Streaming file response

FilesystemAdapter.php

    public function response($path, $name = null, array $headers = [], $disposition = 'inline')
    {
        $response = new StreamedResponse;

        $filename = $name ?? basename($path);

        $disposition = $response->headers->makeDisposition(
            $disposition, $filename, $this->fallbackName($filename)
        );

        $response->headers->replace($headers + [
            'Content-Type' => $this->mimeType($path),
            'Content-Length' => $this->size($path),
            'Content-Disposition' => $disposition,
        ]);

        $response->setCallback(function () use ($path) {
            $stream = $this->readStream($path);
            fpassthru($stream);
            fclose($stream);
        });

        return $response;
    }