From: Paul Eggert <eggert@cs.ucla.edu>
To: emacs-devel@gnu.org
Subject: Re: Determining whether a TCP connection is up
Date: Sat, 03 Aug 2013 07:09:47 -0700 [thread overview]
Message-ID: <51FD0F2B.5060605@cs.ucla.edu> (raw)
In-Reply-To: <m3y58j7y8m.fsf@stories.gnus.org>
On 08/03/2013 05:30 AM, Lars Magne Ingebrigtsen wrote:
> Is there a general TCP way
> to probe for a connection? Can we (for instance) send a TCP KEEPALIVE
> once and see whether we get anything back within (say) a second?
I'm afraid not, since TCP keepalives won't work through proxies.
See, for example, the first FAQ in
http://www.proftpd.org/docs/howto/KeepAlives.html
next prev parent reply other threads:[~2013-08-03 14:09 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-03 12:30 Determining whether a TCP connection is up Lars Magne Ingebrigtsen
2013-08-03 14:09 ` Paul Eggert [this message]
2013-08-03 16:01 ` Julien Danjou
2013-08-05 2:12 ` Lars Magne Ingebrigtsen
2013-08-05 2:33 ` chad
2013-08-05 2:37 ` Lars Magne Ingebrigtsen
2013-08-05 10:34 ` Julien Danjou
2013-08-05 14:40 ` Stefan Monnier
2013-08-05 15:23 ` Thierry Volpiatto
2013-08-05 15:51 ` Julien Danjou
2013-08-05 17:55 ` Lars Magne Ingebrigtsen
2013-08-06 8:51 ` Julien Danjou
2013-08-06 9:59 ` joakim
2013-08-06 13:36 ` Lars Magne Ingebrigtsen
2013-08-06 21:32 ` Stefan Monnier
2013-08-12 17:09 ` Lars Magne Ingebrigtsen
2013-08-13 1:52 ` Stefan Monnier
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