room create 메시지 전송

wshandler/wshandler.go

@@ -339,6 +339,7 @@ func (sh *subhandler) mainLoop(ctx context.Context) {
 			room = makeRoom(name, roomDestroyChan)
 			rooms[name] = room
 			room.start(ctx)
+			go sh.callReceiver.OnRoomCreated(sh.region, name)
 		}
 		return room
 	}