Imported Google Group message.
Date:Tuesday, 4 August 2015 19:43:48 UTC+1.
We haven't looked at CORS at all yet, but will put it on the roadmap.
The easiest thing to do would be to use nginx to URL rewrite a sub-domain or directory for the web app to Tyk as an upstream proxy. That would completely solve the CORS issue.
In fact, this is what the host manager does (bundled with the dashboard), it basically manages an nginx instance. In your case you might not need this though, as it's designed to manage multiple API definitions across domains, so you could manually configure it. If you take a look at the templates folder that comes with the host manager you can see a way to handle the rewrite easily.
Let me know if that's a feasible option for you.