[SR-Users] iOS CallKit and tsilo

Igor Olhovskiy igorolhovskiy at gmail.com
Wed Mar 10 19:12:18 CET 2021


Hi!

But there would be a connection after app will wake up.

Wake up -> REGISTER -> Connection.

And after this it's about a time to send to app any info on canceled or 
already answered calls.

Regards,
Igor

On 10.03.2021 18:18, Jurijs Ivolga wrote:
> Hi,
>
> If you look into this:
>
> https://developer.apple.com/documentation/pushkit/responding_to_voip_notifications_from_pushkit 
> <https://developer.apple.com/documentation/pushkit/responding_to_voip_notifications_from_pushkit>
>
> Full quote:
>
>     After sending the initial push notification, don’t send additional
>     push notifications to cancel the call or communicate new details
>     to your app. Instead, communicate with the app directly over the
>     network connection you established between it and your server.
>     Using an existing network connection is generally faster than
>     sending a push notification, and if network conditions are poor,
>     APNs may be unable to deliver push notifications to the device
>     anyway.
>
>
> So based on my interpretation of what is written above, it seems they 
> do not prohibit, but rather recommend it because of " Using an 
> existing network connection is generally faster ". As far as we are 
> discussing a case where there are no existing connections, I 
> personally think this part of documentation is not relevant to that 
> particular case.
>
> Jurijs
>
>
> On Wed, Mar 10, 2021 at 6:36 PM Igor Olhovskiy 
> <igorolhovskiy at gmail.com <mailto:igorolhovskiy at gmail.com>> wrote:
>
>     Hi,
>
>     But Apple prohibits to use 2nd push for call cancel. That's not my
>     decision.
>
>     https://developer.apple.com/documentation/pushkit/responding_to_voip_notifications_from_pushkit
>     <https://developer.apple.com/documentation/pushkit/responding_to_voip_notifications_from_pushkit>
>
>>     After sending the initial push notification, don’t send
>>     additional push notifications to cancel the call or communicate
>>     new details to your app. Instead, communicate with the app
>>     directly over the network connection you established between it
>>     and your server.
>
>     Regards,
>     Igor
>
>     On 10.03.2021 15:18, Jurijs Ivolga wrote:
>>     Hi,
>>
>>     My point is that you're referring to documentation where it is
>>     assumed that there is always connection between iOS app and
>>     Kamailio, but this might not be the case, like in the scenario
>>     that I described.
>>
>>     I think somebody who put this documentation is not really aware
>>     of all use cases and for this case it is better to use push for
>>     cancelling a call, IMHO.
>>
>>     Jurijs
>>
>>
>>     On Wed, Mar 10, 2021 at 4:15 PM Igor Olhovskiy
>>     <igorolhovskiy at gmail.com <mailto:igorolhovskiy at gmail.com>> wrote:
>>
>>         Hi!
>>
>>         That is exactly my question. Now I have workaround for this
>>         (https://samael28.blogspot.com/2021/03/kamailio-and-delayed-cancel-on-ios.html
>>         <https://samael28.blogspot.com/2021/03/kamailio-and-delayed-cancel-on-ios.html>)
>>         but maybe there is more efficient way, like "storing" dead
>>         transactions.
>>
>>         Regards,
>>         Igor
>>
>>         On 10.03.2021 15:07, Jurijs Ivolga wrote:
>>>         Hi,
>>>
>>>         So if there is no connection between iOS app and Kamailio,
>>>         what should we do? Lets imagine scenario: call arrives, app
>>>         receives push notifications and then call is cancelled, even
>>>         before connection is established.
>>>
>>>         Jurijs
>>>
>>>
>>>         On Wed, Mar 10, 2021 at 4:04 PM Igor Olhovskiy
>>>         <igorolhovskiy at gmail.com <mailto:igorolhovskiy at gmail.com>>
>>>         wrote:
>>>
>>>             Hello,
>>>
>>>             As I got, this is should be supported by app itself, not
>>>             iOS.
>>>
>>>             And Apple docs says explicitly:
>>>
>>>>             After sending the initial push notification, don’t send
>>>>             additional push notifications to cancel the call or
>>>>             communicate new details to your app. Instead,
>>>>             communicate with the app directly over the network
>>>>             connection you established between it and your server.
>>>
>>>             Regards,
>>>             Igor
>>>
>>>             On 10.03.2021 13:52, Ilie Soltanici wrote:
>>>>             Hello,
>>>>
>>>>             On Cancel we are sending just another Push Notification
>>>>             that indicates the call is cancelled, and the calling
>>>>             screen dissapear.
>>>>
>>>>             Regards,
>>>>
>>>>             On Wed 10 Mar 2021 at 12:28, Igor Olhovskiy
>>>>             <igorolhovskiy at gmail.com
>>>>             <mailto:igorolhovskiy at gmail.com>> wrote:
>>>>
>>>>                 Hello!
>>>>
>>>>                 Is there any way to "store" already finished
>>>>                 transactions in tsilo? Idea
>>>>                 is to deliver, for example, canceled calls to the
>>>>                 phone, when call
>>>>                 already was answered on other device, but push
>>>>                 notification arrive
>>>>                 later? Major problem here, that there how it's
>>>>                 working on iOS.
>>>>
>>>>                 On iOS phone first show you calling screen, than -
>>>>                 app is waking and
>>>>                 after app will register and receive invite with
>>>>                 tsilo, it updates
>>>>                 calling screen with CallerID and other info. But if
>>>>                 call was canceled
>>>>                 before, calling screen is shown, but app not
>>>>                 receiving INVITE, so, call
>>>>                 screen is just there for some timeout (for
>>>>                 Linphone, for ex, it's 20 sec).
>>>>
>>>>                 Right now I've manage to do it via external SIPP
>>>>                 call, that emulates
>>>>                 "fake missed call", but maybe there is other way to
>>>>                 "store" already dead
>>>>                 transactions for some time?
>>>>
>>>>                 PS: Unfortunately, can't solve this on mobile app
>>>>                 level.
>>>>
>>>>                 -- 
>>>>                 Regards,
>>>>                 Igor
>>>>
>>>>
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