Node.js get client IP address

ip.js

// snippet taken from http://catapulty.tumblr.com/post/8303749793/heroku-and-node-js-how-to-get-the-client-ip-address
function getClientIp(req) {
  var ipAddress;
  // The request may be forwarded from local web server.
  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) {
    // If request was not forwarded
    ipAddress = req.connection.remoteAddress;
  }
  return ipAddress;
};

X-Forwarded-For? You're checking easily spoofed headers to get an IP?

If you install gentoo you don't need all of this

hi
Can we to find the user's IP telegram?

it is hacked. no use

What should I pass as the "req" parameter?