}
            NtlmPasswordAuthentication ntlm;
            if ( msg.startsWith("NTLM ") ) {
                byte[] challenge = getTransportContext().getTransportPool().getChallenge(getTransportContext(), dc);
                ntlm = NtlmSsp.authenticate(getTransportContext(), request, response, challenge);
                if ( ntlm == null )
                    return;
            }

        return getChallenge(tf, dc, 0);
    }


    @Override
    public byte[] getChallenge ( CIFSContext tf, Address dc, int port ) throws SmbException {
        try ( SmbTransportInternal trans = tf.getTransportPool()
                .getSmbTransport(tf, dc, port, false, !tf.getCredentials().isAnonymous() && tf.getConfig().isIpcSigningEnforced())
                .unwrap(SmbTransportInternal.class) ) {
            trans.ensureConnected();

    }


    @Override
    public BufferCache getBufferCache () {
        return this.delegate.getBufferCache();
    }


    @Override
    public SmbTransportPool getTransportPool () {
        return this.delegate.getTransportPool();
    }


    @Override
    public boolean close () throws CIFSException {
        return this.delegate.close();
    }

                }
                else {
                    dc = getTransportContext().getNameServiceClient().getByName(this.domainController, true);
                    challenge = getTransportContext().getTransportPool().getChallenge(getTransportContext(), dc);
                }

                if ( ( ntlm = NtlmSsp.authenticate(getTransportContext(), req, resp, challenge) ) == null ) {
                    return null;

        ctx.getTransportPool().logon(ctx, ctx.getNameServiceClient().getByName(getTestServer()));
    }


    // #68
    @Test ( expected = SmbException.class )
    public void testPoolLogonFail () throws CIFSException, UnknownHostException {
        CIFSContext ctx = withTestNTLMCredentials(getContext());

    @Test
    public void testOpenOplocked () throws UnknownHostException, IOException {
        CIFSContext c = getContext();
        c = withTestNTLMCredentials(c);
        try ( SmbTransportInternal trans = c.getTransportPool().getSmbTransport(c, getTestServer(), 0, false, true)
                .unwrap(SmbTransportInternal.class);
              SmbSession sess = trans.unwrap(SmbTransportInternal.class).getSmbSession(c, getTestServer(), null);

    /**
     * @return the buffer cache
     */
    BufferCache getBufferCache ();


    /**
     * @return the transport pool
     */
    SmbTransportPool getTransportPool ();


    /**
     * @return the DFS instance for this context
     */
    DfsResolver getDfs ();


    /**
     * @return the SID resolver for this context
     */

            // https://lists.samba.org/archive/samba-technical/2009-August/066486.html
            // UniAddress addr = UniAddress.getByName(authDomain, true, tf);
            // SmbTransport trans = tf.getTransportPool().getSmbTransport(tf, addr, 0);
            try ( SmbTransport dc = getDc(tf, authDomain) ) {
                CacheEntry<Map<String, CacheEntry<DfsReferralDataInternal>>> entry = new CacheEntry<>(tf.getConfig().getDfsTtl() * 10L);

                    if ( log.isDebugEnabled() ) {
                        log.debug("Using exclusive transport for " + this);
                    }
                    this.exclusiveTransport = this.ctx.getTransportPool()
                            .getSmbTransport(this.ctx, host, loc.getPort(), true, loc.shouldForceSigning()).unwrap(SmbTransportInternal.class);
                    SmbTransportInternal trans = this.exclusiveTransport;

        }
        catch ( MalformedURLException e ) {
            throw new CIFSException("Invalid URL " + url, e);
        }
    }


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


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