Simple-peer WebRTC Error: Ice connection failed

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I can not make the Simple-Peer NPM library to connect between two computers in two different networks in Browser. If the computers are in the same local network, the browsers connect each other, but otherwise, I can not make them connect.

Both browsers return this error:

"Error: Ice connection failed. 
at Peer._onIceStateChange"
at RTCPeerConnection.Peer.self._pc.oniceconnectionstatechange

The signalling looks right for me:

{ type: 'offer',
     sdp: 'v=0\r\no=- 2275520429720515716 2 IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\na=group:BUNDLE data\r\na=msid-semantic: WMS\r\nm=application 49523 DTLS/SCTP 5000\r\nc=IN IP4 5.12.206.160\r\na=candidate:2020300070 1 udp 2113937151 192.168.2.8 49523 typ host generation 0 network-cost 50\r\na=candidate:842163049 1 udp 1677729535 5.12.206.160 49523 typ srflx raddr 192.168.2.8 rport 49523 generation 0 network-cost 50\r\na=ice-ufrag:Ph/x\r\na=ice-pwd:csnTbzHs+dxzakEKPY8LfvBg\r\na=fingerprint:sha-256 B9:C0:9D:91:46:1B:E8:5C:83:B1:11:A7:C5:D7:64:97:A6:63:D9:12:11:0F:9A:05:8F:46:83:BC:90:38:86:9E\r\na=setup:actpass\r\na=mid:data\r\na=sctpmap:5000 webrtc-datachannel 1024\r\n' } }

{ type: 'answer',
     sdp: 'v=0\r\no=- 1356997482353729498 2 IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\na=group:BUNDLE data\r\na=msid-semantic: WMS\r\nm=application 56005 DTLS/SCTP 5000\r\nc=IN IP4 86.126.104.54\r\nb=AS:30\r\na=candidate:2702239670 1 udp 2113937151 192.168.1.103 56003 typ host generation 0 network-cost 50\r\na=candidate:842163049 1 udp 1677729535 86.126.104.54 56005 typ srflx raddr 192.168.1.103 rport 56003 generation 0 network-cost 50\r\na=ice-ufrag:W6zA\r\na=ice-pwd:1NhU5D47rSz83ANxlY+Tz/XI\r\na=ice-options:trickle\r\na=fingerprint:sha-256 2C:0B:78:49:F5:F0:44:6C:86:DD:27:BC:B6:7D:77:B9:B1:07:F4:2F:37:F5:24:D9:A3:54:7D:B3:A0:3C:57:C0\r\na=setup:active\r\na=mid:data\r\na=sctpmap:5000 webrtc-datachannel 1024\r\n' } }

but when the library wants to establish the connection, both browsers return the above-mentioned error.

This my code

//TUTORIAL BASED ON
// https://github.com/feross/simple-peer

var initiator = (location.hash||'') === '#1';
console.log("inititator",location.hash , initiator);

var Peer = require('simple-peer');

params = {
    initiator: initiator,
    trickle: false,
    reconnectTimer: 100,
    iceTransportPolicy: 'relay',
    config: {

        iceServers: [
            {
                urls: "stun:numb.viagenie.ca",
                username: "pasaseh@ether123.net",
                credential: "12345678"
            },
            {
                urls: "turn:numb.viagenie.ca",
                username: "pasaseh@ether123.net",
                credential: "12345678"
            }
        ]
    }
};

if (typeof window === "undefined"){
    var wrtc = require('wrtc');
    params.wrtc=  wrtc;
}

var p = new Peer(params);

p.on('error', function (err) { console.log('error', err) })

p.on('signal', function (data) {
    console.log('SIGNAL', JSON.stringify(data));
    document.querySelector('#outgoing').textContent = JSON.stringify(data)
});

document.querySelector('form').addEventListener('submit', function (ev) {
    ev.preventDefault();
    console.log("am apasat pe button");
    p.signal(JSON.parse(document.querySelector('#incoming').value))
});

let index = Math.floor(Math.random()*100);

p.on('connect', function (data) {

    console.log('CONNECT', data, p);

    setInterval(function() {
        if ((typeof p !== 'undefined')&& ( p !== null)) {
            console.log(p);
            p.send('whatever' + index + " ___ " + Math.random())
        }
    }, 500);

    p.on("hello", function(data){
        alert(data);
    });

    p.emit("hello",55);

})

p.on('data', function (data) {
    console.log('data: ' + data)
});

module.exports = function(){
    console.log("Hello World Server");
};

webrtc-internals

Any solution to this problem? Thanks

2 Answers

The screenshot from chrome://webrtc-internals shows that despite the TURN server credentials you use, no icecandidate with type relay is gathered. See this blog post for details.

You can check the credentials using this page

i suggest using still working ice servers when listing your ice server as below

new SimplePeer({
          initiator: false,
          tricle: false,
          config: {
            iceServers: [
              {
                urls: "turn:numb.viagenie.ca",
                credential: "muazkh",
                username: "webrtc@live.com",
              },
            ],
          },
        })
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