use Pipelines io

FastTunnel.Core/Client/FastTunnelClient.cs

@@ -5,6 +5,8 @@
 // Copyright (c) 2019 Gui.H
 
 using System;
+using System.Buffers;
+using System.Net.Sockets;
 using System.Net.WebSockets;
 using System.Text;
 using System.Threading;
@@ -12,26 +14,26 @@ using System.Threading.Tasks;
 using FastTunnel.Core.Config;
 using FastTunnel.Core.Extensions;
 using FastTunnel.Core.Handlers.Client;
+using FastTunnel.Core.Models;
 using FastTunnel.Core.Models.Massage;
-using FastTunnel.Core.Protocol;
 using FastTunnel.Core.Utilitys;
+using Microsoft.AspNetCore.DataProtection;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
 
 namespace FastTunnel.Core.Client;
 
-/// <summary>
-/// 客户端
-/// </summary>
 public class FastTunnelClient : IFastTunnelClient
 {
     private ClientWebSocket socket;
 
     protected readonly ILogger<FastTunnelClient> _logger;
-    private readonly SwapHandler _newCustomerHandler;
+    protected DefaultClientConfig ClientConfig { get; private set; }
-    private readonly LogHandler _logHandler;
 
-    public DefaultClientConfig ClientConfig { get; private set; }
+    private readonly SwapHandler swapHandler;
+    private readonly LogHandler logHandler;
+
+    private static ReadOnlySpan<byte> EndSpan => new ReadOnlySpan<byte>(new byte[] { (byte)'\n' });
 
     public SuiDaoServer Server { get; protected set; }
 
@@ -41,9 +43,10 @@ public class FastTunnelClient : IFastTunnelClient
         LogHandler logHandler,
         IOptionsMonitor<DefaultClientConfig> configuration)
     {
+        ReadOnlySpan<int> span = new ReadOnlySpan<int>();
         _logger = logger;
-        _newCustomerHandler = newCustomerHandler;
+        swapHandler = newCustomerHandler;
-        _logHandler = logHandler;
+        this.logHandler = logHandler;
         ClientConfig = configuration.CurrentValue;
         Server = ClientConfig.Server;
     }
@@ -51,8 +54,7 @@ public class FastTunnelClient : IFastTunnelClient
     /// <summary>
     /// 启动客户端
     /// </summary>
-    /// <param name="cancellationToken"></param>
+    public virtual async Task StartAsync(CancellationToken cancellationToken)
-    public async void StartAsync(CancellationToken cancellationToken)
     {
         _logger.LogInformation("===== FastTunnel Client Start =====");
 
@@ -75,32 +77,29 @@ public class FastTunnelClient : IFastTunnelClient
 
     private async Task loginAsync(CancellationToken cancellationToken)
     {
-        try
+        var logMsg = GetLoginMsg(cancellationToken);
+        if (socket != null)
         {
-            var logMsg = GetLoginMsg(cancellationToken);
+            socket.Abort();
-
-            // 连接到的目标IP
-            socket = new ClientWebSocket();
-            socket.Options.RemoteCertificateValidationCallback = delegate { return true; };
-            socket.Options.SetRequestHeader(ProtocolConst.FASTTUNNEL_VERSION, AssemblyUtility.GetVersion().ToString());
-            socket.Options.SetRequestHeader(ProtocolConst.FASTTUNNEL_TOKEN, ClientConfig.Token);
-
-            _logger.LogInformation($"正在连接服务端 {Server.ServerAddr}:{Server.ServerPort}");
-            await socket.ConnectAsync(
-                new Uri($"{Server.Protocol}://{Server.ServerAddr}:{Server.ServerPort}"), cancellationToken);
-
-            _logger.LogDebug("连接服务端成功");
-
-            // 登录
-            await socket.SendCmdAsync(MessageType.LogIn, logMsg, cancellationToken);
-        }
-        catch (Exception)
-        {
-            throw;
         }
+
+        // 连接到的目标IP
+        socket = new ClientWebSocket();
+        socket.Options.RemoteCertificateValidationCallback = delegate { return true; };
+        socket.Options.SetRequestHeader(FastTunnelConst.FASTTUNNEL_VERSION, AssemblyUtility.GetVersion().ToString());
+        socket.Options.SetRequestHeader(FastTunnelConst.FASTTUNNEL_TOKEN, ClientConfig.Token);
+
+        _logger.LogInformation($"正在连接服务端 {Server.ServerAddr}:{Server.ServerPort}");
+        await socket.ConnectAsync(
+            new Uri($"{Server.Protocol}://{Server.ServerAddr}:{Server.ServerPort}"), cancellationToken);
+
+        _logger.LogDebug("连接服务端成功");
+
+        // 登录
+        await socket.SendCmdAsync(MessageType.LogIn, logMsg, cancellationToken);
     }
 
