// http.gopackage mainimport (	"fmt"	"log"	"net/http")func main() {	fmt.Println("Hello World!")	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {		w.Write([]byte("Hello, this is http server! " + r.URL.String()))	})	http.HandleFunc("/bye", sayBye)	log.Println("Starting server ...")	log.Fatal((http.ListenAndServe(":8888", nil)))}func sayBye(w http.ResponseWriter, r *http.Request) {	w.Write([]byte("Bye bye, this is http server! " + r.URL.String()))}