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Comment by JoelMcCracken

4 months ago

Funny enough, the first and last time I heard of sctp was in “Unix network programming”. It seemed so promising according to Stevens.

It did see a lot of use. I forgot to say, but the majority of 3G UMTS and 4G LTE radios (operator level and even down to tiny things like femtocells) required it to connect back to the $(core network) and encapsulated a mix of control and user data through it (though often also encapsulating SCTP in a VPN). That is to say, there were a lot of devices out there that used it in anger. If you made a call or used a cellular data session for over a decade, your traffic was likely getting encapsulated through it.

  • Interesting, thanks! I had no idea. It makes sense that it might be used in specific instances even if it’s not widely used on the internet generally.