Re: [SR-Users] Understanding set_rtp_engine with two sets

[Juha Heinanen]

Daniel-Constantin Mierla writes:
> Hello,
> 
> I didn't know about limitation, so far I needed only set_rtpengine_set()
> with one parameter. Now I am wondering why won't work for
> rtpengine_manage() because internally it calls the
> rtpengine_offer()/_answer().

I have never used rtpengine_manage, but regarding two sets, in request
route before rtpengine_offer I do:

set_rtpengine_set("$avp(mediaproxy_caller_setid)",
"$avp(mediaproxy_callee_setid)");

and in reply route before rtpengine_answer I do the same, i.e., the sets
are in the same order.

Of course the script also needs to take care of the situation when
request has no sdp and in-dialog requests.

-- Juha

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Re: [SR-Users] Understanding set_rtp_engine with two sets

[Daniel-Constantin Mierla]

Hello,

I didn't know about limitation, so far I needed only set_rtpengine_set()
with one parameter. Now I am wondering why won't work for
rtpengine_manage() because internally it calls the
rtpengine_offer()/_answer().

Not being familiar with this use case, I would to do a test and watch
the commands towards the rtpengine via network, if looking at c code is
not making it easy to sort it out. I am also curious to learn about your
finding on this one, thus it would be good to share the results back to
mailing list.

Cheers,
Daniel

On 10.02.20 02:29, Anthony Alba wrote:
> There is a use case mentioned "This is useful if you have a set of RTP
> proxies that the caller must use, and another distinct set of RTP
> proxies that the callee must use. This is supported by all rtpengine
> commands except rtpengine_manage(). "
>
> How do you actually implement this - is it something like this?
>
> Say caller supposed to target Set 1and callee supposed to target Set 2:
> # offer/request route
> set_rtpengine_set(1, 2)
> rtpengine_offer() # cannot use rtpengine_manage()
> # callee sees set 2  in SDP, right?
>
>
> # reply_route
> set_rtpengine_set(2, 1) # reverse the order? Is this correct??
> # OR
> set_rtpengine_set(1, 2) # keep order, module does autoreversal magic
> # caller sees Set 1 in SDP
>
> My question: in the reply route do you keep the same order (module is
> clever enough to autoreverse so caller sees Set 1) OR do you
> explicitly reverse the order and THAT means caller sees Set 1.
>
> Cheer
> Anthony
>
-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training - March 9-11, 2020, Berlin - www.asipto.com
Kamailio World Conference - April 27-29, 2020, in Berlin -- 
www.kamailioworld.com


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