executor: ExecutorService,
    url: String,
  ): CompletableFuture<Response> {
    val completableFuture = CompletableFuture<Response>()
    val buffer = Buffer()

    val req =
      engine.newUrlRequestBuilder(
        url,
        executor,
        object : Callback {
          override fun onRedirectReceived(
            request: UrlRequest,
            info: UrlResponseInfo,