helpers.py 文件源码

def lhost():
    """
    Return the local IP.

    """

    if os.name != "nt":
        import fcntl
        import struct

        def get_interface_ip(ifname):
            try:
                s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
                return socket.inet_ntoa(fcntl.ioctl(
                        s.fileno(),
                        0x8915,  # SIOCGIFADDR
                        struct.pack('256s', ifname[:15])
                    )[20:24])
            except IOError:
                return ""

    ip = ""
    try:
        ip = socket.gethostbyname(socket.gethostname())
    except socket.gaierror:
        pass
    except:
        print "Unexpected error:", sys.exc_info()[0]
        return ip

    if (ip == "" or ip.startswith("127.")) and os.name != "nt":
        interfaces = ["eth0", "eth1", "eth2", "wlan0", "wlan1", "wifi0", "ath0", "ath1", "ppp0"]
        for ifname in interfaces:
            try:
                ip = get_interface_ip(ifname)
                if ip != "":
                    break
            except:
                print "Unexpected error:", sys.exc_info()[0]
                pass
    return ip