logger := klog.FromContext(ctx)
	logger.V(4).Info(log("calling NodePrepareResources rpc"), "request", req)

	conn, err := p.getOrCreateGRPCConn()
	if err != nil {
		return nil, err
	}

	ctx, cancel := context.WithTimeout(ctx, p.clientTimeout)
	defer cancel()

	nodeClient := drapb.NewNodeClient(conn)
	response, err := nodeClient.NodePrepareResources(ctx, req)

	Expect(r.reverseStatus).To(Equal(map[string]sets.String{"a": {"conB~": x}, "c": {"conC~": x}, "d": {"conD~": x, "conA~": x}}))
	r.RegisterDisconnect("conA", sets.New[xds.EventType](typ))
	Expect(r.status).To(Equal(map[string]string{"conB~": "a", "conC~": "c", "conD~": "d"}))
	Expect(r.reverseStatus).To(Equal(map[string]sets.String{"a": {"conB~": x}, "c": {"conC~": x}, "d": {"conD~": x}}))
}

}

// Accept - reads from httpListener.acceptCh for one of previously accepted TCP connection and returns the same.
func (listener *httpListener) Accept() (conn net.Conn, err error) {
	select {
	case result, ok := <-listener.acceptCh:
		if ok {
			return result.conn, result.err
		}
	case <-listener.ctx.Done():
	}
	return nil, syscall.EINVAL
}

// Close - closes underneath all TCP listeners.

func GetOriginalDestination(conn net.Conn) (daddr net.IP, dport uint16, err error) {
	// obtain os fd from Conn
	tcp, ok := conn.(*net.TCPConn)
	if !ok {
		err = errors.New("socket is not tcp")
		return
	}
	file, err := tcp.File()
	if err != nil {
		return
	}
	defer file.Close()
	fd := file.Fd()

	// Detect underlying ip is v4 or v6
	ip := conn.RemoteAddr().(*net.TCPAddr).IP
	isIpv4 := false

)

// A Client represents a client connection to an SMTP server.
type Client struct {
	// Text is the textproto.Conn used by the Client. It is exported to allow for
	// clients to add extensions.
	Text *textproto.Conn
	// keep a reference to the connection so it can be used to create a TLS
	// connection later
	conn net.Conn
	// whether the Client is using TLS
	tls        bool
	serverName string
	// map of supported extensions

						ResourceHandle: "dummy-resource",
					},
				},
			}
			client.NodePrepareResources(context.TODO(), req)

			client.(*plugin).Lock()
			conn := client.(*plugin).conn
			client.(*plugin).Unlock()

			m.Lock()
			defer m.Unlock()
			reusedConns[conn]++
		}()
	}

	wg.Wait()
	// We should have only one entry otherwise it means another gRPC connection has been created
	if len(reusedConns) != 1 {

     * {@link JarURLConnection#getJarFile()}の例外処理をラップするメソッドです。
     *
     * @param conn
     *            {@link JarURLConnection}。{@literal null}であってはいけません
     * @return {@link JarFile}
     */
    public static JarFile getJarFile(final JarURLConnection conn) {
        assertArgumentNotNull("conn", conn);

        try {
            return conn.getJarFile();
        } catch (final IOException e) {

}

func (conn *Connection) ID() string {
	return conn.conID
}

func (conn *Connection) Peer() string {
	return conn.peerAddr
}

func (conn *Connection) SetID(id string) {
	conn.conID = id
}

func (conn *Connection) ConnectedAt() time.Time {
	return conn.connectedAt
}

func (conn *Connection) Stop() {
	close(conn.stop)
}

func (conn *Connection) MarkInitialized() {

	}
}

func (conn *Connection) Initialize(node *core.Node) error {
	return conn.s.initConnection(node, conn, conn.ids)
}

func (conn *Connection) Close() {
	conn.s.closeConnection(conn)
}

func (conn *Connection) Watcher() xds.Watcher {
	return conn.proxy
}

func (conn *Connection) Process(req *discovery.DiscoveryRequest) error {
	return conn.s.processRequest(req, conn)
}

// The stop function closes all resources, including c1, c2, and the underlying
// net.Listener (if there is one), and should not be nil.
type MakePipe func() (c1, c2 net.Conn, stop func(), err error)

// TestConn tests that a net.Conn implementation properly satisfies the interface.
// The tests should not produce any false positives, but may experience
// false negatives. Thus, some issues may only be detected when the test is