Download large files

[ammannbe]

When I try to download large files (50MB or greater) I get following error:

Allowed memory size of 134217728 bytes exhausted (tried to allocate 765055744 bytes) {"userId":14,"exception":"[object] (Symfony\\Component\\Debug\\Exception\\FatalErrorException(code: 1): Allowed memory size of 134217728 bytes exhausted (tried to allocate 765055744 bytes) at /my-project/vendor/monicahq/laravel-sabre/src/Sabre/Server.php:87)
[stacktrace]
#0 /my-project/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(148): Symfony\\Component\\Debug\\Exception\\FatalErrorException->__construct()
#1 /my-project/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(134): Illuminate\\Foundation\\Bootstrap\\HandleExceptions->fatalExceptionFromError()
#2 /my-project/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(0): Illuminate\\Foundation\\Bootstrap\\HandleExceptions->handleShutdown()
#3 /my-project/vendor/monicahq/laravel-sabre/src/Sabre/Server.php(87): stream_get_contents()
#4 /my-project/vendor/symfony/http-foundation/StreamedResponse.php(114): LaravelSabre\\Sabre\\Server->LaravelSabre\\Sabre\\{closure:/my-project/vendor/monicahq/laravel-sabre/src/Sabre/Server.php:85-91}()
#5 /my-project/vendor/symfony/http-foundation/Response.php(376): Symfony\\Component\\HttpFoundation\\StreamedResponse->sendContent()
#6 /my-project/public/index.php(58): Symfony\\Component\\HttpFoundation\\StreamedResponse->send()
#7 /my-project/server.php(21): ()
#8 /my-project/server.php(0): {main}()
#9 {main}
"}

If I replace the lines vendor/monicahq/laravel-sabre/src/Sabre/Server.php:85-91 to:

if (ob_get_level()) ob_end_clean();
return response()->stream(function () use ($body) {
    fpassthru($body);
}, $status, $headers);

it works perfectly.

So my qustions are:

• Is it possible to change the response as I did or does this break functionality?
• Isn't it possible to fully delegate Sabre/DAV the responses?

Note: I want to support files up to 10GB, so just to increase the memory_limit, I think, isn't a good idea.