Display HTTP requests

main.go

package main

import (
	"flag"
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
	"os"
)

const (
	black   = "\033[30m%s\033[0m"
	red     = "\033[31m%s\033[0m"
	green   = "\033[32m%s\033[0m"
	yellow  = "\033[33m%s\033[0m"
	blue    = "\033[34m%s\033[0m"
	magenta = "\033[35m%s\033[0m"
	cyan    = "\033[36m%s\033[0m"
	white   = "\033[97m%s\033[0m"
)

func parse() string {
	var port string
	flag.StringVar(&port, "port", "", "Specify a port to start.")

	flag.Parse()
	flag.Usage = func() {
		fmt.Fprintln(os.Stderr, "🌍  gohttp")
		flag.PrintDefaults()
	}

	if len(port) == 0 {
		flag.Usage()
		log.Fatal()
	}

	return port
}

func main() {
	port := parse()

	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		w.Write([]byte("OK"))
		body, _ := ioutil.ReadAll(r.Body)
		fmt.Printf(red+" ", r.RemoteAddr)
		fmt.Printf(green+" ", r.Method)
		fmt.Printf(yellow+" ", r.URL.EscapedPath())
		fmt.Printf(blue+" ", r.UserAgent())
		fmt.Printf(magenta+" ", string(body))
		fmt.Println("")
	})
	http.ListenAndServe(":"+port, nil)
}