add Listener interface

FastTunnel.Core/AsyncListener.cs

@@ -0,0 +1,162 @@
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Net;
+using System.Net.Sockets;
+using System.Text;
+
+namespace FastTunnel.Core
+{
+    public class AsyncListener<T> : IListener<T>
+    {
+        ILogger<object> _logerr;
+
+        public string IP { get; set; }
+
+        public int Port { get; set; }
+
+        Action<Socket, T> handler;
+        Socket listener;
+        T _data;
+
+        public AsyncListener(string ip, int port, ILogger<object> logerr, T data)
+        {
+            _logerr = logerr;
+            _data = data;
+            this.IP = ip;
+            this.Port = port;
+
+            IPAddress ipa = IPAddress.Parse(IP);
+            IPEndPoint localEndPoint = new IPEndPoint(ipa, Port);
+
+            listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
+            listener.Bind(localEndPoint);
+        }
+
+        public void Listen(Action<Socket, T> receiveClient)
+        {
+            // example https://docs.microsoft.com/en-us/dotnet/framework/network-programming/asynchronous-server-socket-example
+            // Bind the socket to the local endpoint and listen for incoming connections.  
+            try
+            {
+                listener.Listen(100);
+
+                while (true)
+                {
+                    // Set the event to nonsignaled state.  
+                    //allDone.Reset();
+
+                    // Start an asynchronous socket to listen for connections.  
+                    Console.WriteLine("Waiting for a connection...");
+                    listener.BeginAccept(
+                        new AsyncCallback(AcceptCallback),
+                        listener);
+
+                    // Wait until a connection is made before continuing.  
+                    //allDone.WaitOne();
+                }
+
+            }
+            catch (Exception e)
+            {
+                Console.WriteLine(e.ToString());
+            }
+        }
+
+        void AcceptCallback(IAsyncResult ar)
+        {
+            // Signal the main thread to continue.  
+            //allDone.Set();
+
+            // Get the socket that handles the client request.  
+            Socket listener = (Socket)ar.AsyncState;
+            Socket handler = listener.EndAccept(ar);
+
+            // Create the state object.  
+            StateObject state = new StateObject();
+            state.workSocket = handler;
+            handler.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0, new AsyncCallback(ReadCallback), state);
+        }
+
+        void ReadCallback(IAsyncResult ar)
+        {
+            String content = String.Empty;
+
+            // Retrieve the state object and the handler socket  
+            // from the asynchronous state object.  
+            StateObject state = (StateObject)ar.AsyncState;
+            Socket handler = state.workSocket;
+
+            // Read data from the client socket.
+            int bytesRead = handler.EndReceive(ar);
+
+            if (bytesRead > 0)
+            {
+                // There  might be more data, so store the data received so far.  
+                state.sb.Append(Encoding.ASCII.GetString(
+                    state.buffer, 0, bytesRead));
+
+                // Check for end-of-file tag. If it is not there, read
+                // more data.  
+                content = state.sb.ToString();
+                if (content.IndexOf("<EOF>") > -1)
+                {
+                    // All the data has been read from the
+                    // client. Display it on the console.  
+                    Console.WriteLine("Read {0} bytes from socket. \n Data : {1}",
+                        content.Length, content);
+                    // Echo the data back to the client.  
+                    Send(handler, content);
+                }
+                else
+                {
+                    // Not all data received. Get more.  
+                    handler.BeginReceive(state.buffer, 0, StateObject.BufferSize, 0, new AsyncCallback(ReadCallback), state);
+                }
+            }
+        }
+
+        void Send(Socket handler, String data)
+        {
+            // Convert the string data to byte data using ASCII encoding.  
+            byte[] byteData = Encoding.ASCII.GetBytes(data);
+
+            // Begin sending the data to the remote device.  
+            handler.BeginSend(byteData, 0, byteData.Length, 0,
+                new AsyncCallback(SendCallback), handler);
+        }
+
+        void SendCallback(IAsyncResult ar)
+        {
+            try
+            {
+                // Retrieve the socket from the state object.  
+                Socket handler = (Socket)ar.AsyncState;
+
+                // Complete sending the data to the remote device.  
+                int bytesSent = handler.EndSend(ar);
+                Console.WriteLine("Sent {0} bytes to client.", bytesSent);
+
+                handler.Shutdown(SocketShutdown.Both);
+                handler.Close();
+
+            }
+            catch (Exception e)
+            {
+                Console.WriteLine(e.ToString());
+            }
+        }
+    }
+
+    public class StateObject
+    {
+        // Client  socket.  
+        public Socket workSocket = null;
+        // Size of receive buffer.  
+        public const int BufferSize = 1024;
+        // Receive buffer.  
+        public byte[] buffer = new byte[BufferSize];
+        // Received data string.  
+        public StringBuilder sb = new StringBuilder();
+    }
+}

