The HttpClient is a helper class for Http request in C#, you can download the original source code from http://read.pudn.com/downloads111/sourcecode/web/463929/HttpClient.cs__.htm

Here is a Chinese version handle book: http://www.tzwhx.com/newOperate/html/1/12/123/8818.html

Tips first, otherwise the source code will overlap these tips:

• All cookies stored in special folder which can be got from “Environment.GetFolderPath(Environment.SpecialFolder.Cookies);”
• All cookies for one single domain are stored in one same plain-text file, the file name format is “[system user name]@domain[sort].txt”
• Each cookies saved in the plain text file separated in 9 lines, the last line is “*", the first line is the name of the cookie, and the second line is the value of the cookie, and the third line is domain name.
• I don’t know how to resolve the date-time/time-stamp from this plain text.

I have do the following enhancements:

• Auto add domain information into cookie in function “CreateRequest()”

private HttpWebRequest CreateRequest()
        {
            HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
            req.AllowAutoRedirect = false;
            req.CookieContainer = new CookieContainer();
            req.Headers.Add("Accept-Language", defaultLanguage);
            req.Accept = accept;
            req.UserAgent = userAgent;
            req.KeepAlive = false;

            Uri u=req.RequestUri;
            if (context.Cookies != null)
            {
                foreach (Cookie ck in context.Cookies)
                {
                    if (null != ck
                        && null!=ck.Name
                        && null!=ck.Value
                        && ck.Name.Length>0
                        //&& ck.Value.Length > 0
                        )
                    {
                        if (ck.Domain == null || ck.Domain.Trim().Length < 1)
                        {
                            ck.Domain = req.RequestUri.Host;
                        }
                        if (ck.Path == null || ck.Path.Length < 1)
                        {
                            ck.Path = req.RequestUri.LocalPath;
                        }
                        req.CookieContainer.Add(ck);
                    }
                }
            }
            if (!string.IsNullOrEmpty(context.Referer))
                req.Referer = context.Referer;

            if (verb == HttpVerb.HEAD)
            {
                req.Method = "HEAD";
                return req;
            }

• add a helper function “ParseCookies” into class “HttpClientContext”

public void ParseCookies(string str)
        {
            if (null == str || str.Trim().Length < 1)
            {
                return;
            }
            str=str.Trim();
            const string CookiePrefix="Cookie:";
            if (str.ToLower().StartsWith(CookiePrefix.ToLower()))
            {
                str = str.Substring(CookiePrefix.Length).Trim();
            }
            string[] args = str.Split(';');
            foreach (string sp in args)
            {
                int n = sp.IndexOf('=');
                if (n < 0)
                {
                    continue;
                }
                string name = sp.Substring(0, n).Trim();
                if (name.Length < 1)
                {
                    continue;
                }
                string value = sp.Substring(n + 1).Trim();
                if (null == this.cookies)
                {
                    this.cookies = new CookieCollection();
                }
                this.cookies.Add(new Cookie(name, value));
            }
        }

I’d like to put one file for download here:

httpclient.cs (16.46 kb)