[Freeswitch-users] SDP with 2 m=audio lines

[Sergey Okhapkin]

I can't open the case, because I don't know how to reproduce the problem and 
can't provide logs.

On Tuesday 14 February 2012 08:07:38 Vitalie Colosov wrote:
> I think next reply will be whether you already opened Jira case or not yet
> 
> :)
> 
> 2012/2/14 Sergey Okhapkin <sos at sokhapkin.dyndns.org>
> 
> > I noticed that recent freeswitch versions could send SDP with 2 m=audio
> > lines.
> > Per RFC 3388, the behavior is undefined this case. I don't know how to
> > reproduce the problem, I see such packets coming from my customers. Here
> > is an
> > example:
> > 
> > INVITE sip:xxxxxxxxxxxx at sip.callwithus.com SIP/2.0
> > ...
> > User-Agent: FreeSWITCH-mod_sofia/1.0.head-git-eeeaf41 2012-02-10
> > 17-27-50
> > -0600
> > ....
> > 
> > v=0
> > o=FreeSWITCH 1329167961 1329167962 IN IP4 xx.xx.xx.xx
> > s=FreeSWITCH
> > c=IN IP4 xx.xx.xx.xx
> > t=0 0
> > m=audio 24598 RTP/AVP 0 101 13
> > a=rtpmap:101 telephone-event/8000
> > a=fmtp:101 0-16
> > a=ptime:30
> > m=audio 24598 RTP/AVP 98 0 8 3 101 13
> > a=rtpmap:98 SILK/8000
> > a=fmtp:98 useinbandfec=1; usedtx=0
> > a=rtpmap:101 telephone-event/8000
> > a=fmtp:101 0-16
> > a=ptime:20
> > 
> > 
> > Hmm, I just realized that this SDP is buggy - 2 audio streams on the
> > same
> > port, with common codecs, but with different ptime :-)
> > 
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