<br />
<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_hss62o2019hg1hm1mvtj9t2r02, O_RDWR) failed: No space left on device (28) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
<br />
<b>Warning</b>:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
!7

set flag ExpiringMap2_debug.

static long timeout = 60000;
static ExpiringMap2<S, Bool> recenctlyConnectedComputers_internal = new ExpiringMap2(5000, f updateValue);
static new MultiSet<S> activeConnections;
static Map<S, Bool> recentlyConnectedComputers = synchroMap(recenctlyConnectedComputers_internal);
static Var<Int> connected2 = new(0);

svoid updateValue {
  Set<S> set1 = keys(activeConnections);
  Set<S> set2 = keys(recentlyConnectedComputers);
  int n = l(mergeSets(set1, set2));
  //int n = l(connectedComputers);
  connected2.set(n);
  print("Updated value to " + n + " (" + l(set1) + "/" + l(set2) + ")");
  
  // TODO (maybe): add countdown to ExpiringMap instead
  doEvery(1000, r {
    synchronized(recentlyConnectedComputers) {
      recenctlyConnectedComputers_internal.clean();
    }
  });
}

html {
  int count = parseIntOpt(params.get('count));
  S computerID = or2(subBot_getHeader("X-ComputerID"), "unknown");
  bool longPoll = params.get('count) != null;
  if (!longPoll) ret connected2!;
  
  temp tempAddToMultiSet(activeConnections, computerID);
  temp tempAfterwards(r updateValue);
  updateValue();
  if (computerID != null) {
    print("Got connection from " + computerID);
    recentlyConnectedComputers.put(computerID, true);
  }
  
  print(connected2! + ", eq: " + eq(connected2!, count));
  waitForVarToChange_withTimeout(connected2, count, timeout);
  ret connected2!;
}