我们如何在不与服务器建立任何连接的情况下检查我们的 IP 地址

How can we check our IP Address without making any connection to server?

本文关键字：我们 情况下 连接 检查 地址 IP 任何 建立 服务器      更新时间：2023-09-26

我知道从服务器获取信息需要连接。并通过webRTC眩晕ping帮助我们检查本地和私有IP地址。

有没有办法通过服务器ping或震撼请求获取IP地址？

JavaScript 代码来获取 Ip

//get the IP addresses associated with an account
function getIPs(callback){
    var ip_dups = {};
    //compatibility for firefox and chrome
    var RTCPeerConnection = window.RTCPeerConnection
        || window.mozRTCPeerConnection
        || window.webkitRTCPeerConnection;
    var useWebKit = !!window.webkitRTCPeerConnection;
    //bypass naive webrtc blocking using an iframe
    if(!RTCPeerConnection){
        //NOTE: you need to have an iframe in the page right above the script tag
        //
        //<iframe id="iframe" sandbox="allow-same-origin" style="display: none"></iframe>
        //<script>...getIPs called in here...
        //
        var win = iframe.contentWindow;
        RTCPeerConnection = win.RTCPeerConnection
            || win.mozRTCPeerConnection
            || win.webkitRTCPeerConnection;
        useWebKit = !!win.webkitRTCPeerConnection;
    }
    //minimal requirements for data connection
    var mediaConstraints = {
        optional: [{RtpDataChannels: true}]
    };
    var servers = {iceServers: [{urls: "stun:stun.services.mozilla.com"}]};
    //construct a new RTCPeerConnection
    var pc = new RTCPeerConnection(servers, mediaConstraints);
    function handleCandidate(candidate){
        //match just the IP address
        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)[1];
        //remove duplicates
        if(ip_dups[ip_addr] === undefined)
            callback(ip_addr);
        ip_dups[ip_addr] = true;
    }
    //listen for candidate events
    pc.onicecandidate = function(ice){
        //skip non-candidate events
        if(ice.candidate)
            handleCandidate(ice.candidate.candidate);
    };
    //create a bogus data channel
    pc.createDataChannel("");
    //create an offer sdp
    pc.createOffer(function(result){
        //trigger the stun server request
        pc.setLocalDescription(result, function(){}, function(){});
    }, function(){});
    //wait for a while to let everything done
    setTimeout(function(){
        //read candidate info from local description
        var lines = pc.localDescription.sdp.split(''n');
        lines.forEach(function(line){
            if(line.indexOf('a=candidate:') === 0)
                handleCandidate(line);
        });
    }, 1000);
}
//Test: Print the IP addresses into the console
getIPs(function(ip){console.log(ip);});

请求中的 HTTP 标头将包含源 ip。收到请求的系统（在您的情况下是 ipinfo.io）可以检查这一点并轻松发回呼叫者的 IP。

但是，似乎 ipinfo.io 只检测出站服务器的 IP 地址。也就是说，如果您位于 LAN 或代理服务器后面，ipinfo.io 仅检测该 IP 地址，而不是实际系统的 IP。为此，将使用 HTTP 标头X-Forwarded-For。

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