demos/Demo/Day2/3-net/1.tcpserver.js

var net = require('net');

var server = net.createServer(function(c) { 
  console.log('client connected');
  c.on('data', function(data) {
  console.log(data.toString());
  });
  c.on('close', function() {
    console.log('client disconnected');
  });
  c.write('Hello, I am server');
 });
 
server.listen(8124, function() { 
  console.log('server started');
});