[sr-dev] Proposal: New Dialog Module Design

[Ovidiu Sas]

On Sat, Mar 20, 2010 at 6:00 PM, Iñaki Baz Castillo <ibc at aliax.net> wrote:
> 2010/3/20 Ovidiu Sas <osas at voipembedded.com>:
>
>> For instance the qos module is keeping track of the media endpoints
>> for the dialog.
>> As I pointed out in a previous e-mail, in a spiral case when P2 is
>> proxying the media, the SDP for the first INVITE that is hitting P1
>> will be different then the SDP for the second INVITE that is hitting
>> P1 and in this case the single dialog approach will not work.
>>
>> UA1 --> P1 --> P2 --> P1 --> UA2
>
>
> Hi Ovidiu, let me a question:
>
> In your case, wouldn't be enought if the dialog is created after the
> spiral occurs?
How do you know that a spiral will occur?

> I mean, without creating it for the first time the INVITE arrives to
> the proxy (so just invoke dlg_manage() after the spiral).

If you have one single dialog for four media endpoints, how are you
going to manage them?
 - first INVITE: UAC + P2
 - second INVITE: P2 + UAS


Regards,
Ovidiu Sas