[infogulch]

That's neat. Does it require 1 connection = 1 process to work? I don't see how you can have a long running server with this feature.

[xyzzy_plugh]

No, the init process hands over the listener FD allowing the server to accept() connections.

You can also do 1 connection = 1 process, though, but it's absolutely not required nor particular common these days.