client.js

var net = require('net');
var data = Array(1024).join(' ');

function go() {
  var s = null;
  s = net.connect(8000, '127.0.0.1', function() {
    setInterval(function() {
      console.log(s.write(data));
    }, 1000);
  });
};

var i;
for (i = 0; i<2000; i++) {
  go();
}

server.js

var net = require('net');
var i = 0;
var server = net.createServer(function (s) {
  s.write("welcome!\n");
  console.log('got client',++i);
  // uncomment this!
  // s.on('data',function(){});
})
server.listen(8000);
console.log('127.0.0.1:8000');