/**
* {@inheritdoc}
*/
public function start()
{
if (($this->started || $this->startedLazy) && !$this->closed) {
return $this->started;
}
$request = $this->requestStack->getCurrentRequest();
$this->setOptions($this->sessionConfiguration->getOptions($request));
if ($this->sessionConfiguration->hasSession($request)) {
// If a session cookie exists, initialize the session. Otherwise the
// session is only started on demand in save(), making
// anonymous users not use a session cookie unless something is stored in
// $_SESSION. This allows HTTP proxies to cache anonymous pageviews.
$result = $this->startNow();
}
if (empty($result)) {
// Randomly generate a session identifier for this request. This is
// necessary because \Drupal\user\SharedTempStoreFactory::get() wants to
// know the future session ID of a lazily started session in advance.
//
// @todo: With current versions of PHP there is little reason to generate
// the session id from within application code. Consider using the
// default php session id instead of generating a custom one:
// https://www.drupal.org/node/2238561
$this->setId(Crypt::randomBytesBase64());
// Initialize the session global and attach the Symfony session bags.
$_SESSION = array();
$this->loadSession();
// NativeSessionStorage::loadSession() sets started to TRUE, reset it to
// FALSE here.
$this->started = FALSE;
$this->startedLazy = TRUE;
$result = FALSE;
}
return $result;
}
