}
check_added_monitors!(nodes[0], 1);
}
+
+#[derive(PartialEq)]
+enum TimeoutStep {
+ AfterShutdown,
+ AfterClosingSigned,
+ NoTimeout,
+}
+
+fn do_test_closing_signed_reinit_timeout(timeout_step: TimeoutStep) {
+ // The range-based closing signed negotiation allows the funder to restart the process with a
+ // new range if the previous range did not overlap. This allows implementations to request user
+ // intervention allowing users to enter a new fee range. We do not implement the sending side
+ // of this, instead opting to allow users to enter an explicit "willing to pay up to X to avoid
+ // force-closing" value and relying on that instead.
+ //
+ // Here we run test the fundee side of that restart mechanism, implementing the funder side of
+ // it manually.
+ let chanmon_cfgs = create_chanmon_cfgs(2);
+ let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
+ let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
+ let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+ let chan_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).2;
+
+ send_payment(&nodes[0], &[&nodes[1]], 8_000_000);
+
+ nodes[0].node.close_channel(&chan_id).unwrap();
+ let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
+ nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
+ let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
+ nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown);
+
+ {
+ // Now we set nodes[1] to require a relatively high feerate for closing. This should result
+ // in it rejecting nodes[0]'s initial closing_signed, giving nodes[0] a chance to try
+ // again.
+ let mut feerate_lock = chanmon_cfgs[1].fee_estimator.sat_per_kw.lock().unwrap();
+ *feerate_lock *= 10;
+ }
+
+ let mut node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
+ // nodes[0] should use a "reasonable" feerate, well under the 10 sat/vByte that nodes[1] thinks
+ // is the current prevailing feerate.
+ assert!(node_0_closing_signed.fee_satoshis <= 500);
+
+ if timeout_step != TimeoutStep::AfterShutdown {
+ nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
+ // At this point nodes[1] should send back a warning message indicating it disagrees with the
+ // given channel-closing fee. Currently we do not implement warning messages so instead we
+ // remain silent here.
+ assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
+
+ // Now deliver a mutated closing_signed indicating a higher acceptable fee range, which
+ // nodes[1] should happily accept and respond to.
+ node_0_closing_signed.fee_range.as_mut().unwrap().max_fee_satoshis *= 10;
+ {
+ let mut lock;
+ get_channel_ref!(nodes[0], lock, chan_id).closing_fee_limits.as_mut().unwrap().1 *= 10;
+ }
+ nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
+ let node_1_closing_signed = get_event_msg!(nodes[1], MessageSendEvent::SendClosingSigned, nodes[0].node.get_our_node_id());
+ nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed);
+ let node_0_2nd_closing_signed = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
+ if timeout_step == TimeoutStep::NoTimeout {
+ nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed.1.unwrap());
+ }
+ }
+
+ if timeout_step != TimeoutStep::NoTimeout {
+ assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
+ } else {
+ assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1);
+ }
+
+ nodes[1].node.timer_tick_occurred();
+ nodes[1].node.timer_tick_occurred();
+
+ let txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
+ assert_eq!(txn.len(), 1);
+ assert_eq!(txn[0].output.len(), 2);
+
+ if timeout_step != TimeoutStep::NoTimeout {
+ assert!((txn[0].output[0].script_pubkey.is_v0_p2wpkh() &&
+ txn[0].output[1].script_pubkey.is_v0_p2wsh()) ||
+ (txn[0].output[1].script_pubkey.is_v0_p2wpkh() &&
+ txn[0].output[0].script_pubkey.is_v0_p2wsh()));
+ check_closed_broadcast!(nodes[1], true);
+ check_added_monitors!(nodes[1], 1);
+ } else {
+ assert!(txn[0].output[0].script_pubkey.is_v0_p2wpkh());
+ assert!(txn[0].output[1].script_pubkey.is_v0_p2wpkh());
+
+ let events = nodes[1].node.get_and_clear_pending_msg_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
+ assert_eq!(msg.contents.flags & 2, 2);
+ },
+ _ => panic!("Unexpected event"),
+ }
+ }
+}
+
+#[test]
+fn test_closing_signed_reinit_timeout() {
+ do_test_closing_signed_reinit_timeout(TimeoutStep::AfterShutdown);
+ do_test_closing_signed_reinit_timeout(TimeoutStep::AfterClosingSigned);
+ do_test_closing_signed_reinit_timeout(TimeoutStep::NoTimeout);
+}
+
+fn do_simple_legacy_shutdown_test(high_initiator_fee: bool) {
+ // A simpe test of the legacy shutdown fee negotiation logic.
