Hello,

I'd like to explain my scenario and the module I'd like to develop. I am hoping for comments whether there are already modules like that or which modules' API I could use to make the development easier.

Scenario:

I have two domains (A and B) with a Kamailio server in each of them configured as presence servers. The agents from both domains want to subscribe to few resources from domain A.

Idea:

In order to reduce traffic between the domains, the presence server from domain B shall handle the subscriptions internally and use an internal virtual presence-user-agent to subscribe to the resources in domain A.

SIP Messages:

Subscription:

1) Subscribe resource.domain.a, from each user agent ua_n.domain.b

2) 202 OK from kamailio.domain.b

3) If not already subscribed, Subscribe resource.domain.a from kamailio.domain.b with virtual user-agent

4) 202 OK from kamailio.domain.a

(Repeat for each subscriber)

(Subscription has to be refreshed by an internal timer)

Events:

1) Publish resource.domain.a to kamailio.domain.a

2) 200 OK from kamailio.domain.a

3) Notify resource.domain.a to kamailio.domain.b

4) 200 OK from kamailio.domain.b

5) Notify resource.domain.a to each user agent ua_n.domain.b

6) 200 OK from each ua_n.domain.b

(Internally, Kamailio of domain B has to forward the incoming Notify to all locally subscribed user-agents)

I tried using the PUA module but it does not fit all my needs. Now I think I will have to develop my own module in order to achieve everything. Any ideas?

Kind regards

Jan Gaida

PS: Sorry for mailing to both mail-lists. But I was not sure which list was the correct for this topic.


Jan Gaida Ingeniero Desarrollo Software

C/ Marconi 3 (PTM) 28760 Tres Cantos Spain jan.gaida@grupoamper.com \| www.grupoamper.com

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