credElement := strings.TrimPrefix(strings.Split(strings.TrimSpace(v4Auth), ",")[0], signV4Algorithm)
	// Replace all spaced strings, some clients can send spaced
	// parameters and some won't. So we pro-actively remove any spaces
	// to make parsing easier.
	v4Auth = strings.ReplaceAll(v4Auth, " ", "")
	if v4Auth == "" {
		return sv, ErrAuthHeaderEmpty
	}

	KMSVersions := []string{
		kmsAPIVersionPrefix,
	}

	gz, err := gzhttp.NewWrapper(gzhttp.MinSize(1000), gzhttp.CompressionLevel(gzip.BestSpeed))
	if err != nil {
		// Static params, so this is very unlikely.
		logger.Fatal(err, "Unable to initialize server")
	}

	for _, version := range KMSVersions {
		// KMS Status APIs

			}

			text, ok = matcher(text, string(s), hasLeadingPercent)
			if !ok {
				return false, nil
			}
			hasLeadingPercent = true
			s = []rune{}

			if i == patLen-1 {
				// Last pattern character is a %, so
				// we are done.
				return true, nil
			}

		case underscore:
			if len(s) == 0 {
				text, ok = dropRune(text)
				if !ok {
					return false, nil
				}
				continue
			}

func newKubeClientWithRevision(kubeconfig, configContext, revision string) (kube.CLIClient, error) {
	rc, err := kube.DefaultRestConfig(kubeconfig, configContext, func(config *rest.Config) {
		// We are running a one-off command locally, so we don't need to worry too much about rate limiting
		// Bumping this up greatly decreases install time
		config.QPS = 50
		config.Burst = 100
	})
	if err != nil {
		return nil, err
	}

				gvk := gvk.MustFromGVR(gvr).Kubernetes()
				objs, err := fc.Tracker().List(gvr, gvk, ns)
				// This can happen for PartialMetadata objects unfortunately.. so just continue
				if err == nil {
					l, err := meta.ExtractList(objs)
					if err != nil {
						return false, nil, err
					}
					for _, object := range l {
						watch.(addObject).Add(object)
					}

	return func() (*istioVersion.MeshInfo, error) {
		remInfo, err := getRemoteInfo(ctx, *opts)
		if err != nil {
			fmt.Fprintf((*pc).OutOrStderr(), "%v\n", err)
			// Return nil so that the client version is printed
			return nil, nil
		}
		if remInfo == nil {
			fmt.Fprintf((*pc).OutOrStderr(), "Istio is not present in the cluster with namespace %q\n", ctx.IstioNamespace())
		}
		return remInfo, err

			// Expect header is always of form:
			//
			//   Expect       =  "Expect" ":" 1#expectation
			//   expectation  =  "100-continue" | expectation-extension
			//
			// So it safe to assume that '100-continue' is what would
			// be sent, for the time being keep this work around.
			// Adding a *TODO* to remove this later when Golang server
			// doesn't filter out the 'Expect' header.

			fd := int(fdPtr)

			_ = unix.SetsockoptInt(fd, unix.SOL_SOCKET, unix.SO_REUSEADDR, 1)

			_ = unix.SetsockoptInt(fd, unix.SOL_SOCKET, unix.SO_REUSEPORT, 1)

			{
				// Enable big buffers
				_ = unix.SetsockoptInt(fd, unix.SOL_SOCKET, unix.SO_SNDBUF, opts.SendBufSize)

				_ = unix.SetsockoptInt(fd, unix.SOL_SOCKET, unix.SO_RCVBUF, opts.RecvBufSize)
			}

			// Enable TCP open

	ztunClient.Close()
	// this will retry for a bit, so shouldn't flake
	mt.Assert(ztunnelConnected.Name(), nil, monitortest.Exactly(0))
}

func podAndNetns() (*v1.Pod, *fakeNs) {
	devNull, err := os.Open(os.DevNull)
	if err != nil {
		panic(err)
	}
	// we can't close this now, because we need to pass it from the ztunnel server to the client
	// it would leak, but this is a test, so we don't care
	//	defer devNull.Close()

	maxSubscribers int32

	// not atomics:
	subs []*Sub[T]
	sync.RWMutex
}

// Publish message to the subscribers.
// Note that publish is always non-blocking send so that we don't block on slow receivers.
// Hence receivers should use buffered channel so as not to miss the published events.
func (ps *PubSub[T, M]) Publish(item T) {
	ps.RLock()
	defer ps.RUnlock()
	for _, sub := range ps.subs {