} else if parsedIP.To4() != nil {
			ipBind = "tcp4"
		}
	}
	ln, err := tls.Listen(ipBind, net.JoinHostPort(ip, strconv.Itoa(port)), cfg)
	if err != nil {
		return nil, 0, err
	}
	port = ln.Addr().(*net.TCPAddr).Port
	return ln, port, nil
}

func listenOnUDS(uds string) (net.Listener, error) {
	_ = os.Remove(uds)
	ln, err := net.Listen("unix", uds)
	if err != nil {
		return nil, err
	}

	return ln, nil
}

    upstream minio {
        server site1-minio1:9000;
        server site1-minio2:9000;
        server site1-minio3:9000;
        server site1-minio4:9000;
    }

    server {
        listen       9001;
        listen  [::]:9001;
        server_name  localhost;

        # To allow special characters in headers
        ignore_invalid_headers off;
        # Allow any size file to be uploaded.

    upstream minio {
        server site2-minio1:9000;
        server site2-minio2:9000;
        server site2-minio3:9000;
        server site2-minio4:9000;
    }

    server {
        listen       9002;
        listen  [::]:9002;
        server_name  localhost;

        # To allow special characters in headers
        ignore_invalid_headers off;
        # Allow any size file to be uploaded.

Sie Ihre **FastAPI**-Anwendungen mit dem bereitgestellten `TestClient` testen. Bisher haben Sie nur gesehen, wie man synchrone Tests schreibt, ohne `async`hrone Funktionen zu verwenden.

Die Möglichkeit, in Ihren Tests asynchrone Funktionen zu verwenden, könnte beispielsweise nützlich sein, wenn Sie Ihre Datenbank asynchron abfragen. Stellen Sie sich vor, Sie möchten das Senden von Requests an Ihre FastAPI-Anwendung testen und dann überprüfen, ob Ihr Backend die richtigen Daten erfolgreich in...

	}

	// Opening a Listener should fail at this point too.
	ln2, err := Listen("tcp", "localhost:0")
	if err == nil {
		ln2.Close()
	}
	if errors.Is(err, syscall.EADDRINUSE) {
		t.Logf("Listen returned expected error: %v", err)
	} else {
		t.Errorf("unexpected error from Listen: %v\nwant: %v", err, syscall.EADDRINUSE)
	}

	// It doesn't matter whether we listen on "0.0.0.0", "::", or ""; go
	// treats them all the same.
	nodeIPs := []net.IP{net.IPv4zero}

	if !nodePortAddresses.MatchAll() {
		ips, err := nodePortAddresses.GetNodeIPs(proxyutil.RealNetwork{})
		if err == nil {
			nodeIPs = ips
		} else {

	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)
	if err != nil {
		log.Errorf("could not set up prometheus exporter: %v", err)

	flags.Uint64Var(&opts.peerPort, "peer-port", 0,
		"etcd peer port to use during migration operations. If unset defaults to 2380 or 2381 depending on <data-dir>.")
	flags.StringVar(&opts.peerListenUrls, "listen-peer-urls", "",
		"etcd --listen-peer-urls flag. If unset, fallbacks to LISTEN_PEER_URLS env and if unset defaults to http://localhost:<peer-port>.")
	flags.StringVar(&opts.peerAdvertiseUrls, "initial-advertise-peer-urls", "",

)

// Options defines the set of options supported by Istio's ControlZ component introspection package.
type Options struct {
	// The IP port to use for ctrlz.
	Port uint16

	// The IP address to listen on for ctrlz.
	Address string

	// If true, pprof will be enabled
	EnablePprof bool
}

// DefaultOptions returns a new set of options, initialized to the defaults
func DefaultOptions() *Options {

		log.Warnf("Failed to create directory for %v: %v", path, err)
	}

	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 istio-proxy has permission to access it.
	if _, err := os.Stat(path); err != nil {