Python cache proxy for Etienne

proxy.py

# Originally from 
# http://sharebear.co.uk/blog/2009/09/17/very-simple-python-caching-proxy/
#
# Usage:
# A call to http://localhost:80000/http://example.com/foo.html will cache the file
# at http://example.com/foo.html on disc and not redownload it again. 
# To clear the cache simply do a `rm *.cached`. To stop the server simply
# send SIGINT (Ctrl-C). It does not handle any headers or post data. 
# Improved with love by @dimtion and @tikiki

# Version: 0.2
# Add: possibility to cache multiple domains, see : cache_spread

# TODO
# Handle HTTP POST REQUESTS
# Handle other protocols such as DNS, webSocket etc...


import BaseHTTPServer
import hashlib
import os
import urllib2
 
class CacheHandler(BaseHTTPServer.BaseHTTPRequestHandler):

    cache_spread = ('srv956.sd-france.net','go.microsoft.com')
    def do_GET(self):
      m = hashlib.md5()
      m.update(self.path)
      cache_filename = 'cached/'+m.hexdigest() + ".cached"
      if os.path.exists(cache_filename):
          print "Cache hit"
          data = open(cache_filename).readlines()
      else:
          print "Cache miss"
          print self.path
          data = urllib2.urlopen(self.path).readlines()
          if any(serv in self.path for serv in self.cache_spread):
              print "To cache"
              open(cache_filename, 'wb').writelines(data)
      self.send_response(200)
      self.end_headers()
      self.wfile.writelines(data)
          
 
def run():
    server_address = ('', 8000)
    httpd = BaseHTTPServer.HTTPServer(server_address, CacheHandler)
    httpd.serve_forever()
 
if __name__ == '__main__':
    print("-- Server starts --")
    run()