Ping & IP Hashing w/ Websockets

/*
Ping & IP Hashing w/ Websockets
@author  Blackthorn Yugen
@version 0.3
@date    Febuary 27, 2015
*/
var util = require("util"),
    io = require("socket.io")(),
    port = process.env.PORT || 8000;

var AES = require("crypto-js/aes");
var SHA256 = require("crypto-js/sha256");

var players = [], // I say players because I plan on making this into a small game
    events = 0; // Keep track of events

// Do this each time a client connects //
io.on('connection', function(client){
    util.log("Connection: "+ client.id);
    players.push(client);
    client.on("disconnect", onClientDisconnect);
    client.on("ping", onClientPing);
    client.on("goodbye", onPart);
    client.on("msg", onMessage);
    client.on("evenOdd", checkEvenOdd);
    client.on("playerHash", onPlayerHash);

    var ns = io.of("/");
    for(x in ns.connected) {
        var player = ns.connected[x];
        if(player.id !== client.id) {
            var response = getPlayerHash(client.id);
            response.isNew = true;
            player.emit("newPlayer", response);
        }
    }
});

function onClientPing(data) {
    events++;
    var ns = io.of("/"); // the root namespace
    this.emit('pong', { // Send a reply to the ping; include some server data.
        message: 'This message came from Node.js!',
        uptime: Math.round(process.uptime()),
        players: Object.keys(ns.connected),
        connected: Object.keys(ns.connected).length,
        numEvents:events});
    util.log("Ping!");
    if(data) util.log(data);
};

function onClientDisconnect(client) {
    events++;
    players.splice(players.indexOf(client.id),1);
    util.log("Player has disconnected: "+this.id);

    var ns = io.of("/");
    for(x in ns.connected) {
        var player = ns.connected[x];
        if(player.id !== this.id) {
            player.emit("playerDisconnected", this.id);
        }
    }
};

function onPart(data, ack){
    events++;
    ack("Goodbye " +this.id+ "! \n  --nodejs");
    this.disconnect();
    if(data) util.log(data);
}

function onMessage(data, ack) {
    events++;
    if (ack) next(data+"?!?");
};

function checkEvenOdd(input, ack) {
    events++;
    if(isNaN(input)){
        ack('Not a number.');
    } else if (+input % 2 === 0) {
        ack('even');
    } else {
        ack('odd');
    }
};

function onPlayerHash(data, ack) {
    events++;
    var response = getPlayerHash(data);
    if (this.id == data) response.isMe = true;
    ack(response);
}

function getPlayerHash(playerId){
    var hashObject = {};
    var ns = io.of("/");
    var player = ns.connected[playerId];
    if(player){
        var hash = SHA256(player.conn.remoteAddress);
        hashObject.hash = parseInt(hash, 16) % Math.pow(10,8);
        hashObject.identCode = player.id;
    } else {
        hashObject.error = playerId + " is not a valid player id.";
    }
    return hashObject;
}

io.listen(port);