I tried gcloud, oh well

main.go

@@ -0,0 +1,37 @@
+package main
+
+import (
+	"fmt"
+	"local/args"
+	"local/gziphttp"
+	"log"
+	"net/http"
+
+	"golang.org/x/time/rate"
+)
+
+func main() {
+	as := args.NewArgSet()
+
+	as.Append(args.INT, "port", "port to listen on", 8080)
+	as.Append(args.STRING, "root", "root dir to serve", "./public")
+	as.Append(args.INT, "rps", "rate limit in requests per second", 3)
+
+	if err := as.Parse(); err != nil {
+		panic(err)
+	}
+
+	s := http.FileServer(http.Dir(as.GetString("root")))
+	limiter := rate.NewLimiter(rate.Limit(as.GetInt("rps")), as.GetInt("rps"))
+	log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", as.GetInt("port")), http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if gziphttp.Can(r) {
+			gz := gziphttp.New(w)
+			w = gz
+		}
+		if err := limiter.Wait(r.Context()); err != nil {
+			log.Println("rate limited:", err)
+			return
+		}
+		s.ServeHTTP(w, r)
+	})))
+}