let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
- create_announced_chan_between_nodes(&nodes, 0, 1).2;
- create_announced_chan_between_nodes(&nodes, 1, 2).2;
+ create_announced_chan_between_nodes(&nodes, 0, 1);
+ let chan_id_2 = create_announced_chan_between_nodes(&nodes, 1, 2).2;
send_payment(&nodes[0], &[&nodes[1], &nodes[2]], 5_000_000);
let as_htlc_fulfill_updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
nodes[1].node.handle_update_fulfill_htlc(&nodes[0].node.get_our_node_id(), &as_htlc_fulfill_updates.update_fulfill_htlcs[0]);
check_added_monitors(&nodes[1], 1); // We generate only a preimage monitor update
+ assert!(get_monitor!(nodes[1], chan_id_2).get_stored_preimages().contains_key(&payment_hash_2));
assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
- // Finish the CS dance between nodes[0] and nodes[1].
- do_commitment_signed_dance(&nodes[1], &nodes[0], &as_htlc_fulfill_updates.commitment_signed, false, false);
+ // Finish the CS dance between nodes[0] and nodes[1]. Note that until the event handling, the
+ // update_fulfill_htlc + CS is held, even though the preimage is already on disk for the
+ // channel.
+ nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_htlc_fulfill_updates.commitment_signed);
+ check_added_monitors(&nodes[1], 1);
+ let (a, raa) = do_main_commitment_signed_dance(&nodes[1], &nodes[0], false);
+ assert!(a.is_none());
+
+ nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &raa);
check_added_monitors(&nodes[1], 0);
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
let events = nodes[1].node.get_and_clear_pending_events();
assert_eq!(events.len(), 3);
if let Event::PaymentPathSuccessful { .. } = events[2] {} else { panic!(); }
if let Event::PaymentForwarded { .. } = events[1] {} else { panic!(); }
- // The event processing should release the last RAA update.
- check_added_monitors(&nodes[1], 1);
+ // The event processing should release the last RAA updates on both channels.
+ check_added_monitors(&nodes[1], 2);
// When we fetch the next update the message getter will generate the next update for nodes[2],
// generating a further monitor update.
do_commitment_signed_dance(&nodes[2], &nodes[1], &bs_htlc_fulfill_updates.commitment_signed, false, false);
expect_payment_sent(&nodes[2], payment_preimage_2, None, true, true);
}
+
+fn do_test_inverted_mon_completion_order(with_latest_manager: bool, complete_bc_commitment_dance: bool) {
+ // When we forward a payment and receive `update_fulfill_htlc`+`commitment_signed` messages
+ // from the downstream channel, we immediately claim the HTLC on the upstream channel, before
+ // even doing a `commitment_signed` dance on the downstream channel. This implies that our
+ // `ChannelMonitorUpdate`s are generated in the right order - first we ensure we'll get our
+ // money, then we write the update that resolves the downstream node claiming their money. This
+ // is safe as long as `ChannelMonitorUpdate`s complete in the order in which they are
+ // generated, but of course this may not be the case. For asynchronous update writes, we have
+ // to ensure monitor updates can block each other, preventing the inversion all together.
+ let chanmon_cfgs = create_chanmon_cfgs(3);
+ let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
+
+ let persister;
+ let new_chain_monitor;
+ let nodes_1_deserialized;
+
+ let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
+ let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+ let chan_id_ab = create_announced_chan_between_nodes(&nodes, 0, 1).2;
+ let chan_id_bc = create_announced_chan_between_nodes(&nodes, 1, 2).2;
+
+ // Route a payment from A, through B, to C, then claim it on C. Once we pass B the
+ // `update_fulfill_htlc` we have a monitor update for both of B's channels. We complete the one
+ // on the B<->C channel but leave the A<->B monitor update pending, then reload B.
