Created
November 8, 2017 05:45
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Check user IP address via webkitRTCPeerConnection
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| /** | |
| * Get the user IP throught the webkitRTCPeerConnection | |
| * @param {Function} onNewIP listener function to expose the IP locally | |
| * @return undefined | |
| */ | |
| const getUserIP = (onNewIP) => { // onNewIp - your listener function for new IPs | |
| //compatibility for firefox and chrome | |
| let myPeerConnection = window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection; | |
| let pc = new myPeerConnection({iceServers: [] }), | |
| noop = () => {}, | |
| localIPs = {}, | |
| ipRegex = /([0-9]{1,3}(\.[0-9]{1,3}){3}|[a-f0-9]{1,4}(:[a-f0-9]{1,4}){7})/g, | |
| key; | |
| const iterateIP = ip => { | |
| if (!localIPs[ip]) onNewIP(ip); | |
| localIPs[ip] = true; | |
| } | |
| //create a bogus data channel | |
| pc.createDataChannel(""); | |
| // create offer and set local description | |
| pc.createOffer(sdp => { | |
| sdp.sdp.split('\n').forEach(function(line) { | |
| if (line.indexOf('candidate') < 0) return; | |
| line.match(ipRegex).forEach(iterateIP); | |
| }); | |
| pc.setLocalDescription(sdp, noop, noop); | |
| }, noop); | |
| //listen for candidate events | |
| pc.onicecandidate = ice => { | |
| if (!ice || !ice.candidate || !ice.candidate.candidate || !ice.candidate.candidate.match(ipRegex)) return; | |
| ice.candidate.candidate.match(ipRegex).forEach(iterateIP); | |
| }; | |
| } | |
| // Usage | |
| // getUserIP(ip => console.log(ip)); |
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