[Suggestion] Add a manual method to refresh the token for non-HTTP protocol usage

[xaphod]

Background: for non-HTTP protocols that use GTMAppAuth, e.g. SMTP->GMail, the GTMAppAuth method authorizeRequest: is not called, because it requires an HTTP-request as input. Instead, the access token is accessed directly via .authState.lastTokenResponse.accessToken and used in whatever payload (ie. SMTP).

Issue: the only way I see the accessToken getting refreshed using the refreshToken is if authorizeRequest: is called. This necessitates calling authorizeRequest: with a dummy HTTP-based NSMutableURLRequest, which is non-obvious (see #44 for at least one instance of someone getting snarled by this other than me), and feels weird.

Suggestion: either add a new method like refreshAccessTokenIfNeeded which will either no-op or refresh the accessToken if needed

Thanks.

[StevenEWright]

Hello! This library is an adapter for using AppAuth with GTM’s session fetcher. The functionality you’re looking for already exists in AppAuth. It sounds like maybe you don’t need or want this library.