwrap(), our_payment_hash, &None).unwrap();
263 check_added_monitors!(nodes[1], 1);
265 let payment_event = {
266 let mut events_1 = nodes[1].node.get_and_clear_pending_msg_events();
267 assert_eq!(events_1.len(), 1);
268 SendEvent::from_event(events_1.remove(0))
270 assert_eq!(payment_event.node_id, nodes[0].node.get_our_node_id());
271 assert_eq!(payment_event.msgs.len(), 1);
273 // ...now when the messages get delivered everyone should be happy
274 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]);
275 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg); // (2)
276 let as_revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
277 // nodes[0] is awaiting nodes[1] revoke_and_ack so get_event_msg's assert(len == 1) passes
278 check_added_monitors!(nodes[0], 1);
280 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_msg); // deliver (2)
281 check_added_monitors!(nodes[1], 1);
283 // We can't continue, sadly, because our (1) now has a bogus signature
287 fn test_multi_flight_update_fee() {
288 let chanmon_cfgs = create_chanmon_cfgs(2);
289 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
290 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
291 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
292 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
293 let channel_id = chan.2;
296 // update_fee/commitment_signed ->
297 // .- send (1) RAA and (2) commitment_signed
298 // update_fee (never committed) ->
300 // We have to manually generate the above update_fee, it is allowed by the protocol but we
301 // don't track which updates correspond to which revoke_and_ack responses so we're in
302 // AwaitingRAA mode and will not generate the update_fee yet.
303 // <- (1) RAA delivered
304 // (3) is generated and send (4) CS -.
305 // Note that A cannot generate (4) prior to (1) being delivered as it otherwise doesn't
306 // know the per_commitment_point to use for it.
307 // <- (2) commitment_signed delivered
309 // B should send no response here
310 // (4) commitment_signed delivered ->
311 // <- RAA/commitment_signed delivered
314 // First nodes[0] generates an update_fee
315 let initial_feerate = get_feerate!(nodes[0], channel_id);
316 nodes[0].node.update_fee(channel_id, initial_feerate + 20).unwrap();
317 check_added_monitors!(nodes[0], 1);
319 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
320 assert_eq!(events_0.len(), 1);
321 let (update_msg_1, commitment_signed_1) = match events_0[0] { // (1)
322 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => {
323 (update_fee.as_ref().unwrap(), commitment_signed)
325 _ => panic!("Unexpected event"),
328 // Deliver first update_fee/commitment_signed pair, generating (1) and (2):
329 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg_1);
330 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed_1);
331 let (bs_revoke_msg, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
332 check_added_monitors!(nodes[1], 1);
334 // nodes[0] is awaiting a revoke from nodes[1] before it will create a new commitment
336 nodes[0].node.update_fee(channel_id, initial_feerate + 40).unwrap();
337 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
338 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
340 // Create the (3) update_fee message that nodes[0] will generate before it does...
341 let mut update_msg_2 = msgs::UpdateFee {
342 channel_id: update_msg_1.channel_id.clone(),
343 feerate_per_kw: (initial_feerate + 30) as u32,
346 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg_2);
348 update_msg_2.feerate_per_kw = (initial_feerate + 40) as u32;
350 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg_2);
352 // Deliver (1), generating (3) and (4)
353 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_msg);
354 let as_second_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
355 check_added_monitors!(nodes[0], 1);
356 assert!(as_second_update.update_add_htlcs.is_empty());
357 assert!(as_second_update.update_fulfill_htlcs.is_empty());
358 assert!(as_second_update.update_fail_htlcs.is_empty());
359 assert!(as_second_update.update_fail_malformed_htlcs.is_empty());
360 // Check that the update_fee newly generated matches what we delivered:
361 assert_eq!(as_second_update.update_fee.as_ref().unwrap().channel_id, update_msg_2.channel_id);
362 assert_eq!(as_second_update.update_fee.as_ref().unwrap().feerate_per_kw, update_msg_2.feerate_per_kw);
364 // Deliver (2) commitment_signed
365 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_commitment_signed);
366 let as_revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
367 check_added_monitors!(nodes[0], 1);
368 // No commitment_signed so get_event_msg's assert(len == 1) passes
370 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_msg);
371 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
372 check_added_monitors!(nodes[1], 1);
375 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_second_update.commitment_signed);
376 let (bs_second_revoke, bs_second_commitment) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
377 check_added_monitors!(nodes[1], 1);
379 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke);
380 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
381 check_added_monitors!(nodes[0], 1);
383 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_commitment);
384 let as_second_revoke = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
385 // No commitment_signed so get_event_msg's assert(len == 1) passes
386 check_added_monitors!(nodes[0], 1);
388 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_second_revoke);
389 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
390 check_added_monitors!(nodes[1], 1);
394 fn test_1_conf_open() {
395 // Previously, if the minium_depth config was set to 1, we'd never send a funding_locked. This
396 // tests that we properly send one in that case.
397 let mut alice_config = UserConfig::default();
398 alice_config.own_channel_config.minimum_depth = 1;
399 alice_config.channel_options.announced_channel = true;
400 alice_config.peer_channel_config_limits.force_announced_channel_preference = false;
401 let mut bob_config = UserConfig::default();
402 bob_config.own_channel_config.minimum_depth = 1;
403 bob_config.channel_options.announced_channel = true;
404 bob_config.peer_channel_config_limits.force_announced_channel_preference = false;
405 let chanmon_cfgs = create_chanmon_cfgs(2);
406 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
407 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[Some(alice_config), Some(bob_config)]);
408 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
410 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001, InitFeatures::known(), InitFeatures::known());
411 assert!(nodes[0].chain_monitor.does_match_tx(&tx));
412 assert!(nodes[1].chain_monitor.does_match_tx(&tx));
414 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
415 nodes[1].block_notifier.block_connected_checked(&header, 1, &[&tx; 1], &[tx.version as usize; 1]);
416 nodes[0].node.handle_funding_locked(&nodes[1].node.get_our_node_id(), &get_event_msg!(nodes[1], MessageSendEvent::SendFundingLocked, nodes[0].node.get_our_node_id()));
418 nodes[0].block_notifier.block_connected_checked(&header, 1, &[&tx; 1], &[tx.version as usize; 1]);
419 let (funding_locked, _) = create_chan_between_nodes_with_value_confirm_second(&nodes[1], &nodes[0]);
420 let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_locked);
423 assert!(node.net_graph_msg_handler.handle_channel_announcement(&announcement).unwrap());
424 node.net_graph_msg_handler.handle_channel_update(&as_update).unwrap();
425 node.net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
429 fn do_test_sanity_on_in_flight_opens(steps: u8) {
430 // Previously, we had issues deserializing channels when we hadn't connected the first block
431 // after creation. To catch that and similar issues, we lean on the Node::drop impl to test
432 // serialization round-trips and simply do steps towards opening a channel and then drop the
435 let chanmon_cfgs = create_chanmon_cfgs(2);
436 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
437 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
438 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
440 if steps & 0b1000_0000 != 0{
441 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
442 nodes[0].block_notifier.block_connected_checked(&header, 1, &Vec::new(), &[0; 0]);
443 nodes[1].block_notifier.block_connected_checked(&header, 1, &Vec::new(), &[0; 0]);
446 if steps & 0x0f == 0 { return; }
447 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap();
448 let open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
450 if steps & 0x0f == 1 { return; }
451 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_channel);
452 let accept_channel = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
454 if steps & 0x0f == 2 { return; }
455 nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &accept_channel);
457 let (temporary_channel_id, tx, funding_output) = create_funding_transaction(&nodes[0], 100000, 42);
459 if steps & 0x0f == 3 { return; }
460 nodes[0].node.funding_transaction_generated(&temporary_channel_id, funding_output);
461 check_added_monitors!(nodes[0], 0);
462 let funding_created = get_event_msg!(nodes[0], MessageSendEvent::SendFundingCreated, nodes[1].node.get_our_node_id());
464 if steps & 0x0f == 4 { return; }
465 nodes[1].node.handle_funding_created(&nodes[0].node.get_our_node_id(), &funding_created);
467 let mut added_monitors = nodes[1].chan_monitor.added_monitors.lock().unwrap();
468 assert_eq!(added_monitors.len(), 1);
469 assert_eq!(added_monitors[0].0, funding_output);
470 added_monitors.clear();
472 let funding_signed = get_event_msg!(nodes[1], MessageSendEvent::SendFundingSigned, nodes[0].node.get_our_node_id());
474 if steps & 0x0f == 5 { return; }
475 nodes[0].node.handle_funding_signed(&nodes[1].node.get_our_node_id(), &funding_signed);
477 let mut added_monitors = nodes[0].chan_monitor.added_monitors.lock().unwrap();
478 assert_eq!(added_monitors.len(), 1);
479 assert_eq!(added_monitors[0].0, funding_output);
480 added_monitors.clear();
483 let events_4 = nodes[0].node.get_and_clear_pending_events();
484 assert_eq!(events_4.len(), 1);
486 Event::FundingBroadcastSafe { ref funding_txo, user_channel_id } => {
487 assert_eq!(user_channel_id, 42);
488 assert_eq!(*funding_txo, funding_output);
490 _ => panic!("Unexpected event"),
493 if steps & 0x0f == 6 { return; }
494 create_chan_between_nodes_with_value_confirm_first(&nodes[0], &nodes[1], &tx);
496 if steps & 0x0f == 7 { return; }
497 confirm_transaction(&nodes[0].block_notifier, &nodes[0].chain_monitor, &tx, tx.version);
498 create_chan_between_nodes_with_value_confirm_second(&nodes[1], &nodes[0]);
502 fn test_sanity_on_in_flight_opens() {
503 do_test_sanity_on_in_flight_opens(0);
504 do_test_sanity_on_in_flight_opens(0 | 0b1000_0000);
505 do_test_sanity_on_in_flight_opens(1);
506 do_test_sanity_on_in_flight_opens(1 | 0b1000_0000);
507 do_test_sanity_on_in_flight_opens(2);
508 do_test_sanity_on_in_flight_opens(2 | 0b1000_0000);
509 do_test_sanity_on_in_flight_opens(3);
510 do_test_sanity_on_in_flight_opens(3 | 0b1000_0000);
511 do_test_sanity_on_in_flight_opens(4);
512 do_test_sanity_on_in_flight_opens(4 | 0b1000_0000);
513 do_test_sanity_on_in_flight_opens(5);
514 do_test_sanity_on_in_flight_opens(5 | 0b1000_0000);
515 do_test_sanity_on_in_flight_opens(6);
516 do_test_sanity_on_in_flight_opens(6 | 0b1000_0000);
517 do_test_sanity_on_in_flight_opens(7);
518 do_test_sanity_on_in_flight_opens(7 | 0b1000_0000);
519 do_test_sanity_on_in_flight_opens(8);
520 do_test_sanity_on_in_flight_opens(8 | 0b1000_0000);
524 fn test_update_fee_vanilla() {
525 let chanmon_cfgs = create_chanmon_cfgs(2);
526 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
527 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
528 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
529 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
530 let channel_id = chan.2;
532 let feerate = get_feerate!(nodes[0], channel_id);
533 nodes[0].node.update_fee(channel_id, feerate+25).unwrap();
534 check_added_monitors!(nodes[0], 1);
536 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
537 assert_eq!(events_0.len(), 1);
538 let (update_msg, commitment_signed) = match events_0[0] {
539 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 } } => {
540 (update_fee.as_ref(), commitment_signed)
542 _ => panic!("Unexpected event"),
544 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
546 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
547 let (revoke_msg, commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
548 check_added_monitors!(nodes[1], 1);
550 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg);
551 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
552 check_added_monitors!(nodes[0], 1);
554 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed);
555 let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
556 // No commitment_signed so get_event_msg's assert(len == 1) passes
557 check_added_monitors!(nodes[0], 1);
559 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg);
560 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
561 check_added_monitors!(nodes[1], 1);
565 fn test_update_fee_that_funder_cannot_afford() {
566 let chanmon_cfgs = create_chanmon_cfgs(2);
567 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
568 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
569 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
570 let channel_value = 1888;
571 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, channel_value, 700000, InitFeatures::known(), InitFeatures::known());
572 let channel_id = chan.2;
575 nodes[0].node.update_fee(channel_id, feerate).unwrap();
576 check_added_monitors!(nodes[0], 1);
577 let update_msg = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
579 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg.update_fee.unwrap());
581 commitment_signed_dance!(nodes[1], nodes[0], update_msg.commitment_signed, false);
583 //Confirm that the new fee based on the last local commitment txn is what we expected based on the feerate of 260 set above.
584 //This value results in a fee that is exactly what the funder can afford (277 sat + 1000 sat channel reserve)
586 let commitment_tx = get_local_commitment_txn!(nodes[1], channel_id)[0].clone();
588 //We made sure neither party's funds are below the dust limit so -2 non-HTLC txns from number of outputs
589 let num_htlcs = commitment_tx.output.len() - 2;
590 let total_fee: u64 = feerate as u64 * (COMMITMENT_TX_BASE_WEIGHT + (num_htlcs as u64) * COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000;
591 let mut actual_fee = commitment_tx.output.iter().fold(0, |acc, output| acc + output.value);
592 actual_fee = channel_value - actual_fee;
593 assert_eq!(total_fee, actual_fee);
596 //Add 2 to the previous fee rate to the final fee increases by 1 (with no HTLCs the fee is essentially
597 //fee_rate*(724/1000) so the increment of 1*0.724 is rounded back down)
598 nodes[0].node.update_fee(channel_id, feerate+2).unwrap();
599 check_added_monitors!(nodes[0], 1);
601 let update2_msg = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
603 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update2_msg.update_fee.unwrap());
605 //While producing the commitment_signed response after handling a received update_fee request the
606 //check to see if the funder, who sent the update_fee request, can afford the new fee (funder_balance >= fee+channel_reserve)
607 //Should produce and error.
608 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &update2_msg.commitment_signed);
609 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Funding remote cannot afford proposed new fee".to_string(), 1);
610 check_added_monitors!(nodes[1], 1);
611 check_closed_broadcast!(nodes[1], true);
615 fn test_update_fee_with_fundee_update_add_htlc() {
616 let chanmon_cfgs = create_chanmon_cfgs(2);
617 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
618 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
619 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
620 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
621 let channel_id = chan.2;
622 let logger = test_utils::TestLogger::new();
625 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
627 let feerate = get_feerate!(nodes[0], channel_id);
628 nodes[0].node.update_fee(channel_id, feerate+20).unwrap();
629 check_added_monitors!(nodes[0], 1);
631 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
632 assert_eq!(events_0.len(), 1);
633 let (update_msg, commitment_signed) = match events_0[0] {
634 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 } } => {
635 (update_fee.as_ref(), commitment_signed)
637 _ => panic!("Unexpected event"),
639 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
640 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
641 let (revoke_msg, commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
642 check_added_monitors!(nodes[1], 1);
644 let (our_payment_preimage, our_payment_hash) = get_payment_preimage_hash!(nodes[1]);
645 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
646 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), None, &Vec::new(), 800000, TEST_FINAL_CLTV, &logger).unwrap();
648 // nothing happens since node[1] is in AwaitingRemoteRevoke
649 nodes[1].node.send_payment(&route, our_payment_hash, &None).unwrap();
651 let mut added_monitors = nodes[0].chan_monitor.added_monitors.lock().unwrap();
652 assert_eq!(added_monitors.len(), 0);
653 added_monitors.clear();
655 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
656 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
657 // node[1] has nothing to do
659 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg);
660 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
661 check_added_monitors!(nodes[0], 1);
663 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed);
664 let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
665 // No commitment_signed so get_event_msg's assert(len == 1) passes
666 check_added_monitors!(nodes[0], 1);
667 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg);
668 check_added_monitors!(nodes[1], 1);
669 // AwaitingRemoteRevoke ends here
671 let commitment_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
672 assert_eq!(commitment_update.update_add_htlcs.len(), 1);
673 assert_eq!(commitment_update.update_fulfill_htlcs.len(), 0);
674 assert_eq!(commitment_update.update_fail_htlcs.len(), 0);
675 assert_eq!(commitment_update.update_fail_malformed_htlcs.len(), 0);
676 assert_eq!(commitment_update.update_fee.is_none(), true);
678 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &commitment_update.update_add_htlcs[0]);
679 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_update.commitment_signed);
680 check_added_monitors!(nodes[0], 1);
681 let (revoke, commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
683 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke);
684 check_added_monitors!(nodes[1], 1);
685 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
687 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &commitment_signed);
688 check_added_monitors!(nodes[1], 1);
689 let revoke = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
690 // No commitment_signed so get_event_msg's assert(len == 1) passes
692 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke);
693 check_added_monitors!(nodes[0], 1);
694 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
696 expect_pending_htlcs_forwardable!(nodes[0]);
698 let events = nodes[0].node.get_and_clear_pending_events();
699 assert_eq!(events.len(), 1);
701 Event::PaymentReceived { .. } => { },
702 _ => panic!("Unexpected event"),
705 claim_payment(&nodes[1], &vec!(&nodes[0])[..], our_payment_preimage, 800_000);
707 send_payment(&nodes[1], &vec!(&nodes[0])[..], 800000, 800_000);
708 send_payment(&nodes[0], &vec!(&nodes[1])[..], 800000, 800_000);
709 close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true);
713 fn test_update_fee() {
714 let chanmon_cfgs = create_chanmon_cfgs(2);
715 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
716 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
717 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
718 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
719 let channel_id = chan.2;
722 // (1) update_fee/commitment_signed ->
723 // <- (2) revoke_and_ack
724 // .- send (3) commitment_signed
725 // (4) update_fee/commitment_signed ->
726 // .- send (5) revoke_and_ack (no CS as we're awaiting a revoke)
727 // <- (3) commitment_signed delivered
728 // send (6) revoke_and_ack -.
729 // <- (5) deliver revoke_and_ack
730 // (6) deliver revoke_and_ack ->
731 // .- send (7) commitment_signed in response to (4)
732 // <- (7) deliver commitment_signed
735 // Create and deliver (1)...
736 let feerate = get_feerate!(nodes[0], channel_id);
737 nodes[0].node.update_fee(channel_id, feerate+20).unwrap();
738 check_added_monitors!(nodes[0], 1);
740 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
741 assert_eq!(events_0.len(), 1);
742 let (update_msg, commitment_signed) = match events_0[0] {
743 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 } } => {
744 (update_fee.as_ref(), commitment_signed)
746 _ => panic!("Unexpected event"),
748 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
750 // Generate (2) and (3):
751 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
752 let (revoke_msg, commitment_signed_0) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
753 check_added_monitors!(nodes[1], 1);
756 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg);
757 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
758 check_added_monitors!(nodes[0], 1);
760 // Create and deliver (4)...
761 nodes[0].node.update_fee(channel_id, feerate+30).unwrap();
762 check_added_monitors!(nodes[0], 1);
763 let events_0 = nodes[0].node.get_and_clear_pending_msg_events();
764 assert_eq!(events_0.len(), 1);
765 let (update_msg, commitment_signed) = match events_0[0] {
766 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 } } => {
767 (update_fee.as_ref(), commitment_signed)
769 _ => panic!("Unexpected event"),
772 nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap());
773 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed);
774 check_added_monitors!(nodes[1], 1);
776 let revoke_msg = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
777 // No commitment_signed so get_event_msg's assert(len == 1) passes
779 // Handle (3), creating (6):
780 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed_0);
781 check_added_monitors!(nodes[0], 1);
782 let revoke_msg_0 = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
783 // No commitment_signed so get_event_msg's assert(len == 1) passes
786 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg);
787 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
788 check_added_monitors!(nodes[0], 1);
790 // Deliver (6), creating (7):
791 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg_0);
792 let commitment_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
793 assert!(commitment_update.update_add_htlcs.is_empty());
794 assert!(commitment_update.update_fulfill_htlcs.is_empty());
795 assert!(commitment_update.update_fail_htlcs.is_empty());
796 assert!(commitment_update.update_fail_malformed_htlcs.is_empty());
797 assert!(commitment_update.update_fee.is_none());
798 check_added_monitors!(nodes[1], 1);
801 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_update.commitment_signed);
802 check_added_monitors!(nodes[0], 1);
803 let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
804 // No commitment_signed so get_event_msg's assert(len == 1) passes
806 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg);
807 check_added_monitors!(nodes[1], 1);
808 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
810 assert_eq!(get_feerate!(nodes[0], channel_id), feerate + 30);
811 assert_eq!(get_feerate!(nodes[1], channel_id), feerate + 30);
812 close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true);
816 fn pre_funding_lock_shutdown_test() {
817 // Test sending a shutdown prior to funding_locked after funding generation
818 let chanmon_cfgs = create_chanmon_cfgs(2);
819 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
820 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
821 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
822 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 8000000, 0, InitFeatures::known(), InitFeatures::known());
823 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
824 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![tx.clone()]}, 1);
825 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![tx.clone()]}, 1);
827 nodes[0].node.close_channel(&OutPoint { txid: tx.txid(), index: 0 }.to_channel_id()).unwrap();
828 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
829 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
830 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
831 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown);
833 let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
834 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
835 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
836 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap());
837 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
838 assert!(node_0_none.is_none());
840 assert!(nodes[0].node.list_channels().is_empty());
841 assert!(nodes[1].node.list_channels().is_empty());
845 fn updates_shutdown_wait() {
846 // Test sending a shutdown with outstanding updates pending
847 let chanmon_cfgs = create_chanmon_cfgs(3);
848 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
849 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
850 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
851 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
852 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
853 let logger = test_utils::TestLogger::new();
855 let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000);
857 nodes[0].node.close_channel(&chan_1.2).unwrap();
858 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
859 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
860 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
861 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown);
863 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
864 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
866 let (_, payment_hash) = get_payment_preimage_hash!(nodes[0]);
868 let net_graph_msg_handler0 = &nodes[0].net_graph_msg_handler;
869 let net_graph_msg_handler1 = &nodes[1].net_graph_msg_handler;
870 let route_1 = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler0.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
871 let route_2 = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler1.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
872 unwrap_send_err!(nodes[0].node.send_payment(&route_1, payment_hash, &None), true, APIError::ChannelUnavailable {..}, {});
873 unwrap_send_err!(nodes[1].node.send_payment(&route_2, payment_hash, &None), true, APIError::ChannelUnavailable {..}, {});
875 assert!(nodes[2].node.claim_funds(our_payment_preimage, &None, 100_000));
876 check_added_monitors!(nodes[2], 1);
877 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
878 assert!(updates.update_add_htlcs.is_empty());
879 assert!(updates.update_fail_htlcs.is_empty());
880 assert!(updates.update_fail_malformed_htlcs.is_empty());
881 assert!(updates.update_fee.is_none());
882 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
883 nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
884 check_added_monitors!(nodes[1], 1);
885 let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
886 commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false);
888 assert!(updates_2.update_add_htlcs.is_empty());
889 assert!(updates_2.update_fail_htlcs.is_empty());
890 assert!(updates_2.update_fail_malformed_htlcs.is_empty());
891 assert!(updates_2.update_fee.is_none());
892 assert_eq!(updates_2.update_fulfill_htlcs.len(), 1);
893 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]);
894 commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
896 let events = nodes[0].node.get_and_clear_pending_events();
897 assert_eq!(events.len(), 1);
899 Event::PaymentSent { ref payment_preimage } => {
900 assert_eq!(our_payment_preimage, *payment_preimage);
902 _ => panic!("Unexpected event"),
905 let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
906 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
907 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
908 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap());
909 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
910 assert!(node_0_none.is_none());
912 assert!(nodes[0].node.list_channels().is_empty());
914 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
915 nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
916 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
917 assert!(nodes[1].node.list_channels().is_empty());
918 assert!(nodes[2].node.list_channels().is_empty());
922 fn htlc_fail_async_shutdown() {
923 // Test HTLCs fail if shutdown starts even if messages are delivered out-of-order
924 let chanmon_cfgs = create_chanmon_cfgs(3);
925 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
926 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
927 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
928 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
929 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
930 let logger = test_utils::TestLogger::new();
932 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
933 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
934 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
935 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
936 check_added_monitors!(nodes[0], 1);
937 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
938 assert_eq!(updates.update_add_htlcs.len(), 1);
939 assert!(updates.update_fulfill_htlcs.is_empty());
940 assert!(updates.update_fail_htlcs.is_empty());
941 assert!(updates.update_fail_malformed_htlcs.is_empty());
942 assert!(updates.update_fee.is_none());
944 nodes[1].node.close_channel(&chan_1.2).unwrap();
945 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
946 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown);
947 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
949 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
950 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &updates.commitment_signed);
951 check_added_monitors!(nodes[1], 1);
952 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
953 commitment_signed_dance!(nodes[1], nodes[0], (), false, true, false);
955 let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
956 assert!(updates_2.update_add_htlcs.is_empty());
957 assert!(updates_2.update_fulfill_htlcs.is_empty());
958 assert_eq!(updates_2.update_fail_htlcs.len(), 1);
959 assert!(updates_2.update_fail_malformed_htlcs.is_empty());
960 assert!(updates_2.update_fee.is_none());
962 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fail_htlcs[0]);
963 commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
965 expect_payment_failed!(nodes[0], our_payment_hash, false);
967 let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
968 assert_eq!(msg_events.len(), 2);
969 let node_0_closing_signed = match msg_events[0] {
970 MessageSendEvent::SendClosingSigned { ref node_id, ref msg } => {
971 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
974 _ => panic!("Unexpected event"),
976 match msg_events[1] {
977 MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelUpdateMessage { ref msg }} => {
978 assert_eq!(msg.contents.short_channel_id, chan_1.0.contents.short_channel_id);
980 _ => panic!("Unexpected event"),
983 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
984 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
985 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
986 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap());
987 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
988 assert!(node_0_none.is_none());
990 assert!(nodes[0].node.list_channels().is_empty());
992 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
993 nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
994 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
995 assert!(nodes[1].node.list_channels().is_empty());
996 assert!(nodes[2].node.list_channels().is_empty());
999 fn do_test_shutdown_rebroadcast(recv_count: u8) {
1000 // Test that shutdown/closing_signed is re-sent on reconnect with a variable number of
1001 // messages delivered prior to disconnect
1002 let chanmon_cfgs = create_chanmon_cfgs(3);
1003 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1004 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1005 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1006 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
1007 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
1009 let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000);
1011 nodes[1].node.close_channel(&chan_1.2).unwrap();
1012 let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
1014 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown);
1015 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
1017 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
1021 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
1022 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
1024 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1025 let node_0_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
1026 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1027 let node_1_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
1029 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_reestablish);
1030 let node_1_2nd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
1031 assert!(node_1_shutdown == node_1_2nd_shutdown);
1033 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_reestablish);
1034 let node_0_2nd_shutdown = if recv_count > 0 {
1035 let node_0_2nd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
1036 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_2nd_shutdown);
1039 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1040 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_2nd_shutdown);
1041 get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id())
1043 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_2nd_shutdown);
1045 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1046 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1048 assert!(nodes[2].node.claim_funds(our_payment_preimage, &None, 100_000));
1049 check_added_monitors!(nodes[2], 1);
1050 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
1051 assert!(updates.update_add_htlcs.is_empty());
1052 assert!(updates.update_fail_htlcs.is_empty());
1053 assert!(updates.update_fail_malformed_htlcs.is_empty());
1054 assert!(updates.update_fee.is_none());
1055 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
1056 nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
1057 check_added_monitors!(nodes[1], 1);
1058 let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1059 commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false);
1061 assert!(updates_2.update_add_htlcs.is_empty());
1062 assert!(updates_2.update_fail_htlcs.is_empty());
1063 assert!(updates_2.update_fail_malformed_htlcs.is_empty());
1064 assert!(updates_2.update_fee.is_none());
1065 assert_eq!(updates_2.update_fulfill_htlcs.len(), 1);
1066 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]);
1067 commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true);
1069 let events = nodes[0].node.get_and_clear_pending_events();
1070 assert_eq!(events.len(), 1);
1072 Event::PaymentSent { ref payment_preimage } => {
1073 assert_eq!(our_payment_preimage, *payment_preimage);
1075 _ => panic!("Unexpected event"),
1078 let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
1080 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
1081 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
1082 assert!(node_1_closing_signed.is_some());
1085 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
1086 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
1088 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1089 let node_0_2nd_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id());
1090 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
1091 if recv_count == 0 {
1092 // If all closing_signeds weren't delivered we can just resume where we left off...
1093 let node_1_2nd_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
1095 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_2nd_reestablish);
1096 let node_0_3rd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
1097 assert!(node_0_2nd_shutdown == node_0_3rd_shutdown);
1099 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_2nd_reestablish);
1100 let node_1_3rd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
1101 assert!(node_1_3rd_shutdown == node_1_2nd_shutdown);
1103 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_3rd_shutdown);
1104 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1106 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_3rd_shutdown);
1107 let node_0_2nd_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
1108 assert!(node_0_closing_signed == node_0_2nd_closing_signed);
1110 nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed);
1111 let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
1112 nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap());
1113 let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
1114 assert!(node_0_none.is_none());
1116 // If one node, however, received + responded with an identical closing_signed we end
1117 // up erroring and node[0] will try to broadcast its own latest commitment transaction.
1118 // There isn't really anything better we can do simply, but in the future we might
1119 // explore storing a set of recently-closed channels that got disconnected during
1120 // closing_signed and avoiding broadcasting local commitment txn for some timeout to
1121 // give our counterparty enough time to (potentially) broadcast a cooperative closing
1123 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1125 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_2nd_reestablish);
1126 let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
1127 assert_eq!(msg_events.len(), 1);
1128 if let MessageSendEvent::HandleError { ref action, .. } = msg_events[0] {
1130 &ErrorAction::SendErrorMessage { ref msg } => {
1131 nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msg);
1132 assert_eq!(msg.channel_id, chan_1.2);
1134 _ => panic!("Unexpected event!"),
1136 } else { panic!("Needed SendErrorMessage close"); }
1138 // get_closing_signed_broadcast usually eats the BroadcastChannelUpdate for us and
1139 // checks it, but in this case nodes[0] didn't ever get a chance to receive a
1140 // closing_signed so we do it ourselves
1141 check_closed_broadcast!(nodes[0], false);
1142 check_added_monitors!(nodes[0], 1);
1145 assert!(nodes[0].node.list_channels().is_empty());
1147 assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
1148 nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear();
1149 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true);
1150 assert!(nodes[1].node.list_channels().is_empty());
1151 assert!(nodes[2].node.list_channels().is_empty());
1155 fn test_shutdown_rebroadcast() {
1156 do_test_shutdown_rebroadcast(0);
1157 do_test_shutdown_rebroadcast(1);
1158 do_test_shutdown_rebroadcast(2);
1162 fn fake_network_test() {
1163 // Simple test which builds a network of ChannelManagers, connects them to each other, and
1164 // tests that payments get routed and transactions broadcast in semi-reasonable ways.
1165 let chanmon_cfgs = create_chanmon_cfgs(4);
1166 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
1167 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
1168 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
1170 // Create some initial channels
1171 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
1172 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
1173 let chan_3 = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known());
1175 // Rebalance the network a bit by relaying one payment through all the channels...
1176 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000, 8_000_000);
1177 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000, 8_000_000);
1178 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000, 8_000_000);
1179 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000, 8_000_000);
1181 // Send some more payments
1182 send_payment(&nodes[1], &vec!(&nodes[2], &nodes[3])[..], 1000000, 1_000_000);
1183 send_payment(&nodes[3], &vec!(&nodes[2], &nodes[1], &nodes[0])[..], 1000000, 1_000_000);
1184 send_payment(&nodes[3], &vec!(&nodes[2], &nodes[1])[..], 1000000, 1_000_000);
1186 // Test failure packets
1187 let payment_hash_1 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 1000000).1;
1188 fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], payment_hash_1);
1190 // Add a new channel that skips 3
1191 let chan_4 = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known());
1193 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 1000000, 1_000_000);
1194 send_payment(&nodes[2], &vec!(&nodes[3])[..], 1000000, 1_000_000);
1195 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000, 8_000_000);
1196 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000, 8_000_000);
1197 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000, 8_000_000);
1198 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000, 8_000_000);
1199 send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000, 8_000_000);
1201 // Do some rebalance loop payments, simultaneously
1202 let mut hops = Vec::with_capacity(3);
1203 hops.push(RouteHop {
1204 pubkey: nodes[2].node.get_our_node_id(),
1205 node_features: NodeFeatures::empty(),
1206 short_channel_id: chan_2.0.contents.short_channel_id,
1207 channel_features: ChannelFeatures::empty(),
1209 cltv_expiry_delta: chan_3.0.contents.cltv_expiry_delta as u32
1211 hops.push(RouteHop {
1212 pubkey: nodes[3].node.get_our_node_id(),
1213 node_features: NodeFeatures::empty(),
1214 short_channel_id: chan_3.0.contents.short_channel_id,
1215 channel_features: ChannelFeatures::empty(),
1217 cltv_expiry_delta: chan_4.1.contents.cltv_expiry_delta as u32
1219 hops.push(RouteHop {
1220 pubkey: nodes[1].node.get_our_node_id(),
1221 node_features: NodeFeatures::empty(),
1222 short_channel_id: chan_4.0.contents.short_channel_id,
1223 channel_features: ChannelFeatures::empty(),
1225 cltv_expiry_delta: TEST_FINAL_CLTV,
1227 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;
1228 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;
1229 let payment_preimage_1 = send_along_route(&nodes[1], Route { paths: vec![hops] }, &vec!(&nodes[2], &nodes[3], &nodes[1])[..], 1000000).0;
1231 let mut hops = Vec::with_capacity(3);
1232 hops.push(RouteHop {
1233 pubkey: nodes[3].node.get_our_node_id(),
1234 node_features: NodeFeatures::empty(),
1235 short_channel_id: chan_4.0.contents.short_channel_id,
1236 channel_features: ChannelFeatures::empty(),
1238 cltv_expiry_delta: chan_3.1.contents.cltv_expiry_delta as u32
1240 hops.push(RouteHop {
1241 pubkey: nodes[2].node.get_our_node_id(),
1242 node_features: NodeFeatures::empty(),
1243 short_channel_id: chan_3.0.contents.short_channel_id,
1244 channel_features: ChannelFeatures::empty(),
1246 cltv_expiry_delta: chan_2.1.contents.cltv_expiry_delta as u32
1248 hops.push(RouteHop {
1249 pubkey: nodes[1].node.get_our_node_id(),
1250 node_features: NodeFeatures::empty(),
1251 short_channel_id: chan_2.0.contents.short_channel_id,
1252 channel_features: ChannelFeatures::empty(),
1254 cltv_expiry_delta: TEST_FINAL_CLTV,
1256 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;
1257 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;
1258 let payment_hash_2 = send_along_route(&nodes[1], Route { paths: vec![hops] }, &vec!(&nodes[3], &nodes[2], &nodes[1])[..], 1000000).1;
1260 // Claim the rebalances...
1261 fail_payment(&nodes[1], &vec!(&nodes[3], &nodes[2], &nodes[1])[..], payment_hash_2);
1262 claim_payment(&nodes[1], &vec!(&nodes[2], &nodes[3], &nodes[1])[..], payment_preimage_1, 1_000_000);
1264 // Add a duplicate new channel from 2 to 4
1265 let chan_5 = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known());
1267 // Send some payments across both channels
1268 let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0;
1269 let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0;
1270 let payment_preimage_5 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0;
1273 route_over_limit(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000);
1274 let events = nodes[0].node.get_and_clear_pending_msg_events();
1275 assert_eq!(events.len(), 0);
1276 nodes[0].logger.assert_log_regex("lightning::ln::channelmanager".to_string(), regex::Regex::new(r"Cannot send value that would put us over the max HTLC value in flight our peer will accept \(\d+\)").unwrap(), 1);
1278 //TODO: Test that routes work again here as we've been notified that the channel is full
1280 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_3, 3_000_000);
1281 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_4, 3_000_000);
1282 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_5, 3_000_000);
1284 // Close down the channels...
1285 close_channel(&nodes[0], &nodes[1], &chan_1.2, chan_1.3, true);
1286 close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, false);
1287 close_channel(&nodes[2], &nodes[3], &chan_3.2, chan_3.3, true);
1288 close_channel(&nodes[1], &nodes[3], &chan_4.2, chan_4.3, false);
1289 close_channel(&nodes[1], &nodes[3], &chan_5.2, chan_5.3, false);
1293 fn holding_cell_htlc_counting() {
1294 // Tests that HTLCs in the holding cell count towards the pending HTLC limits on outbound HTLCs
1295 // to ensure we don't end up with HTLCs sitting around in our holding cell for several
1296 // commitment dance rounds.
1297 let chanmon_cfgs = create_chanmon_cfgs(3);
1298 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1299 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1300 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1301 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
1302 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
1303 let logger = test_utils::TestLogger::new();
1305 let mut payments = Vec::new();
1306 for _ in 0..::ln::channel::OUR_MAX_HTLCS {
1307 let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[0]);
1308 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
1309 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
1310 nodes[1].node.send_payment(&route, payment_hash, &None).unwrap();
1311 payments.push((payment_preimage, payment_hash));
1313 check_added_monitors!(nodes[1], 1);
1315 let mut events = nodes[1].node.get_and_clear_pending_msg_events();
1316 assert_eq!(events.len(), 1);
1317 let initial_payment_event = SendEvent::from_event(events.pop().unwrap());
1318 assert_eq!(initial_payment_event.node_id, nodes[2].node.get_our_node_id());
1320 // There is now one HTLC in an outbound commitment transaction and (OUR_MAX_HTLCS - 1) HTLCs in
1321 // the holding cell waiting on B's RAA to send. At this point we should not be able to add
1323 let (_, payment_hash_1) = get_payment_preimage_hash!(nodes[0]);
1325 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
1326 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
1327 unwrap_send_err!(nodes[1].node.send_payment(&route, payment_hash_1, &None), true, APIError::ChannelUnavailable { ref err },
1328 assert!(regex::Regex::new(r"Cannot push more than their max accepted HTLCs \(\d+\)").unwrap().is_match(err)));
1329 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1330 nodes[1].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot push more than their max accepted HTLCs".to_string(), 1);
1333 // This should also be true if we try to forward a payment.
1334 let (_, payment_hash_2) = get_payment_preimage_hash!(nodes[0]);
1336 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1337 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
1338 nodes[0].node.send_payment(&route, payment_hash_2, &None).unwrap();
1339 check_added_monitors!(nodes[0], 1);
1342 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1343 assert_eq!(events.len(), 1);
1344 let payment_event = SendEvent::from_event(events.pop().unwrap());
1345 assert_eq!(payment_event.node_id, nodes[1].node.get_our_node_id());
1347 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
1348 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
1349 // We have to forward pending HTLCs twice - once tries to forward the payment forward (and
1350 // fails), the second will process the resulting failure and fail the HTLC backward.
1351 expect_pending_htlcs_forwardable!(nodes[1]);
1352 expect_pending_htlcs_forwardable!(nodes[1]);
1353 check_added_monitors!(nodes[1], 1);
1355 let bs_fail_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
1356 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &bs_fail_updates.update_fail_htlcs[0]);
1357 commitment_signed_dance!(nodes[0], nodes[1], bs_fail_updates.commitment_signed, false, true);
1359 let events = nodes[0].node.get_and_clear_pending_msg_events();
1360 assert_eq!(events.len(), 1);
1362 MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelUpdateMessage { ref msg }} => {
1363 assert_eq!(msg.contents.short_channel_id, chan_2.0.contents.short_channel_id);
1365 _ => panic!("Unexpected event"),
1368 expect_payment_failed!(nodes[0], payment_hash_2, false);
1370 // Now forward all the pending HTLCs and claim them back
1371 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &initial_payment_event.msgs[0]);
1372 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &initial_payment_event.commitment_msg);
1373 check_added_monitors!(nodes[2], 1);
1375 let (bs_revoke_and_ack, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[2], nodes[1].node.get_our_node_id());
1376 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_revoke_and_ack);
1377 check_added_monitors!(nodes[1], 1);
1378 let as_updates = get_htlc_update_msgs!(nodes[1], nodes[2].node.get_our_node_id());
1380 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &bs_commitment_signed);
1381 check_added_monitors!(nodes[1], 1);
1382 let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
1384 for ref update in as_updates.update_add_htlcs.iter() {
1385 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), update);
1387 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &as_updates.commitment_signed);
1388 check_added_monitors!(nodes[2], 1);
1389 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa);
1390 check_added_monitors!(nodes[2], 1);
1391 let (bs_revoke_and_ack, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[2], nodes[1].node.get_our_node_id());
1393 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_revoke_and_ack);
1394 check_added_monitors!(nodes[1], 1);
1395 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &bs_commitment_signed);
1396 check_added_monitors!(nodes[1], 1);
1397 let as_final_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
1399 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_final_raa);
1400 check_added_monitors!(nodes[2], 1);
1402 expect_pending_htlcs_forwardable!(nodes[2]);
1404 let events = nodes[2].node.get_and_clear_pending_events();
1405 assert_eq!(events.len(), payments.len());
1406 for (event, &(_, ref hash)) in events.iter().zip(payments.iter()) {
1408 &Event::PaymentReceived { ref payment_hash, .. } => {
1409 assert_eq!(*payment_hash, *hash);
1411 _ => panic!("Unexpected event"),
1415 for (preimage, _) in payments.drain(..) {
1416 claim_payment(&nodes[1], &[&nodes[2]], preimage, 100_000);
1419 send_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1000000, 1_000_000);
1423 fn duplicate_htlc_test() {
1424 // Test that we accept duplicate payment_hash HTLCs across the network and that
1425 // claiming/failing them are all separate and don't affect each other
1426 let chanmon_cfgs = create_chanmon_cfgs(6);
1427 let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
1428 let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
1429 let mut nodes = create_network(6, &node_cfgs, &node_chanmgrs);
1431 // Create some initial channels to route via 3 to 4/5 from 0/1/2
1432 create_announced_chan_between_nodes(&nodes, 0, 3, InitFeatures::known(), InitFeatures::known());
1433 create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known());
1434 create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known());
1435 create_announced_chan_between_nodes(&nodes, 3, 4, InitFeatures::known(), InitFeatures::known());
1436 create_announced_chan_between_nodes(&nodes, 3, 5, InitFeatures::known(), InitFeatures::known());
1438 let (payment_preimage, payment_hash) = route_payment(&nodes[0], &vec!(&nodes[3], &nodes[4])[..], 1000000);
1440 *nodes[0].network_payment_count.borrow_mut() -= 1;
1441 assert_eq!(route_payment(&nodes[1], &vec!(&nodes[3])[..], 1000000).0, payment_preimage);
1443 *nodes[0].network_payment_count.borrow_mut() -= 1;
1444 assert_eq!(route_payment(&nodes[2], &vec!(&nodes[3], &nodes[5])[..], 1000000).0, payment_preimage);
1446 claim_payment(&nodes[0], &vec!(&nodes[3], &nodes[4])[..], payment_preimage, 1_000_000);
1447 fail_payment(&nodes[2], &vec!(&nodes[3], &nodes[5])[..], payment_hash);
1448 claim_payment(&nodes[1], &vec!(&nodes[3])[..], payment_preimage, 1_000_000);
1452 fn test_duplicate_htlc_different_direction_onchain() {
1453 // Test that ChannelMonitor doesn't generate 2 preimage txn
1454 // when we have 2 HTLCs with same preimage that go across a node
1455 // in opposite directions.
