NodeJS Kerberos authentication

main.js

var Kerberos = require('kerberos').Kerberos;
var kerberos = new Kerberos();
var Ssip = require('kerberos').SSIP;
var http = require('http');
var urlParser = require('url');

var curl = urlParser.parse("http://<your SPNEGO protected endpoint>/");

var requestOptions = {
 host: curl.hostname,
 port: curl.port,
 path: curl.path,
 method: "GET",
 withCredentials: false // this is the important part
};

Ssip.SecurityCredentials.acquire("Negotiate", "", function(err, security_credentials) {
    if(err) return callback(err);

    //console.log("HTTP/"+(curl.hostname));
    Ssip.SecurityContext.initialize(security_credentials, "HTTP/"+(curl.hostname), "", function(err, security_context) {
            if(err) throw err;

            var has_context = security_context.hasContext;
            var payload = security_context.payload;

            requestOptions.headers = {
                Authorization: "Negotiate " + payload
            };

            httpGet(requestOptions, function(headers) {
                //console.info(headers);
            });

            //console.info(payload);
            //console.info(has_context);
        });

    // Save credentials
    //console.info(security_credentials);
});

function httpGet(requestOptions, cb) {
    var request = http.request(requestOptions, function (response) {
        var responseContent = "";
        response.setEncoding('utf8');
        response.on('data', function(chunk) {
            responseContent += chunk;
        });
        response.on('end', function() {
            console.info(response.statusCode);
            //console.info(responseContent);
            cb(response.headers['WWW-Authenticate']);
        });
    });

    request.on('error', function (e) {
        console.log(e.message);
    });

    request.end();
}