feat: support trusttunnel inbound and outbound

common/buf/sing.go

@@ -1,7 +1,6 @@
 package buf
 
 import (
-	"github.com/metacubex/sing/common"
 	"github.com/metacubex/sing/common/buf"
 )
 
@@ -9,14 +8,52 @@ const BufferSize = buf.BufferSize
 
 type Buffer = buf.Buffer
 
-var New = buf.New
-var NewPacket = buf.NewPacket
-var NewSize = buf.NewSize
-var With = buf.With
-var As = buf.As
-var ReleaseMulti = buf.ReleaseMulti
+func New() *Buffer {
+	return buf.New()
+}
 
-var (
-	Must  = common.Must
-	Error = common.Error
-)
+func NewPacket() *Buffer {
+	return buf.NewPacket()
+}
+
+func NewSize(size int) *Buffer {
+	return buf.NewSize(size)
+}
+
+func With(data []byte) *Buffer {
+	return buf.With(data)
+}
+
+func As(data []byte) *Buffer {
+	return buf.As(data)
+}
+
+func ReleaseMulti(buffers []*Buffer) {
+	buf.ReleaseMulti(buffers)
+}
+
+func Error(_ any, err error) error {
+	return err
+}
+
+func Must(errs ...error) {
+	for _, err := range errs {
+		if err != nil {
+			panic(err)
+		}
+	}
+}
+
+func Must1[T any](result T, err error) T {
+	if err != nil {
+		panic(err)
+	}
+	return result
+}
+
+func Must2[T any, T2 any](result T, result2 T2, err error) (T, T2) {
+	if err != nil {
+		panic(err)
+	}
+	return result, result2
+}