},
        {
            "year": 2018,
            "publisher": "Harper Voyager",
            "type": "Paperback",
            "pages": 432
        }
    ]
}
{
    "title": "Pigs Have Wings",
    "authorInfo": {
        "name": "P. G. Wodehouse",
        "yearRange": [1881, 1975]
    },
    "genre": "Comic novel",
    "publicationHistory": [
        {
            "year": 1952,

		participle.CaseInsensitive("Keyword"),
	)
	cases := []struct {
		str string
		res []interface{}
	}{
		{"s.title", []interface{}{"Murder on the Orient Express", "The Robots of Dawn", "Pigs Have Wings"}},
		{"s.authorInfo.yearRange", []interface{}{[]interface{}{1890.0, 1976.0}, []interface{}{1920.0, 1992.0}, []interface{}{1881.0, 1975.0}}},
		{"s.authorInfo.name", []interface{}{"Agatha Christie", "Isaac Asimov", "P. G. Wodehouse"}},

she found to be nothing but the tops of the trees under which she
had been wandering, when a sharp hiss made her draw back in a
hurry:  a large pigeon had flown into her face, and was beating
her violently with its wings.

  `Serpent!' screamed the Pigeon.

  `I'm NOT a serpent!' said Alice indignantly.  `Let me alone!'

  `Serpent, I say again!' repeated the Pigeon, but in a more

she found to be nothing but the tops of the trees under which she
had been wandering, when a sharp hiss made her draw back in a
hurry:  a large pigeon had flown into her face, and was beating
her violently with its wings.

  `Serpent!' screamed the Pigeon.

  `I'm NOT a serpent!' said Alice indignantly.  `Let me alone!'

  `Serpent, I say again!' repeated the Pigeon, but in a more

  /** True if this web socket failed and the listener has been notified. */
  private var failed = false

  /** Total number of pings sent by this web socket. */
  private var sentPingCount = 0

  /** Total number of pings received by this web socket. */
  private var receivedPingCount = 0

  /** Total number of pongs received by this web socket. */
  private var receivedPongCount = 0

     *
     * The default value of 0 disables client-initiated pings.
     */
    fun pingInterval(
      interval: Long,
      unit: TimeUnit,
    ) = apply {
      pingInterval = checkDuration("interval", interval, unit)
    }

    /**
     * Sets the interval between HTTP/2 and web socket pings initiated by this client. Use this to

    assertThat(server.receivedPongCount()).isEqualTo(0)
    closeWebSockets(webSocket, server)
  }

  /**
   * Configure the websocket to send pings every 500 ms. Artificially prevent the server from
   * responding to pings. The client should give up when attempting to send its 2nd ping, at about
   * 1000 ms.
   */
  @Test
  fun unacknowledgedPingFailsConnection() {
    assumeNotWindows()

    pings, but it did not track whether the reply pongs were received. With this
    update OkHttp requires that every ping receive a response: if it does not
    the connection will be closed and the listener's `onFailure()` method will
    be called.

    Web sockets have always been had pings, but pings on HTTP/2 connections is
    new in this release. Pings are used for connections that are busy carrying

  private val settingsListenerQueue = taskRunner.newQueue()

  /** User code to run in response to push promise events. */
  private val pushObserver: PushObserver = builder.pushObserver

  // Total number of pings send and received of the corresponding types. All guarded by this.
  private var intervalPingsSent = 0L
  private var intervalPongsReceived = 0L
  private var degradedPingsSent = 0L
  private var degradedPongsReceived = 0L

## Version 4.3.0

_2019-12-31_

 *  Fix: Degrade HTTP/2 connections after a timeout. When an HTTP/2 stream times out it may impact
    the stream only or the entire connection. With this fix OkHttp will now send HTTP/2 pings after
    a stream timeout to determine whether the connection should remain eligible for pooling.

 *  Fix: Don't call `EventListener.responseHeadersStart()` or `responseBodyStart()` until bytes have