*  Fix: Permit hostnames with underscores.
 *  Fix: Permit overriding the content-type in `OkApacheClient`.
 *  Fix: Use the socket factory for direct connections.
 *  Fix: Honor `OkUrlFactory` APIs that disable redirects.
 *  Fix: Don't crash on concurrent modification of `SPDY` SPDY settings.

## Version 2.0.0

This release commits to a stable 2.0 API. Read the 2.0.0-RC1 changes for advice

instances will stomp on each other, corrupt the response cache, and possibly crash your program.

Response caching uses HTTP headers for all configuration. You can add request headers like `Cache-Control: max-stale=3600` and OkHttp's cache will honor them. Your webserver configures how long responses are cached with its own response headers, like `Cache-Control: max-age=9600`. There are cache headers to force a cached response, force a network response, or force the network response to be validated...

* Do not throw creation errors for containers that fail immediately after being started ([#23894](https://github.com/kubernetes/kubernetes/pull/23894), [@vishh](https://github.com/vishh))
* Honor starting resourceVersion in watch cache ([#24208](https://github.com/kubernetes/kubernetes/pull/24208), [@ncdc](https://github.com/ncdc))

- Fixes a regression in the pod binding subresource to honor the `metadata.uid` precondition.

* Build Kubernetes, etcd and flannel for arm64 and ppc64le ([#23931](https://github.com/kubernetes/kubernetes/pull/23931), [@luxas](https://github.com/luxas))
* Honor starting resourceVersion in watch cache ([#24208](https://github.com/kubernetes/kubernetes/pull/24208), [@ncdc](https://github.com/ncdc))

		if legacyPreserved {
			if contextCanceled(ctx) {
				return res, ctx.Err()
			}

			if len(legacyEntries) > 0 {
				// legacy data dir means its old content, honor system umask.
				if err = mkdirAll(legacyDataPath, 0o777, dstVolumeDir); err != nil {
					// any failed mkdir-calls delete them.
					s.deleteFile(dstVolumeDir, legacyDataPath, true, false)

    val request = server.takeRequest()
    assertThat(request.body?.utf8()).isEqualTo("ABC")
  }

  @Test
  fun connectionCloseInRequest() {
    server.enqueue(MockResponse()) // Server doesn't honor the connection: close header!
    server.enqueue(MockResponse())
    val a =
      getResponse(
        Request
          .Builder()
          .url(server.url("/"))

	// The reason to duplicate this structure here is to verify if the
	// unmarshalling works from a client perspective, specifically
	// while unmarshalling time.Time type for 'Initiated' field.
	// time.Time does not honor xml marshaller, it means that we need
	// to encode/format it before giving it to xml marshaling.

	// This below check adds client side verification to see if its
	// truly parsable.

- kubeadm: UnifiedControlPlaneImage is replaced by UseHyperKubeImage boolean value. ([#70793](https://github.com/kubernetes/kubernetes/pull/70793), [@rosti](https://github.com/rosti))
- For kube-up and derived configurations, CoreDNS will honor master taints, for consistency with kube-dns behavior. ([#70868](https://github.com/kubernetes/kubernetes/pull/70868), [@justinsb](https://github.com/justinsb))

- The AWS credential provider can now obtain ECR credentials even without the AWS cloud provider or being on an EC2 instance. Additionally, AWS credential provider caching has been improved to honor the ECR credential timeout. ([#75587](https://github.com/kubernetes/kubernetes/pull/75587), [@tiffanyfay](https://github.com/tiffanyfay))


### Azure