package main

import (
	"golang.org/x/net/http2"
	"net"
	"net/http"
)

func main() {
	// curl -v --http2-prior-knowledge http://localhost:8080
	listener, err := net.Listen("tcp", "0.0.0.0:8080")
	if err != nil {
		panic(err)
	}

	h2s := &http2.Server{}
	for {
		conn, err := listener.Accept()
		if err != nil {
			panic(err)
		}

		h2s.ServeConn(conn, &http2.ServeConnOpts{
			Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
				_, _ = w.Write([]byte("Hello World"))
			}),
		})
	}
}