Is it possible to use the accept-languages header to redirect to a locale instead of the config file?

[mathiasHillmann]

On the initial redirect of the url / currently the MultiLang middleware uses the first segment as the locale or uses the fallback in the config file as the locale. Would it be possible try to use the accept-languages header first instead of going to fall back right away?

Something like (Ps: this is untested code):

$acceptLanguages = explode(';', $request->header('accept-languages');
$locale = null;
foreach($acceptLanguages as $lang) {
    if(in_array($lang, array_keys(config('multilang.locales')))) {
        $locale = $lang;
        break;
    }
}
// More code that sets the locale segment on the url and whatnot using the locale above

Between lines 271 and 272 of Multilang.php would make this a possibility I think.

Of course this could make a Denial of Service attack possible if someone passes a really long accept-languages header, so there is a need to check its length of something like that, but I belive this is better than just using the default locale on the config file.