Cookiecontainer中的cookie，以便给的错误？
https://stackoverflow.com/questions/1047669
-
20-08-2019 - |
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我很困惑如何cookiecontainer中的cookie，以便给处理领域，所以我创建这个测试。这一试验显示了cookiecontainer中的cookie，以便给不返回的任何cookie"example.com"但是，根据RFC它应该返回的至少2饼干。
是不是一个错误？
如何使它的工作？
这里是一个讨论关于这个错误：
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 + " expected: 3";
Uri uri = new Uri("http://sub.example.com");
CookieCollection coll = cookie.GetCookies(uri);
lblResult.Text += "<br>For " + uri + " Cookie count: " + coll.Count + " expected: 2";
uri = new Uri("http://other.example.com");
coll = cookie.GetCookies(uri);
lblResult.Text += "<br>For " + uri + " Cookie count: " + coll.Count + " expected: 2";
uri = new Uri("http://example.com");
coll = cookie.GetCookies(uri);
lblResult.Text += "<br>For " + uri + " Cookie count: " + coll.Count + " 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>
解决方案
我刚刚发现修复这个错误，并讨论了这里: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。添加(Cookie)，只能使用。添加(尤里，Cookie)的方法。
呼叫BugFix_CookieDomain每次增加一个饼干的容器或 在你之前使用。GetCookie或前的系统使用的容器。
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]; } } }
其他提示
//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
忘记我一天这个问题。 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将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();
要使它工作改变顺序是必需的：
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);
}
}
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CookieContainer的内部是不同的，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。
但不是“固定”的CookieContainer，我只是写了一个版本GetCookies()的是得到所有的饼干与字符串特定的域，不管他们的“安全”状态，或者如果它们前面加上一个点。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);
}
}
}
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