FormsAuthentication与Session超时时间不一的解决方法

public class CheckSessionModule: IHttpModule
{
    public void Init(HttpApplication app)
    {
        ctx.Application.AcquireRequestState += this.OnAcquireRequestState;
    }
    public void Dispose() {}
    public void OnAcquireRequestState(Object sender, EventArgs args)
    {
        if ((HttpContext.Current.User.Identity.IsAuthenticated == true) &&

(HttpContext.Current.Session.IsNewSession == true))
        {
            FormsAuthentication.SignOut();
            HttpContext.Current.Response.Redirect(HttpContext.Current.Request.Url.ToString(), false);
            HttpContext.Current.ApplicationInstance.CompleteRequest();
        }
    }
}