redirect.go — fiber Source File

Source Code

// ⚡️ Fiber is an Express inspired web framework written in Go with ☕️
// 📝 GitHub Repository: https://github.com/gofiber/fiber
// 📌 API Documentation: https://docs.gofiber.io

package fiber

import (
	"bytes"
	"encoding/hex"
	"sync"

	"github.com/gofiber/utils/v2"
	"github.com/valyala/bytebufferpool"
	"github.com/valyala/fasthttp"

	"github.com/gofiber/fiber/v3/binder"
)

// Pool for redirection
var (
	redirectPool = sync.Pool{
		New: func() any {
			return &Redirect{
				status:   StatusSeeOther,
				messages: make(redirectionMsgs, 0),
			}
		},
	}
	oldInputPool = sync.Pool{
		New: func() any {
			return make(map[string]string)
		},
	}
)

const maxPoolableMapSize = 64

// FlashCookieName Cookie name to send flash messages when to use redirection.
const (
	FlashCookieName = "fiber_flash"
)

var flashCookieNeedle = []byte(FlashCookieName + "=")

// hasFlashCookie is on the request hot path and runs on every request/response cycle.
// Keep this cheap for users who don't use flash messages:
// 1) a fast raw-header prefilter to avoid unnecessary cookie parsing,
// 2) an exact cookie lookup to avoid prefix false positives (e.g. fiber_flashX).
func hasFlashCookie(header *fasthttp.RequestHeader) bool {
	rawHeaders := header.RawHeaders()
	if len(rawHeaders) == 0 {
		return false
	}

	if !bytes.Contains(rawHeaders, flashCookieNeedle) {
		return false
	}

	return header.Cookie(FlashCookieName) != nil
}
// ... (373 more lines)