Node.js错误:使用http.request时连接ECONNREFUSED

我正在对Node.js脚本进行故障排除,并且已经删除了几乎所有代码,但仍然能够重现以下错误:

{ 
  [Error: connect ECONNREFUSED]
  stack: 'Error: connect ECONNREFUSED 
          at exports._errnoException (util.js:682:11) 
          at Object.afterConnect [as oncomplete] (net.js:947:19)',
  code: 'ECONNREFUSED',
  errno: 'ECONNREFUSED',
  syscall: 'connect' 
}

整个脚本是:

var http = require('http');

http.get("http://api.hostip.info/get_json.php", function(res) {
    console.log("Received response: " + res.statusCode);
});

var req = http.request(function(res) {
    console.log("Request began");
    var output = '';

    res.on('data', function (chunk) {
        output += chunk;
    });

    res.on('end', function () {
        console.log('Request complete:');
        console.log(output);
    });
});

req.on('error', function (err) {
    console.log(err);
    //console.log('error: ' + err.message);
});

req.end();
console.log("Script complete");

我相信这是代码中某处的一个简单错误,但一直无法识别问题？