Never send Event/Message from client (iOS) to server (Node.js)

[LokeshPatel]

I have tried lot's but not getting success, please suggest me how to send messages event from iOS client to server (Node.js).
I have used below code for Client side:

Connect host working proper:

    socketIO = [[SocketIO alloc] initWithDelegate:self];
    [socketIO connectToHost:HOSTURL onPort:PORT];

Send message/event not working .
Event:

 NSMutableDictionary *dict = [NSMutableDictionary dictionary];
    [dict setObject:@"123124238029850485" forKey:@"id"];
    [socketIO sendEvent:@"message" withData:dict];

Message:
[socketIO sendMessage:@"Hello abc 12345"];

Server side code: (Node.js)

var app = require('http').createServer(handler)
var io = require('socket.io')(app);
var fs = require('fs');
var users={};
var clients = {};
function handler (req, res) {
    var filePath = '.' + req.url;
  fs.readFile(filePath,//__dirname + '/index.html',
  function (err, data) {
      console.log("connnected from ios")
    if (err) {
      res.writeHead(500);
      return res.end('Error loading index.html');
    }
    res.writeHead(200);
    res.end(data);
  });
}
app.addListener('request', function(req,res){
    console.log(req.headers);
});
app.listen(8080);
io.on('connection', function (socket) {
   socket.on('message', function (data) {
     console.log(" message  ===== " + data);
});
  socket.on('disconnect', function() {
    console.log("Disconnected >"+socket.id);
  });

});

Thanks,
Lokesh Patel