的CookieContainer错误？的CookieContainer错误？(CookieConta

我很困惑的CookieContainer如何处理域，所以我创建了这个测试。该测试显示的CookieContainer不返回任何cookie中“example.com”但根据RFC它应该返回至少2块饼干。

是不是一个错误？

如何使其工作？

这是一个关于此错误的讨论：

http://social.msdn.microsoft.com/Forums/en-US/ncl/thread/c4edc965-2dc2-4724-8f08-68815cf1dce6

<%@ Page Language="C#" %>

<%@ Import Namespace="System.Net" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
    CookieContainer getContainer()
    {
        CookieContainer result = new CookieContainer();

        Uri uri = new Uri("http://sub.example.com");
        string cookieH = @"Test1=val; domain=sub.example.com; path=/";
        result.SetCookies(uri, cookieH);

        cookieH = @"Test2=val; domain=.example.com; path=/";
        result.SetCookies(uri, cookieH);

        cookieH = @"Test3=val; domain=example.com; path=/";
        result.SetCookies(uri, cookieH);

        return result;
    }

    void Test()
    {
        CookieContainer cookie = getContainer();
        lblResult.Text += "<br>Total cookies count: " + cookie.Count + " &nbsp;&nbsp; expected: 3";

        Uri uri = new Uri("http://sub.example.com");
        CookieCollection coll = cookie.GetCookies(uri);
        lblResult.Text += "<br>For " + uri + " Cookie count: " + coll.Count + " &nbsp;&nbsp; expected: 2";

        uri = new Uri("http://other.example.com");
        coll = cookie.GetCookies(uri);
        lblResult.Text += "<br>For " + uri + " Cookie count: " + coll.Count + " &nbsp;&nbsp; expected: 2";

        uri = new Uri("http://example.com");
        coll = cookie.GetCookies(uri);
        lblResult.Text += "<br>For " + uri + " Cookie count: " + coll.Count + " &nbsp;&nbsp; expected: 2";

    }

    protected void Page_Load(object sender, EventArgs e)
    {
        Test();
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>CookieContainer Test Page</title>
</head>
<body>
    <form id="frmTest" runat="server">
    <asp:Label ID="lblResult" EnableViewState="false" runat="server"></asp:Label>
    </form>
</body>
</html>

Answer 1:

我刚刚找到了修复这个错误，并在这里讨论： http://dot-net-expertise.blogspot.com/2009/10/cookiecontainer-domain-handling-bug-fix.html

这里是解决方案：

不要使用。新增（饼干），只能使用。新增（URI，饼干）方法。

呼叫BugFix_CookieDomain每次添加一个cookie的容器或使用.GetCookie之前或系统之前使用的容器。

 private void BugFix_CookieDomain(CookieContainer cookieContainer) { System.Type _ContainerType = typeof(CookieContainer); Hashtable table = (Hashtable)_ContainerType.InvokeMember("m_domainTable", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.GetField | System.Reflection.BindingFlags.Instance, null, cookieContainer, new object[] { }); ArrayList keys = new ArrayList(table.Keys); foreach (string keyObj in keys) { string key = (keyObj as string); if (key[0] == '.') { string newKey = key.Remove(0, 1); table[newKey] = table[keyObj]; } } }

Answer 2:

最后，他们会解决它： https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=478521

Answer 3:

//bug fix, exists only in 3.5 FW, please wrap it with defines
//http://dot-net-expertise.blogspot.com/2009/10/cookiecontainer-domain-handling-bug-fix.html
if(!value.Contains("://www.")) //we are going to hit the bug
{
    string urlWWW = value.Replace("://", "://www.");
    Uri uriWWW = new Uri(urlWWW);
    foreach (Cookie c in _cookieContainer.GetCookies(uriWWW))
        if (c.Domain.StartsWith("."))
            request.Headers["Cookies"] += c.Name + "=" + c.Value + ";"; //manually add the cookies
}
//~bug fix

Answer 4:

