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

    protected String geCharSet(final File file) {
        return charset;
    }

    public String getCharset() {
        return charset;
    }