package main

import (
	"log"
	"net/http"

	"golang.org/x/net/http2"
	"golang.org/x/net/http2/h2c"
)

func main() {
	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusOK)
		w.Write([]byte("ok"))
	})

	server := &http.Server{
		Addr:    ":80",
		Handler: h2c.NewHandler(handler, &http2.Server{}),
	}

	log.Println("H2C server listening on :80")
	if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
		log.Fatalf("ListenAndServe: %v", err)
	}
}