Hi All - I am trying to Integrate SFMC to an External Service via REST API.

Here is the SSJS script that I have: 

<script runat=server>

Platform.Load('Core','1.1.1');

var host = 'https://apis-dev.cxawsnprd.?????????.com/LLauthtoken/ui'

 user = 'XXXXXXXXXXXXX',

 password = "YYYYYYYYYYYYYY";

var token = retrieveToken(host,user,password);

function retrieveToken(host,user,password) {

    var url ='https://apis-r-dev.?????????.com/rest/streamingproxy/topics/test';

    var payload = {

  "records": [

    {

      "key": "a2V5",

      "value": "Y29uZmx1ZW50"

    },

    {

      "value": "a2Fma2E="

    }

  ]

};

    var req = new Script.Util.HttpRequest(url);

    req.emptyContentHandling = 0;

    req.retries = 2;

    req.continueOnError = true;

    req.contentType = "application/vnd.kafka.json.v2+json"

    req.method = "POST";

    req.postData = Stringify(payload);

    var resp = req.send();

    var resultStr = String(resp.content);

    var resultJSON = Platform.Function.ParseJSON(String(resp.content));

    return resultJSON.token;

}

</script>

Using this I am unable to see the response coming back. Am I missing something? Any other way the same can be achieved?

Thanks!