// Send headers back immediately so we can start getting the body
	w.(http.Flusher).Flush()
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()

	dst, err := (&net.Dialer{}).DialContext(ctx, "tcp", r.Host)
	if err != nil {
		w.WriteHeader(http.StatusServiceUnavailable)
		log.Errorf("failed to dial upstream: %v", err)
		return true
	}
	log.Infof("Connected to %v", r.Host)

	if lookupHost == nil {
		lookupHost = net.DefaultResolver.LookupHost
	}

	if baseDialCtx == nil {
		// This is same as which `http.DefaultTransport` uses.
		baseDialCtx = (&net.Dialer{
			Timeout:   30 * time.Second,
			KeepAlive: 30 * time.Second,
		}).DialContext
	}

	return func(ctx context.Context, network, addr string) (conn net.Conn, err error) {
		host, port, err := net.SplitHostPort(addr)

	// If net.Dialer.DualStack (IPv6 "Happy Eyeballs") support is
	// enabled, this may be called multiple times.
	ConnectStart func(network, addr string)

	// ConnectDone is called when a new connection's Dial
	// completes. The provided err indicates whether the
	// connection completed successfully.
	// If net.Dialer.DualStack ("Happy Eyeballs") support is

		}
	}
}

var dialGoogleTests = []struct {
	dial               func(string, string) (Conn, error)
	unreachableNetwork string
	networks           []string
	addrs              []string
}{
	{
		dial:     (&Dialer{DualStack: true}).Dial,
		networks: []string{"tcp", "tcp4", "tcp6"},
		addrs:    []string{"www.google.com:http"},
	},
	{
		dial:               Dial,
		unreachableNetwork: "tcp6",

		grpc.WithTransportCredentials(insecure.NewCredentials()),
		grpc.WithBlock(),
		grpc.WithContextDialer(func(ctx context.Context, addr string) (net.Conn, error) {
			return (&net.Dialer{}).DialContext(ctx, "unix", addr)
		}),
	)

	if err != nil {
		return nil, nil, fmt.Errorf("failed to dial socket %s, err: %v", unixSocketPath, err)
	}

	return registerapi.NewRegistrationClient(c), c, nil

		grpc.WithAuthority("localhost"),
		grpc.WithTransportCredentials(insecure.NewCredentials()),
		grpc.WithBlock(),
		grpc.WithContextDialer(func(ctx context.Context, addr string) (net.Conn, error) {
			return (&net.Dialer{}).DialContext(ctx, "unix", addr)
		}),
	)

	if err != nil {
		return nil, nil, fmt.Errorf(errFailedToDialDevicePlugin+" %v", err)
	}

	return api.NewDevicePluginClient(c), c, nil

	doParseGo = flag.Bool("parsego", true, "stress parsing Go (generates garbage)")
)

func Println(a ...interface{}) {
	if *v {
		log.Println(a...)
	}
}

func dialStress(a net.Addr) {
	for {
		d := net.Dialer{Timeout: time.Duration(rand.Intn(1e9))}
		c, err := d.Dial("tcp", a.String())
		if err == nil {
			Println("did dial")
			go func() {
				time.Sleep(time.Duration(rand.Intn(500)) * time.Millisecond)
				c.Close()

	if len(errs) > 0 {
		return fmt.Errorf("failed to validate tracing configuration: %v", errs.ToAggregate())
	}

	opts := []otlptracegrpc.Option{}
	if es != nil {
		// Only use the egressselector dialer if egressselector is enabled.
		// Endpoint is on the "ControlPlane" network
		egressDialer, err := es.Lookup(egressselector.ControlPlane.AsNetworkContext())
		if err != nil {
			return err
		}

	conn, err := grpc.Dial(
		p.endpoint,
		grpc.WithTransportCredentials(insecure.NewCredentials()),
		grpc.WithContextDialer(func(ctx context.Context, target string) (net.Conn, error) {
			return (&net.Dialer{}).DialContext(ctx, network, target)
		}),
	)
	if err != nil {
		return nil, err
	}

	ctx, cancel := context.WithTimeout(context.Background(), time.Second)
	defer cancel()

	//   datagram connection, known as a datagram listener
	//
	// - An endpoint holder that opens an active stream or a
	//   destination-specific datagram connection, known as a
	//   dialer
	//
	// - An endpoint holder that opens the other connection, such
	//   as talking to the protocol stack inside the kernel
	//
	// For stream and datagram listeners, they will only require