length = 4,
        type = TYPE_WINDOW_UPDATE,
        flags = FLAG_NONE,
      )
      sink.writeInt(windowSizeIncrement.toInt())
      sink.flush()
    }
  }

  @Throws(IOException::class)
  fun frameHeader(
    streamId: Int,
    length: Int,
    type: Int,
    flags: Int,
  ) {
    if (type != TYPE_WINDOW_UPDATE && logger.isLoggable(FINE)) {

    for (i in 0..2) {
      val windowUpdateStreamIds: MutableList<Int?> = ArrayList(2)
      for (j in 0..1) {
        val windowUpdate = peer.takeFrame()
        assertThat(windowUpdate.type).isEqualTo(Http2.TYPE_WINDOW_UPDATE)
        windowUpdateStreamIds.add(windowUpdate.streamId)
        assertThat(windowUpdate.windowSizeIncrement).isEqualTo(windowUpdateThreshold.toLong())
      }
      // connection