Thanks for the quick response.
It's with a particular windows client that uses jabber of server1 to 
communicate with a service in server2 which also uses jabber.
I'll checkout the XEP-0198... By the way We're using jabber 1.4 in the servers 
and centos4.

On Wed, Mar 21, 2012 at 5:50 PM, <d...@cridland.net> wrote:
I think you might see this if there's no XEP-0198 between servers and the old 
TCP session is still present on server2.

The presence response would go down this dead session, then it'd be detected as 
dead (TCP RST from server1), but typically the presence won't be resent, as 
it'll have been lost on the wire.

The solution is basically XEP-0198 on S2S links - you don't even need to do 
session resumption for it to be a substantial improvement here.


Sent from my android device.



-----Original Message-----
From: Kevin Smith <ke...@kismith.co.uk>
To: Jabber/XMPP software development list <jdev@jabber.org>
Sent: Wed, 21 Mar 2012 9:20 
Subject: Re: [jdev] Problem receiving presence after power outag

On Wed, Mar 21, 2012 at 9:12 AM, Mark Gabriel Paylaga 
<mpayl...@gmail.com> wrote: 
> Hello, 
> 
> Has anyone tried this before? : 
> 
> 1.)  Server1 receives presence from Server2. 
> 
> 2.)  Power off Server1 (meaning no graceful exit, jabber still running and 
> other services then literally just switch off the server or unplug it). 
> 
> 3.)  Restart Server1 (start all services including jabber). 
> 
> Result:  Server1 does not receive Server2's presence. 
> Solution: Restart services in Server2.  Server1 will receive the presence. 
> 
> Is this because Server2 is still holding on to the old jabber session ID or 
> something? 

This shouldn't happen. When Server1 comes back online, it'll signal 
that it wants presence for the newly online user@server1, and server2 
should be willing to provide it (subject to subscription states being 
right, etc.). 

Is this a  general problem you see, or with specific services? 

/K 
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