srecord noeq ComputerCountListener(StefansOS_ConnectToServer connector) {
  new VarWithNotify<Int> computerCount;
  
  void init {
    connector.onNewLine(line -> {
      new Matches m;
      if (swic(line, "ComputerIDs = ", m)) {
        var computerIDs = (LS) safeUnstruct($1);
        computerCount.set(l(computerIDs));
        print("Computer IDs: " + computerIDs);
      }
    });
    
    connector.sub("computerIDs");
  };
  
  LiveValue<Int> liveValue() { ret varWithNotifyToLiveValue(Int, computerCount); }
  
  Int get() { ret computerCount!; }
}