This could have been solved with the expressions in 2.4 but sadly they are not supported inside config files. #9658

Yeah, I understand why though. At least, in my case, there's a pretty simple workaround (the one I mentioned above) so it becomes a trivial problem. I see potential issues with it, like the ones you pointed out in your link, which require a lot more work to get around.

👍 I've also been looking for an elegant way to do this. As a workaround I've been setting the cookie domain in the front controller (e.g., app.php):

// Dynamic session domain support                                                         
session_name($some_name);                                                           
session_set_cookie_params (2678400, '/', $some_domain, false, true);

Also see a related comment here --> opensky/OpenSkyRuntimeConfigBundle#10 (comment)

Closing as this should be solvable with environment variables now. Please report back if not.

Hi @wholehogsoftware

How did you solve case? I have a similar one. As I don't want to expose a session to other white-label by any means, I am probably going to write a custom session handler. I am using MySQL for storing the session, so will add an extra column which will contain a session domain or WL identifier 🤔

I'm interested to. @nicolas-grekas I don't see how environment variables are helping here, do you mean we should have different environment variables per vhost ?

Hi @wholehogsoftware

How did you solve case? I have a similar one. As I don't want to expose a session to other white-label by any means, I am probably going to write a custom session handler. I am using MySQL for storing the session, so will add an extra column which will contain a session domain or WL identifier 🤔

I encounter same problem recently, I solved this case with response subscriber and it seems work fine for me:

$cookieDomain = $this->getCookieDomain($request->getHost());
$cookies = $response->headers->getCookies();
if (($cookieDomain != $request->getHost()) && !empty($cookies)) {
    foreach ($cookies as $cookie) {
        if ($cookie instanceof Cookie && $cookie->getDomain() != $cookieDomain) {
            $newCookie = Cookie::create(
                $cookie->getName(),
                $cookie->getValue(),
                $cookie->getExpiresTime(),
                $cookie->getPath(),
                $cookieDomain,
                $cookie->isSecure(),
                $cookie->isHttpOnly(),
                false,
                $cookie->getSameSite()
            );

            $response->headers->setCookie($newCookie);
            $response->headers->removeCookie($cookie->getName(), $cookie->getPath(), $cookie->getDomain());
        }
    }
}

Please note that the event priority must be less than -1000 (the session listener):

    public static function getSubscribedEvents(): array
    {
        return [
            ResponseEvent::class => [
                ['onKernelResponse', -1024]
            ]
        ];
    }

With this solution, no need to create new session handler.

@boosen I don't remember. The original comment is a decade old and I haven't used Symfony in years. Sorry I can't be of more assistance!

Edit: Oh, I see. You're proposing a solution. Crazy to see this is still a thing a decade later!