+ let (payment_preimage, payment_hash, ..) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100_000);
+
+ let mon_ab = get_monitor!(nodes[1], chan_id_ab).encode();
+ let mut manager_b = Vec::new();
+ if !with_latest_manager {
+ manager_b = nodes[1].node.encode();
+ }
+
+ nodes[2].node.claim_funds(payment_preimage);
+ check_added_monitors(&nodes[2], 1);
+ expect_payment_claimed!(nodes[2], payment_hash, 100_000);
+
+ chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
+ let cs_updates = get_htlc_update_msgs(&nodes[2], &nodes[1].node.get_our_node_id());
+ nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &cs_updates.update_fulfill_htlcs[0]);
+
+ // B generates a new monitor update for the A <-> B channel, but doesn't send the new messages
+ // for it since the monitor update is marked in-progress.
+ check_added_monitors(&nodes[1], 1);
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+
+ // Now step the Commitment Signed Dance between B and C forward a bit (or fully), ensuring we
+ // won't get the preimage when the nodes reconnect and we have to get it from the
+ // ChannelMonitor.
+ nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &cs_updates.commitment_signed);
+ check_added_monitors(&nodes[1], 1);
+ if complete_bc_commitment_dance {
+ let (bs_revoke_and_ack, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[2].node.get_our_node_id());
+ nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack);
+ check_added_monitors(&nodes[2], 1);
+ nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_commitment_signed);
+ check_added_monitors(&nodes[2], 1);
+ let cs_raa = get_event_msg!(nodes[2], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
+
+ // At this point node B still hasn't persisted the `ChannelMonitorUpdate` with the
+ // preimage in the A <-> B channel, which will prevent it from persisting the
+ // `ChannelMonitorUpdate` for the B<->C channel here to avoid "losing" the preimage.
+ nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &cs_raa);
+ check_added_monitors(&nodes[1], 0);
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+ }
+
+ // Now reload node B
+ if with_latest_manager {
+ manager_b = nodes[1].node.encode();
+ }
+
+ let mon_bc = get_monitor!(nodes[1], chan_id_bc).encode();
+ reload_node!(nodes[1], &manager_b, &[&mon_ab, &mon_bc], persister, new_chain_monitor, nodes_1_deserialized);
+
+ nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+ nodes[2].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+
+ if with_latest_manager {
+ // If we used the latest ChannelManager to reload from, we should have both channels still
+ // live. The B <-> C channel's final RAA ChannelMonitorUpdate must still be blocked as
+ // before - the ChannelMonitorUpdate for the A <-> B channel hasn't completed.
+ // When we call `timer_tick_occurred` we will get that monitor update back, which we'll
+ // complete after reconnecting to our peers.
+ persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
+ nodes[1].node.timer_tick_occurred();
+ check_added_monitors(&nodes[1], 1);
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+
+ // Now reconnect B to both A and C. If the B <-> C commitment signed dance wasn't run to
+ // the end go ahead and do that, though the
+ // `pending_responding_commitment_signed_dup_monitor` in `reconnect_args` indicates that we
+ // expect to *not* receive the final RAA ChannelMonitorUpdate.
+ if complete_bc_commitment_dance {
+ reconnect_nodes(ReconnectArgs::new(&nodes[1], &nodes[2]));
+ } else {
+ let mut reconnect_args = ReconnectArgs::new(&nodes[1], &nodes[2]);
+ reconnect_args.pending_responding_commitment_signed.1 = true;
+ reconnect_args.pending_responding_commitment_signed_dup_monitor.1 = true;
+ reconnect_args.pending_raa = (false, true);
+ reconnect_nodes(reconnect_args);
+ }
+
+ reconnect_nodes(ReconnectArgs::new(&nodes[0], &nodes[1]));
+
+ // (Finally) complete the A <-> B ChannelMonitorUpdate, ensuring the preimage is durably on
+ // disk in the proper ChannelMonitor, unblocking the B <-> C ChannelMonitor updating
+ // process.
+ let (outpoint, _, ab_update_id) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_id_ab).unwrap().clone();
+ nodes[1].chain_monitor.chain_monitor.channel_monitor_updated(outpoint, ab_update_id).unwrap();
+
+ // When we fetch B's HTLC update messages next (now that the ChannelMonitorUpdate has
+ // completed), it will also release the final RAA ChannelMonitorUpdate on the B <-> C
+ // channel.
+ } else {
+ // If the ChannelManager used in the reload was stale, check that the B <-> C channel was
+ // closed.
