Julia EvansJun 19, 2024

when I asked people to explain how UDP works I got a lot of answers to the effect of "it's spray and pray"

but I'm having trouble thinking of examples of UDP-based protocols that actually work in a "spray and pray" way —

* DNS is "send 1 packet, retry if you don't get a reply”
* QUIC is a sophisticated system for streaming data over UDP
* I'd guess that video protocols correct for packet loss
* maybe statsd is a "spray and pray” system?

(please do not reply to this explaining how UDP works)

Show threaddoragasuJun 19, 2024
@b0rk The thing is that protocols on top of UDP have to implement their own data correction / retry sytem because UDP doesn't. With TCP it would be dumb to do that, excepting maybe in very specific cases.
Show threadJulia EvansJun 19, 2024
@doragasu haha I was desperately trying to avoid this kind of reply explaining the basics of UDP with "(please do not reply to this explaining how UDP works)" but I guess it failed
Show threaddoragasu
@b0rk Ouch, sorry! 😓
Jun 19, 2024 at 2:11pmWeb