feat:更新.net网络连接文档

docs/Web/Network/NetCore.md

@@ -54,6 +54,7 @@ var host = Host.CreateDefaultBuilder(args)
     {
         services.AddSingleton<IPackageHandler<ProtocolFrame>, TcpPackageHandler>();
         services.AddSingleton<WebSocketMessageHandler>();
+        services.AddSingleton<WebSocketConnectionManager>();
 
         // 1. 注入 MQTT 配置
         services.Configure<MqttSettings>(context.Configuration.GetSection("Mqtt"));
@@ -70,6 +71,26 @@ var host = Host.CreateDefaultBuilder(args)
     .AddWebSocketServer(builder =>
     {
         builder
+            .UseSessionHandler(
+                session =>
+                {
+                    if (session is WebSocketSession wsSession)
+                    {
+                        var connectionManager = session.Server.ServiceProvider.GetRequiredService<WebSocketConnectionManager>();
+                        connectionManager.Add(wsSession);
+                    }
+                    return ValueTask.CompletedTask;
+                },
+                (session, reason) =>
+                {
+                    if (session is WebSocketSession wsSession)
+                    {
+                        var connectionManager = session.Server.ServiceProvider.GetRequiredService<WebSocketConnectionManager>();
+                        connectionManager.Remove(wsSession);
+                    }
+                    return ValueTask.CompletedTask;
+                }
+            )
             .UseWebSocketMessageHandler(async (session, package) =>
             {
                 using var scope = session.Server.ServiceProvider.CreateScope();
@@ -198,8 +219,34 @@ class TcpPackageHandler(ILogger<TcpPackageHandler> logger) : IPackageHandler<Pro
 
 ## 2.4 TCPService
 ```cs
-class TcpService(IServiceProvider serviceProvider, IOptions<ServerOptions> serverOptions) : SuperSocketService<ProtocolFrame>(serviceProvider, serverOptions)
+class TcpService(IServiceProvider serviceProvider, IOptions<ServerOptions> serverOptions, ILogger<TcpService> logger) : SuperSocketService<ProtocolFrame>(serviceProvider, serverOptions)
 {
+    private readonly ILogger<TcpService> _logger = logger;
+
+    private readonly ConcurrentDictionary<string, string> _sessionDevices = new();
+
+    public void BindDevice(string sessionId, string deviceNum)
+    {
+        _sessionDevices.AddOrUpdate(sessionId, deviceNum, (k, v) => deviceNum);
+    }
+
+    protected override async ValueTask OnSessionConnectedAsync(IAppSession session)
+    {
+        _logger.LogInformation("TCP Session 连上: {SessionID}", session.SessionID);
+        await base.OnSessionConnectedAsync(session);
+    }
+
+    protected override async ValueTask OnSessionClosedAsync(IAppSession session, CloseEventArgs e)
+    {
+        _logger.LogInformation("TCP Session 断开: {SessionID}, Reason={Reason}", session.SessionID, e.Reason);
+
+        if (_sessionDevices.TryRemove(session.SessionID, out var deviceNum))
+        {
+            _logger.LogInformation("设备 {DeviceNum} 标记离线", deviceNum);
+        }
+
+        await base.OnSessionClosedAsync(session, e);
+    }
 }
 ```
 
@@ -218,6 +265,40 @@ class WebSocketMessageHandler(ILogger<WebSocketMessageHandler> logger)
 }
 ```
 
+## 3.2 连接管理
+```cs
+public class WebSocketConnectionManager(ILogger<WebSocketConnectionManager> logger)
+{
+    private readonly ConcurrentDictionary<string, WebSocketSession> _sessions = new();
+    private readonly ILogger<WebSocketConnectionManager> _logger = logger;
+
+    public void Add(WebSocketSession session) => _sessions.TryAdd(session.SessionID, session);
+
+    public void Remove(WebSocketSession session) => _sessions.TryRemove(session.SessionID, out _);
+
+    public async Task BroadcastAsync(string json)
+    {
+        var payload = new ReadOnlyMemory<byte>(System.Text.Encoding.UTF8.GetBytes(json));
+
+        var tasks = _sessions.Values
+            .Where(s => s.State == SessionState.Connected)
+            .Select(async s =>
+            {
+                try
+                {
+                    await s.SendAsync(json);
+                }
+                catch
+                {
+                    Remove(s);
+                }
+            });
+
+        await Task.WhenAll(tasks);
+    }
+}
+```
+
 # 四、 MQTT服务器
 ## 4.1 MqttService
 ```cs