+ //
+ // Note that this will also process the ChannelMonitorUpdates which were queued up when we
+ // reloaded the ChannelManager. This will re-emit the A<->B preimage as well as the B<->C
+ // force-closure ChannelMonitorUpdate. Once the A<->B preimage update completes, the claim
+ // commitment update will be allowed to go out.
+ check_added_monitors(&nodes[1], 0);
+ persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
+ persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
+ check_closed_event(&nodes[1], 1, ClosureReason::OutdatedChannelManager, false, &[nodes[2].node.get_our_node_id()], 100_000);
+ check_added_monitors(&nodes[1], 2);
+
+ nodes[1].node.timer_tick_occurred();
+ check_added_monitors(&nodes[1], 0);
+
+ // Don't bother to reconnect B to C - that channel has been closed. We don't need to
+ // exchange any messages here even though there's a pending commitment update because the
+ // ChannelMonitorUpdate hasn't yet completed.
+ reconnect_nodes(ReconnectArgs::new(&nodes[0], &nodes[1]));
+
+ let (outpoint, _, ab_update_id) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_id_ab).unwrap().clone();
+ nodes[1].chain_monitor.chain_monitor.channel_monitor_updated(outpoint, ab_update_id).unwrap();
+
+ // The ChannelMonitorUpdate which was completed prior to the reconnect only contained the
+ // preimage (as it was a replay of the original ChannelMonitorUpdate from before we
+ // restarted). When we go to fetch the commitment transaction updates we'll poll the
+ // ChannelMonitorUpdate completion, then generate (and complete) a new ChannelMonitorUpdate
+ // with the actual commitment transaction, which will allow us to fulfill the HTLC with
+ // node A.
+ }
+
+ let bs_updates = get_htlc_update_msgs(&nodes[1], &nodes[0].node.get_our_node_id());
+ check_added_monitors(&nodes[1], 1);
+
+ nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_updates.update_fulfill_htlcs[0]);
+ do_commitment_signed_dance(&nodes[0], &nodes[1], &bs_updates.commitment_signed, false, false);
+
+ expect_payment_forwarded!(nodes[1], &nodes[0], &nodes[2], Some(1_000), false, !with_latest_manager);
+
+ // Finally, check that the payment was, ultimately, seen as sent by node A.
+ expect_payment_sent(&nodes[0], payment_preimage, None, true, true);
+}
+
+#[test]
+fn test_inverted_mon_completion_order() {
+ do_test_inverted_mon_completion_order(true, true);
+ do_test_inverted_mon_completion_order(true, false);
+ do_test_inverted_mon_completion_order(false, true);
+ do_test_inverted_mon_completion_order(false, false);
+}
+
+fn do_test_durable_preimages_on_closed_channel(close_chans_before_reload: bool, close_only_a: bool, hold_post_reload_mon_update: bool) {
+ // Test that we can apply a `ChannelMonitorUpdate` with a payment preimage even if the channel
+ // is force-closed between when we generate the update on reload and when we go to handle the
+ // update or prior to generating the update at all.
+
+ if !close_chans_before_reload && close_only_a {
+ // If we're not closing, it makes no sense to "only close A"
+ panic!();
+ }
+
+ let chanmon_cfgs = create_chanmon_cfgs(3);
+ let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
+
+ let persister;
+ let new_chain_monitor;
+ let nodes_1_deserialized;
+
+ let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
+ let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+ let chan_id_ab = create_announced_chan_between_nodes(&nodes, 0, 1).2;
+ let chan_id_bc = create_announced_chan_between_nodes(&nodes, 1, 2).2;
+
+ // Route a payment from A, through B, to C, then claim it on C. Once we pass B the
+ // `update_fulfill_htlc` we have a monitor update for both of B's channels. We complete the one
+ // on the B<->C channel but leave the A<->B monitor update pending, then reload B.
