Thruway\RealmManager::handlePreHelloMessage PHP Method

    public function handlePreHelloMessage(MessageEvent $event)
    {
        /** @var HelloMessage $msg */
        $msg = $event->message;
        $session = $event->session;
        $session->setHelloMessage($msg);
        try {
            $realm = $this->getRealm($msg->getRealm());
            $realm->addSession($session);
        } catch (\Exception $e) {
            // TODO: Test this
            $errorUri = "wamp.error.unknown";
            $description = $e->getMessage();
            if ($e instanceof InvalidRealmNameException || $e instanceof RealmNotFoundException) {
                $errorUri = "wamp.error.no_such_realm";
            }
            $session->abort(['description' => $description], $errorUri);
        }
    }