!7

static long timeout = 60000;
static ExpiringMap2<S, Bool> connectedComputers_internal = new ExpiringMap2(5000, f updateValue);
static Map<S, Bool> connectedComputers = synchroMap(connectedComputers_internal);
static Var<Int> connected2 = new(0);

svoid updateValue {
  int n = l(connectedComputers);
  connected2.set(n);
  print("Updated value to " + n);
}

html {
  int count = parseIntOpt('count);
  S computerID = subBot_getHeaders().get("X-ComputerID");
  bool longPoll = params.get('count) != null;
  if (!longPoll) ret connected2!;
  if (computerID != null) {
    print("Got connection from " + computerID);
    connectedComputers.put(computerID, true);
  }
  print(connected2! + ", eq: " + eq(connected2!, count));
  waitForVarToChange_withTimeout(connected2, count, timeout);
  ret connected2!;
}