Add fabric binary transport loop

agents/rap-node-agent/internal/fabricproto/frame.go

@@ -79,14 +79,13 @@ func WriteFrame(w io.Writer, frame Frame) error {
 	}
 	header := make([]byte, HeaderSize)
 	writeHeader(header, frame, uint32(len(frame.Payload)))
-	if _, err := w.Write(header); err != nil {
+	if err := writeFull(w, header); err != nil {
 		return err
 	}
 	if len(frame.Payload) == 0 {
 		return nil
 	}
-	_, err := w.Write(frame.Payload)
-	return err
+	return writeFull(w, frame.Payload)
 }
 
 func ReadFrame(r io.Reader, maxPayload int) (Frame, error) {
@@ -201,3 +200,17 @@ func parseHeader(header []byte, maxPayload int) (Frame, int, error) {
 	}
 	return frame, payloadLength, nil
 }
+
+func writeFull(w io.Writer, data []byte) error {
+	for len(data) > 0 {
+		n, err := w.Write(data)
+		if err != nil {
+			return err
+		}
+		if n <= 0 {
+			return io.ErrShortWrite
+		}
+		data = data[n:]
+	}
+	return nil
+}