base.py 文件源码

def enablePktInfo(self, flag=1):
        if (not hasattr(self.socket, 'sendmsg') or
                not hasattr(self.socket, 'recvmsg')):
            raise error.CarrierError('sendmsg()/recvmsg() interface is not supported by this OS and/or Python version')

        try:
            if self.socket.family in (socket.AF_INET, socket.AF_INET6):
                self.socket.setsockopt(socket.SOL_IP, socket.IP_PKTINFO, flag)
            if self.socket.family == socket.AF_INET6:
                self.socket.setsockopt(socket.SOL_IPV6, socket.IPV6_RECVPKTINFO, flag)
        except socket.error:
            raise error.CarrierError('setsockopt() for %s failed: %s' % (self.socket.family == socket.AF_INET6 and "IPV6_RECVPKTINFO" or "IP_PKTINFO", sys.exc_info()[1]))

        self._sendto = sockmsg.getSendTo(self.addressType)
        self._recvfrom = sockmsg.getRecvFrom(self.addressType)

        debug.logger & debug.flagIO and debug.logger('enablePktInfo: %s option %s on socket %s' % (self.socket.family == socket.AF_INET6 and "IPV6_RECVPKTINFO" or "IP_PKTINFO", flag and "enabled" or "disabled", self.socket.fileno()))
        return self