[Live-devel] RTCPInstance questions

[Rawling, Stuart]

>> >2.  I have debug turned on and I see RTCP messages being received
>> >from myself. 
>> >I presume this is a multicast session (if it were a unicast session,
>> >then the RTCP packets should be sent back directly to the server, and
>> >the client would never get a chance to receive them itself).  I
>> >didn't see a question in the paragraph above - but Remember, You Have
>> >Complete Source Code.
> 
> It turns out I was handling the Groupsocks wrong.
> I have an RtpReceiver class that takes 3 parameters sourceIP destinationIP and
> destinationPort.
> In multicast mode, the destinationIP would be the multicast address, in
> unicast mode it would be the IP of the interface the application would receive
> the stream on.
> 
> I was setting the groupAddr of the rtcp socket to be the destination address
> always (which would mean I would send the packets to myself in unicast, and
> the multicast group in multicast).  Obviously this is wrong, as I should
> always be sending directly back to the source.  I have made this change and
> things are looking good.
> 
> As I was checking into how to setup the groupsocks, I seem to see that in the
> MediaSession class the groupAddr passed to the changeDestination call is the
> multicast address when streaming multicast, but the source address of the
> server when streaming unicast.  Is this correct?  If so how does one account
> for multi-homed systems.  I am presuming it will filter on the SSRC of the
> incoming packet?
> 
> Thanks for the reply btw, figured it out pretty quick after that.
> 
> Stuart



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