Retrieving refresh token using oauth2 on Google Contacts API version 3.0

Question

I am using oauth2 (node.js and the connect-oauth library) to connect to the google contacts API version 3.0.

Doing so, I get a response such as:

{ access_token : "...",
"token_typen": "Bearer",
"expires_in" : 3600,
"id_token": "..." }

I am missing the refresh token used to get a new access token as soon as the latter is expired.

options for oauth2

{ host: 'accounts.google.com',
  port: 443,
  path: '/o/oauth2/token',
  method: 'POST',
  headers: 
   { 'Content-Type': 'application/x-www-form-urlencoded',
     Host: 'accounts.google.com',
     'Content-Length': 247 } }

post-body 'redirect_uri=http%3A%2F%2Flocalhost%2Foauth2callback&grant_type=authorization_code&client_id=CLIENTID&client_secret=CLIENTSECRET&type=web_server&code=4%2F3gbiESZTEOjiyFPLUhKfE_a_jr8Q'

NOTE: I tried to add approval_prompt=force from a similar question to the request-post_body but this resulted in an Error

{ statusCode: 400, data: '{\n  "error" : "invalid_request"\n}' }

Antonio Saco Antonio Saco · Accepted Answer · 2012-04-13T16:19:26

NOTE: I tried to add approval_prompt=force from a similar question to the request-post_body but this resulted in an Error

You don't need the approval_prompt param when you ask for a token. The *approval_prompt* param is for the authorization part.

I am missing the refresh token...

The only way you DON'T get a *refresh_token* is when:

use the Client-side Applications flow;
include the access_type=online param in the authorization code request.

So, try adding: access_type=offline, to the authorization code request.

Edit:

i.e.:

https://accounts.google.com/o/oauth2/auth?client_id=**your_client_id**&scope=https://www.googleapis.com/auth/plus.me&redirect_uri=http://localhost&response_type=code&access_type=offline

If you're getting 400 is because you are adding an invalid parameter or missing one.

Good luck!

Retrieving refresh token using oauth2 on Google Contacts API version 3.0

2 Answers