samples/grpc_middleware_service/proto/samples/greeter.proto

syntax = "proto3";
 
package samples.api;
 
service GreeterService {
  rpc SayHello(GreetingRequest) returns(GreetingResponse) {}
}
 
message GreetingRequest {
  string name = 1;
}
 
message GreetingResponse {
  string greeting = 1;
}