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python-network-application:pycurl

Python PycURL 网络编程

在使用urllib的时候经常会死掉,以前debug过,是没有设置 timing out 所以超时后就会死掉。
PycURL是curl的python库,虽然有些curl的功能没有实现,但是还是很强劲的。

curl是非常强劲的一个工具,
google内部用它来 debug GDATA API. Using cURL to interact with Google data services

可以去 http://pycurl.sourceforge.net/ 下载最新的PycURL。

简单的PycURL例子

import pycurl
import StringIO
 
url = "http://www.google.com/"
crl = pycurl.Curl()
crl.setopt(pycurl.VERBOSE,1)
crl.setopt(pycurl.FOLLOWLOCATION, 1)
crl.setopt(pycurl.MAXREDIRS, 5)
crl.fp = StringIO.StringIO()
crl.setopt(pycurl.URL, url)
crl.setopt(crl.WRITEFUNCTION, crl.fp.write)
crl.perform()
print crl.fp.getvalue()

PycURL 自动处理cookie

import pycurl
import StringIO
 
url = "http://www.google.com/"
crl = pycurl.Curl()
crl.setopt(pycurl.VERBOSE,1)
crl.setopt(pycurl.FOLLOWLOCATION, 1)
crl.setopt(pycurl.MAXREDIRS, 5)
crl.fp = StringIO.StringIO()
crl.setopt(pycurl.URL, url)
crl.setopt(crl.WRITEFUNCTION, crl.fp.write)
 
# Option -b/--cookie <name=string/file> Cookie string or file to read cookies from
# Note: must be a string, not a file object.
crl.setopt(pycurl.COOKIEFILE, "cookie_file_name")
 
# Option -c/--cookie-jar <file> Write cookies to this file after operation
# Note: must be a string, not a file object.
crl.setopt(pycurl.COOKIEJAR, "cookie_file_name")
 
crl.perform()
print crl.fp.getvalue()

PycURL 实现POST方法

import pycurl
import StringIO
import urllib
 
url = "http://www.google.com/"
post_data_dic = {"name":"value"}
crl = pycurl.Curl()
crl.setopt(pycurl.VERBOSE,1)
crl.setopt(pycurl.FOLLOWLOCATION, 1)
crl.setopt(pycurl.MAXREDIRS, 5)
#crl.setopt(pycurl.AUTOREFERER,1)
 
crl.setopt(pycurl.CONNECTTIMEOUT, 60)
crl.setopt(pycurl.TIMEOUT, 300)
#crl.setopt(pycurl.PROXY,proxy)
crl.setopt(pycurl.HTTPPROXYTUNNEL,1)
#crl.setopt(pycurl.NOSIGNAL, 1)
crl.fp = StringIO.StringIO()
crl.setopt(pycurl.USERAGENT, "dhgu hoho")
 
# Option -d/--data <data>   HTTP POST data
crl.setopt(crl.POSTFIELDS,  urllib.urlencode(post_data_dic))
 
crl.setopt(pycurl.URL, url)
crl.setopt(crl.WRITEFUNCTION, crl.fp.write)
crl.perform()
 
print crl.fp.getvalue()

urllib 超时设置

import socket
socket.setdefaulttimeout(5.0)
python-network-application/pycurl.txt · 最后更改: 2010/06/02 01:18 (外部编辑)