1456 let chanmon_cfgs = create_chanmon_cfgs(2);
1457 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1458 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1459 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1461 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
1462 let logger = test_utils::TestLogger::new();
1465 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
1467 let (payment_preimage, payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 900_000);
1469 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
1470 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), None, &Vec::new(), 800_000, TEST_FINAL_CLTV, &logger).unwrap();
1471 send_along_route_with_hash(&nodes[1], route, &vec!(&nodes[0])[..], 800_000, payment_hash);
1473 // Provide preimage to node 0 by claiming payment
1474 nodes[0].node.claim_funds(payment_preimage, &None, 800_000);
1475 check_added_monitors!(nodes[0], 1);
1477 // Broadcast node 1 commitment txn
1478 let remote_txn = get_local_commitment_txn!(nodes[1], chan_1.2);
1480 assert_eq!(remote_txn[0].output.len(), 4); // 1 local, 1 remote, 1 htlc inbound, 1 htlc outbound
1481 let mut has_both_htlcs = 0; // check htlcs match ones committed
1482 for outp in remote_txn[0].output.iter() {
1483 if outp.value == 800_000 / 1000 {
1484 has_both_htlcs += 1;
1485 } else if outp.value == 900_000 / 1000 {
1486 has_both_htlcs += 1;
1489 assert_eq!(has_both_htlcs, 2);
1491 let header = BlockHeader { version: 0x2000_0000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
1492 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![remote_txn[0].clone()] }, 1);
1493 check_added_monitors!(nodes[0], 1);
1495 // Check we only broadcast 1 timeout tx
1496 let claim_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
1497 let htlc_pair = if claim_txn[0].output[0].value == 800_000 / 1000 { (claim_txn[0].clone(), claim_txn[1].clone()) } else { (claim_txn[1].clone(), claim_txn[0].clone()) };
1498 assert_eq!(claim_txn.len(), 5);
1499 check_spends!(claim_txn[2], chan_1.3);
1500 check_spends!(claim_txn[3], claim_txn[2]);
1501 assert_eq!(htlc_pair.0.input.len(), 1);
1502 assert_eq!(htlc_pair.0.input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); // HTLC 1 <--> 0, preimage tx
1503 check_spends!(htlc_pair.0, remote_txn[0]);
1504 assert_eq!(htlc_pair.1.input.len(), 1);
1505 assert_eq!(htlc_pair.1.input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); // HTLC 0 <--> 1, timeout tx
1506 check_spends!(htlc_pair.1, remote_txn[0]);
1508 let events = nodes[0].node.get_and_clear_pending_msg_events();
1509 assert_eq!(events.len(), 2);
1512 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
1513 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, .. } } => {
1514 assert!(update_add_htlcs.is_empty());
1515 assert!(update_fail_htlcs.is_empty());
1516 assert_eq!(update_fulfill_htlcs.len(), 1);
1517 assert!(update_fail_malformed_htlcs.is_empty());
1518 assert_eq!(nodes[1].node.get_our_node_id(), *node_id);
1520 _ => panic!("Unexpected event"),
1526 fn test_basic_channel_reserve() {
1527 let chanmon_cfgs = create_chanmon_cfgs(2);
1528 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1529 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1530 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1531 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1532 let logger = test_utils::TestLogger::new();
1534 let chan_stat = get_channel_value_stat!(nodes[0], chan.2);
1535 let channel_reserve = chan_stat.channel_reserve_msat;
1537 // The 2* and +1 are for the fee spike reserve.
1538 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
1539 let commit_tx_fee = 2 * commit_tx_fee_msat(get_feerate!(nodes[0], chan.2), 1 + 1);
1540 let max_can_send = 5000000 - channel_reserve - commit_tx_fee;
1541 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1542 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes.last().unwrap().node.get_our_node_id(), None, &Vec::new(), max_can_send + 1, TEST_FINAL_CLTV, &logger).unwrap();
1543 let err = nodes[0].node.send_payment(&route, our_payment_hash, &None).err().unwrap();
1545 PaymentSendFailure::AllFailedRetrySafe(ref fails) => {
1547 &APIError::ChannelUnavailable{ref err} =>
1548 assert!(regex::Regex::new(r"Cannot send value that would put us under local channel reserve value \(\d+\)").unwrap().is_match(err)),
1549 _ => panic!("Unexpected error variant"),
1552 _ => panic!("Unexpected error variant"),
1554 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1555 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot send value that would put us under local channel reserve value".to_string(), 1);
1557 send_payment(&nodes[0], &vec![&nodes[1]], max_can_send, max_can_send);
1561 fn test_fee_spike_violation_fails_htlc() {
1562 let chanmon_cfgs = create_chanmon_cfgs(2);
1563 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1564 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1565 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1566 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1567 let logger = test_utils::TestLogger::new();
1569 macro_rules! get_route_and_payment_hash {
1570 ($recv_value: expr) => {{
1571 let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[1]);
1572 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler.network_graph.read().unwrap();
1573 let route = get_route(&nodes[0].node.get_our_node_id(), net_graph_msg_handler, &nodes.last().unwrap().node.get_our_node_id(), None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
1574 (route, payment_hash, payment_preimage)
1578 let (route, payment_hash, _) = get_route_and_payment_hash!(3460001);
1579 // Need to manually create the update_add_htlc message to go around the channel reserve check in send_htlc()
1580 let secp_ctx = Secp256k1::new();
1581 let session_priv = SecretKey::from_slice(&[42; 32]).expect("RNG is bad!");
1583 let cur_height = nodes[1].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
1585 let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route.paths[0], &session_priv).unwrap();
1586 let (onion_payloads, htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route.paths[0], 3460001, &None, cur_height).unwrap();
1587 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &payment_hash);
1588 let msg = msgs::UpdateAddHTLC {
1591 amount_msat: htlc_msat,
1592 payment_hash: payment_hash,
1593 cltv_expiry: htlc_cltv,
1594 onion_routing_packet: onion_packet,
1597 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg);
1599 // Now manually create the commitment_signed message corresponding to the update_add
1600 // nodes[0] just sent. In the code for construction of this message, "local" refers
1601 // to the sender of the message, and "remote" refers to the receiver.
1603 let feerate_per_kw = get_feerate!(nodes[0], chan.2);
1605 const INITIAL_COMMITMENT_NUMBER: u64 = (1 << 48) - 1;
1607 // Get the EnforcingChannelKeys for each channel, which will be used to (1) get the keys
1608 // needed to sign the new commitment tx and (2) sign the new commitment tx.
1609 let (local_revocation_basepoint, local_htlc_basepoint, local_payment_point, local_secret, local_secret2) = {
1610 let chan_lock = nodes[0].node.channel_state.lock().unwrap();
1611 let local_chan = chan_lock.by_id.get(&chan.2).unwrap();
1612 let chan_keys = local_chan.get_local_keys();
1613 let pubkeys = chan_keys.pubkeys();
1614 (pubkeys.revocation_basepoint, pubkeys.htlc_basepoint, pubkeys.payment_point,
1615 chan_keys.commitment_secret(INITIAL_COMMITMENT_NUMBER), chan_keys.commitment_secret(INITIAL_COMMITMENT_NUMBER - 2))
1617 let (remote_delayed_payment_basepoint, remote_htlc_basepoint, remote_payment_point, remote_secret1) = {
1618 let chan_lock = nodes[1].node.channel_state.lock().unwrap();
1619 let remote_chan = chan_lock.by_id.get(&chan.2).unwrap();
1620 let chan_keys = remote_chan.get_local_keys();
1621 let pubkeys = chan_keys.pubkeys();
1622 (pubkeys.delayed_payment_basepoint, pubkeys.htlc_basepoint, pubkeys.payment_point,
1623 chan_keys.commitment_secret(INITIAL_COMMITMENT_NUMBER - 1))
1626 // Assemble the set of keys we can use for signatures for our commitment_signed message.
1627 let commitment_secret = SecretKey::from_slice(&remote_secret1).unwrap();
1628 let per_commitment_point = PublicKey::from_secret_key(&secp_ctx, &commitment_secret);
1629 let commit_tx_keys = chan_utils::TxCreationKeys::new(&secp_ctx, &per_commitment_point, &remote_delayed_payment_basepoint,
1630 &remote_htlc_basepoint, &local_revocation_basepoint, &local_htlc_basepoint).unwrap();
1632 // Build the remote commitment transaction so we can sign it, and then later use the
1633 // signature for the commitment_signed message.
1634 let local_chan_balance = 1313;
1635 let static_payment_pk = local_payment_point.serialize();
1636 let remote_commit_tx_output = TxOut {
1637 script_pubkey: Builder::new().push_opcode(opcodes::all::OP_PUSHBYTES_0)
1638 .push_slice(&WPubkeyHash::hash(&static_payment_pk)[..])
1640 value: local_chan_balance as u64
1643 let local_commit_tx_output = TxOut {
1644 script_pubkey: chan_utils::get_revokeable_redeemscript(&commit_tx_keys.revocation_key,
1646 &commit_tx_keys.a_delayed_payment_key).to_v0_p2wsh(),
1650 let accepted_htlc_info = chan_utils::HTLCOutputInCommitment {
1652 amount_msat: 3460001,
1653 cltv_expiry: htlc_cltv,
1654 payment_hash: payment_hash,
1655 transaction_output_index: Some(1),
1658 let htlc_output = TxOut {
1659 script_pubkey: chan_utils::get_htlc_redeemscript(&accepted_htlc_info, &commit_tx_keys).to_v0_p2wsh(),
1660 value: 3460001 / 1000
1663 let commit_tx_obscure_factor = {
1664 let mut sha = Sha256::engine();
1665 let remote_payment_point = &remote_payment_point.serialize();
1666 sha.input(&local_payment_point.serialize());
1667 sha.input(remote_payment_point);
1668 let res = Sha256::from_engine(sha).into_inner();
1670 ((res[26] as u64) << 5*8) |
1671 ((res[27] as u64) << 4*8) |
1672 ((res[28] as u64) << 3*8) |
1673 ((res[29] as u64) << 2*8) |
1674 ((res[30] as u64) << 1*8) |
1675 ((res[31] as u64) << 0*8)
1677 let commitment_number = 1;
1678 let obscured_commitment_transaction_number = commit_tx_obscure_factor ^ commitment_number;
1679 let lock_time = ((0x20 as u32) << 8*3) | ((obscured_commitment_transaction_number & 0xffffffu64) as u32);
1681 previous_output: BitcoinOutPoint { txid: chan.3.txid(), vout: 0 },
1682 script_sig: Script::new(),
1683 sequence: ((0x80 as u32) << 8*3) | ((obscured_commitment_transaction_number >> 3*8) as u32),
1684 witness: Vec::new(),
1687 let commit_tx = Transaction {
1691 output: vec![remote_commit_tx_output, htlc_output, local_commit_tx_output],
1694 let local_chan_lock = nodes[0].node.channel_state.lock().unwrap();
1695 let local_chan = local_chan_lock.by_id.get(&chan.2).unwrap();
1696 let local_chan_keys = local_chan.get_local_keys();
1697 local_chan_keys.sign_remote_commitment(feerate_per_kw, &commit_tx, &commit_tx_keys, &[&accepted_htlc_info],
1698 BREAKDOWN_TIMEOUT, &secp_ctx).unwrap()
1701 let commit_signed_msg = msgs::CommitmentSigned {
1704 htlc_signatures: res.1
1707 // Send the commitment_signed message to the nodes[1].
1708 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &commit_signed_msg);
1709 let _ = nodes[1].node.get_and_clear_pending_msg_events();
1711 // Send the RAA to nodes[1].
1712 let per_commitment_secret = local_secret;
1713 let next_secret = SecretKey::from_slice(&local_secret2).unwrap();
1714 let next_per_commitment_point = PublicKey::from_secret_key(&secp_ctx, &next_secret);
1715 let raa_msg = msgs::RevokeAndACK{ channel_id: chan.2, per_commitment_secret, next_per_commitment_point};
1716 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &raa_msg);
1718 let events = nodes[1].node.get_and_clear_pending_msg_events();
1719 assert_eq!(events.len(), 1);
1720 // Make sure the HTLC failed in the way we expect.
1722 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fail_htlcs, .. }, .. } => {
1723 assert_eq!(update_fail_htlcs.len(), 1);
1724 update_fail_htlcs[0].clone()
1726 _ => panic!("Unexpected event"),
1728 nodes[1].logger.assert_log("lightning::ln::channel".to_string(), "Attempting to fail HTLC due to fee spike buffer violation".to_string(), 1);
1730 check_added_monitors!(nodes[1], 2);
1734 fn test_chan_reserve_violation_outbound_htlc_inbound_chan() {
1735 let mut chanmon_cfgs = create_chanmon_cfgs(2);
1736 // Set the fee rate for the channel very high, to the point where the fundee
1737 // sending any amount would result in a channel reserve violation. In this test
1738 // we check that we would be prevented from sending an HTLC in this situation.
1739 chanmon_cfgs[0].fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 6000 };
1740 chanmon_cfgs[1].fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 6000 };
1741 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1742 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1743 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1744 let _ = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1745 let logger = test_utils::TestLogger::new();
1747 macro_rules! get_route_and_payment_hash {
1748 ($recv_value: expr) => {{
1749 let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[1]);
1750 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
1751 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes.first().unwrap().node.get_our_node_id(), None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
1752 (route, payment_hash, payment_preimage)
1756 let (route, our_payment_hash, _) = get_route_and_payment_hash!(1000);
1757 unwrap_send_err!(nodes[1].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
1758 assert_eq!(err, "Cannot send value that would put them under remote channel reserve value"));
1759 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
1760 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Cannot send value that would put them under remote channel reserve value".to_string(), 1);
1764 fn test_chan_reserve_violation_inbound_htlc_outbound_channel() {
1765 let mut chanmon_cfgs = create_chanmon_cfgs(2);
1766 // Set the fee rate for the channel very high, to the point where the funder
1767 // receiving 1 update_add_htlc would result in them closing the channel due
1768 // to channel reserve violation. This close could also happen if the fee went
1769 // up a more realistic amount, but many HTLCs were outstanding at the time of
1770 // the update_add_htlc.
1771 chanmon_cfgs[0].fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 6000 };
1772 chanmon_cfgs[1].fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 6000 };
1773 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1774 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1775 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1776 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1777 let logger = test_utils::TestLogger::new();
1779 macro_rules! get_route_and_payment_hash {
1780 ($recv_value: expr) => {{
1781 let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[1]);
1782 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1783 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes.first().unwrap().node.get_our_node_id(), None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
1784 (route, payment_hash, payment_preimage)
1788 let (route, payment_hash, _) = get_route_and_payment_hash!(1000);
1789 // Need to manually create the update_add_htlc message to go around the channel reserve check in send_htlc()
1790 let secp_ctx = Secp256k1::new();
1791 let session_priv = SecretKey::from_slice(&[42; 32]).unwrap();
1792 let cur_height = nodes[1].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
1793 let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route.paths[0], &session_priv).unwrap();
1794 let (onion_payloads, htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route.paths[0], 1000, &None, cur_height).unwrap();
1795 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &payment_hash);
1796 let msg = msgs::UpdateAddHTLC {
1799 amount_msat: htlc_msat + 1,
1800 payment_hash: payment_hash,
1801 cltv_expiry: htlc_cltv,
1802 onion_routing_packet: onion_packet,
1805 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &msg);
1806 // Check that the payment failed and the channel is closed in response to the malicious UpdateAdd.
1807 nodes[0].logger.assert_log("lightning::ln::channelmanager".to_string(), "Cannot receive value that would put us under local channel reserve value".to_string(), 1);
1808 assert_eq!(nodes[0].node.list_channels().len(), 0);
1809 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
1810 assert_eq!(err_msg.data, "Cannot receive value that would put us under local channel reserve value");
1811 check_added_monitors!(nodes[0], 1);
1815 fn test_chan_reserve_violation_inbound_htlc_inbound_chan() {
1816 let chanmon_cfgs = create_chanmon_cfgs(3);
1817 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1818 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1819 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1820 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1821 let _ = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
1822 let logger = test_utils::TestLogger::new();
1824 macro_rules! get_route_and_payment_hash {
1825 ($recv_value: expr) => {{
1826 let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[0]);
1827 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1828 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes.last().unwrap().node.get_our_node_id(), None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
1829 (route, payment_hash, payment_preimage)
1834 let total_routing_fee_msat = (nodes.len() - 2) as u64 * feemsat;
1835 let chan_stat = get_channel_value_stat!(nodes[0], chan.2);
1836 let feerate = get_feerate!(nodes[0], chan.2);
1838 // Add a 2* and +1 for the fee spike reserve.
1839 let commit_tx_fee_2_htlc = 2*commit_tx_fee_msat(feerate, 2 + 1);
1840 let recv_value_1 = (chan_stat.value_to_self_msat - chan_stat.channel_reserve_msat - total_routing_fee_msat - commit_tx_fee_2_htlc)/2;
1841 let amt_msat_1 = recv_value_1 + total_routing_fee_msat;
1843 // Add a pending HTLC.
1844 let (route_1, our_payment_hash_1, _) = get_route_and_payment_hash!(amt_msat_1);
1845 let payment_event_1 = {
1846 nodes[0].node.send_payment(&route_1, our_payment_hash_1, &None).unwrap();
1847 check_added_monitors!(nodes[0], 1);
1849 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1850 assert_eq!(events.len(), 1);
1851 SendEvent::from_event(events.remove(0))
1853 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event_1.msgs[0]);
1855 // Attempt to trigger a channel reserve violation --> payment failure.
1856 let commit_tx_fee_2_htlcs = commit_tx_fee_msat(feerate, 2);
1857 let recv_value_2 = chan_stat.value_to_self_msat - amt_msat_1 - chan_stat.channel_reserve_msat - total_routing_fee_msat - commit_tx_fee_2_htlcs + 1;
1858 let amt_msat_2 = recv_value_2 + total_routing_fee_msat;
1859 let (route_2, _, _) = get_route_and_payment_hash!(amt_msat_2);
1861 // Need to manually create the update_add_htlc message to go around the channel reserve check in send_htlc()
1862 let secp_ctx = Secp256k1::new();
1863 let session_priv = SecretKey::from_slice(&[42; 32]).unwrap();
1864 let cur_height = nodes[0].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
1865 let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route_2.paths[0], &session_priv).unwrap();
1866 let (onion_payloads, htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route_2.paths[0], recv_value_2, &None, cur_height).unwrap();
1867 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &our_payment_hash_1);
1868 let msg = msgs::UpdateAddHTLC {
1871 amount_msat: htlc_msat + 1,
1872 payment_hash: our_payment_hash_1,
1873 cltv_expiry: htlc_cltv,
1874 onion_routing_packet: onion_packet,
1877 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg);
1878 // Check that the payment failed and the channel is closed in response to the malicious UpdateAdd.
1879 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Remote HTLC add would put them under remote reserve value".to_string(), 1);
1880 assert_eq!(nodes[1].node.list_channels().len(), 1);
1881 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
1882 assert_eq!(err_msg.data, "Remote HTLC add would put them under remote reserve value");
1883 check_added_monitors!(nodes[1], 1);
1886 fn commit_tx_fee_msat(feerate: u32, num_htlcs: u64) -> u64 {
1887 (COMMITMENT_TX_BASE_WEIGHT + num_htlcs * COMMITMENT_TX_WEIGHT_PER_HTLC) * feerate as u64 / 1000 * 1000
1891 fn test_channel_reserve_holding_cell_htlcs() {
1892 let chanmon_cfgs = create_chanmon_cfgs(3);
1893 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
1894 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
1895 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
1896 let chan_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 190000, 1001, InitFeatures::known(), InitFeatures::known());
1897 let chan_2 = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 190000, 1001, InitFeatures::known(), InitFeatures::known());
1898 let logger = test_utils::TestLogger::new();
1900 let mut stat01 = get_channel_value_stat!(nodes[0], chan_1.2);
1901 let mut stat11 = get_channel_value_stat!(nodes[1], chan_1.2);
1903 let mut stat12 = get_channel_value_stat!(nodes[1], chan_2.2);
1904 let mut stat22 = get_channel_value_stat!(nodes[2], chan_2.2);
1906 macro_rules! get_route_and_payment_hash {
1907 ($recv_value: expr) => {{
1908 let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[0]);
1909 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
1910 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes.last().unwrap().node.get_our_node_id(), None, &Vec::new(), $recv_value, TEST_FINAL_CLTV, &logger).unwrap();
1911 (route, payment_hash, payment_preimage)
1915 macro_rules! expect_forward {
1917 let mut events = $node.node.get_and_clear_pending_msg_events();
1918 assert_eq!(events.len(), 1);
1919 check_added_monitors!($node, 1);
1920 let payment_event = SendEvent::from_event(events.remove(0));
1925 let feemsat = 239; // somehow we know?
1926 let total_fee_msat = (nodes.len() - 2) as u64 * feemsat;
1927 let feerate = get_feerate!(nodes[0], chan_1.2);
1929 let recv_value_0 = stat01.their_max_htlc_value_in_flight_msat - total_fee_msat;
1931 // attempt to send amt_msat > their_max_htlc_value_in_flight_msat
1933 let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_0 + 1);
1934 assert!(route.paths[0].iter().rev().skip(1).all(|h| h.fee_msat == feemsat));
1935 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
1936 assert!(regex::Regex::new(r"Cannot send value that would put us over the max HTLC value in flight our peer will accept \(\d+\)").unwrap().is_match(err)));
1937 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
1938 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot send value that would put us over the max HTLC value in flight our peer will accept".to_string(), 1);
1941 // channel reserve is bigger than their_max_htlc_value_in_flight_msat so loop to deplete
1942 // nodes[0]'s wealth
1944 let amt_msat = recv_value_0 + total_fee_msat;
1945 // 3 for the 3 HTLCs that will be sent, 2* and +1 for the fee spike reserve.
1946 // Also, ensure that each payment has enough to be over the dust limit to
1947 // ensure it'll be included in each commit tx fee calculation.
1948 let commit_tx_fee_all_htlcs = 2*commit_tx_fee_msat(feerate, 3 + 1);
1949 let ensure_htlc_amounts_above_dust_buffer = 3 * (stat01.their_dust_limit_msat + 1000);
1950 if stat01.value_to_self_msat < stat01.channel_reserve_msat + commit_tx_fee_all_htlcs + ensure_htlc_amounts_above_dust_buffer + amt_msat {
1953 send_payment(&nodes[0], &vec![&nodes[1], &nodes[2]][..], recv_value_0, recv_value_0);
1955 let (stat01_, stat11_, stat12_, stat22_) = (
1956 get_channel_value_stat!(nodes[0], chan_1.2),
1957 get_channel_value_stat!(nodes[1], chan_1.2),
1958 get_channel_value_stat!(nodes[1], chan_2.2),
1959 get_channel_value_stat!(nodes[2], chan_2.2),
1962 assert_eq!(stat01_.value_to_self_msat, stat01.value_to_self_msat - amt_msat);
1963 assert_eq!(stat11_.value_to_self_msat, stat11.value_to_self_msat + amt_msat);
1964 assert_eq!(stat12_.value_to_self_msat, stat12.value_to_self_msat - (amt_msat - feemsat));
1965 assert_eq!(stat22_.value_to_self_msat, stat22.value_to_self_msat + (amt_msat - feemsat));
1966 stat01 = stat01_; stat11 = stat11_; stat12 = stat12_; stat22 = stat22_;
1969 // adding pending output.
1970 // 2* and +1 HTLCs on the commit tx fee for the fee spike reserve.
1971 // The reason we're dividing by two here is as follows: the dividend is the total outbound liquidity
1972 // after fees, the channel reserve, and the fee spike buffer are removed. We eventually want to
1973 // divide this quantity into 3 portions, that will each be sent in an HTLC. This allows us
1974 // to test channel channel reserve policy at the edges of what amount is sendable, i.e.
1975 // cases where 1 msat over X amount will cause a payment failure, but anything less than
1976 // that can be sent successfully. So, dividing by two is a somewhat arbitrary way of getting
1977 // the amount of the first of these aforementioned 3 payments. The reason we split into 3 payments
1978 // is to test the behavior of the holding cell with respect to channel reserve and commit tx fee
1980 let commit_tx_fee_2_htlcs = 2*commit_tx_fee_msat(feerate, 2 + 1);
1981 let recv_value_1 = (stat01.value_to_self_msat - stat01.channel_reserve_msat - total_fee_msat - commit_tx_fee_2_htlcs)/2;
1982 let amt_msat_1 = recv_value_1 + total_fee_msat;
1984 let (route_1, our_payment_hash_1, our_payment_preimage_1) = get_route_and_payment_hash!(recv_value_1);
1985 let payment_event_1 = {
1986 nodes[0].node.send_payment(&route_1, our_payment_hash_1, &None).unwrap();
1987 check_added_monitors!(nodes[0], 1);
1989 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
1990 assert_eq!(events.len(), 1);
1991 SendEvent::from_event(events.remove(0))
1993 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event_1.msgs[0]);
1995 // channel reserve test with htlc pending output > 0
1996 let recv_value_2 = stat01.value_to_self_msat - amt_msat_1 - stat01.channel_reserve_msat - total_fee_msat - commit_tx_fee_2_htlcs;
1998 let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_2 + 1);
1999 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
2000 assert!(regex::Regex::new(r"Cannot send value that would put us under local channel reserve value \(\d+\)").unwrap().is_match(err)));
2001 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2004 // split the rest to test holding cell
2005 let commit_tx_fee_3_htlcs = 2*commit_tx_fee_msat(feerate, 3 + 1);
2006 let additional_htlc_cost_msat = commit_tx_fee_3_htlcs - commit_tx_fee_2_htlcs;
2007 let recv_value_21 = recv_value_2/2 - additional_htlc_cost_msat/2;
2008 let recv_value_22 = recv_value_2 - recv_value_21 - total_fee_msat - additional_htlc_cost_msat;
2010 let stat = get_channel_value_stat!(nodes[0], chan_1.2);
2011 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 + commit_tx_fee_3_htlcs), stat.channel_reserve_msat);
2014 // now see if they go through on both sides
2015 let (route_21, our_payment_hash_21, our_payment_preimage_21) = get_route_and_payment_hash!(recv_value_21);
2016 // but this will stuck in the holding cell
2017 nodes[0].node.send_payment(&route_21, our_payment_hash_21, &None).unwrap();
2018 check_added_monitors!(nodes[0], 0);
2019 let events = nodes[0].node.get_and_clear_pending_events();
2020 assert_eq!(events.len(), 0);
2022 // test with outbound holding cell amount > 0
2024 let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_22+1);
2025 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
2026 assert!(regex::Regex::new(r"Cannot send value that would put us under local channel reserve value \(\d+\)").unwrap().is_match(err)));
2027 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2028 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot send value that would put us under local channel reserve value".to_string(), 2);
2031 let (route_22, our_payment_hash_22, our_payment_preimage_22) = get_route_and_payment_hash!(recv_value_22);
2032 // this will also stuck in the holding cell
2033 nodes[0].node.send_payment(&route_22, our_payment_hash_22, &None).unwrap();
2034 check_added_monitors!(nodes[0], 0);
2035 assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
2036 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2038 // flush the pending htlc
2039 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event_1.commitment_msg);
2040 let (as_revoke_and_ack, as_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
2041 check_added_monitors!(nodes[1], 1);
2043 // the pending htlc should be promoted to committed
2044 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_revoke_and_ack);
2045 check_added_monitors!(nodes[0], 1);
2046 let commitment_update_2 = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2048 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &as_commitment_signed);
2049 let bs_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2050 // No commitment_signed so get_event_msg's assert(len == 1) passes
2051 check_added_monitors!(nodes[0], 1);
2053 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &bs_revoke_and_ack);
2054 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2055 check_added_monitors!(nodes[1], 1);
2057 expect_pending_htlcs_forwardable!(nodes[1]);
2059 let ref payment_event_11 = expect_forward!(nodes[1]);
2060 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_11.msgs[0]);
2061 commitment_signed_dance!(nodes[2], nodes[1], payment_event_11.commitment_msg, false);
2063 expect_pending_htlcs_forwardable!(nodes[2]);
2064 expect_payment_received!(nodes[2], our_payment_hash_1, recv_value_1);
2066 // flush the htlcs in the holding cell
2067 assert_eq!(commitment_update_2.update_add_htlcs.len(), 2);
2068 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &commitment_update_2.update_add_htlcs[0]);
2069 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &commitment_update_2.update_add_htlcs[1]);
2070 commitment_signed_dance!(nodes[1], nodes[0], &commitment_update_2.commitment_signed, false);
2071 expect_pending_htlcs_forwardable!(nodes[1]);
2073 let ref payment_event_3 = expect_forward!(nodes[1]);
2074 assert_eq!(payment_event_3.msgs.len(), 2);
2075 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_3.msgs[0]);
2076 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_3.msgs[1]);
2078 commitment_signed_dance!(nodes[2], nodes[1], &payment_event_3.commitment_msg, false);
2079 expect_pending_htlcs_forwardable!(nodes[2]);
2081 let events = nodes[2].node.get_and_clear_pending_events();
2082 assert_eq!(events.len(), 2);
2084 Event::PaymentReceived { ref payment_hash, ref payment_secret, amt } => {
2085 assert_eq!(our_payment_hash_21, *payment_hash);
2086 assert_eq!(*payment_secret, None);
2087 assert_eq!(recv_value_21, amt);
2089 _ => panic!("Unexpected event"),
2092 Event::PaymentReceived { ref payment_hash, ref payment_secret, amt } => {
2093 assert_eq!(our_payment_hash_22, *payment_hash);
2094 assert_eq!(None, *payment_secret);
2095 assert_eq!(recv_value_22, amt);
2097 _ => panic!("Unexpected event"),
2100 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_1, recv_value_1);
2101 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_21, recv_value_21);
2102 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_22, recv_value_22);
2104 let commit_tx_fee_0_htlcs = 2*commit_tx_fee_msat(feerate, 1);
2105 let recv_value_3 = commit_tx_fee_2_htlcs - commit_tx_fee_0_htlcs - total_fee_msat;
2107 let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_3 + 1);
2108 let err = nodes[0].node.send_payment(&route, our_payment_hash, &None).err().unwrap();
2110 PaymentSendFailure::AllFailedRetrySafe(ref fails) => {
2112 &APIError::ChannelUnavailable{ref err} =>
2113 assert!(regex::Regex::new(r"Cannot send value that would put us under local channel reserve value \(\d+\)").unwrap().is_match(err)),
2114 _ => panic!("Unexpected error variant"),
2117 _ => panic!("Unexpected error variant"),
2119 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
2120 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot send value that would put us under local channel reserve value".to_string(), 3);
2123 send_payment(&nodes[0], &vec![&nodes[1], &nodes[2]][..], recv_value_3, recv_value_3);
2125 let commit_tx_fee_1_htlc = 2*commit_tx_fee_msat(feerate, 1 + 1);
2126 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) - (recv_value_3 + total_fee_msat);
2127 let stat0 = get_channel_value_stat!(nodes[0], chan_1.2);
2128 assert_eq!(stat0.value_to_self_msat, expected_value_to_self);
2129 assert_eq!(stat0.value_to_self_msat, stat0.channel_reserve_msat + commit_tx_fee_1_htlc);
2131 let stat2 = get_channel_value_stat!(nodes[2], chan_2.2);
2132 assert_eq!(stat2.value_to_self_msat, stat22.value_to_self_msat + recv_value_1 + recv_value_21 + recv_value_22 + recv_value_3);
2136 fn channel_reserve_in_flight_removes() {
2137 // In cases where one side claims an HTLC, it thinks it has additional available funds that it
2138 // can send to its counterparty, but due to update ordering, the other side may not yet have
2139 // considered those HTLCs fully removed.
2140 // This tests that we don't count HTLCs which will not be included in the next remote
2141 // commitment transaction towards the reserve value (as it implies no commitment transaction
2142 // will be generated which violates the remote reserve value).
2143 // This was broken previously, and discovered by the chanmon_fail_consistency fuzz test.
2145 // * route two HTLCs from A to B (note that, at a high level, this test is checking that, when
2146 // you consider the values of both of these HTLCs, B may not send an HTLC back to A, but if
2147 // you only consider the value of the first HTLC, it may not),
2148 // * start routing a third HTLC from A to B,
2149 // * claim the first two HTLCs (though B will generate an update_fulfill for one, and put
2150 // the other claim in its holding cell, as it immediately goes into AwaitingRAA),
2151 // * deliver the first fulfill from B
2152 // * deliver the update_add and an RAA from A, resulting in B freeing the second holding cell
2154 // * deliver A's response CS and RAA.
2155 // This results in A having the second HTLC in AwaitingRemovedRemoteRevoke, but B having
2156 // removed it fully. B now has the push_msat plus the first two HTLCs in value.
2157 // * Now B happily sends another HTLC, potentially violating its reserve value from A's point
2158 // of view (if A counts the AwaitingRemovedRemoteRevoke HTLC).
2159 let chanmon_cfgs = create_chanmon_cfgs(2);
2160 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2161 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2162 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2163 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2164 let logger = test_utils::TestLogger::new();
2166 let b_chan_values = get_channel_value_stat!(nodes[1], chan_1.2);
2167 // Route the first two HTLCs.
2168 let (payment_preimage_1, _) = route_payment(&nodes[0], &[&nodes[1]], b_chan_values.channel_reserve_msat - b_chan_values.value_to_self_msat - 10000);
2169 let (payment_preimage_2, _) = route_payment(&nodes[0], &[&nodes[1]], 20000);
2171 // Start routing the third HTLC (this is just used to get everyone in the right state).
2172 let (payment_preimage_3, payment_hash_3) = get_payment_preimage_hash!(nodes[0]);
2174 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
2175 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
2176 nodes[0].node.send_payment(&route, payment_hash_3, &None).unwrap();
2177 check_added_monitors!(nodes[0], 1);
2178 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
2179 assert_eq!(events.len(), 1);
2180 SendEvent::from_event(events.remove(0))
2183 // Now claim both of the first two HTLCs on B's end, putting B in AwaitingRAA and generating an
2184 // initial fulfill/CS.
2185 assert!(nodes[1].node.claim_funds(payment_preimage_1, &None, b_chan_values.channel_reserve_msat - b_chan_values.value_to_self_msat - 10000));
2186 check_added_monitors!(nodes[1], 1);
2187 let bs_removes = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
2189 // This claim goes in B's holding cell, allowing us to have a pending B->A RAA which does not
2190 // remove the second HTLC when we send the HTLC back from B to A.
2191 assert!(nodes[1].node.claim_funds(payment_preimage_2, &None, 20000));
2192 check_added_monitors!(nodes[1], 1);
2193 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2195 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_removes.update_fulfill_htlcs[0]);
2196 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_removes.commitment_signed);
2197 check_added_monitors!(nodes[0], 1);
2198 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2199 expect_payment_sent!(nodes[0], payment_preimage_1);
2201 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_1.msgs[0]);
2202 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send_1.commitment_msg);
2203 check_added_monitors!(nodes[1], 1);
2204 // B is already AwaitingRAA, so cant generate a CS here
2205 let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2207 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
2208 check_added_monitors!(nodes[1], 1);
2209 let bs_cs = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
2211 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
2212 check_added_monitors!(nodes[0], 1);
2213 let as_cs = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2215 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_cs.commitment_signed);
2216 check_added_monitors!(nodes[1], 1);
2217 let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2219 // The second HTLCis removed, but as A is in AwaitingRAA it can't generate a CS here, so the
2220 // RAA that B generated above doesn't fully resolve the second HTLC from A's point of view.
2221 // However, the RAA A generates here *does* fully resolve the HTLC from B's point of view (as A
2222 // can no longer broadcast a commitment transaction with it and B has the preimage so can go
2223 // on-chain as necessary).
2224 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_cs.update_fulfill_htlcs[0]);
2225 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_cs.commitment_signed);
2226 check_added_monitors!(nodes[0], 1);
2227 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2228 expect_payment_sent!(nodes[0], payment_preimage_2);
2230 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
2231 check_added_monitors!(nodes[1], 1);
2232 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
2234 expect_pending_htlcs_forwardable!(nodes[1]);
2235 expect_payment_received!(nodes[1], payment_hash_3, 100000);
2237 // Note that as this RAA was generated before the delivery of the update_fulfill it shouldn't
2238 // resolve the second HTLC from A's point of view.
2239 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
2240 check_added_monitors!(nodes[0], 1);
2241 let as_cs = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2243 // Now that B doesn't have the second RAA anymore, but A still does, send a payment from B back
2244 // to A to ensure that A doesn't count the almost-removed HTLC in update_add processing.
2245 let (payment_preimage_4, payment_hash_4) = get_payment_preimage_hash!(nodes[1]);
2247 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
2248 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), None, &[], 10000, TEST_FINAL_CLTV, &logger).unwrap();
2249 nodes[1].node.send_payment(&route, payment_hash_4, &None).unwrap();
2250 check_added_monitors!(nodes[1], 1);
2251 let mut events = nodes[1].node.get_and_clear_pending_msg_events();
2252 assert_eq!(events.len(), 1);
2253 SendEvent::from_event(events.remove(0))
2256 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &send_2.msgs[0]);
2257 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &send_2.commitment_msg);
2258 check_added_monitors!(nodes[0], 1);
2259 let as_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
2261 // Now just resolve all the outstanding messages/HTLCs for completeness...
2263 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_cs.commitment_signed);
2264 check_added_monitors!(nodes[1], 1);
2265 let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2267 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_raa);
2268 check_added_monitors!(nodes[1], 1);
2270 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
2271 check_added_monitors!(nodes[0], 1);
2272 let as_cs = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
2274 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_cs.commitment_signed);
2275 check_added_monitors!(nodes[1], 1);
2276 let bs_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
2278 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
2279 check_added_monitors!(nodes[0], 1);
2281 expect_pending_htlcs_forwardable!(nodes[0]);
2282 expect_payment_received!(nodes[0], payment_hash_4, 10000);
2284 claim_payment(&nodes[1], &[&nodes[0]], payment_preimage_4, 10_000);
2285 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_3, 100_000);
2289 fn channel_monitor_network_test() {
2290 // Simple test which builds a network of ChannelManagers, connects them to each other, and
2291 // tests that ChannelMonitor is able to recover from various states.
2292 let chanmon_cfgs = create_chanmon_cfgs(5);
2293 let node_cfgs = create_node_cfgs(5, &chanmon_cfgs);
2294 let node_chanmgrs = create_node_chanmgrs(5, &node_cfgs, &[None, None, None, None, None]);
2295 let nodes = create_network(5, &node_cfgs, &node_chanmgrs);
2297 // Create some initial channels
2298 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2299 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
2300 let chan_3 = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known());
2301 let chan_4 = create_announced_chan_between_nodes(&nodes, 3, 4, InitFeatures::known(), InitFeatures::known());
2303 // Rebalance the network a bit by relaying one payment through all the channels...
2304 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000, 8_000_000);
2305 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000, 8_000_000);
2306 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000, 8_000_000);
2307 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000, 8_000_000);
2309 // Simple case with no pending HTLCs:
2310 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), true);
2311 check_added_monitors!(nodes[1], 1);
2313 let mut node_txn = test_txn_broadcast(&nodes[1], &chan_1, None, HTLCType::NONE);
2314 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2315 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![node_txn.drain(..).next().unwrap()] }, 1);
2316 check_added_monitors!(nodes[0], 1);
2317 test_txn_broadcast(&nodes[0], &chan_1, None, HTLCType::NONE);
2319 get_announce_close_broadcast_events(&nodes, 0, 1);
2320 assert_eq!(nodes[0].node.list_channels().len(), 0);
2321 assert_eq!(nodes[1].node.list_channels().len(), 1);
2323 // One pending HTLC is discarded by the force-close:
2324 let payment_preimage_1 = route_payment(&nodes[1], &vec!(&nodes[2], &nodes[3])[..], 3000000).0;
2326 // Simple case of one pending HTLC to HTLC-Timeout
2327 nodes[1].node.peer_disconnected(&nodes[2].node.get_our_node_id(), true);
2328 check_added_monitors!(nodes[1], 1);
2330 let mut node_txn = test_txn_broadcast(&nodes[1], &chan_2, None, HTLCType::TIMEOUT);
2331 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2332 nodes[2].block_notifier.block_connected(&Block { header, txdata: vec![node_txn.drain(..).next().unwrap()] }, 1);
2333 check_added_monitors!(nodes[2], 1);
2334 test_txn_broadcast(&nodes[2], &chan_2, None, HTLCType::NONE);
2336 get_announce_close_broadcast_events(&nodes, 1, 2);
2337 assert_eq!(nodes[1].node.list_channels().len(), 0);
2338 assert_eq!(nodes[2].node.list_channels().len(), 1);
2340 macro_rules! claim_funds {
2341 ($node: expr, $prev_node: expr, $preimage: expr, $amount: expr) => {
2343 assert!($node.node.claim_funds($preimage, &None, $amount));
2344 check_added_monitors!($node, 1);
2346 let events = $node.node.get_and_clear_pending_msg_events();
2347 assert_eq!(events.len(), 1);
2349 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, .. } } => {
2350 assert!(update_add_htlcs.is_empty());
2351 assert!(update_fail_htlcs.is_empty());
2352 assert_eq!(*node_id, $prev_node.node.get_our_node_id());
2354 _ => panic!("Unexpected event"),
2360 // nodes[3] gets the preimage, but nodes[2] already disconnected, resulting in a nodes[2]
2361 // HTLC-Timeout and a nodes[3] claim against it (+ its own announces)
2362 nodes[2].node.peer_disconnected(&nodes[3].node.get_our_node_id(), true);
2363 check_added_monitors!(nodes[2], 1);
2364 let node2_commitment_txid;
2366 let node_txn = test_txn_broadcast(&nodes[2], &chan_3, None, HTLCType::TIMEOUT);
2367 node2_commitment_txid = node_txn[0].txid();
2369 // Claim the payment on nodes[3], giving it knowledge of the preimage
2370 claim_funds!(nodes[3], nodes[2], payment_preimage_1, 3_000_000);
2372 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2373 nodes[3].block_notifier.block_connected(&Block { header, txdata: vec![node_txn[0].clone()] }, 1);
2374 check_added_monitors!(nodes[3], 1);
2376 check_preimage_claim(&nodes[3], &node_txn);
2378 get_announce_close_broadcast_events(&nodes, 2, 3);
2379 assert_eq!(nodes[2].node.list_channels().len(), 0);
2380 assert_eq!(nodes[3].node.list_channels().len(), 1);
2382 { // Cheat and reset nodes[4]'s height to 1
2383 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2384 nodes[4].block_notifier.block_connected(&Block { header, txdata: vec![] }, 1);
2387 assert_eq!(nodes[3].node.latest_block_height.load(Ordering::Acquire), 1);
2388 assert_eq!(nodes[4].node.latest_block_height.load(Ordering::Acquire), 1);
2389 // One pending HTLC to time out:
2390 let payment_preimage_2 = route_payment(&nodes[3], &vec!(&nodes[4])[..], 3000000).0;
2391 // CLTV expires at TEST_FINAL_CLTV + 1 (current height) + 1 (added in send_payment for
2395 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2396 nodes[3].block_notifier.block_connected_checked(&header, 2, &Vec::new()[..], &[0; 0]);
2397 for i in 3..TEST_FINAL_CLTV + 2 + LATENCY_GRACE_PERIOD_BLOCKS + 1 {
2398 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2399 nodes[3].block_notifier.block_connected_checked(&header, i, &Vec::new()[..], &[0; 0]);
2401 check_added_monitors!(nodes[3], 1);
2403 // Clear bumped claiming txn spending node 2 commitment tx. Bumped txn are generated after reaching some height timer.
