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…

[imagem] 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 (previously nodename) is a label that is assigned to a device connected to a comp…

[imagem] 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?

[imagem] 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.

[imagem] 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

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Prepend https:// to Web Site in Profile Feature	2	128	11 de Setembro de 2025
User website validation doesn't allow IP addresses Feature	2	874	6 de Fevereiro de 2016

User website preference is invalid with underscore

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