calling function in Node.js

var http = require("http");
var url = require("url");
var path = require("path");
var mongo = require("mongodb");

var Server = mongo.Server,
    Db = mongo.Db,
    BSON = mongo.BSONPure;
var server = new Server('localhost', 27017, {auto_reconnect: true});
db = new Db('gamedb', server);
db.open(function(err, db) {

  if(!err) {
  console.log("Connected to gameapp database");
  db.collection('games',{strict: true},function(err, collection){

    if(err) {
      console.log("cant connect to db");
    }


  });


}

});


 var findAll = function(req, res){
          db.collection('games', function(err, collection){
            collection.find().limit(10).toArray(function(err,items){
              res.send(items);
            });

        });

        };

        http.createServer(function (req, res) {

          if(req.url == "/games" & req.method == "GET"){
            res.writeHead(200, {'Content-Type' : 'text/plain'});
            findAll(req, res);


            res.end('end request\n');
          }
        else {
          res.writeHead(200, {'Content-Type' : 'text/plain'});
          res.end('HI\n');
        }

        }).listen(3000, '127.0.0.1');
        console.log('Server running at http://127.0.0.1:3000/');

I keep trying to call findAll() in my create server function but I always get an error message saying "undefined is not a function". I double checked my syntax and I can't find any errors. any insight?