* Validate SMB message size
     *
     * @param size the message size
     * @param isSmb1 whether this is SMB1 protocol
     * @throws SmbException if size is invalid
     */
    public void validateMessageSize(int size, boolean isSmb1) throws SmbException {
        totalValidations.incrementAndGet();

        if (size < MIN_SMB_HEADER_SIZE) {
            failedValidations.incrementAndGet();