if ( log.isTraceEnabled() ) {
            log.trace(req.toString());
            log.trace(Hexdump.toHexString(this.sbuf, 4, n));
        }

        this.out.write(this.sbuf, 0, 4 + n);
        this.out.flush();
        log.trace("Wrote negotiate request");
        return n;
    }


    /**
     * @throws SocketException

                resp = new NtTransNotifyChangeResponse(th.getConfig());
            }

            if ( log.isTraceEnabled() ) {
                log.trace("Sending NtTransNotifyChange for " + this.handle);
            }
            try {
                resp = th.send(req, resp, RequestParam.NO_TIMEOUT, RequestParam.NO_RETRY);
            }

            off = ( off & 0xFFFF ) - this.converter;
            off = start + off;
            e.commentOrMasterBrowser = readString(buffer, off, 48, false);

            if ( log.isTraceEnabled() ) {
                log.trace(e.toString());
            }
        }
        setResults(results);
        this.lastName = e == null ? null : e.name;
        return bufferIndex - start;
    }


    @Override

            int n;
            if ( ( n = readParameterWordsWireFormat(buffer, bufferIndex) ) != this.wordCount * 2 ) {
                if ( log.isTraceEnabled() ) {
                    log.trace("wordCount * 2=" + ( this.wordCount * 2 ) + " but readParameterWordsWireFormat returned " + n);
                }
            }
            bufferIndex += this.wordCount * 2;
        }

     * @return whether to use strict resource lifecycle
     */
    boolean isStrictResourceLifecycle ();


    /**
     * This is solely intended for debugging
     * 
     * @return whether to track the locations from which resources were created
     */
    boolean isTraceResourceUsage ();


    /**
     * @param command
     * @return whether to allow creating compound requests with that command

        return response;
    }


    @Override
    public boolean exists () throws SmbException {

        if ( this.attrExpiration > System.currentTimeMillis() ) {
            log.trace("Using cached attributes");
            return this.isExists;
        }

        this.attributes = ATTR_READONLY | ATTR_DIRECTORY;
        this.createTime = 0L;
        this.lastModified = 0L;

     * @return tree connection with increased usage count
     */
    public SmbTreeConnection acquire () {
        long usage = this.usageCount.incrementAndGet();
        if ( log.isTraceEnabled() ) {
            log.trace("Acquire tree connection " + usage + " " + this);
        }

        if ( usage == 1 ) {
            synchronized ( this ) {
                try ( SmbTreeImpl t = getTree() ) {
                    if ( t != null ) {

                }
                catch ( SmbException se ) {
                    if ( log.isTraceEnabled() ) {
                        log.trace("Send failed", se);
                        log.trace("Request: " + request);
                        log.trace("Response: " + response);
                    }
                    throw se;
                }
            }
            finally {

        if ( port <= 0 ) {
            port = SmbConstants.DEFAULT_PORT;
        }
        synchronized ( this.connections ) {
            cleanup();
            if ( log.isTraceEnabled() ) {
                log.trace("Exclusive " + nonPooled + " enforced signing " + forceSigning);
            }
            if ( !nonPooled && tc.getConfig().getSessionLimit() != 1 ) {

            throw new PACDecodingException("Missing required buffers");
        }

        if ( log.isTraceEnabled() ) {
            log.trace(
                String.format(
                    "Checksum data %s type %d signature %s",
                    Hexdump.toHexString(checksumData),
                    this.serverSignature.getType(),