35 lines
909 B
Go
Executable File
35 lines
909 B
Go
Executable File
package main
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import (
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"fmt"
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"gogs.inhome.blapointe.com/local/args"
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"log"
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"net/http"
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"golang.org/x/time/rate"
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)
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func main() {
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as := args.NewArgSet()
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as.Append(args.INT, "port", "port to listen on", 8080)
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as.Append(args.STRING, "root", "root dir to serve", "./public")
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as.Append(args.INT, "rps", "rate limit in requests per second", 3)
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if err := as.Parse(); err != nil {
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panic(err)
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}
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log.Printf("listening on %v to serve %s at %d rps", as.GetInt("port"), as.GetString("root"), as.GetInt("rps"))
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s := http.FileServer(http.Dir(as.GetString("root")))
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limiter := rate.NewLimiter(rate.Limit(as.GetInt("rps")), as.GetInt("rps"))
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log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", as.GetInt("port")), http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if err := limiter.Wait(r.Context()); err != nil {
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log.Println("rate limited:", err)
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return
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}
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s.ServeHTTP(w, r)
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})))
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}
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