[noselasd]

You're likely interacting with SCTP every time you use a mobile phone, as it's in heavy use in the control plane of telecom networks. Outside that, not so much though.

[monocasa]

Also every Zoom/Google Meet call. WebRTC is on top of SCTP.

[Jasper_]

WebRTC uses SCTP in a weird way: on top of DTLS, which is itself on top of UDP. When most people talk about using SCTP, they mean using it instead of UDP.

[rezonant]

Sort of. SCTP is used for data channels, the audio/video is RTP. Still an important piece though.

[ithkuil]

Yes but if my program on my laptop wants to talk to my program in my server somewhere out there, chances are the SCTP will be blocked by some piece of blinking furniture along the path.

[cryptonector]

> Outside that, not so much though.

Thanks for making my point.