Errors

TypeError: Cannot call method 'toLowerCase' of undefined    at IncomingMessage._addHeaderLine (http.js:383:17)
    at HTTPParser.parserOnMessageComplete [as onMessageComplete] (http.js:137:23)
    at Socket.socketOnData [as ondata] (http.js:1367:20)
    at TCP.onread (net.js:403:27)

TypeError: Cannot call method 'apply' of undefined
    at Socket.EventEmitter.emit (events.js:126:20)
    at Socket._destroy.destroyed (net.js:357:10)
    at process.startup.processNextTick.process._tickCallback (node.js:244:9)

gistfile1.txt

var http = require("http")
var request = require("request");

var url = "http://short.co/97k9"
var headers = {'User-Agent': 'AppleWebKit/525.13 (KHTML, like Gecko) Safari/525.13.',
               'Connection': 'close'}

function run() {
  request.head({url:url, headers:headers, followRedirect:false},
               function(err, res) {
                 JSON.stringify(res);
                 process.nextTick(run);
               });
}

run();