A user on our forums is getting the error “Website is invalid.” when attempting to enter his website on his profile. The url he is using is: code_man.cybnet.ch Perhaps the underscore in the sub-domain is triggering the error? The version of Discourse that we are currently using is: 1.5.0.beta14 I…

[imagen] dGr8LookinSparky: Perhaps the underscore in the sub-domain is triggering the error? That’s it. Underscores are not valid characters for hostnames. Hostname In computer networking, a hostname (archaically nodename) is a label that is assigned to a device connected to a com…

[imagen] pfaffman: Underscores are not valid characters for hostnames. But the url works. Perhaps this validation could be overridden by admins if they entered the url?

[imagen] dGr8LookinSparky: Perhaps this validation could be overridden by admins if they entered the url? Introduce complexity on the URL validation to let some people who wants a invalid domain on their profile? I don’t think this is a good idea.

[imagen] dGr8LookinSparky: But the url works. Well, if that were entirely true, we wouldn’t be having this conversation. :slight_smile: [rook] The use of the underscore in host names android, dns asked by rook on 09:12AM - 09 Jun 12 UTC …

And what about IDNs? The regular expression validating the website url is so strict that I can’t fit in my perfectly valid URL https://ondřej.caletka.cz Even using Punycode form of https://ondřej.caletka.cz is not accepted, even though it is perfectly valid here in this very forum post.

User website preference is invalid with underscore

Soporte

Tema		Respuestas	Vistas
URL validation for "Web Site" on user profile Feature	5	1545	5 Febrero 2016
Photography Domain Invalid as Website on Profile Support	21	2005	9 Febrero 2024
User Preference 'Website' does not allow new TLDs Bug	14	2941	2 Agosto 2017
Prepend https:// to Web Site in Profile Feature	2	107	11 Septiembre 2025
User website validation doesn't allow IP addresses Feature	2	856	6 Febrero 2016

User website preference is invalid with underscore

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