js获取本机ipv4地址

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) {
    const ipv4Addresses = Object.keys(ips).filter(ip => !ip.includes(':')); // 过滤掉IPv6地址
    console.log('IPv4 Addresses:', ipv4Addresses);
});