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From: Muttley@DastardlyHQ.org
Newsgroups: comp.unix.programmer
Subject: Re: Text based synchronous communication tool for Linux?
Date: Mon, 9 Dec 2024 08:25:22 -0000 (UTC)
Organization: A noiseless patient Spider
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On Sun, 8 Dec 2024 18:36:35 -0000 (UTC)
cross@spitfire.i.gajendra.net (Dan Cross) wibbled:
>works is brittle and doesn't work well over the modern Internet.
>In particular, it is de-facto limited to IPv4 and doesn't
>play well with firewalls: it involves sending the contents of a
>`sockaddr_in` across the network, and using that to set up a
>(direct) TCP connection between processes.  One could imagine

Huh? I don't get how that works. You need a connection in the first place to
send anything unless you use a broadcast UDP address. You can't just 
automagically set up a connection without the OS network layer playing its 
part.