public void SetPrincipal(Controller controller, ISession session)
{
var state = session.Serialize();
var authTicket = new FormsAuthenticationTicket(1, "userNameGoesHere", DateTime.UtcNow, DateTime.MaxValue, true, state, "CallWallAuth");
var encTicket = FormsAuthentication.Encrypt(authTicket);
var faCookie = new HttpCookie(FormsAuthentication.FormsCookieName, encTicket);
controller.Response.Cookies.Add(faCookie);
}