2405 let mut node_txn = nodes[3].tx_broadcaster.txn_broadcasted.lock().unwrap();
2406 node_txn.retain(|tx| {
2407 if tx.input[0].previous_output.txid == node2_commitment_txid {
2413 let node_txn = test_txn_broadcast(&nodes[3], &chan_4, None, HTLCType::TIMEOUT);
2415 // Claim the payment on nodes[4], giving it knowledge of the preimage
2416 claim_funds!(nodes[4], nodes[3], payment_preimage_2, 3_000_000);
2418 header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2420 nodes[4].block_notifier.block_connected_checked(&header, 2, &Vec::new()[..], &[0; 0]);
2421 for i in 3..TEST_FINAL_CLTV + 2 - CLTV_CLAIM_BUFFER + 1 {
2422 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2423 nodes[4].block_notifier.block_connected_checked(&header, i, &Vec::new()[..], &[0; 0]);
2426 check_added_monitors!(nodes[4], 1);
2427 test_txn_broadcast(&nodes[4], &chan_4, None, HTLCType::SUCCESS);
2429 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2430 nodes[4].block_notifier.block_connected(&Block { header, txdata: vec![node_txn[0].clone()] }, TEST_FINAL_CLTV - 5);
2432 check_preimage_claim(&nodes[4], &node_txn);
2434 get_announce_close_broadcast_events(&nodes, 3, 4);
2435 assert_eq!(nodes[3].node.list_channels().len(), 0);
2436 assert_eq!(nodes[4].node.list_channels().len(), 0);
2440 fn test_justice_tx() {
2441 // Test justice txn built on revoked HTLC-Success tx, against both sides
2442 let mut alice_config = UserConfig::default();
2443 alice_config.channel_options.announced_channel = true;
2444 alice_config.peer_channel_config_limits.force_announced_channel_preference = false;
2445 alice_config.own_channel_config.our_to_self_delay = 6 * 24 * 5;
2446 let mut bob_config = UserConfig::default();
2447 bob_config.channel_options.announced_channel = true;
2448 bob_config.peer_channel_config_limits.force_announced_channel_preference = false;
2449 bob_config.own_channel_config.our_to_self_delay = 6 * 24 * 3;
2450 let user_cfgs = [Some(alice_config), Some(bob_config)];
2451 let chanmon_cfgs = create_chanmon_cfgs(2);
2452 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2453 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &user_cfgs);
2454 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2455 // Create some new channels:
2456 let chan_5 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2458 // A pending HTLC which will be revoked:
2459 let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
2460 // Get the will-be-revoked local txn from nodes[0]
2461 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_5.2);
2462 assert_eq!(revoked_local_txn.len(), 2); // First commitment tx, then HTLC tx
2463 assert_eq!(revoked_local_txn[0].input.len(), 1);
2464 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_5.3.txid());
2465 assert_eq!(revoked_local_txn[0].output.len(), 2); // Only HTLC and output back to 0 are present
2466 assert_eq!(revoked_local_txn[1].input.len(), 1);
2467 assert_eq!(revoked_local_txn[1].input[0].previous_output.txid, revoked_local_txn[0].txid());
2468 assert_eq!(revoked_local_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); // HTLC-Timeout
2469 // Revoke the old state
2470 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_3, 3_000_000);
2473 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2474 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
2476 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2477 assert_eq!(node_txn.len(), 2); // ChannelMonitor: penalty tx, ChannelManager: local commitment tx
2478 assert_eq!(node_txn[0].input.len(), 2); // We should claim the revoked output and the HTLC output
2480 check_spends!(node_txn[0], revoked_local_txn[0]);
2481 node_txn.swap_remove(0);
2482 node_txn.truncate(1);
2484 check_added_monitors!(nodes[1], 1);
2485 test_txn_broadcast(&nodes[1], &chan_5, None, HTLCType::NONE);
2487 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
2488 // Verify broadcast of revoked HTLC-timeout
2489 let node_txn = test_txn_broadcast(&nodes[0], &chan_5, Some(revoked_local_txn[0].clone()), HTLCType::TIMEOUT);
2490 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2491 check_added_monitors!(nodes[0], 1);
2492 // Broadcast revoked HTLC-timeout on node 1
2493 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![node_txn[1].clone()] }, 1);
2494 test_revoked_htlc_claim_txn_broadcast(&nodes[1], node_txn[1].clone(), revoked_local_txn[0].clone());
2496 get_announce_close_broadcast_events(&nodes, 0, 1);
2498 assert_eq!(nodes[0].node.list_channels().len(), 0);
2499 assert_eq!(nodes[1].node.list_channels().len(), 0);
2501 // We test justice_tx build by A on B's revoked HTLC-Success tx
2502 // Create some new channels:
2503 let chan_6 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2505 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2509 // A pending HTLC which will be revoked:
2510 let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
2511 // Get the will-be-revoked local txn from B
2512 let revoked_local_txn = get_local_commitment_txn!(nodes[1], chan_6.2);
2513 assert_eq!(revoked_local_txn.len(), 1); // Only commitment tx
2514 assert_eq!(revoked_local_txn[0].input.len(), 1);
2515 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_6.3.txid());
2516 assert_eq!(revoked_local_txn[0].output.len(), 2); // Only HTLC and output back to A are present
2517 // Revoke the old state
2518 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_4, 3_000_000);
2520 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2521 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
2523 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
2524 assert_eq!(node_txn.len(), 2); //ChannelMonitor: penalty tx, ChannelManager: local commitment tx
2525 assert_eq!(node_txn[0].input.len(), 1); // We claim the received HTLC output
2527 check_spends!(node_txn[0], revoked_local_txn[0]);
2528 node_txn.swap_remove(0);
2530 check_added_monitors!(nodes[0], 1);
2531 test_txn_broadcast(&nodes[0], &chan_6, None, HTLCType::NONE);
2533 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
2534 let node_txn = test_txn_broadcast(&nodes[1], &chan_6, Some(revoked_local_txn[0].clone()), HTLCType::SUCCESS);
2535 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2536 check_added_monitors!(nodes[1], 1);
2537 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![node_txn[1].clone()] }, 1);
2538 test_revoked_htlc_claim_txn_broadcast(&nodes[0], node_txn[1].clone(), revoked_local_txn[0].clone());
2540 get_announce_close_broadcast_events(&nodes, 0, 1);
2541 assert_eq!(nodes[0].node.list_channels().len(), 0);
2542 assert_eq!(nodes[1].node.list_channels().len(), 0);
2546 fn revoked_output_claim() {
2547 // Simple test to ensure a node will claim a revoked output when a stale remote commitment
2548 // transaction is broadcast by its counterparty
2549 let chanmon_cfgs = create_chanmon_cfgs(2);
2550 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2551 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2552 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2553 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2554 // node[0] is gonna to revoke an old state thus node[1] should be able to claim the revoked output
2555 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
2556 assert_eq!(revoked_local_txn.len(), 1);
2557 // Only output is the full channel value back to nodes[0]:
2558 assert_eq!(revoked_local_txn[0].output.len(), 1);
2559 // Send a payment through, updating everyone's latest commitment txn
2560 send_payment(&nodes[0], &vec!(&nodes[1])[..], 5000000, 5_000_000);
2562 // Inform nodes[1] that nodes[0] broadcast a stale tx
2563 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2564 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
2565 check_added_monitors!(nodes[1], 1);
2566 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2567 assert_eq!(node_txn.len(), 2); // ChannelMonitor: justice tx against revoked to_local output, ChannelManager: local commitment tx
2569 check_spends!(node_txn[0], revoked_local_txn[0]);
2570 check_spends!(node_txn[1], chan_1.3);
2572 // Inform nodes[0] that a watchtower cheated on its behalf, so it will force-close the chan
2573 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
2574 get_announce_close_broadcast_events(&nodes, 0, 1);
2575 check_added_monitors!(nodes[0], 1)
2579 fn claim_htlc_outputs_shared_tx() {
2580 // Node revoked old state, htlcs haven't time out yet, claim them in shared justice tx
2581 let chanmon_cfgs = create_chanmon_cfgs(2);
2582 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2583 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2584 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2586 // Create some new channel:
2587 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2589 // Rebalance the network to generate htlc in the two directions
2590 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
2591 // 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
2592 let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
2593 let (_payment_preimage_2, payment_hash_2) = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3000000);
2595 // Get the will-be-revoked local txn from node[0]
2596 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
2597 assert_eq!(revoked_local_txn.len(), 2); // commitment tx + 1 HTLC-Timeout tx
2598 assert_eq!(revoked_local_txn[0].input.len(), 1);
2599 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
2600 assert_eq!(revoked_local_txn[1].input.len(), 1);
2601 assert_eq!(revoked_local_txn[1].input[0].previous_output.txid, revoked_local_txn[0].txid());
2602 assert_eq!(revoked_local_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); // HTLC-Timeout
2603 check_spends!(revoked_local_txn[1], revoked_local_txn[0]);
2605 //Revoke the old state
2606 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_1, 3_000_000);
2609 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2610 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
2611 check_added_monitors!(nodes[0], 1);
2612 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
2613 check_added_monitors!(nodes[1], 1);
2614 connect_blocks(&nodes[1].block_notifier, ANTI_REORG_DELAY - 1, 1, true, header.bitcoin_hash());
2615 expect_payment_failed!(nodes[1], payment_hash_2, true);
2617 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2618 assert_eq!(node_txn.len(), 3); // ChannelMonitor: penalty tx, ChannelManager: local commitment + HTLC-timeout
2620 assert_eq!(node_txn[0].input.len(), 3); // Claim the revoked output + both revoked HTLC outputs
2621 check_spends!(node_txn[0], revoked_local_txn[0]);
2623 let mut witness_lens = BTreeSet::new();
2624 witness_lens.insert(node_txn[0].input[0].witness.last().unwrap().len());
2625 witness_lens.insert(node_txn[0].input[1].witness.last().unwrap().len());
2626 witness_lens.insert(node_txn[0].input[2].witness.last().unwrap().len());
2627 assert_eq!(witness_lens.len(), 3);
2628 assert_eq!(*witness_lens.iter().skip(0).next().unwrap(), 77); // revoked to_local
2629 assert_eq!(*witness_lens.iter().skip(1).next().unwrap(), OFFERED_HTLC_SCRIPT_WEIGHT); // revoked offered HTLC
2630 assert_eq!(*witness_lens.iter().skip(2).next().unwrap(), ACCEPTED_HTLC_SCRIPT_WEIGHT); // revoked received HTLC
2632 // Next nodes[1] broadcasts its current local tx state:
2633 assert_eq!(node_txn[1].input.len(), 1);
2634 assert_eq!(node_txn[1].input[0].previous_output.txid, chan_1.3.txid()); //Spending funding tx unique txouput, tx broadcasted by ChannelManager
2636 assert_eq!(node_txn[2].input.len(), 1);
2637 let witness_script = node_txn[2].clone().input[0].witness.pop().unwrap();
2638 assert_eq!(witness_script.len(), OFFERED_HTLC_SCRIPT_WEIGHT); //Spending an offered htlc output
2639 assert_eq!(node_txn[2].input[0].previous_output.txid, node_txn[1].txid());
2640 assert_ne!(node_txn[2].input[0].previous_output.txid, node_txn[0].input[0].previous_output.txid);
2641 assert_ne!(node_txn[2].input[0].previous_output.txid, node_txn[0].input[1].previous_output.txid);
2643 get_announce_close_broadcast_events(&nodes, 0, 1);
2644 assert_eq!(nodes[0].node.list_channels().len(), 0);
2645 assert_eq!(nodes[1].node.list_channels().len(), 0);
2649 fn claim_htlc_outputs_single_tx() {
2650 // Node revoked old state, htlcs have timed out, claim each of them in separated justice tx
2651 let chanmon_cfgs = create_chanmon_cfgs(2);
2652 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
2653 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
2654 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
2656 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2658 // Rebalance the network to generate htlc in the two directions
2659 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
2660 // 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
2661 // time as two different claim transactions as we're gonna to timeout htlc with given a high current height
2662 let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
2663 let (_payment_preimage_2, payment_hash_2) = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3000000);
2665 // Get the will-be-revoked local txn from node[0]
2666 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
2668 //Revoke the old state
2669 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_1, 3_000_000);
2672 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
2673 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 200);
2674 check_added_monitors!(nodes[0], 1);
2675 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 200);
2676 check_added_monitors!(nodes[1], 1);
2677 expect_pending_htlcs_forwardable_ignore!(nodes[0]);
2679 connect_blocks(&nodes[1].block_notifier, ANTI_REORG_DELAY - 1, 200, true, header.bitcoin_hash());
2680 expect_payment_failed!(nodes[1], payment_hash_2, true);
2682 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2683 assert_eq!(node_txn.len(), 9);
2684 // ChannelMonitor: justice tx revoked offered htlc, justice tx revoked received htlc, justice tx revoked to_local (3)
2685 // ChannelManager: local commmitment + local HTLC-timeout (2)
2686 // ChannelMonitor: bumped justice tx, after one increase, bumps on HTLC aren't generated not being substantial anymore, bump on revoked to_local isn't generated due to more room for expiration (2)
2687 // ChannelMonitor: local commitment + local HTLC-timeout (2)
2689 // Check the pair local commitment and HTLC-timeout broadcast due to HTLC expiration
2690 assert_eq!(node_txn[2].input.len(), 1);
2691 check_spends!(node_txn[2], chan_1.3);
2692 assert_eq!(node_txn[3].input.len(), 1);
2693 let witness_script = node_txn[3].input[0].witness.last().unwrap();
2694 assert_eq!(witness_script.len(), OFFERED_HTLC_SCRIPT_WEIGHT); //Spending an offered htlc output
2695 check_spends!(node_txn[3], node_txn[2]);
2697 // Justice transactions are indices 1-2-4
2698 assert_eq!(node_txn[0].input.len(), 1);
2699 assert_eq!(node_txn[1].input.len(), 1);
2700 assert_eq!(node_txn[4].input.len(), 1);
2702 check_spends!(node_txn[0], revoked_local_txn[0]);
2703 check_spends!(node_txn[1], revoked_local_txn[0]);
2704 check_spends!(node_txn[4], revoked_local_txn[0]);
2706 let mut witness_lens = BTreeSet::new();
2707 witness_lens.insert(node_txn[0].input[0].witness.last().unwrap().len());
2708 witness_lens.insert(node_txn[1].input[0].witness.last().unwrap().len());
2709 witness_lens.insert(node_txn[4].input[0].witness.last().unwrap().len());
2710 assert_eq!(witness_lens.len(), 3);
2711 assert_eq!(*witness_lens.iter().skip(0).next().unwrap(), 77); // revoked to_local
2712 assert_eq!(*witness_lens.iter().skip(1).next().unwrap(), OFFERED_HTLC_SCRIPT_WEIGHT); // revoked offered HTLC
2713 assert_eq!(*witness_lens.iter().skip(2).next().unwrap(), ACCEPTED_HTLC_SCRIPT_WEIGHT); // revoked received HTLC
2715 get_announce_close_broadcast_events(&nodes, 0, 1);
2716 assert_eq!(nodes[0].node.list_channels().len(), 0);
2717 assert_eq!(nodes[1].node.list_channels().len(), 0);
2721 fn test_htlc_on_chain_success() {
2722 // Test that in case of a unilateral close onchain, we detect the state of output thanks to
2723 // ChainWatchInterface and pass the preimage backward accordingly. So here we test that ChannelManager is
2724 // broadcasting the right event to other nodes in payment path.
2725 // We test with two HTLCs simultaneously as that was not handled correctly in the past.
2726 // A --------------------> B ----------------------> C (preimage)
2727 // First, C should claim the HTLC outputs via HTLC-Success when its own latest local
2728 // commitment transaction was broadcast.
2729 // Then, B should learn the preimage from said transactions, attempting to claim backwards
2731 // B should be able to claim via preimage if A then broadcasts its local tx.
2732 // Finally, when A sees B's latest local commitment transaction it should be able to claim
2733 // the HTLC outputs via the preimage it learned (which, once confirmed should generate a
2734 // PaymentSent event).
2736 let chanmon_cfgs = create_chanmon_cfgs(3);
2737 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
2738 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
2739 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
2741 // Create some initial channels
2742 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2743 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
2745 // Rebalance the network a bit by relaying one payment through all the channels...
2746 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000, 8_000_000);
2747 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000, 8_000_000);
2749 let (our_payment_preimage, _payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
2750 let (our_payment_preimage_2, _payment_hash_2) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
2751 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
2753 // Broadcast legit commitment tx from C on B's chain
2754 // Broadcast HTLC Success transaction by C on received output from C's commitment tx on B's chain
2755 let commitment_tx = get_local_commitment_txn!(nodes[2], chan_2.2);
2756 assert_eq!(commitment_tx.len(), 1);
2757 check_spends!(commitment_tx[0], chan_2.3);
2758 nodes[2].node.claim_funds(our_payment_preimage, &None, 3_000_000);
2759 nodes[2].node.claim_funds(our_payment_preimage_2, &None, 3_000_000);
2760 check_added_monitors!(nodes[2], 2);
2761 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
2762 assert!(updates.update_add_htlcs.is_empty());
2763 assert!(updates.update_fail_htlcs.is_empty());
2764 assert!(updates.update_fail_malformed_htlcs.is_empty());
2765 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
2767 nodes[2].block_notifier.block_connected(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1);
2768 check_closed_broadcast!(nodes[2], false);
2769 check_added_monitors!(nodes[2], 1);
2770 let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 3 (commitment tx, 2*htlc-success tx), ChannelMonitor : 2 (2 * HTLC-Success tx)
2771 assert_eq!(node_txn.len(), 5);
2772 assert_eq!(node_txn[0], node_txn[3]);
2773 assert_eq!(node_txn[1], node_txn[4]);
2774 assert_eq!(node_txn[2], commitment_tx[0]);
2775 check_spends!(node_txn[0], commitment_tx[0]);
2776 check_spends!(node_txn[1], commitment_tx[0]);
2777 assert_eq!(node_txn[0].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
2778 assert_eq!(node_txn[1].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
2779 assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2780 assert!(node_txn[1].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2781 assert_eq!(node_txn[0].lock_time, 0);
2782 assert_eq!(node_txn[1].lock_time, 0);
2784 // Verify that B's ChannelManager is able to extract preimage from HTLC Success tx and pass it backward
2785 nodes[1].block_notifier.block_connected(&Block { header, txdata: node_txn}, 1);
2787 let mut added_monitors = nodes[1].chan_monitor.added_monitors.lock().unwrap();
2788 assert_eq!(added_monitors.len(), 1);
2789 assert_eq!(added_monitors[0].0.txid, chan_2.3.txid());
2790 added_monitors.clear();
2792 let events = nodes[1].node.get_and_clear_pending_msg_events();
2794 let mut added_monitors = nodes[1].chan_monitor.added_monitors.lock().unwrap();
2795 assert_eq!(added_monitors.len(), 2);
2796 assert_eq!(added_monitors[0].0.txid, chan_1.3.txid());
2797 assert_eq!(added_monitors[1].0.txid, chan_1.3.txid());
2798 added_monitors.clear();
2800 assert_eq!(events.len(), 2);
2802 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
2803 _ => panic!("Unexpected event"),
2806 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, .. } } => {
2807 assert!(update_add_htlcs.is_empty());
2808 assert!(update_fail_htlcs.is_empty());
2809 assert_eq!(update_fulfill_htlcs.len(), 1);
2810 assert!(update_fail_malformed_htlcs.is_empty());
2811 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
2813 _ => panic!("Unexpected event"),
2815 macro_rules! check_tx_local_broadcast {
2816 ($node: expr, $htlc_offered: expr, $commitment_tx: expr, $chan_tx: expr) => { {
2817 let mut node_txn = $node.tx_broadcaster.txn_broadcasted.lock().unwrap();
2818 assert_eq!(node_txn.len(), 5);
2819 // Node[1]: ChannelManager: 3 (commitment tx, 2*HTLC-Timeout tx), ChannelMonitor: 2 (timeout tx)
2820 // Node[0]: ChannelManager: 3 (commtiemtn tx, 2*HTLC-Timeout tx), ChannelMonitor: 2 HTLC-timeout
2821 check_spends!(node_txn[0], $commitment_tx);
2822 check_spends!(node_txn[1], $commitment_tx);
2823 assert_ne!(node_txn[0].lock_time, 0);
2824 assert_ne!(node_txn[1].lock_time, 0);
2826 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2827 assert_eq!(node_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2828 assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2829 assert!(node_txn[1].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2831 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
2832 assert_eq!(node_txn[1].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
2833 assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
2834 assert!(node_txn[1].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
2836 check_spends!(node_txn[2], $chan_tx);
2837 check_spends!(node_txn[3], node_txn[2]);
2838 check_spends!(node_txn[4], node_txn[2]);
2839 assert_eq!(node_txn[2].input[0].witness.last().unwrap().len(), 71);
2840 assert_eq!(node_txn[3].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2841 assert_eq!(node_txn[4].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2842 assert!(node_txn[3].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2843 assert!(node_txn[4].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
2844 assert_ne!(node_txn[3].lock_time, 0);
2845 assert_ne!(node_txn[4].lock_time, 0);
2849 // nodes[1] now broadcasts its own local state as a fallback, suggesting an alternate
2850 // commitment transaction with a corresponding HTLC-Timeout transactions, as well as a
2851 // timeout-claim of the output that nodes[2] just claimed via success.
2852 check_tx_local_broadcast!(nodes[1], false, commitment_tx[0], chan_2.3);
2854 // Broadcast legit commitment tx from A on B's chain
2855 // Broadcast preimage tx by B on offered output from A commitment tx on A's chain
2856 let commitment_tx = get_local_commitment_txn!(nodes[0], chan_1.2);
2857 check_spends!(commitment_tx[0], chan_1.3);
2858 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1);
2859 check_closed_broadcast!(nodes[1], false);
2860 check_added_monitors!(nodes[1], 1);
2861 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 3 (commitment tx + HTLC-Sucess * 2), ChannelMonitor : 1 (HTLC-Success)
2862 assert_eq!(node_txn.len(), 4);
2863 check_spends!(node_txn[0], commitment_tx[0]);
2864 assert_eq!(node_txn[0].input.len(), 2);
2865 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2866 assert_eq!(node_txn[0].input[1].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2867 assert_eq!(node_txn[0].lock_time, 0);
2868 assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
2869 check_spends!(node_txn[1], chan_1.3);
2870 assert_eq!(node_txn[1].input[0].witness.clone().last().unwrap().len(), 71);
2871 check_spends!(node_txn[2], node_txn[1]);
2872 check_spends!(node_txn[3], node_txn[1]);
2873 // We don't bother to check that B can claim the HTLC output on its commitment tx here as
2874 // we already checked the same situation with A.
2876 // Verify that A's ChannelManager is able to extract preimage from preimage tx and generate PaymentSent
2877 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![commitment_tx[0].clone(), node_txn[0].clone()] }, 1);
2878 check_closed_broadcast!(nodes[0], false);
2879 check_added_monitors!(nodes[0], 1);
2880 let events = nodes[0].node.get_and_clear_pending_events();
2881 assert_eq!(events.len(), 2);
2882 let mut first_claimed = false;
2883 for event in events {
2885 Event::PaymentSent { payment_preimage } => {
2886 if payment_preimage == our_payment_preimage {
2887 assert!(!first_claimed);
2888 first_claimed = true;
2890 assert_eq!(payment_preimage, our_payment_preimage_2);
2893 _ => panic!("Unexpected event"),
2896 check_tx_local_broadcast!(nodes[0], true, commitment_tx[0], chan_1.3);
2900 fn test_htlc_on_chain_timeout() {
2901 // Test that in case of a unilateral close onchain, we detect the state of output thanks to
2902 // ChainWatchInterface and timeout the HTLC backward accordingly. So here we test that ChannelManager is
2903 // broadcasting the right event to other nodes in payment path.
2904 // A ------------------> B ----------------------> C (timeout)
2905 // B's commitment tx C's commitment tx
2907 // B's HTLC timeout tx B's timeout tx
2909 let chanmon_cfgs = create_chanmon_cfgs(3);
2910 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
2911 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
2912 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
2914 // Create some intial channels
2915 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
2916 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
2918 // Rebalance the network a bit by relaying one payment thorugh all the channels...
2919 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000, 8_000_000);
2920 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000, 8_000_000);
2922 let (_payment_preimage, payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
2923 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
2925 // Broadcast legit commitment tx from C on B's chain
2926 let commitment_tx = get_local_commitment_txn!(nodes[2], chan_2.2);
2927 check_spends!(commitment_tx[0], chan_2.3);
2928 nodes[2].node.fail_htlc_backwards(&payment_hash, &None);
2929 check_added_monitors!(nodes[2], 0);
2930 expect_pending_htlcs_forwardable!(nodes[2]);
2931 check_added_monitors!(nodes[2], 1);
2933 let events = nodes[2].node.get_and_clear_pending_msg_events();
2934 assert_eq!(events.len(), 1);
2936 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, .. } } => {
2937 assert!(update_add_htlcs.is_empty());
2938 assert!(!update_fail_htlcs.is_empty());
2939 assert!(update_fulfill_htlcs.is_empty());
2940 assert!(update_fail_malformed_htlcs.is_empty());
2941 assert_eq!(nodes[1].node.get_our_node_id(), *node_id);
2943 _ => panic!("Unexpected event"),
2945 nodes[2].block_notifier.block_connected(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1);
2946 check_closed_broadcast!(nodes[2], false);
2947 check_added_monitors!(nodes[2], 1);
2948 let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 1 (commitment tx)
2949 assert_eq!(node_txn.len(), 1);
2950 check_spends!(node_txn[0], chan_2.3);
2951 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), 71);
2953 // Broadcast timeout transaction by B on received output from C's commitment tx on B's chain
2954 // Verify that B's ChannelManager is able to detect that HTLC is timeout by its own tx and react backward in consequence
2955 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 200);
2958 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
2959 assert_eq!(node_txn.len(), 5); // ChannelManager : 2 (commitment tx, HTLC-Timeout tx), ChannelMonitor : 2 (local commitment tx + HTLC-timeout), 1 timeout tx
2960 assert_eq!(node_txn[1], node_txn[3]);
2961 assert_eq!(node_txn[2], node_txn[4]);
2963 check_spends!(node_txn[0], commitment_tx[0]);
2964 assert_eq!(node_txn[0].clone().input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
2966 check_spends!(node_txn[1], chan_2.3);
2967 check_spends!(node_txn[2], node_txn[1]);
2968 assert_eq!(node_txn[1].clone().input[0].witness.last().unwrap().len(), 71);
2969 assert_eq!(node_txn[2].clone().input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
2971 timeout_tx = node_txn[0].clone();
2975 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![timeout_tx]}, 1);
2976 connect_blocks(&nodes[1].block_notifier, ANTI_REORG_DELAY - 1, 1, true, header.bitcoin_hash());
2977 check_added_monitors!(nodes[1], 1);
2978 check_closed_broadcast!(nodes[1], false);
2980 expect_pending_htlcs_forwardable!(nodes[1]);
2981 check_added_monitors!(nodes[1], 1);
2982 let events = nodes[1].node.get_and_clear_pending_msg_events();
2983 assert_eq!(events.len(), 1);
2985 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, .. } } => {
2986 assert!(update_add_htlcs.is_empty());
2987 assert!(!update_fail_htlcs.is_empty());
2988 assert!(update_fulfill_htlcs.is_empty());
2989 assert!(update_fail_malformed_htlcs.is_empty());
2990 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
2992 _ => panic!("Unexpected event"),
2994 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
2995 assert_eq!(node_txn.len(), 0);
2997 // Broadcast legit commitment tx from B on A's chain
2998 let commitment_tx = get_local_commitment_txn!(nodes[1], chan_1.2);
2999 check_spends!(commitment_tx[0], chan_1.3);
3001 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 200);
3002 check_closed_broadcast!(nodes[0], false);
3003 check_added_monitors!(nodes[0], 1);
3004 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 2 (commitment tx, HTLC-Timeout tx), ChannelMonitor : 1 timeout tx
3005 assert_eq!(node_txn.len(), 3);
3006 check_spends!(node_txn[0], commitment_tx[0]);
3007 assert_eq!(node_txn[0].clone().input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
3008 check_spends!(node_txn[1], chan_1.3);
3009 check_spends!(node_txn[2], node_txn[1]);
3010 assert_eq!(node_txn[1].clone().input[0].witness.last().unwrap().len(), 71);
3011 assert_eq!(node_txn[2].clone().input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
3015 fn test_simple_commitment_revoked_fail_backward() {
3016 // Test that in case of a revoked commitment tx, we detect the resolution of output by justice tx
3017 // and fail backward accordingly.
3019 let chanmon_cfgs = create_chanmon_cfgs(3);
3020 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
3021 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
3022 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
3024 // Create some initial channels
3025 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3026 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
3028 let (payment_preimage, _payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000);
3029 // Get the will-be-revoked local txn from nodes[2]
3030 let revoked_local_txn = get_local_commitment_txn!(nodes[2], chan_2.2);
3031 // Revoke the old state
3032 claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage, 3_000_000);
3034 let (_, payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000);
3036 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
3037 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
3038 connect_blocks(&nodes[1].block_notifier, ANTI_REORG_DELAY - 1, 1, true, header.bitcoin_hash());
3039 check_added_monitors!(nodes[1], 1);
3040 check_closed_broadcast!(nodes[1], false);
3042 expect_pending_htlcs_forwardable!(nodes[1]);
3043 check_added_monitors!(nodes[1], 1);
3044 let events = nodes[1].node.get_and_clear_pending_msg_events();
3045 assert_eq!(events.len(), 1);
3047 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, .. } } => {
3048 assert!(update_add_htlcs.is_empty());
3049 assert_eq!(update_fail_htlcs.len(), 1);
3050 assert!(update_fulfill_htlcs.is_empty());
3051 assert!(update_fail_malformed_htlcs.is_empty());
3052 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
3054 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]);
3055 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false, true);
3057 let events = nodes[0].node.get_and_clear_pending_msg_events();
3058 assert_eq!(events.len(), 1);
3060 MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
3061 _ => panic!("Unexpected event"),
3063 expect_payment_failed!(nodes[0], payment_hash, false);
3065 _ => panic!("Unexpected event"),
3069 fn do_test_commitment_revoked_fail_backward_exhaustive(deliver_bs_raa: bool, use_dust: bool, no_to_remote: bool) {
3070 // Test that if our counterparty broadcasts a revoked commitment transaction we fail all
3071 // pending HTLCs on that channel backwards even if the HTLCs aren't present in our latest
3072 // commitment transaction anymore.
3073 // To do this, we have the peer which will broadcast a revoked commitment transaction send
3074 // a number of update_fail/commitment_signed updates without ever sending the RAA in
3075 // response to our commitment_signed. This is somewhat misbehavior-y, though not
3076 // technically disallowed and we should probably handle it reasonably.
3077 // Note that this is pretty exhaustive as an outbound HTLC which we haven't yet
3078 // failed/fulfilled backwards must be in at least one of the latest two remote commitment
3080 // * Once we move it out of our holding cell/add it, we will immediately include it in a
3081 // commitment_signed (implying it will be in the latest remote commitment transaction).
3082 // * Once they remove it, we will send a (the first) commitment_signed without the HTLC,
3083 // and once they revoke the previous commitment transaction (allowing us to send a new
3084 // commitment_signed) we will be free to fail/fulfill the HTLC backwards.
3085 let chanmon_cfgs = create_chanmon_cfgs(3);
3086 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
3087 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
3088 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
3090 // Create some initial channels
3091 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3092 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
3094 let (payment_preimage, _payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], if no_to_remote { 10_000 } else { 3_000_000 });
3095 // Get the will-be-revoked local txn from nodes[2]
3096 let revoked_local_txn = get_local_commitment_txn!(nodes[2], chan_2.2);
3097 assert_eq!(revoked_local_txn[0].output.len(), if no_to_remote { 1 } else { 2 });
3098 // Revoke the old state
3099 claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage, if no_to_remote { 10_000 } else { 3_000_000});
3101 let value = if use_dust {
3102 // The dust limit applied to HTLC outputs considers the fee of the HTLC transaction as
3103 // well, so HTLCs at exactly the dust limit will not be included in commitment txn.
3104 nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().our_dust_limit_satoshis * 1000
3107 let (_, first_payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], value);
3108 let (_, second_payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], value);
3109 let (_, third_payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], value);
3111 assert!(nodes[2].node.fail_htlc_backwards(&first_payment_hash, &None));
3112 expect_pending_htlcs_forwardable!(nodes[2]);
3113 check_added_monitors!(nodes[2], 1);
3114 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
3115 assert!(updates.update_add_htlcs.is_empty());
3116 assert!(updates.update_fulfill_htlcs.is_empty());
3117 assert!(updates.update_fail_malformed_htlcs.is_empty());
3118 assert_eq!(updates.update_fail_htlcs.len(), 1);
3119 assert!(updates.update_fee.is_none());
3120 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
3121 let bs_raa = commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false, true, false, true);
3122 // Drop the last RAA from 3 -> 2
3124 assert!(nodes[2].node.fail_htlc_backwards(&second_payment_hash, &None));
3125 expect_pending_htlcs_forwardable!(nodes[2]);
3126 check_added_monitors!(nodes[2], 1);
3127 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
3128 assert!(updates.update_add_htlcs.is_empty());
3129 assert!(updates.update_fulfill_htlcs.is_empty());
3130 assert!(updates.update_fail_malformed_htlcs.is_empty());
3131 assert_eq!(updates.update_fail_htlcs.len(), 1);
3132 assert!(updates.update_fee.is_none());
3133 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
3134 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &updates.commitment_signed);
3135 check_added_monitors!(nodes[1], 1);
3136 // Note that nodes[1] is in AwaitingRAA, so won't send a CS
3137 let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
3138 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa);
3139 check_added_monitors!(nodes[2], 1);
3141 assert!(nodes[2].node.fail_htlc_backwards(&third_payment_hash, &None));
3142 expect_pending_htlcs_forwardable!(nodes[2]);
3143 check_added_monitors!(nodes[2], 1);
3144 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
3145 assert!(updates.update_add_htlcs.is_empty());
3146 assert!(updates.update_fulfill_htlcs.is_empty());
3147 assert!(updates.update_fail_malformed_htlcs.is_empty());
3148 assert_eq!(updates.update_fail_htlcs.len(), 1);
3149 assert!(updates.update_fee.is_none());
3150 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
3151 // At this point first_payment_hash has dropped out of the latest two commitment
3152 // transactions that nodes[1] is tracking...
3153 nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &updates.commitment_signed);
3154 check_added_monitors!(nodes[1], 1);
3155 // Note that nodes[1] is (still) in AwaitingRAA, so won't send a CS
3156 let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id());
3157 nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa);
3158 check_added_monitors!(nodes[2], 1);
3160 // Add a fourth HTLC, this one will get sequestered away in nodes[1]'s holding cell waiting
3161 // on nodes[2]'s RAA.
3162 let (_, fourth_payment_hash) = get_payment_preimage_hash!(nodes[0]);
3163 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
3164 let logger = test_utils::TestLogger::new();
3165 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
3166 nodes[1].node.send_payment(&route, fourth_payment_hash, &None).unwrap();
3167 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
3168 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
3169 check_added_monitors!(nodes[1], 0);
3172 nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_raa);
3173 // One monitor for the new revocation preimage, no second on as we won't generate a new
3174 // commitment transaction for nodes[0] until process_pending_htlc_forwards().
3175 check_added_monitors!(nodes[1], 1);
3176 let events = nodes[1].node.get_and_clear_pending_events();
3177 assert_eq!(events.len(), 1);
3179 Event::PendingHTLCsForwardable { .. } => { },
3180 _ => panic!("Unexpected event"),
3182 // Deliberately don't process the pending fail-back so they all fail back at once after
3183 // block connection just like the !deliver_bs_raa case
3186 let mut failed_htlcs = HashSet::new();
3187 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
3189 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
3190 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
3191 check_added_monitors!(nodes[1], 1);
3192 connect_blocks(&nodes[1].block_notifier, ANTI_REORG_DELAY - 1, 1, true, header.bitcoin_hash());
3194 let events = nodes[1].node.get_and_clear_pending_events();
3195 assert_eq!(events.len(), if deliver_bs_raa { 1 } else { 2 });
3197 Event::PaymentFailed { ref payment_hash, .. } => {
3198 assert_eq!(*payment_hash, fourth_payment_hash);
3200 _ => panic!("Unexpected event"),
3202 if !deliver_bs_raa {
3204 Event::PendingHTLCsForwardable { .. } => { },
3205 _ => panic!("Unexpected event"),
3208 nodes[1].node.process_pending_htlc_forwards();
3209 check_added_monitors!(nodes[1], 1);
3211 let events = nodes[1].node.get_and_clear_pending_msg_events();
3212 assert_eq!(events.len(), if deliver_bs_raa { 3 } else { 2 });
3213 match events[if deliver_bs_raa { 1 } else { 0 }] {
3214 MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {},
3215 _ => panic!("Unexpected event"),
3219 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, .. } } => {
3220 assert_eq!(nodes[2].node.get_our_node_id(), *node_id);
3221 assert_eq!(update_add_htlcs.len(), 1);
3222 assert!(update_fulfill_htlcs.is_empty());
3223 assert!(update_fail_htlcs.is_empty());
3224 assert!(update_fail_malformed_htlcs.is_empty());
3226 _ => panic!("Unexpected event"),
3229 match events[if deliver_bs_raa { 2 } else { 1 }] {
3230 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, .. } } => {
3231 assert!(update_add_htlcs.is_empty());
3232 assert_eq!(update_fail_htlcs.len(), 3);
3233 assert!(update_fulfill_htlcs.is_empty());
3234 assert!(update_fail_malformed_htlcs.is_empty());
3235 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
3237 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]);
3238 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[1]);
3239 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[2]);
3241 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false, true);
3243 let events = nodes[0].node.get_and_clear_pending_msg_events();
3244 // If we delivered B's RAA we got an unknown preimage error, not something
3245 // that we should update our routing table for.
3246 assert_eq!(events.len(), if deliver_bs_raa { 2 } else { 3 });
3247 for event in events {
3249 MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
3250 _ => panic!("Unexpected event"),
3253 let events = nodes[0].node.get_and_clear_pending_events();
3254 assert_eq!(events.len(), 3);
3256 Event::PaymentFailed { ref payment_hash, .. } => {
3257 assert!(failed_htlcs.insert(payment_hash.0));
3259 _ => panic!("Unexpected event"),
3262 Event::PaymentFailed { ref payment_hash, .. } => {
3263 assert!(failed_htlcs.insert(payment_hash.0));
3265 _ => panic!("Unexpected event"),
3268 Event::PaymentFailed { ref payment_hash, .. } => {
3269 assert!(failed_htlcs.insert(payment_hash.0));
3271 _ => panic!("Unexpected event"),
3274 _ => panic!("Unexpected event"),
3277 assert!(failed_htlcs.contains(&first_payment_hash.0));
3278 assert!(failed_htlcs.contains(&second_payment_hash.0));
3279 assert!(failed_htlcs.contains(&third_payment_hash.0));
3283 fn test_commitment_revoked_fail_backward_exhaustive_a() {
3284 do_test_commitment_revoked_fail_backward_exhaustive(false, true, false);
3285 do_test_commitment_revoked_fail_backward_exhaustive(true, true, false);
3286 do_test_commitment_revoked_fail_backward_exhaustive(false, false, false);
3287 do_test_commitment_revoked_fail_backward_exhaustive(true, false, false);
3291 fn test_commitment_revoked_fail_backward_exhaustive_b() {
3292 do_test_commitment_revoked_fail_backward_exhaustive(false, true, true);
3293 do_test_commitment_revoked_fail_backward_exhaustive(true, true, true);
3294 do_test_commitment_revoked_fail_backward_exhaustive(false, false, true);
3295 do_test_commitment_revoked_fail_backward_exhaustive(true, false, true);
3299 fn fail_backward_pending_htlc_upon_channel_failure() {
3300 let chanmon_cfgs = create_chanmon_cfgs(2);
3301 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3302 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3303 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3304 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 500_000_000, InitFeatures::known(), InitFeatures::known());
3305 let logger = test_utils::TestLogger::new();
3307 // Alice -> Bob: Route a payment but without Bob sending revoke_and_ack.
3309 let (_, payment_hash) = get_payment_preimage_hash!(nodes[0]);
3310 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3311 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &Vec::new(), 50_000, TEST_FINAL_CLTV, &logger).unwrap();
3312 nodes[0].node.send_payment(&route, payment_hash, &None).unwrap();
3313 check_added_monitors!(nodes[0], 1);
3315 let payment_event = {
3316 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
3317 assert_eq!(events.len(), 1);
3318 SendEvent::from_event(events.remove(0))
3320 assert_eq!(payment_event.node_id, nodes[1].node.get_our_node_id());
3321 assert_eq!(payment_event.msgs.len(), 1);
3324 // Alice -> Bob: Route another payment but now Alice waits for Bob's earlier revoke_and_ack.
3325 let (_, failed_payment_hash) = get_payment_preimage_hash!(nodes[0]);
3327 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3328 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &Vec::new(), 50_000, TEST_FINAL_CLTV, &logger).unwrap();
3329 nodes[0].node.send_payment(&route, failed_payment_hash, &None).unwrap();
3330 check_added_monitors!(nodes[0], 0);
3332 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
3335 // Alice <- Bob: Send a malformed update_add_htlc so Alice fails the channel.
3337 let (_, payment_hash) = get_payment_preimage_hash!(nodes[1]);
3339 let secp_ctx = Secp256k1::new();
3340 let session_priv = SecretKey::from_slice(&[42; 32]).unwrap();
3341 let current_height = nodes[1].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
3342 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
3343 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), None, &Vec::new(), 50_000, TEST_FINAL_CLTV, &logger).unwrap();
3344 let (onion_payloads, _amount_msat, cltv_expiry) = onion_utils::build_onion_payloads(&route.paths[0], 50_000, &None, current_height).unwrap();
3345 let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route.paths[0], &session_priv).unwrap();
3346 let onion_routing_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &payment_hash);
3348 // Send a 0-msat update_add_htlc to fail the channel.
3349 let update_add_htlc = msgs::UpdateAddHTLC {
3355 onion_routing_packet,
3357 nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &update_add_htlc);
3360 // Check that Alice fails backward the pending HTLC from the second payment.
3361 expect_payment_failed!(nodes[0], failed_payment_hash, true);
3362 check_closed_broadcast!(nodes[0], true);
3363 check_added_monitors!(nodes[0], 1);
3367 fn test_htlc_ignore_latest_remote_commitment() {
3368 // Test that HTLC transactions spending the latest remote commitment transaction are simply
3369 // ignored if we cannot claim them. This originally tickled an invalid unwrap().
