In article <6AAF06E9-5BA9-428C-978B-73326A745C26@nic.br> you write:
But neither the available capacity or the usage warning would solve the usual issue programmers have with DNS is that DNS is considered slow. That was said to be the main reason for browsers not supporting DANE (DNSSEC-based certificates), so this might be hard to overcome.
If speed is an issue, it should be possible to do asynchronously, e.e., linkify in grey and do the DNS check, then change the color when the DNS answer comes back. In a lot of cases the answer will be in the local DNS cache so it'll be pretty quick. In systems like Slack, if you enter a URL, it fetches the page and decorates the URL with info about whatever the URL points to. People seem to be used to that. R's, John
On 8 Jul 2020, at 19:44, Edmon <edmon@registry.asia> wrote:
Perhaps we can say that before linkification automagically happens, a DNS lookup should be done to confirm that the domain exists? Or would that unnecessarily burden the DNS? Modern instant messengers do try to grab the web information too in fact when something gets linkified.