try {
                            handlerClass = Class.forName(className);
                        }
                        catch ( Exception ex ) {
                            log.debug("Failed to load handler class " + className, ex);
                        }
                        if ( handlerClass == null ) {
                            handlerClass = ClassLoader.getSystemClassLoader().loadClass(className);

                        set.add(e);
                    }
                }
            }
            catch ( IOException ioe ) {
                log.debug("DS enumeration failed", ioe);
            }
        }

        SmbTreeConnection treeConn = SmbTreeConnection.create(tc);
        try ( SmbTreeHandleImpl th = treeConn.connectHost(locator, locator.getServerWithDfs());

            log.debug("Enabling LARGE_READX with " + this.readSizeFile);
        }
        else {
            log.debug("LARGE_READX disabled");
            this.readSizeFile = this.readSize;
        }

        if ( log.isDebugEnabled() ) {
            log.debug("Negotiated file read size is " + this.readSizeFile);
        }
    }


    /**

                long lm;

                if ( ( lm = f.lastModified() ) > this.lastModified ) {
                    if ( log.isDebugEnabled() ) {
                        log.debug("Reading " + tc.getConfig().getLmHostsFileName());
                    }
                    this.lastModified = lm;
                    this.table.clear();
                    try ( FileReader r = new FileReader(f) ) {

            target = target.toUpperCase(Locale.ROOT);
        }

        log.debug("Resolving \\" + target + "\\" + dfsShare + path);
        DfsReferralData ref = dfs.resolve(context, target, dfsShare, path);

        if ( ref != null ) {
            do {
                log.debug("ref " + ref);
            }
            while ( ( ref.next() != ref ) && ( ref = ref.next() ) != null );
        }

        }
        try {
            NegTokenInit tok = new NegTokenInit(initialToken);
            if ( log.isDebugEnabled() ) {
                log.debug("Have initial token " + tok);
            }
            if ( tok.getMechanisms() != null ) {
                Set<ASN1ObjectIdentifier> mechs = new HashSet<>(Arrays.asList(tok.getMechanisms()));

            String[] list = smbFile.list();
            assertNotNull(list);
            assertTrue("No share found", list.length > 0);
            log.debug(Arrays.toString(list));
        }
    }


    @Test
    public void testDomainSeverEnum () throws MalformedURLException, CIFSException {

        byte[] domain = new byte[0];
        if ( domainStr != null ) {
            try {
                domain = domainStr.getBytes(UNI_ENCODING);
            }
            catch ( IOException ex ) {
                log.debug("Failed to get domain bytes", ex);
            }
        }
        int domainLength = domain.length;
        byte[] server = new byte[0];
        String host = tc.getNameServiceClient().getLocalHost().getHostName();

        if ( t != null && Thread.currentThread() != t ) {
            this.thread = null;
            try {
                log.debug("Interrupting transport thread");
                t.interrupt();
                log.debug("Joining transport thread");
                t.join(timeout);
                log.debug("Joined transport thread");
            }
            catch ( InterruptedException e ) {

                        catch ( IOException ex ) {
                            log.debug("Connection failed " + dr.getServer(), ex);
                            e = ex;
                            dr = dr.next();
                            continue;
                        }
                    }

                    log.debug("No server name in referral");
                    return null;
                }