可以替换掉网页某个文件的代理

用twisted写一个替换掉网站上某个文件的代理，作用参见http://lifesinger.org/blog/?p=40 “如何直接调试线上页面的JavaScript和CSS”这篇文章，有了这个就不用fidder了，而且使用更加方便，替换时把要把原来的文件的content-length这个header去掉：

from twisted.web import http

from twisted.web import proxy

from twisted.internet import reactor

from twisted.python import log

import sys

log.startLogging(sys.stdout)



rpl_urls ={

"http://g.cn/" : "g.cn.html",

}

urls = rpl_urls

#import config

#urls = config.rpl_urls



class rpl_Proxy(proxy.Proxy):

def __init__(self):

log.msg("hey, rpl_proxy init")

proxy.Proxy.__init__(self)

self.requestFactory = rpl_ProxyRequest



class rpl_ProxyRequest(proxy.ProxyRequest):

def __init__(self, channel, queued, reactor=reactor):

log.msg("hey, rpl_ProxyRequest init")

proxy.ProxyRequest.__init__(self, channel, queued, reactor)



def process(self):

log.msg("url:",self.uri)

if self.uri in urls:

filename = urls[self.uri]

fd = open( filename, "rb" )

self.transport.write( fd.read() )

self.transport.loseConnection()

else:

proxy.ProxyRequest.process(self)



class ProxyFactory(http.HTTPFactory):

def __init__(self):

http.HTTPFactory.__init__(self)

self.protocol = rpl_Proxy



if __name__ == '__main__':

"""

written by karlzheng; http://blog.csdn.net/zhengkarl

"""

reactor.listenTCP(8080, ProxyFactory())

reactor.run()



#http://wiki.python.org/moin/Twisted-Examples

http://bbs.superlinux.cn/viewthread.php?tid=2560&extra=page%3D1&frombbs=1