3370 let chanmon_cfgs = create_chanmon_cfgs(2);
3371 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3372 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3373 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3374 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3376 route_payment(&nodes[0], &[&nodes[1]], 10000000);
3377 nodes[0].node.force_close_channel(&nodes[0].node.list_channels()[0].channel_id);
3378 check_closed_broadcast!(nodes[0], false);
3379 check_added_monitors!(nodes[0], 1);
3381 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
3382 assert_eq!(node_txn.len(), 2);
3384 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3385 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![node_txn[0].clone(), node_txn[1].clone()]}, 1);
3386 check_closed_broadcast!(nodes[1], false);
3387 check_added_monitors!(nodes[1], 1);
3389 // Duplicate the block_connected call since this may happen due to other listeners
3390 // registering new transactions
3391 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![node_txn[0].clone(), node_txn[1].clone()]}, 1);
3395 fn test_force_close_fail_back() {
3396 // Check which HTLCs are failed-backwards on channel force-closure
3397 let chanmon_cfgs = create_chanmon_cfgs(3);
3398 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
3399 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
3400 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
3401 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3402 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
3403 let logger = test_utils::TestLogger::new();
3405 let (our_payment_preimage, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
3407 let mut payment_event = {
3408 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3409 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, &Vec::new(), 1000000, 42, &logger).unwrap();
3410 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
3411 check_added_monitors!(nodes[0], 1);
3413 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
3414 assert_eq!(events.len(), 1);
3415 SendEvent::from_event(events.remove(0))
3418 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
3419 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
3421 expect_pending_htlcs_forwardable!(nodes[1]);
3423 let mut events_2 = nodes[1].node.get_and_clear_pending_msg_events();
3424 assert_eq!(events_2.len(), 1);
3425 payment_event = SendEvent::from_event(events_2.remove(0));
3426 assert_eq!(payment_event.msgs.len(), 1);
3428 check_added_monitors!(nodes[1], 1);
3429 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]);
3430 nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg);
3431 check_added_monitors!(nodes[2], 1);
3432 let (_, _) = get_revoke_commit_msgs!(nodes[2], nodes[1].node.get_our_node_id());
3434 // nodes[2] now has the latest commitment transaction, but hasn't revoked its previous
3435 // state or updated nodes[1]' state. Now force-close and broadcast that commitment/HTLC
3436 // transaction and ensure nodes[1] doesn't fail-backwards (this was originally a bug!).
3438 nodes[2].node.force_close_channel(&payment_event.commitment_msg.channel_id);
3439 check_closed_broadcast!(nodes[2], false);
3440 check_added_monitors!(nodes[2], 1);
3442 let mut node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap();
3443 // Note that we don't bother broadcasting the HTLC-Success transaction here as we don't
3444 // have a use for it unless nodes[2] learns the preimage somehow, the funds will go
3445 // back to nodes[1] upon timeout otherwise.
3446 assert_eq!(node_txn.len(), 1);
3450 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3451 nodes[1].block_notifier.block_connected_checked(&header, 1, &[&tx], &[1]);
3453 // Note no UpdateHTLCs event here from nodes[1] to nodes[0]!
3454 check_closed_broadcast!(nodes[1], false);
3455 check_added_monitors!(nodes[1], 1);
3457 // Now check that if we add the preimage to ChannelMonitor it broadcasts our HTLC-Success..
3459 let mut monitors = nodes[2].chan_monitor.simple_monitor.monitors.lock().unwrap();
3460 monitors.get_mut(&OutPoint{ txid: Txid::from_slice(&payment_event.commitment_msg.channel_id[..]).unwrap(), index: 0 }).unwrap()
3461 .provide_payment_preimage(&our_payment_hash, &our_payment_preimage);
3463 nodes[2].block_notifier.block_connected_checked(&header, 1, &[&tx], &[1]);
3464 let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap();
3465 assert_eq!(node_txn.len(), 1);
3466 assert_eq!(node_txn[0].input.len(), 1);
3467 assert_eq!(node_txn[0].input[0].previous_output.txid, tx.txid());
3468 assert_eq!(node_txn[0].lock_time, 0); // Must be an HTLC-Success
3469 assert_eq!(node_txn[0].input[0].witness.len(), 5); // Must be an HTLC-Success
3471 check_spends!(node_txn[0], tx);
3475 fn test_unconf_chan() {
3476 // After creating a chan between nodes, we disconnect all blocks previously seen to force a channel close on nodes[0] side
3477 let chanmon_cfgs = create_chanmon_cfgs(2);
3478 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3479 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3480 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3481 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3483 let channel_state = nodes[0].node.channel_state.lock().unwrap();
3484 assert_eq!(channel_state.by_id.len(), 1);
3485 assert_eq!(channel_state.short_to_id.len(), 1);
3486 mem::drop(channel_state);
3488 let mut headers = Vec::new();
3489 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3490 headers.push(header.clone());
3492 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
3493 headers.push(header.clone());
3495 let mut height = 99;
3496 while !headers.is_empty() {
3497 nodes[0].node.block_disconnected(&headers.pop().unwrap(), height);
3500 check_closed_broadcast!(nodes[0], false);
3501 check_added_monitors!(nodes[0], 1);
3502 let channel_state = nodes[0].node.channel_state.lock().unwrap();
3503 assert_eq!(channel_state.by_id.len(), 0);
3504 assert_eq!(channel_state.short_to_id.len(), 0);
3508 fn test_simple_peer_disconnect() {
3509 // Test that we can reconnect when there are no lost messages
3510 let chanmon_cfgs = create_chanmon_cfgs(3);
3511 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
3512 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
3513 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
3514 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3515 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
3517 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3518 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3519 reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3521 let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0;
3522 let payment_hash_2 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1;
3523 fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_hash_2);
3524 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_preimage_1, 1_000_000);
3526 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3527 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3528 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3530 let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0;
3531 let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0;
3532 let payment_hash_5 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1;
3533 let payment_hash_6 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1;
3535 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3536 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3538 claim_payment_along_route(&nodes[0], &vec!(&nodes[1], &nodes[2]), true, payment_preimage_3, 1_000_000);
3539 fail_payment_along_route(&nodes[0], &[&nodes[1], &nodes[2]], true, payment_hash_5);
3541 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (1, 0), (1, 0), (false, false));
3543 let events = nodes[0].node.get_and_clear_pending_events();
3544 assert_eq!(events.len(), 2);
3546 Event::PaymentSent { payment_preimage } => {
3547 assert_eq!(payment_preimage, payment_preimage_3);
3549 _ => panic!("Unexpected event"),
3552 Event::PaymentFailed { payment_hash, rejected_by_dest, .. } => {
3553 assert_eq!(payment_hash, payment_hash_5);
3554 assert!(rejected_by_dest);
3556 _ => panic!("Unexpected event"),
3560 claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_preimage_4, 1_000_000);
3561 fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_hash_6);
3564 fn do_test_drop_messages_peer_disconnect(messages_delivered: u8) {
3565 // Test that we can reconnect when in-flight HTLC updates get dropped
3566 let chanmon_cfgs = create_chanmon_cfgs(2);
3567 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3568 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3569 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3570 if messages_delivered == 0 {
3571 create_chan_between_nodes_with_value_a(&nodes[0], &nodes[1], 100000, 10001, InitFeatures::known(), InitFeatures::known());
3572 // nodes[1] doesn't receive the funding_locked message (it'll be re-sent on reconnect)
3574 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3577 let (payment_preimage_1, payment_hash_1) = get_payment_preimage_hash!(nodes[0]);
3579 let logger = test_utils::TestLogger::new();
3580 let payment_event = {
3581 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3582 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(&nodes[0].node.list_usable_channels()), &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
3583 nodes[0].node.send_payment(&route, payment_hash_1, &None).unwrap();
3584 check_added_monitors!(nodes[0], 1);
3586 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
3587 assert_eq!(events.len(), 1);
3588 SendEvent::from_event(events.remove(0))
3590 assert_eq!(nodes[1].node.get_our_node_id(), payment_event.node_id);
3592 if messages_delivered < 2 {
3593 // Drop the payment_event messages, and let them get re-generated in reconnect_nodes!
3595 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
3596 if messages_delivered >= 3 {
3597 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event.commitment_msg);
3598 check_added_monitors!(nodes[1], 1);
3599 let (bs_revoke_and_ack, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
3601 if messages_delivered >= 4 {
3602 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack);
3603 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
3604 check_added_monitors!(nodes[0], 1);
3606 if messages_delivered >= 5 {
3607 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_commitment_signed);
3608 let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
3609 // No commitment_signed so get_event_msg's assert(len == 1) passes
3610 check_added_monitors!(nodes[0], 1);
3612 if messages_delivered >= 6 {
3613 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack);
3614 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
3615 check_added_monitors!(nodes[1], 1);
3622 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3623 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3624 if messages_delivered < 3 {
3625 // Even if the funding_locked messages get exchanged, as long as nothing further was
3626 // received on either side, both sides will need to resend them.
3627 reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 1), (0, 0), (0, 0), (0, 0), (false, false));
3628 } else if messages_delivered == 3 {
3629 // nodes[0] still wants its RAA + commitment_signed
3630 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (-1, 0), (0, 0), (0, 0), (0, 0), (true, false));
3631 } else if messages_delivered == 4 {
3632 // nodes[0] still wants its commitment_signed
3633 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (-1, 0), (0, 0), (0, 0), (0, 0), (false, false));
3634 } else if messages_delivered == 5 {
3635 // nodes[1] still wants its final RAA
3636 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, true));
3637 } else if messages_delivered == 6 {
3638 // Everything was delivered...
3639 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3642 let events_1 = nodes[1].node.get_and_clear_pending_events();
3643 assert_eq!(events_1.len(), 1);
3645 Event::PendingHTLCsForwardable { .. } => { },
3646 _ => panic!("Unexpected event"),
3649 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3650 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3651 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3653 nodes[1].node.process_pending_htlc_forwards();
3655 let events_2 = nodes[1].node.get_and_clear_pending_events();
3656 assert_eq!(events_2.len(), 1);
3658 Event::PaymentReceived { ref payment_hash, ref payment_secret, amt } => {
3659 assert_eq!(payment_hash_1, *payment_hash);
3660 assert_eq!(*payment_secret, None);
3661 assert_eq!(amt, 1000000);
3663 _ => panic!("Unexpected event"),
3666 nodes[1].node.claim_funds(payment_preimage_1, &None, 1_000_000);
3667 check_added_monitors!(nodes[1], 1);
3669 let events_3 = nodes[1].node.get_and_clear_pending_msg_events();
3670 assert_eq!(events_3.len(), 1);
3671 let (update_fulfill_htlc, commitment_signed) = match events_3[0] {
3672 MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => {
3673 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
3674 assert!(updates.update_add_htlcs.is_empty());
3675 assert!(updates.update_fail_htlcs.is_empty());
3676 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
3677 assert!(updates.update_fail_malformed_htlcs.is_empty());
3678 assert!(updates.update_fee.is_none());
3679 (updates.update_fulfill_htlcs[0].clone(), updates.commitment_signed.clone())
3681 _ => panic!("Unexpected event"),
3684 if messages_delivered >= 1 {
3685 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_htlc);
3687 let events_4 = nodes[0].node.get_and_clear_pending_events();
3688 assert_eq!(events_4.len(), 1);
3690 Event::PaymentSent { ref payment_preimage } => {
3691 assert_eq!(payment_preimage_1, *payment_preimage);
3693 _ => panic!("Unexpected event"),
3696 if messages_delivered >= 2 {
3697 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed);
3698 check_added_monitors!(nodes[0], 1);
3699 let (as_revoke_and_ack, as_commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
3701 if messages_delivered >= 3 {
3702 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack);
3703 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
3704 check_added_monitors!(nodes[1], 1);
3706 if messages_delivered >= 4 {
3707 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_signed);
3708 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
3709 // No commitment_signed so get_event_msg's assert(len == 1) passes
3710 check_added_monitors!(nodes[1], 1);
3712 if messages_delivered >= 5 {
3713 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack);
3714 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
3715 check_added_monitors!(nodes[0], 1);
3722 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3723 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3724 if messages_delivered < 2 {
3725 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (1, 0), (0, 0), (0, 0), (false, false));
3726 //TODO: Deduplicate PaymentSent events, then enable this if:
3727 //if messages_delivered < 1 {
3728 let events_4 = nodes[0].node.get_and_clear_pending_events();
3729 assert_eq!(events_4.len(), 1);
3731 Event::PaymentSent { ref payment_preimage } => {
3732 assert_eq!(payment_preimage_1, *payment_preimage);
3734 _ => panic!("Unexpected event"),
3737 } else if messages_delivered == 2 {
3738 // nodes[0] still wants its RAA + commitment_signed
3739 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, -1), (0, 0), (0, 0), (0, 0), (false, true));
3740 } else if messages_delivered == 3 {
3741 // nodes[0] still wants its commitment_signed
3742 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, -1), (0, 0), (0, 0), (0, 0), (false, false));
3743 } else if messages_delivered == 4 {
3744 // nodes[1] still wants its final RAA
3745 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (true, false));
3746 } else if messages_delivered == 5 {
3747 // Everything was delivered...
3748 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3751 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3752 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3753 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3755 // Channel should still work fine...
3756 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3757 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(&nodes[0].node.list_usable_channels()), &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
3758 let payment_preimage_2 = send_along_route(&nodes[0], route, &[&nodes[1]], 1000000).0;
3759 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2, 1_000_000);
3763 fn test_drop_messages_peer_disconnect_a() {
3764 do_test_drop_messages_peer_disconnect(0);
3765 do_test_drop_messages_peer_disconnect(1);
3766 do_test_drop_messages_peer_disconnect(2);
3767 do_test_drop_messages_peer_disconnect(3);
3771 fn test_drop_messages_peer_disconnect_b() {
3772 do_test_drop_messages_peer_disconnect(4);
3773 do_test_drop_messages_peer_disconnect(5);
3774 do_test_drop_messages_peer_disconnect(6);
3778 fn test_funding_peer_disconnect() {
3779 // Test that we can lock in our funding tx while disconnected
3780 let chanmon_cfgs = create_chanmon_cfgs(2);
3781 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3782 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3783 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3784 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001, InitFeatures::known(), InitFeatures::known());
3786 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3787 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3789 confirm_transaction(&nodes[0].block_notifier, &nodes[0].chain_monitor, &tx, tx.version);
3790 let events_1 = nodes[0].node.get_and_clear_pending_msg_events();
3791 assert_eq!(events_1.len(), 1);
3793 MessageSendEvent::SendFundingLocked { ref node_id, msg: _ } => {
3794 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
3796 _ => panic!("Unexpected event"),
3799 reconnect_nodes(&nodes[0], &nodes[1], (false, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3801 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3802 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3804 confirm_transaction(&nodes[1].block_notifier, &nodes[1].chain_monitor, &tx, tx.version);
3805 let events_2 = nodes[1].node.get_and_clear_pending_msg_events();
3806 assert_eq!(events_2.len(), 2);
3807 let funding_locked = match events_2[0] {
3808 MessageSendEvent::SendFundingLocked { ref node_id, ref msg } => {
3809 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
3812 _ => panic!("Unexpected event"),
3814 let bs_announcement_sigs = match events_2[1] {
3815 MessageSendEvent::SendAnnouncementSignatures { ref node_id, ref msg } => {
3816 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
3819 _ => panic!("Unexpected event"),
3822 reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
3824 nodes[0].node.handle_funding_locked(&nodes[1].node.get_our_node_id(), &funding_locked);
3825 nodes[0].node.handle_announcement_signatures(&nodes[1].node.get_our_node_id(), &bs_announcement_sigs);
3826 let events_3 = nodes[0].node.get_and_clear_pending_msg_events();
3827 assert_eq!(events_3.len(), 2);
3828 let as_announcement_sigs = match events_3[0] {
3829 MessageSendEvent::SendAnnouncementSignatures { ref node_id, ref msg } => {
3830 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
3833 _ => panic!("Unexpected event"),
3835 let (as_announcement, as_update) = match events_3[1] {
3836 MessageSendEvent::BroadcastChannelAnnouncement { ref msg, ref update_msg } => {
3837 (msg.clone(), update_msg.clone())
3839 _ => panic!("Unexpected event"),
3842 nodes[1].node.handle_announcement_signatures(&nodes[0].node.get_our_node_id(), &as_announcement_sigs);
3843 let events_4 = nodes[1].node.get_and_clear_pending_msg_events();
3844 assert_eq!(events_4.len(), 1);
3845 let (_, bs_update) = match events_4[0] {
3846 MessageSendEvent::BroadcastChannelAnnouncement { ref msg, ref update_msg } => {
3847 (msg.clone(), update_msg.clone())
3849 _ => panic!("Unexpected event"),
3852 nodes[0].net_graph_msg_handler.handle_channel_announcement(&as_announcement).unwrap();
3853 nodes[0].net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
3854 nodes[0].net_graph_msg_handler.handle_channel_update(&as_update).unwrap();
3856 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3857 let logger = test_utils::TestLogger::new();
3858 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
3859 let (payment_preimage, _) = send_along_route(&nodes[0], route, &[&nodes[1]], 1000000);
3860 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage, 1_000_000);
3864 fn test_drop_messages_peer_disconnect_dual_htlc() {
3865 // Test that we can handle reconnecting when both sides of a channel have pending
3866 // commitment_updates when we disconnect.
3867 let chanmon_cfgs = create_chanmon_cfgs(2);
3868 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
3869 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
3870 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
3871 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
3872 let logger = test_utils::TestLogger::new();
3874 let (payment_preimage_1, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
3876 // Now try to send a second payment which will fail to send
3877 let (payment_preimage_2, payment_hash_2) = get_payment_preimage_hash!(nodes[0]);
3878 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
3879 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
3880 nodes[0].node.send_payment(&route, payment_hash_2, &None).unwrap();
3881 check_added_monitors!(nodes[0], 1);
3883 let events_1 = nodes[0].node.get_and_clear_pending_msg_events();
3884 assert_eq!(events_1.len(), 1);
3886 MessageSendEvent::UpdateHTLCs { .. } => {},
3887 _ => panic!("Unexpected event"),
3890 assert!(nodes[1].node.claim_funds(payment_preimage_1, &None, 1_000_000));
3891 check_added_monitors!(nodes[1], 1);
3893 let events_2 = nodes[1].node.get_and_clear_pending_msg_events();
3894 assert_eq!(events_2.len(), 1);
3896 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 } } => {
3897 assert_eq!(*node_id, nodes[0].node.get_our_node_id());
3898 assert!(update_add_htlcs.is_empty());
3899 assert_eq!(update_fulfill_htlcs.len(), 1);
3900 assert!(update_fail_htlcs.is_empty());
3901 assert!(update_fail_malformed_htlcs.is_empty());
3902 assert!(update_fee.is_none());
3904 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_htlcs[0]);
3905 let events_3 = nodes[0].node.get_and_clear_pending_events();
3906 assert_eq!(events_3.len(), 1);
3908 Event::PaymentSent { ref payment_preimage } => {
3909 assert_eq!(*payment_preimage, payment_preimage_1);
3911 _ => panic!("Unexpected event"),
3914 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), commitment_signed);
3915 let _ = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
3916 // No commitment_signed so get_event_msg's assert(len == 1) passes
3917 check_added_monitors!(nodes[0], 1);
3919 _ => panic!("Unexpected event"),
3922 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
3923 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
3925 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
3926 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
3927 assert_eq!(reestablish_1.len(), 1);
3928 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
3929 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
3930 assert_eq!(reestablish_2.len(), 1);
3932 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
3933 let as_resp = handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
3934 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
3935 let bs_resp = handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
3937 assert!(as_resp.0.is_none());
3938 assert!(bs_resp.0.is_none());
3940 assert!(bs_resp.1.is_none());
3941 assert!(bs_resp.2.is_none());
3943 assert!(as_resp.3 == RAACommitmentOrder::CommitmentFirst);
3945 assert_eq!(as_resp.2.as_ref().unwrap().update_add_htlcs.len(), 1);
3946 assert!(as_resp.2.as_ref().unwrap().update_fulfill_htlcs.is_empty());
3947 assert!(as_resp.2.as_ref().unwrap().update_fail_htlcs.is_empty());
3948 assert!(as_resp.2.as_ref().unwrap().update_fail_malformed_htlcs.is_empty());
3949 assert!(as_resp.2.as_ref().unwrap().update_fee.is_none());
3950 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &as_resp.2.as_ref().unwrap().update_add_htlcs[0]);
3951 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_resp.2.as_ref().unwrap().commitment_signed);
3952 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
3953 // No commitment_signed so get_event_msg's assert(len == 1) passes
3954 check_added_monitors!(nodes[1], 1);
3956 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), as_resp.1.as_ref().unwrap());
3957 let bs_second_commitment_signed = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
3958 assert!(bs_second_commitment_signed.update_add_htlcs.is_empty());
3959 assert!(bs_second_commitment_signed.update_fulfill_htlcs.is_empty());
3960 assert!(bs_second_commitment_signed.update_fail_htlcs.is_empty());
3961 assert!(bs_second_commitment_signed.update_fail_malformed_htlcs.is_empty());
3962 assert!(bs_second_commitment_signed.update_fee.is_none());
3963 check_added_monitors!(nodes[1], 1);
3965 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack);
3966 let as_commitment_signed = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
3967 assert!(as_commitment_signed.update_add_htlcs.is_empty());
3968 assert!(as_commitment_signed.update_fulfill_htlcs.is_empty());
3969 assert!(as_commitment_signed.update_fail_htlcs.is_empty());
3970 assert!(as_commitment_signed.update_fail_malformed_htlcs.is_empty());
3971 assert!(as_commitment_signed.update_fee.is_none());
3972 check_added_monitors!(nodes[0], 1);
3974 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_commitment_signed.commitment_signed);
3975 let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
3976 // No commitment_signed so get_event_msg's assert(len == 1) passes
3977 check_added_monitors!(nodes[0], 1);
3979 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_signed.commitment_signed);
3980 let bs_second_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
3981 // No commitment_signed so get_event_msg's assert(len == 1) passes
3982 check_added_monitors!(nodes[1], 1);
3984 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack);
3985 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
3986 check_added_monitors!(nodes[1], 1);
3988 expect_pending_htlcs_forwardable!(nodes[1]);
3990 let events_5 = nodes[1].node.get_and_clear_pending_events();
3991 assert_eq!(events_5.len(), 1);
3993 Event::PaymentReceived { ref payment_hash, ref payment_secret, amt: _ } => {
3994 assert_eq!(payment_hash_2, *payment_hash);
3995 assert_eq!(*payment_secret, None);
3997 _ => panic!("Unexpected event"),
4000 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke_and_ack);
4001 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
4002 check_added_monitors!(nodes[0], 1);
4004 claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2, 1_000_000);
4007 fn do_test_htlc_timeout(send_partial_mpp: bool) {
4008 // If the user fails to claim/fail an HTLC within the HTLC CLTV timeout we fail it for them
4009 // to avoid our counterparty failing the channel.
4010 let chanmon_cfgs = create_chanmon_cfgs(2);
4011 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4012 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4013 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4015 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4016 let logger = test_utils::TestLogger::new();
4018 let our_payment_hash = if send_partial_mpp {
4019 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
4020 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
4021 let (_, our_payment_hash) = get_payment_preimage_hash!(&nodes[0]);
4022 let payment_secret = PaymentSecret([0xdb; 32]);
4023 // Use the utility function send_payment_along_path to send the payment with MPP data which
4024 // indicates there are more HTLCs coming.
4025 nodes[0].node.send_payment_along_path(&route.paths[0], &our_payment_hash, &Some(payment_secret), 200000, CHAN_CONFIRM_DEPTH).unwrap();
4026 check_added_monitors!(nodes[0], 1);
4027 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
4028 assert_eq!(events.len(), 1);
4029 // Now do the relevant commitment_signed/RAA dances along the path, noting that the final
4030 // hop should *not* yet generate any PaymentReceived event(s).
4031 pass_along_path(&nodes[0], &[&nodes[1]], 100000, our_payment_hash, Some(payment_secret), events.drain(..).next().unwrap(), false);
4034 route_payment(&nodes[0], &[&nodes[1]], 100000).1
4037 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4038 nodes[0].block_notifier.block_connected_checked(&header, 101, &[], &[]);
4039 nodes[1].block_notifier.block_connected_checked(&header, 101, &[], &[]);
4040 for i in 102..TEST_FINAL_CLTV + 100 + 1 - CLTV_CLAIM_BUFFER - LATENCY_GRACE_PERIOD_BLOCKS {
4041 header.prev_blockhash = header.bitcoin_hash();
4042 nodes[0].block_notifier.block_connected_checked(&header, i, &[], &[]);
4043 nodes[1].block_notifier.block_connected_checked(&header, i, &[], &[]);
4046 expect_pending_htlcs_forwardable!(nodes[1]);
4048 check_added_monitors!(nodes[1], 1);
4049 let htlc_timeout_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
4050 assert!(htlc_timeout_updates.update_add_htlcs.is_empty());
4051 assert_eq!(htlc_timeout_updates.update_fail_htlcs.len(), 1);
4052 assert!(htlc_timeout_updates.update_fail_malformed_htlcs.is_empty());
4053 assert!(htlc_timeout_updates.update_fee.is_none());
4055 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_timeout_updates.update_fail_htlcs[0]);
4056 commitment_signed_dance!(nodes[0], nodes[1], htlc_timeout_updates.commitment_signed, false);
4057 // 100_000 msat as u64, followed by a height of 123 as u32
4058 let mut expected_failure_data = byte_utils::be64_to_array(100_000).to_vec();
4059 expected_failure_data.extend_from_slice(&byte_utils::be32_to_array(123));
4060 expect_payment_failed!(nodes[0], our_payment_hash, true, 0x4000 | 15, &expected_failure_data[..]);
4064 fn test_htlc_timeout() {
4065 do_test_htlc_timeout(true);
4066 do_test_htlc_timeout(false);
4069 fn do_test_holding_cell_htlc_add_timeouts(forwarded_htlc: bool) {
4070 // Tests that HTLCs in the holding cell are timed out after the requisite number of blocks.
4071 let chanmon_cfgs = create_chanmon_cfgs(3);
4072 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
4073 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
4074 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
4075 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4076 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
4077 let logger = test_utils::TestLogger::new();
4079 // Route a first payment to get the 1 -> 2 channel in awaiting_raa...
4080 let (_, first_payment_hash) = get_payment_preimage_hash!(nodes[0]);
4082 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
4083 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
4084 nodes[1].node.send_payment(&route, first_payment_hash, &None).unwrap();
4086 assert_eq!(nodes[1].node.get_and_clear_pending_msg_events().len(), 1);
4087 check_added_monitors!(nodes[1], 1);
4089 // Now attempt to route a second payment, which should be placed in the holding cell
4090 let (_, second_payment_hash) = get_payment_preimage_hash!(nodes[0]);
4092 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
4093 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
4094 nodes[0].node.send_payment(&route, second_payment_hash, &None).unwrap();
4095 check_added_monitors!(nodes[0], 1);
4096 let payment_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0));
4097 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
4098 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
4099 expect_pending_htlcs_forwardable!(nodes[1]);
4100 check_added_monitors!(nodes[1], 0);
4102 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
4103 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
4104 nodes[1].node.send_payment(&route, second_payment_hash, &None).unwrap();
4105 check_added_monitors!(nodes[1], 0);
4108 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4109 nodes[1].block_notifier.block_connected_checked(&header, 101, &[], &[]);
4110 for i in 102..TEST_FINAL_CLTV + 100 - CLTV_CLAIM_BUFFER - LATENCY_GRACE_PERIOD_BLOCKS {
4111 header.prev_blockhash = header.bitcoin_hash();
4112 nodes[1].block_notifier.block_connected_checked(&header, i, &[], &[]);
4115 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
4116 assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
4118 header.prev_blockhash = header.bitcoin_hash();
4119 nodes[1].block_notifier.block_connected_checked(&header, TEST_FINAL_CLTV + 100 - CLTV_CLAIM_BUFFER - LATENCY_GRACE_PERIOD_BLOCKS, &[], &[]);
4122 expect_pending_htlcs_forwardable!(nodes[1]);
4123 check_added_monitors!(nodes[1], 1);
4124 let fail_commit = nodes[1].node.get_and_clear_pending_msg_events();
4125 assert_eq!(fail_commit.len(), 1);
4126 match fail_commit[0] {
4127 MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fail_htlcs, ref commitment_signed, .. }, .. } => {
4128 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]);
4129 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, true, true);
4131 _ => unreachable!(),
4133 expect_payment_failed!(nodes[0], second_payment_hash, false);
4134 if let &MessageSendEvent::PaymentFailureNetworkUpdate { ref update } = &nodes[0].node.get_and_clear_pending_msg_events()[0] {
4136 &HTLCFailChannelUpdate::ChannelUpdateMessage { .. } => {},
4137 _ => panic!("Unexpected event"),
4140 panic!("Unexpected event");
4143 expect_payment_failed!(nodes[1], second_payment_hash, true);
4148 fn test_holding_cell_htlc_add_timeouts() {
4149 do_test_holding_cell_htlc_add_timeouts(false);
4150 do_test_holding_cell_htlc_add_timeouts(true);
4154 fn test_invalid_channel_announcement() {
4155 //Test BOLT 7 channel_announcement msg requirement for final node, gather data to build customed channel_announcement msgs
4156 let secp_ctx = Secp256k1::new();
4157 let chanmon_cfgs = create_chanmon_cfgs(2);
4158 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4159 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4160 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4162 let chan_announcement = create_chan_between_nodes(&nodes[0], &nodes[1], InitFeatures::known(), InitFeatures::known());
4164 let a_channel_lock = nodes[0].node.channel_state.lock().unwrap();
4165 let b_channel_lock = nodes[1].node.channel_state.lock().unwrap();
4166 let as_chan = a_channel_lock.by_id.get(&chan_announcement.3).unwrap();
4167 let bs_chan = b_channel_lock.by_id.get(&chan_announcement.3).unwrap();
4169 nodes[0].net_graph_msg_handler.handle_htlc_fail_channel_update(&msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id : as_chan.get_short_channel_id().unwrap(), is_permanent: false } );
4171 let as_bitcoin_key = as_chan.get_local_keys().inner.local_channel_pubkeys.funding_pubkey;
4172 let bs_bitcoin_key = bs_chan.get_local_keys().inner.local_channel_pubkeys.funding_pubkey;
4174 let as_network_key = nodes[0].node.get_our_node_id();
4175 let bs_network_key = nodes[1].node.get_our_node_id();
4177 let were_node_one = as_bitcoin_key.serialize()[..] < bs_bitcoin_key.serialize()[..];
4179 let mut chan_announcement;
4181 macro_rules! dummy_unsigned_msg {
4183 msgs::UnsignedChannelAnnouncement {
4184 features: ChannelFeatures::known(),
4185 chain_hash: genesis_block(Network::Testnet).header.bitcoin_hash(),
4186 short_channel_id: as_chan.get_short_channel_id().unwrap(),
4187 node_id_1: if were_node_one { as_network_key } else { bs_network_key },
4188 node_id_2: if were_node_one { bs_network_key } else { as_network_key },
4189 bitcoin_key_1: if were_node_one { as_bitcoin_key } else { bs_bitcoin_key },
4190 bitcoin_key_2: if were_node_one { bs_bitcoin_key } else { as_bitcoin_key },
4191 excess_data: Vec::new(),
4196 macro_rules! sign_msg {
4197 ($unsigned_msg: expr) => {
4198 let msghash = Message::from_slice(&Sha256dHash::hash(&$unsigned_msg.encode()[..])[..]).unwrap();
4199 let as_bitcoin_sig = secp_ctx.sign(&msghash, &as_chan.get_local_keys().inner.funding_key);
4200 let bs_bitcoin_sig = secp_ctx.sign(&msghash, &bs_chan.get_local_keys().inner.funding_key);
4201 let as_node_sig = secp_ctx.sign(&msghash, &nodes[0].keys_manager.get_node_secret());
4202 let bs_node_sig = secp_ctx.sign(&msghash, &nodes[1].keys_manager.get_node_secret());
4203 chan_announcement = msgs::ChannelAnnouncement {
4204 node_signature_1 : if were_node_one { as_node_sig } else { bs_node_sig},
4205 node_signature_2 : if were_node_one { bs_node_sig } else { as_node_sig},
4206 bitcoin_signature_1: if were_node_one { as_bitcoin_sig } else { bs_bitcoin_sig },
4207 bitcoin_signature_2 : if were_node_one { bs_bitcoin_sig } else { as_bitcoin_sig },
4208 contents: $unsigned_msg
4213 let unsigned_msg = dummy_unsigned_msg!();
4214 sign_msg!(unsigned_msg);
4215 assert_eq!(nodes[0].net_graph_msg_handler.handle_channel_announcement(&chan_announcement).unwrap(), true);
4216 let _ = nodes[0].net_graph_msg_handler.handle_htlc_fail_channel_update(&msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id : as_chan.get_short_channel_id().unwrap(), is_permanent: false } );
4218 // Configured with Network::Testnet
4219 let mut unsigned_msg = dummy_unsigned_msg!();
4220 unsigned_msg.chain_hash = genesis_block(Network::Bitcoin).header.bitcoin_hash();
4221 sign_msg!(unsigned_msg);
4222 assert!(nodes[0].net_graph_msg_handler.handle_channel_announcement(&chan_announcement).is_err());
4224 let mut unsigned_msg = dummy_unsigned_msg!();
4225 unsigned_msg.chain_hash = BlockHash::hash(&[1,2,3,4,5,6,7,8,9]);
4226 sign_msg!(unsigned_msg);
4227 assert!(nodes[0].net_graph_msg_handler.handle_channel_announcement(&chan_announcement).is_err());
4231 fn test_no_txn_manager_serialize_deserialize() {
4232 let chanmon_cfgs = create_chanmon_cfgs(2);
4233 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4234 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4235 let logger: test_utils::TestLogger;
4236 let fee_estimator: test_utils::TestFeeEstimator;
4237 let new_chan_monitor: test_utils::TestChannelMonitor;
4238 let keys_manager: test_utils::TestKeysInterface;
4239 let nodes_0_deserialized: ChannelManager<EnforcingChannelKeys, &test_utils::TestChannelMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
4240 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4242 let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001, InitFeatures::known(), InitFeatures::known());
4244 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4246 let nodes_0_serialized = nodes[0].node.encode();
4247 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
4248 nodes[0].chan_monitor.simple_monitor.monitors.lock().unwrap().iter().next().unwrap().1.write_for_disk(&mut chan_0_monitor_serialized).unwrap();
4250 logger = test_utils::TestLogger::new();
4251 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
4252 new_chan_monitor = test_utils::TestChannelMonitor::new(nodes[0].chain_monitor.clone(), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator);
4253 nodes[0].chan_monitor = &new_chan_monitor;
4254 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
4255 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingChannelKeys>)>::read(&mut chan_0_monitor_read).unwrap();
4256 assert!(chan_0_monitor_read.is_empty());
4258 let mut nodes_0_read = &nodes_0_serialized[..];
4259 let config = UserConfig::default();
4260 keys_manager = test_utils::TestKeysInterface::new(&nodes[0].node_seed, Network::Testnet);
4261 let (_, nodes_0_deserialized_tmp) = {
4262 let mut channel_monitors = HashMap::new();
4263 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
4264 <(BlockHash, ChannelManager<EnforcingChannelKeys, &test_utils::TestChannelMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4265 default_config: config,
4266 keys_manager: &keys_manager,
4267 fee_estimator: &fee_estimator,
4268 monitor: nodes[0].chan_monitor,
4269 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4271 channel_monitors: &mut channel_monitors,
4274 nodes_0_deserialized = nodes_0_deserialized_tmp;
4275 assert!(nodes_0_read.is_empty());
4277 assert!(nodes[0].chan_monitor.add_monitor(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
4278 nodes[0].node = &nodes_0_deserialized;
4279 nodes[0].block_notifier.register_listener(nodes[0].node);
4280 assert_eq!(nodes[0].node.list_channels().len(), 1);
4281 check_added_monitors!(nodes[0], 1);
4283 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4284 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
4285 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4286 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
4288 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
4289 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
4290 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
4291 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
4293 let (funding_locked, _) = create_chan_between_nodes_with_value_confirm(&nodes[0], &nodes[1], &tx);
4294 let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_locked);
4295 for node in nodes.iter() {
4296 assert!(node.net_graph_msg_handler.handle_channel_announcement(&announcement).unwrap());
4297 node.net_graph_msg_handler.handle_channel_update(&as_update).unwrap();
4298 node.net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
4301 send_payment(&nodes[0], &[&nodes[1]], 1000000, 1_000_000);
4305 fn test_manager_serialize_deserialize_events() {
4306 // This test makes sure the events field in ChannelManager survives de/serialization
4307 let chanmon_cfgs = create_chanmon_cfgs(2);
4308 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4309 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4310 let fee_estimator: test_utils::TestFeeEstimator;
4311 let logger: test_utils::TestLogger;
4312 let new_chan_monitor: test_utils::TestChannelMonitor;
4313 let keys_manager: test_utils::TestKeysInterface;
4314 let nodes_0_deserialized: ChannelManager<EnforcingChannelKeys, &test_utils::TestChannelMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
4315 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4317 // Start creating a channel, but stop right before broadcasting the event message FundingBroadcastSafe
4318 let channel_value = 100000;
4319 let push_msat = 10001;
4320 let a_flags = InitFeatures::known();
4321 let b_flags = InitFeatures::known();
4322 let node_a = nodes.pop().unwrap();
4323 let node_b = nodes.pop().unwrap();
4324 node_a.node.create_channel(node_b.node.get_our_node_id(), channel_value, push_msat, 42, None).unwrap();
4325 node_b.node.handle_open_channel(&node_a.node.get_our_node_id(), a_flags, &get_event_msg!(node_a, MessageSendEvent::SendOpenChannel, node_b.node.get_our_node_id()));
4326 node_a.node.handle_accept_channel(&node_b.node.get_our_node_id(), b_flags, &get_event_msg!(node_b, MessageSendEvent::SendAcceptChannel, node_a.node.get_our_node_id()));
4328 let (temporary_channel_id, tx, funding_output) = create_funding_transaction(&node_a, channel_value, 42);
4330 node_a.node.funding_transaction_generated(&temporary_channel_id, funding_output);
4331 check_added_monitors!(node_a, 0);
4333 node_b.node.handle_funding_created(&node_a.node.get_our_node_id(), &get_event_msg!(node_a, MessageSendEvent::SendFundingCreated, node_b.node.get_our_node_id()));
4335 let mut added_monitors = node_b.chan_monitor.added_monitors.lock().unwrap();
4336 assert_eq!(added_monitors.len(), 1);
4337 assert_eq!(added_monitors[0].0, funding_output);
4338 added_monitors.clear();
4341 node_a.node.handle_funding_signed(&node_b.node.get_our_node_id(), &get_event_msg!(node_b, MessageSendEvent::SendFundingSigned, node_a.node.get_our_node_id()));
4343 let mut added_monitors = node_a.chan_monitor.added_monitors.lock().unwrap();
4344 assert_eq!(added_monitors.len(), 1);
4345 assert_eq!(added_monitors[0].0, funding_output);
4346 added_monitors.clear();
4348 // Normally, this is where node_a would check for a FundingBroadcastSafe event, but the test de/serializes first instead
4353 // Start the de/seriailization process mid-channel creation to check that the channel manager will hold onto events that are serialized
4354 let nodes_0_serialized = nodes[0].node.encode();
4355 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
4356 nodes[0].chan_monitor.simple_monitor.monitors.lock().unwrap().iter().next().unwrap().1.write_for_disk(&mut chan_0_monitor_serialized).unwrap();
4358 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
4359 logger = test_utils::TestLogger::new();
4360 new_chan_monitor = test_utils::TestChannelMonitor::new(nodes[0].chain_monitor.clone(), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator);
4361 nodes[0].chan_monitor = &new_chan_monitor;
4362 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
4363 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingChannelKeys>)>::read(&mut chan_0_monitor_read).unwrap();
4364 assert!(chan_0_monitor_read.is_empty());
4366 let mut nodes_0_read = &nodes_0_serialized[..];
4367 let config = UserConfig::default();
4368 keys_manager = test_utils::TestKeysInterface::new(&nodes[0].node_seed, Network::Testnet);
4369 let (_, nodes_0_deserialized_tmp) = {
4370 let mut channel_monitors = HashMap::new();
4371 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
4372 <(BlockHash, ChannelManager<EnforcingChannelKeys, &test_utils::TestChannelMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4373 default_config: config,
4374 keys_manager: &keys_manager,
4375 fee_estimator: &fee_estimator,
4376 monitor: nodes[0].chan_monitor,
4377 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4379 channel_monitors: &mut channel_monitors,
4382 nodes_0_deserialized = nodes_0_deserialized_tmp;
4383 assert!(nodes_0_read.is_empty());
4385 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4387 assert!(nodes[0].chan_monitor.add_monitor(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
4388 nodes[0].node = &nodes_0_deserialized;
4390 // After deserializing, make sure the FundingBroadcastSafe event is still held by the channel manager
4391 let events_4 = nodes[0].node.get_and_clear_pending_events();
4392 assert_eq!(events_4.len(), 1);
4394 Event::FundingBroadcastSafe { ref funding_txo, user_channel_id } => {
4395 assert_eq!(user_channel_id, 42);
4396 assert_eq!(*funding_txo, funding_output);
4398 _ => panic!("Unexpected event"),
4401 // Make sure the channel is functioning as though the de/serialization never happened
4402 nodes[0].block_notifier.register_listener(nodes[0].node);
4403 assert_eq!(nodes[0].node.list_channels().len(), 1);
4404 check_added_monitors!(nodes[0], 1);
4406 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4407 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
4408 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4409 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
4411 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
4412 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
4413 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
4414 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
4416 let (funding_locked, _) = create_chan_between_nodes_with_value_confirm(&nodes[0], &nodes[1], &tx);
4417 let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_locked);
4418 for node in nodes.iter() {
4419 assert!(node.net_graph_msg_handler.handle_channel_announcement(&announcement).unwrap());
4420 node.net_graph_msg_handler.handle_channel_update(&as_update).unwrap();
4421 node.net_graph_msg_handler.handle_channel_update(&bs_update).unwrap();
4424 send_payment(&nodes[0], &[&nodes[1]], 1000000, 1_000_000);
4428 fn test_simple_manager_serialize_deserialize() {
4429 let chanmon_cfgs = create_chanmon_cfgs(2);
4430 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4431 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4432 let logger: test_utils::TestLogger;
4433 let fee_estimator: test_utils::TestFeeEstimator;
4434 let new_chan_monitor: test_utils::TestChannelMonitor;
4435 let keys_manager: test_utils::TestKeysInterface;
4436 let nodes_0_deserialized: ChannelManager<EnforcingChannelKeys, &test_utils::TestChannelMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
4437 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4438 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4440 let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
4441 let (_, our_payment_hash) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
4443 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4445 let nodes_0_serialized = nodes[0].node.encode();
4446 let mut chan_0_monitor_serialized = test_utils::TestVecWriter(Vec::new());
4447 nodes[0].chan_monitor.simple_monitor.monitors.lock().unwrap().iter().next().unwrap().1.write_for_disk(&mut chan_0_monitor_serialized).unwrap();
4449 logger = test_utils::TestLogger::new();
4450 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
4451 new_chan_monitor = test_utils::TestChannelMonitor::new(nodes[0].chain_monitor.clone(), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator);
4452 nodes[0].chan_monitor = &new_chan_monitor;
4453 let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..];
4454 let (_, mut chan_0_monitor) = <(BlockHash, ChannelMonitor<EnforcingChannelKeys>)>::read(&mut chan_0_monitor_read).unwrap();
4455 assert!(chan_0_monitor_read.is_empty());
4457 let mut nodes_0_read = &nodes_0_serialized[..];
4458 keys_manager = test_utils::TestKeysInterface::new(&nodes[0].node_seed, Network::Testnet);
4459 let (_, nodes_0_deserialized_tmp) = {
4460 let mut channel_monitors = HashMap::new();
4461 channel_monitors.insert(chan_0_monitor.get_funding_txo().0, &mut chan_0_monitor);
4462 <(BlockHash, ChannelManager<EnforcingChannelKeys, &test_utils::TestChannelMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4463 default_config: UserConfig::default(),
4464 keys_manager: &keys_manager,
4465 fee_estimator: &fee_estimator,
4466 monitor: nodes[0].chan_monitor,
4467 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4469 channel_monitors: &mut channel_monitors,
4472 nodes_0_deserialized = nodes_0_deserialized_tmp;
4473 assert!(nodes_0_read.is_empty());
4475 assert!(nodes[0].chan_monitor.add_monitor(chan_0_monitor.get_funding_txo().0, chan_0_monitor).is_ok());
4476 nodes[0].node = &nodes_0_deserialized;
4477 check_added_monitors!(nodes[0], 1);
4479 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
4481 fail_payment(&nodes[0], &[&nodes[1]], our_payment_hash);
4482 claim_payment(&nodes[0], &[&nodes[1]], our_payment_preimage, 1_000_000);
4486 fn test_manager_serialize_deserialize_inconsistent_monitor() {
4487 // Test deserializing a ChannelManager with an out-of-date ChannelMonitor
4488 let chanmon_cfgs = create_chanmon_cfgs(4);
4489 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
4490 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
4491 let logger: test_utils::TestLogger;
4492 let fee_estimator: test_utils::TestFeeEstimator;
4493 let new_chan_monitor: test_utils::TestChannelMonitor;
4494 let keys_manager: test_utils::TestKeysInterface;
4495 let nodes_0_deserialized: ChannelManager<EnforcingChannelKeys, &test_utils::TestChannelMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>;
4496 let mut nodes = create_network(4, &node_cfgs, &node_chanmgrs);
4497 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4498 create_announced_chan_between_nodes(&nodes, 2, 0, InitFeatures::known(), InitFeatures::known());
4499 let (_, _, channel_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 3, InitFeatures::known(), InitFeatures::known());
4501 let mut node_0_stale_monitors_serialized = Vec::new();
4502 for monitor in nodes[0].chan_monitor.simple_monitor.monitors.lock().unwrap().iter() {
4503 let mut writer = test_utils::TestVecWriter(Vec::new());
4504 monitor.1.write_for_disk(&mut writer).unwrap();
4505 node_0_stale_monitors_serialized.push(writer.0);
4508 let (our_payment_preimage, _) = route_payment(&nodes[2], &[&nodes[0], &nodes[1]], 1000000);
4510 // Serialize the ChannelManager here, but the monitor we keep up-to-date
4511 let nodes_0_serialized = nodes[0].node.encode();
4513 route_payment(&nodes[0], &[&nodes[3]], 1000000);
4514 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4515 nodes[2].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4516 nodes[3].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
4518 // Now the ChannelMonitor (which is now out-of-sync with ChannelManager for channel w/
4520 let mut node_0_monitors_serialized = Vec::new();
4521 for monitor in nodes[0].chan_monitor.simple_monitor.monitors.lock().unwrap().iter() {
4522 let mut writer = test_utils::TestVecWriter(Vec::new());
4523 monitor.1.write_for_disk(&mut writer).unwrap();
4524 node_0_monitors_serialized.push(writer.0);
4527 logger = test_utils::TestLogger::new();
4528 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
4529 new_chan_monitor = test_utils::TestChannelMonitor::new(nodes[0].chain_monitor.clone(), nodes[0].tx_broadcaster.clone(), &logger, &fee_estimator);
4530 nodes[0].chan_monitor = &new_chan_monitor;
4532 let mut node_0_stale_monitors = Vec::new();
4533 for serialized in node_0_stale_monitors_serialized.iter() {
4534 let mut read = &serialized[..];
4535 let (_, monitor) = <(BlockHash, ChannelMonitor<EnforcingChannelKeys>)>::read(&mut read).unwrap();
4536 assert!(read.is_empty());
4537 node_0_stale_monitors.push(monitor);
4540 let mut node_0_monitors = Vec::new();
4541 for serialized in node_0_monitors_serialized.iter() {
4542 let mut read = &serialized[..];
4543 let (_, monitor) = <(BlockHash, ChannelMonitor<EnforcingChannelKeys>)>::read(&mut read).unwrap();
4544 assert!(read.is_empty());
4545 node_0_monitors.push(monitor);
4548 keys_manager = test_utils::TestKeysInterface::new(&nodes[0].node_seed, Network::Testnet);
4550 let mut nodes_0_read = &nodes_0_serialized[..];
4551 if let Err(msgs::DecodeError::InvalidValue) =
4552 <(BlockHash, ChannelManager<EnforcingChannelKeys, &test_utils::TestChannelMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4553 default_config: UserConfig::default(),
4554 keys_manager: &keys_manager,
4555 fee_estimator: &fee_estimator,
4556 monitor: nodes[0].chan_monitor,
4557 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4559 channel_monitors: &mut node_0_stale_monitors.iter_mut().map(|monitor| { (monitor.get_funding_txo().0, monitor) }).collect(),
4561 panic!("If the monitor(s) are stale, this indicates a bug and we should get an Err return");
4564 let mut nodes_0_read = &nodes_0_serialized[..];
4565 let (_, nodes_0_deserialized_tmp) =
4566 <(BlockHash, ChannelManager<EnforcingChannelKeys, &test_utils::TestChannelMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut nodes_0_read, ChannelManagerReadArgs {
4567 default_config: UserConfig::default(),
4568 keys_manager: &keys_manager,
4569 fee_estimator: &fee_estimator,
4570 monitor: nodes[0].chan_monitor,
4571 tx_broadcaster: nodes[0].tx_broadcaster.clone(),
4573 channel_monitors: &mut node_0_monitors.iter_mut().map(|monitor| { (monitor.get_funding_txo().0, monitor) }).collect(),
4575 nodes_0_deserialized = nodes_0_deserialized_tmp;
4576 assert!(nodes_0_read.is_empty());
4578 { // Channel close should result in a commitment tx and an HTLC tx
4579 let txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
4580 assert_eq!(txn.len(), 2);
4581 assert_eq!(txn[0].input[0].previous_output.txid, funding_tx.txid());
4582 assert_eq!(txn[1].input[0].previous_output.txid, txn[0].txid());
4585 for monitor in node_0_monitors.drain(..) {
4586 assert!(nodes[0].chan_monitor.add_monitor(monitor.get_funding_txo().0, monitor).is_ok());
4587 check_added_monitors!(nodes[0], 1);
4589 nodes[0].node = &nodes_0_deserialized;
4591 // nodes[1] and nodes[2] have no lost state with nodes[0]...
