[SR-Users] URI Mapping in Presence?

[Mark Boyce]

Hi Daniel

As always thanks for the quick response.  

I’ll have a dig through the presence module and try and see if my assumption on the usage of fields is correct. (watch presently_uri, send as to_user to watcher contact ).  If they do behave like that it should be a simple enough change to manage_subscribe

Thanks
Mark


> On 12 Feb 2020, at 20:21, Daniel-Constantin Mierla <miconda at gmail.com> wrote:
> 
> Hello,
> 
> the presence specs are quite rigid about user identities, in many cases
> the user id appears in sip headers as well as in the xml body. If you
> mangle identities for subscription, you may have to do changes in the
> content of the notifies.
> 
> I haven't analyzed in detail this case to be able to prose a solution,
> but you can try updating the headers and then use msg_apply_changes()
> before calling the handle_subscribe(). Or if you have some developer
> expertise, add the option to specify the presentity id via function
> parameter, right now it support given the watcher id as parameter. But
> then, again, you have to see if NOTIFY request need to be updated as well.
> 
> Cheers,
> Daniel
> 
> On 12.02.20 14:49, Mark Boyce wrote:
>> Hi All
>> 
>> Looking for the best way to achieve mapping from requested uri to actual uri in presence subscription.
>> 
>> The scenario I’ve been presented with is that there is a direct relation between extension number and sip user but they are not the same thing.
>> 
>> So for example;
>> 
>> Extension 10 is mapped to SIP user sip-SomethingLong
>> Extension 11 is mapped to SIP user sip-SomethingEvenLonger
>> 
>> When extension 10 subscribes to 11 we end up with something like this;
>> 
>> From: “Extension 10" <sip:sip-SomethingLong at ourpbx.com:5060>;tag=12345678
>> To: <sip:11 at ourpbx.com:5060>;tag=987654321-c8bd
>> 
>> I *think* what I need to end up with in presence db is;
>> presently_uri = sip:sip-SomethingEvenLonger at ourpbx.com
>> to_user = 10
>> 
>> (Is that right?)
>> 
>> However I can’t see a standard way to achieve this.  Manage_subscribe will let me override the watcher uri but not the watched.
>> 
>> 
>> Anyone see a simple way to achieve this?
>> 
>> Thanks
>> Mark
>> 
>> 
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> 
> -- 
> Daniel-Constantin Mierla -- www.asipto.com
> www.twitter.com/miconda -- www.linkedin.com/in/miconda
> Kamailio Advanced Training - March 9-11, 2020, Berlin - www.asipto.com
> Kamailio World Conference - April 27-29, 2020, in Berlin -- www.kamailioworld.com
> 

Mark
-- 
Mark Boyce
Dark Origins Ltd
e: mark at darkorigins.com <mailto:mark at darkorigins.com>
t: 0345 0043 043
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