options,
      )?)))
      .directory(if cfg!(test) {
        LETS_ENCRYPT_STAGING_DIRECTORY
      } else {
        LETS_ENCRYPT_PRODUCTION_DIRECTORY
      });

    let mut state = config.state();

    let acceptor = state.axum_acceptor(Arc::new(
      rustls::ServerConfig::builder()
        .with_safe_defaults()
        .with_no_client_auth()
        .with_cert_resolver(state.resolver()),
    ));

    tokio::spawn(async move {
      while let Some(result) = state.next().await {
        match result {
          Ok(ok) => log::info!("ACME event: {:?}", ok),
          Err(err) => log::error!("ACME error: {:?}", err),
        }
      }
    });

    Ok(acceptor)
  }

  fn index_height(index: &Index) -> ServerResult<Height> {
    index.block_height()?.ok_or_not_found(|| "genesis block")
  }

  async fn clock(Extension(index): Extension<Arc<Index>>) -> ServerResult<Response> {
    Ok(
      (
        [(
          header::CONTENT_SECURITY_POLICY,
          HeaderValue::from_static("default-src 'unsafe-inline'"),