node.js socket.io listener not working correctly

I have a chat with private message but the private message doesnt work. This is the app.js

var express = require('express'),http = require('http');
var app = express();
var server = http.createServer(app);
console.log("Hola");
app.set('views',__dirname + '/views');

        app.use(express.static(__dirname));

app.get('/',function(req,res){
        res.render('index.jade',{layout:false});
});
app.post('/', function(req, res) {
    if (req.session.logged)
    {
        res.send('Welcome back!');
        console.log("Welcome back!");
    }
    else
    {
        req.session.logged = true;
        res.send('Welcome!');
        console.log("Welcome");
    }
});
server.listen(1080);

function tstamp() {
  var currentTime = new Date();
  var days = new Array('Dom', 'Lun', 'Mar', 'Mie', 'Jue', 'Vie', 'Sab');
  var day = currentTime.getDay();
  var hours = currentTime.getHours();
  var minutes = currentTime.getMinutes();
  if (minutes < 10) {
    minutes = "0" + minutes;
  }
  if (hours > 11) {
    var ap = 'p';
  }
  else {
    var ap = 'a';
  }
  if (hours > 12) {
    hours = hours - 12;
  }

  return "["+ days[day] + " " + hours + ":" + minutes + ap + "m] ";
}

//websockets
var io = require('socket.io').listen(server);
var usuariosConectados = {};
var usuariosId ={};
io.sockets.on('connection',function(socket){
        socket.on('enviarNombre',function(dato){
                if(usuariosConectados[dato])
                        socket.emit('errorName');
                else
                        {
                                // store the nickname in the socket session for this client
                                socket.nickname = dato;
                                //console.log("El usuario es: " + dato);
                                usuariosConectados[dato] = socket.nickname;
                                usuariosId[dato] = socket.id;
                        }
                        sId = [dato,usuariosId];
                        data = [dato,usuariosConectados];
                        io.sockets.emit('mensaje',data);
        });
        socket.on('enviarMensaje',function(mensaje){
                var data = [socket.nickname, mensaje];
                io.sockets.emit('newMessage',data);
        });
        socket.on('mensajePrivado',function(targetUser,msg) {
                //console.log(sId[1][targetUser]);
                //console.log(msg);
                //console.log(socket.id);
                console.log(tstamp());
        io.sockets.socket(sId[1][targetUser]).emit('newPrivado', tstamp(), socket.nickname, targetUser, msg);
        io.sockets.socket(socket.id).emit('newPrivadoSender', tstamp(), socket.nickname, targetUser, msg);
   });
        socket.on('disconnect',function(){
                console.log("Entro a disconnect");
                delete usuariosConectados[socket.nickname];
                data = [usuariosConectados,socket.nickname];
                io.sockets.emit('usuarioDesconectado',data);
        });
});

The problem is when i use the listener "mensajePrivado" it never get to there and i dont know why. The socket.on('enviarMensaje') listener works fine.

I call it like this:

function sendPrivateMessage (targetUser)
{
        console.log("entro en sendPrivateMessage");
        var privateMsg = $('#'+ targetUser + 'privateMsg').val();
        //verificamos que no tenga scripts
        if((privateMsg.indexOf("<") != -1))
        {
                alert("Mensaje incorrecto");
        }
        else if((privateMsg.indexOf(">") != -1))
        {
                alert("Mensaje incorrecto");
        }
        else if((privateMsg.indexOf(";") != -1))
        {
                alert("Mensaje incorrecto");
        }
        else
        {
                $('#'+ targetUser + 'privateMsg').val("");
                console.log(privateMsg);
                console.log(targetUser);
                websocket.emit('mensajePrivado', targetUser, privateMsg);
        }
}

Also when i inspect elements in the Chrome browser i get the following error
failed: Error during WebSocket handshake: 'Connection' header value must contain 'Upgrade'

How can i fix all this?

Thanks in advance!

via user995691