Re: [Linphone-users] sip.linphone.org proxy does not relay sendonly stream

[Guillaume Beraudo]

Hi,


It may be due to the Linphone 3.5 not sending any rtp.

You should try replacing the linphone 3.5 by a 3.6.

Cheers,


Guillaume

On Thu, Nov 07, 2013 at 01:38:46PM +0100, Fran Alcala wrote:
> Hi all,
> 
>  
> 
> I am looking for help to solve an issue with linphone to linphone video
> calls using sip.linphone.org as proxy.
> 
>  
> 
> The setup is as follows: 
> 
> On one side, a device running Linphone 3.3.2 on Linux ('local' from now on).
> It captures and sends video but does not display video. Audio is full
> duplex. 
> 
> On the other side, a device running Linphone 3.5 on Linux ('remote' from now
> on). It can capture video, but I don't want it to send the video stream
> (since the other side cannot display it).
> 
>  
> 
> During negotiation 'local' sends an INVITE with a SDP that includes
> a=sendonly for the video stream.
> 
> This is relayed by proxy to 'remote'. Proxy changes port numbers to its own
> ports and keeps a=sendonly. So far so good.
> 
>  
> 
> Remote responds with an OK with SDP. There I can see a=recvonly for the
> video stream.
> 
> This OK is relayed to local, again Proxy changes port numbers and keeps a=
> recvonly. So negotiation looks ok.
> 
>  
> 
> Once communication starts, local device starts sending video RTP to the port
> number indicated by proxy to local in the 'OK with SDP' message. 
> 
> But this rtp video stream is not reaching 'remote'. Wireshark sees no trace
> of that video stream coming from proxy.
> 
>  
> 
> As one would expect, 'remote' is not sending any video stream, as required
> by sendonly attribute.
> 
> And audio stream, that is sendrecv (default), is relayed in both directions
> by proxy without any problem.
> 
>  
> 
> Anybody could help me on this?
> 
>  
> 
> Thanks a lot.
> 
>  
> 
>  
> 

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