protected function unfinishedResponses()
{
$now = TimeSupport::now();
$unfinishedReps = [];
foreach ($this->reps as $pid => $response) {
if ($now >= $response->timeout) {
$unfinishedReps[] = $response;
$response->timeout = $now + $response->timeoutIncrease;
}
}
return $unfinishedReps;
}