+ let (payment_preimage, payment_hash, ..) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1_000_000);
+
+ let mon_ab = get_monitor!(nodes[1], chan_id_ab).encode();
+
+ nodes[2].node.claim_funds(payment_preimage);
+ check_added_monitors(&nodes[2], 1);
+ expect_payment_claimed!(nodes[2], payment_hash, 1_000_000);
+
+ chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
+ let cs_updates = get_htlc_update_msgs(&nodes[2], &nodes[1].node.get_our_node_id());
+ nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &cs_updates.update_fulfill_htlcs[0]);
+
+ // B generates a new monitor update for the A <-> B channel, but doesn't send the new messages
+ // for it since the monitor update is marked in-progress.
+ check_added_monitors(&nodes[1], 1);
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+
+ // Now step the Commitment Signed Dance between B and C forward a bit, ensuring we won't get
+ // the preimage when the nodes reconnect, at which point we have to ensure we get it from the
+ // ChannelMonitor.
+ nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &cs_updates.commitment_signed);
+ check_added_monitors(&nodes[1], 1);
+ let _ = get_revoke_commit_msgs!(nodes[1], nodes[2].node.get_our_node_id());
+
+ let mon_bc = get_monitor!(nodes[1], chan_id_bc).encode();
+
+ if close_chans_before_reload {
+ if !close_only_a {
+ chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
+ nodes[1].node.force_close_broadcasting_latest_txn(&chan_id_bc, &nodes[2].node.get_our_node_id()).unwrap();
+ check_closed_broadcast(&nodes[1], 1, true);
+ check_closed_event(&nodes[1], 1, ClosureReason::HolderForceClosed, false, &[nodes[2].node.get_our_node_id()], 100000);
+ }
+
+ chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
+ nodes[1].node.force_close_broadcasting_latest_txn(&chan_id_ab, &nodes[0].node.get_our_node_id()).unwrap();
+ check_closed_broadcast(&nodes[1], 1, true);
+ check_closed_event(&nodes[1], 1, ClosureReason::HolderForceClosed, false, &[nodes[0].node.get_our_node_id()], 100000);
+ }
+
+ // Now reload node B
+ let manager_b = nodes[1].node.encode();
+ reload_node!(nodes[1], &manager_b, &[&mon_ab, &mon_bc], persister, new_chain_monitor, nodes_1_deserialized);
+
+ nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+ nodes[2].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+
+ if close_chans_before_reload {
+ // If the channels were already closed, B will rebroadcast its closing transactions here.
+ let bs_close_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
+ if close_only_a {
+ assert_eq!(bs_close_txn.len(), 2);
+ } else {
+ assert_eq!(bs_close_txn.len(), 3);
+ }
+ }
+
+ nodes[0].node.force_close_broadcasting_latest_txn(&chan_id_ab, &nodes[1].node.get_our_node_id()).unwrap();
+ check_closed_event(&nodes[0], 1, ClosureReason::HolderForceClosed, false, &[nodes[1].node.get_our_node_id()], 100000);
+ let as_closing_tx = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
+ assert_eq!(as_closing_tx.len(), 1);
+
+ // In order to give A's closing transaction to B without processing background events first,
+ // use the _without_consistency_checks utility method. This is similar to connecting blocks
+ // during startup prior to the node being full initialized.
+ mine_transaction_without_consistency_checks(&nodes[1], &as_closing_tx[0]);
+
+ // After a timer tick a payment preimage ChannelMonitorUpdate is applied to the A<->B
+ // ChannelMonitor (possible twice), even though the channel has since been closed.
+ check_added_monitors(&nodes[1], 0);
+ let mons_added = if close_chans_before_reload { if !close_only_a { 4 } else { 3 } } else { 2 };
+ if hold_post_reload_mon_update {
+ for _ in 0..mons_added {
+ persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
+ }
+ }
+ nodes[1].node.timer_tick_occurred();
+ check_added_monitors(&nodes[1], mons_added);
+
+ // Finally, check that B created a payment preimage transaction and close out the payment.
