On Sat, Dec 23, 2000 at 04:19:31PM -0800, David Schwartz wrote:
>
> > This means that keepalive is useless for keeping alive more than
> > one connection
> > to a given host.
>
> Actually, keepalive is useless for keeping connections alive anyway. It's
> very badly named. It's purpose is to detect dead peers, not keep peers
> alive.
Then what do you do when you are behind a NAT? And how do you expire entries in
ESTABLISHED state that could stay lingering forever without some sort of
keepalive? (The FINs might have been lost due to a conectivity transient, so
you can have another perfectly valid and alive connection with the same host,
and application-level timeouts are useless for some applications
(*cough*nc*cough*))
--
Cesar Eduardo Barros
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