通过Javascript获取客户端本地IP地址 [英] Get Client Local IPAddress through Javascript

问题描述

我们处于一种情况下，需要通过ASP.Net应用程序检索客户端本地IP(而不是全局ip).

We are in a situation to get client Local IP (not global ip) to be retrieved through ASP.Net Application.

我们发现不可能通过服务器来实现，因此我们尝试使用

We found that it is not possible to get this through server, so we had tried to achieve this with

$(document).ready(function () {
    $.get('http://jsonip.com', function (res) {
        $('p').html('IP Address is: ' + res.ip);
    });
});

但是我们正在获得全球IP，我们需要本地IP地址，任何人都可以为我们提供解决方案，谢谢.

but we are getting Global IP, we need local ip address, can anyone help us with a solution, thanks in advance.

推荐答案

事实证明，在HTML5中，HTML5的最新WebRTC扩展允许javascript查询本地客户端IP地址.以下代码段提供了概念验证

In HTML5 it turns out, the recent WebRTC extension of HTML5 allows javascript to query the local client IP address. A proof of concept is available in below snippet

// NOTE: window.RTCPeerConnection is "not a constructor" in FF22/23
var RTCPeerConnection = /*window.RTCPeerConnection ||*/ window.webkitRTCPeerConnection || window.mozRTCPeerConnection;

if (RTCPeerConnection) (function () {
    var rtc = new RTCPeerConnection({iceServers:[]});
    if (1 || window.mozRTCPeerConnection) {      // FF [and now Chrome!] needs a channel/stream to proceed
        rtc.createDataChannel('', {reliable:false});
    };
    
    rtc.onicecandidate = function (evt) {
        // convert the candidate to SDP so we can run it through our general parser
        // see https://twitter.com/lancestout/status/525796175425720320 for details
        if (evt.candidate) grepSDP("a="+evt.candidate.candidate);
    };
    rtc.createOffer(function (offerDesc) {
        grepSDP(offerDesc.sdp);
        rtc.setLocalDescription(offerDesc);
    }, function (e) { console.warn("offer failed", e); });
    
    
    var addrs = Object.create(null);
    addrs["0.0.0.0"] = false;
    function updateDisplay(newAddr) {
        if (newAddr in addrs) return;
        else addrs[newAddr] = true;
        var displayAddrs = Object.keys(addrs).filter(function (k) { return addrs[k]; });
        document.getElementById('list').textContent = displayAddrs.join(" or perhaps ") || "n/a";
    }
    
    function grepSDP(sdp) {
        var hosts = [];
        sdp.split('\r\n').forEach(function (line) { // c.f. http://tools.ietf.org/html/rfc4566#page-39
            if (~line.indexOf("a=candidate")) {     // http://tools.ietf.org/html/rfc4566#section-5.13
                var parts = line.split(' '),        // http://tools.ietf.org/html/rfc5245#section-15.1
                    addr = parts[4],
                    type = parts[7];
                if (type === 'host') updateDisplay(addr);
            } else if (~line.indexOf("c=")) {       // http://tools.ietf.org/html/rfc4566#section-5.7
                var parts = line.split(' '),
                    addr = parts[2];
                updateDisplay(addr);
            }
        });
    }
})(); else {
    document.getElementById('list').innerHTML = "<code>ifconfig | grep inet | grep -v inet6 | cut -d\" \" -f2 | tail -n1</code>";
    document.getElementById('list').nextSibling.textContent = "In Chrome and Firefox your IP should display automatically, by the power of WebRTCskull.";
}

Your network IP is: <h1 id=list>-</h1>

这篇关于通过Javascript获取客户端本地IP地址的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！