Merge pull request lightningdevkit#4094 from TheBlueMatt/2025-09-no-disconnected-msgs

Stop enqueueing messages for disconnected peers

Author: tnull

lightning/src/ln/chanmon_update_fail_tests.rs

@@ -3897,7 +3897,7 @@ fn do_test_durable_preimages_on_closed_channel(
 		}
 	}
 	if !close_chans_before_reload {
-		check_closed_broadcast(&nodes[1], 1, true);
+		check_closed_broadcast(&nodes[1], 1, false);
 		let reason = ClosureReason::CommitmentTxConfirmed;
 		check_closed_event(&nodes[1], 1, reason, false, &[node_a_id], 100000);
 	}
@@ -3914,7 +3914,7 @@ fn do_test_durable_preimages_on_closed_channel(
 	check_spends!(bs_preimage_tx, as_closing_tx[0]);
 
 	mine_transactions(&nodes[0], &[&as_closing_tx[0], bs_preimage_tx]);
-	check_closed_broadcast(&nodes[0], 1, true);
+	check_closed_broadcast(&nodes[0], 1, false);
 	expect_payment_sent(&nodes[0], payment_preimage, None, true, true);
 
 	if !close_chans_before_reload || close_only_a {
@@ -4063,7 +4063,7 @@ fn do_test_reload_mon_update_completion_actions(close_during_reload: bool) {
 			Event::ChannelClosed { .. } => {},
 			_ => panic!(),
 		}
-		check_closed_broadcast!(nodes[1], true);
+		check_closed_broadcast(&nodes[1], 1, false);
 	}
 
 	// Once we run event processing the monitor should free, check that it was indeed the B<->C

lightning/src/ln/channel.rs

@@ -3886,6 +3886,12 @@ where
 		self.is_usable() && !self.channel_state.is_peer_disconnected()
 	}
 
+	/// Returns true if the peer for this channel is currently connected and we're not waiting on
+	/// `channel_reestablish` messages to re-init the channel.
+	pub fn is_connected(&self) -> bool {
+		!self.channel_state.is_peer_disconnected()
+	}
+
 	/// Returns false if our last broadcasted channel_update message has the "channel disabled" bit set
 	pub fn is_enabled(&self) -> bool {
 		self.is_usable()