f := filepath.Join(t.TempDir(), "test")
	l, err := NewListener(f)
	if err != nil {
		t.Fatalf("unexpected error %v", err)
	}
	defer l.Close()
	conn, err := connect(f)
	if err != nil {
		t.Fatalf("failed to connect %v", err)
	}
	conn.Close()
}

func connect(socket string) (*grpc.ClientConn, error) {
	var opts []grpc.DialOption

func (p *podNetnsCache) UpsertPodCacheWithNetns(uid string, workload WorkloadInfo) Netns {
	// lock current snapshot pod map
	p.mu.Lock()
	defer p.mu.Unlock()
	if existing := p.currentPodCache[uid]; existing.Netns != nil {
		if existing.Netns.Inode() == workload.Netns.Inode() {
			workload.Netns.Close()
			// Replace the workload, but keep the old Netns

	udsSock := filepath.Join(udsSockDir, "cni.sock")
	logger := NewUDSLogger()
	pluginLog.SetOutputLevel(log.DebugLevel) // this will be configured by global.logging.level
	stop := make(chan struct{})
	defer close(stop)
	assert.NoError(t, logger.StartUDSLogServer(udsSock, stop))

	// Configure log to tee to UDS server
	stdout := os.Stdout
	r, w, _ := os.Pipe()
	os.Stdout = w
	loggingOptions := log.DefaultOptions()

		panic("expected snapshot sent")
	}
	sendAck(ztunClient)

	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

)

type NetnsWrapper struct {
	innerNetns netns.NetNS
	inode      uint64
}

func (n *NetnsWrapper) Inode() uint64 {
	return n.inode
}

func (n *NetnsWrapper) Close() error {
	return n.innerNetns.Close()
}

func (n *NetnsWrapper) Fd() uintptr {
	return n.innerNetns.Fd()
}

func inodeForFd(n NetnsFd) (uint64, error) {
	stats := &unix.Stat_t{}
	err := unix.Fstat(int(n.Fd()), stats)

	}
	req, err := http.NewRequest(http.MethodPut, c.baseURL.String()+"/"+scope.Name, &jsonScopeInfo)
	if err != nil {
		return err
	}
	defer req.Body.Close()

	resp, err := c.httpClient.Do(req)
	if err != nil {
		return err
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusAccepted {
		return fmt.Errorf("cannot update resource %s, got status %s", scope.Name, resp.Status)
	}
	return nil
}

	file := os.Stdin
	if filename != "-" {
		var err error
		file, err = os.Open(filename)
		if err != nil {
			return nil, err
		}
	}
	defer func() {
		if err := file.Close(); err != nil {
			log.Errorf("failed to close %s: %s", filename, err)
		}
	}()
	data, err := io.ReadAll(file)
	if err != nil {
		return nil, err
	}
	return data, nil
}

			} else {
				var in *os.File
				if in, err = os.Open(inFilename); err != nil {
					return err
				}
				reader = in
				defer func() {
					if errClose := in.Close(); errClose != nil {
						log.Errorf("Error: close file from %s, %s", inFilename, errClose)

						// don't overwrite the previous error
						if err == nil {
							err = errClose
						}
					}
				}()
			}

	if err := cfg.FillConfigFromEnvironment(); err != nil {
		return err
	}

	netNs, err := getNs(netns)
	if err != nil {
		err = fmt.Errorf("failed to open netns %q: %s", netns, err)
		return err
	}
	defer netNs.Close()

	return netNs.Do(func(_ ns.NetNS) error {
		log.Infof("============= Start iptables configuration for %v =============", podName)
		defer log.Infof("============= End iptables configuration for %v =============", podName)

		UID:       types.UID("863b91d4-4b68-4efa-917f-4b560e3e86aa"),
	}}
	podUIDNetns, err := n.FindNetnsForPods(map[types.UID]*corev1.Pod{
		pod.UID: pod,
	})
	if err != nil {
		panic(err)
	}
	defer podUIDNetns.Close()

	if len(podUIDNetns) == 0 {
		t.Fatal("expected to find pod netns")
	}

	expectedUID := "863b91d4-4b68-4efa-917f-4b560e3e86aa"
	if podUIDNetns[expectedUID] == (WorkloadInfo{}) {