According to socket.io examples:

> 
> To broadcast, simply add a `broadcast` flag to `emit` and `send` method calls. Broadcasting means sending a message to everyone else except for the socket that starts it.
> 
> 
> 

```
var io = require('socket.io').listen(80);

io.sockets.on('connection', function (socket) {
  socket.broadcast.emit('user connected');
});

```

I tried to combine this with the new socket.io namsepace feature, so I got this:

```
var chat = ioserver.of('/chat');

chat.on('connection', function (socket) {
      console.log('chat connection');   
      socket.on('message', function (msg) {
        console.log(msg);  
        chat.send(msg);
      });
  });

```

This works fine, everyone on the chat channel (and no other channels) gets the message. But the sender also gets it.
So I tried to do the following:

```
chat.on('connection', function (socket) {
      console.log('chat connection');   
      socket.on('message', function (msg) {
        console.log(msg);  
        chat.broadcast.send(msg);
      });
  });

```

and got an Exception: 'Cannot call method 'send' of undefined.'
Ok, so I thought, that broadcast is the feature of a single socket (it feels a bit weird though - how a single socket can brodacast to all other...).
 So I tried:

```
chat.on('connection', function (socket) {
      console.log('chat connection');   
      socket.on('message', function (msg) {
        console.log(msg);  
        socket.broadcast.send(msg);
      });
  });

```

but now it was even worse - no one received the message, not even the sender. Anyway, it was what I logically expected - one socket cannot broadcast something through itself. And no exceptions this time, so broadcast is defined for the socket.

If I do:

```
chat.on('connection', function (socket) {
      console.log('chat connection');   
      socket.on('message', function (msg) {
        console.log(msg);  
        socket.send(msg);
      });
  });

```

then only the original sender gets the message, and that is again pretty logical - I used the 'send' of the client-related socket.

**So the question is: what is the correct way to use the broadcast feature?** 

Maybe the developer of socket.io made a mistake and added the broadcast feature to the wrong object (as I understand, it should be the feature of the namespace but now it is defined only for the socket)?