throw new SmbException("Not an SMB1 request");
        }

        this.negotiated.setupRequest(request);

        if ( response != null ) {
            request.setResponse(response); /* needed by sign */
            response.setDigest(request.getDigest());
        }

        try {
            if ( log.isTraceEnabled() ) {
                log.trace("Sending " + request);
            }