function getIPs(callback) {
let recode = {};
let RTCPeerConnection = window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection;
if (!RTCPeerConnection) {
let win = iframe.contentWindow;
RTCPeerConnection = win.RTCPeerConnection || win.mozRTCPeerConnection || win.webkitRTCPeerConnection;
}
//创建实例,生成连接
let pc = new RTCPeerConnection();
const ips = []
// 匹配字符串中符合ip地址的字段
function handleCandidate(candidate) {
let ip_regexp = /([0-9]{1,3}(\.[0-9]{1,3}){3}|([a-f0-9]{1,4}((:[a-f0-9]{1,4}){7}|:+[a-f0-9]{1,4}){6}))/;
let ip_isMatch = candidate.match(ip_regexp)[1];
if (!recode[ip_isMatch]) {
ips.push(ip_isMatch)
recode[ip_isMatch] = true;
callback(ips);
}
}
//监听icecandidate事件
pc.onicecandidate = (ice) => {
if (ice.candidate) {
handleCandidate(ice.candidate.candidate);
}
};
//建立一个伪数据的通道
pc.createDataChannel('');
pc.createOffer((res) => {
pc.setLocalDescription(res);
}, () => { });
//延迟,让一切都能完成
setTimeout(() => {
let lines = pc.localDescription.sdp.split('\n');
lines.forEach(item => {
if (item.indexOf('a=candidate:') === 0) {
handleCandidate(item);
}
})
}, 1000);
}
getIPs(function (ips) {
})