ping_icmp.py 文件源码

def ping_once(self, dest_addr, timeout, sequence):
        icmp = socket.getprotobyname('icmp')

        try:
            icmp_socket = socket.socket(socket.AF_INET, socket.SOCK_RAW, icmp)
        except socket.error, (errno, msg):
            if errno == 1:
                msg = '%s : Just root can send ICMP Message' % msg
                raise socket.error(msg)
            raise

        packet_id = os.getpid() & 0xFFFF

        self.__send_icmp_request(icmp_socket, dest_addr, packet_id, sequence)
        delay = self.__receive_icmp_response(icmp_socket, packet_id, timeout)

        icmp_socket.close()
        return delay