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setExpires example

$response = new Response();

            foreach ($config as $key => $value) {
                switch ($key) {
                    case 'age':
                        $response->headers->set('Age', $value);
                        break;

                    case 'expires':
                        $expires = clone $response->getDate();
                        $expires = $expires->modify('+'.$value.' seconds');
                        $response->setExpires($expires);
                        break;

                    case 'max-age':
                        $response->setMaxAge($value);
                        break;

                    case 's-maxage':
                        $response->setSharedMaxAge($value);
                        break;

                    case 'private':

public function testSetDateWithImmutable()
    {
        $response = new Response();
        $response->setDate(\DateTimeImmutable::createFromFormat(\DateTimeInterface::ATOM, '2013-01-26T09:21:56+0100', new \DateTimeZone('Europe/Berlin')));

        $this->assertEquals('2013-01-26T08:21:56+00:00', $response->getDate()->format(\DateTimeInterface::ATOM));
    }

    public function testSetExpires()
    {
        $response = new Response();
        $response->setExpires(null);

        $this->assertNull($response->getExpires(), '->setExpires() remove the header when passed null');

        $now = $this->createDateTimeNow();
        $response->setExpires($now);

        $this->assertEquals($response->getExpires()->getTimestamp(), $now->getTimestamp());
    }

    public function testSetExpiresWithImmutable()
    {

        if ($maxAge) {
            $this->setMaxAge($maxAge);
        }

        if ($domain) {
            $this->setDomain($domain);
        }

        if ($expires) {
            $this->setExpires($expires);
        }

        if ($path) {
            $this->setPath($path);
        }

        if ($secure) {
            $this->setSecure($secure);
        }

        if ($httponly) {

            }
        }

        if ($session instanceof Session ? 0 === $session->getUsageIndex() : !$session->isStarted()) {
            return;
        }

        if ($autoCacheControl) {
            $maxAge = $response->headers->hasCacheControlDirective('public') ? 0 : (int) $response->getMaxAge();
            $response
                ->setExpires(new \DateTimeImmutable('+'.$maxAge.' seconds'))
                ->setPrivate()
                ->setMaxAge($maxAge)
                ->headers->addCacheControlDirective('must-revalidate');
        }

        if (!$event->getRequest()->attributes->get('_stateless', false)) {
            return;
        }

        if ($this->debug) {
            throw new UnexpectedSessionUsageException('Session was used while the request was declared stateless.');
        }

            if (null !== $cache->staleWhileRevalidate && !$response->headers->hasCacheControlDirective('stale-while-revalidate')) {
                $response->headers->addCacheControlDirective('stale-while-revalidate', $this->toSeconds($cache->staleWhileRevalidate));
            }

            if (null !== $cache->staleIfError && !$response->headers->hasCacheControlDirective('stale-if-error')) {
                $response->headers->addCacheControlDirective('stale-if-error', $this->toSeconds($cache->staleIfError));
            }

            if (null !== $cache->expires && !$response->headers->has('Expires')) {
                $response->setExpires(new \DateTimeImmutable('@'.strtotime($cache->expires, time())));
            }

            if (!$hasVary && $cache->vary) {
                $response->setVary($cache->vary, false);
            }
        }

        foreach ($attributes as $cache) {
            if (true === $cache->public) {
                $response->setPublic();
            }

  protected function setExpiresNoCache(Response $response) {
    $response->setExpires(\DateTime::createFromFormat('j-M-Y H:i:s T', '19-Nov-1978 05:00:00 UTC'));
  }

  /** * Registers the methods in this class that should be listeners. * * @return array * An array of event listener definitions. */
  public static function getSubscribedEvents(): array {
    $events[KernelEvents::RESPONSE][] = ['onRespond'];
    // There is no specific reason for choosing 16 beside it should be executed

if (is_numeric($this->ageDirectives['s-maxage'])) {
            $sMaxage = $this->ageDirectives['s-maxage'] + $this->age;

            if ($maxAge !== $sMaxage) {
                $response->headers->addCacheControlDirective('s-maxage', $sMaxage);
            }
        }

        if (is_numeric($this->ageDirectives['expires'])) {
            $date = clone $response->getDate();
            $date = $date->modify('+'.($this->ageDirectives['expires'] + $this->age).' seconds');
            $response->setExpires($date);
        }
    }

    /** * RFC2616, Section 13.4. * * @see https://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.4 */
    private function willMakeFinalResponseUncacheable(Response $response): bool
    {
        // RFC2616: A response received with a status code of 200, 203, 300, 301 or 410

        if (isset($data['Path'])) {
            $this->setPath($data['Path']);
        }

        if (isset($data['Max-Age'])) {
            $this->setMaxAge($data['Max-Age']);
        }

        if (isset($data['Expires'])) {
            $this->setExpires($data['Expires']);
        }

        if (isset($data['Secure'])) {
            $this->setSecure($data['Secure']);
        }

        if (isset($data['Discard'])) {
            $this->setDiscard($data['Discard']);
        }

        if (isset($data['HttpOnly'])) {

private function addNoStoreHeader(Request $request, Response $response): void
    {
        if (!$request->attributes->has(PlatformRequest::ATTRIBUTE_NO_STORE)) {
            return;
        }

        $response->setMaxAge(0);
        $response->headers->addCacheControlDirective('no-cache');
        $response->headers->addCacheControlDirective('no-store');
        $response->headers->addCacheControlDirective('must-revalidate');
        $response->setExpires(new \DateTime('@0'));
    }
}

// The Expires HTTP header is the heart of the client-side HTTP caching. The     // additional server-side page cache only takes effect when the client     // accesses the callback URL again (e.g., after clearing the browser cache     // or when force-reloading a Drupal page).     $max_age = 365 * 24 * 60 * 60;
    $response->setPrivate();
    $response->setMaxAge($max_age);

    $expires = new \DateTime();
    $expires->setTimestamp(REQUEST_TIME + $max_age);
    $response->setExpires($expires);

    return $response;
  }

  /** * Checks access for the subtree controller. * * @param string $hash * The hash of the toolbar subtrees. * * @return \Drupal\Core\Access\AccessResultInterface * The access result. */

expires: 'Fri, 24 Aug 2013 00:00:00 GMT',
            maxage: '15',
            smaxage: '15',
            vary: ['foobar'],
            lastModified: 'Fri, 24 Aug 2013 00:00:00 GMT',
            etag: '"12345"',
        ));

        $response = new Response();
        $response->setEtag('"54321"');
        $response->setLastModified(new \DateTimeImmutable('Fri, 23 Aug 2014 00:00:00 GMT'));
        $response->setExpires(new \DateTimeImmutable('Fri, 24 Aug 2014 00:00:00 GMT'));
        $response->setSharedMaxAge(30);
        $response->setMaxAge(30);
        $response->setVary(['foobaz']);

        $listener = new CacheAttributeListener();
        $responseEvent = new ResponseEvent($this->getKernel(), $request, HttpKernelInterface::MAIN_REQUEST, $response);
        $listener->onKernelResponse($responseEvent);

        $this->assertSame('"54321"', $response->getEtag());
        $this->assertEquals(new \DateTimeImmutable('Fri, 23 Aug 2014 00:00:00 GMT'), $response->getLastModified());
        $this->assertEquals(new \DateTimeImmutable('Fri, 24 Aug 2014 00:00:00 GMT'), $response->getExpires());