On Tue, 27 Jun 2006, Joe Hildebrand wrote:
Date: Tue, 27 Jun 2006 05:59:54 -0600
From: Joe Hildebrand <[EMAIL PROTECTED]>
Reply-To: Jabber software development list <jdev@jabber.org>
To: Jabber software development list <jdev@jabber.org>
Subject: Re: [jdev] XMPP Ping/Keepalive: Recommended method ?
On Jun 27, 2006, at 4:09 AM, Bruce Campbell wrote:
Well, not really. You'll get a TCP ack back, which should be enough to
keep the lights on.
Not if you are dealing with inspection-type firewalls which don't really
treat a TCP ACK as a data packet.
If firewalls did this, TCP would *break* for all applications. Can you
please give a concrete example of a firewall that has this property?
Not a firewall appliance, but 'interesting' configurations with ISPs
seeking to keep their dial-up lines/wavelan channels free (timers on their
end were only reset on certain types of packets, which did not include tcp
acks).
--
Bruce Campbell
