simple http proxy in go, with a chaos monkey twist

http-proxy.go

package main

import (
	"fmt"
	"net/http"
	"net/http/httputil"
	"strconv"
	"time"
)

const VERSION = "0.0.1"

func HttpRouteHandler(w http.ResponseWriter, r *http.Request) {
	r.URL.Scheme = "http"
	r.URL.Host = r.Host

	for key, val := range r.Header {
		switch key {
		case "X-Chaos-Latency":
			sleepInt, err := strconv.Atoi(val[0])
			if err != nil {
				fmt.Println("Failed to convert X-Chaos-Latency to integer")
				return
			}
			sleep := time.Duration(sleepInt) * time.Millisecond
			fmt.Println("Adding", sleep, "to request.")
			time.Sleep(sleep)
			delete(r.Header, key)
		}
	}

	proxy := httputil.NewSingleHostReverseProxy(r.URL)
	proxy.ServeHTTP(w, r)
}

func main() {
	http.HandleFunc("/", HttpRouteHandler)
	http.ListenAndServe(":80", nil)
}