I'm trying to port https://github.com/Node-DC/Node-DC-EIS application (currently in node.js benchmarking) to use http2 api from Node.js core to track and understand performance impact of new api. I know how "spdy" module is used in express app, is this going to be similar? Or is there any guideline or migration document/readme available? What branch of express I should use for my work? This can also help test http2 support in express if that is something is important to expressjs project.