Token not invalidating

[dmaier]

Tokens can become invalid several ways, only one of which is the expiration time. See this page for details: https://developers.facebook.com/blog/post/2011/05/13/how-to--handle-expired-access-tokens/

There exist cases in the ANE such that a user's token can become invalid but the library doesn't think it is invalid. Then using the token can cause problems since it's not valid. Is there any way to check more than just the expiration time to know if a token is valid?

[titi-us]

No. You have to "manually" check after each call to facebook that the token is still valid. If it's not, you will receive a OAuthException. Then you have to logout and login your user.

[dmaier]

Got it. Slightly annoying but this is a facebook problem, not yours. Thanks

[sscholle]

@dmaier Can you show me an example of how to work around this issue?