[Devel] Dialog module updating timeout value on PRACK

[Ron Winacott]

On Thursday 08 February 2007 12:57 pm, Ovidiu Sas wrote:
> Hi all,
>
> So ... what is the next step here?
>
>
The next step is do nothing. I found a workaround to the way the dialog module 
handles the setting of the default timeout value in the AVP and added that to 
the SST module. So the end result is the SST module and dialog module work 
that way I need them too.

ronw (karwin)

> Regards,
> Ovidiu Sas
>
> On 10/17/06, Bogdan-Andrei Iancu <bogdan at voice-system.ro> wrote:
> > Hi Ron,
> >
> > I guess the easiest way to go at the moment will be to have a way to
> > stop the PRACK to reset the timeout. I see to choices:
> >     1) define as module parameter a mask of methods to be ignore at
> > timeout update - is simple, fast but not so flexible
> >     2) if the avp timeout is set to value 0, ignore it - more flexible.
> >
> > regards,
> > bogdan
> >
> > Ron Winacott wrote:
> > >On Thursday 05 October 2006 2:17 pm, Dan Pascu wrote:
> > >>On Thursday 05 October 2006 20:58, Ron Winacott wrote:
> > >>>Bogdan,
> > >>>     With changes I am making to the SST module, I noticed that the
> > >>> dialog module is updating the timeout value on a PRACK in the
> > >>> dlg_onroute() callback. You ignore ACKs but you do not ignore PRACKs.
> > >>>  The fix is a
> > >>
> > >>PRACK as opposed to ACK is a method that has a reply. So if you do not
> > >>reset the timeout, and the transaction timeouts before the PRACK
> > >> answers comes back what will then happen with it?
> > >
> > >Good point, but the problem is the AVP I am using to set the dialog
> > > timeout value is tied to the transaction, not the dialog. So the AVP is
> > > not available after the INVITE/200 OK request/response when the PRACK
> > > is seen. So the PRACK over writes the set timeout value of the dialog
> > > with the default value. (killing any changes I have made at
> > > INVITE/200OK time via the dialog timeout AVP)
> > >
> > >So, ether I need PRACK to stop resetting the dialog timeout or I need
> > > the AVP to be bound to the dialog and not the transaction so the dialog
> > > module will "remember" my value and not use the default.
> > >
> > >As for your question about what will happen, is if the dialog times out
> > > in the middle of the PRACK/200OK transaction, then the dialog has timed
> > > out. In my case the Session Expire time has been reached and the PROXY
> > > is in its right to delete the dialog and free the resources because the
> > > session was not renewed with a reINVITE/UPDATE.
> > >
> > >Comments?
> > >
> > >Thanks,
> > >       ronw (karwin)
> >
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-- 
Ron Winacott - SOMA Networks, Inc.
---
Chaos, panic and disorder...my work here is done.