App.js

<div className={"right-align"}>
	<Tool className={"confirm-btn"} icon={"fas fa-check"}
								  onClick={() => this.beginDownload()}/>
</div>
[...]
beginDownload() {
		[...]
			this.setState({downloads: [...this.state.downloads, new Download()]});
		[...]
	}
[...]
export default class Download {
	  constructor() {
      [...]
      new Promise(resolve => {
			var options = {method: 'HEAD', host: 'stackoverflow.com', port: 443, path: '/'};
			var req = https.request(options, function (res) {
					console.log("in the request");
					//console.log(res);
					//resolve(res.headers['content-length']);
					console.log(JSON.stringify(res.headers));
					res.on("data",res => {
						console.log(JSON.stringify(res));
					})
				}
			);
			req.end();
		});
    }
    [...]
   }