[OpenSER-Users] No NOTIFY after presence unsubscription

[Michel de Boer]

Hi,

I just checked out the sources from the trunk.
And the presence module does not seem to work anymore :(

On the SUBSCRIBE (Event header set to "presence") I send, I get a 489
Bad Event response.
The SUBSCRIBE is exactly the same as the SUBSCRIBE I used with
version 1.2.1. There it worked.

Furthermore, the 489 reponse is malformed. The mandatory
Allow-Events header is missing.

This is what I see in the error logging:

 7(16680) parse_headers: flags=ffffffffffffffff
 7(16680) PRESENCE: handle_subscribe:Missing or unsupported event header
field value

Regards,
Michel

Anca-Maria Vamanu wrote:
> Hello,
> 
> Indeed the module did not sent Notify messages when unsubscribing. It
> did, however, sent them when an initial Subscribe with expires 0 was
> received. I have fixed that in the latest commit.
> Thanks for reporting.
> 
> Best regards,
> 
> Anca Vamanu
> 
> Michel de Boer wrote:
> 
>> Hi,
>>
>> I am currently experimenting with the presence module (openser v1.2.1).
>> It seems to work really fine. I only encountered a small problem.
>>
>> When my client unsubscribes from the presence event by sending a
>> SUBSCRIBE request with expires=0, then openser responds with a 200 OK.
>> After the 200 OK, I expect to receive a NOTIFY message, but openser
>> never sends this NOTIFY. It is this NOTIFY that should terminate
>> the subscription dialog through its Subscription-State header
>> set to "terminated".
>>
>> RFC 3856 states this:
>>
>>   The subscriber can terminate the subscription by sending a SUBSCRIBE,
>>   within the dialog, with an Expires header field (which indicates
>>   duration of the subscription) value of zero.  This causes an
>>   immediate termination of the subscription.  A NOTIFY request is then
>>   generated by the presence agent with the most recent state.
>>
>> This behavior is based on the general requirements for event handling
>> as defined in RFC 3265.
>>
>> Is this a bug or is there some configuration stuff that enables/disables
>> the NOTIFY for a SUBSCRIBE with epxpires=0.
>>
>> A SUBSCRIBE with expires=0 can also arrive as the initial and final
>> SUBSCRIBE for a subscription. In that case it will be fetching
>> the presence information only once. Without the NOTIFY, a fetch
>> does not work.
>>
>> Cheers,
>> Michel
>>
>>  
>>
> 
> 
> 

-- 
Michel de Boer
www.twinklephone.com