4592 reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
4593 reconnect_nodes(&nodes[0], &nodes[2], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
4594 //... and we can even still claim the payment!
4595 claim_payment(&nodes[2], &[&nodes[0], &nodes[1]], our_payment_preimage, 1_000_000);
4597 nodes[3].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4598 let reestablish = get_event_msg!(nodes[3], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id());
4599 nodes[0].node.peer_connected(&nodes[3].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
4600 nodes[0].node.handle_channel_reestablish(&nodes[3].node.get_our_node_id(), &reestablish);
4601 let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
4602 assert_eq!(msg_events.len(), 1);
4603 if let MessageSendEvent::HandleError { ref action, .. } = msg_events[0] {
4605 &ErrorAction::SendErrorMessage { ref msg } => {
4606 assert_eq!(msg.channel_id, channel_id);
4608 _ => panic!("Unexpected event!"),
4613 macro_rules! check_spendable_outputs {
4614 ($node: expr, $der_idx: expr, $keysinterface: expr, $chan_value: expr) => {
4616 let events = $node.chan_monitor.simple_monitor.get_and_clear_pending_events();
4617 let mut txn = Vec::new();
4618 for event in events {
4620 Event::SpendableOutputs { ref outputs } => {
4621 for outp in outputs {
4623 SpendableOutputDescriptor::StaticOutputRemotePayment { ref outpoint, ref output, ref key_derivation_params } => {
4625 previous_output: outpoint.clone(),
4626 script_sig: Script::new(),
4628 witness: Vec::new(),
4631 script_pubkey: Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(),
4632 value: output.value,
4634 let mut spend_tx = Transaction {
4640 let secp_ctx = Secp256k1::new();
4641 let keys = $keysinterface.derive_channel_keys($chan_value, key_derivation_params.0, key_derivation_params.1);
4642 let remotepubkey = keys.pubkeys().payment_point;
4643 let witness_script = Address::p2pkh(&::bitcoin::PublicKey{compressed: true, key: remotepubkey}, Network::Testnet).script_pubkey();
4644 let sighash = Message::from_slice(&bip143::SighashComponents::new(&spend_tx).sighash_all(&spend_tx.input[0], &witness_script, output.value)[..]).unwrap();
4645 let remotesig = secp_ctx.sign(&sighash, &keys.inner.payment_key);
4646 spend_tx.input[0].witness.push(remotesig.serialize_der().to_vec());
4647 spend_tx.input[0].witness[0].push(SigHashType::All as u8);
4648 spend_tx.input[0].witness.push(remotepubkey.serialize().to_vec());
4651 SpendableOutputDescriptor::DynamicOutputP2WSH { ref outpoint, ref per_commitment_point, ref to_self_delay, ref output, ref key_derivation_params, ref remote_revocation_pubkey } => {
4653 previous_output: outpoint.clone(),
4654 script_sig: Script::new(),
4655 sequence: *to_self_delay as u32,
4656 witness: Vec::new(),
4659 script_pubkey: Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(),
4660 value: output.value,
4662 let mut spend_tx = Transaction {
4668 let secp_ctx = Secp256k1::new();
4669 let keys = $keysinterface.derive_channel_keys($chan_value, key_derivation_params.0, key_derivation_params.1);
4670 if let Ok(delayed_payment_key) = chan_utils::derive_private_key(&secp_ctx, &per_commitment_point, &keys.inner.delayed_payment_base_key) {
4672 let delayed_payment_pubkey = PublicKey::from_secret_key(&secp_ctx, &delayed_payment_key);
4673 let witness_script = chan_utils::get_revokeable_redeemscript(remote_revocation_pubkey, *to_self_delay, &delayed_payment_pubkey);
4674 let sighash = Message::from_slice(&bip143::SighashComponents::new(&spend_tx).sighash_all(&spend_tx.input[0], &witness_script, output.value)[..]).unwrap();
4675 let local_delayedsig = secp_ctx.sign(&sighash, &delayed_payment_key);
4676 spend_tx.input[0].witness.push(local_delayedsig.serialize_der().to_vec());
4677 spend_tx.input[0].witness[0].push(SigHashType::All as u8);
4678 spend_tx.input[0].witness.push(vec!()); //MINIMALIF
4679 spend_tx.input[0].witness.push(witness_script.clone().into_bytes());
4683 SpendableOutputDescriptor::StaticOutput { ref outpoint, ref output } => {
4684 let secp_ctx = Secp256k1::new();
4686 previous_output: outpoint.clone(),
4687 script_sig: Script::new(),
4689 witness: Vec::new(),
4692 script_pubkey: Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(),
4693 value: output.value,
4695 let mut spend_tx = Transaction {
4699 output: vec![outp.clone()],
4702 match ExtendedPrivKey::new_master(Network::Testnet, &$node.node_seed) {
4704 match master_key.ckd_priv(&secp_ctx, ChildNumber::from_hardened_idx($der_idx).expect("key space exhausted")) {
4706 Err(_) => panic!("Your RNG is busted"),
4709 Err(_) => panic!("Your rng is busted"),
4712 let pubkey = ExtendedPubKey::from_private(&secp_ctx, &secret).public_key;
4713 let witness_script = Address::p2pkh(&pubkey, Network::Testnet).script_pubkey();
4714 let sighash = Message::from_slice(&bip143::SighashComponents::new(&spend_tx).sighash_all(&spend_tx.input[0], &witness_script, output.value)[..]).unwrap();
4715 let sig = secp_ctx.sign(&sighash, &secret.private_key.key);
4716 spend_tx.input[0].witness.push(sig.serialize_der().to_vec());
4717 spend_tx.input[0].witness[0].push(SigHashType::All as u8);
4718 spend_tx.input[0].witness.push(pubkey.key.serialize().to_vec());
4724 _ => panic!("Unexpected event"),
4733 fn test_claim_sizeable_push_msat() {
4734 // Incidentally test SpendableOutput event generation due to detection of to_local output on commitment tx
4735 let chanmon_cfgs = create_chanmon_cfgs(2);
4736 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4737 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4738 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4740 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 99000000, InitFeatures::known(), InitFeatures::known());
4741 nodes[1].node.force_close_channel(&chan.2);
4742 check_closed_broadcast!(nodes[1], false);
4743 check_added_monitors!(nodes[1], 1);
4744 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
4745 assert_eq!(node_txn.len(), 1);
4746 check_spends!(node_txn[0], chan.3);
4747 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
4749 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4750 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![node_txn[0].clone()] }, 0);
4751 connect_blocks(&nodes[1].block_notifier, ANTI_REORG_DELAY - 1, 1, true, header.bitcoin_hash());
4753 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4754 assert_eq!(spend_txn.len(), 1);
4755 check_spends!(spend_txn[0], node_txn[0]);
4759 fn test_claim_on_remote_sizeable_push_msat() {
4760 // Same test as previous, just test on remote commitment tx, as per_commitment_point registration changes following you're funder/fundee and
4761 // to_remote output is encumbered by a P2WPKH
4762 let chanmon_cfgs = create_chanmon_cfgs(2);
4763 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4764 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4765 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4767 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 99000000, InitFeatures::known(), InitFeatures::known());
4768 nodes[0].node.force_close_channel(&chan.2);
4769 check_closed_broadcast!(nodes[0], false);
4770 check_added_monitors!(nodes[0], 1);
4772 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
4773 assert_eq!(node_txn.len(), 1);
4774 check_spends!(node_txn[0], chan.3);
4775 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
4777 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4778 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![node_txn[0].clone()] }, 0);
4779 check_closed_broadcast!(nodes[1], false);
4780 check_added_monitors!(nodes[1], 1);
4781 connect_blocks(&nodes[1].block_notifier, ANTI_REORG_DELAY - 1, 1, true, header.bitcoin_hash());
4783 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4784 assert_eq!(spend_txn.len(), 2);
4785 assert_eq!(spend_txn[0], spend_txn[1]);
4786 check_spends!(spend_txn[0], node_txn[0]);
4790 fn test_claim_on_remote_revoked_sizeable_push_msat() {
4791 // Same test as previous, just test on remote revoked commitment tx, as per_commitment_point registration changes following you're funder/fundee and
4792 // to_remote output is encumbered by a P2WPKH
4794 let chanmon_cfgs = create_chanmon_cfgs(2);
4795 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4796 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4797 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4799 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 59000000, InitFeatures::known(), InitFeatures::known());
4800 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
4801 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan.2);
4802 assert_eq!(revoked_local_txn[0].input.len(), 1);
4803 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan.3.txid());
4805 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 3_000_000);
4806 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4807 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 0);
4808 check_closed_broadcast!(nodes[1], false);
4809 check_added_monitors!(nodes[1], 1);
4811 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
4812 let header_1 = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4813 nodes[1].block_notifier.block_connected(&Block { header: header_1, txdata: vec![node_txn[0].clone()] }, 1);
4814 connect_blocks(&nodes[1].block_notifier, ANTI_REORG_DELAY - 1, 1, true, header.bitcoin_hash());
4816 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4817 assert_eq!(spend_txn.len(), 3);
4818 assert_eq!(spend_txn[0], spend_txn[1]); // to_remote output on revoked remote commitment_tx
4819 check_spends!(spend_txn[0], revoked_local_txn[0]);
4820 check_spends!(spend_txn[2], node_txn[0]);
4824 fn test_static_spendable_outputs_preimage_tx() {
4825 let chanmon_cfgs = create_chanmon_cfgs(2);
4826 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4827 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4828 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4830 // Create some initial channels
4831 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4833 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
4835 let commitment_tx = get_local_commitment_txn!(nodes[0], chan_1.2);
4836 assert_eq!(commitment_tx[0].input.len(), 1);
4837 assert_eq!(commitment_tx[0].input[0].previous_output.txid, chan_1.3.txid());
4839 // Settle A's commitment tx on B's chain
4840 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4841 assert!(nodes[1].node.claim_funds(payment_preimage, &None, 3_000_000));
4842 check_added_monitors!(nodes[1], 1);
4843 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![commitment_tx[0].clone()] }, 1);
4844 check_added_monitors!(nodes[1], 1);
4845 let events = nodes[1].node.get_and_clear_pending_msg_events();
4847 MessageSendEvent::UpdateHTLCs { .. } => {},
4848 _ => panic!("Unexpected event"),
4851 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
4852 _ => panic!("Unexepected event"),
4855 // Check B's monitor was able to send back output descriptor event for preimage tx on A's commitment tx
4856 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); // ChannelManager : 2 (local commitment tx + HTLC-Success), ChannelMonitor: preimage tx
4857 assert_eq!(node_txn.len(), 3);
4858 check_spends!(node_txn[0], commitment_tx[0]);
4859 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
4860 check_spends!(node_txn[1], chan_1.3);
4861 check_spends!(node_txn[2], node_txn[1]);
4863 let header_1 = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4864 nodes[1].block_notifier.block_connected(&Block { header: header_1, txdata: vec![node_txn[0].clone()] }, 1);
4865 connect_blocks(&nodes[1].block_notifier, ANTI_REORG_DELAY - 1, 1, true, header.bitcoin_hash());
4867 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4868 assert_eq!(spend_txn.len(), 1);
4869 check_spends!(spend_txn[0], node_txn[0]);
4873 fn test_static_spendable_outputs_timeout_tx() {
4874 let chanmon_cfgs = create_chanmon_cfgs(2);
4875 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4876 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4877 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4879 // Create some initial channels
4880 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4882 // Rebalance the network a bit by relaying one payment through all the channels ...
4883 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
4885 let (_, our_payment_hash) = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3_000_000);
4887 let commitment_tx = get_local_commitment_txn!(nodes[0], chan_1.2);
4888 assert_eq!(commitment_tx[0].input.len(), 1);
4889 assert_eq!(commitment_tx[0].input[0].previous_output.txid, chan_1.3.txid());
4891 // Settle A's commitment tx on B' chain
4892 let header = BlockHeader { version: 0x2000_0000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
4893 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![commitment_tx[0].clone()] }, 0);
4894 check_added_monitors!(nodes[1], 1);
4895 let events = nodes[1].node.get_and_clear_pending_msg_events();
4897 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
4898 _ => panic!("Unexpected event"),
4901 // Check B's monitor was able to send back output descriptor event for timeout tx on A's commitment tx
4902 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
4903 assert_eq!(node_txn.len(), 3); // ChannelManager : 2 (local commitent tx + HTLC-timeout), ChannelMonitor: timeout tx
4904 check_spends!(node_txn[0], commitment_tx[0].clone());
4905 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
4906 check_spends!(node_txn[1], chan_1.3.clone());
4907 check_spends!(node_txn[2], node_txn[1]);
4909 let header_1 = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4910 nodes[1].block_notifier.block_connected(&Block { header: header_1, txdata: vec![node_txn[0].clone()] }, 1);
4911 connect_blocks(&nodes[1].block_notifier, ANTI_REORG_DELAY - 1, 1, true, header.bitcoin_hash());
4912 expect_payment_failed!(nodes[1], our_payment_hash, true);
4914 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4915 assert_eq!(spend_txn.len(), 3); // SpendableOutput: remote_commitment_tx.to_remote (*2), timeout_tx.output (*1)
4916 check_spends!(spend_txn[2], node_txn[0].clone());
4920 fn test_static_spendable_outputs_justice_tx_revoked_commitment_tx() {
4921 let chanmon_cfgs = create_chanmon_cfgs(2);
4922 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4923 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4924 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4926 // Create some initial channels
4927 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4929 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
4930 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
4931 assert_eq!(revoked_local_txn[0].input.len(), 1);
4932 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
4934 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 3_000_000);
4936 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4937 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 0);
4938 check_closed_broadcast!(nodes[1], false);
4939 check_added_monitors!(nodes[1], 1);
4941 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
4942 assert_eq!(node_txn.len(), 2);
4943 assert_eq!(node_txn[0].input.len(), 2);
4944 check_spends!(node_txn[0], revoked_local_txn[0]);
4946 let header_1 = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4947 nodes[1].block_notifier.block_connected(&Block { header: header_1, txdata: vec![node_txn[0].clone()] }, 1);
4948 connect_blocks(&nodes[1].block_notifier, ANTI_REORG_DELAY - 1, 1, true, header.bitcoin_hash());
4950 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
4951 assert_eq!(spend_txn.len(), 1);
4952 check_spends!(spend_txn[0], node_txn[0]);
4956 fn test_static_spendable_outputs_justice_tx_revoked_htlc_timeout_tx() {
4957 let chanmon_cfgs = create_chanmon_cfgs(2);
4958 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
4959 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
4960 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
4962 // Create some initial channels
4963 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
4965 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
4966 let revoked_local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
4967 assert_eq!(revoked_local_txn[0].input.len(), 1);
4968 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
4970 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 3_000_000);
4972 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
4973 // A will generate HTLC-Timeout from revoked commitment tx
4974 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
4975 check_closed_broadcast!(nodes[0], false);
4976 check_added_monitors!(nodes[0], 1);
4978 let revoked_htlc_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
4979 assert_eq!(revoked_htlc_txn.len(), 2);
4980 assert_eq!(revoked_htlc_txn[0].input.len(), 1);
4981 assert_eq!(revoked_htlc_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
4982 check_spends!(revoked_htlc_txn[0], revoked_local_txn[0]);
4983 check_spends!(revoked_htlc_txn[1], chan_1.3);
4985 // B will generate justice tx from A's revoked commitment/HTLC tx
4986 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![revoked_local_txn[0].clone(), revoked_htlc_txn[0].clone()] }, 0);
4987 check_closed_broadcast!(nodes[1], false);
4988 check_added_monitors!(nodes[1], 1);
4990 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
4991 assert_eq!(node_txn.len(), 4); // ChannelMonitor: justice tx on revoked commitment, justice tx on revoked HTLC-timeout, adjusted justice tx, ChannelManager: local commitment tx
4992 assert_eq!(node_txn[0].input.len(), 2);
4993 check_spends!(node_txn[0], revoked_local_txn[0]);
4994 check_spends!(node_txn[1], chan_1.3);
4995 assert_eq!(node_txn[2].input.len(), 1);
4996 check_spends!(node_txn[2], revoked_htlc_txn[0]);
4997 assert_eq!(node_txn[3].input.len(), 1);
4998 check_spends!(node_txn[3], revoked_local_txn[0]);
5000 let header_1 = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5001 nodes[1].block_notifier.block_connected(&Block { header: header_1, txdata: vec![node_txn[0].clone(), node_txn[2].clone()] }, 1);
5002 connect_blocks(&nodes[1].block_notifier, ANTI_REORG_DELAY - 1, 1, true, header.bitcoin_hash());
5004 // Check B's ChannelMonitor was able to generate the right spendable output descriptor
5005 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
5006 assert_eq!(spend_txn.len(), 2);
5007 check_spends!(spend_txn[0], node_txn[0]);
5008 check_spends!(spend_txn[1], node_txn[2]);
5012 fn test_static_spendable_outputs_justice_tx_revoked_htlc_success_tx() {
5013 let chanmon_cfgs = create_chanmon_cfgs(2);
5014 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5015 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5016 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5018 // Create some initial channels
5019 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5021 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
5022 let revoked_local_txn = get_local_commitment_txn!(nodes[1], chan_1.2);
5023 assert_eq!(revoked_local_txn[0].input.len(), 1);
5024 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid());
5026 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 3_000_000);
5028 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5029 // B will generate HTLC-Success from revoked commitment tx
5030 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
5031 check_closed_broadcast!(nodes[1], false);
5032 check_added_monitors!(nodes[1], 1);
5033 let revoked_htlc_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5035 assert_eq!(revoked_htlc_txn.len(), 2);
5036 assert_eq!(revoked_htlc_txn[0].input.len(), 1);
5037 assert_eq!(revoked_htlc_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5038 check_spends!(revoked_htlc_txn[0], revoked_local_txn[0]);
5040 // A will generate justice tx from B's revoked commitment/HTLC tx
5041 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![revoked_local_txn[0].clone(), revoked_htlc_txn[0].clone()] }, 1);
5042 check_closed_broadcast!(nodes[0], false);
5043 check_added_monitors!(nodes[0], 1);
5045 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
5046 assert_eq!(node_txn.len(), 3); // ChannelMonitor: justice tx on revoked commitment, justice tx on revoked HTLC-success, ChannelManager: local commitment tx
5047 assert_eq!(node_txn[2].input.len(), 1);
5048 check_spends!(node_txn[2], revoked_htlc_txn[0]);
5050 let header_1 = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5051 nodes[0].block_notifier.block_connected(&Block { header: header_1, txdata: vec![node_txn[0].clone(), node_txn[2].clone()] }, 1);
5052 connect_blocks(&nodes[0].block_notifier, ANTI_REORG_DELAY - 1, 1, true, header.bitcoin_hash());
5054 // Check A's ChannelMonitor was able to generate the right spendable output descriptor
5055 let spend_txn = check_spendable_outputs!(nodes[0], 1, node_cfgs[0].keys_manager, 100000);
5056 assert_eq!(spend_txn.len(), 5); // Duplicated SpendableOutput due to block rescan after revoked htlc output tracking
5057 assert_eq!(spend_txn[0], spend_txn[1]);
5058 assert_eq!(spend_txn[0], spend_txn[2]);
5059 check_spends!(spend_txn[0], revoked_local_txn[0]); // spending to_remote output from revoked local tx
5060 check_spends!(spend_txn[3], node_txn[0]); // spending justice tx output from revoked local tx htlc received output
5061 check_spends!(spend_txn[4], node_txn[2]); // spending justice tx output on htlc success tx
5065 fn test_onchain_to_onchain_claim() {
5066 // Test that in case of channel closure, we detect the state of output thanks to
5067 // ChainWatchInterface and claim HTLC on downstream peer's remote commitment tx.
5068 // First, have C claim an HTLC against its own latest commitment transaction.
5069 // Then, broadcast these to B, which should update the monitor downstream on the A<->B
5071 // Finally, check that B will claim the HTLC output if A's latest commitment transaction
5074 let chanmon_cfgs = create_chanmon_cfgs(3);
5075 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
5076 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
5077 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
5079 // Create some initial channels
5080 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5081 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
5083 // Rebalance the network a bit by relaying one payment through all the channels ...
5084 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000, 8_000_000);
5085 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000, 8_000_000);
5087 let (payment_preimage, _payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000);
5088 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
5089 let commitment_tx = get_local_commitment_txn!(nodes[2], chan_2.2);
5090 check_spends!(commitment_tx[0], chan_2.3);
5091 nodes[2].node.claim_funds(payment_preimage, &None, 3_000_000);
5092 check_added_monitors!(nodes[2], 1);
5093 let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
5094 assert!(updates.update_add_htlcs.is_empty());
5095 assert!(updates.update_fail_htlcs.is_empty());
5096 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
5097 assert!(updates.update_fail_malformed_htlcs.is_empty());
5099 nodes[2].block_notifier.block_connected(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1);
5100 check_closed_broadcast!(nodes[2], false);
5101 check_added_monitors!(nodes[2], 1);
5103 let c_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 2 (commitment tx, HTLC-Success tx), ChannelMonitor : 1 (HTLC-Success tx)
5104 assert_eq!(c_txn.len(), 3);
5105 assert_eq!(c_txn[0], c_txn[2]);
5106 assert_eq!(commitment_tx[0], c_txn[1]);
5107 check_spends!(c_txn[1], chan_2.3);
5108 check_spends!(c_txn[2], c_txn[1]);
5109 assert_eq!(c_txn[1].input[0].witness.clone().last().unwrap().len(), 71);
5110 assert_eq!(c_txn[2].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5111 assert!(c_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
5112 assert_eq!(c_txn[0].lock_time, 0); // Success tx
5114 // 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
5115 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![c_txn[1].clone(), c_txn[2].clone()]}, 1);
5117 let mut b_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5118 // ChannelMonitor: claim tx, ChannelManager: local commitment tx + HTLC-timeout tx
5119 assert_eq!(b_txn.len(), 3);
5120 check_spends!(b_txn[1], chan_2.3); // B local commitment tx, issued by ChannelManager
5121 check_spends!(b_txn[2], b_txn[1]); // HTLC-Timeout on B local commitment tx, issued by ChannelManager
5122 assert_eq!(b_txn[2].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
5123 assert!(b_txn[2].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output
5124 assert_ne!(b_txn[2].lock_time, 0); // Timeout tx
5125 check_spends!(b_txn[0], c_txn[1]); // timeout tx on C remote commitment tx, issued by ChannelMonitor, * 2 due to block rescan
5126 assert_eq!(b_txn[0].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5127 assert!(b_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
5128 assert_ne!(b_txn[2].lock_time, 0); // Timeout tx
5131 check_added_monitors!(nodes[1], 1);
5132 let msg_events = nodes[1].node.get_and_clear_pending_msg_events();
5133 check_added_monitors!(nodes[1], 1);
5134 match msg_events[0] {
5135 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
5136 _ => panic!("Unexpected event"),
5138 match msg_events[1] {
5139 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, .. } } => {
5140 assert!(update_add_htlcs.is_empty());
5141 assert!(update_fail_htlcs.is_empty());
5142 assert_eq!(update_fulfill_htlcs.len(), 1);
5143 assert!(update_fail_malformed_htlcs.is_empty());
5144 assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
5146 _ => panic!("Unexpected event"),
5148 // Broadcast A's commitment tx on B's chain to see if we are able to claim inbound HTLC with our HTLC-Success tx
5149 let commitment_tx = get_local_commitment_txn!(nodes[0], chan_1.2);
5150 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1);
5151 let b_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5152 // ChannelMonitor: HTLC-Success tx, ChannelManager: local commitment tx + HTLC-Success tx
5153 assert_eq!(b_txn.len(), 3);
5154 check_spends!(b_txn[1], chan_1.3);
5155 check_spends!(b_txn[2], b_txn[1]);
5156 check_spends!(b_txn[0], commitment_tx[0]);
5157 assert_eq!(b_txn[0].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
5158 assert!(b_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment
5159 assert_eq!(b_txn[0].lock_time, 0); // Success tx
5161 check_closed_broadcast!(nodes[1], false);
5162 check_added_monitors!(nodes[1], 1);
5166 fn test_duplicate_payment_hash_one_failure_one_success() {
5167 // Topology : A --> B --> C
5168 // We route 2 payments with same hash between B and C, one will be timeout, the other successfully claim
5169 let chanmon_cfgs = create_chanmon_cfgs(3);
5170 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
5171 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
5172 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
5174 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5175 let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
5177 let (our_payment_preimage, duplicate_payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 900000);
5178 *nodes[0].network_payment_count.borrow_mut() -= 1;
5179 assert_eq!(route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 900000).1, duplicate_payment_hash);
5181 let commitment_txn = get_local_commitment_txn!(nodes[2], chan_2.2);
5182 assert_eq!(commitment_txn[0].input.len(), 1);
5183 check_spends!(commitment_txn[0], chan_2.3);
5185 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5186 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![commitment_txn[0].clone()] }, 1);
5187 check_closed_broadcast!(nodes[1], false);
5188 check_added_monitors!(nodes[1], 1);
5190 let htlc_timeout_tx;
5191 { // Extract one of the two HTLC-Timeout transaction
5192 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5193 // ChannelMonitor: timeout tx * 2, ChannelManager: local commitment tx + HTLC-timeout * 2
5194 assert_eq!(node_txn.len(), 5);
5195 check_spends!(node_txn[0], commitment_txn[0]);
5196 assert_eq!(node_txn[0].input.len(), 1);
5197 check_spends!(node_txn[1], commitment_txn[0]);
5198 assert_eq!(node_txn[1].input.len(), 1);
5199 assert_ne!(node_txn[0].input[0], node_txn[1].input[0]);
5200 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5201 assert_eq!(node_txn[1].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5202 check_spends!(node_txn[2], chan_2.3);
5203 check_spends!(node_txn[3], node_txn[2]);
5204 check_spends!(node_txn[4], node_txn[2]);
5205 htlc_timeout_tx = node_txn[1].clone();
5208 nodes[2].node.claim_funds(our_payment_preimage, &None, 900_000);
5209 nodes[2].block_notifier.block_connected(&Block { header, txdata: vec![commitment_txn[0].clone()] }, 1);
5210 check_added_monitors!(nodes[2], 3);
5211 let events = nodes[2].node.get_and_clear_pending_msg_events();
5213 MessageSendEvent::UpdateHTLCs { .. } => {},
5214 _ => panic!("Unexpected event"),
5217 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
5218 _ => panic!("Unexepected event"),
5220 let htlc_success_txn: Vec<_> = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
5221 assert_eq!(htlc_success_txn.len(), 5); // ChannelMonitor: HTLC-Success txn (*2 due to 2-HTLC outputs), ChannelManager: local commitment tx + HTLC-Success txn (*2 due to 2-HTLC outputs)
5222 check_spends!(htlc_success_txn[2], chan_2.3);
5223 check_spends!(htlc_success_txn[3], htlc_success_txn[2]);
5224 check_spends!(htlc_success_txn[4], htlc_success_txn[2]);
5225 assert_eq!(htlc_success_txn[0], htlc_success_txn[3]);
5226 assert_eq!(htlc_success_txn[0].input.len(), 1);
5227 assert_eq!(htlc_success_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5228 assert_eq!(htlc_success_txn[1], htlc_success_txn[4]);
5229 assert_eq!(htlc_success_txn[1].input.len(), 1);
5230 assert_eq!(htlc_success_txn[1].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5231 assert_ne!(htlc_success_txn[0].input[0], htlc_success_txn[1].input[0]);
5232 check_spends!(htlc_success_txn[0], commitment_txn[0]);
5233 check_spends!(htlc_success_txn[1], commitment_txn[0]);
5235 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![htlc_timeout_tx] }, 200);
5236 connect_blocks(&nodes[1].block_notifier, ANTI_REORG_DELAY - 1, 200, true, header.bitcoin_hash());
5237 expect_pending_htlcs_forwardable!(nodes[1]);
5238 let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
5239 assert!(htlc_updates.update_add_htlcs.is_empty());
5240 assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
5241 assert_eq!(htlc_updates.update_fail_htlcs[0].htlc_id, 1);
5242 assert!(htlc_updates.update_fulfill_htlcs.is_empty());
5243 assert!(htlc_updates.update_fail_malformed_htlcs.is_empty());
5244 check_added_monitors!(nodes[1], 1);
5246 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]);
5247 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
5249 commitment_signed_dance!(nodes[0], nodes[1], &htlc_updates.commitment_signed, false, true);
5250 let events = nodes[0].node.get_and_clear_pending_msg_events();
5251 assert_eq!(events.len(), 1);
5253 MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelClosed { .. } } => {
5255 _ => { panic!("Unexpected event"); }
5258 expect_payment_failed!(nodes[0], duplicate_payment_hash, false);
5260 // Solve 2nd HTLC by broadcasting on B's chain HTLC-Success Tx from C
5261 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![htlc_success_txn[0].clone()] }, 200);
5262 let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
5263 assert!(updates.update_add_htlcs.is_empty());
5264 assert!(updates.update_fail_htlcs.is_empty());
5265 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
5266 assert_eq!(updates.update_fulfill_htlcs[0].htlc_id, 0);
5267 assert!(updates.update_fail_malformed_htlcs.is_empty());
5268 check_added_monitors!(nodes[1], 1);
5270 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
5271 commitment_signed_dance!(nodes[0], nodes[1], &updates.commitment_signed, false);
5273 let events = nodes[0].node.get_and_clear_pending_events();
5275 Event::PaymentSent { ref payment_preimage } => {
5276 assert_eq!(*payment_preimage, our_payment_preimage);
5278 _ => panic!("Unexpected event"),
5283 fn test_dynamic_spendable_outputs_local_htlc_success_tx() {
5284 let chanmon_cfgs = create_chanmon_cfgs(2);
5285 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5286 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5287 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5289 // Create some initial channels
5290 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5292 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000).0;
5293 let local_txn = get_local_commitment_txn!(nodes[1], chan_1.2);
5294 assert_eq!(local_txn[0].input.len(), 1);
5295 check_spends!(local_txn[0], chan_1.3);
5297 // Give B knowledge of preimage to be able to generate a local HTLC-Success Tx
5298 nodes[1].node.claim_funds(payment_preimage, &None, 9_000_000);
5299 check_added_monitors!(nodes[1], 1);
5300 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5301 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![local_txn[0].clone()] }, 1);
5302 check_added_monitors!(nodes[1], 1);
5303 let events = nodes[1].node.get_and_clear_pending_msg_events();
5305 MessageSendEvent::UpdateHTLCs { .. } => {},
5306 _ => panic!("Unexpected event"),
5309 MessageSendEvent::BroadcastChannelUpdate { .. } => {},
5310 _ => panic!("Unexepected event"),
5313 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
5314 assert_eq!(node_txn[0].input.len(), 1);
5315 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
5316 check_spends!(node_txn[0], local_txn[0]);
5317 vec![node_txn[0].clone(), node_txn[2].clone()]
5320 let header_201 = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5321 nodes[1].block_notifier.block_connected(&Block { header: header_201, txdata: node_txn.clone() }, 201);
5322 connect_blocks(&nodes[1].block_notifier, ANTI_REORG_DELAY - 1, 201, true, header_201.bitcoin_hash());
5324 // Verify that B is able to spend its own HTLC-Success tx thanks to spendable output event given back by its ChannelMonitor
5325 let spend_txn = check_spendable_outputs!(nodes[1], 1, node_cfgs[1].keys_manager, 100000);
5326 assert_eq!(spend_txn.len(), 2);
5327 check_spends!(spend_txn[0], node_txn[0]);
5328 check_spends!(spend_txn[1], node_txn[1]);
5331 fn do_test_fail_backwards_unrevoked_remote_announce(deliver_last_raa: bool, announce_latest: bool) {
5332 // Test that we fail backwards the full set of HTLCs we need to when remote broadcasts an
5333 // unrevoked commitment transaction.
5334 // This includes HTLCs which were below the dust threshold as well as HTLCs which were awaiting
5335 // a remote RAA before they could be failed backwards (and combinations thereof).
5336 // We also test duplicate-hash HTLCs by adding two nodes on each side of the target nodes which
5337 // use the same payment hashes.
5338 // Thus, we use a six-node network:
5343 // And test where C fails back to A/B when D announces its latest commitment transaction
5344 let chanmon_cfgs = create_chanmon_cfgs(6);
5345 let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
5346 let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
5347 let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
5348 let logger = test_utils::TestLogger::new();
5350 create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known());
5351 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
5352 let chan = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known());
5353 create_announced_chan_between_nodes(&nodes, 3, 4, InitFeatures::known(), InitFeatures::known());
5354 create_announced_chan_between_nodes(&nodes, 3, 5, InitFeatures::known(), InitFeatures::known());
5356 // Rebalance and check output sanity...
5357 send_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 500000, 500_000);
5358 send_payment(&nodes[1], &[&nodes[2], &nodes[3], &nodes[5]], 500000, 500_000);
5359 assert_eq!(get_local_commitment_txn!(nodes[3], chan.2)[0].output.len(), 2);
5361 let ds_dust_limit = nodes[3].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().our_dust_limit_satoshis;
5363 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
5365 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
5366 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
5367 let our_node_id = &nodes[1].node.get_our_node_id();
5368 let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), None, &Vec::new(), ds_dust_limit*1000, TEST_FINAL_CLTV, &logger).unwrap();
5370 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
5372 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
5374 let (_, payment_hash_3) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 1000000);
5376 let (_, payment_hash_4) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 1000000);
5377 let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
5379 send_along_route_with_hash(&nodes[1], route.clone(), &[&nodes[2], &nodes[3], &nodes[5]], 1000000, payment_hash_3);
5381 send_along_route_with_hash(&nodes[1], route, &[&nodes[2], &nodes[3], &nodes[5]], 1000000, payment_hash_4);
5384 let (_, payment_hash_5) = route_payment(&nodes[0], &[&nodes[2], &nodes[3], &nodes[4]], 1000000);
5386 let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), None, &Vec::new(), ds_dust_limit*1000, TEST_FINAL_CLTV, &logger).unwrap();
5387 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
5390 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
5392 let route = get_route(our_node_id, &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[5].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV, &logger).unwrap();
5393 send_along_route_with_hash(&nodes[1], route, &[&nodes[2], &nodes[3], &nodes[5]], 1000000, payment_hash_6);
5395 // Double-check that six of the new HTLC were added
5396 // We now have six HTLCs pending over the dust limit and six HTLCs under the dust limit (ie,
5397 // with to_local and to_remote outputs, 8 outputs and 6 HTLCs not included).
5398 assert_eq!(get_local_commitment_txn!(nodes[3], chan.2).len(), 1);
5399 assert_eq!(get_local_commitment_txn!(nodes[3], chan.2)[0].output.len(), 8);
5401 // Now fail back three of the over-dust-limit and three of the under-dust-limit payments in one go.
