A little bit about debugProxy
debugProxy is a HTTP/S hosted proxy server that lets you interact with the traffic passing through it, using a web based dashboard.
This means, for example, you can use the browser on your desktop or tablet to view the traffic being sent from apps on your mobile phone to the Internet.
debugProxy can intercept HTTPS and HTTP2 traffic by acting as a Certificate Authority and issuing certificates on-the-fly.
For a quick demostration there are some videos. Below is a is a screen shot of the web dashboard.
It's free to register and start a proxy server.