Socket.io joining a room

_README.md

I client connects to a sever specifying a room they wish to join, that client is then binded to that one and only room.

The server broadcasts a event to the room, forwarding the message on to any other connected clients.

In the below example connected_client.js is listening to any messages, and will log the output.

[message]: {"room": "anything", "greeting": "Hello world"}

client.js

var socket = io.connect();
socket.emit('message', {event: 'something', data: {room: 'anything', greeting: 'Hello world'}});

connected_client.js

var socket = io.connect();
socket.on('message', function(e){
    console.log('[message]: ' + JSON.stringify(e));
});

server.js

var io = require('socket.io');

io.listen(app).on('connection', function(socket) {

    function joinRoom(socket, room) {
        if (socket.room) {
            socket.leave(socket.room);
        }
        socket.join(room);
        socket.room = room;
        console.info(socket.id + ' joined room ' + room, socket.room);
    }

    socket.on('message', function(data, callback) {
        if (data.event === 'connected' && data.data.room) {
            socket.join(data.data.room);
            console.log(socket.id + ' Joined Room ' + data.data.room);
            socket.room = data.data.room // stash the room ID on the socket object to make it easy to recall.
        }
        socket.broadcast.to(socket.room).emit('message', data);

    });
});

How to get current room name here?

Look like joinRoom function in server.js not being called from anywhere.

@audreyshedko you're right. This is 8-year-old code.
I suspect the function was intended to be called on line 16-18.

@audreyshedko you're right. This is 8-year-old code.
I suspect the function was intended to be called on line 16-18.

Nice example, anyway.