重用 CookieContainer 时如何确定会话超时

发布于 2024-07-25 14:44:34 字数 1383 浏览 17 评论 0原文

我有以下代码，它重复使用 CookieContainer，该 CookieContainer 在第一个请求时登录，但仅使用 cookie 容器来处理之后的请求。

一段时间后，如果空闲，站点将给出会话超时，我将需要再次执行登录。

问：我可以（使用 cookie 容器对象）确定是否发生超时，或者最好从恰好包含“会话超时”等文本的 HttpWebResponse 确定是否发生超时。做这个的最好方式是什么？

        private static CookieContainer _cookieContainer;
    private static CookieContainer CurrentCookieContainer
    {
        get
        {
            if (_cookieContainer == null || _cookieContainer.Count == 0)
            {
                lock (_lock)
                {
                    if (_cookieContainer == null || _cookieContainer.Count == 0)
                    {
                        //_cookieContainer.GetCookies(
                        _cookieContainer = DoLogin();
                    }
                }
            }

            return _cookieContainer;
        }
        set
        {
            _cookieContainer = value;
        }
    }

然后这个方法调用容器：

        public static string SomeMethod(SomeParams p)
        {
            HttpWebRequest request_thirdPartyEnquiryDetails = (HttpWebRequest)WebRequest.Create(thirdPartyEnquiryDetails);
            CookieContainer cookieContainer = CurrentCookieContainer;
            request_thirdPartyEnquiryDetails.CookieContainer = cookieContainer;
//... and it goes on to submit a search and return the response
        }

原文

I have the following code which re-uses a CookieContainer which logs in on the first request, but just uses the cookie container for requests after.

After a period of time if idle the site will give a Session Timeout, I will need to perform the login again.

Q: Can I determine (with the cookie container object) if the timeout has happened or is it best to determine if it has happened from the HttpWebResponse which happens to contains text like 'session timeout'. What is the best way to do this?

        private static CookieContainer _cookieContainer;
    private static CookieContainer CurrentCookieContainer
    {
        get
        {
            if (_cookieContainer == null || _cookieContainer.Count == 0)
            {
                lock (_lock)
                {
                    if (_cookieContainer == null || _cookieContainer.Count == 0)
                    {
                        //_cookieContainer.GetCookies(
                        _cookieContainer = DoLogin();
                    }
                }
            }

            return _cookieContainer;
        }
        set
        {
            _cookieContainer = value;
        }
    }

And then this method calls out to the container:

        public static string SomeMethod(SomeParams p)
        {
            HttpWebRequest request_thirdPartyEnquiryDetails = (HttpWebRequest)WebRequest.Create(thirdPartyEnquiryDetails);
            CookieContainer cookieContainer = CurrentCookieContainer;
            request_thirdPartyEnquiryDetails.CookieContainer = cookieContainer;
//... and it goes on to submit a search and return the response
        }

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浅听莫相离 2024-08-01 14:44:34

好吧，由于超时时间是 30 分钟，所以我将登录设置为 25 分钟后重复登录。

private static DateTime? lastLoggedIn;

    private static CookieContainer _cookieContainer;
    private static CookieContainer CurrentCookieContainer
    {
        get
        {
            if (_cookieContainer == null || _cookieContainer.Count == 0 || !lastLoggedIn.HasValue || lastLoggedIn.Value.AddMinutes(25) < DateTime.Now)
            {
                lock (_lock)
                {
                    if (_cookieContainer == null || _cookieContainer.Count == 0 || !lastLoggedIn.HasValue || lastLoggedIn.Value.AddMinutes(25) < DateTime.Now)
                    {
                        _cookieContainer = DoLogin();
                        lastLoggedIn = DateTime.Now;
                    }                        
                }
            }

            return _cookieContainer;
        }
        set
        {
            _cookieContainer = value;
        }
    }

作为额外的预防措施，我检查 HttpResponse 中是否有页面会话超时时返回的文本（尽管现在预计这不会被看到）。如果发生这种情况，我将 lastLoggedIn 日期设置为 null 并再次运行搜索方法。

Well, since the timeout is 30 mins, I have set the login to repeat after 25 mins.

private static DateTime? lastLoggedIn;

    private static CookieContainer _cookieContainer;
    private static CookieContainer CurrentCookieContainer
    {
        get
        {
            if (_cookieContainer == null || _cookieContainer.Count == 0 || !lastLoggedIn.HasValue || lastLoggedIn.Value.AddMinutes(25) < DateTime.Now)
            {
                lock (_lock)
                {
                    if (_cookieContainer == null || _cookieContainer.Count == 0 || !lastLoggedIn.HasValue || lastLoggedIn.Value.AddMinutes(25) < DateTime.Now)
                    {
                        _cookieContainer = DoLogin();
                        lastLoggedIn = DateTime.Now;
                    }                        
                }
            }

            return _cookieContainer;
        }
        set
        {
            _cookieContainer = value;
        }
    }

As an extra precaution, I check the HttpResponse for the text which returns when the page session times out (although its now expected this won't be seen). If this happens I set the lastLoggedIn date to null and run the search method again.

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