Getting Client information in NodeJS

To get information about your client in Node.JS (because it is slightly different than in PHP).

Here’s an example snippet from onRequest that you could use in your server start function.

(Gist here.)

function onRequest(request, response) {
var clientIPaddr = null,
clientProxy = null;

// is client going through a proxy?
if (request.headers[‘via’]) { // yes
clientIPaddr = request.headers[‘x-forwarded-for’];
clientProxy = request.headers[‘via’];
} else { // no
clientIPaddr = request.connection.remoteAddress;
clientProxy = “none”;
}
var pathname = url.parse(request.url).pathname;
if (pathname!=”/favicon.ico”) {
console.log(“>> Request for “+pathname);
console.log(“>>> Client : “+request.headers[‘user-agent’]);
console.log(“>>> IP address “+clientIPaddr+” via proxy “+clientProxy);
}

// rest of request handling code
}

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