5402 // Fail 0th below-dust, 4th above-dust, 8th above-dust, 10th below-dust HTLCs
5403 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_1, &None));
5404 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_3, &None));
5405 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_5, &None));
5406 assert!(nodes[4].node.fail_htlc_backwards(&payment_hash_6, &None));
5407 check_added_monitors!(nodes[4], 0);
5408 expect_pending_htlcs_forwardable!(nodes[4]);
5409 check_added_monitors!(nodes[4], 1);
5411 let four_removes = get_htlc_update_msgs!(nodes[4], nodes[3].node.get_our_node_id());
5412 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[0]);
5413 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[1]);
5414 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[2]);
5415 nodes[3].node.handle_update_fail_htlc(&nodes[4].node.get_our_node_id(), &four_removes.update_fail_htlcs[3]);
5416 commitment_signed_dance!(nodes[3], nodes[4], four_removes.commitment_signed, false);
5418 // Fail 3rd below-dust and 7th above-dust HTLCs
5419 assert!(nodes[5].node.fail_htlc_backwards(&payment_hash_2, &None));
5420 assert!(nodes[5].node.fail_htlc_backwards(&payment_hash_4, &None));
5421 check_added_monitors!(nodes[5], 0);
5422 expect_pending_htlcs_forwardable!(nodes[5]);
5423 check_added_monitors!(nodes[5], 1);
5425 let two_removes = get_htlc_update_msgs!(nodes[5], nodes[3].node.get_our_node_id());
5426 nodes[3].node.handle_update_fail_htlc(&nodes[5].node.get_our_node_id(), &two_removes.update_fail_htlcs[0]);
5427 nodes[3].node.handle_update_fail_htlc(&nodes[5].node.get_our_node_id(), &two_removes.update_fail_htlcs[1]);
5428 commitment_signed_dance!(nodes[3], nodes[5], two_removes.commitment_signed, false);
5430 let ds_prev_commitment_tx = get_local_commitment_txn!(nodes[3], chan.2);
5432 expect_pending_htlcs_forwardable!(nodes[3]);
5433 check_added_monitors!(nodes[3], 1);
5434 let six_removes = get_htlc_update_msgs!(nodes[3], nodes[2].node.get_our_node_id());
5435 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[0]);
5436 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[1]);
5437 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[2]);
5438 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[3]);
5439 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[4]);
5440 nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &six_removes.update_fail_htlcs[5]);
5441 if deliver_last_raa {
5442 commitment_signed_dance!(nodes[2], nodes[3], six_removes.commitment_signed, false);
5444 let _cs_last_raa = commitment_signed_dance!(nodes[2], nodes[3], six_removes.commitment_signed, false, true, false, true);
5447 // D's latest commitment transaction now contains 1st + 2nd + 9th HTLCs (implicitly, they're
5448 // below the dust limit) and the 5th + 6th + 11th HTLCs. It has failed back the 0th, 3rd, 4th,
5449 // 7th, 8th, and 10th, but as we haven't yet delivered the final RAA to C, the fails haven't
5450 // propagated back to A/B yet (and D has two unrevoked commitment transactions).
5452 // We now broadcast the latest commitment transaction, which *should* result in failures for
5453 // the 0th, 1st, 2nd, 3rd, 4th, 7th, 8th, 9th, and 10th HTLCs, ie all the below-dust HTLCs and
5454 // the non-broadcast above-dust HTLCs.
5456 // Alternatively, we may broadcast the previous commitment transaction, which should only
5457 // result in failures for the below-dust HTLCs, ie the 0th, 1st, 2nd, 3rd, 9th, and 10th HTLCs.
5458 let ds_last_commitment_tx = get_local_commitment_txn!(nodes[3], chan.2);
5460 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5461 if announce_latest {
5462 nodes[2].block_notifier.block_connected(&Block { header, txdata: vec![ds_last_commitment_tx[0].clone()]}, 1);
5464 nodes[2].block_notifier.block_connected(&Block { header, txdata: vec![ds_prev_commitment_tx[0].clone()]}, 1);
5466 connect_blocks(&nodes[2].block_notifier, ANTI_REORG_DELAY - 1, 1, true, header.bitcoin_hash());
5467 check_closed_broadcast!(nodes[2], false);
5468 expect_pending_htlcs_forwardable!(nodes[2]);
5469 check_added_monitors!(nodes[2], 3);
5471 let cs_msgs = nodes[2].node.get_and_clear_pending_msg_events();
5472 assert_eq!(cs_msgs.len(), 2);
5473 let mut a_done = false;
5474 for msg in cs_msgs {
5476 MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => {
5477 // Both under-dust HTLCs and the one above-dust HTLC that we had already failed
5478 // should be failed-backwards here.
5479 let target = if *node_id == nodes[0].node.get_our_node_id() {
5480 // If announce_latest, expect 0th, 1st, 4th, 8th, 10th HTLCs, else only 0th, 1st, 10th below-dust HTLCs
5481 for htlc in &updates.update_fail_htlcs {
5482 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 });
5484 assert_eq!(updates.update_fail_htlcs.len(), if announce_latest { 5 } else { 3 });
5489 // If announce_latest, expect 2nd, 3rd, 7th, 9th HTLCs, else only 2nd, 3rd, 9th below-dust HTLCs
5490 for htlc in &updates.update_fail_htlcs {
5491 assert!(htlc.htlc_id == 1 || htlc.htlc_id == 2 || htlc.htlc_id == 5 || if announce_latest { htlc.htlc_id == 4 } else { false });
5493 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
5494 assert_eq!(updates.update_fail_htlcs.len(), if announce_latest { 4 } else { 3 });
5497 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]);
5498 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[1]);
5499 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[2]);
5500 if announce_latest {
5501 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[3]);
5502 if *node_id == nodes[0].node.get_our_node_id() {
5503 target.node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[4]);
5506 commitment_signed_dance!(target, nodes[2], updates.commitment_signed, false, true);
5508 _ => panic!("Unexpected event"),
5512 let as_events = nodes[0].node.get_and_clear_pending_events();
5513 assert_eq!(as_events.len(), if announce_latest { 5 } else { 3 });
5514 let mut as_failds = HashSet::new();
5515 for event in as_events.iter() {
5516 if let &Event::PaymentFailed { ref payment_hash, ref rejected_by_dest, .. } = event {
5517 assert!(as_failds.insert(*payment_hash));
5518 if *payment_hash != payment_hash_2 {
5519 assert_eq!(*rejected_by_dest, deliver_last_raa);
5521 assert!(!rejected_by_dest);
5523 } else { panic!("Unexpected event"); }
5525 assert!(as_failds.contains(&payment_hash_1));
5526 assert!(as_failds.contains(&payment_hash_2));
5527 if announce_latest {
5528 assert!(as_failds.contains(&payment_hash_3));
5529 assert!(as_failds.contains(&payment_hash_5));
5531 assert!(as_failds.contains(&payment_hash_6));
5533 let bs_events = nodes[1].node.get_and_clear_pending_events();
5534 assert_eq!(bs_events.len(), if announce_latest { 4 } else { 3 });
5535 let mut bs_failds = HashSet::new();
5536 for event in bs_events.iter() {
5537 if let &Event::PaymentFailed { ref payment_hash, ref rejected_by_dest, .. } = event {
5538 assert!(bs_failds.insert(*payment_hash));
5539 if *payment_hash != payment_hash_1 && *payment_hash != payment_hash_5 {
5540 assert_eq!(*rejected_by_dest, deliver_last_raa);
5542 assert!(!rejected_by_dest);
5544 } else { panic!("Unexpected event"); }
5546 assert!(bs_failds.contains(&payment_hash_1));
5547 assert!(bs_failds.contains(&payment_hash_2));
5548 if announce_latest {
5549 assert!(bs_failds.contains(&payment_hash_4));
5551 assert!(bs_failds.contains(&payment_hash_5));
5553 // For each HTLC which was not failed-back by normal process (ie deliver_last_raa), we should
5554 // get a PaymentFailureNetworkUpdate. A should have gotten 4 HTLCs which were failed-back due
5555 // to unknown-preimage-etc, B should have gotten 2. Thus, in the
5556 // announce_latest && deliver_last_raa case, we should have 5-4=1 and 4-2=2
5557 // PaymentFailureNetworkUpdates.
5558 let as_msg_events = nodes[0].node.get_and_clear_pending_msg_events();
5559 assert_eq!(as_msg_events.len(), if deliver_last_raa { 1 } else if !announce_latest { 3 } else { 5 });
5560 let bs_msg_events = nodes[1].node.get_and_clear_pending_msg_events();
5561 assert_eq!(bs_msg_events.len(), if deliver_last_raa { 2 } else if !announce_latest { 3 } else { 4 });
5562 for event in as_msg_events.iter().chain(bs_msg_events.iter()) {
5564 &MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
5565 _ => panic!("Unexpected event"),
5571 fn test_fail_backwards_latest_remote_announce_a() {
5572 do_test_fail_backwards_unrevoked_remote_announce(false, true);
5576 fn test_fail_backwards_latest_remote_announce_b() {
5577 do_test_fail_backwards_unrevoked_remote_announce(true, true);
5581 fn test_fail_backwards_previous_remote_announce() {
5582 do_test_fail_backwards_unrevoked_remote_announce(false, false);
5583 // Note that true, true doesn't make sense as it implies we announce a revoked state, which is
5584 // tested for in test_commitment_revoked_fail_backward_exhaustive()
5588 fn test_dynamic_spendable_outputs_local_htlc_timeout_tx() {
5589 let chanmon_cfgs = create_chanmon_cfgs(2);
5590 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5591 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5592 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5594 // Create some initial channels
5595 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5597 let (_, our_payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000);
5598 let local_txn = get_local_commitment_txn!(nodes[0], chan_1.2);
5599 assert_eq!(local_txn[0].input.len(), 1);
5600 check_spends!(local_txn[0], chan_1.3);
5602 // Timeout HTLC on A's chain and so it can generate a HTLC-Timeout tx
5603 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5604 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![local_txn[0].clone()] }, 200);
5605 check_closed_broadcast!(nodes[0], false);
5606 check_added_monitors!(nodes[0], 1);
5608 let htlc_timeout = {
5609 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
5610 assert_eq!(node_txn[0].input.len(), 1);
5611 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
5612 check_spends!(node_txn[0], local_txn[0]);
5616 let header_201 = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5617 nodes[0].block_notifier.block_connected(&Block { header: header_201, txdata: vec![htlc_timeout.clone()] }, 201);
5618 connect_blocks(&nodes[0].block_notifier, ANTI_REORG_DELAY - 1, 201, true, header_201.bitcoin_hash());
5619 expect_payment_failed!(nodes[0], our_payment_hash, true);
5621 // Verify that A is able to spend its own HTLC-Timeout tx thanks to spendable output event given back by its ChannelMonitor
5622 let spend_txn = check_spendable_outputs!(nodes[0], 1, node_cfgs[0].keys_manager, 100000);
5623 assert_eq!(spend_txn.len(), 3);
5624 assert_eq!(spend_txn[0], spend_txn[1]);
5625 check_spends!(spend_txn[0], local_txn[0]);
5626 check_spends!(spend_txn[2], htlc_timeout);
5630 fn test_key_derivation_params() {
5631 // This test is a copy of test_dynamic_spendable_outputs_local_htlc_timeout_tx, with
5632 // a key manager rotation to test that key_derivation_params returned in DynamicOutputP2WSH
5633 // let us re-derive the channel key set to then derive a delayed_payment_key.
5635 let chanmon_cfgs = create_chanmon_cfgs(3);
5637 // We manually create the node configuration to backup the seed.
5638 let seed = [42; 32];
5639 let keys_manager = test_utils::TestKeysInterface::new(&seed, Network::Testnet);
5640 let chan_monitor = test_utils::TestChannelMonitor::new(&chanmon_cfgs[0].chain_monitor, &chanmon_cfgs[0].tx_broadcaster, &chanmon_cfgs[0].logger, &chanmon_cfgs[0].fee_estimator);
5641 let node = NodeCfg { chain_monitor: &chanmon_cfgs[0].chain_monitor, logger: &chanmon_cfgs[0].logger, tx_broadcaster: &chanmon_cfgs[0].tx_broadcaster, fee_estimator: &chanmon_cfgs[0].fee_estimator, chan_monitor, keys_manager, node_seed: seed };
5642 let mut node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
5643 node_cfgs.remove(0);
5644 node_cfgs.insert(0, node);
5646 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
5647 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
5649 // Create some initial channels
5650 // Create a dummy channel to advance index by one and thus test re-derivation correctness
5652 let chan_0 = create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known());
5653 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5654 assert_ne!(chan_0.3.output[0].script_pubkey, chan_1.3.output[0].script_pubkey);
5656 let (_, our_payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000);
5657 let local_txn_0 = get_local_commitment_txn!(nodes[0], chan_0.2);
5658 let local_txn_1 = get_local_commitment_txn!(nodes[0], chan_1.2);
5659 assert_eq!(local_txn_1[0].input.len(), 1);
5660 check_spends!(local_txn_1[0], chan_1.3);
5662 // We check funding pubkey are unique
5663 let (from_0_funding_key_0, from_0_funding_key_1) = (PublicKey::from_slice(&local_txn_0[0].input[0].witness[3][2..35]), PublicKey::from_slice(&local_txn_0[0].input[0].witness[3][36..69]));
5664 let (from_1_funding_key_0, from_1_funding_key_1) = (PublicKey::from_slice(&local_txn_1[0].input[0].witness[3][2..35]), PublicKey::from_slice(&local_txn_1[0].input[0].witness[3][36..69]));
5665 if from_0_funding_key_0 == from_1_funding_key_0
5666 || from_0_funding_key_0 == from_1_funding_key_1
5667 || from_0_funding_key_1 == from_1_funding_key_0
5668 || from_0_funding_key_1 == from_1_funding_key_1 {
5669 panic!("Funding pubkeys aren't unique");
5672 // Timeout HTLC on A's chain and so it can generate a HTLC-Timeout tx
5673 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5674 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![local_txn_1[0].clone()] }, 200);
5675 check_closed_broadcast!(nodes[0], false);
5676 check_added_monitors!(nodes[0], 1);
5678 let htlc_timeout = {
5679 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
5680 assert_eq!(node_txn[0].input.len(), 1);
5681 assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
5682 check_spends!(node_txn[0], local_txn_1[0]);
5686 let header_201 = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5687 nodes[0].block_notifier.block_connected(&Block { header: header_201, txdata: vec![htlc_timeout.clone()] }, 201);
5688 connect_blocks(&nodes[0].block_notifier, ANTI_REORG_DELAY - 1, 201, true, header_201.bitcoin_hash());
5689 expect_payment_failed!(nodes[0], our_payment_hash, true);
5691 // Verify that A is able to spend its own HTLC-Timeout tx thanks to spendable output event given back by its ChannelMonitor
5692 let new_keys_manager = test_utils::TestKeysInterface::new(&seed, Network::Testnet);
5693 let spend_txn = check_spendable_outputs!(nodes[0], 1, new_keys_manager, 100000);
5694 assert_eq!(spend_txn.len(), 3);
5695 assert_eq!(spend_txn[0], spend_txn[1]);
5696 check_spends!(spend_txn[0], local_txn_1[0]);
5697 check_spends!(spend_txn[2], htlc_timeout);
5701 fn test_static_output_closing_tx() {
5702 let chanmon_cfgs = create_chanmon_cfgs(2);
5703 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5704 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5705 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5707 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5709 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
5710 let closing_tx = close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true).2;
5712 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5713 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![closing_tx.clone()] }, 0);
5714 connect_blocks(&nodes[0].block_notifier, ANTI_REORG_DELAY - 1, 0, true, header.bitcoin_hash());
5716 let spend_txn = check_spendable_outputs!(nodes[0], 2, node_cfgs[0].keys_manager, 100000);
5717 assert_eq!(spend_txn.len(), 1);
5718 check_spends!(spend_txn[0], closing_tx);
5720 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![closing_tx.clone()] }, 0);
5721 connect_blocks(&nodes[1].block_notifier, ANTI_REORG_DELAY - 1, 0, true, header.bitcoin_hash());
5723 let spend_txn = check_spendable_outputs!(nodes[1], 2, node_cfgs[1].keys_manager, 100000);
5724 assert_eq!(spend_txn.len(), 1);
5725 check_spends!(spend_txn[0], closing_tx);
5728 fn do_htlc_claim_local_commitment_only(use_dust: bool) {
5729 let chanmon_cfgs = create_chanmon_cfgs(2);
5730 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5731 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5732 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5733 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5735 let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1]], if use_dust { 50000 } else { 3000000 });
5737 // Claim the payment, but don't deliver A's commitment_signed, resulting in the HTLC only being
5738 // present in B's local commitment transaction, but none of A's commitment transactions.
5739 assert!(nodes[1].node.claim_funds(our_payment_preimage, &None, if use_dust { 50_000 } else { 3_000_000 }));
5740 check_added_monitors!(nodes[1], 1);
5742 let bs_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
5743 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.update_fulfill_htlcs[0]);
5744 let events = nodes[0].node.get_and_clear_pending_events();
5745 assert_eq!(events.len(), 1);
5747 Event::PaymentSent { payment_preimage } => {
5748 assert_eq!(payment_preimage, our_payment_preimage);
5750 _ => panic!("Unexpected event"),
5753 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_updates.commitment_signed);
5754 check_added_monitors!(nodes[0], 1);
5755 let as_updates = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
5756 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_updates.0);
5757 check_added_monitors!(nodes[1], 1);
5759 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5760 for i in 1..TEST_FINAL_CLTV - CLTV_CLAIM_BUFFER + CHAN_CONFIRM_DEPTH + 1 {
5761 nodes[1].block_notifier.block_connected_checked(&header, i, &Vec::new(), &Vec::new());
5762 header.prev_blockhash = header.bitcoin_hash();
5764 test_txn_broadcast(&nodes[1], &chan, None, if use_dust { HTLCType::NONE } else { HTLCType::SUCCESS });
5765 check_closed_broadcast!(nodes[1], false);
5766 check_added_monitors!(nodes[1], 1);
5769 fn do_htlc_claim_current_remote_commitment_only(use_dust: bool) {
5770 let chanmon_cfgs = create_chanmon_cfgs(2);
5771 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
5772 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
5773 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
5774 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5775 let logger = test_utils::TestLogger::new();
5777 let (_, payment_hash) = get_payment_preimage_hash!(nodes[0]);
5778 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
5779 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &Vec::new(), if use_dust { 50000 } else { 3000000 }, TEST_FINAL_CLTV, &logger).unwrap();
5780 nodes[0].node.send_payment(&route, payment_hash, &None).unwrap();
5781 check_added_monitors!(nodes[0], 1);
5783 let _as_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
5785 // As far as A is concerned, the HTLC is now present only in the latest remote commitment
5786 // transaction, however it is not in A's latest local commitment, so we can just broadcast that
5787 // to "time out" the HTLC.
5789 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5791 for i in 1..TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + CHAN_CONFIRM_DEPTH + 1 {
5792 nodes[0].block_notifier.block_connected(&Block { header, txdata: Vec::new()}, i);
5793 header.prev_blockhash = header.bitcoin_hash();
5795 test_txn_broadcast(&nodes[0], &chan, None, HTLCType::NONE);
5796 check_closed_broadcast!(nodes[0], false);
5797 check_added_monitors!(nodes[0], 1);
5800 fn do_htlc_claim_previous_remote_commitment_only(use_dust: bool, check_revoke_no_close: bool) {
5801 let chanmon_cfgs = create_chanmon_cfgs(3);
5802 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
5803 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
5804 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
5805 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
5807 // Fail the payment, but don't deliver A's final RAA, resulting in the HTLC only being present
5808 // in B's previous (unrevoked) commitment transaction, but none of A's commitment transactions.
5809 // Also optionally test that we *don't* fail the channel in case the commitment transaction was
5810 // actually revoked.
5811 let htlc_value = if use_dust { 50000 } else { 3000000 };
5812 let (_, our_payment_hash) = route_payment(&nodes[0], &[&nodes[1]], htlc_value);
5813 assert!(nodes[1].node.fail_htlc_backwards(&our_payment_hash, &None));
5814 expect_pending_htlcs_forwardable!(nodes[1]);
5815 check_added_monitors!(nodes[1], 1);
5817 let bs_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
5818 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.update_fail_htlcs[0]);
5819 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_updates.commitment_signed);
5820 check_added_monitors!(nodes[0], 1);
5821 let as_updates = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
5822 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_updates.0);
5823 check_added_monitors!(nodes[1], 1);
5824 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_updates.1);
5825 check_added_monitors!(nodes[1], 1);
5826 let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
5828 if check_revoke_no_close {
5829 nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack);
5830 check_added_monitors!(nodes[0], 1);
5833 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5834 for i in 1..TEST_FINAL_CLTV + LATENCY_GRACE_PERIOD_BLOCKS + CHAN_CONFIRM_DEPTH + 1 {
5835 nodes[0].block_notifier.block_connected_checked(&header, i, &Vec::new(), &Vec::new());
5836 header.prev_blockhash = header.bitcoin_hash();
5838 if !check_revoke_no_close {
5839 test_txn_broadcast(&nodes[0], &chan, None, HTLCType::NONE);
5840 check_closed_broadcast!(nodes[0], false);
5841 check_added_monitors!(nodes[0], 1);
5843 expect_payment_failed!(nodes[0], our_payment_hash, true);
5847 // Test that we close channels on-chain when broadcastable HTLCs reach their timeout window.
5848 // There are only a few cases to test here:
5849 // * its not really normative behavior, but we test that below-dust HTLCs "included" in
5850 // broadcastable commitment transactions result in channel closure,
5851 // * its included in an unrevoked-but-previous remote commitment transaction,
5852 // * its included in the latest remote or local commitment transactions.
5853 // We test each of the three possible commitment transactions individually and use both dust and
5855 // Note that we don't bother testing both outbound and inbound HTLC failures for each case, and we
5856 // assume they are handled the same across all six cases, as both outbound and inbound failures are
5857 // tested for at least one of the cases in other tests.
5859 fn htlc_claim_single_commitment_only_a() {
5860 do_htlc_claim_local_commitment_only(true);
5861 do_htlc_claim_local_commitment_only(false);
5863 do_htlc_claim_current_remote_commitment_only(true);
5864 do_htlc_claim_current_remote_commitment_only(false);
5868 fn htlc_claim_single_commitment_only_b() {
5869 do_htlc_claim_previous_remote_commitment_only(true, false);
5870 do_htlc_claim_previous_remote_commitment_only(false, false);
5871 do_htlc_claim_previous_remote_commitment_only(true, true);
5872 do_htlc_claim_previous_remote_commitment_only(false, true);
5875 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>)
5876 where F1: for <'a> FnMut(&'a mut msgs::UpdateAddHTLC),
5879 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);
5883 // 0: node1 fails backward
5884 // 1: final node fails backward
5885 // 2: payment completed but the user rejects the payment
5886 // 3: final node fails backward (but tamper onion payloads from node0)
5887 // 100: trigger error in the intermediate node and tamper returning fail_htlc
5888 // 200: trigger error in the final node and tamper returning fail_htlc
5889 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>)
5890 where F1: for <'a> FnMut(&'a mut msgs::UpdateAddHTLC),
5891 F2: for <'a> FnMut(&'a mut msgs::UpdateFailHTLC),
5895 // reset block height
5896 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
5897 for ix in 0..nodes.len() {
5898 nodes[ix].block_notifier.block_connected_checked(&header, 1, &[], &[]);
5901 macro_rules! expect_event {
5902 ($node: expr, $event_type: path) => {{
5903 let events = $node.node.get_and_clear_pending_events();
5904 assert_eq!(events.len(), 1);
5906 $event_type { .. } => {},
5907 _ => panic!("Unexpected event"),
5912 macro_rules! expect_htlc_forward {
5914 expect_event!($node, Event::PendingHTLCsForwardable);
5915 $node.node.process_pending_htlc_forwards();
5919 // 0 ~~> 2 send payment
5920 nodes[0].node.send_payment(&route, payment_hash.clone(), &None).unwrap();
5921 check_added_monitors!(nodes[0], 1);
5922 let update_0 = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
5923 // temper update_add (0 => 1)
5924 let mut update_add_0 = update_0.update_add_htlcs[0].clone();
5925 if test_case == 0 || test_case == 3 || test_case == 100 {
5926 callback_msg(&mut update_add_0);
5929 // 0 => 1 update_add & CS
5930 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &update_add_0);
5931 commitment_signed_dance!(nodes[1], nodes[0], &update_0.commitment_signed, false, true);
5933 let update_1_0 = match test_case {
5934 0|100 => { // intermediate node failure; fail backward to 0
5935 let update_1_0 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
5936 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));
5939 1|2|3|200 => { // final node failure; forwarding to 2
5940 assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
5942 if test_case != 200 {
5945 expect_htlc_forward!(&nodes[1]);
5947 let update_1 = get_htlc_update_msgs!(nodes[1], nodes[2].node.get_our_node_id());
5948 check_added_monitors!(&nodes[1], 1);
5949 assert_eq!(update_1.update_add_htlcs.len(), 1);
5950 // tamper update_add (1 => 2)
5951 let mut update_add_1 = update_1.update_add_htlcs[0].clone();
5952 if test_case != 3 && test_case != 200 {
5953 callback_msg(&mut update_add_1);
5957 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &update_add_1);
5958 commitment_signed_dance!(nodes[2], nodes[1], update_1.commitment_signed, false, true);
5960 if test_case == 2 || test_case == 200 {
5961 expect_htlc_forward!(&nodes[2]);
5962 expect_event!(&nodes[2], Event::PaymentReceived);
5964 expect_pending_htlcs_forwardable!(nodes[2]);
5967 let update_2_1 = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
5968 if test_case == 2 || test_case == 200 {
5969 check_added_monitors!(&nodes[2], 1);
5971 assert!(update_2_1.update_fail_htlcs.len() == 1);
5973 let mut fail_msg = update_2_1.update_fail_htlcs[0].clone();
5974 if test_case == 200 {
5975 callback_fail(&mut fail_msg);
5979 nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &fail_msg);
5980 commitment_signed_dance!(nodes[1], nodes[2], update_2_1.commitment_signed, true);
5982 // backward fail on 1
5983 let update_1_0 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
5984 assert!(update_1_0.update_fail_htlcs.len() == 1);
5987 _ => unreachable!(),
5990 // 1 => 0 commitment_signed_dance
5991 if update_1_0.update_fail_htlcs.len() > 0 {
5992 let mut fail_msg = update_1_0.update_fail_htlcs[0].clone();
5993 if test_case == 100 {
5994 callback_fail(&mut fail_msg);
5996 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &fail_msg);
5998 nodes[0].node.handle_update_fail_malformed_htlc(&nodes[1].node.get_our_node_id(), &update_1_0.update_fail_malformed_htlcs[0]);
6001 commitment_signed_dance!(nodes[0], nodes[1], update_1_0.commitment_signed, false, true);
6003 let events = nodes[0].node.get_and_clear_pending_events();
6004 assert_eq!(events.len(), 1);
6005 if let &Event::PaymentFailed { payment_hash:_, ref rejected_by_dest, ref error_code, error_data: _ } = &events[0] {
6006 assert_eq!(*rejected_by_dest, !expected_retryable);
6007 assert_eq!(*error_code, expected_error_code);
6009 panic!("Uexpected event");
6012 let events = nodes[0].node.get_and_clear_pending_msg_events();
6013 if expected_channel_update.is_some() {
6014 assert_eq!(events.len(), 1);
6016 MessageSendEvent::PaymentFailureNetworkUpdate { ref update } => {
6018 &HTLCFailChannelUpdate::ChannelUpdateMessage { .. } => {
6019 if let HTLCFailChannelUpdate::ChannelUpdateMessage { .. } = expected_channel_update.unwrap() {} else {
6020 panic!("channel_update not found!");
6023 &HTLCFailChannelUpdate::ChannelClosed { ref short_channel_id, ref is_permanent } => {
6024 if let HTLCFailChannelUpdate::ChannelClosed { short_channel_id: ref expected_short_channel_id, is_permanent: ref expected_is_permanent } = expected_channel_update.unwrap() {
6025 assert!(*short_channel_id == *expected_short_channel_id);
6026 assert!(*is_permanent == *expected_is_permanent);
6028 panic!("Unexpected message event");
6031 &HTLCFailChannelUpdate::NodeFailure { ref node_id, ref is_permanent } => {
6032 if let HTLCFailChannelUpdate::NodeFailure { node_id: ref expected_node_id, is_permanent: ref expected_is_permanent } = expected_channel_update.unwrap() {
6033 assert!(*node_id == *expected_node_id);
6034 assert!(*is_permanent == *expected_is_permanent);
6036 panic!("Unexpected message event");
6041 _ => panic!("Unexpected message event"),
6044 assert_eq!(events.len(), 0);
6048 impl msgs::ChannelUpdate {
6049 fn dummy() -> msgs::ChannelUpdate {
6050 use bitcoin::secp256k1::ffi::Signature as FFISignature;
6051 use bitcoin::secp256k1::Signature;
6052 msgs::ChannelUpdate {
6053 signature: Signature::from(FFISignature::new()),
6054 contents: msgs::UnsignedChannelUpdate {
6055 chain_hash: BlockHash::hash(&vec![0u8][..]),
6056 short_channel_id: 0,
6059 cltv_expiry_delta: 0,
6060 htlc_minimum_msat: 0,
6061 htlc_maximum_msat: OptionalField::Absent,
6063 fee_proportional_millionths: 0,
6064 excess_data: vec![],
6070 struct BogusOnionHopData {
6073 impl BogusOnionHopData {
6074 fn new(orig: msgs::OnionHopData) -> Self {
6075 Self { data: orig.encode() }
6078 impl Writeable for BogusOnionHopData {
6079 fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
6080 writer.write_all(&self.data[..])
6085 fn test_onion_failure() {
6086 use ln::msgs::ChannelUpdate;
6087 use ln::channelmanager::CLTV_FAR_FAR_AWAY;
6088 use bitcoin::secp256k1;
6090 const BADONION: u16 = 0x8000;
6091 const PERM: u16 = 0x4000;
6092 const NODE: u16 = 0x2000;
6093 const UPDATE: u16 = 0x1000;
6095 let chanmon_cfgs = create_chanmon_cfgs(3);
6096 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
6097 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
6098 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
6099 for node in nodes.iter() {
6100 *node.keys_manager.override_session_priv.lock().unwrap() = Some(SecretKey::from_slice(&[3; 32]).unwrap());
6102 let channels = [create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()), create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known())];
6103 let (_, payment_hash) = get_payment_preimage_hash!(nodes[0]);
6104 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6105 let logger = test_utils::TestLogger::new();
6106 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, &Vec::new(), 40000, TEST_FINAL_CLTV, &logger).unwrap();
6108 send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 40000, 40_000);
6110 // intermediate node failure
6111 run_onion_failure_test("invalid_realm", 0, &nodes, &route, &payment_hash, |msg| {
6112 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
6113 let cur_height = nodes[0].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
6114 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
6115 let (mut onion_payloads, _htlc_msat, _htlc_cltv) = onion_utils::build_onion_payloads(&route.paths[0], 40000, &None, cur_height).unwrap();
6116 let mut new_payloads = Vec::new();
6117 for payload in onion_payloads.drain(..) {
6118 new_payloads.push(BogusOnionHopData::new(payload));
6120 // break the first (non-final) hop payload by swapping the realm (0) byte for a byte
6121 // describing a length-1 TLV payload, which is obviously bogus.
6122 new_payloads[0].data[0] = 1;
6123 msg.onion_routing_packet = onion_utils::construct_onion_packet_bogus_hopdata(new_payloads, onion_keys, [0; 32], &payment_hash);
6124 }, ||{}, true, Some(PERM|22), Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: channels[1].0.contents.short_channel_id, is_permanent: true}));//XXX incremented channels idx here
6126 // final node failure
6127 run_onion_failure_test("invalid_realm", 3, &nodes, &route, &payment_hash, |msg| {
6128 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
6129 let cur_height = nodes[0].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
6130 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
6131 let (mut onion_payloads, _htlc_msat, _htlc_cltv) = onion_utils::build_onion_payloads(&route.paths[0], 40000, &None, cur_height).unwrap();
6132 let mut new_payloads = Vec::new();
6133 for payload in onion_payloads.drain(..) {
6134 new_payloads.push(BogusOnionHopData::new(payload));
6136 // break the last-hop payload by swapping the realm (0) byte for a byte describing a
6137 // length-1 TLV payload, which is obviously bogus.
6138 new_payloads[1].data[0] = 1;
6139 msg.onion_routing_packet = onion_utils::construct_onion_packet_bogus_hopdata(new_payloads, onion_keys, [0; 32], &payment_hash);
6140 }, ||{}, false, Some(PERM|22), Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: channels[1].0.contents.short_channel_id, is_permanent: true}));
6142 // the following three with run_onion_failure_test_with_fail_intercept() test only the origin node
6143 // receiving simulated fail messages
6144 // intermediate node failure
6145 run_onion_failure_test_with_fail_intercept("temporary_node_failure", 100, &nodes, &route, &payment_hash, |msg| {
6147 msg.amount_msat -= 1;
6149 // and tamper returning error message
6150 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
6151 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
6152 msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], NODE|2, &[0;0]);
6153 }, ||{}, true, Some(NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.paths[0][0].pubkey, is_permanent: false}));
6155 // final node failure
6156 run_onion_failure_test_with_fail_intercept("temporary_node_failure", 200, &nodes, &route, &payment_hash, |_msg| {}, |msg| {
6157 // and tamper returning error message
6158 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
6159 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
6160 msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[1].shared_secret[..], NODE|2, &[0;0]);
6162 nodes[2].node.fail_htlc_backwards(&payment_hash, &None);
6163 }, true, Some(NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.paths[0][1].pubkey, is_permanent: false}));
6165 // intermediate node failure
6166 run_onion_failure_test_with_fail_intercept("permanent_node_failure", 100, &nodes, &route, &payment_hash, |msg| {
6167 msg.amount_msat -= 1;
6169 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
6170 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
6171 msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], PERM|NODE|2, &[0;0]);
6172 }, ||{}, true, Some(PERM|NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.paths[0][0].pubkey, is_permanent: true}));
6174 // final node failure
6175 run_onion_failure_test_with_fail_intercept("permanent_node_failure", 200, &nodes, &route, &payment_hash, |_msg| {}, |msg| {
6176 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
6177 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
6178 msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[1].shared_secret[..], PERM|NODE|2, &[0;0]);
6180 nodes[2].node.fail_htlc_backwards(&payment_hash, &None);
6181 }, false, Some(PERM|NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.paths[0][1].pubkey, is_permanent: true}));
6183 // intermediate node failure
6184 run_onion_failure_test_with_fail_intercept("required_node_feature_missing", 100, &nodes, &route, &payment_hash, |msg| {
6185 msg.amount_msat -= 1;
6187 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
6188 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
6189 msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], PERM|NODE|3, &[0;0]);
6191 nodes[2].node.fail_htlc_backwards(&payment_hash, &None);
6192 }, true, Some(PERM|NODE|3), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.paths[0][0].pubkey, is_permanent: true}));
6194 // final node failure
6195 run_onion_failure_test_with_fail_intercept("required_node_feature_missing", 200, &nodes, &route, &payment_hash, |_msg| {}, |msg| {
6196 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
6197 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
6198 msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[1].shared_secret[..], PERM|NODE|3, &[0;0]);
6200 nodes[2].node.fail_htlc_backwards(&payment_hash, &None);
6201 }, false, Some(PERM|NODE|3), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.paths[0][1].pubkey, is_permanent: true}));
6203 run_onion_failure_test("invalid_onion_version", 0, &nodes, &route, &payment_hash, |msg| { msg.onion_routing_packet.version = 1; }, ||{}, true,
6204 Some(BADONION|PERM|4), None);
6206 run_onion_failure_test("invalid_onion_hmac", 0, &nodes, &route, &payment_hash, |msg| { msg.onion_routing_packet.hmac = [3; 32]; }, ||{}, true,
6207 Some(BADONION|PERM|5), None);
6209 run_onion_failure_test("invalid_onion_key", 0, &nodes, &route, &payment_hash, |msg| { msg.onion_routing_packet.public_key = Err(secp256k1::Error::InvalidPublicKey);}, ||{}, true,
6210 Some(BADONION|PERM|6), None);
6212 run_onion_failure_test_with_fail_intercept("temporary_channel_failure", 100, &nodes, &route, &payment_hash, |msg| {
6213 msg.amount_msat -= 1;
6215 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
6216 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
6217 msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], UPDATE|7, &ChannelUpdate::dummy().encode_with_len()[..]);
6218 }, ||{}, true, Some(UPDATE|7), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()}));
6220 run_onion_failure_test_with_fail_intercept("permanent_channel_failure", 100, &nodes, &route, &payment_hash, |msg| {
6221 msg.amount_msat -= 1;
6223 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
6224 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
6225 msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], PERM|8, &[0;0]);
6226 // short_channel_id from the processing node
6227 }, ||{}, true, Some(PERM|8), Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: channels[1].0.contents.short_channel_id, is_permanent: true}));
6229 run_onion_failure_test_with_fail_intercept("required_channel_feature_missing", 100, &nodes, &route, &payment_hash, |msg| {
6230 msg.amount_msat -= 1;
6232 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
6233 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
6234 msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], PERM|9, &[0;0]);
6235 // short_channel_id from the processing node
6236 }, ||{}, true, Some(PERM|9), Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: channels[1].0.contents.short_channel_id, is_permanent: true}));
6238 let mut bogus_route = route.clone();
6239 bogus_route.paths[0][1].short_channel_id -= 1;
6240 run_onion_failure_test("unknown_next_peer", 0, &nodes, &bogus_route, &payment_hash, |_| {}, ||{}, true, Some(PERM|10),
6241 Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: bogus_route.paths[0][1].short_channel_id, is_permanent:true}));
6243 let amt_to_forward = nodes[1].node.channel_state.lock().unwrap().by_id.get(&channels[1].2).unwrap().get_their_htlc_minimum_msat() - 1;
6244 let mut bogus_route = route.clone();
6245 let route_len = bogus_route.paths[0].len();
6246 bogus_route.paths[0][route_len-1].fee_msat = amt_to_forward;
6247 run_onion_failure_test("amount_below_minimum", 0, &nodes, &bogus_route, &payment_hash, |_| {}, ||{}, true, Some(UPDATE|11), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()}));
6249 //TODO: with new config API, we will be able to generate both valid and
6250 //invalid channel_update cases.
6251 run_onion_failure_test("fee_insufficient", 0, &nodes, &route, &payment_hash, |msg| {
6252 msg.amount_msat -= 1;
6253 }, || {}, true, Some(UPDATE|12), Some(msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id: channels[0].0.contents.short_channel_id, is_permanent: true}));
6255 run_onion_failure_test("incorrect_cltv_expiry", 0, &nodes, &route, &payment_hash, |msg| {
6256 // need to violate: cltv_expiry - cltv_expiry_delta >= outgoing_cltv_value
6257 msg.cltv_expiry -= 1;
6258 }, || {}, true, Some(UPDATE|13), Some(msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id: channels[0].0.contents.short_channel_id, is_permanent: true}));
6260 run_onion_failure_test("expiry_too_soon", 0, &nodes, &route, &payment_hash, |msg| {
6261 let height = msg.cltv_expiry - CLTV_CLAIM_BUFFER - LATENCY_GRACE_PERIOD_BLOCKS + 1;
6262 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
6264 nodes[1].block_notifier.block_connected_checked(&header, height, &[], &[]);
6265 }, ||{}, true, Some(UPDATE|14), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()}));
6267 run_onion_failure_test("unknown_payment_hash", 2, &nodes, &route, &payment_hash, |_| {}, || {
6268 nodes[2].node.fail_htlc_backwards(&payment_hash, &None);
6269 }, false, Some(PERM|15), None);
6271 run_onion_failure_test("final_expiry_too_soon", 1, &nodes, &route, &payment_hash, |msg| {
6272 let height = msg.cltv_expiry - CLTV_CLAIM_BUFFER - LATENCY_GRACE_PERIOD_BLOCKS + 1;
6273 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
6275 nodes[2].block_notifier.block_connected_checked(&header, height, &[], &[]);
6276 }, || {}, true, Some(17), None);
6278 run_onion_failure_test("final_incorrect_cltv_expiry", 1, &nodes, &route, &payment_hash, |_| {}, || {
6279 for (_, pending_forwards) in nodes[1].node.channel_state.lock().unwrap().forward_htlcs.iter_mut() {
6280 for f in pending_forwards.iter_mut() {
6282 &mut HTLCForwardInfo::AddHTLC { ref mut forward_info, .. } =>
6283 forward_info.outgoing_cltv_value += 1,
6288 }, true, Some(18), None);
6290 run_onion_failure_test("final_incorrect_htlc_amount", 1, &nodes, &route, &payment_hash, |_| {}, || {
6291 // violate amt_to_forward > msg.amount_msat
6292 for (_, pending_forwards) in nodes[1].node.channel_state.lock().unwrap().forward_htlcs.iter_mut() {
6293 for f in pending_forwards.iter_mut() {
6295 &mut HTLCForwardInfo::AddHTLC { ref mut forward_info, .. } =>
6296 forward_info.amt_to_forward -= 1,
6301 }, true, Some(19), None);
6303 run_onion_failure_test("channel_disabled", 0, &nodes, &route, &payment_hash, |_| {}, || {
6304 // disconnect event to the channel between nodes[1] ~ nodes[2]
6305 nodes[1].node.peer_disconnected(&nodes[2].node.get_our_node_id(), false);
6306 nodes[2].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
6307 }, true, Some(UPDATE|20), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()}));
6308 reconnect_nodes(&nodes[1], &nodes[2], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
6310 run_onion_failure_test("expiry_too_far", 0, &nodes, &route, &payment_hash, |msg| {
6311 let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
6312 let mut route = route.clone();
6314 route.paths[0][1].cltv_expiry_delta += CLTV_FAR_FAR_AWAY + route.paths[0][0].cltv_expiry_delta + 1;
6315 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
6316 let (onion_payloads, _, htlc_cltv) = onion_utils::build_onion_payloads(&route.paths[0], 40000, &None, height).unwrap();
6317 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &payment_hash);
6318 msg.cltv_expiry = htlc_cltv;
6319 msg.onion_routing_packet = onion_packet;
6320 }, ||{}, true, Some(21), None);
6325 fn bolt2_open_channel_sending_node_checks_part1() { //This test needs to be on its own as we are catching a panic
6326 let chanmon_cfgs = create_chanmon_cfgs(2);
6327 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6328 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6329 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6330 //Force duplicate channel ids
6331 for node in nodes.iter() {
6332 *node.keys_manager.override_channel_id_priv.lock().unwrap() = Some([0; 32]);
6335 // BOLT #2 spec: Sending node must ensure temporary_channel_id is unique from any other channel ID with the same peer.
6336 let channel_value_satoshis=10000;
6337 let push_msat=10001;
6338 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).unwrap();
6339 let node0_to_1_send_open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
6340 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &node0_to_1_send_open_channel);
6342 //Create a second channel with a channel_id collision
6343 assert!(nodes[0].node.create_channel(nodes[0].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).is_err());
6347 fn bolt2_open_channel_sending_node_checks_part2() {
6348 let chanmon_cfgs = create_chanmon_cfgs(2);
6349 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6350 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6351 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6353 // BOLT #2 spec: Sending node must set funding_satoshis to less than 2^24 satoshis
6354 let channel_value_satoshis=2^24;
6355 let push_msat=10001;
6356 assert!(nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).is_err());
6358 // BOLT #2 spec: Sending node must set push_msat to equal or less than 1000 * funding_satoshis
6359 let channel_value_satoshis=10000;
6360 // Test when push_msat is equal to 1000 * funding_satoshis.
6361 let push_msat=1000*channel_value_satoshis+1;
6362 assert!(nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).is_err());
6364 // BOLT #2 spec: Sending node must set set channel_reserve_satoshis greater than or equal to dust_limit_satoshis
6365 let channel_value_satoshis=10000;
6366 let push_msat=10001;
6367 assert!(nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), channel_value_satoshis, push_msat, 42, None).is_ok()); //Create a valid channel
6368 let node0_to_1_send_open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
6369 assert!(node0_to_1_send_open_channel.channel_reserve_satoshis>=node0_to_1_send_open_channel.dust_limit_satoshis);
6371 // BOLT #2 spec: Sending node must set undefined bits in channel_flags to 0
6372 // 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
6373 assert!(node0_to_1_send_open_channel.channel_flags<=1);
6375 // 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.
