Ok. Thanks. I install 4.1.3 Kamailio and rtpengine as a daemon



rtpengine started as:

./rtpengine --ip=MY.PUB.IP.OF_Kam --listen-udp=127.0.0.1:7723 --listen-ng=127.0.0.1:7724 --pidfile=/var/run/rtpengine.pid


Now I need to proxy rtp beween my clients and my asterisk then tow at the public Net and this interfaces addede to dispatcher

At my configuration at kamailio i do this
modparam("rtpproxy-ng", "rtpproxy_sock", "udp:127.0.0.1:7724")

And for at routes to asterisk do this:
route[TOASTERISK] {
        ds_mark_dst("P");
        if(!ds_select_dst("1", "4")) {
                sl_send_reply("500", "Service Unavailable");
                xlog("L_INFO","[$fU@$si:$sp]{$rm} No destinations available for $rd \n");
                exit;
        }

        xlog("L_INFO","[$fU@$si:$sp]{$rm} From Outside World to Asterisk Box $du\n");
        rtpproxy_manage("cawei");

 route(FINAL_RELAY);
 exit;

}

route[FROMASTERISK] {
   if(ds_is_from_list("1")){
         rtpproxy_manage("cawie");
         xlog("L_INFO","[$fU@$si:$sp]{$rm} Call from Media-Server Cluster\n");
         sql_pvquery("ca", "select received from location where username='$tU'","$var(res)");
        xlog("L_INFO","SQL query return {$var(res)} for {$tU}\n");
         $du=$var(res);
     return 1;
   }
 return -1;
}


route[FINAL_RELAY]
{
        if (!t_relay()) {
                sl_reply_error();
        }
}



ar /var/log/syslog I see that rtpengine (as rtpproxy_offer) changing SDP c= at incoming connections from address of client to Public IP of Kamailio, and sucsessfully transfered this packet to asterisk and as rtpproxy_answer stay with no changes this address, so client and asterisk know that they must sent RTP packets tp kamailio for proxy rtp through kamailio.

I see only one warning

test rtpengine[3355]: Unknown flag encountered: 'symmetric'

after that i see at asterisk that it send RTP packets to kamailio (with "via ICE"), but I see no incoming RTPpackets.

One thing make me confused me - rtpproxy_offer (at TOASTERISK route) adds a=candidate with kamailio PUBLIC IP, I think that asterisk and client things that kamailioo is STUN server (that is not write).

So I have 2 questions after this:
1. What about flag? Why rtpengine does not know it?
2. How send write stun from kamailio to client and asterisk? 
 



2014-07-03 23:46 GMT+04:00 Andrew Pogrebennyk <apogrebennyk@sipwise.com>:
On 03/07/14 16:42, Yuriy Gorlichenko wrote:
> thanks for fas reply. If I may user rtpengine as rtpproxy maybe you
> already use it or just know - does rtpengine provide ridge mode as
> rtpproxy between internal and external interfaces? At my instalne if I add
> rtpengine --ip=my.ext.net.addr/my.int.net.addr
> It shows that ip if wrong, but I neet proxy rtp between interfaces.
> Thanks.

rtpengine does not support the bridge mode.

Regards,
Andrew

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