Run script as windows AD user - node.js

Question

I am running the following script in a Windows command prompt with node myscript.js. The script requests a web application which is using Windows Authentication. I expect to receive status code 200. But the script returns a 401 Unauthenticated.
let request = require('request');
console.log(process.env.USERDOMAIN);
console.log(process.env.USERNAME);
request('http://internalurl',
function (error, response, body){
if (!error && response.statusCode == 200){
console.log('request successful!');
var input = JSON.parse(body);
}
console.log(response);
});
The process.env.USERNAME displays my current username which should have access to the web application. Because of this I am assuming that the script is running under the correct user account. What is the best practice to login into the web application?

Answer 1

It's normal to receive a 401 message when using Windows authentication - that's the first step in the Windows authentication process. The WWW-Authenticate header in the 401 response then tells you which authentication mechanisms are available (either NTLM or Negotiate).
The accepted answer to this question describes the process in more detail: https://stackoverflow.com/a/13960538/1202807
However, that answer doesn't provide a solution for a node client. But the last answer to that question does give an example of how to do it with node-libcurl:
var endpoint = urlString;
var url = require("url");
var endpointUrl = url.parse(endpoint);
var Curl = require( 'node-libcurl' ).Curl;
var curl = new Curl();
curl.setOpt( 'USERNAME', '' );
//curl.setOpt( 'VERBOSE', 1 );
curl.setOpt( 'URL', endpoint );
curl.setOpt( 'HTTPAUTH', Curl.auth.NEGOTIATE );
curl.setOpt( 'NOPROXY', endpointUrl.hostname );
curl.on( 'end', function( statusCode, body, headers ) {
if (statusCode === 200) {
console.log(body);
cb(null, { statusCode, body, headers } );
} else {
cb(new Error(), { statusCode, body, headers } );
}
this.close();
});
curl.on( 'error', curl.close.bind( curl ) );
curl.perform();
I've never done this in node myself though, so that's about all the help I can be.