Google API OAuth for Drive API is not working. Getting Error: origin_mismatch

Question

I am trying to run the quick start code of Real Time API of Google Drive. I believe I did everything right. But I am getting

Error: origin_mismatch

Request Details

    openid_connect_request=true
    cookie_policy_enforce=false
    scope=https://www.googleapis.com/auth/drive.install https://www.googleapis.com/auth/drive.file https://www.googleapis.com/auth/plus.me
    response_type=token
    access_type=online
    redirect_uri=postmessage
    proxy=oauth2relay601571239
    origin=http://127.0.0.1
    state=811328575|0.818765953
    display=page
    client_id=XXXXXXXXXX

Answer 1

You haven't given much detail about your application architecture, so i can only suggest a general answer. OAuth restricts which URLs can be referred to it. The list of permitted URLs is configured in the API console at https://code.google.com/apis/console. The URL is very fussy, so make sure you enter it exactly as it appears in the address bar.

As at Oct 2013, you can't use localhost. You have 2 choices.

1. edit 127.0.0.1 = mydevserver.example.com into your /etc/hosts
2. use a url shortener (eg. goo.gl) to create an alias to localhost

However, I believe that it is now possible to configure localhost in the Google api console.