Socket.IO on PubNub Network
PubNub and Socket.IO are two separate technologies, independent yet connected by the open mobile web.
PubNub Data Streaming Network
PubNub is a globally distributed Data Stream Network. Available are simple primitives that make any real-time service possible with High Reliability and Globally Distributed Data Centers.
Socket.IO Realtime Framework
Socket.IO is a framework with abstracted concepts that make network communication a little more robust with some great features and use patterns to make it easy. Consider Socket.IO is to Networking as jQuery is to HTML/JavaScript. PubNub is a TCP Socket Cloud. Socket.IO is a framework that has design patterns. Socket.IO is a nice framework on top of PubNub that gives you the some pretty great and easy-to-use design patterns. Socket.IO also has a server-component written in Node.JS which requires you to host your own cluster of servers to operate. Putting Socket.IO on PubNub removes the need to operate and run your own server cluster.
Also consider that the Socket.IO SDK for PubNub is designed for people that started with socket.io but want to migrate to PubNub. Otherwise, there is no requirement to use socket.io library if you are starting with PubNub first.
PubNub Removes the need for a server back-end so you can focus on building your apps.
Also those familiar with Socket.IO API will easily be able to port their existing JavaScript-based Socket.IO code directly onto PubNub - https://github.com/pubnub/javascript/tree/master/socket.io#how-to-use
Socket.IO Get Started Quickly
Socket.IO allows you to emit and receive custom events. Reserved Events are: connect, message, disconnect, reconnect, ping, join and leave.
Sending and receiving events.
<script src="http://cdn.pubnub.com/socket.io.min.js"></script>
<script>
(function(){
// IMPORTANT: PubNub Setup with API Keys
var pubnub_setup = {
channel : 'my_mobile_app',
publish_key : 'demo',
subscribe_key : 'demo'
};
var socket = io.connect( 'http://pubsub.pubnub.com', pubnub_setup );
socket.on( 'connect', function() {
console.log('Connection Established! Ready to send/receive data!');
socket.send('my message here');
socket.send(1234567);
socket.send([1,2,3,4,5]);
socket.send({ apples : 'bananas' });
} );
socket.on( 'message', function(message) {
console.log(message);
} );
socket.on( 'disconnect', function() {
console.log('my connection dropped');
} );
// Extra event in Socket.IO provided by PubNub
socket.on( 'reconnect', function() {
console.log('my connection has been restored!');
} );
})();
</script>
