#!/usr/bin/python

import dns.resolver, os, httplib

iplist = []

appdomain = "cdsendmail.ecwise.com"

def checkip(ip):

checkurl = ip + ":80"getcontent = ""httplib.socket.setdefaulttimeout(5)conn = httplib.HTTPConnection(checkurl)

try:            conn.request("GET","/",headers = {"host": appdomain})            r = conn.getresponse()            getcontent = r.read(15)            print(getcontent)    finally:            if getcontent == "

def getip(domain):

try:a = dns.resolver.query(domain, 'A')except Exception as E:print "dns resolve error"+str(E)return 0for i in a.response.answer:for j in i.items:iplist.append(j.address)print iplistreturn True

if name == "main":

if getip(appdomain) and len(iplist) > 0:for ip in iplist:checkip(ip)else:print "dns resolve error!"