OAuth ‚Authorization Code‘ authentication via certificate

[jdcheesy]

Hello,
we were able to create a script for the 'Client Credentials' flow that allows authentication via certificats. Now we would also like to use certificates in the 'Authorization Code' flow. However, we were not able to realize this via script.
The problem is to read the response with the redirect url without starting a webserver.

Has anyone already been able to implement this or has any ideas? I was wondering how bruno solves this with the built-in function.

Many thanks for your help!