go echoheaders

echo.go

package main

import (
	"fmt"
	"net/http"
	"strings"
	"time"
)

// handler hello world, the web server
func handler(w http.ResponseWriter, req *http.Request) {
	fmt.Fprintf(w, "path:%s\n", req.URL.Path)
	fmt.Fprintf(w, "scheme:%s\n", req.URL.Scheme)
	for k, v := range req.Header {
		fmt.Fprintf(w, "key:%s", k)
		fmt.Fprintf(w, "val:%s", strings.Join(v, ""))
	}
}

// main fundtion
func main() {
	http.HandleFunc("/", handler)
	server := &http.Server{
		Addr:           ":3333",
		ReadTimeout:    10 * time.Second,
		WriteTimeout:   10 * time.Second,
		MaxHeaderBytes: 1 << 20,
	}
	server.SetKeepAlivesEnabled(true)
	if err := server.ListenAndServe(); err != nil {
		panic(err)
	}
}