pubnub federated game servers

gameServer.js

// gameServer.js
// npm install --save pubnub
// http://www.pubnub.com/docs/javascript/javascript-sdk.html

var j$ = JSON.stringify;
var jP = JSON.parse;
var game = require('./game.js'); // Local game server
var queue = []; // Global matchmaking queue

var pubnub = require("pubnub")({
  ssl: true, publish_key: "demo", subscribe_key: "demo"
});

pubnub.publish({
  channel : "server.connected",
  message : j$({
    ip: process.env['IP'],
    port: process.env['PORT'],
    country: process.env['COUNTRY'],
  })
});

pubnub.subscribe({
  channel  : "queue.update",
  callback : function(q){
    queue = jP(q);
    game.updateState();
  },
});

game.on('player.requestMatch', function(event){
  pubnub.publish({
    channel : "match.request",
    message : j$(event.player),
  });
});

queueServer.js

// queueServer.js
var j$ = JSON.stringify;
var jP = JSON.parse;
var matchmaking = require('./match.js');

queue = [];

pubnub.subscribe(
  channel: 'match.request',
  callback: function(player){
    var newQueue = matchmaking.placePlayer(queue, player);
    queue = newQueue;
    pubnub.publish({
      channel:'queue.update',
      message: j$(newQueue),
    })
  },
)