FastTunnel.Core/Core/SuiDaoServer.cs

@@ -51,15 +51,15 @@ namespace FastTunnel.Core.Core
 
         private void ListenFastTunnelClient()
         {
-            var listener = new Listener<object>(_serverSettings.BindAddr, _serverSettings.BindPort, _logger, ReceiveClient, null);
-            listener.Listen();
+            IListener<object> listener = new Listener<object>(_serverSettings.BindAddr, _serverSettings.BindPort, _logger, null);
+            listener.Listen(ReceiveClient);
             _logger.LogDebug($"监听客户端 -> {_serverSettings.BindAddr}:{_serverSettings.BindPort}");
         }
 
         private void ListenCustomer()
         {
-            var listener = new Listener<object>(_serverSettings.BindAddr, _serverSettings.ProxyPort_HTTP, _logger, ReceiveCustomer, null);
-            listener.Listen();
+            var listener = new Listener<object>(_serverSettings.BindAddr, _serverSettings.ProxyPort_HTTP, _logger, null);
+            listener.Listen(ReceiveCustomer);
 
             _logger.LogDebug($"监听HTTP -> {_serverSettings.BindAddr}:{_serverSettings.ProxyPort_HTTP}");
         }

FastTunnel.Core/Handlers/Server/LoginHandler.cs

@@ -93,18 +93,17 @@ namespace FastTunnel.Core.Handlers
 
                         var ls = new Listener<SSHHandlerArg>("0.0.0.0", item.RemotePort, _logger,
 
-                            (client, local) =>
-                            {
-                                var msgid = Guid.NewGuid().ToString();
-                                local.LocalClient.Send(new Message<NewSSHRequest> { MessageType = MessageType.S_NewSSH, Content = new NewSSHRequest { MsgId = msgid, SSHConfig = local.SSHConfig } });
+                             new SSHHandlerArg { LocalClient = client, SSHConfig = item });
+                        ls.Listen((client, local) =>
+                        {
+                            var msgid = Guid.NewGuid().ToString();
+                            local.LocalClient.Send(new Message<NewSSHRequest> { MessageType = MessageType.S_NewSSH, Content = new NewSSHRequest { MsgId = msgid, SSHConfig = local.SSHConfig } });
 
-                                server.newRequest.Add(msgid, new NewRequest
-                                {
-                                    CustomerClient = client,
-                                });
-                            }
-                            , new SSHHandlerArg { LocalClient = client, SSHConfig = item });
-                        ls.Listen();
+                            server.newRequest.Add(msgid, new NewRequest
+                            {
+                                CustomerClient = client,
+                            });
+                        });
 
                         // listen success
                         server.SSHList.Add(item.RemotePort, new SSHInfo<SSHHandlerArg> { Listener = ls, Socket = client, SSHConfig = item });

FastTunnel.Core/IListener.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Net.Sockets;
+using System.Text;
+
+namespace FastTunnel.Core
+{
+    public interface IListener<T>
+    {
+        void Listen(Action<Socket, T> receiveClient);
+    }
+}

FastTunnel.Core/Listener.cs

@@ -9,7 +9,8 @@ using FastTunnel.Core.Extensions;
 
 namespace FastTunnel.Core
 {
-    public class Listener<T>
+    [Obsolete("Replaced by AsyncListener")]
+    public class Listener<T> : IListener<T>
     {
         ILogger<object> _logerr;
 
@@ -21,14 +22,12 @@ namespace FastTunnel.Core
         Socket ls;
         T _data;
 
-
-        public Listener(string ip, int port, ILogger<object> logerr, Action<Socket, T> acceptCustomerHandler, T data)
+        public Listener(string ip, int port, ILogger<object> logerr, T data)
         {
             _logerr = logerr;
             _data = data;
             this.IP = ip;
             this.Port = port;
-            handler = acceptCustomerHandler;
 
             IPAddress ipa = IPAddress.Parse(IP);
             IPEndPoint ipe = new IPEndPoint(ipa, Port);
@@ -37,8 +36,9 @@ namespace FastTunnel.Core
             ls.Bind(ipe);
         }
 
-        public void Listen()
+        public void Listen(Action<Socket, T> receiveClient)
         {
+            this.handler = receiveClient;
             ls.Listen(100);
             ThreadPool.QueueUserWorkItem((state) =>
             {
@@ -63,7 +63,6 @@ namespace FastTunnel.Core
                         throw;
                     }
                 }
-
             }, ls);
         }