版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/qq_34777982/article/details/82501734
#dns轮询
import dns.resolver
import os
import http.client
#定义域名ip列表
iplist = []
#定义业务域名
domain_app ='www.baidu.com'
#域名解析函数
def get_ipList(domain=''):
#解析A记录
try:
A = dns.resolver.query(domain, 'A')
except Exception as e:
print('dns resolver error'+str(e))
return
for i in A.response.answer:
for j in i.items:
iplist.append(j)
return True
def checkip(ip):
check_url = str(ip) +':80'
get_content = ''
#定义http连接超时5秒
http.client.socket.setdefaulttimeout(5)
#创建连接对象
conn = http.client.HTTPConnection(check_url)
try:
#发起url请求 添加host主机头部
conn.request('GET', '/', headers={'Host':domain_app})
r = conn.getresponse()
#获取url页面前15字符
get_content = r.read(15)
finally:
if get_content== '<!doctype html>':
print(str(ip) + '[OK]')
else:
print(str(ip) + '[error]')
if __name__ == '__main__':
if get_ipList(domain_app) and len(iplist)>0:
for ip in iplist:
checkip(ip)
else:
print('dns resolver error')