if (failed || enqueuedClose && messageAndCloseQueue.isEmpty()) return

    pongQueue.add(payload)
    runWriter()
    receivedPingCount++
  }

  @Synchronized override fun onReadPong(payload: ByteString) {
    // This API doesn't expose pings.
    receivedPongCount++
    awaitingPong = false
  }

  override fun onReadClose(
    code: Int,
    reason: String,
  ) {