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Only because no one wants to upgrade their damn backbone NICS. SCTP solved things way better than QUIC imo except for the infrastructure inertia part.

The infrastructure inertia part isn't even so much a question of technical infeasibility, but greed. So much spending was slotted to carriers to improve their networks, but instead of investing in capacity and protocol upgrades, it all went to lobbying/exec bonuses.

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SCTP runs over UDP too. The main reason for not picking it is likely the TLS handshake optimizations they wanted.

It does not run on UDP. It provides a UDP like best-effort transmission mode though, while also optionally allowing for interweaving reliable connection features.

If SCTP really ran on UDP. I'd have no reason to be salty, because we'd already be using it.

RFC 6951. It can run over UDP if you want it to, with a clear guide for how to do it.

> I'd have no reason to be salty, because we'd already be using it.

Direct OS support is a big deal, and UDP gets messed with too. If someone made SCTP-over-UDP the default mode, while changing nothing else, I don't think it would affect adoption at all.

Nope, SCTP runs at the same layer as UDP.

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