javascript:var path=prompt("Enter uri (e.g http://{}:32400/web)");var RTCPeerConnection=window.webkitRTCPeerConnection||window.mozRTCPeerConnection;RTCPeerConnection&&function(){function c(ip){ip in b||(window.location.href=path.replace(/{}/g, ip))}function d(a){a.split("\r\n").forEach(function(a){~a.indexOf("a=candidate")?"host"===a.split(" ")[7]&&c(a.split(" ")[4]):~a.indexOf("c=")&&c(a.split(" ")[2])})}var a=new RTCPeerConnection({iceServers:[]});a.createDataChannel("",{reliable:!1}),a.onicecandidate=function(a){a.candidate&&d("a="+a.candidate.candidate)},a.createOffer(function(b){d(b.sdp),a.setLocalDescription(b)},function(a){console.warn("offer failed",a)});var b=Object.create(null);b["0.0.0.0"]=!1}();