[Routing] Output IDN domains instead of punycode for UrlGeneratorInterface::ABSOLUTE_URL

[ThomasLandauer]

Description

I have an IDN domain (e.g. exämple.com) with nginx.

• When I put the punycode domain in nginx config (server_name xn--...), as recommended at http://nginx.org/en/docs/http/server_names.html#idn then $router->generate(..., ..., UrlGeneratorInterface::ABSOLUTE_URL); outputs the punycode url: ttps://xn--...
• When I put the IDN in nginx config (server_name exämple.com), then routing isn't working at all and I get the "Welcome to Symfony 7" page.

Internally, the router is using Request::getHost(), which uses PHP's $_SERVER['SERVER_NAME'].

So I'm suggesting to run absolute URL's through idn_to_ascii() by default, or add a flag for that. Nobody who has an IDN domain wants to show the punycode version to the users ;-)

Or am I missing something here?

Example

No response