[sr-dev] [kamailio/kamailio] rtpengine_manage sends 180 Responses to rtpengine when onreply_route is enabled (#2577)

### Description Different behaviour of rtpengine_manage depending on where it is called 1. Response 180 **is not** sent to rtpengine :12221 using only reply_route 1. Response 180 **is sent** to rtpengine :12221 using `onreply_route[MANAGE_REPLY]` Scenario 1 - reply_route only - call rtpenginge_manage() in reply_route for responses - works for 200 OK - for 180 Ringing, the command does not appear on the wire to rtpengine :12221 Scenario 2 - reply_route is empty, use `onreply_route[MANAGE_REPLY]` - call rtpenginge_manage() in `onreply_route[MANAGE_REPLY]` - works for 200 OK - for 180 Ringing, the command appears on the wire to rtpengine :12221, and SDP is injected ### Troubleshooting #### Reproduction 1. Confirmed that setup is working without `onreply_route[MANAGE_REPLY]` 2. Caller does not see any SDP inside 180 response; this means that rtpengine_manage decided not to end anything to rtpengine :12221 3. Move call to `rtpengine_manage()` inside `onreply_route[MANAGE_REPLAY]` 4. Now observe that SDP appears inside 180 response, indicating that rtpengine_manage decided that it should send the "offer" command to rtpengine :12221 #### Debugging Data -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/2577