/**
* Apply appropriate headers to the request
*
* @return void
*/
public function setHeaders()
{
$expire_in = getenv('CACHE_EXPIRATION_HOURS') ?: $this->cache_expiration_hours;
// Set time for cache expires. Default to 120 days (2880 hours)
$expires = $this->getRfcCompliantDate(Carbon::now(), $expire_in);
$last_modified = $this->getRfcCompliantDate(Carbon::now(), 0);
$max_age_seconds = $expire_in * 60 * 60;
header("Last-Modified: {$last_modified}");
header("Cache-Control: max-age={$max_age_seconds}");
header("Expires: {$expires}");
// File specific headers
header('Content-Type: ' . $this->file->getMimeType());
}
