Published at LXer:

ssh provides many features useful for client-server connections: Binary protocol, mandatory encryption, key pinning, multiplexing, compression (yes, it does that too).— Aren’t these the key features for why we invented HTTP/2?—Admittedly, SSH is missing some pieces. It’s lacking a notion of virtual hosts, or being able to serve different endpoints on different hostnames from a single IP address.— On the other hand, SSH does have several cool features over HTTP/2 though, like built-in client authentication which removes the need for registration and remembering extra passwords.

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I agree with the author. As a past user of telnet chat and a current user of IRC ssh can do most of the thinghs I want.
Sadly ssh is not in favour so, in a few years, somebody will "invent it" again and things will go on...

Huh. Good question, now that I've read it and thought about it. It's pretty great for the things described. I had previously been doing multiuser with websockets, but hmm...ssh...