Get remote IP adress not working on node - node.js

I'm trying to get the remote IP address from an incoming connection using express. Already tried the common solutions found in the web:
req.headers['x-forwarded-for'] / result: always undefined
req.socket.remoteAddress / result: always getting the Gateway IP (IE: 192.168.1.1) instead of the external address.
Any clues?

Are you testing this by running the app in a VM on your own machine? If so, you're getting the right answer. The X-Forwarded-For is empty, since there's no proxy, and you're seeing the virtual interface on the host machine which the VM uses to route out from. That's the IP from which the request comes.

Here's some code i used at http://th.issh.it/ip
Maybe it's case sensitive?
exports.iptoy = function(req,res) {
var clientip = req.socket.remoteAddress;
var xffip = req.header('X-Forwarded-For');
var ip = xffip ? xffip : clientip;
if(req.params.format == 'json')
res.send({client:clientip,xforwardedfor:xffip});
else
res.send(ip+"\n");
}

Related

How to get local IP address of user connected through request - Nodejs

I have not been able to find any answer to this. I am looking for a way to obtain the local IP address of the user connected to my node server. I found the answer to find a way to get the user's public IP address, and was useful. I also need a way to determine which computer is connected, so the local IP as well through, possibly, something like this:
app.post('getip', function(req,res)
{
var localIP = req.headers['something or other'];
}
Thanks,
This should get you the IP in NodeJS if you're behind a proxy like nginx.
app.post('getip', function(req, res)
{
var localIP = req.headers["x-forwarded-for"];
}

Get Remote Ip Address in a .NET CORE 2.1 app hosted in Azure as a Docker Linux

I'm trying get the Remote IP Address from client inside the controller of a AspNetCore 2.1 API, but I'm getting the same IP everytime (Request.HttpContext?.Connection?.RemoteIpAddress?.ToString() == "::ffff:172.18.0.1").
My config for forwarded headers:
app.UseForwardedHeaders(new ForwardedHeadersOptions
{
ForwardedHeaders = ForwardedHeaders.All,
RequireHeaderSymmetry = false,
KnownProxies = {
IPAddress.Parse("::ffff:172.18.0.0"),
IPAddress.Parse("::ffff:172.18.0.1"),
IPAddress.Parse("172.18.0.1"),
IPAddress.Parse("172.18.0.0")
}
});
I'm using the standart Dockerfile for AspNetCore 2.1 App.
Also inside of the Kudu dashboard of the Azure, I can see my real IP in the headers: X-Client-IP, and X-Forwarded-For, but still unable to get it in the request context.
What I'm missing? Theres another way to get the Remote Ip Address from Client?
We can use the code HttpContext.Connection.RemoteIpAddress; to get the client IP address, i have tested your code and it worked fine.
Please do below troubleshoots:
1.Ensure we call method of UseForwardedHeaders before using other middlewares.
2.Forwarded Headers Middleware isn't enabled by default. Forwarded Headers Middleware must be enabled for an app to process forwarded headers with UseForwardedHeaders.
As a additional workaround, We can use Request.Headers["X-Forwarded-For"] to get the IP address of client rather than X-Client-IP.
We can do as follows:
string IpAddress = null;
if (Request.Headers["X-Forwarded-For"].ToString().IndexOf(",") > 0)
{
IpAddress = Request.Headers["X-Forwarded-For"].ToString().Split(',')[0];
}
else
{
IpAddress = Request.Headers["X-Forwarded-For"].ToString();
}

How can I get the correct ip address of the visitor in node.js? (I tried node-ip and it doesn't work)

I'm using a node ip taken from here: https://github.com/indutny/node-ip
In my webservice I did a simple thing:
var ip = require('ip');
module.exports = function(app) {
app.get('/gps', function (req, res) {
console.log(ip.address());
}
}
I deployed it to my amazon aws account and now whoever enters the page - I constantly see the same ip address in my console log - 172.31.46.96. I tried to check what is this ip (possible option is that it is related to my amazon aws service?), but who.is does not bring the answer.
How should I change my code to see every visitor's ip address instead?
You're most likely getting an IP of an internal load balancer/proxy and you'll need to configure express to handle that.
This is a good place to start.
Use req.connection.remoteAddress to get the ip of your user.

GeoIP in localhost

I am using GeoIP to get country from client address but it returns null
ip = (req.headers['x-forwarded-for'] || '').split(',')[0] || req.connection.remoteAddress;
country = geoip.lookup(ip).country;
I think this is because I am using localhost since the detected ip is 127.0.1.
How to solve that?
You can use services like http://fugal.net/ip.cgi or http://ifconfig.me/ip to get your external IP address via http.get() or run a shell command using child_process.exec() (like $ ip on OS X), but it's not a cross-platform solution. I don't think it's possible to get local machine external IP using http.IncomingMessage object (req) or os.networkInterfaces() method.
In your case, I would default to some country/latitude/whatever you need in case of null from geoip.lookup(), at least in development environment.
var geo = geoip.lookup(ip);
var country = geo ? geo.country : 'US';

How to get the correct IP address of a client into a Node socket.io app hosted on Heroku?

I recently hosted my first Node app using Express and socket.io on Heroku and need to find the client's IP address. So far I've tried socket.manager.handshaken[socket.id].address, socket.handshake.address and socket.connection.address , neither of which give the correct address.
App: http://nes-chat.herokuapp.com/ (also contains a link to GitHub repo)
To view IPs of connected users: http://nes-chat.herokuapp.com/users
Anyone know what the problem is?
The client IP address is passed in the X-Forwarded-For HTTP header. I haven't tested, but it looks like socket.io already takes this into account when determining the client IP.
You should also be able to just grab it yourself, here's a guide:
function getClientIp(req) {
var ipAddress;
// Amazon EC2 / Heroku workaround to get real client IP
var forwardedIpsStr = req.header('x-forwarded-for');
if (forwardedIpsStr) {
// 'x-forwarded-for' header may return multiple IP addresses in
// the format: "client IP, proxy 1 IP, proxy 2 IP" so take the
// the first one
var forwardedIps = forwardedIpsStr.split(',');
ipAddress = forwardedIps[0];
}
if (!ipAddress) {
// Ensure getting client IP address still works in
// development environment
ipAddress = req.connection.remoteAddress;
}
return ipAddress;
};
You can do it in one line.
function getClientIp(req) {
// The X-Forwarded-For request header helps you identify the IP address of a client when you use HTTP/HTTPS load balancer.
// http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/TerminologyandKeyConcepts.html#x-forwarded-for
// If the value were "client, proxy1, proxy2" you would receive the array ["client", "proxy1", "proxy2"]
// http://expressjs.com/4x/api.html#req.ips
var ip = req.headers['x-forwarded-for'] ? req.headers['x-forwarded-for'].split(',')[0] : req.connection.remoteAddress;
console.log('IP: ', ip);
}
I like to add this to middleware and attach the IP to the request as my own custom object.
The below worked for me.
Var client = require('socket.io').listen(8080).sockets;
client.on('connection',function(socket){
var clientIpAddress= socket.request.socket.remoteAddress;
});

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