gistfile1.js

function getHalResource(req, path, callback) {
  var headers = {};
  headers['Content-Type'] = 'application/hal+json';

  var options = {
    method: 'GET',
    headers: headers
  }

  requestResource(req, path, options, callback);
}

function requestResource(req, path, options, callback, data) {
  .....

  var options = {uri: url}.merge(options);

 ..... 
}