diff --git a/common/dialer/conntrack/track.go b/common/dialer/conntrack/track.go
index 3de0b8eb..2c3e328b 100644
--- a/common/dialer/conntrack/track.go
+++ b/common/dialer/conntrack/track.go
@@ -14,10 +14,16 @@ var (
 )
 
 func Count() int {
+	if !Enabled {
+		return 0
+	}
 	return openConnection.Len()
 }
 
 func List() []io.Closer {
+	if !Enabled {
+		return nil
+	}
 	connAccess.RLock()
 	defer connAccess.RUnlock()
 	connList := make([]io.Closer, 0, openConnection.Len())
@@ -28,6 +34,9 @@ func List() []io.Closer {
 }
 
 func Close() {
+	if !Enabled {
+		return
+	}
 	connAccess.Lock()
 	defer connAccess.Unlock()
 	for element := openConnection.Front(); element != nil; element = element.Next() {
diff --git a/experimental/libbox/command.go b/experimental/libbox/command.go
index f42b302d..5f344d10 100644
--- a/experimental/libbox/command.go
+++ b/experimental/libbox/command.go
@@ -1,5 +1,3 @@
-//go:build darwin
-
 package libbox
 
 const (
diff --git a/experimental/libbox/command_client.go b/experimental/libbox/command_client.go
index 4a2915a0..f48df1af 100644
--- a/experimental/libbox/command_client.go
+++ b/experimental/libbox/command_client.go
@@ -1,5 +1,3 @@
-//go:build darwin
-
 package libbox
 
 import (
@@ -46,6 +44,7 @@ func clientConnect(sharedDirectory string) (net.Conn, error) {
 }
 
 func (c *CommandClient) Connect() error {
+	common.Close(c.conn)
 	conn, err := clientConnect(c.sharedDirectory)
 	if err != nil {
 		return err
diff --git a/experimental/libbox/command_conntrack.go b/experimental/libbox/command_conntrack.go
index a062a12f..c7f24199 100644
--- a/experimental/libbox/command_conntrack.go
+++ b/experimental/libbox/command_conntrack.go
@@ -1,5 +1,3 @@
-//go:build darwin
-
 package libbox
 
 import (
diff --git a/experimental/libbox/command_log.go b/experimental/libbox/command_log.go
index c8c7a3e2..b70e9884 100644
--- a/experimental/libbox/command_log.go
+++ b/experimental/libbox/command_log.go
@@ -1,5 +1,3 @@
-//go:build darwin
-
 package libbox
 
 import (
diff --git a/experimental/libbox/command_reload.go b/experimental/libbox/command_reload.go
index 81e00fe2..19ac0264 100644
--- a/experimental/libbox/command_reload.go
+++ b/experimental/libbox/command_reload.go
@@ -1,5 +1,3 @@
-//go:build darwin
-
 package libbox
 
 import (
diff --git a/experimental/libbox/command_server.go b/experimental/libbox/command_server.go
index a04be839..4ca1429c 100644
--- a/experimental/libbox/command_server.go
+++ b/experimental/libbox/command_server.go
@@ -1,5 +1,3 @@
-//go:build darwin
-
 package libbox
 
 import (
@@ -10,6 +8,7 @@ import (
 	"sync"
 
 	"github.com/sagernet/sing-box/log"
+	"github.com/sagernet/sing/common"
 	E "github.com/sagernet/sing/common/exceptions"
 	"github.com/sagernet/sing/common/observable"
 	"github.com/sagernet/sing/common/x/list"
@@ -57,7 +56,10 @@ func (s *CommandServer) Start() error {
 }
 
 func (s *CommandServer) Close() error {
-	return s.listener.Close()
+	return common.Close(
+		s.listener,
+		s.observer,
+	)
 }
 
 func (s *CommandServer) loopConnection(listener net.Listener) {
diff --git a/experimental/libbox/command_status.go b/experimental/libbox/command_status.go
index 4d18063e..ac088a68 100644
--- a/experimental/libbox/command_status.go
+++ b/experimental/libbox/command_status.go
@@ -1,5 +1,3 @@
-//go:build darwin
-
 package libbox
 
 import (
diff --git a/experimental/libbox/command_stop.go b/experimental/libbox/command_stop.go
index 13048d05..8609b99a 100644
--- a/experimental/libbox/command_stop.go
+++ b/experimental/libbox/command_stop.go
@@ -1,5 +1,3 @@
-//go:build darwin
-
 package libbox
 
 import (
diff --git a/experimental/libbox/config.go b/experimental/libbox/config.go
index 3a2f1ad9..66651b60 100644
--- a/experimental/libbox/config.go
+++ b/experimental/libbox/config.go
@@ -1,9 +1,9 @@
-//go:build linux || darwin
-
 package libbox
 
 import (
+	"bytes"
 	"context"
+	"encoding/json"
 
 	"github.com/sagernet/sing-box"
 	"github.com/sagernet/sing-box/option"
@@ -35,3 +35,19 @@ func CheckConfig(configContent string) error {
 	}
 	return err
 }
+
+func FormatConfig(configContent string) (string, error) {
+	options, err := parseConfig(configContent)
+	if err != nil {
+		return "", err
+	}
+	var buffer bytes.Buffer
+	json.NewEncoder(&buffer)
+	encoder := json.NewEncoder(&buffer)
+	encoder.SetIndent("", "  ")
+	err = encoder.Encode(options)
+	if err != nil {
+		return "", err
+	}
+	return buffer.String(), nil
+}
diff --git a/experimental/libbox/iterator.go b/experimental/libbox/iterator.go
index a11133be..e23e2a7f 100644
--- a/experimental/libbox/iterator.go
+++ b/experimental/libbox/iterator.go
@@ -1,5 +1,3 @@
-//go:build linux || darwin
-
 package libbox
 
 import "github.com/sagernet/sing/common"
diff --git a/experimental/libbox/platform.go b/experimental/libbox/platform.go
index 5c8bb0ec..09195525 100644
--- a/experimental/libbox/platform.go
+++ b/experimental/libbox/platform.go
@@ -1,5 +1,3 @@
-//go:build linux || darwin
-
 package libbox
 
 import "github.com/sagernet/sing-box/option"
diff --git a/experimental/libbox/pprof.go b/experimental/libbox/pprof.go
index c451dce0..d6d07800 100644
--- a/experimental/libbox/pprof.go
+++ b/experimental/libbox/pprof.go
@@ -1,5 +1,3 @@
-//go:build linux || darwin
-
 package libbox
 
 import (
diff --git a/experimental/libbox/service.go b/experimental/libbox/service.go
index 1bc24446..33c459ac 100644
--- a/experimental/libbox/service.go
+++ b/experimental/libbox/service.go
@@ -1,5 +1,3 @@
-//go:build linux || darwin
-
 package libbox
 
 import (
diff --git a/experimental/libbox/setup.go b/experimental/libbox/setup.go
index 08855fd0..c0466471 100644
--- a/experimental/libbox/setup.go
+++ b/experimental/libbox/setup.go
@@ -1,5 +1,3 @@
-//go:build linux || darwin
-
 package libbox
 
 import (
diff --git a/experimental/libbox/tun.go b/experimental/libbox/tun.go
index bf8450c9..e7db249c 100644
--- a/experimental/libbox/tun.go
+++ b/experimental/libbox/tun.go
@@ -1,5 +1,3 @@
-//go:build linux || darwin
-
 package libbox
 
 import (