This question already has an answer here:
I'm trying to retrieve the IP address through javascript. This worked fine in Google Chrome and Firefox web browsers. But this does not work in the Internet Explorer and Edge.
What is the reason for not working this in internet explorer and Edge browsers?
var RTCPeerConnection = /*window.RTCPeerConnection ||*/ window.webkitRTCPeerConnection || window.mozRTCPeerConnection;
if (RTCPeerConnection)(function() {
var rtc = new RTCPeerConnection({
iceServers: []
});
if (1 || window.mozRTCPeerConnection) {
rtc.createDataChannel('', {
reliable: false
});
};
rtc.onicecandidate = function(evt) {
if (evt.candidate) grepSDP("a=" + evt.candidate.candidate);
};
rtc.createOffer(function(offerDesc) {
grepSDP(offerDesc.sdp);
rtc.setLocalDescription(offerDesc);
}, function(e) {
console.warn("offer failed", e);
});
var addrs = Object.create(null);
addrs["0.0.0.0"] = false;
function updateDisplay(newAddr) {
if (newAddr in addrs) return;
else addrs[newAddr] = true;
var displayAddrs = Object.keys(addrs).filter(function(k) {
return addrs[k];
});
document.getElementById('list').textContent = displayAddrs.join(" or perhaps ") || "n/a";
}
function grepSDP(sdp) {
var hosts = [];
sdp.split('\r\n').forEach(function(line) {
if (~line.indexOf("a=candidate")) {
var parts = line.split(''),
addr = parts[4],
type = parts[7];
if (type === 'host') updateDisplay(addr);
} else if (~line.indexOf("c=")) {
var parts = line.split(''),
addr = parts[2];
updateDisplay(addr);
}
});
}
})();
else {
document.getElementById('list').innerHTML = "<code>ifconfig| grep inet | grep -v inet6 | cut -d\" \" -f2 | tail -n1</code>";
document.getElementById('list').nextSibling.textContent = "In Chrome and Firefox your IP should display automatically, by the power of WebRTCskull.";
}<div id="list"></div>