I'm currently running a pilot with kamailio 4.1.3 stable, and I would like to test WebRTC Capabilities. Websockets Support is runnig OK, and now I'm trying to deal with calls between WebTRC and legacy softphones. I have installed rtpengine (as it a replacement for old mediaproxy-ng), and it is running:

rtpengine --table=0 --ip=192.168.0.197 --listen-udp=127.0.0.1:12222

As a first step, I'm trying to migrate the standard NAT handling configuration to the new module.

(...)
#loadmodule "rtpproxy.so"
loadmodule "rtpproxy-ng.so"

(...)
#modparam("rtpproxy", "rtpproxy_sock", "udp:127.0.0.1:7624")
modparam("rtpproxy-ng", "rtpproxy_sock", "udp:127.0.0.1:12222")

NAT hanling is not working,  and I catched this message from /var/log/syslog

May 28 18:55:35 kamailio rtpengine[2474]: Failed to properly parse UDP command line '4547_3 d7:command4:pinge' from 127.0.0.1:60874, using fallback RE
May 28 18:55:35 kamailio rtpengine[2474]: Failed to properly parse UDP command line '4545_4 d7:command4:pinge' from 127.0.0.1:57236, using fallback RE

And from Kamailio's log:

May 28 19:23:47 kamailio /usr/local/sbin/kamailio[4868]: ERROR: rtpproxy-ng [rtpproxy.c:1425]: rtpp_test(): proxy responded with invalid response
May 28 19:23:47 kamailio /usr/local/sbin/kamailio[4869]: ERROR: rtpproxy-ng [rtpproxy.c:1425]: rtpp_test(): proxy responded with invalid response

Is rtpproxy-ng module compatible with rtpengine?

Best regards

Luis.