google-api-php-client apiAuthException刷新OAuth2

Question

I'm developing a PHP script to display a page with some charts and stats about my Analytics profile. I'm sending 3 or 4 ajax asynchronous calls to the server; the server then fetch data using google-api-php-client . There are about 10 requests to Google for each page refresh.

The problem is i'm getting totally random exceptions from the api:

Fatal error: Uncaught exception 'apiAuthException' with message 'Error refreshing the OAuth2 token, message: ' in apiOAuth2.php on line 242

One time i successfully get the data, one time not. This is very annoying because i cannot find why . What could be? The asynch calls maybe?

User quota is set to 1000 requests/second just to be sure. Eventually i get 'User quota exceded' from the api, something quite impossible.

Answer 1

I answer to myself because i found the problem (was my bad):

• I store the access token into an encrypted file
• Even if the access token should be offline it's not really offline : it expires but contains a refresh token that APIs will send to get a new fresh access token
• The new access token should be saved again into the file (i save it into __destruct() method of my wrapper class) and used for the next request (i was not saving it!)