}

  /** A request body that fires events when it completes. */
  private inner class RequestBodySink(
    delegate: Sink,
    /** The exact number of bytes to be written, or -1L if that is unknown. */
    private val contentLength: Long,
  ) : ForwardingSink(delegate) {
    private var completed = false
    private var bytesReceived = 0L

    frame.writeByte(Http2.TYPE_SETTINGS)
    frame.writeByte(FLAG_NONE)
    frame.writeInt(0) // Settings are always on the connection stream 0.
    frame.writeShort(7) // old number for SETTINGS_INITIAL_WINDOW_SIZE
    frame.writeInt(1)
    val settingValue = AtomicInteger()
    reader.nextFrame(
      requireSettings = false,
      object : BaseTestHandler() {
        override fun settings(