Lets say you got the website: domain.com
You have a application you can't modify as described in your readme.

My idea was, bind the proxy to port 80 and redirect DNS queries for domain.com to 127.0.0.1
So when I run: curl domain.com it hits your proxy.

However, the proxy, just response with JSON.
What would be a nice feature, that the proxy would start browsing the website.