opts = append(opts, grpc.WithTransportCredentials(insecure.NewCredentials()), grpc.WithContextDialer(func(ctx context.Context, addr string) (net.Conn, error) {
		var d net.Dialer
		return d.DialContext(ctx, "unix", socket)
	}))

	conn, err := grpc.Dial(socket, opts...)
	if err != nil {
		return nil, err
	}

	return conn, nil

	opts = append(opts, grpc.WithTransportCredentials(insecure.NewCredentials()), grpc.WithContextDialer(func(ctx context.Context, addr string) (net.Conn, error) {
		var d net.Dialer
		return d.DialContext(ctx, "unix", socket)
	}))

	conn, err := grpc.Dial(socket, opts...)
	if err != nil {
		return nil, err
	}

	return conn, nil

func NoOpNewStreamHandler(stream Stream, replySent <-chan struct{}) error { return nil }

// Dialer knows how to open a streaming connection to a server.
type Dialer interface {

	// Dial opens a streaming connection to a server using one of the protocols
	// specified (in order of most preferred to least preferred).
	Dial(protocols ...string) (Connection, string, error)
}

	return 0, syscall.EPLAN9
}

func (c *IPConn) writeMsg(b, oob []byte, addr *IPAddr) (n, oobn int, err error) {
	return 0, 0, syscall.EPLAN9
}

func (sd *sysDialer) dialIP(ctx context.Context, laddr, raddr *IPAddr) (*IPConn, error) {
	return nil, syscall.EPLAN9
}

func (sl *sysListener) listenIP(ctx context.Context, laddr *IPAddr) (*IPConn, error) {
	return nil, syscall.EPLAN9

	// ConnectStart is called before a Dial, excluding Dials made
	// during DNS lookups. In the case of DualStack (Happy Eyeballs)
	// dialing, this may be called multiple times, from multiple
	// goroutines.
	ConnectStart func(network, addr string)

	// ConnectDone is called after a Dial with the results, excluding
	// Dials made during DNS lookups. It may also be called multiple
	// times, like ConnectStart.

	// If external IPv4 connectivity exists, we can try dialing
	// non-node/interface local scope IPv4 addresses.
	// On Windows, Lookup APIs may not return IPv4-related
	// resource records when a node has no external IPv4
	// connectivity.
	testIPv4 = flag.Bool("ipv4", true, "assume external IPv4 connectivity exists")

	// If external IPv6 connectivity exists, we can try dialing
	// non-node/interface local scope IPv6 addresses.

		}
	}
}

type tcpLB struct {
	t         *testing.T
	ln        net.Listener
	serverURL string
	dials     int32
}

func (lb *tcpLB) handleConnection(in net.Conn, stopCh chan struct{}) {
	out, err := net.Dial("tcp", lb.serverURL)
	if err != nil {
		lb.t.Log(err)
		return
	}
	go io.Copy(out, in)
	go io.Copy(in, out)
	<-stopCh

	if testing.Short() {
		t.Skip("skipping syslog test during -short")
	}
	f, err := Dial("", "", (LOG_LOCAL7|LOG_DEBUG)+1, "syslog_test")
	if f != nil {
		t.Fatalf("Should have trapped bad priority")
	}
	f, err = Dial("", "", -1, "syslog_test")
	if f != nil {
		t.Fatalf("Should have trapped bad priority")
	}
	l, err := Dial("", "", LOG_USER|LOG_ERR, "syslog_test")
	if err != nil {

	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)
	w.WriteHeader(http.StatusOK)

	wg := sync.WaitGroup{}
	wg.Add(1)

	}

	select {
	case <-ctx.Done():
	case <-time.After(5 * time.Second):
		t.Fatal("expected context to be canceled")
	}

	oe, ok := err.(*OpError)
	if !ok || oe.Op != "dial" {
		t.Fatalf("Dial error = %#v; want dial *OpError", err)
	}

	if oe.Err != errCanceled {
		t.Errorf("DialContext = (%v, %v); want OpError with error %v", c, err, errCanceled)
	}