Add xhttp transport

common/xray/pipe/writer.go

@@ -0,0 +1,29 @@
+package pipe
+
+import (
+	"github.com/sagernet/sing-box/common/xray/buf"
+)
+
+// Writer is a buf.Writer that writes data into a pipe.
+type Writer struct {
+	pipe *pipe
+}
+
+// WriteMultiBuffer implements buf.Writer.
+func (w *Writer) WriteMultiBuffer(mb buf.MultiBuffer) error {
+	return w.pipe.WriteMultiBuffer(mb)
+}
+
+// Close implements io.Closer. After the pipe is closed, writing to the pipe will return io.ErrClosedPipe, while reading will return io.EOF.
+func (w *Writer) Close() error {
+	return w.pipe.Close()
+}
+
+func (w *Writer) Len() int32 {
+	return w.pipe.Len()
+}
+
+// Interrupt implements common.Interruptible.
+func (w *Writer) Interrupt() {
+	w.pipe.Interrupt()
+}