Client

src/main/proto/echo.proto

@@ -4,6 +4,13 @@ package echo;
 option java_package = "fr.istic.grpc.echo";
 
 service EchoService {
-
+    rpc Echo(MessageSent) returns (MessageReceive) {}
 }
 
+message MessageSent{
+    string message = 1;
+}
+
+message MessageReceive{
+    string message = 1;
+}