Fiber: 🤗 How to compress response myself?

Created on 2 Aug 2020 · 9Comments · Source: gofiber/fiber

Question description

I'm doing some forbidden magic, sending the generated CSS to the user, but I can't find a way to do it with compression. So, how can I do that with fiber?

Code snippet

package main

import "github.com/gofiber/fiber"

func main() {
  app := fiber.New()

  app.Get("/css/app.css", NewCSSHandler("./public/css"))
}

func NewCSSHandler(dir string) func(*fiber.Ctx) {
  // Getting content of all css files in dir and minifies it
  var data []byte = doMagic()

  return func(ctx *fiber.Ctx) {
    ctx.Set("Content-Type", "text/css")
    ctx.Set("Content-Length", strconv.Itoa(len(data)))

    ctx.SendBytes(data)
  }
}

🤔 Question

Source

Terisback

All 9 comments

Hi @Terisback, use our compress middleware to enable compression for deflate, gzip and brotli:

app.Get("/css/app.css", middleware.Compress(), NewCSSHandler("./public/css"))

You can find more examples here https://github.com/gofiber/fiber/blob/master/middleware/compress.md

Fenny on 2 Aug 2020

@Fenny I forgot to mention that I already using compression (as middleware), but on site I get css without it

Terisback on 2 Aug 2020

Will check your case in hour

Terisback on 2 Aug 2020

Could you show us the response headers for the css file? Keep in mind that the browser automatically unpacks the compressed response. Maybe you are talking about minification ( https://github.com/tdewolff/minify#css )

You could compare the content length when turning compression on and off to see if it has effect.

PS: In order to compress, the response needs to be bigger than xKb (I forgot what the threshold is)

Fenny on 2 Aug 2020