Adding http headers in Angular 6

Question

Can anyone tell me if this is the correct way to add headers to http requests in Angular 6?

When I make the call via SwaggerUI, I can see the headers should be:

url -X GET --header 'Accept: application/json' --header 'zumo-api-version: 2.0.0' 'https://myurl/tables/stuff'

so I have added the following:

let headers: HttpHeaders = new HttpHeaders();
headers = headers.append('HttpHeader1', 'Accept:application/json');
headers = headers.append('HttpHeader2', 'zumo-api-version:2.0.0');

And then the call:

getStuff(){
    return this.http.get('https://myurl/tables/stuff', {headers})
  }

There is no failure but nothing is returned, and I know that there should be.

thanks

UPDATE

Have just noticed that the url in my call is actually https not http, would that make any difference?

getStuff(){
        return this.https.get('https://myurl/tables/stuff', {headers})
      }

Answer 1

The correct way to set headers is

let headers: HttpHeaders = new HttpHeaders();
headers = headers.append('Accept', 'application/json');
headers = headers.append('zumo-api-version', '2.0.0');

Answer 2

Angular 6 format:

let headers = new HttpHeaders({
    'Accept': 'application/json',
    'zumo-api-version': '2.0.0'
});