Maybe we should support http2 ?

[ScSofts]

Since golang has its official support of http2, I think we can easily support http2 as a new feature. Sadly, I have never work on golang, so I cannot do it myself.😭

[mingcheng]

Yep, thanks for your suggestion. I found some usage information in which about golang's offical http2 library. And we will have a try: https://posener.github.io/http2/