[undertow-dev] "unauthenticatedIndentity" in Undertow

Hi guys, I try to sort out the "unauthenticatedIdentity" feature for JAS login modules in WildFly 8. To my understanding, when logging in without username/password, the login module should fallback to this "unauthenticatedIndentity", which can only access public content (e.g. unsecured or @PermitAll ejb methods). But without a login, my public ejb method shows that "this.sessionContext.getCallerPrincipal().getName()" returns "anonymous", which is NOT the "unauthenticatedIdentity" value. And "httpRequest.login(null, null)" will fail because of the Undertow implementation. How can a switch to the user name declared in the "unauthenticatedIdentity"? Same question e.g. here: https://community.jboss.org/thread/237899 Seems I have a basic misunderstanding about this ;-), but I don't find a clear explanation in the web... Best regards Wolfgang Knauf