platform: Improve stop on apple platforms

experimental/libbox/command.go

@@ -4,6 +4,7 @@ const (
 	CommandLog int32 = iota
 	CommandStatus
 	CommandServiceReload
+	CommandServiceClose
 	CommandCloseConnections
 	CommandGroup
 	CommandSelectOutbound

experimental/libbox/command_power.go

@@ -44,3 +44,41 @@ func (s *CommandServer) handleServiceReload(conn net.Conn) error {
 	}
 	return nil
 }
+
+func (c *CommandClient) ServiceClose() error {
+	conn, err := c.directConnect()
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
+	err = binary.Write(conn, binary.BigEndian, uint8(CommandServiceClose))
+	if err != nil {
+		return err
+	}
+	var hasError bool
+	err = binary.Read(conn, binary.BigEndian, &hasError)
+	if err != nil {
+		return nil
+	}
+	if hasError {
+		errorMessage, err := rw.ReadVString(conn)
+		if err != nil {
+			return nil
+		}
+		return E.New(errorMessage)
+	}
+	return nil
+}
+
+func (s *CommandServer) handleServiceClose(conn net.Conn) error {
+	rErr := s.service.Close()
+	s.handler.PostServiceClose()
+	err := binary.Write(conn, binary.BigEndian, rErr != nil)
+	if err != nil {
+		return err
+	}
+	if rErr != nil {
+		return rw.WriteVString(conn, rErr.Error())
+	}
+	return nil
+}

experimental/libbox/command_server.go

@@ -37,6 +37,7 @@ type CommandServer struct {
 
 type CommandServerHandler interface {
 	ServiceReload() error
+	PostServiceClose()
 	GetSystemProxyStatus() *SystemProxyStatus
 	SetSystemProxyEnabled(isEnabled bool) error
 }
@@ -155,6 +156,8 @@ func (s *CommandServer) handleConnection(conn net.Conn) error {
 		return s.handleStatusConn(conn)
 	case CommandServiceReload:
 		return s.handleServiceReload(conn)
+	case CommandServiceClose:
+		return s.handleServiceClose(conn)
 	case CommandCloseConnections:
 		return s.handleCloseConnections(conn)
 	case CommandGroup:

experimental/libbox/service.go

@@ -3,14 +3,17 @@ package libbox
 import (
 	"context"
 	"net/netip"
+	"os"
 	"runtime"
 	runtimeDebug "runtime/debug"
 	"syscall"
+	"time"
 
 	"github.com/sagernet/sing-box"
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/process"
 	"github.com/sagernet/sing-box/common/urltest"
+	C "github.com/sagernet/sing-box/constant"
 	"github.com/sagernet/sing-box/experimental/libbox/internal/procfs"
 	"github.com/sagernet/sing-box/experimental/libbox/platform"
 	"github.com/sagernet/sing-box/log"
@@ -72,6 +75,16 @@ func (s *BoxService) Start() error {
 }
 
 func (s *BoxService) Close() error {
+	done := make(chan struct{})
+	defer close(done)
+	go func() {
+		select {
+		case <-done:
+			return
+		case <-time.After(C.DefaultStopFatalTimeout):
+			os.Exit(1)
+		}
+	}()
 	s.cancel()
 	s.urlTestHistoryStorage.Close()
 	return s.instance.Close()