[sr-dev] [dialog MI dlg_end_dlg] error when terminating a dialog in state 2 (never removed from memory)

[Timo Reimann]

Heya,


Iñaki Baz Castillo wrote:
>> (2) always decrement the reference counter during BYE response handling.
> 
> So, never rely on the response to the BYE and never expect that the
> BYE would get a response, am I right?

Yes.


> If so I fully agree. A BYE initiated by the proxy shoud always work
> except in case it's sent at the same time as an in-dialog request by
> an endpoint, so the CSeq of the BYE could be too small. In order to
> prevent it, the BYE generated by the proxy should ensure that its CSeq
> value is 5-10 times greater than the last CSeq value in the dialog
> (for each side). And when the BYE is sent then update the dialog
> status without waiting for the response, do you agree?

I didn't consider the case where an in-dialog request created by one of
the UAs could shadow a proxy-induced BYE but it's worth remembering.
Agreeing with you, I will update the wiki page on this aspect tomorrow.


Cheers,

--Timo