) {
  try {
    for (url in urls) {
      sendRequest(client, url)
    }
  } finally {
    client.dispatcher.executorService.shutdownNow()
    client.connectionPool.evictAll()
  }
}

private fun buildClient(vararg specs: ConnectionSpec): OkHttpClient {
  return OkHttpClient.Builder()
    .connectionSpecs(listOf(*specs))
    .build()
}

private fun sendRequest(
  client: OkHttpClient,
  url: String,
) {