Cookie在HttpWebRequest GetReponse上丢失/丢失

Question

偶尔，我的程序在创建HTTP Post时似乎会失败。我把范围缩小到一块曲奇显然丢了。

一些调查，我缩小了范围

HttpWebResponse response = (HttpWebResponse)http.GetResponse();

奇怪的是，这种情况并不总是发生，通常在第一次运行此方法时，然后一切正常(在我强制重新添加此cookie之后)。

我似乎已经共同破解了一个适用于这种情况的解决方案(但我担心它会打破其他情况，就像通常的破解解决方案一样)。

var cookiesPrePull = cookies.GetCookies(http.RequestUri);
HttpWebResponse response = (HttpWebResponse)http.GetResponse();
foreach (Cookie cookiePre in cookiesPrePull)
{
    bool bExist = false;
    foreach (Cookie cookiePost in cookies.GetCookies(http.RequestUri))
    {
        if (cookiePre.Name == cookiePost.Name)
        {
            bExist = true;
            break;
        }
    }
    if (!bExist)
    {
        cookies.Add(cookiePre);
    }
}

我试图理解的是为什么GetResponse调用会丢弃cookie。在Fiddler中检查时，对此cookie只字不提。唯一的cookie代码是设置两个cookie。一个已经存在，一个不存在。

曲奇肯定还没过期。我对此完全不知所措

干杯

Answer 1

尝试使用这样的CookieCollection和CookieContainer来维护您的cookies：

CookieContainer container = new CookieContainer();
CookieCollection cookies = new CookieCollection();

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://somesite.com/login");
request.CookieContainer = container;

HttpWebResponse response = (HttpWebResponse)request.GetResponse();
cookies = response.Cookies; // capture the cookies from the response

request = (HttpWebRequest)WebRequest.Create("http://somesite.com/profile");
request.CookieContainer = container;
request.CookieContainer.Add(cookies); // add cookies from the previous response to the new request

response = (HttpWebResponse)request.GetResponse();
cookies = response.Cookies; // capture the cookies from the response