-    public virtual string GetLoginMsg(CancellationToken cancellationToken)
+    protected virtual string GetLoginMsg(CancellationToken cancellationToken)
     {
         Server = ClientConfig.Server;
         return new LogInMassage
@@ -110,46 +109,53 @@ public class FastTunnelClient : IFastTunnelClient
         }.ToJson();
     }
 
-    private async Task ReceiveServerAsync(CancellationToken cancellationToken)
+
+    protected async Task ReceiveServerAsync(CancellationToken cancellationToken)
     {
-        var buffer = new byte[ProtocolConst.MAX_CMD_LENGTH];
+        var utility = new WebSocketUtility(socket, ProcessLine);
-        while (!cancellationToken.IsCancellationRequested)
+        await utility.ProcessLinesAsync(cancellationToken);
-        {
-            var res = await socket.ReceiveAsync(buffer, cancellationToken);
-            var type = buffer[0];
-            var content = Encoding.UTF8.GetString(buffer, 1, res.Count - 1);
-            HandleServerRequestAsync(type, content, cancellationToken);
-        }
     }
 
-    private async void HandleServerRequestAsync(byte cmd, string ctx, CancellationToken cancellationToken)
+    private void ProcessLine(ReadOnlySequence<byte> line, CancellationToken cancellationToken)
+    {
+        HandleServerRequestAsync(line, cancellationToken);
+    }
+
+    private void HandleServerRequestAsync(ReadOnlySequence<byte> line, CancellationToken cancellationToken)
     {
         try
         {
+            var row = line.ToArray();
+            var cmd = row[0];
             IClientHandler handler;
             switch ((MessageType)cmd)
             {
                 case MessageType.SwapMsg:
                 case MessageType.Forward:
-                    handler = _newCustomerHandler;
+                    handler = swapHandler;
                     break;
                 case MessageType.Log:
-                    handler = _logHandler;
+                    handler = logHandler;
                     break;
                 default:
                     throw new Exception($"未处理的消息：cmd={cmd}");
             }
 
-            await handler.HandlerMsgAsync(this, ctx, cancellationToken);
+            var content = Encoding.UTF8.GetString(line.Slice(1));
+            handler.HandlerMsgAsync(this, content, cancellationToken);
         }
         catch (Exception ex)
         {
-            _logger.LogError(ex, "HandleServerRequest Error");
+            _logger.LogError(ex);
         }
     }
 
-    public void Stop(CancellationToken cancellationToken)
+    public async Task StopAsync(CancellationToken cancellationToken)
     {
         _logger.LogInformation("===== FastTunnel Client Stoping =====");
+        if (socket != null)
+        {
+            socket.Abort();
+        }
     }
 }

FastTunnel.Core/Client/IFastTunnelClient.cs

@@ -5,12 +5,13 @@
 // Copyright (c) 2019 Gui.H
 
 using System.Threading;
+using System.Threading.Tasks;
 
 namespace FastTunnel.Core.Client;
 
 public interface IFastTunnelClient
 {
-    void StartAsync(CancellationToken cancellationToken);
+    Task StartAsync(CancellationToken cancellationToken);
 
-    void Stop(CancellationToken cancellationToken);
+    Task StopAsync(CancellationToken cancellationToken);
 }

FastTunnel.Core/Client/ServiceFastTunnelClient.cs

@@ -31,10 +31,9 @@ public class ServiceFastTunnelClient : IHostedService
         await Task.CompletedTask;
     }
 
-    public Task StopAsync(CancellationToken cancellationToken)
+    public async Task StopAsync(CancellationToken cancellationToken)
     {
-        _fastTunnelClient.Stop(cancellationToken);
+        await _fastTunnelClient.StopAsync(cancellationToken);
-        return Task.CompletedTask;
     }
 
     private void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)

