httpd.go

package main

import (
  "github.com/julienschmidt/httprouter"
  "net/http"
  "os"
  "fmt"
)

func main(){
  router := httprouter.New()
  router.GET("/", Index)
  port := os.Getenv("PORT")
  if port == "" {
    port = "3000"
  }
  router.NotFound = http.FileServer(http.Dir("public"))
  http.ListenAndServe(":"+port, router)
}

func Index(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
  fmt.Fprintln(w, "OK")
}

go get github.com/julienschmidt/httprouter