server.useHttps(handshakeCertificates.sslSocketFactory())

    val dns =
      Dns {
        Dns.SYSTEM.lookup(server.hostName)
      }

    val client =
      clientTestRule
        .newClientBuilder()
        .sslSocketFactory(
          handshakeCertificates.sslSocketFactory(),
          handshakeCertificates.trustManager,
        ).dns(dns)
        .build()

    server.enqueue(MockResponse())

        .newBuilder()
        .dns {
          Dns.SYSTEM.lookup("sni.cloudflaressl.com")
        }.build()

    val request =
      Request
        .Builder()
        .url("https://cloudflare-dns.com/cdn-cgi/trace")
        .build()
    client.newCall(request).execute().use { response ->
      assertThat(response.code).isEqualTo(200)
      assertThat(response.protocol).isEqualTo(Protocol.HTTP_2)

   */
  open fun proxySelectEnd(
    call: Call,
    url: HttpUrl,
    proxies: List<@JvmSuppressWildcards Proxy>,
  ) {
  }

  /**
   * Invoked just prior to a DNS lookup. See [Dns.lookup].
   *
   * This can be invoked more than 1 time for a single [Call]. For example, if the response to the
   * [Call.request] is a redirect to a different host.
   *

 *
 *  * A DNS lookup failed
 *  * The configuration is incapable of carrying the request, such as when the client is configured
 *    to use `H2_PRIOR_KNOWLEDGE` but the URL's scheme is `https:`.
 *  * Preemptive proxy authentication failed.
 *
 * Planning failures are not necessarily fatal. For example, even if we can't DNS lookup the first

 * configure the factory when sample values impact the correctness of the test.
 */
class TestValueFactory : Closeable {
  var taskFaker: TaskFaker = TaskFaker()
  var taskRunner: TaskRunner = taskFaker.taskRunner
  var dns: Dns = Dns.SYSTEM
  var proxy: Proxy = Proxy.NO_PROXY
  var proxySelector: ProxySelector = RecordingProxySelector()
  var proxyAuthenticator: Authenticator = RecordingOkAuthenticator("password", null)

	public final fun setMaxRequestsPerHost (I)V
}

public abstract interface class okhttp3/Dns {
	public static final field Companion Lokhttp3/Dns$Companion;
	public static final field SYSTEM Lokhttp3/Dns;
	public abstract fun lookup (Ljava/lang/String;)Ljava/util/List;
}

public final class okhttp3/Dns$Companion {
}

public abstract class okhttp3/EventListener {

public final class okhttp3/dnsoverhttps/DnsOverHttps : okhttp3/Dns {
	public static final field Companion Lokhttp3/dnsoverhttps/DnsOverHttps$Companion;
	public static final field MAX_RESPONSE_SIZE I
	public final fun client ()Lokhttp3/OkHttpClient;
	public final fun includeIPv6 ()Z
	public fun lookup (Ljava/lang/String;)Ljava/util/List;
	public final fun post ()Z
	public final fun resolvePrivateAddresses ()Z
	public final fun resolvePublicAddresses ()Z

private fun runBatch(
  dnsProviders: List<DnsOverHttps>,
  names: List<String>,
) {
  var time = System.currentTimeMillis()
  for (dns in dnsProviders) {
    println("Testing ${dns.url}")
    for (host in names) {
      print("$host: ")
      System.out.flush()
      try {
        val results = dns.lookup(host)
        println(results)
      } catch (uhe: UnknownHostException) {
        var e: Throwable? = uhe

import java.net.Inet6Address
import java.net.InetAddress
import okhttp3.internal.interleave

/**
 * Implementation of HappyEyeballs Sorting Addresses.
 *
 * The current implementation does not address any of:
 *  - Async DNS split by IP class
 *  - Stateful handling of connectivity results
 *  - The prioritisation of addresses
 *
 * https://datatracker.ietf.org/doc/html/rfc8305#section-4
 */

 *     a race in fast follow-up.
 *
 *  4. If there's no existing connection, make a list of routes (which may require blocking DNS
 *     lookups) and attempt new connections to them. When failures occur, retries iterate the
 *     list of available routes.
 *
 * If the pool gains an eligible connection while DNS, TCP, or TLS work is in flight, this finder
 * will prefer pooled connections. Only pooled HTTP/2 connections are used for such de-duplication.