How to use on_auth_fail?

[timeimp]

Hi all!

Just wondering how to use the on_auth_fail part of this gem?

I understand that it requires a Proc or method to invoke, but would someone be able to direct me as to the best practice when using this?

Currently we can re-authorise the token in question, but we're not sure how the current session gets the new credentials before proceeding with an operation.

Cheers, timeimp