add needed files

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

response.go

@@ -0,0 +1,45 @@
+package drpc
+
+import (
+	"io"
+
+	"github.com/unistack-org/micro/v3/codec"
+	"github.com/unistack-org/micro/v3/metadata"
+)
+
+type response struct {
+	//conn   *poolConn
+	stream io.ReadWriteCloser
+	codec  codec.Codec
+}
+
+// Read the response
+func (r *response) Codec() codec.Codec {
+	return r.codec
+}
+
+// read the header
+func (r *response) Header() metadata.Metadata {
+	return nil
+	/*
+		meta, err := r.stream.Header()
+		if err != nil {
+			return metadata.New(0)
+		}
+		md := metadata.New(len(meta))
+		for k, v := range meta {
+			md.Set(k, strings.Join(v, ","))
+		}
+		return md
+	*/
+}
+
+// Read the undecoded response
+func (r *response) Read() ([]byte, error) {
+	f := &codec.Frame{}
+	//if err := r.codec.ReadBody(&wrapStream{r.stream}, f); err != nil {
+	if err := r.codec.ReadBody(r.stream, f); err != nil {
+		return nil, err
+	}
+	return f.Data, nil
+}