Hi Ross,
Thanks for your support.
Actually I try to have some support from a commercial linux in order to see I
it's possible to fix this very old problem...
Regards,
Michel.
[@@ THALES GROUP INTERNAL @@]
De : live-devel-boun...@ns.live555.com
[mailto:live-devel-boun...@ns.live555.com] De la part de Ross Finlayson
Envoyé : mercredi 3 juillet 2013 02:45
À : LIVE555 Streaming Media - development & use
Objet : Re: [Live-devel] RTCP Sender Report Flooding
We didn't understood deeply what brings the RTCP sender report flooding, but we
has such a behavior using multicast stream that share the same multicast port.
Wireshark analysis show that an RTCP sender report is forwarded between 2 RTSP
servers without ends.
We tried to understand the comment in RTCP.cpp that decide to resend a packet
when SSM flag is set and packet comes from another host.
It could be again a consequence of the multicast problem in linux using ASM.
Yes, that's your problem. Because of a bug in the Linux kernel, you should not
(if you are running Linux) have two different applications receiving multicast
streams that have the same port number (even if the multicast IP addresses are
different).
Don't you think it could be more robust to remove the SSM argument in
RTCPInstance constructor and get it from RTCPgs->isSSM() ?
No, that would be wrong, because the "isSSM()" function (which, I admit, has a
misleading name) tells you whether the "groupsock" object was created to
*receive* a SSM stream - i.e., whether it was given an IP source address, in
addition to a multicast address. It doesn't tell you whether or not the
groupsock was created to *send* a SSM stream.
For instance in testH264VideoStreamer.cpp seems to make a confusion.
No, there's no 'confusion' here.
The RTCPIntance is create with SSM flag set but it use the ASM GroupSock, isn't
it ?
No it doesn't. The code explicitly choses an IP multicast address from the
'SSM' range, and sends it as a SSM stream.
Ross Finlayson
Live Networks, Inc.
http://www.live555.com/
_______________________________________________
live-devel mailing list
live-devel@lists.live555.com
http://lists.live555.com/mailman/listinfo/live-devel
