Loopback URI Redirection involves setting up:  %$%prettify
http://127.0.0.1:port or http://::1:port/% http://127.0.0.1:port or http://::1:port
You should query your platform for the relevant loopback IP, and start an HTTP listener on a random available port, Substitute port for the actual port number you are listening on.
- Windows desktop
- but not Universal Windows Platform apps.
- Register with type Other.
To receive the Authorization Code using this URL, your application must be listening on the local web server. This is possible on many, but not all, platforms. If your platform supports it this is the recommended mechanism for obtaining the Authorization Code.
Note: It is also possible to use localhost in place of the loopback IP, but this may cause issues with client firewalls. Most firewalls allow loopback communication, though this may not always be the case.
More Information#There might be more information for this subject on one of the following:
- [#1] - Using OAuth 2.0 for Mobile and Desktop Applications - based on information obtained 2016-07-05