CODEWITHSUNDEEP
socket.io
Dries Cleymans
Dries Cleymans

Reputation: 890

socket.io 2.0 get connected clients in a room

How can you retrieve all the connected clients in a room using socket.io 2.0

I already tried the solution in a similar question: https://stackoverflow.com/a/45160538/2189845

var sockets = io.in("room_name")
 Object.keys(sockets.sockets).forEach((item) => {
 console.log("TODO: Item:", sockets.sockets[item].id)            
})

But this loops over all socket connections, regardless of the room. So the code above gives the same result as:

Object.keys(io.sockets.sockets).forEach((item) => {
    console.log("general socket: Item:", item);
});

Upvotes: 2

Views: 5824

Answers (3)

Rishabh Rawat
Rishabh Rawat

Reputation: 1194

Check this code which is run in socket.io 2.0 

  io.sockets.in(roomID).clients(function(err, clients) {
                            clients.forEach(client => {
                                let user = io.sockets.connected[client];
                                console.log("Connected Client ", user.displayName);
                            });
                        });

Upvotes: 0

kevzettler
kevzettler

Reputation: 5213

Unfortunately, this answer doesn't completely satisfy OPs question. If you are using socket.io-redis to manage socket connections you can get connected clients like

io.of('/').adapter.clients((err, clients) => {
  console.log(clients); // an array containing all connected socket ids
});

io.of('/').adapter.clients(['room1', 'room2'], (err, clients) => {
  console.log(clients); // an array containing socket ids in 'room1' and/or 'room2'
});

// you can also use

io.in('room3').clients((err, clients) => {
  console.log(clients); // an array containing socket ids in 'room3'
});

this is from : https://github.com/socketio/socket.io-redis#redisadapterclientsroomsarray-fnfunction

Upvotes: 2

wrangler
wrangler

Reputation: 3576

Try:

io.sockets.clients('room_name').forEach(function(item) {
    console.log(item.id);//any property of socket you want to print
});

Or you could try:

var clients = io.sockets.adapter.rooms['room_name'].sockets;
for (var clientId in clients ) {

     //this is the socket of each client in the room.
     var SocketofClient = io.sockets.connected[clientId];
     console.log(SocketofClient.id);
}

Upvotes: 0

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