protected long delayMillisAfterProcessing = 0L;

    /** Delay in milliseconds when no URL is in the queue */
    protected long delayMillisAtNoUrlInQueue = 500L;

    /** Delay in milliseconds before processing a URL */
    protected long delayMillisBeforeProcessing = 0L;

    /** Delay in milliseconds for waiting for new URLs */
    protected long delayMillisForWaitingNewUrl = 1000L;

    protected IDTYPE id;

    /** The session ID associated with this URL queue. */
    protected String sessionId;

    /** The HTTP method used for the URL in the queue. */
    protected String method;

    /** The URL from the queue. */
    protected String url;

    /** The metadata associated with the URL queue. */
    protected String metaData;

    /** OpenSearch client. */
    protected final Client client;
    /** Analyzer settings index name. */
    protected final String analyzerSettingsIndexName;
    private final SuggestSettings settings;

    /** Analyzer map. */
    protected static Map<String, Set<String>> analyzerMap = new ConcurrentHashMap<>();
    /** Field analyzer mapping map. */

    }

    /** Header name for location redirects. */
    protected static final String LOCATION_HEADER = "Location";

    /** The crawler container for dependency injection. */
    @Resource
    protected CrawlerContainer crawlerContainer;

    /** Map of parser features to configure the DOM parser. */
    protected Map<String, String> featureMap = new HashMap<>();

    protected static final Pattern ALLOW_RECORD = Pattern.compile("^allow:\\s*([^\\s]*)\\s*$", Pattern.CASE_INSENSITIVE);

    /** Pattern for parsing crawl-delay records. */
    protected static final Pattern CRAWL_DELAY_RECORD = Pattern.compile("^crawl-delay:\\s*([^\\s]+)\\s*$", Pattern.CASE_INSENSITIVE);

    /**
     * Pattern for Sitemap record.
     */

    /** The name of the transformer. */
    protected String transformerName;

    /** The data of the result. */
    protected byte[] data;

    /** The encoding of the result. */
    protected String encoding;

    /** The set of the child URLs. */
    protected Set<RequestData> childUrlSet = new LinkedHashSet<>();

    /** The raw data. */
    protected Object rawData = null;

    /** The serializer. */

     * directory.
     */
    protected String path;

    /**
     * A string to replace ?.
     */
    protected String questionStr = "_QUEST_";

    /**
     * A string to replace :.
     */
    protected String colonStr = "_CLN_";

    /**
     * A string to replace ;.
     */
    protected String semicolonStr = "_SCLN_";

    /**
     * A string to replace &.

    /** The encoding for the output. */
    protected String outputEncoding = Constants.UTF_8;

    /** The extension for the output file. */
    protected String outputExtension = null;

    /** The temporary directory for input/output files. */
    protected File tempDir = null;

    /** The command to execute. */
    protected String command;

    /** The timeout for command execution in milliseconds. */

 * }
 * </pre>
 *
 */
public class IdnDnsResolver implements DnsResolver {

    /** Flag for IDN conversion. */
    protected int flag = 0;

    /** Encoding for URL decoding. */
    protected String encoding = "UTF-8";

    /**
     * Creates a new IdnDnsResolver instance with default settings.
     */
    public IdnDnsResolver() {
        super();
    }

    /**
     * Data service for checking access results.
     */
    @Resource
    protected OpenSearchDataService dataService;

    /**
     * Cache for session queues.
     */
    protected Map<String, QueueHolder> sessionCache = new ConcurrentHashMap<>();

    /**
     * The number of URLs to fetch when polling.
     */
    protected int pollingFetchSize = 1000;

    /**
     * The maximum size of the crawling queue.