Google App Engine Twitter API Proxy (T Mode)

app.yaml

application: gtap
version: 1
runtime: python
api_version: 1

handlers:
- url: /t/.*
  script: main.py

main.py

#!/usr/bin/python
from google.appengine.api import urlfetch
from google.appengine.ext import webapp
from google.appengine.ext.webapp.util import run_wsgi_app

IGNORE_URLFETCH_HEADERS = ('accept-encoding', 'content-length', 'host', 'vary', 'via', 'x-forwarded-for')
IGNORE_RESPONSE_HEADERS = ('content-encoding', 'content-length', 'date' , 'server', 'transfer-encoding')

class BaseHandler(webapp.RequestHandler):
  _base_host = 'https://api.twitter.com/1/'

  def post(self, path):
    self.fetch('POST', path);
    
  def get(self, path):
    self.fetch('GET', path)
    
  def fetch(self, method, path):
    new_url = self._base_host + path
    if self.request.query_string:
      new_url += '?' + self.request.query_string
    new_headers = dict()
    for k in self.request.headers.keys():
      if k.lower() not in IGNORE_URLFETCH_HEADERS:
        new_headers[k] = self.request.headers.get(k)
    result = urlfetch.fetch(url=new_url, method=method, headers=new_headers, payload=self.request.body)
    self.response.set_status(result.status_code)
    for k,v in result.headers.iteritems():
      if k.lower() not in IGNORE_RESPONSE_HEADERS:
        self.response.headers.add_header(k, v)
    self.response.out.write(result.content)


class SearchHandler(BaseHandler):
  _base_host = 'https://search.twitter.com/'


if __name__ == "__main__":
  application = webapp.WSGIApplication([('/t/search/(.*)', SearchHandler),
                                        ('/t/(.*)', BaseHandler)])
  run_wsgi_app(application)

Use http://yourapp.appspot.com/t/ as Gravity Transport Mode