Node.js connect create auth server

function auth(req,res,next){
    function send401(){
        res.writeHead(401,{'WWW-Authenticate':'Basic'});
        res.end();//from   www  . j  ava  2s. c o  m
    }

    var authHeader = req.headers.authorization;
    if (!authHeader){
        send401();
        return;
    }

    var auth = new Buffer(authHeader.split(' ')[1],'base64').toString().split(':');
    var user = auth[0];
    var pass = auth[1];

    if (user = 'foo' && pass == 'bar'){
        next(); //all good
    }
    else{
        send401();
    }
}

var connect = require('connect');

connect()
    .use(auth)
    .use(function(req,res){
        res.end('Authorized!');
    }).listen(3000);

console.log('Server is running on port 3000');