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From: Eric Abrahamsen <eric@ericabrahamsen.net>
Subject: Re: Constantly having to use `^' for server buffer to close then open server
Date: Thu, 01 Oct 2020 11:08:56 -0700
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Adam Sjøgren <asjo@koldfront.dk> writes:

> Eric writes:
>
>> I think this has been a perennial problem for all of us.
>
> Hm, I don't see this problem.
>
> I wonder if it is because I am network-wise close to the server
> (Denmark → Germany, I believe).
>
> Or because I've configured Gnus to check for news every 5 minutes when
> Emacs is idle (and I run an Emacs for Gnus only), so the connection is
> kept alive that way.

I would guess this is the answer. Kind of a manual, heavyweight
keepalive. My feeling is that, when the connection dies, I've usually
left it alone for ~10 minutes or more.