Created
February 3, 2012 02:57
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tornado http proxy
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#!/usr/bin/env python | |
#coding:utf-8 | |
import sys, os, re | |
import logging | |
import socket | |
import urlparse | |
from tornado import iostream, ioloop | |
from tornado.httpserver import HTTPServer | |
from tornado import httputil | |
logging.basicConfig(level=logging.INFO, format='%(levelname)s - - %(asctime)s %(message)s', datefmt='[%d/%b/%Y %H:%M:%S]') | |
class LocalProxyHandler(object): | |
def __init__(self, request): | |
self.request = request | |
scheme, netloc, path, params, query, fragment = urlparse.urlparse(self.request.uri, 'http') | |
self.remote_host, self.remote_port = self.resolve_netloc(netloc) | |
self.remote_path = urlparse.urlunparse((scheme, self.remote_host + ('' if self.remote_host == 80 else ':%d' % self.remote_port), path, params, query, '')) | |
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0) | |
self.remote_stream = iostream.IOStream(sock) | |
self.remote_stream.connect((self.remote_host, self.remote_port), self._on_remote_connect) | |
def resolve_netloc(self, netloc): | |
try: | |
host, _, port = netloc.rpartition(':') | |
return host, int(port) | |
except ValueError: | |
return netloc, 80 | |
def _on_remote_connect(self): | |
logging.info('remote address (%r, %r) connected.', self.remote_host, self.remote_port) | |
data ='%s %s %s\r\n' % (self.request.method, self.remote_path, self.request.version) | |
self.request.headers['Connection'] = 'close' | |
self.request.headers['Proxy-Connection'] = 'close' | |
data += ''.join('%s: %s\r\n' % (k, v) for k,v in self.request.headers.get_all()) | |
data += '\r\n' | |
self.remote_stream.write(data, self._on_remote_write) | |
def _on_remote_write(self): | |
logging.info('remote address (%r, %r) send data end.', self.remote_host, self.remote_port) | |
self.remote_stream.read_until('\r\n\r\n', self._on_remote_read_headers) | |
def _on_remote_read_headers(self, data): | |
logging.info('remote address (%r, %r) read headers end.', self.remote_host, self.remote_port) | |
eol = data.find('\r\n') | |
self.remote_headers = httputil.HTTPHeaders.parse(data[eol:]) | |
self.request.connection.write(data, self._on_local_write_headers) | |
def _on_local_write_headers(self): | |
logging.info('remote address (%r, %r) to local write headers end.', self.remote_host, self.remote_port) | |
if self.remote_headers.get('connection') == 'close': | |
self.remote_stream.read_until_close(self._on_remote_read_body) | |
elif 'content-length' in self.remote_headers: | |
self.remote_stream.read_bytes(int(self.remote_headers['content-length']), self._on_remote_read_body) | |
else: | |
self.remote_stream.read_until_close(self._on_remote_read_body) | |
def _on_remote_read_body(self, data): | |
logging.info('remote address (%r, %r) read finish.', self.remote_host, self.remote_port) | |
self.request.write(data) | |
self.request.finish() | |
def main(): | |
http_server = HTTPServer(LocalProxyHandler, no_keep_alive=True) | |
http_server.listen(8888) | |
ioloop.IOLoop.instance().start() | |
if __name__ == '__main__': | |
main() |
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