match config {
          SpawnConfig::Https(_) => "https",
          _ => "http",
        }
      );
    }

    Ok(tokio::spawn(async move {
      match config {
        SpawnConfig::Https(acceptor) => {
          axum_server::Server::bind(addr)
            .handle(handle)
            .acceptor(acceptor)
            .serve(router.into_make_service())
            .await
        }
        SpawnConfig::Redirect(destination) => {
          axum_server::Server::bind(addr)
            .handle(handle)
            .serve(
              Router::new()
                .fallback(Self::redirect_http_to_https)
                .layer(Extension(destination))
                .into_make_service(),
            )
            .await
        }
        SpawnConfig::Http => {
          axum_server::Server::bind(addr)
            .handle(handle)
            .serve(router.into_make_service())
            .await
        }
      }
    }))
  }

  fn acme_cache(acme_cache: Option<&PathBuf>, options: &Options) -> Result<PathBuf> {