Python网络编程基础笔记-域名解析程序

               
               
                # -*- coding: cp936 -*-
"""域名解析程序"""
import sys,socket
"""
输入参数：
host, port [, family, socktype, proto, flags]
host:www.baidu.com
port:80
family:AF_INET
socktype:socket.STREAM
proto:default 0
flags:
输出参数为tuple的列表，即一个域名可以对应多个ip
family：AF_INET,AF_UNIX...
socktype:STREAM，DGRAM
proto：0
canonname：
sockaddr：xxx.xxx.xxx.xxx
"""
host = "www.baidu.com"
print socket.getaddrinfo(host,None)
print socket.getaddrinfo(host,"http")
print socket.getaddrinfo(host,"http",socket.AF_INET)
print socket.getaddrinfo(host,"http",socket.AF_INET,socket.SOCK_STREAM)
"""
输出结果
[(2, 0, 0, '', ('202.108.22.5', 0)), (2, 0, 0, '', ('202.108.22.43', 0))]
[(2, 1, 0, '', ('202.108.22.5', 80)), (2, 1, 0, '', ('202.108.22.43', 80))]
[(2, 1, 0, '', ('202.108.22.5', 80)), (2, 1, 0, '', ('202.108.22.43', 80))]
[(2, 1, 0, '', ('202.108.22.5', 80)), (2, 1, 0, '', ('202.108.22.43', 80))]
"""