[Freeswitch-users] ESL Reporting of RTCP / Jitter is incorrect... does not match RTP originally reported

Fri Oct 2 06:32:21 MSD 2015

No media or jitter buffer related improvements will be made to 1.4.
1.6 is mandatory to explore such options.

On Thu, Oct 1, 2015 at 8:35 PM, Ítalo Rossi <italo at freeswitch.org> wrote:

> I'd start testing this with latest master, if you can reproduce the same
> problem there, file a jira with a test scenario
>
> On Wed, Sep 30, 2015 at 1:11 PM, David S. Dee <dsdee at dsba.net> wrote:
>
>> Hello again...
>>
>> Just to cover myself, I recompiled freeswitch from the ground up, with a
>> fresh clone of the git repository for the v1.4 branch... hoping that maybe
>> there was something that did not get recompiled correctly, but I am still
>> seeing these same issues when accessing the RTCP data via a Perl event
>> client.  I moved a greatly-minimized version of the event client to the
>> actually Voip machine itself in an attempt to eliminate any network byte
>> ordering issues, but that did not help either.  I still suspect it is a
>> byte-alignment or storage sizing discrepancy that is happening between the
>> switch_rtp.c module and when it gets received on the client side by the ESL
>> module, but I can't prove it.
>>
>> Any chance that I can get some attention from someone more knowledgeable
>> on this aspect of Freeswitch that I can troubleshoot this with, and
>> possibly figure out the code fixes that need to happen?
>>
>> Thanks,
>> David
>>
>>
>>
>>
>> On Wed, Sep 23, 2015, at 09:40, David S. Dee wrote:
>> >
>> > I am trying to do some external actions based on the RTCP reporting of
>> Jitter that comes in.
>> >
>> > My problem is that the numbers that show up in the freeswitch logs no
>> longer match what gets reported via Event'ing
>> >
>> > eg, the freeswitch logs show:
>> >
>> >
>> > 2015-09-23 08:22:24.221437 [NOTICE] switch_rtp.c:5206 Receiving an RTCP
>> packet[2015-23-08 14:22:24.241238] SSRC[626145724]RTT[0.092102]
>> A[874528193] - DLSR[38600] - LSR[874483557]
>> > 2015-09-23 08:22:29.622369 [NOTICE] switch_rtp.c:5206 Receiving an RTCP
>> packet[2015-23-08 14:22:29.640323] SSRC[626145724]RTT[0.106003]
>> A[874882028] - DLSR[63832] - LSR[874811249]
>> > 2015-09-23 08:22:35.041676 [NOTICE] switch_rtp.c:5206 Receiving an RTCP
>> packet[2015-23-08 14:22:35.60396] SSRC[626145724]RTT[0.142044] A[875237238]
>> - DLSR[88997] - LSR[875138932]
>> > 2015-09-23 08:22:40.461243 [NOTICE] switch_rtp.c:5206 Receiving an RTCP
>> packet[2015-23-08 14:22:40.480321] SSRC[626145724]RTT[0.181702]
>> A[875592438] - DLSR[113836] - LSR[875466694]
>> > 2015-09-23 08:22:45.882464 [NOTICE] switch_rtp.c:5206 Receiving an RTCP
>> packet[2015-23-08 14:22:45.900353] SSRC[626145724]RTT[0.215042]
>> A[875947645] - DLSR[139264] - LSR[875794288]
>> > 2015-09-23 08:22:51.301265 [NOTICE] switch_rtp.c:5206 Receiving an RTCP
>> packet[2015-23-08 14:22:51.320380] SSRC[626145724]RTT[0.249069]
>> A[876302852] - DLSR[164560] - LSR[876121969]
>> >
>> > And the (short form) of what I receive via the ESL are:
>> >
>> >
>> >
>> > Sep 23 09:33:55:       RTCP message not sent, too soon: SSRC: 255239bc,
>> RTP-Timestamp: 0, Sender-Packet-Count: 0, Octect-Packet-Count: 874483557,
>> Last-RTP-Timestamp: 2018933311, RTP-Rate: 8000, Capture-Time:
>> 1443018144241365, Source0-Fraction: 129, Source0-Lost: 3388998144,
>> Source0-Highest-Sequence-Number-Received: 626145724, Source0-Jitter:
>> 16777216, Source0-LSR: 788957780, Source0-DLSR: 17891
>> > Sep 23 09:34:00:       RTCP message not sent, too soon: SSRC: 255239bc,
>> RTP-Timestamp: 0, Sender-Packet-Count: 0, Octect-Packet-Count: 874811249,
>> Last-RTP-Timestamp: 2018973151, RTP-Rate: 8000, Capture-Time:
>> 1443018149640379, Source0-Fraction: 129, Source0-Lost: 3388998144,
>> Source0-Highest-Sequence-Number-Received: 626145724, Source0-Jitter:
>> 16777216, Source0-LSR: 788957780, Source0-DLSR: 17891
>> > Sep 23 09:34:05:       RTCP message not sent, too soon: SSRC: 255239bc,
>> RTP-Timestamp: 0, Sender-Packet-Count: 0, Octect-Packet-Count: 875138932,
>> Last-RTP-Timestamp: 2019013151, RTP-Rate: 8000, Capture-Time:
>> 1443018155060479, Source0-Fraction: 129, Source0-Lost: 3388998144,
>> Source0-Highest-Sequence-Number-Received: 626145724, Source0-Jitter:
>> 16777216, Source0-LSR: 788957780, Source0-DLSR: 17891
>> > Sep 23 09:34:15:       RTCP message not sent, too soon: SSRC: 255239bc,
>> RTP-Timestamp: 0, Sender-Packet-Count: 0, Octect-Packet-Count: 875794288,
>> Last-RTP-Timestamp: 2019093311, RTP-Rate: 8000, Capture-Time:
>> 1443018165900409, Source0-Fraction: 129, Source0-Lost: 3388998144,
>> Source0-Highest-Sequence-Number-Received: 626145724, Source0-Jitter:
>> 16777216, Source0-LSR: 788957780, Source0-DLSR: 17891
>> > Sep 23 09:34:20:       RTCP message not sent, too soon: SSRC: 255239bc,
>> RTP-Timestamp: 0, Sender-Packet-Count: 0, Octect-Packet-Count: 876121969,
>> Last-RTP-Timestamp: 2019133311, RTP-Rate: 8000, Capture-Time:
>> 1443018171320579, Source0-Fraction: 129, Source0-Lost: 3388998144,
>> Source0-Highest-Sequence-Number-Received: 626145724, Source0-Jitter:
>> 16777216, Source0-LSR: 788957780, Source0-DLSR: 17891
>> >
>> > (yes, the timestamps are off right now, that's actually fine).
>> >
>> > This used to work in an older version of Freeswitch, but when I rebuilt
>> my system with an updated FS version last month, this broke.
>> >
>> > You'll note that the Sender-Packet-Count is (obviously) wrong, as well
>> as the RTP-Timestamp, and the DLSR and LSR... none of them advance, while
>> you can see them advancing in the freeswitch log.
>> >
>> > I suspect it is alignment of the values in the structure that gets
>> populated for the ESL, but my C is rusty enough that I can't trace it
>> anymore.
>> >
>> > Is anyone else able to view the Event data for RTCP packets?
>> >
>> > Thanks,
>> > David
>> >
>> >
>> _________________________________________________________________________
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>>
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>
>
>
> --
> Ítalo Rossi
> italo at freeswitch.org
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> Official FreeSWITCH Sites
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> http://confluence.freeswitch.org
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>
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