This Readme corresponds to the upcoming 1.0 release. Please refer to http://socket.io for the current 0.9.x documentation.

socket.io-client

How to use

Standalone

A standalone build of socket.io-client is exposed automatically by the socket.io server as /socket.io/socket.io.js. Alternatively you can serve the file socket.io-client.js found at the root of this repository.

<script src="/socket.io/socket.io.js"></script>
<script>
  var socket = io('http://localhost');
  socket.on('connect', function(){
    socket.on('event', function(data){});
    socket.on('disconnect', function(){});
  });
</script>

Component

Socket.IO is a component, which means you can include it by using require on the browser:

var socket = require('socket.io')('http://localhost');
socket.on('connect', function(){
  socket.on('event', function(data){});
  socket.on('disconnect', fucntion(){});
});

Node.JS

Add socket.io-client to your package.json and then:

var socket = require('socket.io-client')('http://localhost');
socket.on('connect', function(){
  socket.on('event', function(data){});
  socket.on('disconnect', fucntion(){});
});

API

IO(url:String, opts:Object):Socket

Exposed as the io namespace in the standalone build, or the result of calling require('socket.io-client').

When called, it creates a new Manager for the given URL, and attempts to reuse an existing Manager for subsequent calls, unless the multiplex option is passed with false.

The rest of the options are passed to the Manager constructor (see below for details).

A Socket instance is returned for the namespace specified by the pathname in the URL, defaulting to /. For example, if the url is http://localhost/users, a transport connection will be established to http://localhost and a Socket.IO connection will be established to /users.

IO#protocol

Socket.io protocol revision number this client works with.

IO#Socket

Reference to the Socket constructor.

IO#Manager

Reference to the Manager constructor.

IO#Emitter

Reference to the Emitter constructor.

Manager(url:String, opts:Object)

A Manager represents a connection to a given Socket.IO server. One or more Socket instances are associated with the manager. The manager can be accessed through the io property of each Socket instance.

The opts are also passed to engine.io upon initialization of the underlying Socket.

• connect. Fired upon a succesful connection.
• connect_error. Fired upon a connection error. Parameters:
  • Object error object
• connect_timeout. Fired upon a connection timeout.
• reconnect. Fired upon a successful reconnection. Parameters:
  • Number reconnection attempt number
• reconnect_error. Fired upon a reconnection attempt error. Parameters:
  • Object error object
• reconnect_failed

Socket

Events

• connect. Fired upon connecting.
• error. Fired upon a connection error Parameters:
  • Object error data
• disconnect. Fired upon a disconnection.

License

MIT