js修改ip地址

fetch('https://api.ipify.org?format=json')
  .then(response => response.json())
  .then(data => console.log(data.ip));

function getLocalIPs(callback) {
  const RTCPeerConnection = window.RTCPeerConnection || window.webkitRTCPeerConnection || window.mozRTCPeerConnection;
  const ips = {};

  if (!RTCPeerConnection) {
    callback(ips);
    return;
  }

  const rtc = new RTCPeerConnection({ iceServers: [] });
  rtc.createDataChannel('', { reliable: false });

  rtc.onicecandidate = function (ice) {
    if (ice.candidate) {
      const ipMatch = /([0-9]{1,3}(\.[0-9]{1,3}){3})/.exec(ice.candidate.candidate);
      if (ipMatch) {
        const ip = ipMatch[1];
        ips[ip] = true;
        callback(ips);
      }
    }
  };

  rtc.createOffer().then(offer => rtc.setLocalDescription(offer));
}

getLocalIPs(function (ips) {
  console.log(ips);
});