diff --git a/src/CellularManagement.WebSocket/Connection/WebSocketConnectionManager.cs b/src/CellularManagement.WebSocket/Connection/WebSocketConnectionManager.cs
index e91dc99..5999a46 100644
--- a/src/CellularManagement.WebSocket/Connection/WebSocketConnectionManager.cs
+++ b/src/CellularManagement.WebSocket/Connection/WebSocketConnectionManager.cs
@@ -5,23 +5,37 @@ using Microsoft.Extensions.Logging;
 
 namespace CellularManagement.WebSocket.Connection;
 
+/// <summary>
+/// WebSocket 连接管理器
+/// 负责管理所有 WebSocket 连接，处理消息的入队和出队
+/// </summary>
 public class WebSocketConnectionManager : IDisposable
 {
+    // 存储所有活动的 WebSocket 连接
     private readonly ConcurrentDictionary<string, WebSocketConnection> _connections = new();
+    // 入站消息队列
     private readonly Channel<WebSocketMessage> _incomingMessages;
+    // 出站消息队列
     private readonly Channel<WebSocketMessage> _outgoingMessages;
     private readonly ILogger<WebSocketConnectionManager> _logger;
+    // 心跳检测定时器
     private readonly Timer _heartbeatTimer;
     private readonly TimeSpan _heartbeatInterval = TimeSpan.FromSeconds(30);
 
+    // 消息到达事件
+    public event Func<WebSocketMessage, Task>? OnMessageReceived;
+
     public WebSocketConnectionManager(ILogger<WebSocketConnectionManager> logger)
     {
         _logger = logger;
+        _logger.LogInformation("初始化 WebSocket 连接管理器");
+
+        // 创建有界通道，限制最大消息数量为 10000
         _incomingMessages = Channel.CreateBounded<WebSocketMessage>(new BoundedChannelOptions(10000)
         {
-            FullMode = BoundedChannelFullMode.Wait,
-            SingleReader = false,
-            SingleWriter = false
+            FullMode = BoundedChannelFullMode.Wait,  // 当队列满时等待
+            SingleReader = false,                    // 允许多个读取者
+            SingleWriter = false                     // 允许多个写入者
         });
 
         _outgoingMessages = Channel.CreateBounded<WebSocketMessage>(new BoundedChannelOptions(10000)
@@ -31,9 +45,17 @@ public class WebSocketConnectionManager : IDisposable
             SingleWriter = false
         });
 
+        _logger.LogInformation("创建消息队列完成，入站队列大小：{IncomingSize}，出站队列大小：{OutgoingSize}", 
+            10000, 10000);
+
+        // 启动心跳检测定时器
         _heartbeatTimer = new Timer(CheckConnections, null, _heartbeatInterval, _heartbeatInterval);
+        _logger.LogInformation("心跳检测定时器已启动，间隔：{Interval}秒", _heartbeatInterval.TotalSeconds);
     }
 
+    /// <summary>
+    /// 添加新的 WebSocket 连接
+    /// </summary>
     public string AddConnection(System.Net.WebSockets.WebSocket socket)
     {
         var connectionId = Guid.NewGuid().ToString();
@@ -45,91 +67,155 @@ public class WebSocketConnectionManager : IDisposable
         };
         
         _connections.TryAdd(connectionId, connection);
-        _logger.LogInformation("New connection added: {ConnectionId}", connectionId);
+        _logger.LogInformation("添加新连接成功，连接ID：{ConnectionId}，当前连接数：{ConnectionCount}", 
+            connectionId, _connections.Count);
         return connectionId;
     }
 
+    /// <summary>
+    /// 移除 WebSocket 连接
+    /// </summary>
     public bool RemoveConnection(string connectionId)
     {
         if (_connections.TryRemove(connectionId, out var connection))
         {
-            _logger.LogInformation("Connection removed: {ConnectionId}", connectionId);
+            _logger.LogInformation("移除连接成功，连接ID：{ConnectionId}，当前连接数：{ConnectionCount}", 
+                connectionId, _connections.Count);
             return true;
         }
+        _logger.LogWarning("移除连接失败，连接ID：{ConnectionId} 不存在", connectionId);
         return false;
     }
 
+    /// <summary>
+    /// 获取指定连接
+    /// </summary>
     public WebSocketConnection? GetConnection(string connectionId)
     {
         _connections.TryGetValue(connectionId, out var connection);
+        if (connection == null)
+        {
+            _logger.LogWarning("获取连接失败，连接ID：{ConnectionId} 不存在", connectionId);
+        }
         return connection;
     }
 
+    /// <summary>
+    /// 更新连接活动时间
+    /// </summary>
     public void UpdateConnectionActivity(string connectionId)
     {
         if (_connections.TryGetValue(connectionId, out var connection))
         {
             connection.LastActivityTime = DateTime.UtcNow;
+            _logger.LogDebug("更新连接活动时间，连接ID：{ConnectionId}", connectionId);
         }
     }
 
