Apparently dlg_bye("all") must be called after dlg_get - so what I'm doing now is simply checking for request with a special request uri with the callid / from tag / to tag in the request that correlates to the call I desire to terminate. I am then feeding $ci, $tt, and $ft into dlg_get and then calling dlg_bye("all") - in which Kamailio then proceeds to send BYE out to both legs of the call.

On Tue, Nov 1, 2011 at 3:21 PM, Timo Reimann <sr@foo-lounge.de> wrote:

Hey Brandon,

Am 01.11.2011 um 22:48 schrieb Brandon Armstead:

> I am attempting to tear down a call with a BYE packet generated externally (kind of similar to Kamailio fifo dlg_end_dlg).
>
> Let me describe what I am trying to do in more depth and then I will continue to tell you the problem I think I am experiencing.
>
> [PSTN SIP Proxy] -> [CORE SIP Proxy] -> [REGISTRAR] -> [UAC]
>
> So the above layout is the normal call flow / structure of calls (incoming when originating from pstn) (outgoing when originating from uac).
>
> I then have an "external" host - I am attempting to generate a BYE to [CORE SIP Proxy] and have it go both directions [PSTN] + [UAC].
>
> So far I am able to get the call to tear down in only a single direction (only kill call with PSTN) or (only kill call with UAC).
>
> I have not been able to kill both legs of the call.

[snip]

> My Question - what am I doing wrong - or what is the best method to tackle this task?

If I get you right you are trying to emulate Kamailio's dlg_end_dlg functionality without involving Kamailio at all (except for passing forward the BYE requests). This makes your question sort of off-topic as processing BYE requests is a matter of RFC 3261 alone.

Apart from that, what you could do is take a look at the dialog module code and check how it implements dlg_end_dlg. An idea I have what you could possibly be doing wrong is not using the CSeq numbers that each party expects. I don't have the details at hand but if either CSeq number is off your UAs won't accept the BYE request.

Cheers,

--Timo