Why can't create a TCP client?

Question

JavaScript

var net = require('net'),
    clientSocket = new net.Socket();

clientSocket.setEncoding('utf8');

clientSocket.connect('8080', 'localhost', function(){
  console.log('Connected!');
  clientSocket.write('Hello!');
});

clientSocket.on('data', function(data) {
  console.log('data: ' + data);
});

clientSocket.on('close', function() {
  console.log('Bye!');
});

Empirically revealed that the error is in the call to the connect () method. But where exactly, I can not understand

Answer 1

There, in the function callback, there is an argument responsible for describing errors. Use it to understand why.
Also make sure that the server is up on the right port and on the right host. Well, that he is raised. The easiest way is through netcat.

Answer 2

If in connect, then either in the IP address, try '127.0.0.1', or in the port, but rather the first, you can try to do the same in some other language, this will help "localize" the problem.