On dino and conversations for example I can chat to myself on a chat to my own JID. As simple as that. On profanity I can not do /roster add , nothing gets added, although there’s no failure either. And I can’t do either /sub request , it gives the error:
Hey all I’m working on writing an XMPP client and just doing some casual research. What would you say makes a client better than others? Cross platform? Native/web client?
^ indeed this is cross-posted back to the same community it originated, because slrpnk.net was offline when the post was introduced and Lemmy is not advanced enough to sync caches with original communities.
Email is a non-starter for reasons such as not being in control over who the other party chooses as an email supplier (thus resulting in Microsoft being fed all email traffic).
RFC 6350 has a “Security Properties” section which only has a “KEY” field. Public keys tend to be huge; likely too big for a Vcard that will then be encoded as a QR code that needs to fit on a business card. Also too big for a Vcard that would be SMS-transmitted. And it does not take much to throw LaTeX’s QR code package out of bounds:
PieFed
ambitiousslab
poVoq
__反いじめ戦隊
Matty_r
Sunshine (she/her)
Coopr8
sunglocto
nicocool84
ZeroOne