Regex CORs

[hmajid2301]

Is your feature request related to a problem? Please describe.

Would it be possible to add regex CORs as an option, so we can support wildcard domains ?

Describe the solution you'd like

Perhaps you could specify another argument, something like so ?

socketio.AsyncServer(async_mode="asgi", regex_cors_allowed_origins=["http://localhost*:3000"])

Describe alternatives you've considered

Logs

Additional context

[miguelgrinberg]

The CORS specification does not support origins given as regular expressions.

[hmajid2301]

Yeh sure, I know its not the same but FastAPI have their own implementation to support RegexCORs is there any appetite for this ? Or is there another way I can support wildcard domains.

Thanks

[miguelgrinberg]

How about this. Let's say the cors_allowed_origins option is extended to support a callable in addition to a string. When using this option, your function will be called to decide if an origin is allowed or not. Inside your function you can use anything you want to determine if you allow the origin, including a regex match.

[hmajid2301]

yeh that sounds like a nice elegant "workaround". Thanks Miguel