It has been in the making for at least ten years, the problem for me has been that that production environments and test environments are not the same when you use proxys. So you need to check both, and you need to have the same type of connection that your customers use.
https://www.youtube.com/watch?v=B2qePLeI-s8
From the HTTP must die thread a month ago. https://news.ycombinator.com/item?id=44915090