asp.net – 手动更新表单认证券：

问题：
在我的webconfig我有如下：

<authentication mode="Forms">
        <forms timeout="20" name="SqlAuthCookie" protection="All" slidingExpiration="true" />
    </authentication>
    <sessionState timeout="20" />
    <authorization>

只有当20分钟内没有请求时,用户才能注销并重定向到login.aspx.问题是用户正在发出请求,仍然被抛出到登录页面.这不应该发生.我想到的是为每个请求手动重置SqlAuthCookie.

以下是我的代码它在context.AcquireRequestState上调用.

void context_AcquireRequestState(object sender,EventArgs e)
    {
        HttpContext ctx = HttpContext.Current;
        ResetAuthCookie(ctx);
     }

            private void ResetAuthCookie(HttpContext ctx)
    {
        HttpCookie authCookie = ctx.Request.Cookies[FormsAuthentication.FormsCookieName];
        if (authCookie == null)
            return;

        FormsAuthenticationTicket ticketOld = FormsAuthentication.Decrypt(authCookie.Value);
        if (ticketOld == null)
            return;

        if (ticketOld.Expired)
            return;

        FormsAuthenticationTicket ticketNew = null;
        if (FormsAuthentication.SlidingExpiration)
           ticketNew = FormsAuthentication.RenewTicketIfOld(ticketOld);

        if (ticketNew != ticketOld)
            StoreNewCookie(ticketNew,authCookie,ctx);
    }

    private void StoreNewCookie(FormsAuthenticationTicket ticketNew,HttpCookie authCookie,HttpContext ctx)
    {
        string hash = FormsAuthentication.Encrypt(ticketNew);
        if (ticketNew.IsPersistent)
            authCookie.Expires = ticketNew.Expiration;

        authCookie.Value = hash;
        authCookie.HttpOnly = true;

        ctx.Response.Cookies.Add(authCookie);
    }

我的问题是：

>是错误还是可接受的解决方案,重置每个请求的cookie？
>为什么还不行？看来新机票永远不会更新.
>是否有其他原因可能,因为用户的表单验证过期太快,我应该调查？

谢谢,
问候,