trex_stl_packet_builder_scapy.py 文件源码

def is_valid_ipv4(ip_addr):
    """
    Return buffer in network order
    """
    if  type(ip_addr) == bytes and len(ip_addr) == 4:
        return ip_addr

    if  type(ip_addr)== int:
        ip_addr = socket.inet_ntoa(struct.pack("!I", ip_addr))

    try:
        return socket.inet_pton(socket.AF_INET, ip_addr)
    except AttributeError:  # no inet_pton here, sorry
        return socket.inet_aton(ip_addr)
    except socket.error:  # not a valid address
        raise CTRexPacketBuildException(-10,"Not valid ipv4 format");