6376 assert!(BREAKDOWN_TIMEOUT>0);
6377 assert!(node0_to_1_send_open_channel.to_self_delay==BREAKDOWN_TIMEOUT);
6379 // BOLT #2 spec: Sending node must ensure the chain_hash value identifies the chain it wishes to open the channel within.
6380 let chain_hash=genesis_block(Network::Testnet).header.bitcoin_hash();
6381 assert_eq!(node0_to_1_send_open_channel.chain_hash,chain_hash);
6383 // 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.
6384 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.funding_pubkey.serialize()).is_ok());
6385 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.revocation_basepoint.serialize()).is_ok());
6386 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.htlc_basepoint.serialize()).is_ok());
6387 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.payment_point.serialize()).is_ok());
6388 assert!(PublicKey::from_slice(&node0_to_1_send_open_channel.delayed_payment_basepoint.serialize()).is_ok());
6391 // BOLT 2 Requirements for the Sender when constructing and sending an update_add_htlc message.
6392 // 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.
6393 //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.
6396 fn test_update_add_htlc_bolt2_sender_value_below_minimum_msat() {
6397 //BOLT2 Requirement: MUST NOT offer amount_msat below the receiving node's htlc_minimum_msat (same validation check catches both of these)
6398 let chanmon_cfgs = create_chanmon_cfgs(2);
6399 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6400 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6401 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6402 let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6404 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6405 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6406 let logger = test_utils::TestLogger::new();
6407 let mut route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
6408 route.paths[0][0].fee_msat = 100;
6410 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
6411 assert!(regex::Regex::new(r"Cannot send less than their minimum HTLC value \(\d+\)").unwrap().is_match(err)));
6412 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
6413 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot send less than their minimum HTLC value".to_string(), 1);
6417 fn test_update_add_htlc_bolt2_sender_zero_value_msat() {
6418 //BOLT2 Requirement: MUST offer amount_msat greater than 0.
6419 let chanmon_cfgs = create_chanmon_cfgs(2);
6420 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6421 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6422 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6423 let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6424 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6426 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6427 let logger = test_utils::TestLogger::new();
6428 let mut route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
6429 route.paths[0][0].fee_msat = 0;
6430 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
6431 assert_eq!(err, "Cannot send 0-msat HTLC"));
6433 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
6434 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot send 0-msat HTLC".to_string(), 1);
6438 fn test_update_add_htlc_bolt2_receiver_zero_value_msat() {
6439 //BOLT2 Requirement: MUST offer amount_msat greater than 0.
6440 let chanmon_cfgs = create_chanmon_cfgs(2);
6441 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6442 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6443 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6444 let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6446 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6447 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6448 let logger = test_utils::TestLogger::new();
6449 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
6450 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6451 check_added_monitors!(nodes[0], 1);
6452 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6453 updates.update_add_htlcs[0].amount_msat = 0;
6455 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6456 nodes[1].logger.assert_log("lightning::ln::channelmanager".to_string(), "Remote side tried to send a 0-msat HTLC".to_string(), 1);
6457 check_closed_broadcast!(nodes[1], true).unwrap();
6458 check_added_monitors!(nodes[1], 1);
6462 fn test_update_add_htlc_bolt2_sender_cltv_expiry_too_high() {
6463 //BOLT 2 Requirement: MUST set cltv_expiry less than 500000000.
6464 //It is enforced when constructing a route.
6465 let chanmon_cfgs = create_chanmon_cfgs(2);
6466 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6467 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6468 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6469 let _chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 0, InitFeatures::known(), InitFeatures::known());
6470 let logger = test_utils::TestLogger::new();
6472 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6474 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6475 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], 100000000, 500000001, &logger).unwrap();
6476 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::RouteError { ref err },
6477 assert_eq!(err, &"Channel CLTV overflowed?"));
6481 fn test_update_add_htlc_bolt2_sender_exceed_max_htlc_num_and_htlc_id_increment() {
6482 //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.
6483 //BOLT 2 Requirement: for the first HTLC it offers MUST set id to 0.
6484 //BOLT 2 Requirement: MUST increase the value of id by 1 for each successive offer.
6485 let chanmon_cfgs = create_chanmon_cfgs(2);
6486 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6487 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6488 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6489 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 0, InitFeatures::known(), InitFeatures::known());
6490 let max_accepted_htlcs = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().their_max_accepted_htlcs as u64;
6492 let logger = test_utils::TestLogger::new();
6493 for i in 0..max_accepted_htlcs {
6494 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6495 let payment_event = {
6496 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6497 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
6498 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6499 check_added_monitors!(nodes[0], 1);
6501 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
6502 assert_eq!(events.len(), 1);
6503 if let MessageSendEvent::UpdateHTLCs { node_id: _, updates: msgs::CommitmentUpdate{ update_add_htlcs: ref htlcs, .. }, } = events[0] {
6504 assert_eq!(htlcs[0].htlc_id, i);
6508 SendEvent::from_event(events.remove(0))
6510 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
6511 check_added_monitors!(nodes[1], 0);
6512 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
6514 expect_pending_htlcs_forwardable!(nodes[1]);
6515 expect_payment_received!(nodes[1], our_payment_hash, 100000);
6517 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6518 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6519 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
6520 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
6521 assert!(regex::Regex::new(r"Cannot push more than their max accepted HTLCs \(\d+\)").unwrap().is_match(err)));
6523 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
6524 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot push more than their max accepted HTLCs".to_string(), 1);
6528 fn test_update_add_htlc_bolt2_sender_exceed_max_htlc_value_in_flight() {
6529 //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.
6530 let chanmon_cfgs = create_chanmon_cfgs(2);
6531 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6532 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6533 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6534 let channel_value = 100000;
6535 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, channel_value, 0, InitFeatures::known(), InitFeatures::known());
6536 let max_in_flight = get_channel_value_stat!(nodes[0], chan.2).their_max_htlc_value_in_flight_msat;
6538 send_payment(&nodes[0], &vec!(&nodes[1])[..], max_in_flight, max_in_flight);
6540 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6541 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6542 let logger = test_utils::TestLogger::new();
6543 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], max_in_flight+1, TEST_FINAL_CLTV, &logger).unwrap();
6544 unwrap_send_err!(nodes[0].node.send_payment(&route, our_payment_hash, &None), true, APIError::ChannelUnavailable { ref err },
6545 assert!(regex::Regex::new(r"Cannot send value that would put us over the max HTLC value in flight our peer will accept \(\d+\)").unwrap().is_match(err)));
6547 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
6548 nodes[0].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "Cannot send value that would put us over the max HTLC value in flight our peer will accept".to_string(), 1);
6550 send_payment(&nodes[0], &[&nodes[1]], max_in_flight, max_in_flight);
6553 // BOLT 2 Requirements for the Receiver when handling an update_add_htlc message.
6555 fn test_update_add_htlc_bolt2_receiver_check_amount_received_more_than_min() {
6556 //BOLT2 Requirement: receiving an amount_msat equal to 0, OR less than its own htlc_minimum_msat -> SHOULD fail the channel.
6557 let chanmon_cfgs = create_chanmon_cfgs(2);
6558 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6559 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6560 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6561 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6562 let htlc_minimum_msat: u64;
6564 let chan_lock = nodes[0].node.channel_state.lock().unwrap();
6565 let channel = chan_lock.by_id.get(&chan.2).unwrap();
6566 htlc_minimum_msat = channel.get_our_htlc_minimum_msat();
6569 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6570 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6571 let logger = test_utils::TestLogger::new();
6572 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], htlc_minimum_msat, TEST_FINAL_CLTV, &logger).unwrap();
6573 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6574 check_added_monitors!(nodes[0], 1);
6575 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6576 updates.update_add_htlcs[0].amount_msat = htlc_minimum_msat-1;
6577 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6578 assert!(nodes[1].node.list_channels().is_empty());
6579 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6580 assert!(regex::Regex::new(r"Remote side tried to send less than our minimum HTLC value\. Lower limit: \(\d+\)\. Actual: \(\d+\)").unwrap().is_match(err_msg.data.as_str()));
6581 check_added_monitors!(nodes[1], 1);
6585 fn test_update_add_htlc_bolt2_receiver_sender_can_afford_amount_sent() {
6586 //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
6587 let chanmon_cfgs = create_chanmon_cfgs(2);
6588 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6589 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6590 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6591 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6592 let logger = test_utils::TestLogger::new();
6594 let chan_stat = get_channel_value_stat!(nodes[0], chan.2);
6595 let channel_reserve = chan_stat.channel_reserve_msat;
6596 let feerate = get_feerate!(nodes[0], chan.2);
6597 // The 2* and +1 are for the fee spike reserve.
6598 let commit_tx_fee_outbound = 2 * commit_tx_fee_msat(feerate, 1 + 1);
6600 let max_can_send = 5000000 - channel_reserve - commit_tx_fee_outbound;
6601 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6602 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6603 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], max_can_send, TEST_FINAL_CLTV, &logger).unwrap();
6604 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6605 check_added_monitors!(nodes[0], 1);
6606 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6608 // Even though channel-initiator senders are required to respect the fee_spike_reserve,
6609 // at this time channel-initiatee receivers are not required to enforce that senders
6610 // respect the fee_spike_reserve.
6611 updates.update_add_htlcs[0].amount_msat = max_can_send + commit_tx_fee_outbound + 1;
6612 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6614 assert!(nodes[1].node.list_channels().is_empty());
6615 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6616 assert_eq!(err_msg.data, "Remote HTLC add would put them under remote reserve value");
6617 check_added_monitors!(nodes[1], 1);
6621 fn test_update_add_htlc_bolt2_receiver_check_max_htlc_limit() {
6622 //BOLT 2 Requirement: if a sending node adds more than its max_accepted_htlcs HTLCs to its local commitment transaction: SHOULD fail the channel
6623 //BOLT 2 Requirement: MUST allow multiple HTLCs with the same payment_hash.
6624 let chanmon_cfgs = create_chanmon_cfgs(2);
6625 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6626 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6627 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6628 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6629 let logger = test_utils::TestLogger::new();
6631 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6632 let session_priv = SecretKey::from_slice(&[42; 32]).unwrap();
6634 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6635 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], 3999999, TEST_FINAL_CLTV, &logger).unwrap();
6637 let cur_height = nodes[0].node.latest_block_height.load(Ordering::Acquire) as u32 + 1;
6638 let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::signing_only(), &route.paths[0], &session_priv).unwrap();
6639 let (onion_payloads, _htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route.paths[0], 3999999, &None, cur_height).unwrap();
6640 let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &our_payment_hash);
6642 let mut msg = msgs::UpdateAddHTLC {
6646 payment_hash: our_payment_hash,
6647 cltv_expiry: htlc_cltv,
6648 onion_routing_packet: onion_packet.clone(),
6651 for i in 0..super::channel::OUR_MAX_HTLCS {
6652 msg.htlc_id = i as u64;
6653 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg);
6655 msg.htlc_id = (super::channel::OUR_MAX_HTLCS) as u64;
6656 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg);
6658 assert!(nodes[1].node.list_channels().is_empty());
6659 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6660 assert!(regex::Regex::new(r"Remote tried to push more than our max accepted HTLCs \(\d+\)").unwrap().is_match(err_msg.data.as_str()));
6661 check_added_monitors!(nodes[1], 1);
6665 fn test_update_add_htlc_bolt2_receiver_check_max_in_flight_msat() {
6666 //OR adds more than its max_htlc_value_in_flight_msat worth of offered HTLCs to its local commitment transaction: SHOULD fail the channel
6667 let chanmon_cfgs = create_chanmon_cfgs(2);
6668 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6669 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6670 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6671 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
6672 let logger = test_utils::TestLogger::new();
6674 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6675 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6676 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6677 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6678 check_added_monitors!(nodes[0], 1);
6679 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6680 updates.update_add_htlcs[0].amount_msat = get_channel_value_stat!(nodes[1], chan.2).their_max_htlc_value_in_flight_msat + 1;
6681 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6683 assert!(nodes[1].node.list_channels().is_empty());
6684 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6685 assert!(regex::Regex::new("Remote HTLC add would put them over our max HTLC value").unwrap().is_match(err_msg.data.as_str()));
6686 check_added_monitors!(nodes[1], 1);
6690 fn test_update_add_htlc_bolt2_receiver_check_cltv_expiry() {
6691 //BOLT2 Requirement: if sending node sets cltv_expiry to greater or equal to 500000000: SHOULD fail the channel.
6692 let chanmon_cfgs = create_chanmon_cfgs(2);
6693 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6694 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6695 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6696 let logger = test_utils::TestLogger::new();
6698 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 95000000, InitFeatures::known(), InitFeatures::known());
6699 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6700 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6701 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6702 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6703 check_added_monitors!(nodes[0], 1);
6704 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6705 updates.update_add_htlcs[0].cltv_expiry = 500000000;
6706 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6708 assert!(nodes[1].node.list_channels().is_empty());
6709 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6710 assert_eq!(err_msg.data,"Remote provided CLTV expiry in seconds instead of block height");
6711 check_added_monitors!(nodes[1], 1);
6715 fn test_update_add_htlc_bolt2_receiver_check_repeated_id_ignore() {
6716 //BOLT 2 requirement: if the sender did not previously acknowledge the commitment of that HTLC: MUST ignore a repeated id value after a reconnection.
6717 // We test this by first testing that that repeated HTLCs pass commitment signature checks
6718 // after disconnect and that non-sequential htlc_ids result in a channel failure.
6719 let chanmon_cfgs = create_chanmon_cfgs(2);
6720 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6721 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6722 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6723 let logger = test_utils::TestLogger::new();
6725 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6726 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6727 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6728 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6729 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6730 check_added_monitors!(nodes[0], 1);
6731 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6732 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6734 //Disconnect and Reconnect
6735 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
6736 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
6737 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
6738 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
6739 assert_eq!(reestablish_1.len(), 1);
6740 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
6741 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
6742 assert_eq!(reestablish_2.len(), 1);
6743 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
6744 handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
6745 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
6746 handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
6749 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6750 assert_eq!(updates.commitment_signed.htlc_signatures.len(), 1);
6751 nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &updates.commitment_signed);
6752 check_added_monitors!(nodes[1], 1);
6753 let _bs_responses = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id());
6755 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6757 assert!(nodes[1].node.list_channels().is_empty());
6758 let err_msg = check_closed_broadcast!(nodes[1], true).unwrap();
6759 assert!(regex::Regex::new(r"Remote skipped HTLC ID \(skipped ID: \d+\)").unwrap().is_match(err_msg.data.as_str()));
6760 check_added_monitors!(nodes[1], 1);
6764 fn test_update_fulfill_htlc_bolt2_update_fulfill_htlc_before_commitment() {
6765 //BOLT 2 Requirement: until the corresponding HTLC is irrevocably committed in both sides' commitment transactions: MUST NOT send an update_fulfill_htlc, update_fail_htlc, or update_fail_malformed_htlc.
6767 let chanmon_cfgs = create_chanmon_cfgs(2);
6768 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6769 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6770 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6771 let logger = test_utils::TestLogger::new();
6772 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6773 let (our_payment_preimage, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6774 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6775 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6776 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6778 check_added_monitors!(nodes[0], 1);
6779 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6780 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6782 let update_msg = msgs::UpdateFulfillHTLC{
6785 payment_preimage: our_payment_preimage,
6788 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_msg);
6790 assert!(nodes[0].node.list_channels().is_empty());
6791 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6792 assert!(regex::Regex::new(r"Remote tried to fulfill/fail HTLC \(\d+\) before it had been committed").unwrap().is_match(err_msg.data.as_str()));
6793 check_added_monitors!(nodes[0], 1);
6797 fn test_update_fulfill_htlc_bolt2_update_fail_htlc_before_commitment() {
6798 //BOLT 2 Requirement: until the corresponding HTLC is irrevocably committed in both sides' commitment transactions: MUST NOT send an update_fulfill_htlc, update_fail_htlc, or update_fail_malformed_htlc.
6800 let chanmon_cfgs = create_chanmon_cfgs(2);
6801 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6802 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6803 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6804 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6805 let logger = test_utils::TestLogger::new();
6807 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6808 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6809 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6810 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6811 check_added_monitors!(nodes[0], 1);
6812 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6813 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6815 let update_msg = msgs::UpdateFailHTLC{
6818 reason: msgs::OnionErrorPacket { data: Vec::new()},
6821 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_msg);
6823 assert!(nodes[0].node.list_channels().is_empty());
6824 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6825 assert!(regex::Regex::new(r"Remote tried to fulfill/fail HTLC \(\d+\) before it had been committed").unwrap().is_match(err_msg.data.as_str()));
6826 check_added_monitors!(nodes[0], 1);
6830 fn test_update_fulfill_htlc_bolt2_update_fail_malformed_htlc_before_commitment() {
6831 //BOLT 2 Requirement: until the corresponding HTLC is irrevocably committed in both sides' commitment transactions: MUST NOT send an update_fulfill_htlc, update_fail_htlc, or update_fail_malformed_htlc.
6833 let chanmon_cfgs = create_chanmon_cfgs(2);
6834 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6835 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6836 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6837 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6838 let logger = test_utils::TestLogger::new();
6840 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6841 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6842 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6843 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6844 check_added_monitors!(nodes[0], 1);
6845 let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6846 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6848 let update_msg = msgs::UpdateFailMalformedHTLC{
6851 sha256_of_onion: [1; 32],
6852 failure_code: 0x8000,
6855 nodes[0].node.handle_update_fail_malformed_htlc(&nodes[1].node.get_our_node_id(), &update_msg);
6857 assert!(nodes[0].node.list_channels().is_empty());
6858 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6859 assert!(regex::Regex::new(r"Remote tried to fulfill/fail HTLC \(\d+\) before it had been committed").unwrap().is_match(err_msg.data.as_str()));
6860 check_added_monitors!(nodes[0], 1);
6864 fn test_update_fulfill_htlc_bolt2_incorrect_htlc_id() {
6865 //BOLT 2 Requirement: A receiving node: if the id does not correspond to an HTLC in its current commitment transaction MUST fail the channel.
6867 let chanmon_cfgs = create_chanmon_cfgs(2);
6868 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6869 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6870 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6871 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6873 let our_payment_preimage = route_payment(&nodes[0], &[&nodes[1]], 100000).0;
6875 nodes[1].node.claim_funds(our_payment_preimage, &None, 100_000);
6876 check_added_monitors!(nodes[1], 1);
6878 let events = nodes[1].node.get_and_clear_pending_msg_events();
6879 assert_eq!(events.len(), 1);
6880 let mut update_fulfill_msg: msgs::UpdateFulfillHTLC = {
6882 MessageSendEvent::UpdateHTLCs { 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, .. } } => {
6883 assert!(update_add_htlcs.is_empty());
6884 assert_eq!(update_fulfill_htlcs.len(), 1);
6885 assert!(update_fail_htlcs.is_empty());
6886 assert!(update_fail_malformed_htlcs.is_empty());
6887 assert!(update_fee.is_none());
6888 update_fulfill_htlcs[0].clone()
6890 _ => panic!("Unexpected event"),
6894 update_fulfill_msg.htlc_id = 1;
6896 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_msg);
6898 assert!(nodes[0].node.list_channels().is_empty());
6899 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6900 assert_eq!(err_msg.data, "Remote tried to fulfill/fail an HTLC we couldn't find");
6901 check_added_monitors!(nodes[0], 1);
6905 fn test_update_fulfill_htlc_bolt2_wrong_preimage() {
6906 //BOLT 2 Requirement: A receiving node: if the payment_preimage value in update_fulfill_htlc doesn't SHA256 hash to the corresponding HTLC payment_hash MUST fail the channel.
6908 let chanmon_cfgs = create_chanmon_cfgs(2);
6909 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6910 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6911 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6912 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
6914 let our_payment_preimage = route_payment(&nodes[0], &[&nodes[1]], 100000).0;
6916 nodes[1].node.claim_funds(our_payment_preimage, &None, 100_000);
6917 check_added_monitors!(nodes[1], 1);
6919 let events = nodes[1].node.get_and_clear_pending_msg_events();
6920 assert_eq!(events.len(), 1);
6921 let mut update_fulfill_msg: msgs::UpdateFulfillHTLC = {
6923 MessageSendEvent::UpdateHTLCs { 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, .. } } => {
6924 assert!(update_add_htlcs.is_empty());
6925 assert_eq!(update_fulfill_htlcs.len(), 1);
6926 assert!(update_fail_htlcs.is_empty());
6927 assert!(update_fail_malformed_htlcs.is_empty());
6928 assert!(update_fee.is_none());
6929 update_fulfill_htlcs[0].clone()
6931 _ => panic!("Unexpected event"),
6935 update_fulfill_msg.payment_preimage = PaymentPreimage([1; 32]);
6937 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_msg);
6939 assert!(nodes[0].node.list_channels().is_empty());
6940 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6941 assert!(regex::Regex::new(r"Remote tried to fulfill HTLC \(\d+\) with an incorrect preimage").unwrap().is_match(err_msg.data.as_str()));
6942 check_added_monitors!(nodes[0], 1);
6946 fn test_update_fulfill_htlc_bolt2_missing_badonion_bit_for_malformed_htlc_message() {
6947 //BOLT 2 Requirement: A receiving node: if the BADONION bit in failure_code is not set for update_fail_malformed_htlc MUST fail the channel.
6949 let chanmon_cfgs = create_chanmon_cfgs(2);
6950 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
6951 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
6952 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
6953 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
6954 let logger = test_utils::TestLogger::new();
6956 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
6957 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
6958 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), None, &[], 1000000, TEST_FINAL_CLTV, &logger).unwrap();
6959 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
6960 check_added_monitors!(nodes[0], 1);
6962 let mut updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
6963 updates.update_add_htlcs[0].onion_routing_packet.version = 1; //Produce a malformed HTLC message
6965 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]);
6966 check_added_monitors!(nodes[1], 0);
6967 commitment_signed_dance!(nodes[1], nodes[0], updates.commitment_signed, false, true);
6969 let events = nodes[1].node.get_and_clear_pending_msg_events();
6971 let mut update_msg: msgs::UpdateFailMalformedHTLC = {
6973 MessageSendEvent::UpdateHTLCs { 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, .. } } => {
6974 assert!(update_add_htlcs.is_empty());
6975 assert!(update_fulfill_htlcs.is_empty());
6976 assert!(update_fail_htlcs.is_empty());
6977 assert_eq!(update_fail_malformed_htlcs.len(), 1);
6978 assert!(update_fee.is_none());
6979 update_fail_malformed_htlcs[0].clone()
6981 _ => panic!("Unexpected event"),
6984 update_msg.failure_code &= !0x8000;
6985 nodes[0].node.handle_update_fail_malformed_htlc(&nodes[1].node.get_our_node_id(), &update_msg);
6987 assert!(nodes[0].node.list_channels().is_empty());
6988 let err_msg = check_closed_broadcast!(nodes[0], true).unwrap();
6989 assert_eq!(err_msg.data, "Got update_fail_malformed_htlc with BADONION not set");
6990 check_added_monitors!(nodes[0], 1);
6994 fn test_update_fulfill_htlc_bolt2_after_malformed_htlc_message_must_forward_update_fail_htlc() {
6995 //BOLT 2 Requirement: a receiving node which has an outgoing HTLC canceled by update_fail_malformed_htlc:
6996 // * MUST return an error in the update_fail_htlc sent to the link which originally sent the HTLC, using the failure_code given and setting the data to sha256_of_onion.
6998 let chanmon_cfgs = create_chanmon_cfgs(3);
6999 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
7000 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
7001 let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
7002 create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
7003 create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
7004 let logger = test_utils::TestLogger::new();
7006 let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]);
7009 let mut payment_event = {
7010 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
7011 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, &Vec::new(), 100000, TEST_FINAL_CLTV, &logger).unwrap();
7012 nodes[0].node.send_payment(&route, our_payment_hash, &None).unwrap();
7013 check_added_monitors!(nodes[0], 1);
7014 let mut events = nodes[0].node.get_and_clear_pending_msg_events();
7015 assert_eq!(events.len(), 1);
7016 SendEvent::from_event(events.remove(0))
7018 nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
7019 check_added_monitors!(nodes[1], 0);
7020 commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
7021 expect_pending_htlcs_forwardable!(nodes[1]);
7022 let mut events_2 = nodes[1].node.get_and_clear_pending_msg_events();
7023 assert_eq!(events_2.len(), 1);
7024 check_added_monitors!(nodes[1], 1);
7025 payment_event = SendEvent::from_event(events_2.remove(0));
7026 assert_eq!(payment_event.msgs.len(), 1);
7029 payment_event.msgs[0].onion_routing_packet.version = 1; //Produce a malformed HTLC message
7030 nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]);
7031 check_added_monitors!(nodes[2], 0);
7032 commitment_signed_dance!(nodes[2], nodes[1], payment_event.commitment_msg, false, true);
7034 let events_3 = nodes[2].node.get_and_clear_pending_msg_events();
7035 assert_eq!(events_3.len(), 1);
7036 let update_msg : (msgs::UpdateFailMalformedHTLC, msgs::CommitmentSigned) = {
7038 MessageSendEvent::UpdateHTLCs { 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 } } => {
7039 assert!(update_add_htlcs.is_empty());
7040 assert!(update_fulfill_htlcs.is_empty());
7041 assert!(update_fail_htlcs.is_empty());
7042 assert_eq!(update_fail_malformed_htlcs.len(), 1);
7043 assert!(update_fee.is_none());
7044 (update_fail_malformed_htlcs[0].clone(), commitment_signed.clone())
7046 _ => panic!("Unexpected event"),
7050 nodes[1].node.handle_update_fail_malformed_htlc(&nodes[2].node.get_our_node_id(), &update_msg.0);
7052 check_added_monitors!(nodes[1], 0);
7053 commitment_signed_dance!(nodes[1], nodes[2], update_msg.1, false, true);
7054 expect_pending_htlcs_forwardable!(nodes[1]);
7055 let events_4 = nodes[1].node.get_and_clear_pending_msg_events();
7056 assert_eq!(events_4.len(), 1);
7058 //Confirm that handlinge the update_malformed_htlc message produces an update_fail_htlc message to be forwarded back along the route
7060 MessageSendEvent::UpdateHTLCs { 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, .. } } => {
7061 assert!(update_add_htlcs.is_empty());
7062 assert!(update_fulfill_htlcs.is_empty());
7063 assert_eq!(update_fail_htlcs.len(), 1);
7064 assert!(update_fail_malformed_htlcs.is_empty());
7065 assert!(update_fee.is_none());
7067 _ => panic!("Unexpected event"),
7070 check_added_monitors!(nodes[1], 1);
7073 fn do_test_failure_delay_dust_htlc_local_commitment(announce_latest: bool) {
7074 // Dust-HTLC failure updates must be delayed until failure-trigger tx (in this case local commitment) reach ANTI_REORG_DELAY
7075 // We can have at most two valid local commitment tx, so both cases must be covered, and both txs must be checked to get them all as
7076 // HTLC could have been removed from lastest local commitment tx but still valid until we get remote RAA
7078 let chanmon_cfgs = create_chanmon_cfgs(2);
7079 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7080 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7081 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7082 let chan =create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
7084 let bs_dust_limit = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().our_dust_limit_satoshis;
7086 // We route 2 dust-HTLCs between A and B
7087 let (_, payment_hash_1) = route_payment(&nodes[0], &[&nodes[1]], bs_dust_limit*1000);
7088 let (_, payment_hash_2) = route_payment(&nodes[0], &[&nodes[1]], bs_dust_limit*1000);
7089 route_payment(&nodes[0], &[&nodes[1]], 1000000);
7091 // Cache one local commitment tx as previous
7092 let as_prev_commitment_tx = get_local_commitment_txn!(nodes[0], chan.2);
7094 // Fail one HTLC to prune it in the will-be-latest-local commitment tx
7095 assert!(nodes[1].node.fail_htlc_backwards(&payment_hash_2, &None));
7096 check_added_monitors!(nodes[1], 0);
7097 expect_pending_htlcs_forwardable!(nodes[1]);
7098 check_added_monitors!(nodes[1], 1);
7100 let remove = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
7101 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &remove.update_fail_htlcs[0]);
7102 nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &remove.commitment_signed);
7103 check_added_monitors!(nodes[0], 1);
7105 // Cache one local commitment tx as lastest
7106 let as_last_commitment_tx = get_local_commitment_txn!(nodes[0], chan.2);
7108 let events = nodes[0].node.get_and_clear_pending_msg_events();
7110 MessageSendEvent::SendRevokeAndACK { node_id, .. } => {
7111 assert_eq!(node_id, nodes[1].node.get_our_node_id());
7113 _ => panic!("Unexpected event"),
7116 MessageSendEvent::UpdateHTLCs { node_id, .. } => {
7117 assert_eq!(node_id, nodes[1].node.get_our_node_id());
7119 _ => panic!("Unexpected event"),
7122 assert_ne!(as_prev_commitment_tx, as_last_commitment_tx);
7123 // Fail the 2 dust-HTLCs, move their failure in maturation buffer (htlc_updated_waiting_threshold_conf)
7124 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7126 if announce_latest {
7127 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![as_last_commitment_tx[0].clone()]}, 1);
7129 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![as_prev_commitment_tx[0].clone()]}, 1);
7132 check_closed_broadcast!(nodes[0], false);
7133 check_added_monitors!(nodes[0], 1);
7135 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7136 connect_blocks(&nodes[0].block_notifier, ANTI_REORG_DELAY - 1, 1, true, header.bitcoin_hash());
7137 let events = nodes[0].node.get_and_clear_pending_events();
7138 // Only 2 PaymentFailed events should show up, over-dust HTLC has to be failed by timeout tx
7139 assert_eq!(events.len(), 2);
7140 let mut first_failed = false;
7141 for event in events {
7143 Event::PaymentFailed { payment_hash, .. } => {
7144 if payment_hash == payment_hash_1 {
7145 assert!(!first_failed);
7146 first_failed = true;
7148 assert_eq!(payment_hash, payment_hash_2);
7151 _ => panic!("Unexpected event"),
7157 fn test_failure_delay_dust_htlc_local_commitment() {
7158 do_test_failure_delay_dust_htlc_local_commitment(true);
7159 do_test_failure_delay_dust_htlc_local_commitment(false);
7163 fn test_no_failure_dust_htlc_local_commitment() {
7164 // Transaction filters for failing back dust htlc based on local commitment txn infos has been
7165 // prone to error, we test here that a dummy transaction don't fail them.
7167 let chanmon_cfgs = create_chanmon_cfgs(2);
7168 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7169 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7170 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7171 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
7174 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
7176 let as_dust_limit = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().our_dust_limit_satoshis;
7177 let bs_dust_limit = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().our_dust_limit_satoshis;
7179 // We route 2 dust-HTLCs between A and B
7180 let (preimage_1, _) = route_payment(&nodes[0], &[&nodes[1]], bs_dust_limit*1000);
7181 let (preimage_2, _) = route_payment(&nodes[1], &[&nodes[0]], as_dust_limit*1000);
7183 // Build a dummy invalid transaction trying to spend a commitment tx
7185 previous_output: BitcoinOutPoint { txid: chan.3.txid(), vout: 0 },
7186 script_sig: Script::new(),
7188 witness: Vec::new(),
7192 script_pubkey: Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(),
7196 let dummy_tx = Transaction {
7203 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7204 nodes[0].chan_monitor.simple_monitor.block_connected(&header, 1, &[&dummy_tx], &[1;1]);
7205 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7206 assert_eq!(nodes[0].node.get_and_clear_pending_msg_events().len(), 0);
7207 // We broadcast a few more block to check everything is all right
7208 connect_blocks(&nodes[0].block_notifier, 20, 1, true, header.bitcoin_hash());
7209 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7210 assert_eq!(nodes[0].node.get_and_clear_pending_msg_events().len(), 0);
7212 claim_payment(&nodes[0], &vec!(&nodes[1])[..], preimage_1, bs_dust_limit*1000);
7213 claim_payment(&nodes[1], &vec!(&nodes[0])[..], preimage_2, as_dust_limit*1000);
7216 fn do_test_sweep_outbound_htlc_failure_update(revoked: bool, local: bool) {
7217 // Outbound HTLC-failure updates must be cancelled if we get a reorg before we reach ANTI_REORG_DELAY.
7218 // Broadcast of revoked remote commitment tx, trigger failure-update of dust/non-dust HTLCs
7219 // Broadcast of remote commitment tx, trigger failure-update of dust-HTLCs
7220 // Broadcast of timeout tx on remote commitment tx, trigger failure-udate of non-dust HTLCs
7221 // Broadcast of local commitment tx, trigger failure-update of dust-HTLCs
7222 // Broadcast of HTLC-timeout tx on local commitment tx, trigger failure-update of non-dust HTLCs
7224 let chanmon_cfgs = create_chanmon_cfgs(3);
7225 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
7226 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
7227 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
7228 let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
7230 let bs_dust_limit = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().our_dust_limit_satoshis;
7232 let (_payment_preimage_1, dust_hash) = route_payment(&nodes[0], &[&nodes[1]], bs_dust_limit*1000);
7233 let (_payment_preimage_2, non_dust_hash) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
7235 let as_commitment_tx = get_local_commitment_txn!(nodes[0], chan.2);
7236 let bs_commitment_tx = get_local_commitment_txn!(nodes[1], chan.2);
7238 // We revoked bs_commitment_tx
7240 let (payment_preimage_3, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000);
7241 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_3, 1_000_000);
7244 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7245 let mut timeout_tx = Vec::new();
7247 // We fail dust-HTLC 1 by broadcast of local commitment tx
7248 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![as_commitment_tx[0].clone()]}, 1);
7249 check_closed_broadcast!(nodes[0], false);
7250 check_added_monitors!(nodes[0], 1);
7251 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7252 timeout_tx.push(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap()[0].clone());
7253 let parent_hash = connect_blocks(&nodes[0].block_notifier, ANTI_REORG_DELAY - 1, 2, true, header.bitcoin_hash());
7254 expect_payment_failed!(nodes[0], dust_hash, true);
7255 assert_eq!(timeout_tx[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
7256 // We fail non-dust-HTLC 2 by broadcast of local HTLC-timeout tx on local commitment tx
7257 let header_2 = BlockHeader { version: 0x20000000, prev_blockhash: parent_hash, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7258 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7259 nodes[0].block_notifier.block_connected(&Block { header: header_2, txdata: vec![timeout_tx[0].clone()]}, 7);
7260 let header_3 = BlockHeader { version: 0x20000000, prev_blockhash: header_2.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7261 connect_blocks(&nodes[0].block_notifier, ANTI_REORG_DELAY - 1, 8, true, header_3.bitcoin_hash());
7262 expect_payment_failed!(nodes[0], non_dust_hash, true);
7264 // We fail dust-HTLC 1 by broadcast of remote commitment tx. If revoked, fail also non-dust HTLC
7265 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![bs_commitment_tx[0].clone()]}, 1);
7266 check_closed_broadcast!(nodes[0], false);
7267 check_added_monitors!(nodes[0], 1);
7268 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7269 timeout_tx.push(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap()[0].clone());
7270 let parent_hash = connect_blocks(&nodes[0].block_notifier, ANTI_REORG_DELAY - 1, 2, true, header.bitcoin_hash());
7271 let header_2 = BlockHeader { version: 0x20000000, prev_blockhash: parent_hash, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7273 expect_payment_failed!(nodes[0], dust_hash, true);
7274 assert_eq!(timeout_tx[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT);
7275 // We fail non-dust-HTLC 2 by broadcast of local timeout tx on remote commitment tx
7276 nodes[0].block_notifier.block_connected(&Block { header: header_2, txdata: vec![timeout_tx[0].clone()]}, 7);
7277 assert_eq!(nodes[0].node.get_and_clear_pending_events().len(), 0);
7278 let header_3 = BlockHeader { version: 0x20000000, prev_blockhash: header_2.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7279 connect_blocks(&nodes[0].block_notifier, ANTI_REORG_DELAY - 1, 8, true, header_3.bitcoin_hash());
7280 expect_payment_failed!(nodes[0], non_dust_hash, true);
7282 // If revoked, both dust & non-dust HTLCs should have been failed after ANTI_REORG_DELAY confs of revoked
7284 let events = nodes[0].node.get_and_clear_pending_events();
7285 assert_eq!(events.len(), 2);
7288 Event::PaymentFailed { payment_hash, .. } => {
7289 if payment_hash == dust_hash { first = true; }
7290 else { first = false; }
7292 _ => panic!("Unexpected event"),
7295 Event::PaymentFailed { payment_hash, .. } => {
7296 if first { assert_eq!(payment_hash, non_dust_hash); }
7297 else { assert_eq!(payment_hash, dust_hash); }
7299 _ => panic!("Unexpected event"),
7306 fn test_sweep_outbound_htlc_failure_update() {
7307 do_test_sweep_outbound_htlc_failure_update(false, true);
7308 do_test_sweep_outbound_htlc_failure_update(false, false);
7309 do_test_sweep_outbound_htlc_failure_update(true, false);
7313 fn test_upfront_shutdown_script() {
7314 // BOLT 2 : Option upfront shutdown script, if peer commit its closing_script at channel opening
7315 // enforce it at shutdown message
7317 let mut config = UserConfig::default();
7318 config.channel_options.announced_channel = true;
7319 config.peer_channel_config_limits.force_announced_channel_preference = false;
7320 config.channel_options.commit_upfront_shutdown_pubkey = false;
7321 let user_cfgs = [None, Some(config), None];
7322 let chanmon_cfgs = create_chanmon_cfgs(3);
7323 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
7324 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs);
7325 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
7327 // We test that in case of peer committing upfront to a script, if it changes at closing, we refuse to sign
7328 let flags = InitFeatures::known();
7329 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 1000000, 1000000, flags.clone(), flags.clone());
7330 nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7331 let mut node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[2].node.get_our_node_id());
7332 node_0_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
7333 // Test we enforce upfront_scriptpbukey if by providing a diffrent one at closing that we disconnect peer
7334 nodes[2].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
7335 assert!(regex::Regex::new(r"Got shutdown request with a scriptpubkey \([A-Fa-f0-9]+\) which did not match their previous scriptpubkey.").unwrap().is_match(check_closed_broadcast!(nodes[2], true).unwrap().data.as_str()));
7336 check_added_monitors!(nodes[2], 1);
7338 // We test that in case of peer committing upfront to a script, if it doesn't change at closing, we sign
7339 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 1000000, 1000000, flags.clone(), flags.clone());
7340 nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7341 let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[2].node.get_our_node_id());
7342 // We test that in case of peer committing upfront to a script, if it oesn't change at closing, we sign
7343 nodes[2].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown);
7344 let events = nodes[2].node.get_and_clear_pending_msg_events();
7345 assert_eq!(events.len(), 1);
7347 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[0].node.get_our_node_id()) }
7348 _ => panic!("Unexpected event"),
7351 // We test that if case of peer non-signaling we don't enforce committed script at channel opening
7352 let flags_no = InitFeatures::known().clear_upfront_shutdown_script();
7353 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, flags_no, flags.clone());
7354 nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7355 let mut node_1_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
7356 node_1_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
7357 nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_1_shutdown);
7358 let events = nodes[1].node.get_and_clear_pending_msg_events();
7359 assert_eq!(events.len(), 1);
7361 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[0].node.get_our_node_id()) }
7362 _ => panic!("Unexpected event"),
7365 // We test that if user opt-out, we provide a zero-length script at channel opening and we are able to close
7366 // channel smoothly, opt-out is from channel initiator here
7367 let chan = create_announced_chan_between_nodes_with_value(&nodes, 1, 0, 1000000, 1000000, flags.clone(), flags.clone());
7368 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7369 let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
7370 node_0_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
7371 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_0_shutdown);
7372 let events = nodes[0].node.get_and_clear_pending_msg_events();
7373 assert_eq!(events.len(), 1);
7375 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
7376 _ => panic!("Unexpected event"),
7379 //// We test that if user opt-out, we provide a zero-length script at channel opening and we are able to close
7380 //// channel smoothly
7381 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, flags.clone(), flags.clone());
7382 nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
7383 let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
7384 node_0_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh();
7385 nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_0_shutdown);
7386 let events = nodes[0].node.get_and_clear_pending_msg_events();
7387 assert_eq!(events.len(), 2);
7389 MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
7390 _ => panic!("Unexpected event"),
7393 MessageSendEvent::SendClosingSigned { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) }
7394 _ => panic!("Unexpected event"),
7399 fn test_user_configurable_csv_delay() {
7400 // We test our channel constructors yield errors when we pass them absurd csv delay
7402 let mut low_our_to_self_config = UserConfig::default();
7403 low_our_to_self_config.own_channel_config.our_to_self_delay = 6;
7404 let mut high_their_to_self_config = UserConfig::default();
7405 high_their_to_self_config.peer_channel_config_limits.their_to_self_delay = 100;
7406 let user_cfgs = [Some(high_their_to_self_config.clone()), None];
7407 let chanmon_cfgs = create_chanmon_cfgs(2);
7408 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7409 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &user_cfgs);
7410 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7412 // We test config.our_to_self > BREAKDOWN_TIMEOUT is enforced in Channel::new_outbound()
7413 let keys_manager: Arc<KeysInterface<ChanKeySigner = EnforcingChannelKeys>> = Arc::new(test_utils::TestKeysInterface::new(&nodes[0].node_seed, Network::Testnet));
7414 if let Err(error) = Channel::new_outbound(&&test_utils::TestFeeEstimator { sat_per_kw: 253 }, &keys_manager, nodes[1].node.get_our_node_id(), 1000000, 1000000, 0, &low_our_to_self_config) {
7416 APIError::APIMisuseError { err } => { assert!(regex::Regex::new(r"Configured with an unreasonable our_to_self_delay \(\d+\) putting user funds at risks").unwrap().is_match(err.as_str())); },
7417 _ => panic!("Unexpected event"),
7419 } else { assert!(false) }
7421 // We test config.our_to_self > BREAKDOWN_TIMEOUT is enforced in Channel::new_from_req()
7422 nodes[1].node.create_channel(nodes[0].node.get_our_node_id(), 1000000, 1000000, 42, None).unwrap();
7423 let mut open_channel = get_event_msg!(nodes[1], MessageSendEvent::SendOpenChannel, nodes[0].node.get_our_node_id());
7424 open_channel.to_self_delay = 200;
7425 if let Err(error) = Channel::new_from_req(&&test_utils::TestFeeEstimator { sat_per_kw: 253 }, &keys_manager, nodes[1].node.get_our_node_id(), InitFeatures::known(), &open_channel, 0, &low_our_to_self_config) {
7427 ChannelError::Close(err) => { assert!(regex::Regex::new(r"Configured with an unreasonable our_to_self_delay \(\d+\) putting user funds at risks").unwrap().is_match(err.as_str())); },
7428 _ => panic!("Unexpected event"),
7430 } else { assert!(false); }
7432 // We test msg.to_self_delay <= config.their_to_self_delay is enforced in Chanel::accept_channel()
7433 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 1000000, 1000000, 42, None).unwrap();
7434 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id()));
7435 let mut accept_channel = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
7436 accept_channel.to_self_delay = 200;
7437 nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), InitFeatures::known(), &accept_channel);
7438 if let MessageSendEvent::HandleError { ref action, .. } = nodes[0].node.get_and_clear_pending_msg_events()[0] {
7440 &ErrorAction::SendErrorMessage { ref msg } => {
7441 assert!(regex::Regex::new(r"They wanted our payments to be delayed by a needlessly long period\. Upper limit: \d+\. Actual: \d+").unwrap().is_match(msg.data.as_str()));
7443 _ => { assert!(false); }
7445 } else { assert!(false); }
7447 // We test msg.to_self_delay <= config.their_to_self_delay is enforced in Channel::new_from_req()
7448 nodes[1].node.create_channel(nodes[0].node.get_our_node_id(), 1000000, 1000000, 42, None).unwrap();
7449 let mut open_channel = get_event_msg!(nodes[1], MessageSendEvent::SendOpenChannel, nodes[0].node.get_our_node_id());
7450 open_channel.to_self_delay = 200;
7451 if let Err(error) = Channel::new_from_req(&&test_utils::TestFeeEstimator { sat_per_kw: 253 }, &keys_manager, nodes[1].node.get_our_node_id(), InitFeatures::known(), &open_channel, 0, &high_their_to_self_config) {
7453 ChannelError::Close(err) => { assert!(regex::Regex::new(r"They wanted our payments to be delayed by a needlessly long period\. Upper limit: \d+\. Actual: \d+").unwrap().is_match(err.as_str())); },
7454 _ => panic!("Unexpected event"),
7456 } else { assert!(false); }
7460 fn test_data_loss_protect() {
7461 // We want to be sure that :
7462 // * we don't broadcast our Local Commitment Tx in case of fallen behind
7463 // * we close channel in case of detecting other being fallen behind
7464 // * we are able to claim our own outputs thanks to to_remote being static
7472 let chanmon_cfgs = create_chanmon_cfgs(2);
7473 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7474 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7475 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7477 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, InitFeatures::known(), InitFeatures::known());
7479 // Cache node A state before any channel update
7480 let previous_node_state = nodes[0].node.encode();
7481 let mut previous_chan_monitor_state = test_utils::TestVecWriter(Vec::new());
7482 nodes[0].chan_monitor.simple_monitor.monitors.lock().unwrap().iter().next().unwrap().1.write_for_disk(&mut previous_chan_monitor_state).unwrap();
7484 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
7485 send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000, 8_000_000);
7487 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
7488 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
7490 // Restore node A from previous state
7491 logger = test_utils::TestLogger::with_id(format!("node {}", 0));
7492 let mut chan_monitor = <(BlockHash, ChannelMonitor<EnforcingChannelKeys>)>::read(&mut ::std::io::Cursor::new(previous_chan_monitor_state.0)).unwrap().1;
7493 chain_monitor = ChainWatchInterfaceUtil::new(Network::Testnet);
7494 tx_broadcaster = test_utils::TestBroadcaster{txn_broadcasted: Mutex::new(Vec::new())};
7495 fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: 253 };
7496 keys_manager = test_utils::TestKeysInterface::new(&nodes[0].node_seed, Network::Testnet);
7497 monitor = test_utils::TestChannelMonitor::new(&chain_monitor, &tx_broadcaster, &logger, &fee_estimator);
7499 let mut channel_monitors = HashMap::new();
7500 channel_monitors.insert(OutPoint { txid: chan.3.txid(), index: 0 }, &mut chan_monitor);
7501 <(BlockHash, ChannelManager<EnforcingChannelKeys, &test_utils::TestChannelMonitor, &test_utils::TestBroadcaster, &test_utils::TestKeysInterface, &test_utils::TestFeeEstimator, &test_utils::TestLogger>)>::read(&mut ::std::io::Cursor::new(previous_node_state), ChannelManagerReadArgs {
7502 keys_manager: &keys_manager,
7503 fee_estimator: &fee_estimator,
7506 tx_broadcaster: &tx_broadcaster,
7507 default_config: UserConfig::default(),
7508 channel_monitors: &mut channel_monitors,
7511 nodes[0].node = &node_state_0;
7512 assert!(monitor.add_monitor(OutPoint { txid: chan.3.txid(), index: 0 }, chan_monitor).is_ok());
7513 nodes[0].chan_monitor = &monitor;
7514 nodes[0].chain_monitor = &chain_monitor;
7516 nodes[0].block_notifier = BlockNotifier::new(&nodes[0].chain_monitor);
7517 nodes[0].block_notifier.register_listener(&nodes[0].chan_monitor.simple_monitor);
7518 nodes[0].block_notifier.register_listener(nodes[0].node);
7520 check_added_monitors!(nodes[0], 1);
7522 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
7523 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
7525 let reestablish_0 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
7527 // Check we don't broadcast any transactions following learning of per_commitment_point from B
7528 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_0[0]);
7529 check_added_monitors!(nodes[0], 1);
7532 let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
7533 assert_eq!(node_txn.len(), 0);
7536 let mut reestablish_1 = Vec::with_capacity(1);
7537 for msg in nodes[0].node.get_and_clear_pending_msg_events() {
7538 if let MessageSendEvent::SendChannelReestablish { ref node_id, ref msg } = msg {
7539 assert_eq!(*node_id, nodes[1].node.get_our_node_id());
7540 reestablish_1.push(msg.clone());
7541 } else if let MessageSendEvent::BroadcastChannelUpdate { .. } = msg {
7542 } else if let MessageSendEvent::HandleError { ref action, .. } = msg {
7544 &ErrorAction::SendErrorMessage { ref msg } => {
7545 assert_eq!(msg.data, "We have fallen behind - we have received proof that if we broadcast remote is going to claim our funds - we can't do any automated broadcasting");
7547 _ => panic!("Unexpected event!"),
7550 panic!("Unexpected event")
7554 // Check we close channel detecting A is fallen-behind
7555 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
7556 assert_eq!(check_closed_broadcast!(nodes[1], true).unwrap().data, "Peer attempted to reestablish channel with a very old local commitment transaction");
7557 check_added_monitors!(nodes[1], 1);
7560 // Check A is able to claim to_remote output
7561 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone();
7562 assert_eq!(node_txn.len(), 1);
7563 check_spends!(node_txn[0], chan.3);
7564 assert_eq!(node_txn[0].output.len(), 2);
7565 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
7566 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![node_txn[0].clone()]}, 0);
7567 connect_blocks(&nodes[0].block_notifier, ANTI_REORG_DELAY - 1, 0, true, header.bitcoin_hash());
7568 let spend_txn = check_spendable_outputs!(nodes[0], 1, node_cfgs[0].keys_manager, 100000);
7569 assert_eq!(spend_txn.len(), 1);
7570 check_spends!(spend_txn[0], node_txn[0]);
7574 fn test_check_htlc_underpaying() {
7575 // Send payment through A -> B but A is maliciously
7576 // sending a probe payment (i.e less than expected value0
7577 // to B, B should refuse payment.