+ let bs_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
+ assert_eq!(bs_txn.len(), if close_chans_before_reload && !close_only_a { 2 } else { 1 });
+ let bs_preimage_tx = &bs_txn[0];
+ check_spends!(bs_preimage_tx, as_closing_tx[0]);
+
+ if !close_chans_before_reload {
+ check_closed_broadcast(&nodes[1], 1, true);
+ check_closed_event(&nodes[1], 1, ClosureReason::CommitmentTxConfirmed, false, &[nodes[0].node.get_our_node_id()], 100000);
+ } else {
+ // While we forwarded the payment a while ago, we don't want to process events too early or
+ // we'll run background tasks we wanted to test individually.
+ expect_payment_forwarded!(nodes[1], nodes[0], nodes[2], None, true, !close_only_a);
+ }
+
+ mine_transactions(&nodes[0], &[&as_closing_tx[0], bs_preimage_tx]);
+ check_closed_broadcast(&nodes[0], 1, true);
+ expect_payment_sent(&nodes[0], payment_preimage, None, true, true);
+
+ if !close_chans_before_reload || close_only_a {
+ // Make sure the B<->C channel is still alive and well by sending a payment over it.
+ let mut reconnect_args = ReconnectArgs::new(&nodes[1], &nodes[2]);
+ reconnect_args.pending_responding_commitment_signed.1 = true;
+ if !close_chans_before_reload {
+ // TODO: If the A<->B channel was closed before we reloaded, the `ChannelManager`
+ // will consider the forwarded payment complete and allow the B<->C
+ // `ChannelMonitorUpdate` to complete, wiping the payment preimage. This should not
+ // be allowed, and needs fixing.
+ reconnect_args.pending_responding_commitment_signed_dup_monitor.1 = true;
+ }
+ reconnect_args.pending_raa.1 = true;
+
+ reconnect_nodes(reconnect_args);
+ let (outpoint, ab_update_id, _) = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_id_ab).unwrap().clone();
+ nodes[1].chain_monitor.chain_monitor.force_channel_monitor_updated(outpoint, ab_update_id);
+ expect_payment_forwarded!(nodes[1], nodes[0], nodes[2], Some(1000), true, false);
+ if !close_chans_before_reload {
+ // Once we call `process_pending_events` the final `ChannelMonitor` for the B<->C
+ // channel will fly, removing the payment preimage from it.
+ check_added_monitors(&nodes[1], 1);
+ }
+ assert!(nodes[1].node.get_and_clear_pending_events().is_empty());
+ send_payment(&nodes[1], &[&nodes[2]], 100_000);
+ }
+}
+
+#[test]
+fn test_durable_preimages_on_closed_channel() {
+ do_test_durable_preimages_on_closed_channel(true, true, true);
+ do_test_durable_preimages_on_closed_channel(true, true, false);
+ do_test_durable_preimages_on_closed_channel(true, false, true);
+ do_test_durable_preimages_on_closed_channel(true, false, false);
+ do_test_durable_preimages_on_closed_channel(false, false, true);
+ do_test_durable_preimages_on_closed_channel(false, false, false);
+}
+
+fn do_test_reload_mon_update_completion_actions(close_during_reload: bool) {
+ // Test that if a `ChannelMonitorUpdate` completes but a `ChannelManager` isn't serialized
+ // before restart we run the monitor update completion action on startup.
+ let chanmon_cfgs = create_chanmon_cfgs(3);
+ let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
+
+ let persister;
+ let new_chain_monitor;
+ let nodes_1_deserialized;
+
+ let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
+ let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+ let chan_id_ab = create_announced_chan_between_nodes(&nodes, 0, 1).2;
+ let chan_id_bc = create_announced_chan_between_nodes(&nodes, 1, 2).2;
+
+ // Route a payment from A, through B, to C, then claim it on C. Once we pass B the
+ // `update_fulfill_htlc`+`commitment_signed` we have a monitor update for both of B's channels.
+ // We complete the commitment signed dance on the B<->C channel but leave the A<->B monitor
+ // update pending, then reload B. At that point, the final monitor update on the B<->C channel
+ // is still pending because it can't fly until the preimage is persisted on the A<->B monitor.