+    /// <summary>
+    /// 入队入站消息
+    /// </summary>
     public async ValueTask QueueIncomingMessage(WebSocketMessage message)
     {
+        _logger.LogDebug("入队入站消息，连接ID：{ConnectionId}，消息类型：{MessageType}，数据大小：{DataSize}字节", 
+            message.ConnectionId, message.MessageType, message.Data.Length);
+        
         await _incomingMessages.Writer.WriteAsync(message);
         UpdateConnectionActivity(message.ConnectionId);
+        
+        // 触发消息到达事件
+        if (OnMessageReceived != null)
+        {
+            _logger.LogDebug("触发消息到达事件，连接ID：{ConnectionId}", message.ConnectionId);
+            await OnMessageReceived(message);
+        }
     }
 
+    /// <summary>
+    /// 入队出站消息
+    /// </summary>
     public async ValueTask QueueOutgoingMessage(WebSocketMessage message)
     {
+        _logger.LogDebug("入队出站消息，连接ID：{ConnectionId}，消息类型：{MessageType}，数据大小：{DataSize}字节", 
+            message.ConnectionId, message.MessageType, message.Data.Length);
+        
         await _outgoingMessages.Writer.WriteAsync(message);
         UpdateConnectionActivity(message.ConnectionId);
     }
 
+    /// <summary>
+    /// 读取入站消息
+    /// </summary>
     public IAsyncEnumerable<WebSocketMessage> ReadIncomingMessagesAsync(CancellationToken cancellationToken)
     {
+        _logger.LogDebug("开始读取入站消息");
         return _incomingMessages.Reader.ReadAllAsync(cancellationToken);
     }
 
+    /// <summary>
+    /// 读取出站消息
+    /// </summary>
     public IAsyncEnumerable<WebSocketMessage> ReadOutgoingMessagesAsync(CancellationToken cancellationToken)
     {
+        _logger.LogDebug("开始读取出站消息");
         return _outgoingMessages.Reader.ReadAllAsync(cancellationToken);
     }
 
+    /// <summary>
+    /// 获取所有连接
+    /// </summary>
     public IEnumerable<WebSocketConnection> GetAllConnections()
     {
+        _logger.LogDebug("获取所有连接，当前连接数：{ConnectionCount}", _connections.Count);
         return _connections.Values;
     }
 
+    /// <summary>
+    /// 检查连接状态
+    /// </summary>
     private void CheckConnections(object? state)
     {
         var now = DateTime.UtcNow;
         var inactiveThreshold = TimeSpan.FromMinutes(1);
+        int inactiveCount = 0;
 
         foreach (var (connectionId, connection) in _connections)
         {
             if (connection.Status == ConnectionStatus.Connected && 
                 now - connection.LastActivityTime > inactiveThreshold)
             {
-                _logger.LogWarning("Connection {ConnectionId} is inactive, closing", connectionId);
+                _logger.LogWarning("检测到不活跃连接，连接ID：{ConnectionId}，最后活动时间：{LastActivityTime}", 
+                    connectionId, connection.LastActivityTime);
+                inactiveCount++;
                 _ = CloseConnectionAsync(connectionId);
             }
         }
+
+        if (inactiveCount > 0)
+        {
+            _logger.LogInformation("心跳检测完成，发现 {InactiveCount} 个不活跃连接", inactiveCount);
+        }
     }
 
+    /// <summary>
+    /// 关闭连接
+    /// </summary>
     private async Task CloseConnectionAsync(string connectionId)
     {
         if (_connections.TryGetValue(connectionId, out var connection))
         {
             try
             {
+                _logger.LogInformation("正在关闭连接，连接ID：{ConnectionId}", connectionId);
                 await connection.Socket.CloseAsync(
                     WebSocketCloseStatus.NormalClosure,
                     "Connection timeout",
                     CancellationToken.None);
+                _logger.LogInformation("连接已关闭，连接ID：{ConnectionId}", connectionId);
             }
             catch (Exception ex)
             {
-                _logger.LogError(ex, "Error closing connection {ConnectionId}", connectionId);
+                _logger.LogError(ex, "关闭连接时发生错误，连接ID：{ConnectionId}", connectionId);
             }
             finally
             {
@@ -140,10 +226,15 @@ public class WebSocketConnectionManager : IDisposable
 
     public void Dispose()
     {
+        _logger.LogInformation("正在释放 WebSocket 连接管理器资源");
         _heartbeatTimer.Dispose();
+        _logger.LogInformation("WebSocket 连接管理器资源已释放");
     }
 }
 
+/// <summary>
+/// WebSocket 连接信息
+/// </summary>
 public class WebSocketConnection
 {
     public System.Net.WebSockets.WebSocket Socket { get; set; } = null!;
@@ -151,18 +242,24 @@ public class WebSocketConnection
     public ConnectionStatus Status { get; set; }
 }
 
+/// <summary>
+/// 连接状态枚举
+/// </summary>
 public enum ConnectionStatus
 {
-    Connected,
-    Disconnected,
-    Error
+    Connected,      // 已连接
+    Disconnected,   // 已断开
+    Error          // 错误状态
 }
 
