[keycloak-user] Establish session by ajax request

Is there any way to establish session with client (webapp with browser enabled authn, not a Bearer type) by XMLHttpRequest? I have central webapp which provide access to other services (restful). The problem is that when I login into central app I establish session with jsessionid connected to it. That works fine until I try to access other services. I have front-end as a single page (ExtJS) which issue XMLHttpRequest to service (separate web app in the same server). By the time I login into central app browser has its jsessionid, but to access other service, I need to establish another session and keycloak has to generate another jsessionid for me to access this service. And I can't get it supposedly because of XMLHttpRequest not a HttpRequest. For example, for this request (with jsessionid of central webapp): GET /rest/test HTTP/1.1 Host: localhost:8080 *X-Requested-With: XMLHttpRequest* Cookie: JSESSIONID=XAVXi... Connection: keep-alive Response is (I ommited some unimportant headers): *HTTP/1.1 401 Unauthorized* Expires: 0 Cache-Control: no-cache, no-store, max-age=0, must-revalidate X-Powered-By: Undertow/1 Server: WildFly/9 Pragma: no-cache Connection: keep-alive *WWW-Authenticate: Bearer realm="Unknown"* And when I change request to generic http, I got correct jsessionid and can access my rest service.