我们可以在node js中检查这段代码

const os       = require('os');
const interfaces = os.networkInterfaces();

let addresses = [];

for (var k in interfaces) {

    for (var k2 in interfaces[k]) {

        const address = interfaces[k][k2];

        if ( (address.family === 'IPv4' || address.family === 'IPv6')  && 
            !address.internal) {

            addresses.push(address.address);

        }
    }
}
console.log(addresses);

你可以使用request-ip来获取用户的ip地址。它处理了很多不同的边界情况，其中一些在其他答案中提到过。

披露:我创建了这个模块

安装:

npm install request-ip

在你的应用中:

var requestIp = require('request-ip');

// inside middleware handler
var ipMiddleware = function(req, res, next) {
    var clientIp = requestIp.getClientIp(req); // on localhost > 127.0.0.1
    next();
};

希望这能有所帮助

在节点10.14中，在nginx后面，你可以通过nginx头请求它来检索ip，就像这样:

proxy_set_header X-Real-IP $remote_addr;

然后在你的app.js中:

app.set('trust proxy', true);

在那之后，你想让它出现的地方:

var userIp = req.header('X-Real-IP') || req.connection.remoteAddress;

Var ipaddress = (req。标题(“x-forwarded-for”)| | req.connection.remoteAddress | | req.socket.remoteAddress | | req.connection.socket.remoteAddress) .split (", ") [0];

以下函数涵盖了所有的情况，将会有所帮助

var ip;
if (req.headers['x-forwarded-for']) {
    ip = req.headers['x-forwarded-for'].split(",")[0];
} else if (req.connection && req.connection.remoteAddress) {
    ip = req.connection.remoteAddress;
} else {
    ip = req.ip;
}console.log("client IP is *********************" + ip);

如果使用express…

req.ip

我在查这个，然后我想，等等，我用的是快递。咄。