gossip: Added message to notify gossipd of outpoint spends

Signed-off-by: Christian Decker <decker.christian@gmail.com>

gossipd/gossip.c

@@ -1987,6 +1987,13 @@ handle_mark_channel_unroutable(struct io_conn *conn,
 	return daemon_conn_read_next(conn, &daemon->master);
 }
 
+static struct io_plan *handle_outpoint_spent(struct io_conn *conn,
+					     struct daemon *daemon,
+					     const u8 *msg)
+{
+	return daemon_conn_read_next(conn, &daemon->master);
+}
+
 static struct io_plan *recv_req(struct io_conn *conn, struct daemon_conn *master)
 {
 	struct daemon *daemon = container_of(master, struct daemon, master);
@@ -2044,6 +2051,9 @@ static struct io_plan *recv_req(struct io_conn *conn, struct daemon_conn *master
 	case WIRE_GOSSIPCTL_PEER_DISCONNECT:
 		return disconnect_peer(conn, daemon, master->msg_in);
 
+	case WIRE_GOSSIP_OUTPOINT_SPENT:
+		return handle_outpoint_spent(conn, daemon, master->msg_in);
+
 	/* We send these, we don't receive them */
 	case WIRE_GOSSIPCTL_RELEASE_PEER_REPLY:
 	case WIRE_GOSSIPCTL_RELEASE_PEER_REPLYFAIL:

gossipd/gossip_wire.csv

@@ -225,6 +225,9 @@ gossipctl_peer_disconnect_reply,3123
 gossipctl_peer_disconnect_replyfail,3223
 gossipctl_peer_disconnect_replyfail,,isconnected,bool
 
+# master -> gossipd: a potential funding outpoint was spent, please forget the eventual channel
+gossip_outpoint_spent,3024
+gossip_outpoint_spent,,short_channel_id,struct short_channel_id
 
 # gossip_store messages: messages persisted in the gossip_store
 gossip_store_channel_announcement,4096

lightningd/gossip_control.c

@@ -133,6 +133,7 @@ static unsigned gossip_msg(struct subd *gossip, const u8 *msg, const int *fds)
 	case WIRE_GOSSIP_SEND_GOSSIP:
 	case WIRE_GOSSIP_GET_TXOUT_REPLY:
 	case WIRE_GOSSIP_DISABLE_CHANNEL:
+	case WIRE_GOSSIP_OUTPOINT_SPENT:
 	case WIRE_GOSSIP_ROUTING_FAILURE:
 	case WIRE_GOSSIP_MARK_CHANNEL_UNROUTABLE:
 	case WIRE_GOSSIPCTL_PEER_DISCONNECT: