package main

import (
	"flag"
	"fmt"
	"net/http"
)

func main() {
	var host string
	var port int
	flag.StringVar(&host, "h", "127.0.0.1", "IP地址")
	flag.IntVar(&port, "p", 9000, "端口")
	flag.Parse()
	address := fmt.Sprintf("%s:%d", host, port)
	http.HandleFunc("/ping", func(writer http.ResponseWriter, request *http.Request) {
		_, _ = fmt.Fprintln(writer, fmt.Sprintf("%s by %s", "pong", address))
	})
	http.HandleFunc("/", func(writer http.ResponseWriter, request *http.Request) {
		_, _ = fmt.Fprintln(writer, fmt.Sprintf("%s by %s", "hello world", address))
	})
	err := http.ListenAndServe(address, nil)
	if nil != err {
		panic(err)
	}
}