解决Dropbox中国无法及时自动同步的问题

dropbox.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

'''
参考：解决Dropbox中国无法及时自动同步的问题
http://www.chinagfw.org/2012/04/dropbox.html

ping notify17.dropbox.com => 199.47.218.150

/etc/hosts:
127.0.0.1 notify17.dropbox.com

sudo python3 dropbox.py # need to listen on port 80
'''

import logging

from tornado.ioloop import IOLoop
from tornado.httpclient import AsyncHTTPClient
from tornado.web import Application, RequestHandler, asynchronous
from tornado.options import parse_command_line


class HomeHandler(RequestHandler):
    def get(self):
        self.set_header('Content-Type', 'text/plain')
        self.write('Hello from Tornado!')


class NotifyHandler(RequestHandler):
    @asynchronous
    def get(self):
        self.set_header('Content-Type', 'text/plain')
        url = 'http://199.47.218.150' + self.request.uri
        logging.info(url)
        client = AsyncHTTPClient()
        client.fetch(url, self.handle_response, request_timeout=100.0)

    def handle_response(self, response):
        if response.error:
            logging.info('can not connect.')
            self.write('{\'ret\': \'new\'}')
        else:
            logging.info('connect successfully: %s', response.body)
            self.write(response.body)
        self.finish()


def main():
    parse_command_line() # enable_pretty_logging
    application = Application([
            (r'/subscribe', NotifyHandler),
            (r'/.*', HomeHandler),
        ], debug=True)
    application.listen(80)
    IOLoop.instance().start()

if __name__ == '__main__':
    main()