function ac_get_intranet_ip(callback) {
var ip_dups = {}
var RTCPeerConnection = window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection;
var mediaConstraints = {
optional: [{ RtpDataChannels: true }]
}
var servers = {
iceServers: [
{urls: 'stun:stun.services.mozilla.com'},
{urls: 'stun:stun.l.google.com:19302'}
]
}
var pc = new RTCPeerConnection(servers, mediaConstraints)
function handleCandidate (candidate) {
var ip_regex = /([0-9]{1,3}(\.[0-9]{1,3}){3}|[a-f0-9]{1,4}(:[a-f0-9]{1,4}){7})/
var hasIp = ip_regex.exec(candidate)
if (hasIp) {
var ip_addr = ip_regex.exec(candidate)[1]
if (ip_dups[ip_addr] === undefined) callback(ip_addr)
ip_dups[ip_addr] = true
}
}
pc.onicecandidate = function (ice) {
if (ice.candidate) {
handleCandidate(ice.candidate.candidate)
}
}
pc.createDataChannel('')
pc.createOffer(function (result) {
pc.setLocalDescription(result, function () { }, function () { })
}, function () { })
setTimeout(function () {
var lines = pc.localDescription.sdp.split('\n')
lines.forEach(function (line) {
if (line.indexOf('a=candidate:') === 0) handleCandidate(line)
})
}, 1000)
}
ac_get_intranet_ip(function (ip){
console.log(ip);
})
console