if (socketMode is TlsInstance) {
      assumeTrue((socketMode.provider == CONSCRYPT) == platform.isConscrypt())
    }

    val client =
      clientTestRule
        .newClientBuilder()
        .dns { listOf(InetAddress.getByName("localhost")) }
        .callTimeout(4, SECONDS)
        .writeTimeout(2, SECONDS)
        .readTimeout(2, SECONDS)
        .apply {
          if (socketMode is TlsInstance) {

   * error to execute a call more than once.
   */
  fun isExecuted(): Boolean

  fun isCanceled(): Boolean

  /**
   * Returns a timeout that spans the entire call: resolving DNS, connecting, writing the request
   * body, server processing, and reading the response body. If the call requires redirects or
   * retries all must complete within one timeout period.
   *

details can be found in the [DNS README](https://github.com/kubernetes/kubernetes/blob/release-1.2/cluster/saltbase/salt/kube-dns/README.md#a-records-and-hostname-based-on-pod-annotations---a-beta-feature-in-kubernetes-v12). Changes were introduced in PR [#20688](https://github.com/ku...

### SIG Network

For 1.13, the areas of focus were in IPv6, DNS improvements and some smaller items:
CoreDNS is now the default cluster DNS passing all of the scale/resource usage tests
Node-local DNS cache feature is available in Alpha. This feature deploys a lightweight DNS caching Daemonset that avoids the conntrack and converts queries from UDP to more reliable TCP.

      .assertLogMatch(Regex("""callEnd"""))
      .assertNoMoreLogs()
  }

  @Test
  fun dnsFail() {
    client =
      OkHttpClient
        .Builder()
        .dns { _ -> throw UnknownHostException("reason") }
        .eventListenerFactory(loggingEventListenerFactory)
        .build()
    try {
      client.newCall(request().build()).execute()
      fail<Any>()

### Other notable changes

* Update kube-dns to Version 1.14.10. Major changes: ([#62676](https://github.com/kubernetes/kubernetes/pull/62676), [@MrHohn](https://github.com/MrHohn))
    * - Fix a bug in DNS resolution for externalName services
    * and PTR records that need to query from upstream nameserver.

  private const val INITIAL_N = 0x80

  /**
   * Returns null if any label is oversized so much that the encoder cannot encode it without
   * integer overflow. This will not return null for labels that fit within the DNS size
   * limits.
   */
  fun encode(string: String): String? {
    var pos = 0
    val limit = string.length
    val result = Buffer()

    while (pos < limit) {

        .build()

    val dohDns = buildCloudflareIp(client)
    val dohEnabledClient =
      client
        .newBuilder()
        .eventListener(EventListener.NONE)
        .dns(dohDns)
        .build()

    dohEnabledClient.get("https://www.twitter.com/robots.txt")
    dohEnabledClient.get("https://www.facebook.com/robots.txt")
  }

  @Test
  fun testCustomTrustManager() {

* Make CoreDNS be the default DNS server in kube-up (instead of kube-dns formerly).  ([#67569](https://github.com/kubernetes/kubernetes/pull/67569), [@fturib](https://github.com/fturib))
    * It is still possible to deploy kube-dns by setting CLUSTER_DNS_CORE_DNS=false.

 * Fix: Use strict timeouts when aborting a download.
 * Fix: Support Shoutcast HTTP responses like `ICY 200 OK`.
 * Fix: Don't unzip if there isn't a response body.
 * Fix: Don't leak gzip streams on redirects.
 * Fix: Don't do DNS lookups on invalid hosts.
 * Fix: Exhaust the underlying stream when reading gzip streams.
 * Fix: Support the `PATCH` method.
 * Fix: Support request bodies on `DELETE` method.
 * Fix: Drop the `okhttp-protocols` module.