There is any example application for authentication and authorization?

Hi all,
I have a k8s cluster with istio 1.12.1.
I was able to set up authentication and authorization using a keycloak server.

Using curl I’m able to:

  • access the keycloak server and obtain a jwt token
  • using the jwt token I can access variuos sevices
    • obtaining a 200 http return code if jwt is valid and role is authorized
    • obtaining a 403 http return code if jwt is valid and role is not authorized

Now I need to create and deploy a demo application that replicate the same behaviour.

Everything I tried ends up in passing the correct token to istio ingress but obtaining always a 403 http error code.

There is any example application to demostrate authentication and authorization with Istio?