def __send_message_async(port, message=""):
        """ Sends a given message to a given port and immediately returns. """
        sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
        try:
            sock.sendto(message.encode("utf-8"), ("127.0.0.1", port))
        finally:
            sock.close()
 Sends a given message to a given port and immediately returns. 
metadrive/render_pipeline/rpcore/util/network_communication.py