udp.py 文件源码

def tos_sendto(self, ip, port):
        """Mimic the behavior of socket.sendto() with special behavior.

        Note: Data is excluded from arguments since we encode our own.

        Args:
            ip: (str) destination IP address
            port: (int) destination UDP port

        Returns:
            (int) the number of bytes sent on the socket
        """
        return self.sendto(struct.pack(self.FORMAT, self.SIGNATURE, self._tos,
                                       time.time() * 1000, 0, 0, False),
                           (ip, port))