Safari does not send ice candidates

Question

don't work example in safari

https://github.com/Kurento/kurento-tutorial-node/tree/master/kurento-one2many-call

In chrome, everything is fine.

Safary does not send ice candidates in view mode. Presenter mode is ok

====================

update

In the Front (index.js)

The event onOfferViewer is always executed

onIceCandidate – never executed

Connection from Front to the node

var ws = new WebSocket('wss://' + location.host + '/one2many');

On KMS a Turn doesn’t turn on, but a Stun is configured. I can broadcasting from Safari, but I cannot watching on it

Look at kurento utils deeper

2 Sturm servers are chosen, before WebRtcPeer initialization

iceServers: Array (2) 0 {username: undefined, credential: undefined, url: "stun:stun.l.google.com:19302", urls: ["stun:stun.l.google.com:19302"]}

1 {username: undefined, credential: undefined, url: "stun:stun.voipbuster.com", urls: ["stun:stun.voipbuster.com"]}

After RTCPeerConnection is created
After Process answer is executed

I think the next step has to be in a function addEventListener

pc.addEventListener('icecandidate', function (event) {…}

In Chrome in the function addEventListener a callback is executed but for Safari never.

I can assume that the candidates come before the subscription is taking place, but there is no evidence, and I don’t understand why the presenter works fine.

detail

I started broadcasting in the presenter mode in the Safari

The Safari version - 13604.3.5 (MacOs - 11.0.1)

The Safari options

Old api - Enabled

Ice restrictions - Disabled

The Bower’s dependencies

"dependencies": { 
    "adapter.js": "v0.2.9", 
    "bootstrap": "~3.3.0", 
    "ekko-lightbox": "~3.3.0", 
    "demo-console": "1.5.1", 
    "kurento-utils": "master" 
 }

The package.json structure

{ 
  "name": "kurento-one2many-call", 
  "version": "6.7.3-dev", 
  "private": true, 
  "scripts": { 
    "postinstall": "cd static && bower install" 
  }, 
  "dependencies": { 
    "express": "~4.12.4", 
    "minimist": "^1.1.1", 
    "ws": "~1.0.1", 
    "kurento-client": "Kurento/kurento-client-js" 
  }, 
  "devDependencies": { 
    "bower": "^1.4.1" 
  } 
}

Output of Safari logs

Output of Safari logs

[Log] Browser does not appear to be WebRTC-capable (adapter.js, line 34) 

[Debug] constraints: {"offerToReceiveAudio":true,"offerToReceiveVideo":true} (kurento-utils.js, line 268) 

[Debug] Created SDP offer (kurento-utils.js, line 270) 

[Debug] Local description set – "v=0 

↵o=- 5811275597248577793 2 IN IP4 127.0.0.1 

↵s=- 

↵t=0 0 

↵a=msid-semantic: WMS 

↵" (kurento-utils.js, line 275) 

"v=0 

o=- 5811275597248577793 2 IN IP4 127.0.0.1 

s=- 

t=0 0 

a=msid-semantic: WMS 

" 

[Log] Senging message: {"id":"viewer","sdpOffer":"v=0\r\no=- 5811275597248577793 2 IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\na=msid-semantic: WMS\r\n"} (index.js, line 70) 

[Info] Received message: {"id":"viewerResponse","response":"accepted","sdpAnswer":"v=0\r\no=- 3748169328 3748169328 IN IP4 0.0.0.0\r\ns=Kurento Media Server\r\nc=IN IP4 0.0.0.0\r\nt=0 0\r\na=msid-semantic: WMS\r\n"} (index.js, line 70) 

[Debug] SDP answer received, setting remote description (kurento-utils.js, line 320)  

[Debug] Remote stream: – undefined (kurento-utils.js, line 294)

How to a node connects to KMS

var argv = minimist(process.argv.slice(2), {
    default: { 
        as_uri: 'https://localhost:8443/',      
        ws_uri: 'ws://37.228.89.170:8888/kurento' 
    }
});

Mark Ch Mark Ch · Accepted Answer · 2019-02-05T12:22:56

Two options:

Safari 12 only - Need to enable the experimental feature "Enable MDNS Ice Candidates" in Safari settings, advanced, experimental features
Safari 11 - you have to call getUserMedia({video: true, audio: true}), and have the user accept the dialog box to allow video and audio on your page. Even though you don't want to use the video or audio, this then causes safari to send ice-candidates during the negotiation

Safari does not send ice candidates

update

detail

2 Answers