username             (string)    MQTT username
password             (string)    MQTT password
qos                  (number)    set the quality of service priority, defaults to '0'
keep_alive_interval  (duration)  keep-alive interval for MQTT connections in s,m,h,d
reconnect_interval   (duration)  reconnect interval for MQTT connections in s,m,h,d
queue_dir            (path)      staging dir for undelivered messages e.g. '/home/events'

    /**
     * Sets the interval between HTTP/2 and web socket pings initiated by this client. Use this to
     * automatically send ping frames until either the connection fails or it is closed. This keeps
     * the connection alive and may detect connectivity failures.
     *
     * If the server does not respond to each ping with a pong within `interval`, this client will

    Applications should avoid creating many connection pools as doing so
    prevents connection reuse. Each connection pool holds its own set of
    connections alive so applications that have many pools also risk exhausting
    memory!

    The best practice in OkHttp 3 is to create a single OkHttpClient instance

        do {
            if (readn(this.in, this.sbuf, 0, 4) < 4) {
                return null;
            }
        } while (this.sbuf[0] == (byte) 0x85); /* Dodge NetBIOS keep-alive */
        /* read smb header */
        if (readn(this.in, this.sbuf, 4, SmbConstants.SMB1_HEADER_LENGTH) < SmbConstants.SMB1_HEADER_LENGTH) {
            return null;
        }

        if (log.isTraceEnabled()) {

    public void clear() {
      multimap.clear();
    }
  }

  /**
   * Returns a multimap containing the mappings in {@code unfiltered} whose keys satisfy a
   * predicate. The returned multimap is a live view of {@code unfiltered}; changes to one affect
   * the other.
   *
   * <p>The resulting multimap's views have iterators that don't support {@code remove()}, but all

      int maxSize() {
        return saturatedAdd(maxSize(set1), maxSize(set2));
      }
    };
  }

  /**
   * Returns the elements of {@code unfiltered} that satisfy a predicate. The returned set is a live
   * view of {@code unfiltered}; changes to one affect the other.
   *
   * <p>The resulting set's iterator does not support {@code remove()}, but all other set methods

 *   <li>MAX_TOTAL_CONNECTION_PROPERTY: Maximum total connections.</li>
 *   <li>TIME_TO_LIVE_TIME_UNIT_PROPERTY: Time to live unit for connections.</li>
 *   <li>TIME_TO_LIVE_PROPERTY: Time to live for connections.</li>
 * </ul>
 *
 */
public class HcHttpClient extends AbstractCrawlerClient {

    /**
     * Constructs a new HcHttpClient.
     */

     */
    public EntraIdAuthenticator() {
        // Default constructor
    }

    // New configuration keys for Entra ID
    /** Configuration key for Entra ID state time-to-live. */
    protected static final String ENTRAID_STATE_TTL = "entraid.state.ttl";

    /** Configuration key for Entra ID authority URL. */
    protected static final String ENTRAID_AUTHORITY = "entraid.authority";

    void setValue(S segment, E entry, V value);
  }

  /**
   * An entry in a hash table of a {@link Segment}.
   *
   * <p>Entries in the map can be in the following states:
   *
   * <p>Valid: - Live: valid key/value are set
   *
   * <p>Invalid: - Collected: key/value was partially collected, but not yet cleaned up
   */
  interface InternalEntry<K, V, E extends InternalEntry<K, V, E>> {