public string Get(string url, params Encoding[] encoding){string responseText = string.Empty;_statu = HttpRequestStatus.Busy;try{Regex reg = new Regex("(http://)?(?<name>[^/?]+)");Match m = reg.Match(url);var hostName = m.Groups["name"].Value;IPHostEntry hosts = Dns.GetHostByName(hostName);if (!url.StartsWith("http://"))url = "http://" + hostName + "/";if (!url.EndsWith("/"))url += "/";IPEndPoint ipPoint = new IPEndPoint(hosts.AddressList[0], 80);Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//创建Socket
                socket.Connect(ipPoint);///向服务器发送信息//{GET /index.php HTTP/1.0Content-Type: application/x-www-form-urlencodedStringBuilder bufRequest = new StringBuilder();bufRequest.Append("GET ").Append(url).Append(" HTTP/1.0\r\n");bufRequest.Append("Content-Type: application/x-www-form-urlencoded\r\n");bufRequest.Append("\r\n");string requestContent = bufRequest.ToString();byte[] bs = Encoding.ASCII.GetBytes(requestContent);socket.Send(bs);//发送信息/**////接受从服务器返回的信息byte[] recvBytes = new byte[1024];int bytes;Encoding coder = Encoding.UTF8;if (encoding.Count() > 0){coder = encoding[0];}do{bytes = socket.Receive(recvBytes, recvBytes.Length, 0);responseText += coder.GetString(recvBytes, 0, bytes);} while (bytes != 0);/**////一定记着用完socket后要关闭
                socket.Close();}catch (Exception ex){}return responseText;}

public class StateObject:IDisposable{public Socket workSocket = null;public const int BufferSize = 256;public byte[] buffer = new byte[BufferSize];// public StringBuilder sb = new StringBuilder();public MemoryStream Stream = new MemoryStream();public string header = null;public static Encoding Encoding = Encoding.UTF8;public Action<Stream> HandAction;public void Dispose(){if (workSocket != null){workSocket.Shutdown(SocketShutdown.Both);workSocket.Close();}}}public class AsynchronousClient:IDisposable{public StateObject State { set; get; }public void StartClient(IPEndPoint ipPoint, string data, Action<Stream> actionHandle){try{//IPHostEntry ipHostInfo = Dns.Resolve("host.contoso.com");//IPAddress ipAddress = ipHostInfo.AddressList[0];//IPEndPoint remoteEP = new IPEndPoint(ipAddress, port);Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);StateObject state = new StateObject();state.workSocket = client;state.header = data;state.HandAction = actionHandle;State = state;// state.header = "GET "+data+" HTTP/1.1";client.BeginConnect(ipPoint, new AsyncCallback(ConnectCallback), state);}catch { }}void ConnectCallback(IAsyncResult ar){StateObject state = (StateObject)ar.AsyncState;Socket client = state.workSocket;client.EndConnect(ar);Trace.WriteLine(string.Format("Socket connected to {0}", client.RemoteEndPoint.ToString()));byte[] byteData = StateObject.Encoding.GetBytes(state.header);// 开始发送数据到远程设备.  client.BeginSend(byteData, 0, byteData.Length, 0, new AsyncCallback(SendCallback), state);}void SendCallback(IAsyncResult ar){StateObject state = (StateObject)ar.AsyncState;Socket client = state.workSocket;// 完成数据发送.  int bytesSent = client.EndSend(ar);Trace.WriteLine(string.Format("Sent {0} bytes to server.", bytesSent.ToString()));try{//byte[] recvBytes = new byte[1024];//int bytes;//string responseText = string.Empty;//do//{//    bytes = client.Receive(recvBytes, recvBytes.Length, 0);//    responseText += StateObject.Encoding.GetString(recvBytes, 0, bytes);//} while (bytes != 0);  client.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0, new AsyncCallback(ReceiveCallback), state);}catch (Exception ex) { }}void ReceiveCallback(IAsyncResult ar){// 从输入参数异步state对象中获取state和socket对象  StateObject state = (StateObject)ar.AsyncState;Socket client = state.workSocket;//从远程设备读取数据  int bytesRead = client.EndReceive(ar);if (bytesRead > 0){// 有数据，存储.  //  state.sb.Append(StateObject.Encoding.GetString(state.buffer, 0, bytesRead));state.Stream.Write(state.buffer, 0, bytesRead);// 继续读取.  client.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0, new AsyncCallback(ReceiveCallback), state);}else{client.Shutdown(SocketShutdown.Both);client.Close();client = null;//state.HandAction.Invoke(state.sb.ToString());
                state.HandAction(state.Stream);}}public void Dispose(){State.Dispose();}}

     IPEndPoint ipPoint = new IPEndPoint(hosts.AddressList[0], 80);AsynchronousClient client = new AsynchronousClient();string responseText = string.Empty;string requestText=string.Empty;// = "GET " + url + " HTTP/1.0 \r\n Content-Type: application/x-www-form-urlencoded";StringBuilder bufRequest = new StringBuilder();bufRequest.Append("GET ").Append(url).Append(" HTTP/1.0\r\n");bufRequest.Append("Content-Type: application/x-www-form-urlencoded\r\n");bufRequest.Append("\r\n");requestText = bufRequest.ToString();if (!string.IsNullOrEmpty(header))requestText += header;client.StartClient(ipPoint, requestText, new Action<Stream>(x =>{byte[] recvBytes = new byte[1024];int bytes;Encoding coder = Encoding.UTF8;x.Seek(0, SeekOrigin.Begin);do{bytes =x.Read(recvBytes,0, recvBytes.Length);responseText += Encoding.UTF8.GetString(recvBytes, 0, bytes);} while (bytes != 0);client.Dispose();}));