// still alive. As ztunnel shouldn't send anything unless we send
			// something first, we expect to get an os.ErrDeadlineExceeded error
			// here if the connection is still alive.
			// note that unlike tcp connections, reading is a good enough test here.
			_, err := conn.readMessage(time.Second / 100)
			switch {
			case !errors.Is(err, os.ErrDeadlineExceeded):
				log.Debugf("ztunnel keepalive failed: %v", err)

	configDump, err := io.ReadAll(configDumpFile)
	if err != nil {
		t.Errorf("error reading test data file: %v", err)
	}

	outFile, err := os.Open("testdata/secret/output")
	if err != nil {
		t.Errorf("error opening test data output file: %v", err)
	}
	defer outFile.Close()
	expectedOut, err := io.ReadAll(outFile)
	if err != nil {
		t.Errorf("error reading test data output file: %v", err)
	}

	gotOut := &bytes.Buffer{}

	if !ok {
		err = fmt.Errorf("error reading plugin list from CNI config")
		return
	}
	return
}

// Given the raw plugin interface, return the plugin asserted as a map[string]interface{}
func GetPlugin(rawPlugin any) (plugin map[string]any, err error) {
	plugin, ok := rawPlugin.(map[string]any)
	if !ok {
		err = fmt.Errorf("error reading plugin from CNI config plugin list")
		return
	}
	return

	viper.SetConfigName(configName)
	viper.SetConfigType(configType)
	viper.AddConfigPath(configPath)
	viper.SetEnvKeyReplacer(strings.NewReplacer("-", "_"))
	err := viper.ReadInConfig()
	// Ignore errors reading the configuration unless the file is explicitly customized
	if root.IstioConfig != defaultIstioctlConfig {
		return err
	}

	return nil
}

func init() {

the policy propagation from Istiod to Envoy and the final AuthorizationPolicy list merged
from multiple sources (mesh-level, namespace-level and workload-level).

The command also supports reading from a standalone config dump file with flag -f.`,
		Example: `  # Check AuthorizationPolicy applied to pod httpbin-88ddbcfdd-nt5jb:
  istioctl x authz check httpbin-88ddbcfdd-nt5jb

	for _, f := range args {
		var r *os.File

		// Handle "-" as stdin as a special case.
		if f == "-" {
			if isatty.IsTerminal(os.Stdin.Fd()) && !isJSONorYAMLOutputFormat() {
				fmt.Fprint(cmd.OutOrStdout(), "Reading from stdin:\n")
			}
			r = os.Stdin
			readers = append(readers, local.ReaderSource{Name: f, Reader: r})
			continue
		}

		fi, err := os.Stat(f)
		if err != nil {
			return nil, err
		}