text: var common = require('../common');
  var assert = require('assert');
  var net = require('net');
  var closed = false;
  var server = net.createServer();
  
  // unref before listening
  server.unref();
  server.listen();
  
  // If the timeout fires, that means the server held the event loop open
  // and the unref() was not persistent. Close the server and fail the test.
  setTimeout(function() {
    closed = true;
    server.close();
  }, 1000).unref();
  
  process.on('exit', function() {
    assert.strictEqual(closed, false, 'server should not hold loop open');
  });
  