FastTunnel.Core/Extensions/LoggerExtentions.cs

@@ -0,0 +1,19 @@
+// Licensed under the Apache License, Version 2.0 (the "License").
+// You may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//     https://github.com/FastTunnel/FastTunnel/edit/v2/LICENSE
+// Copyright (c) 2019 Gui.H
+
+using Microsoft.Extensions.Logging;
+using System;
+
+namespace FastTunnel.Core.Extensions
+{
+    public static class LoggerExtentions
+    {
+        public static void LogError(this ILogger logger, Exception ex)
+        {
+            logger.LogError(ex, string.Empty);
+        }
+    }
+}

FastTunnel.Core/FastTunnelConst.cs

@@ -0,0 +1,21 @@
+// Licensed under the Apache License, Version 2.0 (the "License").
+// You may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//     https://github.com/FastTunnel/FastTunnel/edit/v2/LICENSE
+// Copyright (c) 2019 Gui.H
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FastTunnel.Core
+{
+    public class FastTunnelConst
+    {
+        public const string FASTTUNNEL_VERSION = "FT_VERSION";
+        public const string FASTTUNNEL_MSGID = "FT_MSGID";
+        public const string FASTTUNNEL_TOKEN = "FT_TOKEN";
+    }
+}

FastTunnel.Core/Handlers/Server/FastTunnelClientHandler.cs

@@ -14,6 +14,7 @@ using FastTunnel.Core.Models.Massage;
 using FastTunnel.Core.Protocol;
 using FastTunnel.Core.Server;
 using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 
 namespace FastTunnel.Core.Handlers.Server;
@@ -69,7 +70,9 @@ public class FastTunnelClientHandler
             return;
         }
 
-        var client = new TunnelClient(webSocket, fastTunnelServer, loginHandler, context.Connection.RemoteIpAddress);
+        var loggerFactory = context.RequestServices.GetRequiredService<ILoggerFactory>();
+        var log = loggerFactory.CreateLogger<TunnelClient>();
+        var client = new TunnelClient(webSocket, fastTunnelServer, loginHandler, context.Connection.RemoteIpAddress, log);
         client.ConnectionPort = context.Connection.LocalPort;
 
         try

FastTunnel.Core/Handlers/Server/ILoginHandler.cs

@@ -4,6 +4,7 @@
 //     https://github.com/FastTunnel/FastTunnel/edit/v2/LICENSE
 // Copyright (c) 2019 Gui.H
 
+using System.Threading;
 using System.Threading.Tasks;
 using FastTunnel.Core.Models;
 using FastTunnel.Core.Server;
@@ -12,5 +13,5 @@ namespace FastTunnel.Core.Handlers.Server;
 
 public interface ILoginHandler
 {
-    Task<bool> HandlerMsg(FastTunnelServer fastTunnelServer, TunnelClient tunnelClient, string lineCmd);
+    Task<bool> HandlerMsg(FastTunnelServer fastTunnelServer, TunnelClient tunnelClient, string lineCmd, CancellationToken cancellationToken);
 }

FastTunnel.Core/Handlers/Server/LoginHandler.cs

@@ -28,11 +28,11 @@ public class LoginHandler : ILoginHandler
         this.logger = logger;
     }
 
-    protected async Task HandleLoginAsync(FastTunnelServer server, TunnelClient client, LogInMassage requet)
+    protected async Task HandleLoginAsync(FastTunnelServer server, TunnelClient client, LogInMassage requet, CancellationToken cancellationToken)
     {
         var hasTunnel = false;
 
-        await client.webSocket.SendCmdAsync(MessageType.Log, $"穿透协议 | 映射关系（公网=>内网）", CancellationToken.None);
+        await client.webSocket.SendCmdAsync(MessageType.Log, $"穿透协议 | 映射关系（公网=>内网）", cancellationToken);
         Thread.Sleep(300);
 
         if (requet.Webs != null && requet.Webs.Any())
@@ -113,10 +113,10 @@ public class LoginHandler : ILoginHandler
             await client.webSocket.SendCmdAsync(MessageType.Log, TunnelResource.NoTunnel, CancellationToken.None);
     }
 
