Getting Client information in NodeJS

clientInfoInNode.js

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
}