[basex-talk] Tomcat and UserPrincipal

Hi all, when deploying a BaseX RestXQ module as a Tomcat webapp in a container that uses embedded realm based authentication is there any way to retrieve the login name after being redirected to the protected page? I remember back in J2EE times there was a dedicated method getUserPrincipal. Is there any equivalent using "request:"? Thanks as usual for any kind support! Marco.