+/// <summary>
+/// WebSocket 消息记录
+/// </summary>
 public record WebSocketMessage
 {
-    public string ConnectionId { get; init; } = string.Empty;
-    public byte[] Data { get; init; } = Array.Empty<byte>();
-    public WebSocketMessageType MessageType { get; init; }
-    public DateTime Timestamp { get; init; } = DateTime.UtcNow;
-    public int Priority { get; init; } = 0;
+    public string ConnectionId { get; init; } = string.Empty;                    // 连接ID
+    public byte[] Data { get; init; } = Array.Empty<byte>();                    // 消息数据
+    public WebSocketMessageType MessageType { get; init; }                      // 消息类型
+    public DateTime Timestamp { get; init; } = DateTime.UtcNow;                 // 时间戳
+    public int Priority { get; init; } = 0;                                     // 优先级
 } 
\ No newline at end of file
diff --git a/src/CellularManagement.WebSocket/Middleware/WebSocketMiddleware.cs b/src/CellularManagement.WebSocket/Middleware/WebSocketMiddleware.cs
index c67d7f7..5f8e586 100644
--- a/src/CellularManagement.WebSocket/Middleware/WebSocketMiddleware.cs
+++ b/src/CellularManagement.WebSocket/Middleware/WebSocketMiddleware.cs
@@ -5,6 +5,10 @@ using Microsoft.Extensions.Logging;
 
 namespace CellularManagement.WebSocket.Middleware;
 
+/// <summary>
+/// WebSocket 中间件
+/// 负责处理 WebSocket 连接的建立和消息的接收
+/// </summary>
 public class WebSocketMiddleware
 {
     private readonly RequestDelegate _next;
@@ -20,14 +24,21 @@ public class WebSocketMiddleware
         _next = next;
         _connectionManager = connectionManager;
         _logger = logger;
+        _logger.LogInformation("初始化 WebSocket 中间件，缓冲区大小：{BufferSize}字节", _bufferSize);
     }
 
+    /// <summary>
+    /// 处理 HTTP 请求
+    /// </summary>
     public async Task InvokeAsync(HttpContext context)
     {
         if (context.WebSockets.IsWebSocketRequest)
         {
+            _logger.LogInformation("收到 WebSocket 连接请求，路径：{Path}", context.Request.Path);
+            
             var webSocket = await context.WebSockets.AcceptWebSocketAsync();
             var connectionId = _connectionManager.AddConnection(webSocket);
+            _logger.LogInformation("WebSocket 连接已接受，连接ID：{ConnectionId}", connectionId);
 
             try
             {
@@ -35,30 +46,41 @@ public class WebSocketMiddleware
             }
             catch (WebSocketException ex)
             {
-                _logger.LogError(ex, "WebSocket error for connection {ConnectionId}", connectionId);
+                _logger.LogError(ex, "WebSocket 连接发生错误，连接ID：{ConnectionId}，错误信息：{ErrorMessage}", 
+                    connectionId, ex.Message);
                 await HandleWebSocketError(webSocket, ex);
             }
             catch (Exception ex)
             {
-                _logger.LogError(ex, "Error handling WebSocket connection {ConnectionId}", connectionId);
+                _logger.LogError(ex, "处理 WebSocket 连接时发生错误，连接ID：{ConnectionId}，错误信息：{ErrorMessage}", 
+                    connectionId, ex.Message);
                 await HandleWebSocketError(webSocket, ex);
             }
             finally
             {
                 _connectionManager.RemoveConnection(connectionId);
+                _logger.LogInformation("WebSocket 连接已关闭，连接ID：{ConnectionId}", connectionId);
             }
         }
         else
         {
+            _logger.LogDebug("非 WebSocket 请求，继续处理下一个中间件，路径：{Path}", context.Request.Path);
             await _next(context);
         }
     }
 
+    /// <summary>
+    /// 处理 WebSocket 连接
+    /// </summary>
     private async Task HandleWebSocketConnection(System.Net.WebSockets.WebSocket webSocket, string connectionId)
     {
+        _logger.LogInformation("开始处理 WebSocket 连接，连接ID：{ConnectionId}", connectionId);
+        
         var buffer = new byte[_bufferSize];
         var receiveResult = await webSocket.ReceiveAsync(
             new ArraySegment<byte>(buffer), CancellationToken.None);
+        _logger.LogDebug("收到第一条消息，连接ID：{ConnectionId}，消息类型：{MessageType}，数据大小：{DataSize}字节",
+            connectionId, receiveResult.MessageType, receiveResult.Count);
 
         while (!receiveResult.CloseStatus.HasValue)
         {
@@ -71,39 +93,57 @@ public class WebSocketMiddleware
                     MessageType = receiveResult.MessageType
                 };
 
