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sethvargo avatar sethvargo commented on August 11, 2024

Hi @dmytrohridin

I assume you're talking about the httplimit package specifically? For custom behavior, my general recommendation is to build your own middleware. The existing logic isn't particularly complex:

go-limiter/httplimit/middleware.go

Lines 91 to 127 in 67fff5e

func (m *Middleware) Handle(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
// Call the key function - if this fails, it's an internal server error.
key, err := m.keyFunc(r)
if err != nil {
http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
return
}
// Take from the store.
limit, remaining, reset, ok, err := m.store.Take(ctx, key)
if err != nil {
http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
return
}
resetTime := time.Unix(0, int64(reset)).UTC().Format(time.RFC1123)
// Set headers (we do this regardless of whether the request is permitted).
w.Header().Set(HeaderRateLimitLimit, strconv.FormatUint(limit, 10))
w.Header().Set(HeaderRateLimitRemaining, strconv.FormatUint(remaining, 10))
w.Header().Set(HeaderRateLimitReset, resetTime)
// Fail if there were no tokens remaining.
if !ok {
w.Header().Set(HeaderRetryAfter, resetTime)
http.Error(w, http.StatusText(http.StatusTooManyRequests), http.StatusTooManyRequests)
return
}
// If we got this far, we're allowed to continue, so call the next middleware
// in the stack to continue processing.
next.ServeHTTP(w, r)
})
}

Then you can set your own headers, responses, or even custom logic.

from go-limiter.

github-actions avatar github-actions commented on August 11, 2024

This issue has been automatically locked since there has not been any
recent activity after it was closed. Please open a new issue for
related bugs.

from go-limiter.

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