(Very) Simple AppEngine python XHR proxy

app.yaml

application: <YOUR_APPSPOT.COM_NAME>
version: 1
runtime: python27
api_version: 1
threadsafe: yes
default_expiration: "30d"


handlers:
- url: /_xhr
  script: xhr_proxy.app
  
- url: /static
  static_dir: static
  
# site root
- url: /
  static_files: static/index.html
  upload: static/index.html
  expiration: "15m"

xhr_proxy.py

# Modified from: https://w00kie.com/2008/06/18/crossdomain-proxy-on-google-app-engine/
#
# Usage w/ jQuery:
# $.ajax({
#   type: 'GET', 
#   url: '/_xhr', 
#   data: {
#     url: 'https://plus.google.com/108057472278845204990'
#   }, 
#   success: function (resp) {
#     console.log($(resp).find('img[alt="Cover photo"]'));
#   }
# });

import cgi
import webapp2
from google.appengine.api import urlfetch

class XHR(webapp2.RequestHandler):
  def get(self):
    url = self.request.get('url')
    if url:
      result = urlfetch.fetch(url=url, method=urlfetch.GET)
      self.response.out.write(result.content)

app = webapp2.WSGIApplication([('/_xhr', XHR)],
                              debug=True)