[asterisk-dev] SIP_HEADER in dialplan from different states of SIP dialog?
abalashov at evaristesys.com
Mon Jul 7 17:22:21 CDT 2008
Alex Balashov wrote:
> I've got a problem I was hoping someone from the developers' community
> could help me with.
> I'm running outbound calls using a B2BUA product for call progress
> detection that sets the disposition of the call in the 200 OK sent back
> to Asterisk in response to its INVITE.
> Is there some way I can get at this value either in the dial plan, or in
> Of course, I realise that deep inspection of particular states of the
> SIP dialog aren't really meant to be possible from within something as
> high-level as the dial plan. However, what I assumed was that if I punt
> the execution to a macro when the call is picked up using the M argument
> to Dial(), e.g.
> exten => ...,n,Dial(SIP/num at GW,M(outbound_macro))
> Then, because, in practise that macro is called on pickup (i.e. 200 OK),
> I would have assumed that the message from which SIP_HEADER() is parsing
> the headers is the 200 OK.
> But it's not. My tests show it's still looking at the headers in the
> initial outgoing INVITE.
> So, the question is - without hacking the code, is there some way I can
> read the value of a header that is returned in a 200 OK in an INVITE dialog?
> -- Alex
BTW, I read this:
But, I wasn't sure what constitutes getting a message "from an INVITE."
From a request whose method is itself INVITE, or one that is part of
an INVITE dialog?
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