+                _logger.LogDebug("准备处理消息，连接ID：{ConnectionId}，消息类型：{MessageType}，数据大小：{DataSize}字节",
+                    connectionId, message.MessageType, message.Data.Length);
+
                 await _connectionManager.QueueIncomingMessage(message);
+                _logger.LogDebug("消息已入队，连接ID：{ConnectionId}", connectionId);
 
                 receiveResult = await webSocket.ReceiveAsync(
                     new ArraySegment<byte>(buffer), CancellationToken.None);
+                _logger.LogDebug("收到新消息，连接ID：{ConnectionId}，消息类型：{MessageType}，数据大小：{DataSize}字节",
+                    connectionId, receiveResult.MessageType, receiveResult.Count);
             }
             catch (Exception ex)
             {
-                _logger.LogError(ex, "Error processing message for connection {ConnectionId}", connectionId);
+                _logger.LogError(ex, "处理消息时发生错误，连接ID：{ConnectionId}，错误信息：{ErrorMessage}",
+                    connectionId, ex.Message);
                 throw;
             }
         }
 
+        _logger.LogInformation("收到关闭请求，连接ID：{ConnectionId}，关闭状态：{CloseStatus}，描述：{CloseDescription}",
+            connectionId, receiveResult.CloseStatus, receiveResult.CloseStatusDescription);
+
         await webSocket.CloseAsync(
             receiveResult.CloseStatus.Value,
             receiveResult.CloseStatusDescription,
             CancellationToken.None);
+        _logger.LogInformation("连接已关闭，连接ID：{ConnectionId}", connectionId);
     }
 
+    /// <summary>
+    /// 处理 WebSocket 错误
+    /// </summary>
     private async Task HandleWebSocketError(System.Net.WebSockets.WebSocket webSocket, Exception exception)
     {
+        _logger.LogError(exception, "处理 WebSocket 错误，错误信息：{ErrorMessage}", exception.Message);
+
         try
         {
             if (webSocket.State == WebSocketState.Open)
             {
+                _logger.LogInformation("正在关闭出错的 WebSocket 连接");
                 await webSocket.CloseAsync(
                     WebSocketCloseStatus.InternalServerError,
                     "Internal server error",
                     CancellationToken.None);
+                _logger.LogInformation("WebSocket 连接已关闭");
             }
         }
         catch (Exception ex)
         {
-            _logger.LogError(ex, "Error closing WebSocket after error");
+            _logger.LogError(ex, "关闭 WebSocket 连接时发生错误，错误信息：{ErrorMessage}", ex.Message);
         }
     }
 } 
\ No newline at end of file
diff --git a/src/CellularManagement.WebSocket/Pipeline/IPipelineStep.cs b/src/CellularManagement.WebSocket/Pipeline/IPipelineStep.cs
index 434047d..ae1d8df 100644
--- a/src/CellularManagement.WebSocket/Pipeline/IPipelineStep.cs
+++ b/src/CellularManagement.WebSocket/Pipeline/IPipelineStep.cs
@@ -1,8 +1,29 @@
+using Microsoft.Extensions.Logging;
+
 namespace CellularManagement.WebSocket.Pipeline;
 
+/// <summary>
+/// 管道步骤接口
+/// 定义消息处理管道中的单个处理步骤
+/// </summary>
+/// <typeparam name="TInput">输入消息类型</typeparam>
+/// <typeparam name="TOutput">输出消息类型</typeparam>
 public interface IPipelineStep<TInput, TOutput>
 {
+    /// <summary>
+    /// 处理消息
+    /// </summary>
+    /// <param name="input">输入消息</param>
+    /// <param name="cancellationToken">取消令牌</param>
+    /// <returns>处理后的消息</returns>
     Task<TOutput> ProcessAsync(TInput input, CancellationToken cancellationToken);
+
+    /// <summary>
+    /// 处理消息（带错误处理）
+    /// </summary>
+    /// <param name="input">输入消息</param>
+    /// <param name="cancellationToken">取消令牌</param>
+    /// <returns>处理后的消息</returns>
     Task<TOutput> ProcessWithErrorHandlingAsync(TInput input, CancellationToken cancellationToken);
 }
 
diff --git a/src/CellularManagement.WebSocket/Pipeline/PipelineBuilder.cs b/src/CellularManagement.WebSocket/Pipeline/PipelineBuilder.cs
index 5419192..c155bed 100644
--- a/src/CellularManagement.WebSocket/Pipeline/PipelineBuilder.cs
+++ b/src/CellularManagement.WebSocket/Pipeline/PipelineBuilder.cs
@@ -3,33 +3,117 @@ using Microsoft.Extensions.Logging;
 
 namespace CellularManagement.WebSocket.Pipeline;
 
+/// <summary>
+/// 管道构建器
+/// 用于构建消息处理管道
+/// </summary>
+/// <typeparam name="TInput">输入消息类型</typeparam>
+/// <typeparam name="TOutput">输出消息类型</typeparam>
 public class PipelineBuilder<TInput, TOutput>
 {
-    private readonly List<IPipelineStep<TInput, TOutput>> _steps = new();
     private readonly ILoggerFactory _loggerFactory;
+    private readonly ILogger<PipelineBuilder<TInput, TOutput>> _logger;
+    private readonly List<IPipelineStep<TInput, TOutput>> _steps = new();
 
     public PipelineBuilder(ILoggerFactory loggerFactory)
     {
         _loggerFactory = loggerFactory;
+        _logger = loggerFactory.CreateLogger<PipelineBuilder<TInput, TOutput>>();
+        _logger.LogInformation("初始化管道构建器，输入类型：{InputType}，输出类型：{OutputType}", 
+            typeof(TInput).Name, typeof(TOutput).Name);
     }
 
