C#使用Socket登陆WordPress源码

就在昨晚，在本屌丝刚刚发布屌丝与女神的回忆史《C#外挂QQ找茬辅助源码，早期开发》后，在苏飞大哥的技术讨论群有个群友提出一个问题。使用http协议模拟工具可以登录成功Wordpress但是自己写代码死活登陆不上。本人玩Wordpress已经很多年了，在很多年前还没有女神的时候就开始有开发Wordpress客户端的冲动。最终都不了了之。今天群友提出的问题让我重拾以前的那份冲动….说多了，言归正传
本屌最开始也是使用苏飞大哥写的Httphelper类。也是死活登陆不上，取不到登陆之后的Cookie值。最后就在想，为什么Fiddler里面看到的报文跟我发过去的都差不多而不行呢。可能是在访问的时候某些参数不正确吧，那我把发送过去的报文做成一模一样的应该没有问题吧。所以下面用到了Socket访问80端口的形式发送报文..（下载地址在最后）

使用Socket方式发送报文以及提取Cookie并访问网站的代码：

 class loginwp
 {
     public string PostData(string postURL, string postString, string encoding)
     {
         string strHTML = "";//用来保存获得的HTML代码
         Uri URI = new Uri(postURL);
         string sendString;
         sendString = "POST {0} HTTP/1.1\r\n";
         sendString += "Host: {1}\r\n";
         sendString += "User-Agent:Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0\r\n";
         sendString += "Content-Type:application/x-www-form-urlencoded\r\n";
         sendString += "Content-Length:{2}\r\n";
         sendString += "Connection:close\r\n";
         sendString += "Cookie:wordpress_test_cookie=WP+Cookie+check\r\n\r\n";
         sendString += "{3}\r\n";
         sendString = string.Format(sendString, URI.PathAndQuery, URI.Host, postString.Length, postString);
         Byte[] ByteGet = Encoding.GetEncoding(encoding).GetBytes(sendString);
         IPAddress hostadd = Dns.GetHostEntry(URI.Host).AddressList[];
         IPEndPoint EPhost = new IPEndPoint(hostadd, );
         Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
         s.Connect(EPhost);
         if (!s.Connected)
         {
             strHTML = "链接主机失败";
         }
         s.Send(ByteGet, ByteGet.Length, SocketFlags.None);
         strHTML = Recv(s, Encoding.GetEncoding(encoding));
         return strHTML;
     }

     public static String Recv(Socket sock, Encoding encode)
     {
         Byte[] buffer = new Byte[];
         StringBuilder sb = new StringBuilder();

         Thread.Sleep();//根据页面响应时间进行微调
         Int32 len = sock.Receive(buffer);
         sb.Append(encode.GetString(buffer, , len));

         while (sock.Available > )
         {
             Thread.Sleep();//也可以视情况微调
             Array.Clear(buffer, , buffer.Length);
             len = sock.Receive(buffer);
             sb.Append(encode.GetString(buffer, , len));
             string ss = encode.GetString(buffer, , len);
         }
         sock.Close();
         return sb.ToString();
     }

     /// <summary>
     /// 从返回的源代码中提取cookies 以及301或302跳转
     /// </summary>
     /// <param name="s"></param>
     /// <param name="location"></param>
     /// <returns></returns>
     public string GetCookies(string html, out string location)
     {
         StringBuilder sbCookies = new StringBuilder();
         location = string.Empty;
         string[] arr = html.Split(new string[] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries);
         foreach (string str in arr)
         {
             if (str.StartsWith("Set-Cookie: "))
             {
                 int intStart = str.IndexOf(";");
                 string strCookie = str.Substring(, intStart - );
                 sbCookies.Append(strCookie);
             }
             if (str.StartsWith("Location:"))
             {
                 location = str.Substring();
             }
         }
         return sbCookies.ToString();
     }

     /// <summary>
     /// 带上cookies 获取需要登录验证的页面
     /// </summary>
     /// <param name="url">请求的URL</param>
     /// <param name="cookies">cookies字符串</param>
     /// <param name="encoding">页面编码</param>
     /// <returns></returns>
     public string GetPage(string url, string cookies, string encoding)
     {
         Uri URI = new Uri(url);
         string strHTML = string.Empty;//用来保存获得的HTML代码
         IPHostEntry gist = Dns.GetHostEntry(URI.Host);//获得当前url的ip地址
         IPAddress ip = gist.AddressList[];//提取IP地址
         IPEndPoint ipEnd = new IPEndPoint(ip, );//封装IP地址和端口
         Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//实例化Stock
         try
         {
             socket.Connect(ipEnd);
         }//自动循环捕捉连接
         catch
         { }
         string sendString = "GET " + URI.PathAndQuery + " HTTP/1.1\r\n";
         sendString += "Connection:close\r\n";
         sendString += "Content-Type: application/x-www-form-urlencoded\r\n";
         sendString += "Host:" + URI.Host + "\r\n";
         if (!string.IsNullOrEmpty(cookies))
             sendString += "Cookie:" + cookies + "\r\n\r\n";
         byte[] ms = UTF8Encoding.GetEncoding(encoding).GetBytes(sendString);//将头部转换成byte形式
         socket.Send(ms);//发送
         int recv = -;//定义接受数据长度
         byte[] data = new byte[];//用来保存接收数据
         do
         {
             recv = socket.Receive(data);
             strHTML += Encoding.GetEncoding(encoding).GetString(data, , recv);
         } while (recv != );
         return strHTML;
     }
 }

最后放上Demo:C#使用Socket登陆Wordpress.zip

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