[Kamailio-Users] Presence_Dialoginfo versioning

[Klaus Darilion]

Without reading the RFC I suspect the version to be increased within the 
subscription. So, if there is a NEW subscription, the version will be 
reset. If it is a re-subscription (to keep the current subscription 
alive) the version will not be reset.

So, how to differ between NEW and RE-subscription? If the SUBSCRIBE 
contains a to-tag, then it is a RE-subscription. If there is no to-tag, 
than it is a new subscription.

regards
klaus


kamailio.org at spam.lublink.net wrote:
> Hey,
> 
> I have noticed that the XML body of the dialog messages contains a 
> version attribute. The server is counting the versions using the latest 
> subscription as a reference point, and the phone is counting the 
> versions from the first subscription ( at reboot ).
> 
> Which is the correct way to count these versions?
> 
> Consider :
> 
> 10:00 Subscription
> 10:05 Notification version 1
> 10:35 Notification version 2
> 11:01 Subscription
> 11:05 Notification version X
> 
> Is X = 3 because it is the third notification or 1 because it is the 
> first after the last subscription? If it's version 1, it could confuse 
> the phone cause a notification that is sent at the same time as the 
> notification would have a confusing version.
> 
> On the other hand, each subscription, has it's own versioning, so would 
> it not logically follow that the different subscriptions for the same 
> device have seperate versioning?
> 
>  From my phone : BLF Notify received for line: 3 has older version: 3 
> last version:135
> 
> To confirm my theory, I redialed the number 133 times, and once the 
> version number had run up to 136, the lights started flashing again.
> 
> Is this a bug in Grandstream, Kamailio, or perhaps an RFC which was 
> unclear?
> 
> Thanks,
> 
> David
> 
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