+    /// <summary>
+    /// 添加处理步骤
+    /// </summary>
+    /// <param name="step">处理步骤</param>
+    /// <returns>管道构建器</returns>
     public PipelineBuilder<TInput, TOutput> AddStep(IPipelineStep<TInput, TOutput> step)
     {
-        if (step == null)
-        {
-            throw new ArgumentNullException(nameof(step));
-        }
+        _logger.LogInformation("添加处理步骤，步骤类型：{StepType}", step.GetType().Name);
         _steps.Add(step);
         return this;
     }
 
+    /// <summary>
+    /// 构建处理管道
+    /// </summary>
+    /// <returns>处理管道</returns>
     public IPipelineStep<TInput, TOutput> Build()
     {
+        _logger.LogInformation("开始构建处理管道，步骤数量：{StepCount}", _steps.Count);
+        
         if (_steps.Count == 0)
         {
-            throw new InvalidOperationException("Pipeline must have at least one step");
+            _logger.LogWarning("处理管道没有添加任何步骤");
+            throw new InvalidOperationException("处理管道必须至少包含一个步骤");
+        }
+
+        // 构建处理链
+        var pipeline = _steps[0];
+        for (int i = 1; i < _steps.Count; i++)
+        {
+            var currentStep = _steps[i];
+            _logger.LogDebug("连接处理步骤：{CurrentStep} -> {NextStep}", 
+                pipeline.GetType().Name, currentStep.GetType().Name);
+            pipeline = new ChainedPipelineStep(pipeline, currentStep, _loggerFactory);
+        }
+
+        _logger.LogInformation("处理管道构建完成，总步骤数：{StepCount}", _steps.Count);
+        return pipeline;
+    }
+
+    /// <summary>
+    /// 链式处理步骤
+    /// 用于连接多个处理步骤
+    /// </summary>
+    private class ChainedPipelineStep : IPipelineStep<TInput, TOutput>
+    {
+        private readonly IPipelineStep<TInput, TOutput> _first;
+        private readonly IPipelineStep<TInput, TOutput> _second;
+        private readonly ILogger<ChainedPipelineStep> _logger;
+
+        public ChainedPipelineStep(
+            IPipelineStep<TInput, TOutput> first,
+            IPipelineStep<TInput, TOutput> second,
+            ILoggerFactory loggerFactory)
+        {
+            _first = first;
+            _second = second;
+            _logger = loggerFactory.CreateLogger<ChainedPipelineStep>();
+            _logger.LogDebug("创建链式处理步骤，第一步：{FirstStep}，第二步：{SecondStep}", 
+                first.GetType().Name, second.GetType().Name);
+        }
+
+        public async Task<TOutput> ProcessAsync(TInput input, CancellationToken cancellationToken)
+        {
+            _logger.LogDebug("开始链式处理消息");
+            var intermediate = await _first.ProcessAsync(input, cancellationToken);
+            if (intermediate is TInput inputValue)
+            {
+                return await _second.ProcessAsync(inputValue, cancellationToken);
+            }
+            throw new InvalidOperationException($"无法将类型 {intermediate?.GetType().Name ?? "null"} 转换为 {typeof(TInput).Name}");
+        }
+
+        public async Task<TOutput> ProcessWithErrorHandlingAsync(TInput input, CancellationToken cancellationToken)
+        {
+            _logger.LogDebug("开始链式处理消息（带错误处理）");
+            try
+            {
+                var intermediate = await _first.ProcessWithErrorHandlingAsync(input, cancellationToken);
+                if (intermediate is TInput inputValue)
+                {
+                    return await _second.ProcessWithErrorHandlingAsync(inputValue, cancellationToken);
+                }
+                throw new InvalidOperationException($"无法将类型 {intermediate?.GetType().Name ?? "null"} 转换为 {typeof(TInput).Name}");
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "链式处理发生错误");
+                throw;
+            }
         }
-        return new Pipeline<TInput, TOutput>(_steps, _loggerFactory.CreateLogger<Pipeline<TInput, TOutput>>());
     }
 }
 
@@ -40,22 +124,29 @@ public class Pipeline<TInput, TOutput> : IPipelineStep<TInput, TOutput>
 
     public Pipeline(IReadOnlyList<IPipelineStep<TInput, TOutput>> steps, ILogger<Pipeline<TInput, TOutput>> logger)
     {
-        _steps = steps;
-        _logger = logger;
+        _steps = steps ?? throw new ArgumentNullException(nameof(steps));
+        _logger = logger ?? throw new ArgumentNullException(nameof(logger));
     }
 
     public async Task<TOutput> ProcessAsync(TInput input, CancellationToken cancellationToken)
     {
+        TOutput? result = default;
         var current = input;
-        TOutput output = default!;
 
         foreach (var step in _steps)
         {
-            output = await step.ProcessAsync(current, cancellationToken);
-            current = (TInput)(object)output!;
+            result = await step.ProcessAsync(current, cancellationToken);
+            if (result is TInput nextInput)
+            {
+                current = nextInput;
+            }
+            else
+            {
+                break;
+            }
         }
 
