}

	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

		// Handle request using passed handler.
		handler.ServeHTTP(w, r)
	})

	srv.listenerMutex.Lock()
	srv.Handler = wrappedHandler
	srv.listener = listener
	srv.listenerMutex.Unlock()

	var l net.Listener = listener
	if tlsConfig != nil {
		l = tls.NewListener(listener, tlsConfig)
	}

	serve = func() error {
		return srv.Server.Serve(l)
	}

	return
}

	"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)
		}
	}()

		}
	case <-listener.ctx.Done():
	}
	return nil, syscall.EINVAL
}

// Close - closes underneath all TCP listeners.
func (listener *httpListener) Close() (err error) {
	listener.ctxCanceler()

	for i := range listener.tcpListeners {
		listener.tcpListeners[i].Close()
	}

	return nil
}

		return false
	}
	return true
}

func getFilterChains(l *listener.Listener) []*listener.FilterChain {
	res := l.FilterChains
	if l.DefaultFilterChain != nil {
		res = append(res, l.DefaultFilterChain)
	}
	return res
}

// retrieveListenerType classifies a Listener as HTTP|TCP|HTTP+TCP|UNKNOWN
func retrieveListenerType(l *listener.Listener) string {
	nHTTP := 0
	nTCP := 0

	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{}