public SMBProtocolDowngradeException ( String message, Throwable cause ) {
        super(message, cause);
    }


    /**
     * @param message
     */
    public SMBProtocolDowngradeException ( String message ) {
        super(message);
    }


    /**
     * @param cause
     */
    public SMBProtocolDowngradeException ( Throwable cause ) {
        super(cause);
    }

        Smb2IoctlResponse resp;
        try {
            resp = send(req, RequestParam.NO_RETRY);
        }
        catch ( SMBSignatureValidationException e ) {
            throw new SMBProtocolDowngradeException("Signature error during negotiate validation", e);
        }
        catch ( SmbException e ) {
            if ( log.isDebugEnabled() ) {