Re: Question regarding processing of "subscribe" in nist-sip-presence-proxy

Lionel,

No that is not the standard. Its not defined in the standard in fact. We 
just took short cuts. Would you like to evolve it to be a true presence 
/  proxy server ? It would be a good project to work on. Lots of things 
need to be done there. Do you have developer access to the project?

Regards

Ranga

 MALLET Lionel wrote:

> Hello,
>  
> <disclaimer>
> I'm quite new to this list so I may be asking questions that have 
> already been asked a while ago. Please forgive me if I do so.
> </disclaimer>
>  
> I have a question regarding the way the subscribe request are 
> processed in the nist-sip-presence-proxy. The comment in the source 
> code (PresenceServer.java:processSubscribeRequest(SipProvider 
> sipProvider, Request request, ServerTransaction serverTransaction)) 
> states that:
>  
>      * <h3>Policy for forwarding subscriptions.</h3> <ol>
>      *   <li>If the Notifier is registered and is publishing, the 
> subscritption
>      *       ends here. WatcherInfo is updated and PS sends notifies 
> to subscriber
>      *       according to authorization. Note, the default process 
> should be that
>      *       the notifiers are all registered from the 
> registrations.xml file, so
>      *       they don't have to be online.</li>
>      *   <li>If the notifier is registered, but the subscriber 
> requires some non-pidf
>      *       notification format (such as Windows Messengers xpidf) or 
> has other
>      *       special requirements that the PS can't understand, the 
> subscription is
>      *       forwarded statelessly to notifyer.</li>
>      *   <li>If user is not registered, but the domain indicates that 
> we are
>      *       responsible for him, a 404 is sent (by Proxy)</li>
>      *  </ol>
> What I'm concerned about is the processing when the user is not 
> registered (yet) to the proxy. Is this a design choice not to store 
> the notifier or is this defined by some standard? Why not storing the 
> notifier so that when it becomes registered on the proxy the 
> subscriber is notified immediately? It seems a lot easier than having 
> to store all users in our domain in the registrations.xml file.
>  
> I'm asking this question before contributing any source code to 
> implement this behavior.
>  
> BTW I've also updated the source code to remove the Java deprecation 
> warnings and I will be glad to contribute this code as well.
>  
> Best regards,
> ------------------------------------------------------------------------
>
>     *Lionel Mallet/ - Gemalto/*
>     Tel: +33 (0)4 42 36 59 70
>
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>
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-- 
M. Ranganathan 

Advanced Networking Technologies Division,
National Institute of Standards and Technology (NIST),
100 Bureau Drive, Stop 8920, Gaithersburg, MD 20899. 
tel:301 975 3664 , fax:301 590 0932 http://w3.antd.nist.gov/
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