[SR-Users] notify takes several seconds to generate

Juha Heinanen jh at tutpro.com
Mon Dec 28 00:52:49 CET 2015

Juha Heinanen writes:

> i noticed that kamailio 4.3 presence server takes several seconds to
> generate notify when it receives subscribe request.

OK, found the reason. subs_db_mode=3 and notifier_processes=1 (default)
and waitn_time=5 (default) means that NOTIFY requests may be buffered
for 5 seconds.

so when UA quits and sends un-SUBSCRIBE, it will never get the final
NOTIFY, because by that time it has already un-registered itself and sip
proxy produces error message about it.  not good at all.

-- juha

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