*  New: Support [HTTP 101] responses with `Response.socket`. This mechanism is only supported on
    HTTP/1.1. We also reimplemented our websocket client to use this new mechanism.

 *  New: The `okhttp-zstd` module negotiates [Zstandard (zstd)][zstd] compression with servers that
    support it. It integrates a new (unstable) [ZSTD-KMP] library, also from Square. Enable it like
    this:

    ```kotlin
    val client = OkHttpClient.Builder()

    // contain non-decimal characters.
    int length = end - start;
    if (length <= 0 || length > 3) {
      throw new NumberFormatException();
    }
    // Disallow leading zeroes, because no clear standard exists on
    // whether these should be interpreted as decimal or octal.
    if (length > 1 && ipString.charAt(start) == '0') {
      throw new NumberFormatException();
    }
    int octet = 0;

		// AWS S3 silently drops checksums on range requests.
		cs, _ := objInfo.decryptChecksums(opts.PartNumber, r.Header)
		hash.AddChecksumHeader(w, cs)
	}

	// Set standard object headers.
	if err = setObjectHeaders(ctx, w, objInfo, rs, opts); err != nil {
		writeErrorResponseHeadersOnly(w, toAPIError(ctx, err))
		return
	}

	// Set Parts Count Header

- Added the same information to an init container as a standard container in a pod when using `PodPresets`. ([#71479](https://github.com/kubernetes/kubernetes/pull/71479), [@soggiest](https://github.com/soggiest))

   * ...
   * ImmutableMap<Color, String> colorNames =
   *     allColors.stream().collect(toImmutableMap(c -> c, c -> c.toString()));
   * }
   *
   * <p>Streams provide a more standard and flexible API and the lambdas make it clear what the keys
   * and values in the map are.
   *
   * @throws NullPointerException if any element of {@code keys} is {@code null}, or if {@code

   * ...
   * ImmutableMap<Color, String> colorNames =
   *     allColors.stream().collect(toImmutableMap(c -> c, c -> c.toString()));
   * }
   *
   * <p>Streams provide a more standard and flexible API and the lambdas make it clear what the keys
   * and values in the map are.
   *
   * @throws NullPointerException if any element of {@code keys} is {@code null}, or if {@code

//   In C++ bool is a keyword while in C99 bool is a macro defined
//   in stdbool.h. It is possible for the two to be inconsistent.
//   For example, neither the C99 nor the C++11 standard force a byte
//   size on the bool type, so the macro defined in stdbool.h could
//   be inconsistent with the bool keyword in C++. Thus, the use
//   of stdbool.h is avoided and unsigned char is used instead.

func getAPIError(code APIErrorCode) APIError {
	if apiErr, ok := errorCodes[code]; ok {
		return apiErr
	}
	return errorCodes.ToAPIErr(ErrInternalError)
}

// getAPIErrorResponse gets in standard error and resource value and
// provides a encodable populated response values
func getAPIErrorResponse(ctx context.Context, err APIError, resource, requestID, hostID string) APIErrorResponse {

### CSI Volume Snapshot graduates to General Availability

CSI Volume Snapshot moves to GA in the 1.20 release. This feature provides a standard way to trigger volume snapshot operations in Kubernetes and allows Kubernetes users to incorporate snapshot operations in a portable manner on any Kubernetes environment regardless of supporting underlying storage providers.

* client-go: alpha support for out-of-tree exec-based credential providers. For example, a cloud provider could create their own authentication system rather than using the standard authentication provided with Kubernetes. ([#59495](https://github.com/kubernetes/kubernetes/pull/59495), [@ericchiang](https://github.com/ericchiang))