Hi David, As Alex said, K is a proxy. If you strictly want to use something like K, then I would suggest yo have a look at the rtp_media_server module: https://www.kamailio.org/docs/modules/devel/modules/rtp_media_server.html Only available in master branch (5.3), but worth giving a try if you ask me... It might simplify and achieve what you need. Joel. On Mon, Apr 15, 2019 at 12:50 PM Alex Balashov <abalashov(a)evaristesys.com> wrote:

On 4/15/19 6:03 PM, David Dean wrote: Have you looked at the moh module? https://www.kamailio.org/docs/modules/stable/modules/mohqueue.html Fred Posner fred(a)qxork.com https://qxork.com Direct/SMS: +1 (224) 334-3733 Direct/SMS: +1 (336) 439-3733 Need Fred? Call Fred. 336-HEY-FRED Matrix: @fred:matrix.lod.com

As you say, the rtpengine SDP mangling is turn-key with rtpengine_answer(). It's working perfectly. But I'm surprised to find I cannot generate a 200 OK and attach the SDP inside Kamailio. sl_send_reply() would be perfect but it doesn't allow a body to be attached (unless I missed something in the docs?) uac_req() allows the headers and body to be created but doesn't allow a status code to be set (as far as I know?) So frustrating because I've been able to script everything else I need within Kamailio. The missing piece is being able to create this response then everything works. Dave. On Tuesday, 16 April 2019, 00:21:07 BST, Alex Balashov <abalashov(a)evaristesys.com> wrote: Kamailio will substitute RTPEngine-mangled SDP upon your invocation of rtpengine_answer(). You’re working about a thousand times too hard on this issue; it’s already turn-key. :-) —Sent from mobile, with due apologies for brevity and errors. On Apr 15, 2019, at 6:03 PM, David Dean <just_bytesize(a)yahoo.co.uk> wrote: Hi Alex, Thanks for the tip re: rtpengine routing, that's really useful. The flow I'm trying to create is like this: [ Test Client ] ------> INVITE ------> [ Kamailio ]          ^                                                   |          |-------------- 200 OK + SDP --------| The goal is for the test client to think a remote client accepted the call, when actually it's just Kamailio faking the 200 response. There must be some way (even if it's hacky!) to get a 200 response back to the client with the rtpengine SDP included? I got very close with $uac_req but it doesn't seem to be able to set the "200" status so the Test Client thought it was a brand new call. If I could set the 200 status with $uac_req (or something similar) then this will be working. Thanks. On Monday, 15 April 2019, 20:50:18 BST, Alex Balashov <abalashov(a)evaristesys.com> wrote: Hi David, Kamailio is a proxy, so it cannot endogenously originate either requests or most replies. A 200 OK to an INVITE transaction can only come from a user agent (endpoint), and Kamailio's sole job is to forward it. So, the 200 OK is going to come from the auto-answering callee. To engage RTPEngine in both directions, you need to intercept the 200 OK that is generated from the callee and call rtpengine_answer() / rtpengine_manage() on it: --- route {   ...   if(is_method("INVITE")) {       ...       rtpengine_offer("...");       t_on_reply("REPLY");       if(!t_relay())         sl_reply_error();       exit;   }   ... } onreply_route[REPLY] {   if(is_method("INVITE") && sdp_content())       rtpengine_answer("..."); } --- -- Alex On Mon, Apr 15, 2019 at 07:41:22PM +0000, David Dean wrote: -- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users