first commit

2026-09-02 16:31:50 +08:00
commit a461727193
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+using DotNetty.Buffers;
+using DotNetty.Codecs;
+using DotNetty.Transport.Bootstrapping;
+using DotNetty.Transport.Channels;
+using DotNetty.Transport.Channels.Sockets;
+using JSMachine.WMS.Infrastructure.Helper;
+using JSMachine.WMS.Netty.Common.Model;
+using System;
+using System.Net;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace JSMachine.WMS.Netty.NettyAsClient
+{
+    /// <summary>
+    /// TCP客户端引擎
+    /// </summary>
+    public class TcpClientEngine
+    {
+        private Bootstrap SocketBootstrap = new();
+        private MultithreadEventLoopGroup WorkGroup = new();
+        private IChannel channel;
+
+        /// <summary>
+        /// 初始化 TCP 客户端编解码管道并启动后台连接监视。
+        /// </summary>
+        /// <param name="tcpEngineInitParam">服务端地址、端口及协议编解码配置。</param>
+        public async Task InitEngine(TcpEngineInitParam tcpEngineInitParam)
+        {
+            LogHelper.Info("正在启动TCP客户端引擎-----------");
+
+            SocketBootstrap
+                .Group(WorkGroup)
+                .Channel<TcpSocketChannel>()
+                .Option(ChannelOption.TcpNodelay, true)
+                .Option(ChannelOption.ConnectTimeout, TimeSpan.FromSeconds(2))
+                .Option(ChannelOption.SoKeepalive, true)
+                //以下两种方式都是设置一次性能接收的数据包大小
+                //.Option(ChannelOption.SoRcvbuf, 4 * 1024)
+                .Option(ChannelOption.RcvbufAllocator, new FixedRecvByteBufAllocator(25))
+                .Handler(new ActionChannelInitializer<ISocketChannel>(channel =>
+                {
+                    IChannelPipeline pipeline = channel.Pipeline;
+
+                    if (!string.IsNullOrEmpty(tcpEngineInitParam.DecoderWord))
+                    {
+                        IByteBuffer delimiter = Unpooled.WrappedBuffer(Encoding.UTF8.GetBytes("\r"));
+                        //简单的协议可以直接使用自带的分隔符解码器
+                        pipeline.AddLast("framing-dec", new DelimiterBasedFrameDecoder(32, true, delimiter));
+                    }
+                    else
+                    {
+                        //pipeline.AddLast("framing-enc", new LengthFieldPrepender(2));
+                        pipeline.AddLast("framing-dec", new LengthFieldBasedFrameDecoder(ushort.MaxValue, 0, 2, 0, 2));
+                    }
+                    if (!string.IsNullOrEmpty(tcpEngineInitParam.EncoderWord))
+                    {
+                        //自定义编码器，编解码器必须写在处理器之前，否则数据包将不会经过编解码器
+                        pipeline.AddLast(new JSMachine.WMS.Netty.NettyAsClient.Codec.Encoder(tcpEngineInitParam.EncoderWord));
+                    }
+                    else
+                    {
+                        pipeline.AddLast(new JSMachine.WMS.Netty.NettyAsClient.Codec.EnCoderPrint(tcpEngineInitParam.EncoderWord));
+                    }
+
+
+                    pipeline.AddLast("echo", new EchoClientChannelHandler(tcpEngineInitParam));
+                }));
+
+            await MonitorTcpConnection(tcpEngineInitParam.IP, tcpEngineInitParam.Port);
+        }
+
+        private async Task MonitorTcpConnection(string serverIP, int port)
+        {
+            // 连接断开后持续重试，保证扫码设备临时掉线时能够自动恢复通信。
+           await Task.Run(async () => 
+            {
+                while (true)
+                {
+                    if (channel == null || !channel.Active)
+                    {
+                        try
+                        {
+                            channel = await SocketBootstrap.ConnectAsync(new IPEndPoint(IPAddress.Parse(serverIP), port));
+                        }
+                        catch (Exception ex)
+                        {
+                            LogHelper.Error($"连接服务端 {serverIP} 失败,错误信息 {ex.Message} 即将重新连接");
+                        }
+                    }
+                    Thread.Sleep(5000);
+                }
+
+            });
+
+            
+        }
+    }
+}