this.macSigningKey = macSigningKey;
        this.signSequence = initialSequence;
        this.bypass = bypass;

        if ( log.isTraceEnabled() ) {
            log.trace("macSigningKey:");
            log.trace(Hexdump.toHexString(macSigningKey, 0, macSigningKey.length));
        }
    }


    /**
     * This constructor used to instance a SigningDigest object for

                        log.trace(response.toString());
                        log.trace(Hexdump.toHexString(this.rcv_buf, 0, this.in.getLength()));
                    }

                    response.notify();
                }
            }
        }
        catch ( SocketTimeoutException ste ) {
            log.trace("Socket timeout", ste);
        }
        catch ( Exception ex ) {

        try {
            Type2Message msg2 = new Type2Message(token);

            if ( log.isTraceEnabled() ) {
                log.trace(msg2.toString());
                log.trace(Hexdump.toHexString(token));
            }

            this.serverChallenge = msg2.getChallenge();

            if ( this.requireKeyExchange ) {

        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

     * @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 ) {

        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 ) {

                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);
            }

    public void release () {
        long usage = this.usageCount.decrementAndGet();
        if ( log.isTraceEnabled() ) {
            log.trace("Release transport " + usage + " " + this);
        }

        if ( usage == 0 ) {
            if ( log.isTraceEnabled() ) {
                log.trace("Transport usage dropped to zero " + this);
            }
        }
        else if ( usage < 0 ) {

                if ( log.isDebugEnabled() ) {
                    log.debug("File pointer is at " + this.fp);
                }
            }
            return this.handle;
        }

        log.trace("File already open");
        return this.handle.acquire();
    }


    protected SmbTreeHandleImpl ensureTreeConnected () throws CIFSException {
        return this.file.ensureTreeConnected();
    }

            t.printStackTrace(pw);
            pw.flush();
            return systemHelper.abbreviateLongText(sw.toString());
        } catch (final IOException e) {
            logger.warn("Failed to print the stack trace {}", t.getMessage(), e);
        }
        return StringUtil.EMPTY;
    }