失去了我的一天这个问题。 CallMeLaNN的回应并没有帮我（我使用.NET 4.5）。在我的情况下，问题是在设置要求和设置饼干体的顺序。

在这种情况下的cookie不会被发送到服务器：

            var response = (HttpWebRequest)WebRequest.Create("http://localhost:4433/");

            using (var requestStream = response.GetRequestStream())
            {
               using (var streamWriter = new StreamWriter(requestStream))
               {
                    requestStream.Write(RequestContent);
               }
            }

            response.CookieContainer.Add(new Cookie("Name", "Value"));
            await response.GetResponseAsync();

为了使工作变动需要的顺序：

            var response = (HttpWebRequest)WebRequest.Create("http://localhost:4433/");

            response.CookieContainer.Add(new Cookie("Name", "Value"));
            await response.GetResponseAsync();

            using (var requestStream = response.GetRequestStream())
            {
               using (var streamWriter = new StreamWriter(requestStream))
               {
                    requestStream.Write(RequestContent);
               }
            }

Answer 5:

我创建了这个问题，在Windows 10 / UWP / .NET应用程序的核心工程修复。问题是，对于内部CookieContainer是不同的，但同样糟糕，因为他们是在.NET Framework正确。所以接受的解决方案不工作了。

但是，而不是“固定”了CookieContainer ，我只是写了一个版本GetCookies()是获取所有的饼干与字符串特定的域，不管他们的“安全”状态，或者如果它们与一个点前缀。欢迎您认为适合您的需要来修改它，我会看到越来越版本的它在未来的.NET核心发布实施。

using System.Collections.Generic;
using System.Reflection;

namespace System.Net
{

    /// <summary>
    /// Contains extensions for the <see cref="CookieContaner"/> class.
    /// </summary>
    public static class CookieContainerExtensions
    {

        /// <summary>
        /// Uses Reflection to get ALL of the <see cref="Cookie">Cookies</see> where <see cref="Cookie.Domain"/> 
        /// contains part of the specified string. Will return cookies for any subdomain, as well as dotted-prefix cookies. 
        /// </summary>
        /// <param name="cookieContainer">The <see cref="CookieContainer"/> to extract the <see cref="Cookie">Cookies</see> from.</param>
        /// <param name="domain">The string that contains part of the domain you want to extract cookies for.</param>
        /// <returns></returns>
        public static IEnumerable<Cookie> GetCookies(this CookieContainer cookieContainer, string domain)
        {
            var domainTable = GetFieldValue<dynamic>(cookieContainer, "_domainTable");
            foreach (var entry in domainTable)
            {
                string key = GetPropertyValue<string>(entry, "Key");

                if (key.Contains(domain))
                {
                    var value = GetPropertyValue<dynamic>(entry, "Value");

                    var internalList = GetFieldValue<SortedList<string, CookieCollection>>(value, "_list");
                    foreach (var li in internalList)
                    {
                        foreach (Cookie cookie in li.Value)
                        {
                            yield return cookie;
                        }
                    }
                }
            }
        }

        /// <summary>
        /// Gets the value of a Field for a given object instance.
        /// </summary>
        /// <typeparam name="T">The <see cref="Type"/> you want the value to be converted to when returned.</typeparam>
        /// <param name="instance">The Type instance to extract the Field's data from.</param>
        /// <param name="fieldName">The name of the Field to extract the data from.</param>
        /// <returns></returns>
        internal static T GetFieldValue<T>(object instance, string fieldName)
        {
            BindingFlags bindFlags = BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static;
            FieldInfo fi = instance.GetType().GetField(fieldName, bindFlags);
            return (T)fi.GetValue(instance);
        }

        /// <summary>
        /// Gets the value of a Property for a given object instance.
        /// </summary>
        /// <typeparam name="T">The <see cref="Type"/> you want the value to be converted to when returned.</typeparam>
        /// <param name="instance">The Type instance to extract the Property's data from.</param>
        /// <param name="propertyName">The name of the Property to extract the data from.</param>
        /// <returns></returns>
        internal static T GetPropertyValue<T>(object instance, string propertyName)
        {
            var pi = instance.GetType().GetProperty(propertyName);
            return (T)pi.GetValue(instance, null);
        }

    }

}