Is this legit? @RequestScoped vs HttpServletRequest

[Kirys]

I'm am making some experiments
and I've written this cdi called from within a jsf page
but I get a nullpointer exception is that a valid setup or is not legit 
to get HttpServletRequest from within a request scoped cdi?

Thank You

Details follow:

Apache Tomcat (TomEE)/7.0.68 (1.7.4) (plumee)

CDI code extract

@Named
@RequestScoped
public class UserProfileManager implements Serializable {

    @Context
    private ServletContext context;

    @Context
    private HttpServletRequest request;
    @Context
    private HttpServletResponse response;

    public LoggedUser getUser() {
        Enumeration<String> names= request.getAttributeNames(); //null 
pointer exception here -> request is not null
        /* other not relevant code */

    }


}