fun redirectWithProxySelector() {
    val proxySelectionRequests: MutableList<URI> = ArrayList()
    client =
      client.newBuilder()
        .proxySelector(
          object : ProxySelector() {
            override fun select(uri: URI): List<Proxy> {
              proxySelectionRequests.add(uri)
              val proxyServer = if (uri.port == server.port) server else server2