WebRTC Card fails randomly to load on Safari about webrtc

[vuminhkh]

On Safari, when it does not work, I see a lot of queries GET /api/camera_proxy/camera.visio_phone HTTP/1.1 in parallel, it looks like a bug which make the card retry the query in a loop until overload completely Safari

[vuminhkh]

I put some debug logs in video-rtc.js

pc.addEventListener('iceCandidate', ev => {
            if (ev.candidate && this.mode.indexOf('webrtc/tcp') >= 0 && ev.candidate.protocol === 'udp') return;

            const candidate = ev.candidate ? ev.candidate.toJSON().candidate : '';
            console.log("Candidate", candidate);
            this.send({ type: 'webrtc/candidate', value: candidate });
        });

It looks like whenever I see 'candidate:574532630 1 tcp ...', Safari begins to freeze, when it works well candidate exchanges stop at udp. I have no firewall, and it works pretty well when my phone uses cellular network, it's only a problem when my phone is connected to my local network, it's pretty bizarre, on chrome it works a lot better, the connection is established a lot more rapidly and no bug.

[AlexxIT]

Keep an eye on this issue AlexxIT/go2rtc#927
Also you can:

• use network host for Frigate container
• set static port for go2rtc webrtc UDP protocol (it is random by default)