add needed files

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

stream.go

@@ -0,0 +1,40 @@
+package drpc
+
+import (
+	"context"
+
+	"github.com/unistack-org/micro/v3/server"
+	"google.golang.org/grpc"
+)
+
+// rpcStream implements a server side Stream.
+type rpcStream struct {
+	// embed the grpc stream so we can access it
+	grpc.ServerStream
+
+	request server.Request
+}
+
+func (r *rpcStream) Close() error {
+	return nil
+}
+
+func (r *rpcStream) Error() error {
+	return nil
+}
+
+func (r *rpcStream) Request() server.Request {
+	return r.request
+}
+
+func (r *rpcStream) Context() context.Context {
+	return r.ServerStream.Context()
+}
+
+func (r *rpcStream) Send(m interface{}) error {
+	return r.ServerStream.SendMsg(m)
+}
+
+func (r *rpcStream) Recv(m interface{}) error {
+	return r.ServerStream.RecvMsg(m)
+}