in go/cmd/server/server.go [27:36]
func startGrpc() error {
lis, err := net.Listen("tcp", ":50051")
if err != nil {
log.Fatalf("failed to listen: %v", err)
}
s := grpc.NewServer()
pb.RegisterLoggerServer(s, &server{})
reflection.Register(s)
return s.Serve(lis)
}