[OpenSIPS-Users] raise event when a registered user is unreachable

[Bogdan-Andrei Iancu]

Do not take my explanation as a "no" - I just wanted to point the 
obstacles ; and work around the statefull part may be encoding some 
user/contact ID in the callid or from tag, so when you receive back the 
reply, you do not need a transaction to find out the corresponding 
contact you pinged - you can simply extract the contact from the 
reply.....just an idea.

Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com


On 03/14/2013 07:37 PM, Jayesh Nambiar wrote:
>
> Thank you for the solid explanation.
>
> --- Jayesh
>
> On Mar 14, 2013 10:37 PM, "Bogdan-Andrei Iancu" <bogdan at opensips.org 
> <mailto:bogdan at opensips.org>> wrote:
>
>     Hi Jayesh,
>
>     Firing an event is not a problem - the problem is in NAT pinging,
>     there is no state for the tractions. Basically the modules doing
>     NAT do not care of the replies (as for pining is not relevant), so
>     you do not know which ping and for what contact it failed, in
>     order to trigger the event.
>
>     Switching to statefull pinging may be expensive from resources
>     point of view....
>
>     Best regards,
>
>     Bogdan-Andrei Iancu
>     OpenSIPS Founder and Developer
>     http://www.opensips-solutions.com
>
>
>     On 03/13/2013 08:28 AM, Jayesh Nambiar wrote:
>>     Hi All,
>>     The 1.9 has an awesome event interface and I really appreciate
>>     the great work by the developers. I was looking at an option to
>>     raise an event when a registered user becomes unreachable.
>>     Say, for eg: I use keep-alive method as OPTIONS in the
>>     nat_traversal module and if I do not get a response from any UA,
>>     is it possible that opensips can raise an event for the same. Is
>>     it somehow possible from the script, or additional work on the
>>     code will be required.
>>     I think, this feature might be useful in many ways !!
>>
>>     Thanks for any pointers.
>>
>>     --- Jayesh
>>
>>
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>
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