Hello,

afaik, one rtpproxy instance can listen on a single IP for RTP traffic, or two if started in bridging mode. Typically 0.0.0.0 is about listening on any and in such cases applications can have different behaviour. If you want a single RTP relay to listen on many ip addresses and just forward rtp or do bridging, then look at rtpengine, is more flexible with these options (at least compared to rtpproxy from 2-3 years ago, when I used it more, because since its package was removed from debian stable, no longer having the convenience of apt install for small voip systems, I just deploy rtpengine).

Cheers,
Daniel

Hi,

A bit of debug in rtpproxy: I found out that if I use  -l 10.10.111.234 instead of  -l 0.0.0.0 in the command line, it's working as expected.

I'm not able to understand if this is a bug, or an expected behavior.

Sorry that I answered my question alone ;)

Regards

Aymeric

Le jeu. 24 sept. 2020 à 17:49, Aymeric Moizard <amoizard@gmail.com> a écrit :

A bit more information on the rtpproxy and kamailio exchange: this is what I receive on rtpproxy (2.1.0)

DBUG:GLOBAL:get_command: received command "11479_4 Uc18,8,0,101 109865504 90.66.177.103 30250 4178279503;1"
INFO:GLOBAL:rtpp_command_ul_handle: new IPv4/IPv4 session 109865504, tag 4178279503;1 requested, type strong
INFO:109865504:rtpp_command_ul_handle: new session on IPv4 port 51694 created, tag 4178279503;1

Regards,

Aymeric

Le jeu. 24 sept. 2020 à 15:33, Aymeric Moizard <amoizard@gmail.com> a écrit :

Hi,

I have 2 hosts on AWS behind NAT:

One with rtpproxy:

/usr/local/bin/rtpproxy -f -p /run/rtpproxy/rtpproxy.pid -s udp:0.0.0.0:31500 -A 15.236.230.177 -l 0.0.0.0 -m 35000 -M 65000 -d DBUG:LOG_LOCAL5 -u rtpproxy:rtpproxy -F

The other one, with a kamailio and using only rtpproxy_manage(); without parameters.

I'm surprised because in my SDP being modified, kamailio is replacing with its KAMILIO private IP. (not the rtpproxy one)

I see that rtpproxy and kamailio are exchanging data. Nothing obvious is coming out.

Any obvious mistakes?

Anything you need to help?

Should I switch to another rtp engine?

Regards

Aymeric

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