[Live-devel] Regarding Incomplete packet reads for RTCP packets in interleaved streaming(RTP/RTCP over TCP)

[Heena Sirwani]

On 30 September 2016 at 17:13, Ross Finlayson <finlayson at live555.com> wrote:

> > We are using the Live555 streaming software for streaming Audio/Video in
> one of
> > applications. We use the RTP/RTCP over TCP streaming mode(interleaved
> RTSP).
> > We have added some logs for letting us know of incomplete packet reads
> in the RTCP Instance and we see a lot of incomplete reads happening.
>
> Are you referring to the warning messages:
>         RTCPInstance error: Hit limit when reading incoming packet over
> TCP. Increase "maxRTCPPacketSize”
> ?
>

No I am not referring to those. I am referring to incomplete packet reads
for RTCP packets.
Specifically where the flag "packetReadWasIncomplete" is set.
We have logs for the stream IDs for which incomplete packet reads are made
and they have odd numbers which mean they are RTCP packets.
Here are some example logs for 2 streams from the camera:

RECEIVED PACKET SIZE 52 FOR STREAM ID 1 ON SOCKET 22
 BYTES READ = 52
 RECEIVED PACKET SIZE 52 FOR STREAM ID 3 ON SOCKET 22
 BYTES READ = 0
RTCP.CPP:358 : TCP socket #22, channel id 3 : packetReadWasIncomplete

BYTES READ=0 for every alternately received RTCP packet. And this happens a
lot of times.


>
> Those messages indicate that the RTCP transmitter is using an erroneous
> implementation of RTP/RTCP-over-TCP.
>
> If the warning message is printed by your RTSP *client* (e.g., VLC), then
> it suggests that your RTSP server may be using a (very) old version of the
> “LIVE555 Streaming Media” software.  If your RTSP server is using our
> software, then please upgrade it to use the latest version; see
>         http://live555.com/liveMedia/faq.html#latest-version
> If your RTSP server is an embedded system (such as a network camera) that
> uses our software, then note that it is a condition of the LGPL license
> that it be possible to upgrade its firmware to use the latest version of
> our software.  Please inform the manufacturer of this server of this.
>
> If the warning message is printed by your RTSP *server*, then it suggests
> that your RTSP client may be using a (very) old version of the “LIVE555
> Streaming Media” software.  If your RTSP client is VLC, then you are
> running a very old version.  Please upgrade (see <
> http://www.videolan.org/vlc/>).
>
>
> Ross Finlayson
> Live Networks, Inc.
> http://www.live555.com/
>
>
> _______________________________________________
> live-devel mailing list
> live-devel at lists.live555.com
> http://lists.live555.com/mailman/listinfo/live-devel
>
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