-    public virtual async Task<bool> HandlerMsg(FastTunnelServer fastTunnelServer, TunnelClient tunnelClient, string lineCmd)
+    public virtual async Task<bool> HandlerMsg(FastTunnelServer fastTunnelServer, TunnelClient tunnelClient, string lineCmd, CancellationToken cancellationToken)
     {
         var msg = JsonSerializer.Deserialize<LogInMassage>(lineCmd);
-        await HandleLoginAsync(fastTunnelServer, tunnelClient, msg);
+        await HandleLoginAsync(fastTunnelServer, tunnelClient, msg, cancellationToken);
         return NeedRecive;
     }
 }

FastTunnel.Core/Models/TunnelClient.cs

@@ -5,14 +5,20 @@
 // Copyright (c) 2019 Gui.H
 
 using System;
+using System.Buffers;
 using System.Collections.Generic;
+using System.IO.Pipelines;
 using System.Net;
+using System.Net.Sockets;
 using System.Net.WebSockets;
+using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
+using FastTunnel.Core.Client;
 using FastTunnel.Core.Handlers.Server;
-using FastTunnel.Core.Protocol;
 using FastTunnel.Core.Server;
+using FastTunnel.Core.Utilitys;
+using Microsoft.Extensions.Logging;
 
 namespace FastTunnel.Core.Models;
 
@@ -27,14 +33,18 @@ public class TunnelClient
 
     private readonly FastTunnelServer fastTunnelServer;
     private readonly ILoginHandler loginHandler;
+    private readonly ILogger<TunnelClient> logger;
 
     public IPAddress RemoteIpAddress { get; private set; }
 
     private readonly IList<WebInfo> webInfos = new List<WebInfo>();
     private readonly IList<ForwardInfo<ForwardHandlerArg>> forwardInfos = new List<ForwardInfo<ForwardHandlerArg>>();
 
-    public TunnelClient(WebSocket webSocket, FastTunnelServer fastTunnelServer, ILoginHandler loginHandler, IPAddress remoteIpAddress)
+    public TunnelClient(
+        WebSocket webSocket, FastTunnelServer fastTunnelServer,
+        ILoginHandler loginHandler, IPAddress remoteIpAddress, ILogger<TunnelClient> logger)
     {
+        this.logger = logger;
         this.webSocket = webSocket;
         this.fastTunnelServer = fastTunnelServer;
         this.loginHandler = loginHandler;
@@ -51,32 +61,29 @@ public class TunnelClient
         forwardInfos.Add(forwardInfo);
     }
 
+    /// <summary>
+    /// 接收客户端的消息
+    /// </summary>
+    /// <param name="cancellationToken"></param>
+    /// <returns></returns>
     public async Task ReviceAsync(CancellationToken cancellationToken)
     {
-        var buffer = new byte[ProtocolConst.MAX_CMD_LENGTH];
+        var utility = new WebSocketUtility(webSocket, ProcessLine);
-        var tunnelProtocol = new TunnelProtocol();
+        await utility.ProcessLinesAsync(cancellationToken);
-
-        while (true)
-        {
-            var res = await webSocket.ReceiveAsync(buffer, cancellationToken);
-            var cmds = tunnelProtocol.HandleBuffer(buffer, 0, res.Count);
-            if (cmds == null) continue;
-
-            foreach (var item in cmds)
-            {
-                if (!await HandleCmdAsync(this, item))
-                {
-                    return;
-                };
-            }
-        }
     }
 
-    private async Task<bool> HandleCmdAsync(TunnelClient tunnelClient, string lineCmd)
+
+    private async void ProcessLine(ReadOnlySequence<byte> line, CancellationToken cancellationToken)
+    {
+        var cmd = Encoding.UTF8.GetString(line);
+        await HandleCmdAsync(this, cmd, cancellationToken);
+    }
+
+    private async Task<bool> HandleCmdAsync(TunnelClient tunnelClient, string lineCmd, CancellationToken cancellationToken)
     {
         try
         {
-            return await loginHandler.HandlerMsg(fastTunnelServer, tunnelClient, lineCmd.Substring(1));
+            return await loginHandler.HandlerMsg(fastTunnelServer, tunnelClient, lineCmd.Substring(1), cancellationToken);
         }
         catch (Exception ex)
         {

