Fitbit OAuth2 flow requires authorization headers for all requests. Currently, OAuth2Client doesn't sign all requests and also doesn't use custom headers being provided.
This fix is backwards compatible and doesn't change behavior unless custom headers have been set.
Fitbit OAuth2 flow requires authorization headers for all requests. Currently, OAuth2Client doesn't sign all requests and also doesn't use custom headers being provided.
This fix is backwards compatible and doesn't change behavior unless custom headers have been set.