udp.py 文件源码

python
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项目:llama 作者: dropbox 项目源码 文件源码
def tos_recvfrom(self, bufsize=512):
        """Mimic the behavior of socket.recvfrom() with special behavior.

        Args:
            bufsize: (int) number of bytes to read from socket
                     It's not advisable to change this.

        Returns:
            (UdpData) namedtuple containing timestamps
        """
        try:
            data, addr = self.recvfrom(bufsize)
            rcvd = time.time() * 1000
            results = UdpData._make(struct.unpack(self.FORMAT, data))
            rtt = rcvd - results.sent
            return results._replace(rcvd=rcvd, rtt=rtt, lost=False)
        except socket.timeout:
            logging.debug('Timed out after {}s waiting to receive'.format(
                self.gettimeout()))
            return UdpData(self.SIGNATURE, self._tos, 0, 0, 0, True)
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