百度调价HttpWebRequest

利用了tcpTrace,httpLook,好不容易搞定了，做下备份，以后就可以自己开发调价的软件了。原来准备用httpClient,但是httpClient是不支持POST，还是不支持Connection: Keep-Alive。反正用httpClient请求失败了。client.ServicePoint.Expect100Continue = false; 这个什么属性，弄了我3h的时间。备份下，以后自己用。

Dictionary<string, string> cookiesTable = this.ConvertCookies(this.currentCookie);
            StringBuilder sb = new StringBuilder("path=");
            sb.Append(System.Web.HttpUtility.UrlEncode("MOD/").ToUpper());
            sb.Append("keyword");
            sb.AppendFormat("&userid={0}", cookiesTable["__cas__id__3"]);
            sb.AppendFormat("&token={0}", cookiesTable["__cas__st__3"]);
            sb.Append("&params={\"winfoid\":[\"1492927264\"],\"items\":{\"bid\":\"{price}\"}}".Replace("{price}", this.textBox1.Text));
            string postData = sb.ToString();
            byte[] data = System.Text.Encoding.UTF8.GetBytes(postData);

            HttpWebRequest client = (HttpWebRequest)HttpWebRequest.Create("http://fengchao.baidu.com/nirvana/request.ajax");

            client.Headers.Clear();

            //client.Headers.Add(HttpRequestHeader.Accept, "*/*");
            client.Headers.Add(HttpRequestHeader.AcceptLanguage, "zh-cn");
            client.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip, deflate");
            //client.Headers.Add(HttpRequestHeader.Host, "fengchao.baidu.com");
            //client.Headers.Add(HttpRequestHeader.Referer, "http://fengchao.baidu.com/nirvana/main.html?userid=797912#/manage/");
            client.Headers.Add(HttpRequestHeader.AcceptCharset, "GBK,utf-8;q=0.7,*;q=0.3");
            //client.Headers.Add(HttpRequestHeader.UserAgent, "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0E; .NET4.0C; InfoPath.2)");
            client.Headers.Add(HttpRequestHeader.CacheControl, "no-cache");
            //client.Headers.Add(HttpRequestHeader.ContentLength, postData.Length.ToString());
            //client.Headers.Add(HttpRequestHeader.Connection, "Keep-Alive");
            //client.Headers.Add(HttpRequestHeader.ContentType, "application/x-www-form-urlencoded");
            //client.Headers.Add(HttpRequestHeader.Cookie, this.currentCookie);

            client.Accept = "*/*";
            client.Referer = "http://fengchao.baidu.com/nirvana/main.html?userid=797912#/manage/";
            client.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0E; .NET4.0C; InfoPath.2)";
            //client.CachePolicy = new System.Net.Cache.RequestCachePolicy(System.Net.Cache.RequestCacheLevel.NoCacheNoStore);
            client.ContentLength = data.Length;
            client.KeepAlive = true;
            client.ServicePoint.Expect100Continue = false;
            client.ContentType = "application/x-www-form-urlencoded";
            client.Headers.Add("x-request-by: baidu.ajax");
            client.Method = "POST";
            client.Headers.Add(HttpRequestHeader.Cookie, this.currentCookie);

            System.IO.Stream sw0 = client.GetRequestStream();
            sw0.Write(data, 0, data.Length);
            

            HttpWebResponse response = (HttpWebResponse)client.GetResponse();
            System.IO.Stream sw = response.GetResponseStream();
            System.IO.StreamReader reader = new System.IO.StreamReader(sw, System.Text.Encoding.UTF8);
            string result = reader.ReadToEnd();
            System.Diagnostics.Trace.Write(result);
            reader.Close();
            sw0.Close();
            sw.Close();