7579 let chanmon_cfgs = create_chanmon_cfgs(2);
7580 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7581 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7582 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7584 // Create some initial channels
7585 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
7587 let (payment_preimage, payment_hash) = route_payment(&nodes[0], &[&nodes[1]], 10_000);
7589 // Node 3 is expecting payment of 100_000 but receive 10_000,
7590 // fail htlc like we didn't know the preimage.
7591 nodes[1].node.claim_funds(payment_preimage, &None, 100_000);
7592 nodes[1].node.process_pending_htlc_forwards();
7594 let events = nodes[1].node.get_and_clear_pending_msg_events();
7595 assert_eq!(events.len(), 1);
7596 let (update_fail_htlc, commitment_signed) = match events[0] {
7597 MessageSendEvent::UpdateHTLCs { 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 } } => {
7598 assert!(update_add_htlcs.is_empty());
7599 assert!(update_fulfill_htlcs.is_empty());
7600 assert_eq!(update_fail_htlcs.len(), 1);
7601 assert!(update_fail_malformed_htlcs.is_empty());
7602 assert!(update_fee.is_none());
7603 (update_fail_htlcs[0].clone(), commitment_signed)
7605 _ => panic!("Unexpected event"),
7607 check_added_monitors!(nodes[1], 1);
7609 nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlc);
7610 commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false, true);
7612 // 10_000 msat as u64, followed by a height of 99 as u32
7613 let mut expected_failure_data = byte_utils::be64_to_array(10_000).to_vec();
7614 expected_failure_data.extend_from_slice(&byte_utils::be32_to_array(99));
7615 expect_payment_failed!(nodes[0], payment_hash, true, 0x4000|15, &expected_failure_data[..]);
7616 nodes[1].node.get_and_clear_pending_events();
7620 fn test_announce_disable_channels() {
7621 // Create 2 channels between A and B. Disconnect B. Call timer_chan_freshness_every_min and check for generated
7622 // ChannelUpdate. Reconnect B, reestablish and check there is non-generated ChannelUpdate.
7624 let chanmon_cfgs = create_chanmon_cfgs(2);
7625 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7626 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7627 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7629 let short_id_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
7630 let short_id_2 = create_announced_chan_between_nodes(&nodes, 1, 0, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
7631 let short_id_3 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
7634 nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false);
7635 nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false);
7637 nodes[0].node.timer_chan_freshness_every_min(); // dirty -> stagged
7638 nodes[0].node.timer_chan_freshness_every_min(); // staged -> fresh
7639 let msg_events = nodes[0].node.get_and_clear_pending_msg_events();
7640 assert_eq!(msg_events.len(), 3);
7641 for e in msg_events {
7643 MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
7644 let short_id = msg.contents.short_channel_id;
7645 // Check generated channel_update match list in PendingChannelUpdate
7646 if short_id != short_id_1 && short_id != short_id_2 && short_id != short_id_3 {
7647 panic!("Generated ChannelUpdate for wrong chan!");
7650 _ => panic!("Unexpected event"),
7654 nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
7655 let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]);
7656 assert_eq!(reestablish_1.len(), 3);
7657 nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() });
7658 let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]);
7659 assert_eq!(reestablish_2.len(), 3);
7661 // Reestablish chan_1
7662 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]);
7663 handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
7664 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]);
7665 handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
7666 // Reestablish chan_2
7667 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[1]);
7668 handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
7669 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[1]);
7670 handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
7671 // Reestablish chan_3
7672 nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[2]);
7673 handle_chan_reestablish_msgs!(nodes[0], nodes[1]);
7674 nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[2]);
7675 handle_chan_reestablish_msgs!(nodes[1], nodes[0]);
7677 nodes[0].node.timer_chan_freshness_every_min();
7678 assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
7682 fn test_bump_penalty_txn_on_revoked_commitment() {
7683 // In case of penalty txn with too low feerates for getting into mempools, RBF-bump them to be sure
7684 // we're able to claim outputs on revoked commitment transaction before timelocks expiration
7686 let chanmon_cfgs = create_chanmon_cfgs(2);
7687 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7688 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7689 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7691 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
7692 let logger = test_utils::TestLogger::new();
7695 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
7696 let net_graph_msg_handler = &nodes[1].net_graph_msg_handler;
7697 let route = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), None, &Vec::new(), 3000000, 30, &logger).unwrap();
7698 send_along_route(&nodes[1], route, &vec!(&nodes[0])[..], 3000000);
7700 let revoked_txn = get_local_commitment_txn!(nodes[0], chan.2);
7701 // Revoked commitment txn with 4 outputs : to_local, to_remote, 1 outgoing HTLC, 1 incoming HTLC
7702 assert_eq!(revoked_txn[0].output.len(), 4);
7703 assert_eq!(revoked_txn[0].input.len(), 1);
7704 assert_eq!(revoked_txn[0].input[0].previous_output.txid, chan.3.txid());
7705 let revoked_txid = revoked_txn[0].txid();
7707 let mut penalty_sum = 0;
7708 for outp in revoked_txn[0].output.iter() {
7709 if outp.script_pubkey.is_v0_p2wsh() {
7710 penalty_sum += outp.value;
7714 // Connect blocks to change height_timer range to see if we use right soonest_timelock
7715 let header_114 = connect_blocks(&nodes[1].block_notifier, 114, 0, false, Default::default());
7717 // Actually revoke tx by claiming a HTLC
7718 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 3_000_000);
7719 let header = BlockHeader { version: 0x20000000, prev_blockhash: header_114, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7720 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![revoked_txn[0].clone()] }, 115);
7721 check_added_monitors!(nodes[1], 1);
7723 // One or more justice tx should have been broadcast, check it
7727 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7728 assert_eq!(node_txn.len(), 3); // justice tx (broadcasted from ChannelMonitor) + local commitment tx + local HTLC-timeout (broadcasted from ChannelManager)
7729 assert_eq!(node_txn[0].input.len(), 3); // Penalty txn claims to_local, offered_htlc and received_htlc outputs
7730 assert_eq!(node_txn[0].output.len(), 1);
7731 check_spends!(node_txn[0], revoked_txn[0]);
7732 let fee_1 = penalty_sum - node_txn[0].output[0].value;
7733 feerate_1 = fee_1 * 1000 / node_txn[0].get_weight() as u64;
7734 penalty_1 = node_txn[0].txid();
7738 // After exhaustion of height timer, a new bumped justice tx should have been broadcast, check it
7739 let header = connect_blocks(&nodes[1].block_notifier, 3, 115, true, header.bitcoin_hash());
7740 let mut penalty_2 = penalty_1;
7741 let mut feerate_2 = 0;
7743 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7744 assert_eq!(node_txn.len(), 1);
7745 if node_txn[0].input[0].previous_output.txid == revoked_txid {
7746 assert_eq!(node_txn[0].input.len(), 3); // Penalty txn claims to_local, offered_htlc and received_htlc outputs
7747 assert_eq!(node_txn[0].output.len(), 1);
7748 check_spends!(node_txn[0], revoked_txn[0]);
7749 penalty_2 = node_txn[0].txid();
7750 // Verify new bumped tx is different from last claiming transaction, we don't want spurrious rebroadcast
7751 assert_ne!(penalty_2, penalty_1);
7752 let fee_2 = penalty_sum - node_txn[0].output[0].value;
7753 feerate_2 = fee_2 * 1000 / node_txn[0].get_weight() as u64;
7754 // Verify 25% bump heuristic
7755 assert!(feerate_2 * 100 >= feerate_1 * 125);
7759 assert_ne!(feerate_2, 0);
7761 // After exhaustion of height timer for a 2nd time, a new bumped justice tx should have been broadcast, check it
7762 connect_blocks(&nodes[1].block_notifier, 3, 118, true, header);
7764 let mut feerate_3 = 0;
7766 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7767 assert_eq!(node_txn.len(), 1);
7768 if node_txn[0].input[0].previous_output.txid == revoked_txid {
7769 assert_eq!(node_txn[0].input.len(), 3); // Penalty txn claims to_local, offered_htlc and received_htlc outputs
7770 assert_eq!(node_txn[0].output.len(), 1);
7771 check_spends!(node_txn[0], revoked_txn[0]);
7772 penalty_3 = node_txn[0].txid();
7773 // Verify new bumped tx is different from last claiming transaction, we don't want spurrious rebroadcast
7774 assert_ne!(penalty_3, penalty_2);
7775 let fee_3 = penalty_sum - node_txn[0].output[0].value;
7776 feerate_3 = fee_3 * 1000 / node_txn[0].get_weight() as u64;
7777 // Verify 25% bump heuristic
7778 assert!(feerate_3 * 100 >= feerate_2 * 125);
7782 assert_ne!(feerate_3, 0);
7784 nodes[1].node.get_and_clear_pending_events();
7785 nodes[1].node.get_and_clear_pending_msg_events();
7789 fn test_bump_penalty_txn_on_revoked_htlcs() {
7790 // In case of penalty txn with too low feerates for getting into mempools, RBF-bump them to sure
7791 // we're able to claim outputs on revoked HTLC transactions before timelocks expiration
7793 let chanmon_cfgs = create_chanmon_cfgs(2);
7794 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7795 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7796 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7798 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
7799 // Lock HTLC in both directions
7800 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3_000_000).0;
7801 route_payment(&nodes[1], &vec!(&nodes[0])[..], 3_000_000).0;
7803 let revoked_local_txn = get_local_commitment_txn!(nodes[1], chan.2);
7804 assert_eq!(revoked_local_txn[0].input.len(), 1);
7805 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan.3.txid());
7807 // Revoke local commitment tx
7808 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 3_000_000);
7810 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7811 // B will generate both revoked HTLC-timeout/HTLC-preimage txn from revoked commitment tx
7812 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
7813 check_closed_broadcast!(nodes[1], false);
7814 check_added_monitors!(nodes[1], 1);
7816 let revoked_htlc_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7817 assert_eq!(revoked_htlc_txn.len(), 4);
7818 if revoked_htlc_txn[0].input[0].witness.last().unwrap().len() == ACCEPTED_HTLC_SCRIPT_WEIGHT {
7819 assert_eq!(revoked_htlc_txn[0].input.len(), 1);
7820 check_spends!(revoked_htlc_txn[0], revoked_local_txn[0]);
7821 assert_eq!(revoked_htlc_txn[1].input.len(), 1);
7822 assert_eq!(revoked_htlc_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
7823 check_spends!(revoked_htlc_txn[1], revoked_local_txn[0]);
7824 } else if revoked_htlc_txn[1].input[0].witness.last().unwrap().len() == ACCEPTED_HTLC_SCRIPT_WEIGHT {
7825 assert_eq!(revoked_htlc_txn[1].input.len(), 1);
7826 check_spends!(revoked_htlc_txn[1], revoked_local_txn[0]);
7827 assert_eq!(revoked_htlc_txn[0].input.len(), 1);
7828 assert_eq!(revoked_htlc_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT);
7829 check_spends!(revoked_htlc_txn[0], revoked_local_txn[0]);
7832 // Broadcast set of revoked txn on A
7833 let header_128 = connect_blocks(&nodes[0].block_notifier, 128, 0, true, header.bitcoin_hash());
7834 expect_pending_htlcs_forwardable_ignore!(nodes[0]);
7836 let header_129 = BlockHeader { version: 0x20000000, prev_blockhash: header_128, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7837 nodes[0].block_notifier.block_connected(&Block { header: header_129, txdata: vec![revoked_local_txn[0].clone(), revoked_htlc_txn[0].clone(), revoked_htlc_txn[1].clone()] }, 129);
7842 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
7843 assert_eq!(node_txn.len(), 5); // 3 penalty txn on revoked commitment tx + A commitment tx + 1 penalty tnx on revoked HTLC txn
7844 // Verify claim tx are spending revoked HTLC txn
7845 assert_eq!(node_txn[4].input.len(), 2);
7846 assert_eq!(node_txn[4].output.len(), 1);
7847 check_spends!(node_txn[4], revoked_htlc_txn[0], revoked_htlc_txn[1]);
7848 first = node_txn[4].txid();
7849 // Store both feerates for later comparison
7850 let fee_1 = revoked_htlc_txn[0].output[0].value + revoked_htlc_txn[1].output[0].value - node_txn[4].output[0].value;
7851 feerate_1 = fee_1 * 1000 / node_txn[4].get_weight() as u64;
7852 penalty_txn = vec![node_txn[0].clone(), node_txn[1].clone(), node_txn[2].clone()];
7856 // Connect three more block to see if bumped penalty are issued for HTLC txn
7857 let header_130 = BlockHeader { version: 0x20000000, prev_blockhash: header_129.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7858 nodes[0].block_notifier.block_connected(&Block { header: header_130, txdata: penalty_txn }, 130);
7860 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
7861 assert_eq!(node_txn.len(), 2); // 2 bumped penalty txn on revoked commitment tx
7863 check_spends!(node_txn[0], revoked_local_txn[0]);
7864 check_spends!(node_txn[1], revoked_local_txn[0]);
7869 // Few more blocks to confirm penalty txn
7870 let header_135 = connect_blocks(&nodes[0].block_notifier, 5, 130, true, header_130.bitcoin_hash());
7871 assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
7872 let header_144 = connect_blocks(&nodes[0].block_notifier, 9, 135, true, header_135);
7874 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
7875 assert_eq!(node_txn.len(), 1);
7877 assert_eq!(node_txn[0].input.len(), 2);
7878 check_spends!(node_txn[0], revoked_htlc_txn[0], revoked_htlc_txn[1]);
7879 // Verify bumped tx is different and 25% bump heuristic
7880 assert_ne!(first, node_txn[0].txid());
7881 let fee_2 = revoked_htlc_txn[0].output[0].value + revoked_htlc_txn[1].output[0].value - node_txn[0].output[0].value;
7882 let feerate_2 = fee_2 * 1000 / node_txn[0].get_weight() as u64;
7883 assert!(feerate_2 * 100 > feerate_1 * 125);
7884 let txn = vec![node_txn[0].clone()];
7888 // Broadcast claim txn and confirm blocks to avoid further bumps on this outputs
7889 let header_145 = BlockHeader { version: 0x20000000, prev_blockhash: header_144, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7890 nodes[0].block_notifier.block_connected(&Block { header: header_145, txdata: node_txn }, 145);
7891 connect_blocks(&nodes[0].block_notifier, 20, 145, true, header_145.bitcoin_hash());
7893 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
7894 // We verify than no new transaction has been broadcast because previously
7895 // we were buggy on this exact behavior by not tracking for monitoring remote HTLC outputs (see #411)
7896 // which means we wouldn't see a spend of them by a justice tx and bumped justice tx
7897 // were generated forever instead of safe cleaning after confirmation and ANTI_REORG_SAFE_DELAY blocks.
7898 // Enforce spending of revoked htlc output by claiming transaction remove request as expected and dry
7899 // up bumped justice generation.
7900 assert_eq!(node_txn.len(), 0);
7903 check_closed_broadcast!(nodes[0], false);
7904 check_added_monitors!(nodes[0], 1);
7908 fn test_bump_penalty_txn_on_remote_commitment() {
7909 // In case of claim txn with too low feerates for getting into mempools, RBF-bump them to be sure
7910 // we're able to claim outputs on remote commitment transaction before timelocks expiration
7913 // Provide preimage for one
7914 // Check aggregation
7916 let chanmon_cfgs = create_chanmon_cfgs(2);
7917 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
7918 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
7919 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
7921 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
7922 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0;
7923 route_payment(&nodes[1], &vec!(&nodes[0])[..], 3000000).0;
7925 // Remote commitment txn with 4 outputs : to_local, to_remote, 1 outgoing HTLC, 1 incoming HTLC
7926 let remote_txn = get_local_commitment_txn!(nodes[0], chan.2);
7927 assert_eq!(remote_txn[0].output.len(), 4);
7928 assert_eq!(remote_txn[0].input.len(), 1);
7929 assert_eq!(remote_txn[0].input[0].previous_output.txid, chan.3.txid());
7931 // Claim a HTLC without revocation (provide B monitor with preimage)
7932 nodes[1].node.claim_funds(payment_preimage, &None, 3_000_000);
7933 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
7934 nodes[1].block_notifier.block_connected(&Block { header, txdata: vec![remote_txn[0].clone()] }, 1);
7935 check_added_monitors!(nodes[1], 2);
7937 // One or more claim tx should have been broadcast, check it
7940 let feerate_timeout;
7941 let feerate_preimage;
7943 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7944 assert_eq!(node_txn.len(), 5); // 2 * claim tx (broadcasted from ChannelMonitor) + local commitment tx + local HTLC-timeout + local HTLC-success (broadcasted from ChannelManager)
7945 assert_eq!(node_txn[0].input.len(), 1);
7946 assert_eq!(node_txn[1].input.len(), 1);
7947 check_spends!(node_txn[0], remote_txn[0]);
7948 check_spends!(node_txn[1], remote_txn[0]);
7949 check_spends!(node_txn[2], chan.3);
7950 check_spends!(node_txn[3], node_txn[2]);
7951 check_spends!(node_txn[4], node_txn[2]);
7952 if node_txn[0].input[0].witness.last().unwrap().len() == ACCEPTED_HTLC_SCRIPT_WEIGHT {
7953 timeout = node_txn[0].txid();
7954 let index = node_txn[0].input[0].previous_output.vout;
7955 let fee = remote_txn[0].output[index as usize].value - node_txn[0].output[0].value;
7956 feerate_timeout = fee * 1000 / node_txn[0].get_weight() as u64;
7958 preimage = node_txn[1].txid();
7959 let index = node_txn[1].input[0].previous_output.vout;
7960 let fee = remote_txn[0].output[index as usize].value - node_txn[1].output[0].value;
7961 feerate_preimage = fee * 1000 / node_txn[1].get_weight() as u64;
7963 timeout = node_txn[1].txid();
7964 let index = node_txn[1].input[0].previous_output.vout;
7965 let fee = remote_txn[0].output[index as usize].value - node_txn[1].output[0].value;
7966 feerate_timeout = fee * 1000 / node_txn[1].get_weight() as u64;
7968 preimage = node_txn[0].txid();
7969 let index = node_txn[0].input[0].previous_output.vout;
7970 let fee = remote_txn[0].output[index as usize].value - node_txn[0].output[0].value;
7971 feerate_preimage = fee * 1000 / node_txn[0].get_weight() as u64;
7975 assert_ne!(feerate_timeout, 0);
7976 assert_ne!(feerate_preimage, 0);
7978 // After exhaustion of height timer, new bumped claim txn should have been broadcast, check it
7979 connect_blocks(&nodes[1].block_notifier, 15, 1, true, header.bitcoin_hash());
7981 let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
7982 assert_eq!(node_txn.len(), 2);
7983 assert_eq!(node_txn[0].input.len(), 1);
7984 assert_eq!(node_txn[1].input.len(), 1);
7985 check_spends!(node_txn[0], remote_txn[0]);
7986 check_spends!(node_txn[1], remote_txn[0]);
7987 if node_txn[0].input[0].witness.last().unwrap().len() == ACCEPTED_HTLC_SCRIPT_WEIGHT {
7988 let index = node_txn[0].input[0].previous_output.vout;
7989 let fee = remote_txn[0].output[index as usize].value - node_txn[0].output[0].value;
7990 let new_feerate = fee * 1000 / node_txn[0].get_weight() as u64;
7991 assert!(new_feerate * 100 > feerate_timeout * 125);
7992 assert_ne!(timeout, node_txn[0].txid());
7994 let index = node_txn[1].input[0].previous_output.vout;
7995 let fee = remote_txn[0].output[index as usize].value - node_txn[1].output[0].value;
7996 let new_feerate = fee * 1000 / node_txn[1].get_weight() as u64;
7997 assert!(new_feerate * 100 > feerate_preimage * 125);
7998 assert_ne!(preimage, node_txn[1].txid());
8000 let index = node_txn[1].input[0].previous_output.vout;
8001 let fee = remote_txn[0].output[index as usize].value - node_txn[1].output[0].value;
8002 let new_feerate = fee * 1000 / node_txn[1].get_weight() as u64;
8003 assert!(new_feerate * 100 > feerate_timeout * 125);
8004 assert_ne!(timeout, node_txn[1].txid());
8006 let index = node_txn[0].input[0].previous_output.vout;
8007 let fee = remote_txn[0].output[index as usize].value - node_txn[0].output[0].value;
8008 let new_feerate = fee * 1000 / node_txn[0].get_weight() as u64;
8009 assert!(new_feerate * 100 > feerate_preimage * 125);
8010 assert_ne!(preimage, node_txn[0].txid());
8015 nodes[1].node.get_and_clear_pending_events();
8016 nodes[1].node.get_and_clear_pending_msg_events();
8020 fn test_set_outpoints_partial_claiming() {
8021 // - remote party claim tx, new bump tx
8022 // - disconnect remote claiming tx, new bump
8023 // - disconnect tx, see no tx anymore
8024 let chanmon_cfgs = create_chanmon_cfgs(2);
8025 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8026 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8027 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8029 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
8030 let payment_preimage_1 = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3_000_000).0;
8031 let payment_preimage_2 = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3_000_000).0;
8033 // Remote commitment txn with 4 outputs: to_local, to_remote, 2 outgoing HTLC
8034 let remote_txn = get_local_commitment_txn!(nodes[1], chan.2);
8035 assert_eq!(remote_txn.len(), 3);
8036 assert_eq!(remote_txn[0].output.len(), 4);
8037 assert_eq!(remote_txn[0].input.len(), 1);
8038 assert_eq!(remote_txn[0].input[0].previous_output.txid, chan.3.txid());
8039 check_spends!(remote_txn[1], remote_txn[0]);
8040 check_spends!(remote_txn[2], remote_txn[0]);
8042 // Connect blocks on node A to advance height towards TEST_FINAL_CLTV
8043 let prev_header_100 = connect_blocks(&nodes[1].block_notifier, 100, 0, false, Default::default());
8044 // Provide node A with both preimage
8045 nodes[0].node.claim_funds(payment_preimage_1, &None, 3_000_000);
8046 nodes[0].node.claim_funds(payment_preimage_2, &None, 3_000_000);
8047 check_added_monitors!(nodes[0], 2);
8048 nodes[0].node.get_and_clear_pending_events();
8049 nodes[0].node.get_and_clear_pending_msg_events();
8051 // Connect blocks on node A commitment transaction
8052 let header = BlockHeader { version: 0x20000000, prev_blockhash: prev_header_100, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8053 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![remote_txn[0].clone()] }, 101);
8054 check_closed_broadcast!(nodes[0], false);
8055 check_added_monitors!(nodes[0], 1);
8056 // Verify node A broadcast tx claiming both HTLCs
8058 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8059 // ChannelMonitor: claim tx, ChannelManager: local commitment tx + HTLC-Success*2
8060 assert_eq!(node_txn.len(), 4);
8061 check_spends!(node_txn[0], remote_txn[0]);
8062 check_spends!(node_txn[1], chan.3);
8063 check_spends!(node_txn[2], node_txn[1]);
8064 check_spends!(node_txn[3], node_txn[1]);
8065 assert_eq!(node_txn[0].input.len(), 2);
8069 // Connect blocks on node B
8070 connect_blocks(&nodes[1].block_notifier, 135, 0, false, Default::default());
8071 check_closed_broadcast!(nodes[1], false);
8072 check_added_monitors!(nodes[1], 1);
8073 // Verify node B broadcast 2 HTLC-timeout txn
8074 let partial_claim_tx = {
8075 let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
8076 assert_eq!(node_txn.len(), 3);
8077 check_spends!(node_txn[1], node_txn[0]);
8078 check_spends!(node_txn[2], node_txn[0]);
8079 assert_eq!(node_txn[1].input.len(), 1);
8080 assert_eq!(node_txn[2].input.len(), 1);
8084 // Broadcast partial claim on node A, should regenerate a claiming tx with HTLC dropped
8085 let header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8086 nodes[0].block_notifier.block_connected(&Block { header, txdata: vec![partial_claim_tx.clone()] }, 102);
8088 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8089 assert_eq!(node_txn.len(), 1);
8090 check_spends!(node_txn[0], remote_txn[0]);
8091 assert_eq!(node_txn[0].input.len(), 1); //dropped HTLC
8094 nodes[0].node.get_and_clear_pending_msg_events();
8096 // Disconnect last block on node A, should regenerate a claiming tx with HTLC dropped
8097 nodes[0].block_notifier.block_disconnected(&header, 102);
8099 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8100 assert_eq!(node_txn.len(), 1);
8101 check_spends!(node_txn[0], remote_txn[0]);
8102 assert_eq!(node_txn[0].input.len(), 2); //resurrected HTLC
8106 //// Disconnect one more block and then reconnect multiple no transaction should be generated
8107 nodes[0].block_notifier.block_disconnected(&header, 101);
8108 connect_blocks(&nodes[1].block_notifier, 15, 101, false, prev_header_100);
8110 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8111 assert_eq!(node_txn.len(), 0);
8117 fn test_counterparty_raa_skip_no_crash() {
8118 // Previously, if our counterparty sent two RAAs in a row without us having provided a
8119 // commitment transaction, we would have happily carried on and provided them the next
8120 // commitment transaction based on one RAA forward. This would probably eventually have led to
8121 // channel closure, but it would not have resulted in funds loss. Still, our
8122 // EnforcingChannelKeys would have paniced as it doesn't like jumps into the future. Here, we
8123 // check simply that the channel is closed in response to such an RAA, but don't check whether
8124 // we decide to punish our counterparty for revoking their funds (as we don't currently
8126 let chanmon_cfgs = create_chanmon_cfgs(2);
8127 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8128 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8129 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8130 let channel_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
8132 let mut guard = nodes[0].node.channel_state.lock().unwrap();
8133 let local_keys = &guard.by_id.get_mut(&channel_id).unwrap().local_keys;
8134 const INITIAL_COMMITMENT_NUMBER: u64 = (1 << 48) - 1;
8135 let next_per_commitment_point = PublicKey::from_secret_key(&Secp256k1::new(),
8136 &SecretKey::from_slice(&local_keys.commitment_secret(INITIAL_COMMITMENT_NUMBER - 2)).unwrap());
8137 let per_commitment_secret = local_keys.commitment_secret(INITIAL_COMMITMENT_NUMBER);
8139 nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(),
8140 &msgs::RevokeAndACK { channel_id, per_commitment_secret, next_per_commitment_point });
8141 assert_eq!(check_closed_broadcast!(nodes[1], true).unwrap().data, "Received an unexpected revoke_and_ack");
8142 check_added_monitors!(nodes[1], 1);
8146 fn test_bump_txn_sanitize_tracking_maps() {
8147 // Sanitizing pendning_claim_request and claimable_outpoints used to be buggy,
8148 // verify we clean then right after expiration of ANTI_REORG_DELAY.
8150 let chanmon_cfgs = create_chanmon_cfgs(2);
8151 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8152 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8153 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8155 let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 59000000, InitFeatures::known(), InitFeatures::known());
8156 // Lock HTLC in both directions
8157 let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9_000_000).0;
8158 route_payment(&nodes[1], &vec!(&nodes[0])[..], 9_000_000).0;
8160 let revoked_local_txn = get_local_commitment_txn!(nodes[1], chan.2);
8161 assert_eq!(revoked_local_txn[0].input.len(), 1);
8162 assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan.3.txid());
8164 // Revoke local commitment tx
8165 claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage, 9_000_000);
8167 // Broadcast set of revoked txn on A
8168 let header_128 = connect_blocks(&nodes[0].block_notifier, 128, 0, false, Default::default());
8169 expect_pending_htlcs_forwardable_ignore!(nodes[0]);
8171 let header_129 = BlockHeader { version: 0x20000000, prev_blockhash: header_128, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8172 nodes[0].block_notifier.block_connected(&Block { header: header_129, txdata: vec![revoked_local_txn[0].clone()] }, 129);
8173 check_closed_broadcast!(nodes[0], false);
8174 check_added_monitors!(nodes[0], 1);
8176 let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap();
8177 assert_eq!(node_txn.len(), 4); //ChannelMonitor: justice txn * 3, ChannelManager: local commitment tx
8178 check_spends!(node_txn[0], revoked_local_txn[0]);
8179 check_spends!(node_txn[1], revoked_local_txn[0]);
8180 check_spends!(node_txn[2], revoked_local_txn[0]);
8181 let penalty_txn = vec![node_txn[0].clone(), node_txn[1].clone(), node_txn[2].clone()];
8185 let header_130 = BlockHeader { version: 0x20000000, prev_blockhash: header_129.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8186 nodes[0].block_notifier.block_connected(&Block { header: header_130, txdata: penalty_txn }, 130);
8187 connect_blocks(&nodes[0].block_notifier, 5, 130, false, header_130.bitcoin_hash());
8189 let monitors = nodes[0].chan_monitor.simple_monitor.monitors.lock().unwrap();
8190 if let Some(monitor) = monitors.get(&OutPoint { txid: chan.3.txid(), index: 0 }) {
8191 assert!(monitor.onchain_tx_handler.pending_claim_requests.is_empty());
8192 assert!(monitor.onchain_tx_handler.claimable_outpoints.is_empty());
8198 fn test_override_channel_config() {
8199 let chanmon_cfgs = create_chanmon_cfgs(2);
8200 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8201 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8202 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8204 // Node0 initiates a channel to node1 using the override config.
8205 let mut override_config = UserConfig::default();
8206 override_config.own_channel_config.our_to_self_delay = 200;
8208 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 16_000_000, 12_000_000, 42, Some(override_config)).unwrap();
8210 // Assert the channel created by node0 is using the override config.
8211 let res = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
8212 assert_eq!(res.channel_flags, 0);
8213 assert_eq!(res.to_self_delay, 200);
8217 fn test_override_0msat_htlc_minimum() {
8218 let mut zero_config = UserConfig::default();
8219 zero_config.own_channel_config.our_htlc_minimum_msat = 0;
8220 let chanmon_cfgs = create_chanmon_cfgs(2);
8221 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8222 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, Some(zero_config.clone())]);
8223 let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8225 nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 16_000_000, 12_000_000, 42, Some(zero_config)).unwrap();
8226 let res = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
8227 assert_eq!(res.htlc_minimum_msat, 1);
8229 nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &res);
8230 let res = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
8231 assert_eq!(res.htlc_minimum_msat, 1);
8235 fn test_simple_payment_secret() {
8236 // Simple test of sending a payment with a payment_secret present. This does not use any AMP
8237 // features, however.
8238 let chanmon_cfgs = create_chanmon_cfgs(3);
8239 let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
8240 let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
8241 let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
8243 create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
8244 create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known());
8245 let logger = test_utils::TestLogger::new();
8247 let (payment_preimage, payment_hash) = get_payment_preimage_hash!(&nodes[0]);
8248 let payment_secret = PaymentSecret([0xdb; 32]);
8249 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
8250 let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
8251 send_along_route_with_secret(&nodes[0], route, &[&[&nodes[1], &nodes[2]]], 100000, payment_hash, Some(payment_secret.clone()));
8252 // Claiming with all the correct values but the wrong secret should result in nothing...
8253 assert_eq!(nodes[2].node.claim_funds(payment_preimage, &None, 100_000), false);
8254 assert_eq!(nodes[2].node.claim_funds(payment_preimage, &Some(PaymentSecret([42; 32])), 100_000), false);
8255 // ...but with the right secret we should be able to claim all the way back
8256 claim_payment_along_route_with_secret(&nodes[0], &[&[&nodes[1], &nodes[2]]], false, payment_preimage, Some(payment_secret.clone()), 100_000);
8260 fn test_simple_mpp() {
8261 // Simple test of sending a multi-path payment.
8262 let chanmon_cfgs = create_chanmon_cfgs(4);
8263 let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
8264 let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
8265 let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
8267 let chan_1_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
8268 let chan_2_id = create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
8269 let chan_3_id = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
8270 let chan_4_id = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
8271 let logger = test_utils::TestLogger::new();
8273 let (payment_preimage, payment_hash) = get_payment_preimage_hash!(&nodes[0]);
8274 let payment_secret = PaymentSecret([0xdb; 32]);
8275 let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
8276 let mut route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[3].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
8277 let path = route.paths[0].clone();
8278 route.paths.push(path);
8279 route.paths[0][0].pubkey = nodes[1].node.get_our_node_id();
8280 route.paths[0][0].short_channel_id = chan_1_id;
8281 route.paths[0][1].short_channel_id = chan_3_id;
8282 route.paths[1][0].pubkey = nodes[2].node.get_our_node_id();
8283 route.paths[1][0].short_channel_id = chan_2_id;
8284 route.paths[1][1].short_channel_id = chan_4_id;
8285 send_along_route_with_secret(&nodes[0], route, &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], 200_000, payment_hash, Some(payment_secret.clone()));
8286 // Claiming with all the correct values but the wrong secret should result in nothing...
8287 assert_eq!(nodes[3].node.claim_funds(payment_preimage, &None, 200_000), false);
8288 assert_eq!(nodes[3].node.claim_funds(payment_preimage, &Some(PaymentSecret([42; 32])), 200_000), false);
8289 // ...but with the right secret we should be able to claim all the way back
8290 claim_payment_along_route_with_secret(&nodes[0], &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], false, payment_preimage, Some(payment_secret), 200_000);
8294 fn test_update_err_monitor_lockdown() {
8295 // Our monitor will lock update of local commitment transaction if a broadcastion condition
8296 // has been fulfilled (either force-close from Channel or block height requiring a HTLC-
8297 // timeout). Trying to update monitor after lockdown should return a ChannelMonitorUpdateErr.
8299 // This scenario may happen in a watchtower setup, where watchtower process a block height
8300 // triggering a timeout while a slow-block-processing ChannelManager receives a local signed
8301 // commitment at same time.
8303 let chanmon_cfgs = create_chanmon_cfgs(2);
8304 let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
8305 let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
8306 let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
8308 // Create some initial channel
8309 let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
8310 let outpoint = OutPoint { txid: chan_1.3.txid(), index: 0 };
8312 // Rebalance the network to generate htlc in the two directions
8313 send_payment(&nodes[0], &vec!(&nodes[1])[..], 10_000_000, 10_000_000);
8315 // Route a HTLC from node 0 to node 1 (but don't settle)
8316 let preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9_000_000).0;
8318 // Copy SimpleManyChannelMonitor to simulate a watchtower and update block height of node 0 until its ChannelMonitor timeout HTLC onchain
8319 let logger = test_utils::TestLogger::with_id(format!("node {}", 0));
8320 let chain_monitor = chaininterface::ChainWatchInterfaceUtil::new(Network::Testnet);
8322 let monitors = nodes[0].chan_monitor.simple_monitor.monitors.lock().unwrap();
8323 let monitor = monitors.get(&outpoint).unwrap();
8324 let mut w = test_utils::TestVecWriter(Vec::new());
8325 monitor.write_for_disk(&mut w).unwrap();
8326 let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingChannelKeys>)>::read(
8327 &mut ::std::io::Cursor::new(&w.0)).unwrap().1;
8328 assert!(new_monitor == *monitor);
8329 let watchtower = test_utils::TestChannelMonitor::new(&chain_monitor, &chanmon_cfgs[0].tx_broadcaster, &logger, &chanmon_cfgs[0].fee_estimator);
8330 assert!(watchtower.add_monitor(outpoint, new_monitor).is_ok());
8333 let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
8334 watchtower.simple_monitor.block_connected(&header, 200, &vec![], &vec![]);
8336 // Try to update ChannelMonitor
8337 assert!(nodes[1].node.claim_funds(preimage, &None, 9_000_000));
8338 check_added_monitors!(nodes[1], 1);
8339 let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
8340 assert_eq!(updates.update_fulfill_htlcs.len(), 1);
8341 nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]);
8342 if let Some(ref mut channel) = nodes[0].node.channel_state.lock().unwrap().by_id.get_mut(&chan_1.2) {
8343 if let Ok((_, _, _, update)) = channel.commitment_signed(&updates.commitment_signed, &node_cfgs[0].fee_estimator, &node_cfgs[0].logger) {
8344 if let Err(_) = watchtower.simple_monitor.update_monitor(outpoint, update.clone()) {} else { assert!(false); }
8345 if let Ok(_) = nodes[0].chan_monitor.update_monitor(outpoint, update) {} else { assert!(false); }
8346 } else { assert!(false); }
8347 } else { assert!(false); };
8348 // Our local monitor is in-sync and hasn't processed yet timeout
8349 check_added_monitors!(nodes[0], 1);
8350 let events = nodes[0].node.get_and_clear_pending_events();
8351 assert_eq!(events.len(), 1);