+ let chanmon_cfgs = create_chanmon_cfgs(2);
+ let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
+ let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
+ let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+
+ let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
+
+ if high_initiator_fee {
+ // If high_initiator_fee is set, set nodes[0]'s feerate significantly higher. This
+ // shouldn't impact the flow at all given nodes[1] will happily accept the higher fee.
+ let mut feerate_lock = chanmon_cfgs[0].fee_estimator.sat_per_kw.lock().unwrap();
+ *feerate_lock *= 10;
+ }
+
+ nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap();
+ let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
+ nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
+ let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
+ nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown);
+
+ let mut node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
+ node_0_closing_signed.fee_range = None;
+ if high_initiator_fee {
+ assert!(node_0_closing_signed.fee_satoshis > 500);
+ } else {
+ assert!(node_0_closing_signed.fee_satoshis < 500);
+ }
+
+ nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
+ let (_, mut node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
+ node_1_closing_signed.as_mut().unwrap().fee_range = None;
+
+ nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap());
+ let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
+ assert!(node_0_none.is_none());
+}
+
+#[test]
+fn simple_legacy_shutdown_test() {
+ do_simple_legacy_shutdown_test(false);
+ do_simple_legacy_shutdown_test(true);
+}
+
+#[test]
+fn simple_target_feerate_shutdown() {
+ // Simple test of target in `close_channel_with_target_feerate`.
+ let chanmon_cfgs = create_chanmon_cfgs(2);
+ let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
+ let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
+ let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+
+ let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
+ let chan_id = OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id();
+
+ nodes[0].node.close_channel_with_target_feerate(&chan_id, 253 * 10).unwrap();
+ let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id());
+ nodes[1].node.close_channel_with_target_feerate(&chan_id, 253 * 5).unwrap();
+ let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
+
+ nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown);
+ nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown);
+
+ let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
+ nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed);
+ let (_, node_1_closing_signed_opt) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
+ let node_1_closing_signed = node_1_closing_signed_opt.unwrap();
+
+ // nodes[1] was passed a target which was larger than the current channel feerate, which it
+ // should ignore in favor of the channel fee, as there is no use demanding a minimum higher
+ // than what will be paid on a force-close transaction. Note that we have to consider rounding,
+ // so only check that we're within 10 sats.
+ assert!(node_0_closing_signed.fee_range.as_ref().unwrap().min_fee_satoshis >=
+ node_1_closing_signed.fee_range.as_ref().unwrap().min_fee_satoshis * 10 - 5);
+ assert!(node_0_closing_signed.fee_range.as_ref().unwrap().min_fee_satoshis <=
+ node_1_closing_signed.fee_range.as_ref().unwrap().min_fee_satoshis * 10 + 5);
+
+ // Further, because nodes[0]'s target fee is larger than the `Normal` fee estimation plus our
+ // force-closure-avoidance buffer, min should equal max, and the nodes[1]-selected fee should
+ // be the nodes[0] only available fee.
+ assert_eq!(node_0_closing_signed.fee_range.as_ref().unwrap().min_fee_satoshis,
+ node_0_closing_signed.fee_range.as_ref().unwrap().max_fee_satoshis);
+ assert_eq!(node_0_closing_signed.fee_range.as_ref().unwrap().min_fee_satoshis,
+ node_0_closing_signed.fee_satoshis);
+ assert_eq!(node_0_closing_signed.fee_satoshis, node_1_closing_signed.fee_satoshis);
+
+ nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed);
+ let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
+ assert!(node_0_none.is_none());
+}
projects / rust-lightning / blobdiff