How to update socket object for all clients in roo

Question

io.sockets.on('connection', function(socket) {
    socket.object = socket.id;

    socket.on('updateObject', function(data) {
        // How to update socket.object here for all clients?
    });
});

How to do it?

Answer 1

For the users using Socket.IO versions 1.0 or above this is the updated code for doing so.

Code to update socket object for all clients in a room

var clients = io.sockets.adapter.rooms['Room Name'].sockets;   

//to get the number of clients
var numClients = (typeof clients !== 'undefined') ? Object.keys(clients).length : 0;

for (var clientId in clients ) {

     //this is the socket of each client in the room.
     var clientSocket = io.sockets.connected[clientId];

     //you can do whatever you need with this
     clientSocket.emit('new event', "Updates");

}

Answer 2

Please note that this function is not available anymore in socket.io versions higher then 1.0, it is recommended to keep a array of your socket.id's so you can iterate over them if need be. example by ynos1234

You can achieve this with the forEach function:

io.sockets.on('connection', function(socket) {
socket.object = socket.id;

    socket.on('updateObject', function(data) {
        io.sockets.clients('room').forEach(function (socket, data) {
            // goes through all clients in room 'room' and lets you update their socket objects
        });
    });
});