classifier.py 文件源码

def set_fwd_socket(self, ip_adr):
        """
        Set classifier forward port base on the ip_adrr version provided

        :param ip_adr: IP address
        :type ip: str

        """
        ipver = self._get_current_ip_version(ip_adr)
        # logger.info('IP version for classifier forward socket is :"%s"', ipver)
        if ipver == 4:
            adrr_family = socket.AF_INET
        elif ipver == 6:
            adrr_family = socket.AF_INET6
        else:
            adrr_family = socket.AF_INET

        if self.fwd_socket != None:
            self.fwd_socket.close()

        self.fwd_socket = socket.socket(adrr_family, socket.SOCK_DGRAM)
        self.fwd_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

        logger.debug("Forward socket created in classifier with IP %s", ip_adr)
        # res = self.fwd_socket.getsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY)
        # logger.info('IPV6_V6ONLY set to :"%s"', res)
        # self.fwd_socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, 0)
        try:
            self.fwd_socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, 0)
        except (AttributeError, socket.error):
            # Apparently, the socket option is not available in
            # this machine's TCP stack
            logger.info("Apparently, the socket option is not available in this machine's TCP stack")
            pass