Thanks for the explanation Richard! Much appreciated! Sorry I didn't read the documentation properly.... I agree the network should be more reliable, but I will investigate if those parameters can help me. That's good news about the HTTP and websocket support! Looking forward to it!
Thank you! Kind regards! On Thu, 3 Sep 2020 at 22:34, Richard Fuchs <rfu...@sipwise.com> wrote: > On 02/09/2020 19.30, Patrick Wakano wrote: > > Hello list, > Hope you are all well. > > Under some load test simulations I've been facing cases where the command > Kamailio sends to RTPEngine times out with such message: > send_rtpp_command(): timeout waiting reply for command "" from RTP proxy > After checking RTPEngine logs, I can see the command was received and a > reply was sent, so I am thinking the reply packet could have been lost > somewhere in the network (they are in different servers). So my question > is, how resilient is the RTPEngine NG protocol to handle packet loss > situations? I saw TCP is not supported, so are there UDP retransmissions in > place to guarantee packet delivery? Any ideas to make this connection more > reliable? > > The module automatically resends the command a number of times if no reply > was received within the timeout period. The modparam `rtpengine_retr` is > how many times a command is resent, and `rtpengine_tout_ms` is how long it > waits (in ms) each time for a reply. > > If you don't get a reply even after multiple retries, you might have an > underlying network issue. Most often this is due to broken IP fragmentation > in the network. > > We're currently working on adding HTTP and Websocket support to rtpengine, > so this could be used in the future as control protocol from Kamailio > instead of UDP, even though in a properly functioning network there's no > reason why UDP shouldn't be as reliable as TCP. > > Cheers > _______________________________________________ > Kamailio (SER) - Users Mailing List > sr-users@lists.kamailio.org > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users >
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