Note that I couldn't thoroughly test this because oauthbin.com doesn't seem to exist anymore. I run some other tests by mocking the interceptor to verify logic works.

thanks for the PR and the last commit
I do not know when PR
If you want I could merge now but you must do another PR when finally Alamofire will do a real release ...

I think the last commit does not specify the dependency requirements correctly. Let me fix that first.

yes maybe for carthage too

Ok, should be good to merge now. I'll issue another PR when Alamofire 5.0 is released.

Any idea what happened to oauthbin.com?

maybe down
I am looking for alternative
https://code-examples.net/en/q/35c905 maybe http://term.ie/oauth/example/index.php

I make a new pr, updating carthage and travis file without a macOS so I do not really see the code running ut if this could help
https://travis-ci.org/OAuthSwift/OAuthSwiftAlamofire/jobs/581809211