Hi Pascal,

I don't know why would that happen. I keep testing it and didn't see 
this case..
Can you please raise the debug level and if you see it send me the part 
of the log corresponding to the processing of the Subscribe and 
generation of Notify.

Regards,
Anca

Pascal Maugeri wrote:
> Hi
>
> After re-subscribing to a user presence, we receive immediately a 
> NOTIFY with no content:
>
> NOTIFY sip:us...@xx.xx.xx.xx:5060 SIP/2.0
> Via: SIP/2.0/UDP YY.YY.YY.YY:6667;branch=z9hG4bK34ab.7700bc14.0
> To: <sip:us...@mycompany.com 
> <mailto:sip%3aus...@mycompany.com>>;tag=14257163
> From: <sip:us...@mycompany.com 
> <mailto:sip%3aus...@mycompany.com>>;tag=9886f112d485ff608a79084eaa27a247-48fb
> CSeq: 5 NOTIFY
> Call-ID: 87cbad243e9c1b48c8333cbbb99cb...@xx.xx.xx.xx
> Route: <sip:YY.YY.YY.YY:6666;lr=on>
> Content-Length: 0
> User-Agent: OpenSIPS (1.5.2-notls (x86_64/linux))
> Max-Forwards: 70
> Event: presence
> Contact: <sip:s...@yy.yy.yy.yy:6667>
> Subscription-State: active;expires=100
>
>  and then few seconds later I receive a NOTIFY with the proper 
> presence document.
>
> Which are the possible reasons why the presence server sends an 
> "empty" NOTIFY ?
>
> Cheers
> Pascal
> ------------------------------------------------------------------------
>
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