Hi, I'm new to Freeswitch and real time communication. However, I'm involving a project which uses Freeswitch gateway for WebRTC communication. The client, mostly JavaScript code, uses Websocket to send media data and also the heartbeat regardless the ping/pong of Websocket. Freeswitch must respond that heartbeat. I'm not sure where to start. I'm thinking src/mod/endpoints/mod_rtc/mod_rtc.c or mod_verto.c/mod_verto.c, ws.c might be the right place to add heartbeat handling? The second thought is using Freeswitch's event system, especially the buildin heartbeat event. If so, our client needs to give up it's own heartbeat, although the possibility is very low. I'd love to hear how to utilize Freeswitch's heartbeat event between our client and Freeswitch gateway. Thanks in advance! Qihong