http.go

package main

import (
	"fmt"
	"net/http"
	"os"

	"github.com/gorilla/handlers"
	"github.com/gorilla/mux"
)

func main() {
	r := mux.NewRouter()
	r.NotFoundHandler = http.HandlerFunc(NotFoundHandler)
	r.HandleFunc("/", HomeHandler)
	gzip := handlers.CompressHandler(r)
	http.ListenAndServe(":"+os.Getenv("PORT"), gzip)
}

func NotFoundHandler(w http.ResponseWriter, r *http.Request) {
	w.WriteHeader(http.StatusNotFound)
	fmt.Fprintf(w, "404 - not found")
}

func HomeHandler(w http.ResponseWriter, r *http.Request) {
	w.WriteHeader(http.StatusOK)
	fmt.Fprintf(w, "Hello, World!")
}