How to handle CORS for analytics super proxy?

[Anand Mani Sankar]

Hi,

I'm trying to make a call from my web app to the super proxy app that I have deployed in app engine. I realize that this is a cross origin request and would not go through. What is the approach to solve this problem and be able to get data from the super proxy app?

Thanks,

Anand

[Sheldon Ketterer]

Hey, you may have solved this by now, but for future reference: 

You have to add a response header in the BaseHandler class (see base.py) with either a wildcard or specific domains you want to whitelist. You can do that with this:

self.response.headers.add_header('Access-Control-Allow-Origin', '*')

Then you can just send a GET request and parse the response.

[Gregor Srdic]

Additionally, I had to add the following to get it working from Angular $resource (I guess it's required for ajax as well):

within class PublicQueryResponseHandler(base.BaseHandler):

  def options(self):      
        self.response.headers['Access-Control-Allow-Origin'] = '*'
        self.response.headers['Access-Control-Allow-Headers'] = 'Origin, X-Requested-With, Content-Type, Accept, Authorization'
        self.response.headers['Access-Control-Allow-Methods'] = 'POST, GET, PUT, DELETE'