if ( th.hasCapability(SmbConstants.CAP_LARGE_READX) ) {
            this.largeReadX = true;
            this.readSizeFile = Math.min(th.getConfig().getReceiveBufferSize() - 70, th.areSignaturesActive() ? 0xFFFF - 70 : 0xFFFFFF - 70);
            log.debug("Enabling LARGE_READX with " + this.readSizeFile);
        }
        else {

        super(config, SMB2_LOGOFF);
    }


    @Override
    protected Smb2LogoffResponse createResponse ( CIFSContext tc, ServerMessageBlock2Request<Smb2LogoffResponse> req ) {
        return new Smb2LogoffResponse(tc.getConfig());
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.CommonServerMessageBlockRequest#size()
     */
    @Override
    public int size () {

        super(config, SMB2_ECHO);
    }


    @Override
    protected Smb2EchoResponse createResponse ( CIFSContext tc, ServerMessageBlock2Request<Smb2EchoResponse> req ) {
        return new Smb2EchoResponse(tc.getConfig());
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.CommonServerMessageBlockRequest#size()
     */
    @Override
    public int size () {

    public SmbTransportPool getTransportPool () {
        return this.transportPool;
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.CIFSContext#getConfig()
     */
    @Override
    public Configuration getConfig () {
        return this.config;
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.CIFSContext#getDfs()
     */
    @Override

    private byte[] targetInformation;

    private static final Map<String, byte[]> TARGET_INFO_CACHE = new HashMap<>();


    private static byte[] getDefaultTargetInfo ( CIFSContext tc ) {
        String domain = tc.getConfig().getDefaultDomain();
        byte[] ti = TARGET_INFO_CACHE.get(domain);
        if ( ti != null ) {
            return ti;
        }

        ti = makeTargetInfo(tc, domain);

        this.fileId = fileId;
    }


    @Override
    protected Smb2FlushResponse createResponse ( CIFSContext tc, ServerMessageBlock2Request<Smb2FlushResponse> req ) {
        return new Smb2FlushResponse(tc.getConfig());
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.smb2.RequestWithFileId#setFileId(byte[])
     */
    @Override
    public void setFileId ( byte[] fileId ) {

    }


    @Override
    protected Smb2TreeConnectResponse createResponse ( CIFSContext tc, ServerMessageBlock2Request<Smb2TreeConnectResponse> req ) {
        return new Smb2TreeConnectResponse(tc.getConfig());
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.smb2.ServerMessageBlock2#chain(jcifs.internal.smb2.ServerMessageBlock2)
     */
    @Override

     * @param path
     * @param service
     * @param andx
     */
    public SmbComTreeConnectAndX ( CIFSContext ctx, ServerData server, String path, String service, ServerMessageBlock andx ) {
        super(ctx.getConfig(), SMB_COM_TREE_CONNECT_ANDX, andx);
        this.ctx = ctx;
        this.server = server;
        this.path = path;
        this.service = service;
    }


    @Override

        }
    }


    @Test
    public void logonGuestAlternative () throws IOException {

        CIFSContext ctx = getContext();
        ctx = withConfig(ctx, new DelegatingConfiguration(ctx.getConfig()) {

            @Override
            public String getGuestUsername () {
                return "jcifs-guest";
            }
        }).withGuestCrendentials();

     */
    @Override
    protected Smb2LockResponse createResponse ( CIFSContext tc, ServerMessageBlock2Request<Smb2LockResponse> req ) {
        return new Smb2LockResponse(tc.getConfig());
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.smb2.RequestWithFileId#setFileId(byte[])
     */
    @Override
    public void setFileId ( byte[] fileId ) {