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@mataprasad
Created December 7, 2018 18:20
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// Example (using the function below).
getLocalIPs(function(ips) { // <!-- ips is an array of local IP addresses.
document.body.textContent = 'Local IP addresses:\n ' + ips.join('\n ');
});
function getLocalIPs(callback) {
var ips = [];
var RTCPeerConnection = window.RTCPeerConnection ||
window.webkitRTCPeerConnection || window.mozRTCPeerConnection;
var pc = new RTCPeerConnection({
// Don't specify any stun/turn servers, otherwise you will
// also find your public IP addresses.
iceServers: []
});
// Add a media line, this is needed to activate candidate gathering.
pc.createDataChannel('');
// onicecandidate is triggered whenever a candidate has been found.
pc.onicecandidate = function(e) {
if (!e.candidate) { // Candidate gathering completed.
pc.close();
callback(ips);
return;
}
var ip = /^candidate:.+ (\S+) \d+ typ/.exec(e.candidate.candidate)[1];
if (ips.indexOf(ip) == -1) // avoid duplicate entries (tcp/udp)
ips.push(ip);
};
pc.createOffer(function(sdp) {
pc.setLocalDescription(sdp);
}, function onerror() {});
}
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