can I provide invalid HTTPS values for testing?

[Stephane Bortzmeyer]

On Thu, Jun 20, 2024 at 02:29:13PM +0100,
 Stephen Farrell <stephen.farrell at cs.tcd.ie> wrote 
 a message of 100 lines which said:

> Actually, it may well be that bind allows me sufficient leeway to do
> most of the tests I want, so this is just to check that there's no
> imminent plan to have bind disallow the kind of rubbish HTTPS RRs
> below.

A related issue: does anyone know a software / service which tests
HTTPS records and actually connects to the HTTPS server to see if it
indeed supports what it claims to support. (Testing all ALPNs, all IP
hints, etc.)

"Error, HTTP record says alpn=h3 but HTTP/3 setup failed"

Bonus if I can integrate it in Nagios/Icinga/Zabbix/etc.