帮助.NET CookieContainer

Question

我最近遇到了CookieContainer的一些问题.要么我做了严重的错误,要么有一些与CookieContainer对象有关的错误.它似乎没有使用某些Set-Cookie标头更新cookie集合.

这可能是一个冗长的帖子,我道歉,但我希望尽可能多,所以我将列出我的HTTP嗅探日志以及我的实际实现代码.

    public bool SendRequest(HttpWebRequest request, IDictionary<string, string> data, int retries)
    {
        // copy request in case request instance already failed
        HttpWebRequest newRequest = (HttpWebRequest)HttpWebRequest.Create(request.RequestUri);
        newRequest.Method = request.Method;

        // if POST data was provided, write it to the stream
        if (data != null && data.Count != 0)
        {
            StreamWriter writer = new StreamWriter(newRequest.GetRequestStream());
            writer.Write(createPostString(data));
            writer.Close();
        }

        // set request with global cookie container
        newRequest.CookieContainer = this.cookieJar;

        try
        {
            using (HttpWebResponse resp = (HttpWebResponse)newRequest.GetResponse())
            {
                //CookieCollection newCooks = getCookies(resp.Headers);
                //updateCookies(newCooks);
                this.cookieJar = newRequest.CookieContainer;
                this.Html = getResponseString(resp);

             /* remainder snipped */

所以有代码,这里有两个我在Fiddler中嗅到的回复请求:

---

要求1

POST /login/ HTTP/1.1
Host: www.site.com
Content-Length: 47
Expect: 100-continue
Connection: Keep-Alive

回应1

HTTP/1.1 200 OK
Date: Wed, 02 Dec 2009 17:03:35 GMT
Server: Apache
Set-Cookie: tcc=one; path=/
Set-Cookie: cust_id=2702585226; domain=.site.com; path=/; expires=Mon, 01-Jan-2011 00:00:00 GMT
Set-Cookie: cust_session=12%2F2%2F2009%20%2012%3A3%3A35; domain=.site.com; path=/; expires=Wed 2-Dec-2009  17:33:35
Set-Cookie: refer_id_persistent=0000; domain=.site.com; path=/; expires=Fri 2-Dec-2011  17:3:35
Set-Cookie: refer_id=0000; domain=.site.com; path=/
Set-Cookie: private_browsing_mode=off; domain=.site.com; path=/; expires=Fri, 01-Jan-2010 17:03:35 GMT
Set-Cookie: member_session=UmFuZG9tSVYL%5BS%5D%5BP%5DfhH77bYaVoS9j9Yd8ySRkyHHz%5BS%5Dk0S8MVsQ6AyraNlcdcCRC0RkB%5BP%5DfBYVM4vn6JQ3HlJxT3GlJi1RZiMGQaITg7HN9dpu9oRbZgMjhJlXXa%5BP%5D7pFSjqDIZWRr3LAfnhh3btv4E3rvVH42CeOP%5BS%5Dx6kDyvrokQEHyIHPGi7zswZbuHrUdx2XKEKKJzw1unDWfw0LZWjoehAs0QgSOz6Nzp8P4Hp8hqrULdIMch6acPT%5BS%5DbKV8zwugBIcjr5dI3rVR%5BP%5Dv42rsTtQB7dyb%5BP%5DRKb8Y83cGqhHM33hP%5BP%5DUtmbDC1PPfr%5BS%5DPC23lAO%5BS%5DmQ3mOy9x4pgQSOfp40XSfzgVg3EavITaxHBeI5nO3%5BP%5D%5BS%5D2rSDthDfuEm4sT9i6UF3sYd1vlOL0IC9ZsVatV1yhhpQ%5BE%5D%5BE%5D; domain=.site.com; path=/; expires=Fri, 01-Jan-2010 17:03:35 GMT
Connection: close
Transfer-Encoding: chunked
Content-Type: text/html; charset=UTF-8

要求2

GET /test?search=jjkjf HTTP/1.1
Host: www.site.com
Cookie: tcc=one; cust_id=2702585226; private_browsing_mode=off; member_session=UmFuZG9tSVYL%5BS%5D%5BP%5DfhH77bYaVoS9j9Yd8ySRkyHHz%5BS%5Dk0S8MVsQ6AyraNlcdcCRC0RkB%5BP%5DfBYVM4vn6JQ3HlJxT3GlJi1RZiMGQaITg7HN9dpu9oRbZgMjhJlXXa%5BP%5D7pFSjqDIZWRr3LAfnhh3btv4E3rvVH42CeOP%5BS%5Dx6kDyvrokQEHyIHPGi7zswZbuHrUdx2XKEKKJzw1unDWfw0LZWjoehAs0QgSOz6Nzp8P4Hp8hqrULdIMch6acPT%5BS%5DbKV8zwugBIcjr5dI3rVR%5BP%5Dv42rsTtQB7dyb%5BP%5DRKb8Y83cGqhHM33hP%5BP%5DUtmbDC1PPfr%5BS%5DPC23lAO%5BS%5DmQ3mOy9x4pgQSOfp40XSfzgVg3EavITaxHBeI5nO3%5BP%5D%5BS%5D2rSDthDfuEm4sT9i6UF3sYd1vlOL0IC9ZsVatV1yhhpQ%5BE%5D%5BE%5D

---

正如您所看到的,用于每个请求的CookieContainer(this.cookieJar)都没有为refer_id,cust_session,refer_id_persistent选择Set-Cookie标头.但它确实接收了cust_id,private_browsing_mode,tcc和member_session ......任何想法为什么会这样？

Answer 1

只是想更新这篇文章以防其他人遇到这个.问题是.NET符合cookie标签的RFC规范,但不是所有站点都遵守.因此,问题最终不是微软或.NET.(虽然,IE,管理cookie很好,所以最好使用相同的解析方法重写他们的.NET cookie解析方法)问题是那些不遵循RFC规范的网站.

尽管如此,我经常遇到的一个问题是网站会在其Cookie中的过期日期使用逗号..NET将这些解释为不同cookie字段之间的分隔符,并在cookie结束后删除结尾和所有内容.

RFC规范:"Cookie:,后跟逗号分隔的一个或多个cookie列表." 对于此问题,一个简单的解决方案是Web服务器根据RFC文档用引号括起值.但是,没有RFC警察,所以我们只能希望人们遵守规则.