*/
class Http2FlowControlConnectionListener : ConnectionListener(), FlowControlListener {
  val start = System.currentTimeMillis()

  override fun receivingStreamWindowChanged(
    streamId: Int,
    windowCounter: WindowCounter,
    bufferSize: Long,
  ) {
    println("${System.currentTimeMillis() - start},$streamId,${windowCounter.unacknowledged},$bufferSize")
  }