Re: [Linphone-users] Re: Incorrect m=video media-field in 200 OK SDP

[Simon Morlat]

Hi Ivan,

Thanks for reporting this problem. You are right.
We have fixed it on git, future releases will present compliant SDP for
rejecting a media line.

Simon

Le mardi 29 mars 2011 à 13:36 +0400, Ivan Khvatov a écrit :
> Hello.
> 
> Any comments/ideas? Maybe advice how to report this issue to developers?
> 
> Please, help.
> 
> On 25.03.2011, at 19:07, Ivan Khvatov wrote:
> 
> > Hello all.
> > 
> > Linphone 3.4.2 in audio mode sends incorrect SDP message on incoming 
> > video-calls. Specially, video media-field does not match the RFC4566 
> > grammar.
> > 
> > Part of SDP message in 200 OK message from Linphone (full trace see in 
> > debug logs in footer of this email):
> > """
> > m=video 0 RTP/AVP
> > a=inactive
> > """
> > 
> > media-field grammar:
> > """
> > media-field =         %x6d "=" media SP port ["/" integer]
> >                      SP proto 1*(SP fmt) CRLF
> > """
> > 
> > i.e.: m=<media> <port> <proto> <fmt> ...
> > 
> > So, at least one "fmt" field is required. By the way, older Linphone 
> > (3.3.2) does not put m=video in this case. Linphone 3.4.2 and 3.3.2 uses 
> > same version of eXosip2 library (according User-Agent header version is 
> > 3.3.0).
> > 
> > 
> > How to reproduce:
> > 1. Switch Linphone to "Audio only" mode.
> > 2. Make video call to Linphone.
> > 3. Answer call on Linphone.
> > 
> > 
> > Actual results:
> > Call establishing fails. Remote party did not understand SDP in 200 OK 
> > reply and drop call.
> > 
> > 
> > Expected results:
> > Successfully established audio call.
> > 
> > 
> > Linphone version: 3.4.2
> > Linphone 3.3.2 works fine.
> > 
> > 
> > Debug logs:
> > 
> > Linphone 3.4.2 debug log (from startup to test call, call failed):
> > http://dev.sgu.ru/pub/linphone-3.4.2-audio-only.log
> > 
> > Linphone 3.3.2 debug log (from startup to test call, successful call):
> > http://dev.sgu.ru/pub/linphone-3.3.2-audio-only.log
> > 
> > I hope that this is right mailing list for this report. If not, let me know.
> > 
> > -- 
> > WBR, Ivan Khvatov
> > 
>