[Kamailio-Devel] Patch: dialog module / is_known_dlg().

[Alex Balashov]

Jerome Martin wrote:
> Alex,
> 
> On Wed, 2008-11-12 at 12:32 -0500, Alex Balashov wrote:
>> Hello,
>>
>> I have attached a very simple patch to provide a new exported function 
>> from the dialog module - is_known_dlg().  This can be used from script 
>> to determine if the message being processed is part of an existing 
>> dialog tracked by the dialog module, irrespective of the use of profiles.
>>
>> Because the dialog module is plugged into the RR / TMCB event loop it is 
>> aware of all dialogs regardless of whether profiles are used.  Thus, 
> 
> I think this needs double checking, because the callback as registered
> in the dialog module might not make dialog matching available before
> t_relay or loose_route / record route is called ... I am saying this
> from memory because I had to patch my dialog module in-house at some
> point to make the dialog matching available upon entering the script
> config (thus registering an other callback like this:
> register_script_cb( dlg_onreqprescript, PRE_SCRIPT_CB|REQ_TYPE_CB,0)).
> This is counter intuitive because the tmcb TMCB_REQUEST_IN, dlg_onreq
> event, if I remember correctly, happens a bit later than what
> intuitively expected, aka after t_relay I think. Again I haven't checked
> this recently and might be wrong, just quoting from memory. 

Even if that's so, I don't know that this really injures the usefulness 
of the patch in most conceivable use cases.  I don't have dialogs that 
aren't RR'd and t_relay()'d out.  But I suppose the clarification would 
be desirable.

-- 
Alex Balashov
Evariste Systems
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