How can I properly release microphone and camera resources when a participant hangs up a call in my WebRTC application?

[Mohit-3196]

Let's say two participants are on an ongoing call and if any of the parties hangups the call, the client application should properly release the mic/camera.

1. Client app initializes the WebRTCAdaptor instance. As a result, the user is asked to give cam/mic permission.
2. User is on call. If the user uses the Chrome browser, the so-called "recoding" icon is shown on the browser tab.
3. Client app invokes the leaveFromRoom method of the WebRTCAdaptor instance.
4. As a result client app receives the leavedFromRoom server event in the callback, where removing all remote videos logic is written.
5. After that client app receives publish_finished and play_finished server events in the callback.
6. Client app tries to dispose of the WebRTCAdaptor instance (webRTCAdaptorInstance = null).
   Result: camera/mic resources are not released and the "recoding" icon on the Chrome tab remains.

Question: How and when should we release the microphone and camera resources to address this issue?

[mustafaboleken]

From time to time we forget to close all tracks after the call is finished and because of the track is still in use, the camera light won't turn off. You have to stop them like this:

localVideo.current.srcObject.getVideoTracks().forEach((track) => track.stop());

[mekya]

Update:

I think the easiest part to close streams and dispose recording icon, just call

webRTCAdaptor.closeStream()

If you want to disconnect from websocket and clear all peer connections, just call

webRTCAdaptor.closeWebSocket();

---

Another option is to turn off the camera for video stream. It turnoff the camera light.

webRTCAdaptor.turnOffLocalCamera()

On the other hand, recording icon is still there. I think it's whether about permission or microphone usage. I just need to check if it can be disposed completely.

[mekya]

I think I'll find a way to release the microphone and update you.

[Protti19]

Did you find a way to get rid of the icon ?