ratelimit

package

v1.3.6 Latest Latest Go to latest Published: Jul 23, 2026 License: AGPL-3.0 Imports: 6 Imported by: 0

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func ClientIP(r *http.Request) string

ClientIP extracts the client IP from the request, respecting reverse proxy headers.

type Limiter struct {
	// contains filtered or unexported fields
}

Limiter implements a per-IP token bucket rate limiter.

func New(rate float64, burst int) *Limiter

New creates a rate limiter allowing rate tokens per second with the given burst capacity.

func (l *Limiter) Allow(ip string) bool

Allow consumes one token for the given IP and reports whether the request is allowed.

func (l *Limiter) Middleware(next http.Handler) http.Handler

Middleware wraps an http.Handler and rejects requests that exceed the rate limit with a 429 status code.

func (l *Limiter) Start(ctx context.Context)

Start launches a background goroutine that evicts inactive visitors every 60 seconds. It stops when ctx is cancelled.