/**
 *
 */
public interface Response extends Message {

    /**
     * 
     * @return whether the response is received
     */
    boolean isReceived ();


    /**
     * Set received status
     */
    void received ();


    /**
     * Unset received status
     */
    void clearReceived ();


    /**
     * 
     * @return number of credits granted by the server
     */

    val connection = connect(peer)
    connection.writePingAndAwaitPong() // Ensure the SETTINGS have been received.
    val stream = connection.newStream(headerEntries("a", "android"), true)
    val sink = stream.getSink().buffer()
    sink.writeUtf8("abcdefghi")
    sink.flush()

    // Verify the peer received what was expected.
    peer.takeFrame() // PING
    val headers = peer.takeFrame()

    def receive_wrapper(self, receive):
        received = 0

        async def inner():
            nonlocal received
            message = await receive()
            if message["type"] != "http.request":
                return message  # pragma: no cover

            body_len = len(message.get("body", b""))
            received += body_len
            if received > self.max_content_size:

	if err != nil {
		t.Fatalf("failed to write to server. %v", err)
	}

	received, err := bufio.NewReader(c).ReadString('\n')
	if err != nil {
		t.Fatalf("failed to read from server. %v", err)
	}
	if received != "messages received\n" {
		t.Fatalf(`client: expected: "messages received\n", got: %v`, received)
	}

	wg.Wait()

                         * loop around and try again.
                         */
                        if ( response.received && request.questionType == response.recordType )
                            return;

                        response.received = false;
                        timeout -= System.currentTimeMillis() - start;
                    }

                }

     */
    @Override
    public final void clearReceived () {
        this.received = false;
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.util.transport.Response#isReceived()
     */
    @Override
    public final boolean isReceived () {
        return this.received;
    }


    /**
     * {@inheritDoc}
     *

    }

    protected static Date getReceivedDate(final Message message) throws MessagingException {
        final Date today = new Date();
        final String[] received = message.getHeader("received");
        if (received != null) {
            for (final String v : received) {
                String dateStr = null;
                try {
                    dateStr = getDateString(v);

 */
@ExperimentalOkHttpApi
interface AsyncDns {
  /**
   * Query DNS records for `hostname`, in the order they are received.
   */
  fun query(
    hostname: String,
    callback: Callback,
  )

  /**
   * Callback to receive results from the DNS Queries.
   */
  @ExperimentalOkHttpApi
  interface Callback {
    /**

    webSocket: WebSocket,
    response: Response,
  ) {
  }

  /** Invoked when a text (type `0x1`) message has been received. */
  open fun onMessage(
    webSocket: WebSocket,
    text: String,
  ) {
  }

  /** Invoked when a binary (type `0x2`) message has been received. */
  open fun onMessage(
    webSocket: WebSocket,
    bytes: ByteString,
  ) {
  }

  /**

                         * loop around and try again.
                         */
                        if (response.received && request.questionType == response.recordType)
                            return;

                        response.received = false;
                        timeout -= System.currentTimeMillis() - start;
                    }