The Redirect Uri is used during the Authorization Code Flow. The Redirect Uri must be of the following scheme:
<port> should be an available port. It is also possible to specify an additional path, e.g.
http://localhost:8080/redirect, but this is not required. It is important that this port is not used when generating the account configuration with oidc-gen. Multiple Redirect Uris can be registered to have a backup port if the first one may be already in use.
oidc-gen also supports a custom redirect scheme, that can be used to redirect directly to oidc-gen. In that case the redirect uri has to be of the form