Turns out if you follow these steps 1) Add an entry into /etc/hosts 2) Add a self signed certificate as trusted 3) Start a https server as root (with sudo) That you can build a simple proxy for Investoscope which emulates yahoo and avoid many problems. <img width="748" alt="image" src="https://user-images.githubusercontent.com/770327/45396545-83045080-b67f-11e8-924f-d92cfedd4b70.png">