[Kamailio-Users] call keepalived using rtimer?

[Iñaki Baz Castillo]

El Jueves, 19 de Febrero de 2009, Alex Hermann escribió:
> On Wednesday 18 February 2009 16:47:36 Ovidiu Sas wrote:
> > The issue here is that if you send in-dialog requests from a proxy,
> > you break the CSeq for all the subsequent in-dialog requests sent by
> > endpoints.
>
> Isn't the whole point of the dialog module that it keeps track of the
> dialog state (including the CSeq)?. It could increase/replace it in passing
> requests when necessary.

It's not so easy. dialog module just takes in account one dialog while an 
INVITE would generate various early-dialogs.
In one of those early-dialog there could be an in-dialog request (INFO, 
PRACK...) so the CSeq must be incremeted *just* for that early dialog.
This would totally fail with the current dialog module implementation.

Also, if there is a PRACK the proxy should also handle the RSeq header.

In conclusion, a proxy CANNOT generate in-dialog requests safely. It could 
work just in a few escenarios.



-- 
Iñaki Baz Castillo