Add an Event for sending revoke_and_ack messages out-of-band

Author: TheBlueMatt

src/ln/peer_handler.rs

@@ -869,6 +869,17 @@ impl<Descriptor: SocketDescriptor> PeerManager<Descriptor> {
 						Self::do_attempt_write_data(&mut descriptor, peer);
 						continue;
 					},
+					Event::SendRevokeAndACK { ref node_id, ref msg } => {
+						log_trace!(self, "Handling SendRevokeAndACK event in peer_handler for node {} for channel {}",
+								log_pubkey!(node_id),
+								log_bytes!(msg.channel_id));
+						let (mut descriptor, peer) = get_peer_for_forwarding!(node_id, {
+								//TODO: Do whatever we're gonna do for handling dropped messages
+							});
+						peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 133)));
+						Self::do_attempt_write_data(&mut descriptor, peer);
+						continue;
+					},
 					Event::SendShutdown { ref node_id, ref msg } => {
 						log_trace!(self, "Handling Shutdown event in peer_handler for node {} for channel {}",
 								log_pubkey!(node_id),

src/util/events.rs

@@ -125,6 +125,15 @@ pub enum Event {
 		/// The update messages which should be sent. ALL messages in the struct should be sent!
 		updates: msgs::CommitmentUpdate,
 	},
+	/// Used to indicate that a revoke_and_ack message should be sent to the peer with the given node_id.
+	///
+	/// This event is handled by PeerManager::process_events if you are using a PeerManager.
+	SendRevokeAndACK {
+		/// The node_id of the node which should receive this message
+		node_id: PublicKey,
+		/// The message which should be sent.
+		msg: msgs::RevokeAndACK,
+	},
 	/// Used to indicate that a shutdown message should be sent to the peer with the given node_id.
 	///
 	/// This event is handled by PeerManager::process_events if you are using a PeerManager.