node 獲取用戶ip地址

在node層獲取訪問用戶的ip地址

var express = require('express');
var app = express()
app.get('/', function(req, res){
    console.log( getClientIp(req))
})

function getClientIp(req) {
return req.headers['x-forwarded-for'] ||
    req.connection.remoteAddress ||
    req.socket.remoteAddress ||
    req.connection.socket.remoteAddress;
};
app.listen(3000)