部分逻辑优化，涉及进程检测代码

internal/process/manager.go

@@ -17,6 +17,7 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"runtime"
 	"strconv"
 	"strings"
 	"sync"
@@ -31,11 +32,15 @@ import (
 const (
 	LockFileName       = ".frpc.lock"
 	PortCheckTimeout   = 500 * time.Millisecond
-	StartWaitTime      = 500 * time.Millisecond
 	StopMaxWaitTime    = 5 * time.Second
 	LockAcquireTimeout = 30 * time.Second
 	LockRetryInterval  = 100 * time.Millisecond
 	APITimeout         = 2 * time.Second
+
+	// 启动检测参数
+	StartupMaxAttempts = 25                     // 最多检测 25 次
+	StartupRetryDelay  = 200 * time.Millisecond // 每次间隔 200ms
+	// 总超时 = 25 * 200ms = 5 秒
 )
 
 // ================================================================
@@ -115,7 +120,7 @@ func (pm *ProcessManager) AdminPort() int {
 }
 
 // ================================================================
-// 配置读取 (带调试日志)
+// 配置读取
 // ================================================================
 
 func (pm *ProcessManager) LoadConfig() error {
@@ -390,6 +395,32 @@ func (pm *ProcessManager) isFRPCProcess(pid int) (bool, string) {
 	return false, ""
 }
 
+// ================================================================
+// 进程存活检测
+// ================================================================
+
+// isProcessAlive 检查 PID 对应的进程是否存活
+func (pm *ProcessManager) isProcessAlive(pid int) bool {
+	if pid <= 0 {
+		return false
+	}
+
+	if runtime.GOOS == "windows" {
+		cmd := exec.Command("tasklist", "/FI", "PID eq", strconv.Itoa(pid))
+		output, err := cmd.CombinedOutput()
+		if err != nil {
+			return false
+		}
+		return strings.Contains(string(output), strconv.Itoa(pid))
+	}
+
+	process, err := os.FindProcess(pid)
+	if err != nil {
+		return false
+	}
+	return process.Signal(syscall.Signal(0)) == nil
+}
+
 // ================================================================
 // PID 文件操作
 // ================================================================
@@ -525,19 +556,46 @@ func (pm *ProcessManager) startLocked(ctx context.Context) error {
 	if err := cmd.Start(); err != nil {
 		return fmt.Errorf("启动 frpc 失败: %w", err)
 	}
-	time.Sleep(StartWaitTime)
-	occupied, err := pm.CheckPort()
-	if err != nil {
-		return fmt.Errorf("验证启动状态失败: %w", err)
+
+	// ============================================================
+	// 组合状态检测：最多等待 5 秒，三条件全部满足才算成功
+	// ============================================================
+	for attempt := 0; attempt < StartupMaxAttempts; attempt++ {
+		// 条件1: 检查 PID 文件
+		pid := pm.readPIDFile()
+		if pid <= 0 {
+			time.Sleep(StartupRetryDelay)
+			continue
+		}
+
+		// 条件2: 检查进程是否存活
+		if !pm.isProcessAlive(pid) {
+			time.Sleep(StartupRetryDelay)
+			continue
+		}
+
+		// 条件3: 检查端口是否可连接
+		occupied, err := pm.CheckPort()
+		if err == nil && occupied {
+			// 三项全部满足！
+			pm.writePIDFile(pid)
+			log.Printf("[INFO] frpc 启动成功 (PID: %d, 端口: %d)，耗时 %dms",
+				pid, pm.adminPort, attempt*int(StartupRetryDelay/time.Millisecond))
+			return nil
+		}
+
+		time.Sleep(StartupRetryDelay)
 	}
-	if !occupied {
-		return fmt.Errorf("frpc 启动失败: 端口未监听")
-	}
-	pid, _ := pm.getPIDByPort(pm.adminPort)
+
+	// 超时：输出诊断信息
+	pid := pm.readPIDFile()
 	if pid > 0 {
-		pm.writePIDFile(pid)
+		alive := pm.isProcessAlive(pid)
+		occupied, _ := pm.CheckPort()
+		return fmt.Errorf("frpc 启动超时: PID=%d, 进程存活=%v, 端口监听=%v", pid, alive, occupied)
 	}
-	return nil
+
+	return fmt.Errorf("frpc 启动超时: 未生成 PID 文件")
 }
 
 func (pm *ProcessManager) Stop(ctx context.Context) error {
@@ -548,7 +606,7 @@ func (pm *ProcessManager) Stop(ctx context.Context) error {
 	return pm.stopLocked(ctx)
 }
 
-func (pm *ProcessManager) stopLocked(ctx context.Context) error {
+func (pm *ProcessManager) stopLocked(_ context.Context) error {
 	portStatus, err := pm.GetPortStatus()
 	if err != nil {
 		return fmt.Errorf("检测端口状态失败: %w", err)
@@ -569,6 +627,8 @@ func (pm *ProcessManager) stopLocked(ctx context.Context) error {
 			return fmt.Errorf("无法确定 frpc 进程 PID")
 		}
 	}
+
+	// 发送 SIGTERM (优雅停止)
 	proc, err := os.FindProcess(pid)
 	if err != nil {
 		pm.deletePIDFile()
@@ -578,6 +638,8 @@ func (pm *ProcessManager) stopLocked(ctx context.Context) error {
 		pm.deletePIDFile()
 		return nil
 	}
+
+	// 等待端口释放
 	start := time.Now()
 	for time.Since(start) < StopMaxWaitTime {
 		occupied, _ := pm.CheckPort()
@@ -587,11 +649,20 @@ func (pm *ProcessManager) stopLocked(ctx context.Context) error {
 		}
 		time.Sleep(200 * time.Millisecond)
 	}
-	proc.Kill()
+
+	// 端口未释放, 强制 kill
+	if runtime.GOOS == "windows" {
+		cmd := exec.Command("taskkill", "/F", "/IM", "frpc.exe")
+		cmd.Run()
+	} else {
+		proc.Kill()
+	}
 	time.Sleep(500 * time.Millisecond)
+
 	if occupied, _ := pm.CheckPort(); occupied {
 		return fmt.Errorf("强制停止失败: 端口仍被占用")
 	}
+
 	pm.deletePIDFile()
 	return nil
 }
@@ -604,6 +675,8 @@ func (pm *ProcessManager) Restart(ctx context.Context) error {
 	if err := pm.stopLocked(ctx); err != nil {
 		return fmt.Errorf("停止失败: %w", err)
 	}
+	// 等待端口完全释放
+	time.Sleep(1 * time.Second)
 	if err := pm.startLocked(ctx); err != nil {
 		return fmt.Errorf("启动失败: %w", err)
 	}