放肆雷特

  1 class loginwp
  2 {
  3     public string PostData(string postURL, string postString, string encoding)
  4     {
  5         string strHTML = "";//用来保存获得的HTML代码
  6         Uri URI = new Uri(postURL);
  7         string sendString;
  8         sendString = "POST {0} HTTP/1.1\r\n";
  9         sendString += "Host: {1}\r\n";
 10         sendString += "User-Agent:Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0\r\n";
 11         sendString += "Content-Type:application/x-www-form-urlencoded\r\n";
 12         sendString += "Content-Length:{2}\r\n";
 13         sendString += "Connection:close\r\n";
 14         sendString += "Cookie:wordpress_test_cookie=WP+Cookie+check\r\n\r\n";
 15         sendString += "{3}\r\n";
 16         sendString = string.Format(sendString, URI.PathAndQuery, URI.Host, postString.Length, postString);
 17         Byte[] ByteGet = Encoding.GetEncoding(encoding).GetBytes(sendString);
 18         IPAddress hostadd = Dns.GetHostEntry(URI.Host).AddressList[0];
 19         IPEndPoint EPhost = new IPEndPoint(hostadd, 80);
 20         Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
 21         s.Connect(EPhost);
 22         if (!s.Connected)
 23         {
 24             strHTML = "链接主机失败";
 25         }
 26         s.Send(ByteGet, ByteGet.Length, SocketFlags.None);
 27         strHTML = Recv(s, Encoding.GetEncoding(encoding));
 28         return strHTML;
 29     }
 30 
 31     public static String Recv(Socket sock, Encoding encode)
 32     {
 33         Byte[] buffer = new Byte[1024];
 34         StringBuilder sb = new StringBuilder();
 35 
 36         Thread.Sleep(50);//根据页面响应时间进行微调        
 37         Int32 len = sock.Receive(buffer);
 38         sb.Append(encode.GetString(buffer, 0, len));
 39 
 40         while (sock.Available > 0)
 41         {
 42             Thread.Sleep(300);//也可以视情况微调           
 43             Array.Clear(buffer, 0, buffer.Length);
 44             len = sock.Receive(buffer);
 45             sb.Append(encode.GetString(buffer, 0, len));
 46             string ss = encode.GetString(buffer, 0, len);
 47         }
 48         sock.Close();
 49         return sb.ToString();
 50     }
 51 
 52     /// <summary>
 53     /// 从返回的源代码中提取cookies 以及301或302跳转
 54     /// </summary>
 55     /// <param name="s"></param>
 56     /// <param name="location"></param>
 57     /// <returns></returns>
 58     public string GetCookies(string html, out string location)
 59     {
 60         StringBuilder sbCookies = new StringBuilder();
 61         location = string.Empty;
 62         string[] arr = html.Split(new string[] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries);
 63         foreach (string str in arr)
 64         {
 65             if (str.StartsWith("Set-Cookie: "))
 66             {
 67                 int intStart = str.IndexOf(";");
 68                 string strCookie = str.Substring(12, intStart - 11);
 69                 sbCookies.Append(strCookie);
 70             }
 71             if (str.StartsWith("Location:"))
 72             {
 73                 location = str.Substring(10);
 74             }
 75         }
 76         return sbCookies.ToString();
 77     }
 78 
 79     /// <summary>
 80     /// 带上cookies 获取需要登录验证的页面
 81     /// </summary>
 82     /// <param name="url">请求的URL</param>
 83     /// <param name="cookies">cookies字符串</param>
 84     /// <param name="encoding">页面编码</param>
 85     /// <returns></returns>
 86     public string GetPage(string url, string cookies, string encoding)
 87     {
 88         Uri URI = new Uri(url);
 89         string strHTML = string.Empty;//用来保存获得的HTML代码
 90         IPHostEntry gist = Dns.GetHostEntry(URI.Host);//获得当前url的ip地址
 91         IPAddress ip = gist.AddressList[0];//提取IP地址
 92         IPEndPoint ipEnd = new IPEndPoint(ip, 80);//封装IP地址和端口
 93         Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//实例化Stock
 94         try
 95         {
 96             socket.Connect(ipEnd);
 97         }//自动循环捕捉连接
 98         catch
 99         { }
100         string sendString = "GET " + URI.PathAndQuery + " HTTP/1.1\r\n";
101         sendString += "Connection:close\r\n";
102         sendString += "Content-Type: application/x-www-form-urlencoded\r\n";
103         sendString += "Host:" + URI.Host + "\r\n";
104         if (!string.IsNullOrEmpty(cookies))
105             sendString += "Cookie:" + cookies + "\r\n\r\n";
106         byte[] ms = UTF8Encoding.GetEncoding(encoding).GetBytes(sendString);//将头部转换成byte形式
107         socket.Send(ms);//发送
108         int recv = -1;//定义接受数据长度
109         byte[] data = new byte[1024];//用来保存接收数据
110         do
111         {
112             recv = socket.Receive(data);
113             strHTML += Encoding.GetEncoding(encoding).GetString(data, 0, recv);
114         } while (recv != 0);
115         return strHTML;
116     }
117 }