[ftigeot]

Relevant Operating System community news here: https://news.ycombinator.com/item?id=9797932

SCTP support has just been removed from DragonFly. The code had been present for 15 years (inherited from FreeBSD) and in these 15 years there wasn't even a single known user.

If there really are people using it it's effectively in a very very small niche and they will have to do everything themselves. There is no way generic operating system developers can work on this protocol.

[acdha]

The only way I see this cycle changing is if someone ships a real application which uses SCTP to provide significant benefits to users. If deploying SCTP improved performance or reliability for video-chat, a popular game, etc. there'd be a more compelling reason to go to e.g. Cisco, NetGear, etc. and ask them to ship kernel-level code with likely security impact to everything they sell.

WebRTC is the most obvious candidate for this but maybe one of the HTTP2-over-SCTP experiments will go well enough that someone will ship it in a real browser and start the process of saying “Web users get n% performance improvements if SCTP is implemented”. That certainly seems like a rather long game to play, however.