in src/currencyservice/src/server.cpp [239:254]
void RunServer(uint16_t port)
{
std::string address("0.0.0.0:" + std::to_string(port));
CurrencyService currencyService;
HealthServer healthService;
ServerBuilder builder;
builder.RegisterService(¤cyService);
builder.RegisterService(&healthService);
builder.AddListeningPort(address, grpc::InsecureServerCredentials());
std::unique_ptr<Server> server(builder.BuildAndStart());
logger->Info("Currency Server listening on port: " + address);
server->Wait();
server->Shutdown();
}