Difference between OSX and Linux on Node 0.4.12

httptest.js

// Illustrates a difference in behavior between OSX and Linux 
// (tested on OSX and Arch)

var http = require('http');

var server = http.createServer();

server.on('request', function (req, res) {
  res.writeHead(200);
  res.end('Hello world.');
});

server.listen(16000);

function makeRequest() {
  var req = http.request({
    host: 'localhost',
    port: 16000,
    path: '/'
  }, function (res) {

  var buf = '';

  res.on('data', function (chunk) {
    console.log('REQUEST CHUNK', chunk.toString());
    buf += chunk;
  });

  res.on('end', function () {
    console.log('END REQUEST', buf);
    });
  });

  req.on('error', function (err) {
    console.log(err);
    throw err;
  });

  req.end();
}

// This works on OSX without process.nextTick()
// but fails on Linux with a Error: ECONNREFUSED, Connection refused
// Uncommenting delays the client request till nextTick(), which
// resolves the ECONNREFUSED

//process.nextTick(function() {
  makeRequest();
//});