counterparty_max_commitment_tx_output: Mutex<(u64, u64)>,
last_sent_closing_fee: Option<(u64, Signature)>, // (fee, holder_sig)
- closing_fee_limits: Option<(u64, u64)>,
target_closing_feerate_sats_per_kw: Option<u32>,
/// If our counterparty sent us a closing_signed while we were waiting for a `ChannelMonitor`
/// closing_signed message and handling it in `maybe_propose_closing_signed`.
pending_counterparty_closing_signed: Option<msgs::ClosingSigned>,
+ /// The minimum and maximum absolute fee we are willing to place on the closing transaction.
+ /// These are set once we reach `closing_negotiation_ready`.
+ #[cfg(test)]
+ pub(crate) closing_fee_limits: Option<(u64, u64)>,
+ #[cfg(not(test))]
+ closing_fee_limits: Option<(u64, u64)>,
+
/// The hash of the block in which the funding transaction was included.
funding_tx_confirmed_in: Option<BlockHash>,
funding_tx_confirmation_height: u32,
}
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);
+}
projects / rust-lightning / commitdiff