protected void Application_AuthenticateRequest(object sender, EventArgs e)
    {
        if (Request.IsAuthenticated)
        {
            // check if we have the user in the cache
            var userPrincipal = PrincipalManager.GetPrincipal();
            if (userPrincipal == null || !userPrincipal.Identity.IsAuthenticated)
            {
                userPrincipal = new GenericPrincipal(new RoomixerIdentity(), null);

                PrincipalManager.StorePrincipal(userPrincipal);
            }


            HttpContext.Current.User = userPrincipal;
        }
    }