+ let (payment_preimage, payment_hash, ..) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1_000_000);
+
+ nodes[2].node.claim_funds(payment_preimage);
+ check_added_monitors(&nodes[2], 1);
+ expect_payment_claimed!(nodes[2], payment_hash, 1_000_000);
+
+ chanmon_cfgs[1].persister.set_update_ret(ChannelMonitorUpdateStatus::InProgress);
+ let cs_updates = get_htlc_update_msgs(&nodes[2], &nodes[1].node.get_our_node_id());
+ nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &cs_updates.update_fulfill_htlcs[0]);
+
+ // B generates a new monitor update for the A <-> B channel, but doesn't send the new messages
+ // for it since the monitor update is marked in-progress.
+ check_added_monitors(&nodes[1], 1);
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+
+ // Now step the Commitment Signed Dance between B and C and check that after the final RAA B
+ // doesn't let the preimage-removing monitor update fly.
+ nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &cs_updates.commitment_signed);
+ check_added_monitors(&nodes[1], 1);
+ let (bs_raa, bs_cs) = get_revoke_commit_msgs!(nodes[1], nodes[2].node.get_our_node_id());
+
+ nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_raa);
+ check_added_monitors(&nodes[2], 1);
+ nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_cs);
+ check_added_monitors(&nodes[2], 1);
+
+ let cs_final_raa = get_event_msg!(nodes[2], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id());
+ nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &cs_final_raa);
+ check_added_monitors(&nodes[1], 0);
+
+ // Finally, reload node B and check that after we call `process_pending_events` once we realize
+ // we've completed the A<->B preimage-including monitor update and so can release the B<->C
+ // preimage-removing monitor update.
+ let mon_ab = get_monitor!(nodes[1], chan_id_ab).encode();
+ let mon_bc = get_monitor!(nodes[1], chan_id_bc).encode();
+ let manager_b = nodes[1].node.encode();
+ reload_node!(nodes[1], &manager_b, &[&mon_ab, &mon_bc], persister, new_chain_monitor, nodes_1_deserialized);
+
+ if close_during_reload {
+ // Test that we still free the B<->C channel if the A<->B channel closed while we reloaded
+ // (as learned about during the on-reload block connection).
+ nodes[0].node.force_close_broadcasting_latest_txn(&chan_id_ab, &nodes[1].node.get_our_node_id()).unwrap();
+ check_added_monitors!(nodes[0], 1);
+ check_closed_broadcast!(nodes[0], true);
+ check_closed_event(&nodes[0], 1, ClosureReason::HolderForceClosed, false, &[nodes[1].node.get_our_node_id()], 100_000);
+ let as_closing_tx = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
+ mine_transaction_without_consistency_checks(&nodes[1], &as_closing_tx[0]);
+ }
+
+ let bc_update_id = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_id_bc).unwrap().2;
+ let mut events = nodes[1].node.get_and_clear_pending_events();
+ assert_eq!(events.len(), if close_during_reload { 2 } else { 1 });
+ expect_payment_forwarded(events.pop().unwrap(), &nodes[1], &nodes[0], &nodes[2], Some(1000), close_during_reload, false);
+ if close_during_reload {
+ match events[0] {
+ Event::ChannelClosed { .. } => {},
+ _ => panic!(),
+ }
+ check_closed_broadcast!(nodes[1], true);
+ }
+
+ // Once we run event processing the monitor should free, check that it was indeed the B<->C
+ // channel which was updated.
+ check_added_monitors(&nodes[1], if close_during_reload { 2 } else { 1 });
+ let post_ev_bc_update_id = nodes[1].chain_monitor.latest_monitor_update_id.lock().unwrap().get(&chan_id_bc).unwrap().2;
+ assert!(bc_update_id != post_ev_bc_update_id);
+
+ // Finally, check that there's nothing left to do on B<->C reconnect and the channel operates
+ // fine.
+ nodes[2].node.peer_disconnected(&nodes[1].node.get_our_node_id());
+ reconnect_nodes(ReconnectArgs::new(&nodes[1], &nodes[2]));
+ send_payment(&nodes[1], &[&nodes[2]], 100_000);
+}
+
+#[test]
+fn test_reload_mon_update_completion_actions() {
+ do_test_reload_mon_update_completion_actions(true);
+ do_test_reload_mon_update_completion_actions(false);
+}
projects / rust-lightning / blobdiff