}

	var err error
	listener, err := net.Listen("unix", path)
	if err != nil {
		return nil, fmt.Errorf("failed to listen on unix socket %q: %v", path, err)
	}

	// Update file permission so that cni plugin has permission to access it.
	if _, err := os.Stat(path); err != nil {
		return nil, fmt.Errorf("cni listener file %q doesn't exist", path)
	}

	if err != nil {
		return nil, fmt.Errorf("failed to listen unix: %w", err)
	}

	return &ztunnelServer{
		listener: l,
		conns: &connMgr{
			connectionSet: map[*ZtunnelConnection]struct{}{},
		},
		pods: pods,
	}, nil
}

func (z *ztunnelServer) Close() error {
	return z.listener.Close()
}

func (z *ztunnelServer) Run(ctx context.Context) {
	context.AfterFunc(ctx, func() { _ = z.Close() })

	if sockAddress == "" {
		return nil
	}
	log.Info("Start a UDS server for CNI plugin logs")
	unixListener, err := uds.NewListener(sockAddress)
	if err != nil {
		return fmt.Errorf("failed to create UDS listener: %v", err)
	}
	go func() {
		if err := l.loggingServer.Serve(unixListener); network.IsUnexpectedListenerError(err) {
			log.Errorf("Error running UDS log server: %v", err)
		}
	}()

	go func() {
		<-stop

---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  labels:
    app: metallb
  name: pod-lister
  namespace: metallb-system
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: pod-lister
subjects:
- kind: ServiceAccount
  name: speaker
  namespace: metallb-system
---
apiVersion: rbac.authorization.k8s.io/v1

	"istio.io/istio/pkg/network"
)

func SetupMonitoring(port int, path string, stop <-chan struct{}) {
	if port <= 0 {
		return
	}
	mux := http.NewServeMux()
	var listener net.Listener
	var err error
	if listener, err = net.Listen("tcp", fmt.Sprintf(":%d", port)); err != nil {
		log.Errorf("unable to listen on socket: %v", err)
		return
	}
	exporter, err := monitoring.RegisterPrometheusExporter(nil, nil)

// limitations under the License.

package configdump

import (
	admin "github.com/envoyproxy/go-control-plane/envoy/admin/v3"
)

// GetEndpointsConfigDump retrieves the listener config dump from the ConfigDump
func (w *Wrapper) GetEndpointsConfigDump() (*admin.EndpointsConfigDump, error) {
	endpointsDumpAny, err := w.getSection(endpoints)
	if err != nil {
		return nil, nil
	}

	if err != nil {
		return fmt.Errorf("failed to create CNI listener: %v", err)
	}
	go func() {
		err := s.cniListenServer.Serve(unixListener)

		select {
		case <-s.ctx.Done():
			// ctx done, we should silently go away
			return
		default:
			// If the cniListener exits, at least we should record an error log
			log.Errorf("CNI listener server exiting unexpectedly: %v", err)
		}
	}()

`IstioOperatorSpec` has pass-through fields to the Helm values.yaml API, but these are additionally validated through
a [schema](../operator/pkg/apis/istio/v1alpha1/values_types.proto).
1. [Controller](#k8s-controller) code. The code comprises the K8s listener, webhook and logic for reconciling the cluster
to an `IstioOperatorSpec` CR.
1. [Manifest creation](#manifest-creation) code. User settings are overlaid on top of the

          "targets": [
            {
              "datasource": {
                "type": "prometheus",
                "uid": "${datasource}"
              },
              "expr": "pilot_conflict_inbound_listener{app=\"istiod\"}",
              "format": "time_series",
              "hide": false,
              "intervalFactor": 1,
              "legendFormat": "Inbound Listeners",
              "refId": "B"

	filterChains []*filterChain
}

func getFilterConfig(filter *listener.Filter, out proto.Message) error {
	switch c := filter.ConfigType.(type) {
	case *listener.Filter_TypedConfig:
		if err := c.TypedConfig.UnmarshalTo(out); err != nil {
			return err
		}
	}
	return nil
}

func getHTTPConnectionManager(filter *listener.Filter) *hcm.HttpConnectionManager {
	cm := &hcm.HttpConnectionManager{}