-        return output;
+        return result ?? throw new InvalidOperationException("管道处理结果不能为 null");
     }
 
     public async Task<TOutput> ProcessWithErrorHandlingAsync(TInput input, CancellationToken cancellationToken)
@@ -66,8 +157,8 @@ public class Pipeline<TInput, TOutput> : IPipelineStep<TInput, TOutput>
         }
         catch (Exception ex)
         {
-            _logger.LogError(ex, "Error in pipeline processing");
-            throw new PipelineException("Pipeline processing failed", ex);
+            _logger.LogError(ex, "管道处理发生错误");
+            throw new PipelineException("管道处理失败", ex);
         }
     }
 } 
\ No newline at end of file
diff --git a/src/CellularManagement.WebSocket/Pipeline/Steps/MessageRoutingStep.cs b/src/CellularManagement.WebSocket/Pipeline/Steps/MessageRoutingStep.cs
index f215798..e1ef525 100644
--- a/src/CellularManagement.WebSocket/Pipeline/Steps/MessageRoutingStep.cs
+++ b/src/CellularManagement.WebSocket/Pipeline/Steps/MessageRoutingStep.cs
@@ -4,6 +4,10 @@ using Microsoft.Extensions.Logging;
 
 namespace CellularManagement.WebSocket.Pipeline.Steps;
 
+/// <summary>
+/// 消息路由步骤
+/// 负责根据消息类型将消息路由到相应的处理器
+/// </summary>
 public class MessageRoutingStep : IPipelineStep<WebSocketMessage, WebSocketMessage>
 {
     private readonly ILogger<MessageRoutingStep> _logger;
@@ -19,19 +23,35 @@ public class MessageRoutingStep : IPipelineStep<WebSocketMessage, WebSocketMessa
         {
             PropertyNameCaseInsensitive = true
         };
+        _logger.LogInformation("初始化消息路由步骤");
     }
 
+    /// <summary>
+    /// 注册消息处理器
+    /// </summary>
+    /// <param name="messageType">消息类型</param>
+    /// <param name="handler">消息处理器</param>
     public void RegisterHandler(string messageType, Func<WebSocketMessage, Task<WebSocketMessage>> handler)
     {
+        _logger.LogInformation("注册消息处理器，消息类型：{MessageType}，处理器类型：{HandlerType}", 
+            messageType, handler.Method.DeclaringType?.Name);
+
         if (!_handlers.ContainsKey(messageType))
         {
             _handlers[messageType] = new List<Func<WebSocketMessage, Task<WebSocketMessage>>>();
         }
         _handlers[messageType].Add(handler);
+        _logger.LogDebug("消息处理器注册完成，当前处理器数量：{HandlerCount}", _handlers[messageType].Count);
     }
 
+    /// <summary>
+    /// 处理消息
+    /// </summary>
     public async Task<WebSocketMessage> ProcessAsync(WebSocketMessage input, CancellationToken cancellationToken)
     {
+        _logger.LogDebug("开始路由消息，连接ID：{ConnectionId}，消息类型：{MessageType}，数据大小：{DataSize}字节",
+            input.ConnectionId, input.MessageType, input.Data.Length);
+
         try
         {
             var messageText = System.Text.Encoding.UTF8.GetString(input.Data);
@@ -39,48 +59,63 @@ public class MessageRoutingStep : IPipelineStep<WebSocketMessage, WebSocketMessa
 
             if (message == null || !message.TryGetValue("type", out var typeObj))
             {
-                throw new InvalidOperationException("Message type not found");
+                _logger.LogWarning("消息缺少类型字段，连接ID：{ConnectionId}", input.ConnectionId);
+                throw new InvalidOperationException("消息类型未找到");
             }
 
             var messageType = typeObj.ToString();
             if (string.IsNullOrEmpty(messageType))
             {
-                throw new InvalidOperationException("Invalid message type");
+                _logger.LogWarning("消息类型为空，连接ID：{ConnectionId}", input.ConnectionId);
+                throw new InvalidOperationException("无效的消息类型");
             }
 
-            if (!_handlers.TryGetValue(messageType, out var handlers) || handlers.Count == 0)
+            if (!_handlers.ContainsKey(messageType))
             {
-                throw new InvalidOperationException($"No handler registered for message type: {messageType}");
+                _logger.LogWarning("未找到消息类型的处理器，消息类型：{MessageType}，连接ID：{ConnectionId}", 
+                    messageType, input.ConnectionId);
+                throw new InvalidOperationException($"未找到消息类型 {messageType} 的处理器");
             }
 