FastTunnel.Core/Utilitys/WebSocketUtility.cs

@@ -0,0 +1,132 @@
+// Licensed under the Apache License, Version 2.0 (the "License").
+// You may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//     https://github.com/FastTunnel/FastTunnel/edit/v2/LICENSE
+// Copyright (c) 2019 Gui.H
+
+using System;
+using System.Buffers;
+using System.IO.Pipelines;
+using System.Net.WebSockets;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+
+namespace FastTunnel.Core.Utilitys;
+
+public class WebSocketUtility
+{
+    private readonly WebSocket webSocket;
+
+    public WebSocketUtility(WebSocket webSocket, Action<ReadOnlySequence<byte>, CancellationToken> processLine)
+    {
+        this.webSocket = webSocket;
+        ProcessLine = processLine;
+    }
+
+    public Action<ReadOnlySequence<byte>, CancellationToken> ProcessLine { get; }
+
+    public async Task ProcessLinesAsync(CancellationToken cancellationToken)
+    {
+        var pipe = new Pipe();
+        var writing = FillPipeAsync(webSocket, pipe.Writer, cancellationToken);
+        var reading = ReadPipeAsync(pipe.Reader, cancellationToken);
+
+        await Task.WhenAll(reading, writing);
+    }
+
+    /// <summary>
+    /// 读取socket收到的消息写入Pipe
+    /// </summary>
+    /// <param name="socket"></param>
+    /// <param name="writer"></param>
+    /// <param name="cancellationToken"></param>
+    /// <returns></returns>
+    /// <exception cref="NotImplementedException"></exception>
+    private async Task FillPipeAsync(WebSocket socket, PipeWriter writer, CancellationToken cancellationToken)
+    {
+        const int minimumBufferSize = 512;
+
+        while (true)
+        {
+            // Allocate at least 512 bytes from the PipeWriter.
+            var memory = writer.GetMemory(minimumBufferSize);
+
+            try
+            {
+                var bytesRead = await socket.ReceiveAsync(memory, cancellationToken);
+                if (bytesRead.Count == 0 || bytesRead.EndOfMessage || bytesRead.MessageType == WebSocketMessageType.Close)
+                {
+                    break;
+                }
+                // Tell the PipeWriter how much was read from the Socket.
+                writer.Advance(bytesRead.Count);
+            }
+            catch (Exception)
+            {
+                break;
+            }
+
+            // Make the data available to the PipeReader.
+            var result = await writer.FlushAsync(cancellationToken);
+
+            if (result.IsCompleted)
+            {
+                break;
+            }
+        }
+
+        // By completing PipeWriter, tell the PipeReader that there's no more data coming.
+        await writer.CompleteAsync();
+    }
+
+    /// <summary>
+    /// 从Pipe中读取收到的消息
+    /// </summary>
+    /// <param name="reader"></param>
+    /// <param name="cancellationToken"></param>
+    /// <returns></returns>
+    private async Task ReadPipeAsync(PipeReader reader, CancellationToken cancellationToken)
+    {
+        while (true)
+        {
+            var result = await reader.ReadAsync(cancellationToken);
+            var buffer = result.Buffer;
+
+            while (TryReadLine(ref buffer, out ReadOnlySequence<byte> line))
+            {
+                // Process the line.
+                ProcessLine(line, cancellationToken);
+            }
+
+            // Tell the PipeReader how much of the buffer has been consumed.
+            reader.AdvanceTo(buffer.Start, buffer.End);
+
+            // Stop reading if there's no more data coming.
+            if (result.IsCompleted)
+            {
+                break;
+            }
+        }
+
+        // Mark the PipeReader as complete.
+        await reader.CompleteAsync();
+    }
+
+    bool TryReadLine(ref ReadOnlySequence<byte> buffer, out ReadOnlySequence<byte> line)
+    {
+        // Look for a EOL in the buffer.
+        SequencePosition? position = buffer.PositionOf((byte)'\n');
+
+        if (position == null)
+        {
+            line = default;
+            return false;
+        }
+
+        // Skip the line + the \n.
+        line = buffer.Slice(0, position.Value);
+        buffer = buffer.Slice(buffer.GetPosition(1, position.Value));
+        return true;
+    }
+}