我在使用 HttpWebRequest 时处理 cookie 时遇到问题。
我正在制作一个程序来管理我在一个小型社区网站上的帐户。我能够发出获取和发布请求（成功登录等），但我无法维护会话 cookie 以保持登录状态。
我的代码如下所示：
this.cookies = new CookieCollection();
request = (HttpWebRequest)WebRequest.Create(requestURL);
request.CookieContainer = new CookieContainer();
...
request.CookieContainer.Add(cookies);
ASCIIEncoding encodage = new System.Text.ASCIIEncoding();
byte[] data = encodage.GetBytes(Post);
request.AllowAutoRedirect = true;
request.ContentType = "application/x-www-form-urlencoded";
request.UserAgent = "whatever";
request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
request.Method = "POST";
request.Headers.Add("Accept-Encoding", "gzip,deflate,sdch");
request.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
request.AllowWriteStreamBuffering = true;
request.ContentLength = data.Length;
newStream = request.GetRequestStream();
request.ProtocolVersion = HttpVersion.Version11;
newStream.Write(data, 0, data.Length);
...
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
this.cookies = response.Cookies;
...
response.Cookies 始终为空（长度：0），它不应该。谁能告诉我做错了什么？为什么没有与响应关联的 cookie？提前致谢