Wholeton Python Authenticate Client

#!/usr/bin/python
# -*- coding: utf-8 -*-

import sys
import socket
from datetime import datetime
from uuid import getnode
import urllib
try:
    import urllib2
except Exception:
    from urllib import request as urllib2
try:
    import Cookie as cookies
except Exception:
    from http import cookies
import websocket
import json

wholeton_host = '192.168.1.254'
wholeton_user = 'test'
wholeton_pass = '123456'
wholeton_ip = ''
wholeton_mac = ''
update_secs = 28800

def url_encode(obj):
    try:
        return urllib.urlencode(obj)
    except Exception:
        return urllib.parse.urlencode(obj)

def get_ip():
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    try:
        s.connect(('10.255.255.255', 1))
        IP = s.getsockname()[0]
    except Exception:
        IP = '127.0.0.1'
    finally:
        s.close()
    return IP

def get_mac():
    return ':'.join(("%012x" % getnode())[i:i+2] for i in range(0, 12, 2))

if not wholeton_ip:
    wholeton_ip = get_ip()

if not wholeton_mac:
    wholeton_mac = get_mac()

uri_keys = { 'id' : 0, 'url' : 'mail.126.com', 'user' : wholeton_ip, 'mac' : wholeton_mac }
uri_data = url_encode(uri_keys).replace('%3A', ':')

auth_data = url_encode({ 'param[UserName]' : wholeton_user, 'param[UserPswd]' : wholeton_pass, 'uri' : uri_data, 'force' : 0 })
# convert for python 3
if sys.version_info[0] == 3:
    auth_data = auth_data.encode('ascii')

ws = None
loop = True

try:
    while loop:
        resp = urllib2.urlopen('http://' + wholeton_host + '/user-login-auth?' + uri_data, timeout = 5, data = auth_data)

        # get session cookie
        cookie = cookies.SimpleCookie()
        cookie.load(resp.info()['Set-Cookie'])

        resp_data = resp.read()
        if resp_data:
            print('Login response:')
            print(resp_data)

        ws = websocket.WebSocket()
        ws.connect('ws://' + wholeton_host + '/go-ws/user-auth', cookie = 'fms_session=' + cookie.get('fms_session').value, origin = 'http://' + wholeton_host)

        dt_start = datetime.now()
        while ws:
            try:
                ws_data = ws.recv()
            except KeyboardInterrupt:
                loop = False
                break
            except:
                break

            if ws_data:
                dt_now = datetime.now()
                if (dt_now - dt_start).seconds >= update_secs:
                    break

                print(dt_now)
                print(ws_data)

                ws_obj = json.loads(ws_data)
                if ws_obj and ws_obj["type"] == "logged-out":
                    break

        if ws:
            ws.close()
        ws = None
except KeyboardInterrupt:
    pass

if ws:
    ws.close()