final int replyCode = client.getReplyCode();
        if (replyCode >= 200 && replyCode < 300) {
            return;
        }
        throw new CrawlingAccessException("Failed FTP request: " + client.getReplyString().trim());
    }

    /**
     * Determines the character set for the given file.
     * Currently returns the default charset configured for this client.
     *