h2c-prior-server.go

server := http2.Server{}

l, err := net.Listen("tcp", "0.0.0.0:1010")
checkErr(err, "while listening")

fmt.Printf("Listening [0.0.0.0:1010]...\n")
for {
    conn, err := l.Accept()
    checkErr(err, "during accept")

    server.ServeConn(conn, &http2.ServeConnOpts{
        Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
            fmt.Fprintf(w, "Hello, %v, http: %v", r.URL.Path, r.TLS == nil)
        }),
    })
}