Hi Saúl, Thanks for your reply. I did send you the details off-list for the sake of privacy.
Thanks, Remco. On Tue, Jan 8, 2013 at 11:00 AM, Saúl Ibarra Corretgé <[email protected]>wrote: > Hi, > > On Jan 8, 2013, at 10:49 AM, Remco . wrote: > > > Hi all, > > > > I seem to experience a strange issue regarding Mediaproxy running on > OpenSIPS The following scenario: > > > > A. UA (asterisk) <=> OpenSIPS <=> UA (asterisk) B. > > > > I verified the following: > > > > - Both UA's have nat=never, no re-invite is taking place (verified by > capture). > > - Ports in SDP are rewritten, and match the ports Mediaproxy opens. > > - Call has audio, in both directions. > > > > After 60 seconds mediaproxy logs a conntrack_timeout, and the call loses > audio in both directions. > > > > The following port schema is negotiated: > > > > A. 11496 <=(capture)=> 30600 OpenSIPS 30602 <=> 17026 B. > > > > The RTP stream is captured at (capture) between A and the proxy. > > > > The first 3 RTP packet traverse from B => A on the correct ports over > the relay. > > Then a packet is sent the other way A => B on the corect ports over the > relay. > > > > Then the strange thing happens, the next packet going B => A is sent > with a source port of 1024 by the relay. > > All subsequent packets in the stream are exchanged between A (11496/udp) > and OpenSIPS (1024/udp). > > > > I think the loss of the call is explained by the leg between the relay > and B torn down, because of the conntrack timeout on leg A (mediaproxy sees > no RTP on the expected ports). > > Also, port 1024 is not allowed by firewalls as it's not expected for > media to pass over this port. > > > > I observe this on quite a number of calls, all being torn down after 60 > seconds. Doing a random selection on them, they all seem to use port 1024 > for RTP as described in the scenario above. > > > > Can you send the syslog output from mediaproxy and a SIP trace of the call? > > Regards, > > -- > Saúl Ibarra Corretgé > AG Projects > > > > > _______________________________________________ > Users mailing list > [email protected] > http://lists.opensips.org/cgi-bin/mailman/listinfo/users >
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