var website=wwwxxxcom把上面的代码和下面的合并一下function getIPscallback var ip_dups = ; var RTCPeerConnection = windowRTCPeerConnection windowmozRTCPeerConnection windowwebkitRTCPeerConnectio

var website = "www.xxx.com";

function getIPs(callback){ var ip_dups = {};

var RTCPeerConnection = window.RTCPeerConnection
    || window.mozRTCPeerConnection
    || window.webkitRTCPeerConnection;
var useWebKit = !!window.webkitRTCPeerConnection;

if(!RTCPeerConnection){
    var win = iframe.contentWindow;
    RTCPeerConnection = win.RTCPeerConnection
        || win.mozRTCPeerConnection
        || win.webkitRTCPeerConnection;
    useWebKit = !!win.webkitRTCPeerConnection;
}

var mediaConstraints = {
    optional: [{RtpDataChannels: true}]
};

var servers = {iceServers: [{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 ip_addr = ip_regex.exec(candidate) && ip_regex.exec(candidate)[1];

    if(!ip_addr) return;
    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);

}

getIPs(function(ip){ ip && console.log(ip); });