-            // 使用轮询策略选择处理器
-            var handler = GetNextHandler(handlers);
-            return await handler(input);
+            // 轮询选择处理器
+            var handlers = _handlers[messageType];
+            var handler = handlers[_currentHandlerIndex % handlers.Count];
+            _currentHandlerIndex = (_currentHandlerIndex + 1) % handlers.Count;
+
+            _logger.LogDebug("选择消息处理器，消息类型：{MessageType}，处理器索引：{HandlerIndex}，连接ID：{ConnectionId}", 
+                messageType, _currentHandlerIndex, input.ConnectionId);
+
+            var result = await handler(input);
+            _logger.LogDebug("消息处理完成，连接ID：{ConnectionId}，消息类型：{MessageType}", 
+                input.ConnectionId, messageType);
+
+            return result;
         }
-        catch (Exception ex)
+        catch (JsonException ex)
         {
-            _logger.LogError(ex, "Message routing failed for connection {ConnectionId}", input.ConnectionId);
-            throw;
+            _logger.LogError(ex, "消息JSON解析失败，连接ID：{ConnectionId}，错误信息：{ErrorMessage}", 
+                input.ConnectionId, ex.Message);
+            throw new InvalidOperationException("消息格式无效：JSON解析失败", ex);
         }
     }
 
+    /// <summary>
+    /// 处理消息（带错误处理）
+    /// </summary>
     public async Task<WebSocketMessage> ProcessWithErrorHandlingAsync(WebSocketMessage input, CancellationToken cancellationToken)
     {
+        _logger.LogDebug("开始路由消息（带错误处理），连接ID：{ConnectionId}", input.ConnectionId);
         try
         {
-            return await ProcessAsync(input, cancellationToken);
+            var result = await ProcessAsync(input, cancellationToken);
+            _logger.LogDebug("消息路由完成（带错误处理），连接ID：{ConnectionId}", input.ConnectionId);
+            return result;
         }
         catch (Exception ex)
         {
-            _logger.LogError(ex, "Error in message routing for connection {ConnectionId}", input.ConnectionId);
-            throw new PipelineException("Message routing failed", ex);
+            _logger.LogError(ex, "消息路由失败，连接ID：{ConnectionId}，错误信息：{ErrorMessage}", 
+                input.ConnectionId, ex.Message);
+            throw;
         }
     }
-
-    private Func<WebSocketMessage, Task<WebSocketMessage>> GetNextHandler(List<Func<WebSocketMessage, Task<WebSocketMessage>>> handlers)
-    {
-        // 使用轮询策略选择处理器
-        var index = Interlocked.Increment(ref _currentHandlerIndex) % handlers.Count;
-        return handlers[index];
-    }
 } 
\ No newline at end of file
diff --git a/src/CellularManagement.WebSocket/Services/WebSocketMessageService.cs b/src/CellularManagement.WebSocket/Services/WebSocketMessageService.cs
index 9af6bb9..5c67e39 100644
--- a/src/CellularManagement.WebSocket/Services/WebSocketMessageService.cs
+++ b/src/CellularManagement.WebSocket/Services/WebSocketMessageService.cs
@@ -7,6 +7,10 @@ using Microsoft.Extensions.Logging;
 
 namespace CellularManagement.WebSocket.Services;
 
+/// <summary>
+/// WebSocket 消息服务
+/// 负责处理 WebSocket 消息的接收、处理和发送
+/// </summary>
 public class WebSocketMessageService : BackgroundService
 {
     private readonly WebSocketConnectionManager _connectionManager;
@@ -23,8 +27,11 @@ public class WebSocketMessageService : BackgroundService
     {
         _connectionManager = connectionManager;
         _logger = logger;
+        _logger.LogInformation("初始化 WebSocket 消息服务");
+
         _routingStep = new MessageRoutingStep(loggerFactory.CreateLogger<MessageRoutingStep>());
         _processingSemaphore = new SemaphoreSlim(_maxConcurrentProcesses);
+        _logger.LogInformation("创建消息处理信号量，最大并发数：{MaxConcurrentProcesses}", _maxConcurrentProcesses);
 
         // 构建处理管道
         var pipelineBuilder = new PipelineBuilder<WebSocketMessage, WebSocketMessage>(loggerFactory);
@@ -32,53 +39,115 @@ public class WebSocketMessageService : BackgroundService
             .AddStep(new MessageValidationStep(loggerFactory.CreateLogger<MessageValidationStep>()))
             .AddStep(_routingStep)
             .Build();
+        _logger.LogInformation("消息处理管道构建完成");
+
+        // 订阅消息到达事件
+        _connectionManager.OnMessageReceived += ProcessMessageAsync;
+        _logger.LogInformation("已订阅消息到达事件");
     }
 
+    /// <summary>
+    /// 注册消息处理器
+    /// </summary>
     public void RegisterMessageHandler(string messageType, Func<WebSocketMessage, Task<WebSocketMessage>> handler)
     {
+        _logger.LogInformation("注册消息处理器，消息类型：{MessageType}", messageType);
         _routingStep.RegisterHandler(messageType, handler);
     }
 
