private final List<SmbTransportImpl> connections = new LinkedList<>();
    private final List<SmbTransportImpl> nonPooledConnections = new LinkedList<>();
    private final ConcurrentLinkedQueue<SmbTransportImpl> toRemove = new ConcurrentLinkedQueue<>();
    final Map<String, Integer> failCounts = new ConcurrentHashMap<>();


    @Override

     */
    public boolean isPossiblyDfs () throws SmbException {
        if ( this.connectionState.get() == 2 ) {
            // we are connected, so we know
            return isDfs();
        }
        try ( SmbTransportImpl transport = this.session.getTransport() ) {
            return transport.getNegotiateResponse().isDFSSupported();
        }
    }


    /**
     * @return the session this tree is connected in
     */

    synchronized void disconnect ( boolean inError ) {
        try ( SmbSessionImpl session = getSession() ) {
            if ( session == null ) {
                return;
            }
            try ( SmbTransportImpl transport = session.getTransport() ) {
                synchronized ( transport ) {
                    SmbTreeImpl t = getTreeInternal();
                    if ( t != null ) {
                        try {

            return null;
        SmbTransportImpl transport = getReferralTransport(tf, getDcReferrals(tf, domain));
        if ( transport == null && log.isDebugEnabled() ) {
            log.debug(String.format("Failed to connect to domain controller for %s", domain));
        }
        return transport;
    }

        try ( SmbTreeHandleImpl th = treeConn.connectHost(locator, locator.getServerWithDfs());
              SmbSessionImpl session = th.getSession();
              SmbTransportImpl transport = session.getTransport() ) {
            try {
                entries = doMsrpcShareEnum(tc, locator, transport.getRemoteAddress());
            }
            catch ( IOException ioe ) {