[SR-Users] kamailio + rtpengine: damaged media (Red Hat Linux)

Alexey Rybalko alexey.rybalko at gmail.com
Tue Jun 10 11:41:45 CEST 2014


Hello!

2014-06-09 19:06 GMT+04:00 Richard Fuchs <rfuchs at sipwise.com>:

Hard to tell what the problem is without looking at the RTP traffic. The
> log looks fine. The delay you mentioned could indicate that it might be
> the kernel module that's misbehaving. Perhaps you can try the same thing
> again, but without the iptables rules installed (and/or without the
> kernel module loaded), and see if that makes a difference.
>

Richard, thank you. I believe the problem is related to the kernel module.
Media flows smoothly without it. (Just have tried with no module loaded and
no iptables' rules).
I have sent rtp dump to your email. May be you would have the time to check
it. As the problem occurs on encrypted RTP (DTLS-SRTP) only, I suppose that
'glitched' media is  wrong encrypted or unencrypted payload for some
unknown reason.

That's curious, perhaps something went wrong when compiling the kernel
>  module then? I have to admit that I have zero experience with rtpengine
> on Red Hat myself.
>

However there were no errors during the module compilation:












*$ MEDIAPROXY_VERSION="\"3.3.0.0\"" makemake -C
/lib/modules/2.6.32-358.el6.x86_64/build M=/usr/src/rtpengine/kernel-module
O=/lib/modules/2.6.32-358.el6.x86_64/build modulesmake[1]: Entering
directory `/usr/src/kernels/2.6.32-358.el6.x86_64'  CC [M]
/usr/src/rtpengine/kernel-module/xt_MEDIAPROXY.o  Building modules, stage
2.   MODPOST 1 modules  CC
/usr/src/rtpengine/kernel-module/xt_MEDIAPROXY.mod.o  LD [M]
/usr/src/rtpengine/kernel-module/xt_MEDIAPROXY.ko.unsigned  NO SIGN [M]
/usr/src/rtpengine/kernel-module/xt_MEDIAPROXY.ko make[1]: Leaving
directory `/usr/src/kernels/2.6.32-358.el6.x86_64'*
regards,
Alexey
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