test.js

var net = require('net');

var connectTimes = [];

function connect() {
  var socket = new net.Socket({type: 'tcp4'});
  var time = Date.now();
  socket.setTimeout(30000);
  //socket.connect(5015, '66.228.62.138');
  socket.connect(5012, 'fragola.sfarm1.com');
  //socket.connect(5013, 'localhost');
  socket.on('connect', function() {
    process.stdout.write('+');
    connectTimes.push(Date.now() - time);
    socket.end('<policy-file-request />' + "\0");
    //socket.end('<auth tableid="144265" userid="121845" verify="cgnycuewiuajurbulpilxamvvrtzgdckcipsdqqiszuxrcdwxel" />' + "\0");
  });
  socket.on('data', function(data) {
    process.stdout.write('reply');
  });
  socket.on('close', function(had_error) {
    if (had_error) console.log('close. had error: ' + had_error);
  });
  socket.on('error', function(err) {
    console.log('error:' + err.inspect);
  });
  socket.on('timeout', function() {
    process.stdout.write('timeout');
    socket.end();
  });
}

process.on('exit', function() {
  console.log('exit');
  console.log('connections: ' + connectTimes.length);
  var mean = 0;
  connectTimes.forEach(function(ct) { mean += ct });
  if (connectTimes.length > 0)
    mean = mean / connectTimes.length;
  console.log('connection mean time' + mean);
});


var count = 0;
;(function schedule() {
  count ++;
  connect();
  if (count < 1000) setTimeout(schedule, 100);
})()