node.js client.request generating EADDRINUSE

fail.js

var http = require('http'),
  util = require('util');

var delta = 0, total = 0;
var server = http.createClient(8000, '127.0.0.1');

(function get() {
  var request = server.request('/404', {host:'127.0.0.1'});
  request.end();

  request.on('response', function(response) {
    delta++;
    total++;
    process.nextTick(get);
  });
})();

setInterval(function() {
  util.log('requested: '+delta+' total: '+total);
  delta = 0;
},1000);

gistfile2.txt

29 Nov 05:02:35 - requested: 1529 total: 1529
29 Nov 05:02:36 - requested: 1482 total: 3011
29 Nov 05:02:37 - requested: 1435 total: 4446
29 Nov 05:02:38 - requested: 1474 total: 5920
29 Nov 05:02:39 - requested: 1385 total: 7305
29 Nov 05:02:40 - requested: 1241 total: 8546
29 Nov 05:02:41 - requested: 1486 total: 10032
29 Nov 05:02:42 - requested: 1485 total: 11517
29 Nov 05:02:43 - requested: 1454 total: 12971
29 Nov 05:02:44 - requested: 1464 total: 14435
29 Nov 05:02:45 - requested: 1495 total: 15930

node.js:59
    throw e; // process.nextTick error, or 'error' event on first tick
    ^
Error: EADDRINUSE, Address already in use
    at doConnect (net.js:446:19)
    at net.js:602:9
    at Object.lookup (dns.js:133:5)
    at Client.connect (net.js:596:20)
    at Client._reconnect (http.js:1022:10)
    at Client.<anonymous> (http.js:927:12)
    at Client.emit (events.js:27:15)
    at Array.<anonymous> (net.js:685:12)
    at EventEmitter._tickCallback (node.js:51:22)