syntax = "proto3";
package pingpong;
option go_package = "github.com/occlum/demos/grpc_pingpong/pingpong";

message PingPongMesg {
  string ping = 1;
  string pong = 2;
  string timestamp = 3;
}

service PingPongService {
  rpc PingPong(PingPongMesg) returns (PingPongMesg) {}
}