protected static function getRetryDelay($retries, AbstractTransferEvent $event, $headerName)
{
if (is_null($event->getResponse()) || !$event->getResponse()->hasHeader($headerName)) {
return RetrySubscriber::exponentialDelay($retries, $event);
}
$retryAfter = $event->getResponse()->getHeader($headerName);
if (is_numeric($retryAfter)) {
if ($retryAfter < time() - strtotime('1 day', 0)) {
return $retryAfter;
} else {
return $retryAfter - time();
}
}
if (Utils::isValidDateTimeString($retryAfter, DATE_RFC1123)) {
$date = \DateTime::createFromFormat(DATE_RFC1123, $retryAfter);
return $date->getTimestamp() - time();
}
return RetrySubscriber::exponentialDelay($retries, $event);
}
