feat.尝试弄了AOT的启动器。

LanMountainDesktop/Services/Launcher/LauncherIpcClient.cs

@@ -1,3 +1,5 @@
+using System.Buffers;
+using System.Diagnostics;
 using System.IO.Pipes;
 using System.Text.Json;
 using LanMountainDesktop.Shared.Contracts.Launcher;
@@ -6,12 +8,20 @@ namespace LanMountainDesktop.Services.Launcher;
 
 /// <summary>
 /// Launcher IPC 客户端 - 向 Launcher 报告启动进度
+/// 采用持久连接 + 长度前缀协议，在同一连接上可多次发送消息。
+/// 跨平台实现：Windows 使用命名管道，Linux/macOS 使用 Unix 域套接字
 /// </summary>
 public class LauncherIpcClient : IDisposable
 {
     private NamedPipeClientStream? _pipeClient;
     private bool _isConnected;
-    
+    private readonly object _writeLock = new();
+
+    /// <summary>
+    /// 协议：每条消息以 4 字节小端 int32 长度前缀开头，后跟 UTF-8 JSON 正文。
+    /// </summary>
+    private const int LengthPrefixSize = 4;
+
     /// <summary>
     /// 连接到 Launcher 的 IPC 服务端
     /// </summary>
@@ -23,7 +33,7 @@ public class LauncherIpcClient : IDisposable
                 ".",
                 LauncherIpcConstants.PipeName,
                 PipeDirection.Out);
-            
+
             await _pipeClient.ConnectAsync(5000, cancellationToken);
             _isConnected = true;
             return true;
@@ -39,21 +49,34 @@ public class LauncherIpcClient : IDisposable
             return false;
         }
     }
-    
+
     /// <summary>
-    /// 报告启动进度
+    /// 报告启动进度（在同一连接上可多次调用）
     /// </summary>
     public async Task ReportProgressAsync(StartupProgressMessage message)
     {
         if (!_isConnected || _pipeClient?.IsConnected != true)
             return;
-        
+
         try
         {
             var json = JsonSerializer.Serialize(message);
-            using var writer = new StreamWriter(_pipeClient, leaveOpen: true);
-            await writer.WriteAsync(json);
-            await writer.FlushAsync();
+            var payload = System.Text.Encoding.UTF8.GetBytes(json);
+
+            // 长度前缀协议：[4字节长度][消息正文]
+            var lengthPrefix = BitConverter.GetBytes(payload.Length);
+            Debug.Assert(lengthPrefix.Length == LengthPrefixSize);
+
+            // 加锁保证单条消息的长度前缀和正文原子写入
+            lock (_writeLock)
+            {
+                _pipeClient.Write(lengthPrefix, 0, LengthPrefixSize);
+                _pipeClient.Write(payload, 0, payload.Length);
+                _pipeClient.Flush();
+            }
+
+            // 将同步写入包装为已完成的 Task
+            await Task.CompletedTask;
         }
         catch (IOException)
         {
@@ -63,9 +86,10 @@ public class LauncherIpcClient : IDisposable
         catch (Exception ex)
         {
             AppLogger.Warn("LauncherIpc", $"Failed to report progress: {ex.Message}");
+            _isConnected = false;
         }
     }
-    
+
     /// <summary>
     /// 检查是否从 Launcher 启动
     /// </summary>
@@ -74,9 +98,10 @@ public class LauncherIpcClient : IDisposable
         return !string.IsNullOrEmpty(
             Environment.GetEnvironmentVariable(LauncherIpcConstants.LauncherPidEnvVar));
     }
-    
+
     public void Dispose()
     {
+        _isConnected = false;
         _pipeClient?.Dispose();
     }
 }