Re: [reSIProcate-users] Answered SDP has two media entries

[Francesco Lamonica <alienpenguin@xxxxxxxxx>]

Thanks Scott,

I'll try to make a simple app that shows this behaviour and post it here.

regards

On Wed, Dec 7, 2016 at 7:57 PM, Scott Godin <sgodin@xxxxxxxxxxxxxxx> wrote:

That is not expected.  I have no idea why you would be seeing this.  If you can post a test program that shows this behaviour, we can probably help.

For your reference the resip/stack/test/testSdp unit tests contain some good sample code for using the SdpContent class.  Also, its a good starting point for a little test program that could be created to show the behaviour you describe.

Cheers,

Scott

On Wed, Dec 7, 2016 at 1:38 PM, Francesco Lamonica <alienpenguin@xxxxxxxxx> wrote:

Hi all, 

i receive with a simple resiprocate app the following sdp in the answer:

---------> ANSWERED SDP <-----------

v=0

o=root 735036303 735036303 IN IP4 192.168.23.107

s=KalliopePBX/4.3.1

c=IN IP4 192.168.23.107

t=0 0

m=audio 15732 RTP/AVP 8 0 101

a=rtpmap:8 PCMA/8000

a=rtpmap:0 PCMU/8000

a=rtpmap:101 telephone-event/8000

a=fmtp:101 0-15

a=maxptime:150

a=sendrecv

Then if i call

   SdpContents::Session::MediumContainer answeredMediaVec = answeredSdp.session().media();
    qDebug() << "There are # of answered media: " << answeredMediaVec.size();

i do get the output: There are # of answered media: 2

and if i iterate over answeredMediaVec like this:

for (itAnsMedia = answeredMediaVec.begin(); itAnsMedia != answeredMediaVec.end(); ++itAnsMedia) {

        qDebug() << itAnsMedia->name().c_str() << " -- "

                 << itAnsMedia->protocol().c_str() << " -- "

                 << itAnsMedia->port() << " -- " << sessionConnection; //FIXME - this should / could be overridden by m= connection

the output is:

audio -- RTP/AVP -- 15732 -- "192.168.23.107"

audio -- RTP/AVP -- 15732 -- "192.168.23.107"

Is this the expected behaviour? if so, can you explain why? i would expect to see just one media session, provided the SDP that was received in the onAnswer() callback.

Thanks everyone for any hints :)

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