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