Gevent based proxy server for non http compliant webserver

proxy.py

from gevent.local import local
from gevent.pywsgi import WSGIServer
from gevent import monkey
import socket
import pprint
import sys


def application(environ, start_response):
    url = environ['PATH_INFO']
    
    if url.endswith('/') or url.endswith('.html'):
        content_type = 'text/html'
    elif url.endswith('.cab'):
        content_type = 'application/vnd.ms-cab-compressed'
    elif url.endswith('.png'):
        content_type = 'image/png'
    elif url.endswith('.gif'):
        content_type = 'image/gif'
    elif url.endswith('.jpeg'):
        content_type = 'image/jpeg'
    elif url.endswith('.css'):
        content_type = 'text/css'
    elif url.endswith('.favicon'):
        content_type = 'image/x-icon'
    elif url.endswith('.js'):
        content_type = 'application/javascript'
    else:
        raise RuntimeError('Unknown mimetype for %r' % url)

    start_response(
        '200 OK',
        [('Content-Type', content_type)]
    )

    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.connect(('1.2.3.4', 80))
    s.sendall('GET %(PATH_INFO)s HTTP/1.0\r\n' % environ)

    data = s.recv(1024)
    while data:
        sys.stdout.write('.')
        if data.startswith('HTTP'):
            data = data.split('\r\n\r\n', 1)[1]

        yield data
        data = s.recv(1024)


socket.setdefaulttimeout(2.0)
WSGIServer(('', 8080), application).serve_forever()