* canceling may break the entire connection.
 */
class RealCall(
  val client: OkHttpClient,
  /** The application's original request unadulterated by redirects or auth headers. */
  val originalRequest: Request,
  val forWebSocket: Boolean,
) : Call,
  Cloneable,
  Lockable {
  private val connectionPool: RealConnectionPool = client.connectionPool.delegate

  @Volatile

    Name questionName;
    Name recordName;

    int questionType, questionClass, recordType, recordClass, ttl, rDataLength;

    InetAddress addr;
    protected Configuration config;

    NameServicePacket(final Configuration config) {
        this.config = config;
        this.isRecurDesired = true;
        this.isBroadcast = true;

     * @param defaultOperator the default operator (AND or OR)
     */
    public void setDefaultOperator(final Operator defaultOperator) {
        this.defaultOperator = defaultOperator;
    }

    /**
     * Adds a filter to the query processing chain.
     * The filter chain is recreated after adding the filter.
     *
     * @param filter the filter to add
     */
    public void addFilter(final Filter filter) {

    Name questionName;
    Name recordName;

    int questionType, questionClass, recordType, recordClass, ttl, rDataLength;

    InetAddress addr;

    NameServicePacket() {
        isRecurDesired = true;
        isBroadcast = true;
        questionCount = 1;
        questionClass = IN;
    }

 * </ul>
 *
 * <p>Children combination modes (specified by {@code combine.children} attribute):</p>
 * <ul>
 *   <li>{@code merge} (default): Merges elements with matching names</li>
 *   <li>{@code append}: Adds elements as siblings</li>
 * </ul>
 *
 * <p>Self combination modes (specified by {@code combine.self} attribute):</p>
 * <ul>
 *   <li>{@code merge} (default): Merges attributes and values</li>

* the form model
* the model object

* the class
* the base class
* the parent class
* the subclass
* the child class
* the sibling class
* the class method

* the header
* the headers
* the authorization header
* the `Authorization` header
* the forwarded header

* the dependency injection system
* the dependency
* the dependable
* the dependant

* I/O bound
* CPU bound

        if (cachedXPathAPI == null) {
            cachedXPathAPI = new XPathAPI();
            xpathAPI.set(cachedXPathAPI);
        }
        return cachedXPathAPI;
    }

    /**
     * Adds a metadata field with its corresponding XPath expression for extraction.
     *
     * @param name the name of the metadata field
     * @param xpath the XPath expression to extract the metadata value
     */

  /** Method reference-compatible listener event. */
  interface Event<L> {
    /** Call a method on the listener. */
    void call(L listener);
  }

  /**
   * Adds a listener that will be called using the given executor when events are later {@link
   * #enqueue enqueued} and {@link #dispatch dispatched}.
   */
  public void addListener(L listener, Executor executor) {

      }

    fun addPathSegment(pathSegment: String) =
      apply {
        push(pathSegment, 0, pathSegment.length, addTrailingSlash = false, alreadyEncoded = false)
      }

    /**
     * Adds a set of path segments separated by a slash (either `\` or `/`). If `pathSegments`
     * starts with a slash, the resulting URL will have empty path segment.
     */

    )
  }

  /**
   * Returns a request that creates a TLS tunnel via an HTTP proxy. Everything in the tunnel request
   * is sent unencrypted to the proxy server, so tunnels include only the minimum set of headers.
   * This avoids sending potentially sensitive data like HTTP cookies to the proxy unencrypted.
   *
   * In order to support preemptive authentication we pass a fake "Auth Failed" response to the