python网络编程 — HTTP客户端

A simple http client.

It gets the contents of special webserver page and print it.(Default path is "/")

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#!/usr/share/env python #coding:utf-8   import argparse import httplib   #设置默认访问url和端口 REMOTE_SERVER_HOST='www.python.org' REMOTE_SERVER_PATH='/'     class HTTPClient(object):     """         docstring for HTTPClient         Eg: python HTTPClient.py --host=www.iana.org 　　　　　　  python HTTPClient.py --host=www.iana.org --path='/domains/reserved'     """     def __init__(self, host):         self.host = host       def fetch(self,path):         http = httplib.HTTP(self.host)           #设置请求头信息         http.putrequest("GET",path)         http.putheader("User-Agent",__file__)         http.putheader("Host",self.host)         http.putheader("Accept","*/*")         http.endheaders()           try:             #getreply方法返回service code ,service reseason,RFC82 headers             errcode,errmsg,headers = http.getreply()         except Exception,e:             print "Client failed code: %s message: %s headers: %s" %(errcode,errmsg,headers)         else:             print "Got homepage from %s" %self.host               #打印获取的内容             file = http.getfile()             return file.read()   if __name__ == '__main__':     parse = argparse.ArgumentParser(description='HTTP Client Example')     parse.add_argument('--host',action="store",dest="host",default=REMOTE_SERVER_HOST)     parse.add_argument('--path',action="store",dest="path",default=REMOTE_SERVER_PATH)     given_args = parse.parse_args()     host,path = given_args.host,given_args.path     client = HTTPClient(host)     print client.fetch(path)