[SR-Users] How reply INVITE request with 200 OK that contains SDP?

[Ali Shirvani]

Hi all,

I tried to implement simple announcer by using play_media function in
latest rtpengine module. I implemented simple Lua script and I tried to
test the implementation with simple SIPp scenario.

Here is the Lua function to reply the received INVITE request.

```Lua
function ksr_route_announcer()
    KSR.info("======= Announcer =====\n");
    local u = KSR.pv.gete("$rU");
    KSR.info("username is: " .. u .. "\n");
    if u == "ann" then
         KSR.info("announcer has been called.\n");
         if KSR.textops.has_body_type("application/sdp") then
              KSR.info("request contains SDP.\n");
              KSR.tm.t_newtran();
              KSR.rtpengine.rtpengine_manage0();
              KSR.tm.t_reply(200, "OK");
              KSR.x.exit();
         end
    end
end
```

According to kamailio logs rtpengine modified the INVITE SDP, but I want to
add SDP to 200 OK response. How should I manage rtpengine to append SDP
answer to the 200 OK response?

The attached is the SIPp log, as you can see that last 200 OK doesn't
contain SDP.

Regards,
Ali
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