Server file for drawing app

server.js

var app = require('express')();
var http = require('http').Server(app);
var io = require('socket.io')(http);

app.get('/', function(req, res){
    res.sendFile(__dirname + '/index.html');
});


io.on('connection', function(socket){
  console.log('a user connected');
  socket.on('drawIn', function(clickX,clickY,dragging){//recieve message
       console.log('message: ' + clickX,clickY,dragging);
       io.emit('drawOut', clickX,clickY,dragging);//send message
  });
  socket.on('disconnect', function(){
      console.log('user disconnected');
  });
});




http.listen(3000, function(){
  console.log('listening on *:3000');
});