Greetings.
I try to make iOS voip application with presence information. iOS does not let too frequent network updates from server side when runs in background mode. So I cannot rely on plain PUBLISH / SUBSCRIBE scheme - it leads to restart of application by iOS in many cases.
Please see this post for details: https://devforums.apple.com/message/565667#565667
The question. Can Kamailio provide way to reduce the number of NOTIFYs?
I see it as 1) iOS application creates & uploads RLS via XCAP 2) iOS application asks server about changes in presence information once per 10 minutes or when application goes to foreground state. The best way is to receive single batch'd NOTIFY answer for all watched peers.
Is it possible to implement with kamailio?
Thank you :)
Hi,
The correct way to do something like this is with a polled subscription. Instead of sending a normal, dialog-forming, SUBSCRIBE from the client you send a single, out-of-dialog, SUBSCRIBE with an expires value of 0. The server should then send a single NOTIFY containing the full set of presence information without creating a dialog (so no further NOTIFYs).
You can send these SUBCRIBEs at whatever frequency you require.
Unfortunately, Kamailio does not currently support polled subscriptions.
Regards,
Peter
On 6 Oct 2012, at 10:16, Dmytro Bogovych dmytro.bogovych@gmail.com wrote:
It is interest, thank you!
I can set expire time to 10 seconds. If kamailio will be stable with it and RLS - it is acceptable workaround for now.
On Sat, Oct 6, 2012 at 9:11 PM, Peter Dunkley peter.dunkley@crocodile-rcs.com wrote:
-
Dmytro Bogovych -
Peter Dunkley