encode.py 文件源码

def build_trace_req_header(oam_type, sil, remote_ip, remote_port):
    trace_req_header_values = TRACEREQHEADER()
    trace_req_header_values.oam_type = oam_type
    trace_req_header_values.sil = sil
    trace_req_header_values.port = int(remote_port)

    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    s.connect((remote_ip, trace_req_header_values.port))
    # print(s.getsockname()[0])
    src_addr = ipaddress.ip_address(s.getsockname()[0])
    if src_addr.version == 4:
        trace_req_header_values.ip_1 = 0x00000000
        trace_req_header_values.ip_2 = 0x00000000
        trace_req_header_values.ip_3 = 0x0000FFFF
        trace_req_header_values.ip_4 = int(ipaddress.IPv4Address(src_addr))
    elif src_addr.version == 6:
        int_addr6 = int(ipaddress.IPv6Address(src_addr))
        trace_req_header_values.ip_1 = int_addr6 >> 96
        trace_req_header_values.ip_2 = (int_addr6 >> 64) & 0x0FFFFFFFF
        trace_req_header_values.ip_3 = (int_addr6 >> 32) & 0x0FFFFFFFF
        trace_req_header_values.ip_4 = int_addr6 & 0x0FFFFFFFF

    return trace_req_header_values