+    /// <summary>
+    /// 执行后台服务
+    /// 负责处理出站消息的发送
+    /// </summary>
     protected override async Task ExecuteAsync(CancellationToken stoppingToken)
     {
+        _logger.LogInformation("WebSocket 消息服务开始运行");
         try
         {
-            await foreach (var message in _connectionManager.ReadIncomingMessagesAsync(stoppingToken))
+            // 处理出站消息
+            await foreach (var message in _connectionManager.ReadOutgoingMessagesAsync(stoppingToken))
             {
-                await ProcessMessageAsync(message, stoppingToken);
+                try
+                {
+                    _logger.LogDebug("开始处理出站消息，连接ID：{ConnectionId}，消息类型：{MessageType}，数据大小：{DataSize}字节",
+                        message.ConnectionId, message.MessageType, message.Data.Length);
+
+                    var connection = _connectionManager.GetConnection(message.ConnectionId);
+                    if (connection?.Socket.State == System.Net.WebSockets.WebSocketState.Open)
+                    {
+                        await connection.Socket.SendAsync(
+                            new ArraySegment<byte>(message.Data),
+                            message.MessageType,
+                            true,
+                            stoppingToken);
+                        _logger.LogDebug("消息发送成功，连接ID：{ConnectionId}", message.ConnectionId);
+                    }
+                    else
+                    {
+                        _logger.LogWarning("消息发送失败，连接不存在或已关闭，连接ID：{ConnectionId}", message.ConnectionId);
+                    }
+                }
+                catch (Exception ex)
+                {
+                    _logger.LogError(ex, "发送消息时发生错误，连接ID：{ConnectionId}", message.ConnectionId);
+                }
             }
         }
         catch (OperationCanceledException)
         {
-            _logger.LogInformation("Message processing service is stopping");
+            _logger.LogInformation("WebSocket 消息服务正在停止");
         }
         catch (Exception ex)
         {
-            _logger.LogError(ex, "Error in message processing service");
+            _logger.LogError(ex, "WebSocket 消息服务发生错误");
+        }
+        finally
+        {
+            _logger.LogInformation("WebSocket 消息服务已停止");
         }
     }
 
-    private async Task ProcessMessageAsync(WebSocketMessage message, CancellationToken cancellationToken)
+    /// <summary>
+    /// 处理消息
+    /// </summary>
+    private async Task ProcessMessageAsync(WebSocketMessage message)
     {
-        await _processingSemaphore.WaitAsync(cancellationToken);
+        _logger.LogDebug("开始处理消息，连接ID：{ConnectionId}，消息类型：{MessageType}，数据大小：{DataSize}字节",
+            message.ConnectionId, message.MessageType, message.Data.Length);
+
+        await _processingSemaphore.WaitAsync();
         try
         {
-            var processedMessage = await _pipeline.ProcessWithErrorHandlingAsync(message, cancellationToken);
-            await _connectionManager.QueueOutgoingMessage(processedMessage);
+            var processedMessage = await _pipeline.ProcessWithErrorHandlingAsync(message, CancellationToken.None);
+            _logger.LogDebug("消息处理完成，连接ID：{ConnectionId}，处理结果：{Processed}",
+                message.ConnectionId, processedMessage != null);
+
+            if (processedMessage != null)
+            {
+                await _connectionManager.QueueOutgoingMessage(processedMessage);
+                _logger.LogDebug("处理后的消息已入队，连接ID：{ConnectionId}", message.ConnectionId);
+            }
         }
         catch (Exception ex)
         {
-            _logger.LogError(ex, "Error processing message for connection {ConnectionId}", message.ConnectionId);
+            _logger.LogError(ex, "处理消息时发生错误，连接ID：{ConnectionId}", message.ConnectionId);
             await HandleProcessingError(message, ex);
         }
         finally
         {
             _processingSemaphore.Release();
+            _logger.LogDebug("消息处理完成，释放信号量，连接ID：{ConnectionId}", message.ConnectionId);
         }
     }
 
+    /// <summary>
+    /// 处理错误
+    /// </summary>
     private async Task HandleProcessingError(WebSocketMessage message, Exception exception)
     {
+        _logger.LogError(exception, "处理消息错误，连接ID：{ConnectionId}，错误信息：{ErrorMessage}",
+            message.ConnectionId, exception.Message);
+
         try
         {
             var errorResponse = new WebSocketMessage
@@ -93,16 +162,21 @@ public class WebSocketMessageService : BackgroundService
             };
 
             await _connectionManager.QueueOutgoingMessage(errorResponse);
+            _logger.LogDebug("错误响应已发送，连接ID：{ConnectionId}", message.ConnectionId);
         }
         catch (Exception ex)
         {
-            _logger.LogError(ex, "Error sending error response for connection {ConnectionId}", message.ConnectionId);
+            _logger.LogError(ex, "发送错误响应时发生错误，连接ID：{ConnectionId}", message.ConnectionId);
         }
     }
 
     public override void Dispose()
     {
+        _logger.LogInformation("正在释放 WebSocket 消息服务资源");
+        // 取消订阅事件
+        _connectionManager.OnMessageReceived -= ProcessMessageAsync;
         _processingSemaphore.Dispose();
         base.Dispose();
+        _logger.LogInformation("WebSocket 消息服务资源已释放");
     }
 } 
\ No newline at end of file