syntax = "proto3";

message EchoRequest { string message = 1; }

message EchoResponse { string messageReturn = 1; }

message ServerStreamingEchoRequest { string message = 1; }

message ServerStreamingEchoResponse { string messageReturn = 1; }

service EchoService {
  rpc Echo(EchoRequest) returns (EchoResponse);

  rpc ServerStreamingEcho(ServerStreamingEchoRequest)
      returns (stream ServerStreamingEchoResponse);
}