[OpenSIPS-Users] Mediaproxy RTP not capture-able?

[Jeff Pyle]

Killy,

You were absolutely right.  In some cases, they were leaving via eth0.

The default route of the box is via eth0.  Using ³ip route add table² and
then ³ip rule add from² I send all traffic sourced from eth1¹s IP to a
router connected to eth1.  In this way on all my voice-enabled boxes I keep
the voice traffic on the voice network (eth1) and the non-voice traffic on
eth0.  In this case it seems somehow Mediaproxy is slipping past the rule
that sends traffic via the different gateway.  But, only some of the time.
Mediaproxy¹s RTP (during 183) leaves via eth1 until the second host begins
sending traffic to Mediaproxy.  Once that happens, all Mediaproxy¹s RTP
leaves via eth0.  Very strange.  All media after 200 is also leaves via the
wrong interface.


- Jeff
 


On 12/15/08 10:55 PM, "Wasin Thiengkunagrit" <wasin.th at gmail.com> wrote:

> Hi Jeff, I thought that it seems to be possible that MediaProxy send the
> packet to another interface card. Can you try this command to capture the
> packets ? "tcpdump -w mydump.cap -i any udp" Cheers, Killy 2008/12/16 Jeff
> Pyle <jpyle at fidelityvoice.com>: > Hello, > > I have a working OpenSIPS 1.4 +
> Mediaproxy 2.1 configuration.  At the > moment, no NAT is involved, and
> opensips.cfg is set to engage_media_proxy() > on all initial invites.  It
> works just fine. > > I created a pcap file with the command "tshark ­w mp.pcap
> ­i eth1 udp", > causing all the udp on interface eth1 (where OpenSIPS and
> Mediaproxy > function) to dump to mp.pcap.  During the 183 Session Progress
> and after the > call was established with 200 OK, I see the RTP packets
> arriving into > Mediaproxy.  But I do not see them leaving the box destined
> for the other > side.  Yet I seem to have perfect two-way audio on the
> call. > > Is Mediaproxy sending the packets at such a level where
> Wireshark/tshark > misses them? > > > Thanks, > Jeff >

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