javascript 获取本机ip chrome 谷歌浏览器 extension 谷歌扩展

代码一：

  if (typeof window != 'undefined') {
    var RTCPeerConnection = window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection;
    if (RTCPeerConnection)(() => {
      var rtc = new RTCPeerConnection()
      rtc.createDataChannel(''); //创建一个可以发送任意数据的数据通道
      rtc.createOffer(offerDesc => { //创建并存储一个sdp数据
        rtc.setLocalDescription(offerDesc)
      }, e => {
        console.log(e)
      })

      rtc.onicecandidate = (evt) => { //监听candidate事件
        if (evt.candidate) {
          console.log('evt:', evt.candidate)
          let ip_rule = /([0-9]{1,3}(\.[0-9]{1,3}){3}|[a-f0-9]{1,4}(:[a-f0-9]{1,4}){7})/
          var ip_addr = ip_rule.exec(evt.candidate.candidate)[1]
          console.log('ip_addr:', ip_addr) //打印获取的IP地址
        }
      }
    })()
    else {
      console.log("没有找到")
    }
  }

代码二：

function getLocalIPs(callback) {
  var ips = [];

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

  var pc = new RTCPeerConnection({
    // Don't specify any stun/turn servers, otherwise you will
    // also find your public IP addresses.
    iceServers: []
  });
  // Add a media line, this is needed to activate candidate gathering.
  pc.createDataChannel('');

  // onicecandidate is triggered whenever a candidate has been found.
  pc.onicecandidate = function (e) {
    if (!e.candidate) { // Candidate gathering completed.
      pc.close();
      callback(ips);
      return;
    }
    var ip = /^candidate:.+ (\S+) \d+ typ/.exec(e.candidate.candidate)[1];
    if (ips.indexOf(ip) == -1) // avoid duplicate entries (tcp/udp)
      ips.push(ip);
  };
  pc.createOffer(function (sdp) {
    pc.setLocalDescription(sdp);
  }, function onerror() {});
}

如果获取到的格式为：xxxx-xxxx-xxxx-xxxx.local，则需要改下chrome的设置（默认隐藏了本机ip）
搜索chrome://flags/#enable-webrtc-hide-local-ips-with-mdns
将Anonymize local IPs exposed by WebRTC置为disabled

听说有些版本没有这个设置，那就得再继续找方案了~