Neos\Flow\Session\Session::start PHP Метод

    public function start()
    {
        if ($this->request === null) {
            $requestHandler = $this->bootstrap->getActiveRequestHandler();
            if (!$requestHandler instanceof HttpRequestHandlerInterface) {
                throw new Exception\InvalidRequestHandlerException('Could not start a session because the currently active request handler (%s) is not an HTTP Request Handler.', 1364367520);
            }
            $this->initializeHttpAndCookie($requestHandler);
        }
        if ($this->started === false) {
            $this->sessionIdentifier = Algorithms::generateRandomString(32);
            $this->storageIdentifier = Algorithms::generateUUID();
            $this->sessionCookie = new Http\Cookie($this->sessionCookieName, $this->sessionIdentifier, 0, $this->sessionCookieLifetime, $this->sessionCookieDomain, $this->sessionCookiePath, $this->sessionCookieSecure, $this->sessionCookieHttpOnly);
            $this->response->setCookie($this->sessionCookie);
            $this->lastActivityTimestamp = $this->now;
            $this->started = true;
            $this->writeSessionMetaDataCacheEntry();
        }
    }