Socket.io 1.0 Middleware join room not working properly

Question

Socket.io 1.0 Middleware join room not working properly

I tried to add new socket to some rooms in a middleware, but it seems not working while a first emit haven't be done for a socket(client side). When a socket (client side) send a 'message' event it will then work and be part of the room.
Is it a normal behavior? Am I mandatory to join room in 'connection' event?

app.js (server side)

var app = require('http').createServer(function (req, res){
  res.end('no rest');
});

var io = require('socket.io')(app);
app.listen(7076);


io.use(function(socket, next){
  socket.join('toto');
  next();
});

io.on('connection', function (socket) {
  socket.on('message', function (data) {
    socket.to('toto').emit('message', data);
  });
});

node.js
join
socket.io
middleware

Answer 1

~~According to the documentation, socket.to('toto').emit... syntax is not correct~~. You should use one of the following forms:

send everyone in "toto" room:

io.to('toto').emit('message', data);

send everyone in "toto" room except the sender:

socket.broadcast.to('toto').emit('message', data);

Answer 2

In fact the problem wasn't on the server side at all... It was my client that i didn't describe. When clicked on a button to send a message here is the function called

function messageManagement(cb)
    {
        var message = $('#message_text').val();
        if (!message || message.length == 0)
            message = 'I am watching you';
        socketClient.emit('message', {message:message});
        socketClient.on('message', function (data){
            console.log(data.messsage);
            drawMessage(data);
        });
    }

As you can see each time the client emit a message it also register to the response event. So each time I emit a message a registered one more time to same event... It was messy so i changed this and it worked..