Hi,
good news: you can easily handle this scenario with Kamailio!
If you want to have an overall view of VoIP&Push&Kamailio you can have a look at this speech I gave at Kamailio World 2015: https://www.youtube.com/watch?v=4XIrR9bwUkM.
And the slides: https://www.kamailio.org/events/2015-KamailioWorld/Day2/20-Federico.Cabiddu-Kamailio-In-A-Mobile-World.pdf.

Cheers,

Federico

On Fri, Jun 30, 2017 at 2:07 PM, Kjeld Flarup <kfc@viptel.dk> wrote:
Rumours is that Apple no longer accepts apps which can do persistent connections in the background.

To my best knowledge that means that IOS no longer supports SIP incoming calls.
The app should now use Push Notifications, but SIP does not support this.

Anybody faced this problem?

Is the solution to call an external program when processing an Invite? This leaves some issues.

1. Should we wait some seconds before proceeding or wait until the Push notification has been processed, to give the app time to register.
We cannot start to send invites, before we have a correct registration. An old registration may change ports when the app wakes up and makes a new register via NAT.

2. How do we know, if a given user should have a push notification?

3. Which information do we need to be able to send the push notification?

4. Does this give a penalty to Android users, because we have to wait for IOS?



--
Med venlig hilsen / Best regards
Kjeld Flarup (Christensen) M.Sc E.E, Teknisk chef
Viptel ApS, Hammershusvej 16C, DK-7400 Herning
Telefon: +45 46949949, Telefax: +45 46949950, http://viptel.dk


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