TYPO3 - Extbase stream file from resourceStorage using streamFile PSR-7 Response

gistfile1.txt

    public function downloadAction()
    {
        $storage = $this->resourceFactory->getDefaultStorage();
        $file = $storage->getFile('test.jpg');
        $response = $storage->streamFile($file, true, 'test-filename.jpg');
        $this->sendResponse($response);
        exit();
    }

    protected function sendResponse($response)
    {
        if (!headers_sent()) {
            if (http_response_code() === 200) {
                header('HTTP/' . $response->getProtocolVersion() . ' ' . $response->getStatusCode() . ' ' . $response->getReasonPhrase());
            }

            foreach ($response->getHeaders() as $name => $values) {
                header($name . ': ' . implode(', ', $values));
            }
        }
        $body = $response->getBody();
        echo $body->__toString();
    }

Nice one!! I didn't know about \TYPO3\CMS\Core\Resource\ResourceStorage::streamFile().