tiny-server.go

package main

import (
	"fmt"
	"log"
	"net/http"
	"strconv"
)

const (
	PORT int = 9000
)

func server(w http.ResponseWriter, r *http.Request) {
	r.ParseForm()
	url := r.URL.Path
	fmt.Fprintf(w, "Welcome ~ ~ \n")
	fmt.Fprintf(w, "You are visiting: %s\n", url)
	fmt.Fprintf(w, "Method: %s\n", r.Method)
	if r.Form != nil {
		fmt.Fprint(w, "Here are parameters:\n")
		for key, value := range r.Form {
			fmt.Fprintf(w, "%s => %s", key, value)
		}
	}
}

func main() {
	http.HandleFunc("/", server)
	err := http.ListenAndServe(":"+strconv.Itoa(PORT), nil)
	if err != nil {
		log.Fatal("Fatal:", err)
	}
}