Edit: A nice implementation in github.io taken from comment to another answer( choose “relay” in IceTransports value):
following Benjamin Trent’s advice, I wrote the below code to test TURN server’s connectivity, works on both firefox n chrome:
function checkTURNServer(turnConfig, timeout){
return new Promise(function(resolve, reject){
setTimeout(function(){
if(promiseResolved) return;
resolve(false);
promiseResolved = true;
}, timeout || 5000);
var promiseResolved = false
, myPeerConnection = window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection //compatibility for firefox and chrome
, pc = new myPeerConnection({iceServers:[turnConfig]})
, noop = function(){};
pc.createDataChannel(""); //create a bogus data channel
pc.createOffer(function(sdp){
if(sdp.sdp.indexOf('typ relay') > -1){ // sometimes sdp contains the ice candidates...
promiseResolved = true;
resolve(true);
}
pc.setLocalDescription(sdp, noop, noop);
}, noop); // create offer and set local description
pc.onicecandidate = function(ice){ //listen for candidate events
if(promiseResolved || !ice || !ice.candidate || !ice.candidate.candidate || !(ice.candidate.candidate.indexOf('typ relay')>-1)) return;
promiseResolved = true;
resolve(true);
};
});
}
example usage:
checkTURNServer({
urls: 'turn:127.0.0.1',
username: 'test',
credential: 'test'
}).then(function(bool){
console.log('is TURN server active? ', bool? 'yes':'no');
}).catch(console.error.bind(console));
You can run the below snippet to check:
var res = id('result');
id('button').onclick = function(){
res.innerHTML = 'Checking TURN Server...';
var url="turn:"+id('url').value+':'+id('port').value,
useUDP = id('udp').checked;
url +='?transport=" + (useUDP ? "udp': 'tcp');
checkTURNServer({
urls: url,
username: id('name').value,
credential: id('pass').value
}, id('time').value).then(function(bool){
if(bool)
res.innerHTML = 'Yep, the TURN server works...';
else
throw new Error('Doesn\'t work');
}).catch(function(e){
console.log(e);
res.innerHTML = 'TURN server does not work.';
});
};
function checkTURNServer(turnConfig, timeout){
console.log('turnConfig: ', turnConfig);
return new Promise(function(resolve, reject){
setTimeout(function(){
if(promiseResolved) return;
resolve(false);
promiseResolved = true;
}, timeout || 5000);
var promiseResolved = false
, myPeerConnection = window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection //compatibility for firefox and chrome
, pc = new myPeerConnection({iceServers:[turnConfig]})
, noop = function(){};
pc.createDataChannel(""); //create a bogus data channel
pc.createOffer(function(sdp){
if(sdp.sdp.indexOf('typ relay') > -1){ // sometimes sdp contains the ice candidates...
promiseResolved = true;
resolve(true);
}
pc.setLocalDescription(sdp, noop, noop);
}, noop); // create offer and set local description
pc.onicecandidate = function(ice){ //listen for candidate events
if(promiseResolved || !ice || !ice.candidate || !ice.candidate.candidate || !(ice.candidate.candidate.indexOf('typ relay')>-1)) return;
promiseResolved = true;
resolve(true);
};
});
}
function id(val){
return document.getElementById(val);
}#url{
width: 250px;
}
#port{
width: 70px;
}<h1>
Test TURN server
</h1>
<div>
TURN URL: <input id='url' placeholder="example.com or xxx.yyy.rrr.ddd" />
Port: <input type="number" value="3478" id='port' placeholder="enter a port number" />
</div>
<div>
Transport: <input type="radio" name="transport" id="tcp" value="tcp" /> TCP
<input type="radio" name="transport" id="udp" value="udp" checked/>UDP
</div>
<div>
Username: <input id="name" placeholder="turn username" />
</div>
<div>
password: <input id="pass" placeholder="turn password" />
</div>
<div>
checking Timeout: <input type="number" id="time" placeholder="wait time before checking timeout" value=5000 />
</div>
<div>
<button id='button'>
Check TURN Server
</button>
</div>
<h4 id='result'></h4>