Add reload support

(cherry picked from commit e98000c371)

adapter/router.go

@@ -71,6 +71,8 @@ type Router interface {
 	SetV2RayServer(server V2RayServer)
 
 	ResetNetwork() error
+
+	Reload()
 }
 
 func ContextWithRouter(ctx context.Context, router Router) context.Context {

box.go

@@ -40,6 +40,7 @@ type Box struct {
 	preServices1 map[string]adapter.Service
 	preServices2 map[string]adapter.Service
 	postServices map[string]adapter.Service
+	reloadChan   chan struct{}
 	done         chan struct{}
 }
 
@@ -52,6 +53,7 @@ type Options struct {
 
 func New(options Options) (*Box, error) {
 	createdAt := time.Now()
+	reloadChan := make(chan struct{}, 1)
 	ctx := options.Context
 	if ctx == nil {
 		ctx = context.Background()
@@ -95,6 +97,7 @@ func New(options Options) (*Box, error) {
 		common.PtrValueOrDefault(options.NTP),
 		options.Inbounds,
 		options.PlatformInterface,
+		reloadChan,
 	)
 	if err != nil {
 		return nil, E.Cause(err, "parse route options")
@@ -218,6 +221,7 @@ func New(options Options) (*Box, error) {
 		preServices1: preServices1,
 		preServices2: preServices2,
 		postServices: postServices,
+		reloadChan:   reloadChan,
 		done:         make(chan struct{}),
 	}, nil
 }
@@ -462,3 +466,7 @@ func (s *Box) Close() error {
 func (s *Box) Router() adapter.Router {
 	return s.router
 }
+
+func (s *Box) ReloadChan() <-chan struct{} {
+	return s.reloadChan
+}

cmd/sing-box/cmd_run.go

@@ -177,20 +177,31 @@ func run() error {
 		}
 		runtimeDebug.FreeOSMemory()
 		for {
-			osSignal := <-osSignals
+			reloadTag := false
+			select {
+			case osSignal := <-osSignals:
 				if osSignal == syscall.SIGHUP {
 					err = check()
 					if err != nil {
 						log.Error(E.Cause(err, "reload service"))
 						continue
 					}
+					reloadTag = true
+				}
+			case <-instance.ReloadChan():
+				err = check()
+				if err != nil {
+					log.Error(E.Cause(err, "reload service"))
+					continue
+				}
+				reloadTag = true
 			}
 			cancel()
 			closeCtx, closed := context.WithCancel(context.Background())
 			go closeMonitor(closeCtx)
 			err = instance.Close()
 			closed()
-			if osSignal != syscall.SIGHUP {
+			if !reloadTag {
 				if err != nil {
 					log.Error(E.Cause(err, "sing-box did not closed properly"))
 				}

experimental/clashapi/configs.go

@@ -12,7 +12,8 @@ import (
 func configRouter(server *Server, logFactory log.Factory) http.Handler {
 	r := chi.NewRouter()
 	r.Get("/", getConfigs(server, logFactory))
-	r.Put("/", updateConfigs)
+	// r.Put("/", updateConfigs)
+	r.Put("/", reload(server))
 	r.Patch("/", patchConfigs(server))
 	return r
 }

experimental/clashapi/reload.go

@@ -0,0 +1,19 @@
+//go:build !ios
+
+package clashapi
+
+import (
+	"net/http"
+
+	"github.com/go-chi/render"
+)
+
+func reload(server *Server) func(w http.ResponseWriter, r *http.Request) {
+	return func(w http.ResponseWriter, r *http.Request) {
+		defer func() {
+			server.logger.Warn("sing-box restarting...")
+			server.router.Reload()
+		}()
+		render.NoContent(w, r)
+	}
+}

experimental/clashapi/reload_stub.go

@@ -0,0 +1,19 @@
+//go:build ios
+
+package clashapi
+
+import (
+	"net/http"
+
+	"github.com/go-chi/render"
+)
+
+var ErrOSNotSupported = &HTTPError{
+	Message: "OS not supported",
+}
+
+func reload(server *Server) func(w http.ResponseWriter, r *http.Request) {
+	return func(w http.ResponseWriter, r *http.Request) {
+		render.JSON(w, r, ErrOSNotSupported)
+	}
+}

route/router.go

@@ -100,6 +100,7 @@ type Router struct {
 	needPackageManager                 bool
 	wifiState                          adapter.WIFIState
 	started                            bool
+	reloadChan                         chan<- struct{}
 }
 
 func NewRouter(
@@ -110,6 +111,7 @@ func NewRouter(
 	ntpOptions option.NTPOptions,
 	inbounds []option.Inbound,
 	platformInterface platform.Interface,
+	reloadChan chan<- struct{},
 ) (*Router, error) {
 	router := &Router{
 		ctx:                   ctx,
@@ -138,6 +140,7 @@ func NewRouter(
 		needPackageManager: common.Any(inbounds, func(inbound option.Inbound) bool {
 			return len(inbound.TunOptions.IncludePackage) > 0 || len(inbound.TunOptions.ExcludePackage) > 0
 		}),
+		reloadChan: reloadChan,
 	}
 	router.dnsClient = dns.NewClient(dns.ClientOptions{
 		DisableCache:     dnsOptions.DNSClientOptions.DisableCache,
@@ -1438,3 +1441,12 @@ func (r *Router) notifyWindowsPowerEvent(event int) {
 		_ = r.ResetNetwork()
 	}
 }
+
+func (r *Router) Reload() {
+	if r.platformInterface == nil {
+		select {
+		case r.reloadChan <- struct{}{}:
+		default:
+		}
+	}
+}