oslc-browser gets CORS errors with the IBM jazz-apps

[jamsden]

Getting a CORS error: When running the oslc-browser web app in a different container than the IBM jazz-apps, there will be a CORS error on GET of a IBM ELM resource.

It is possible to configure WebSphere Liberty or Tomcat to enable CORS. Configuring Cross Origin Resource Sharing on a Liberty server should be used for production

Work around: run oslc-browser using https and disable CORS checking in Chrome:

open -n -a Google\ Chrome --args --disable-web-security --user-data-dir
HTTPS=true npm start

Open any ELM resource in order to login and store the authentication tokens in the browser.

Need to configure the App.js to:

1. support https, SSL, and prompt to accept the self assigned certificate (like the browser does.
2. handle CORS challenge
3. Add support for OpenIDConnect to that can be added as a friend to DNG.
4. Or maybe try adding as a whitelist URL in DNG

https://example.com:9443/rm/rootservices: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:3000' is therefore not allowed access. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.

var myRequest = new Request('flowers.jpg');
var myMode = myRequest.mode; // returns "cors" by default
myRequest.mode = 'no-cors'; // might work ok, but probably not for PUT or POST.

Might be able to use an express middleware component to do this.