如何在节点中确定用户的IP地址

如何从控制器中确定给定请求的IP地址？例如(快递):

app.post('/get/ip/address', function (req, res) {
    // need access to IP address here
})

topek.. 418

在您的request对象中有一个名为的属性connection,它是一个net.Socket对象.net.Socket对象有一个属性remoteAddress,因此您应该能够通过此调用获取IP:

request.connection.remoteAddress

请参阅http和net的文档

编辑

正如@juand在评论中指出的那样,如果服务器位于代理之后,获取远程IP的正确方法是 request.headers['x-forwarded-for']

在您的request对象中有一个名为的属性connection,它是一个net.Socket对象.net.Socket对象有一个属性remoteAddress,因此您应该能够通过此调用获取IP:

request.connection.remoteAddress

请参阅http和net的文档

编辑

正如@juand在评论中指出的那样,如果服务器位于代理之后,获取远程IP的正确方法是 request.headers['x-forwarded-for']

var ip = req.headers['x-forwarded-for'] || 
     req.connection.remoteAddress || 
     req.socket.remoteAddress ||
     (req.connection.socket ? req.connection.socket.remoteAddress : null);

请注意,有时您可以获得多个IP地址req.headers['x-forwarded-for'].此外,x-forwarded-for不会始终设置标头,这可能会引发错误.

该领域的一般格式是:

的x转发换: client, proxy1, proxy2, proxy3

其中值是逗号+空格分隔的IP地址列表,最左边是原始客户端,每个连续的代理通过请求添加接收请求的IP地址.在此示例中,请求通过proxy1,proxy2然后传递proxy3.proxy3显示为请求的远程地址.

这是Arnav Gupta建议的解决方案,马丁在下面的评论中为x-forwarded-for未设置的案例提出了修正:

var ip = (req.headers['x-forwarded-for'] || '').split(',').pop() || 
         req.connection.remoteAddress || 
         req.socket.remoteAddress || 
         req.connection.socket.remoteAddress

req.ip

我正在看这个,然后我就像等待,我正在使用快递.咄.

您可以保持DRY并且只使用支持IPv4和IPv6的node-ipware.

安装:

npm install ipware

在您的app.js或中间件中:

var getIP = require('ipware')().get_ip;
app.use(function(req, res, next) {
    var ipInfo = getIP(req);
    console.log(ipInfo);
    // { clientIp: '127.0.0.1', clientIpRoutable: false }
    next();
});

它将尽最大努力获取用户的IP地址或返回127.0.0.1以指示它无法确定用户的IP地址.查看README文件以获取高级选项.

您可以使用request-ip来检索用户的IP地址.它处理了相当多的不同边缘情况,其中一些在其他答案中提到.

披露:我创建了这个模块

安装:

npm install request-ip

在您的应用中:

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();
};

希望这可以帮助

request.headers['x-forwarded-for'] || request.connection.remoteAddress

如果x-forwarded-for标题在那里然后使用它,否则使用该.remoteAddress属性.

The x-forwarded-for header is added to requests that pass through load balancers (or other types of proxy) set up for HTTP or HTTPS (it's also possible to add this header to requests when balancing at a TCP level using proxy protocol). This is because the request.connection.remoteAddress property will contain the private ip address of the load balancer rather than the public ip address of the client. By using an OR statement, in the order above, you check for the existence of an x-forwarded-for header and use it if it exists otherwise use the request.connection.remoteAddress.

以下函数已涵盖所有案例将有所帮助

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);

function getCallerIP(request) {
    var ip = request.headers['x-forwarded-for'] ||
        request.connection.remoteAddress ||
        request.socket.remoteAddress ||
        request.connection.socket.remoteAddress;
    ip = ip.split(',')[0];
    ip = ip.split(':').slice(-1); //in case the ip returned in a format: "::ffff:146.xxx.xxx.xxx"
    return ip;
}

let ip = req.header('x-forwarded-for') || req.connection.remoteAddress;