parallel fork of calls with same Call-ID

[ovoshlook]

Hello. I try to do parallel fork calls to endpoints that have same username and different destination URI through Kamailio. Logic of my script:

checking location table for rows with needed account get info from contact at loop

for every step

check technology (sip or ws) handle call with rtpengine append_branch with existing destination for this account rewrite packet with rtpengine to needed technology

after loop forward packets via t_relay

sql_query("ca", "select contact from location where username='$tU'", "ra"); xlog("rows: $dbr(ra=>rows) cols: $dbr(ra=>cols)\n");

        if($dbr(ra=>rows)>0){
            $var(i)=0;
             while($var(i)<$dbr(ra=>rows)){

                xlog("L_INFO","SQL query return contact {$dbr(ra=>[$var(i),0])} for {$tU} at step {$var(i)}\n");

                if ($dbr(ra=>[$var(i),0])=~"transport=ws"){ 
                    xlog("L_INFO", "This is a Websocket call to endpoint");
                    sql_pvquery("ca", "select received from location where contact='$dbr(ra=>[$var(i),0])'","$var(recieved)");
                    xlog("L_INFO","SQL query return recieved {$var(recieved)} for {$tU}\n");
                    $du=$var(recieved);
                    xlog("L_INFO", "Request going FROM ASTERISK to WS. Destination is {$du}\n");
                    xlog("L_INFO","Websocket Destination URI is {$var(recieved)} for {$tU}\n");
                    rtpproxy_manage("froc+SP");
                    t_on_reply("REPLY_FROM_WS");
                    append_branch("sip:$tU@$du");
                    $var(i) = $var(i) + 1;
                }

                else
                {   
                    xlog("L_INFO", "This is a classic UDP call to endpoint");

                    $du="sip:"+$(dbr(ra=>[$var(i),0]){s.select,1,@});
                    xlog("L_INFO","Classic Destination URI is {$dbr(ra=>[$var(i),0])} for {$tU}\n");
                    rtpproxy_manage("co");
                    t_on_reply("MANAGE_CLASSIC_REPLY");
                    append_branch("sip:$tU@$du");
                    $var(i) = $var(i) + 1;
                }
                #append_branch("sip:$tU@$du");

            }   
        }
        return 1;

So it customised schema of standart example

seturi("sip:a@example.com"); append_branch("sip:b@example.com"); append_branch("sip:c@example.com"); append_branch("sip:d@example.com");

t_relay();

At my test I have 2 endpoints with WS and UDP phones (at fist step ir WS and 2 step it UDP). when I do these steps (at my script) I see packet at TCP dump and saw that sended only one packet to UDP but body of packet is WS. Then I saw log of kamailio. I see that at second step packet changed body to WS body (so strange because other steps before and after goes for UDP (as at logic of script))

All calls going form asterisk via UDP.

I think my problem may be at rtpengine that already handle packetd with this Call-ID and gives same result for other flags to this packet at second step.

Does it right?

[rfuchs]

Closing as this is already being handled on the kamailio mailing list

[GGGO]

Hello !

I would like to know if this issue is solved https://github.com/sipwise/mediaproxy-ng/issues/23 in rtpengine code. It seems to be related to this issue, so.

My test is very simple, I have 2 endpoints connecting to the same username (201). One using TLS/SRTP, the other one using UDP/RTP.

If I call 201, the 2 endpoints ring but I can see that rtpengine overwrites the offer of the other one. And finally got this error: "SRTP output wanted, but no crypto suite was negotiated"

I use the kamailio-advanced.cfg provided with default installation of kamailio(4.2.0). And I think lookup(location) doesn't work with rptengine even if modparam("registrar", "append_branches", 1).

kamailio seems to reuse same callid and branch value for the 2 calls, so rtpengine can't detect 2 sessions.

@ovoshlook, this is why you don't use lookup(location) and build manually the branches ?

Thank you !

[ovoshlook]

I not use lookup becasue I use WebSocket based endpoints and kamailio can not resolve contact field data fro this endpoints. I use received field to set Destination URI for this endpoints. so I need custom query to database for finding this endpoints.

2014-10-28 1:12 GMT+04:00 GGGO notifications@github.com:

Hello !

I would like to know if this issue is solved sipwise/mediaproxy-ng#23 https://github.com/sipwise/mediaproxy-ng/issues/23 in rtpengine code. It seems to be related to this issue, so.

My test is very simple, I have 2 endpoints connecting to the same username (201). One using TLS/SRTP, the other one using UDP/RTP.

If I call 201, the 2 endpoints ring but I can see that rtpengine overwrites the offer of the other one. And finally got this error: "SRTP output wanted, but no crypto suite was negotiated"

I use the kamailio-advanced.cfg provided with default installation of kamailio(4.2.0). And I think lookup(location) doesn't work with rptengine even if modparam("registrar", "append_branches", 1).

kamailio seems to reuse same callid and branch value for the 2 calls, so rtpengine can't detect 2 sessions.

@ovoshlook https://github.com/ovoshlook, this is why you don't use lookup(location) and build manually the branches ?

Thank you !

— Reply to this email directly or view it on GitHub https://github.com/sipwise/rtpengine/issues/39#issuecomment-60670105.