contentencoding

Serve gzipped files with Content-Encoding

Serve files from the local directory via http.

Gzipped files like foo.css.gz will be served with Content-Encoding gzip and the appropriate Content-Type.

The Content-Type gets determined by the file extension with the help of mime.TypeByExtension

Use case

If you want to use a file like foo.js.gz, then most web servers will serve the file with the Content-Type "application/gzip".

But this means, you can't use the file like in this html snippet:

<script src="/static/foo.js.gz"></script>

The error message of the browser:

Uncaught SyntaxError: Invalid or unexpected token (at foo.js.gz:1:1)

The contentencoding.FileServer of this Go package serves the above file with these headers, so that the browser is able to consume these files.

Content-Type: text/css

Content-Encoding: gzip

This way, the above html snippet just works, and the static gzipped files can be served without modification.

Command-Line Usage:

❯ go run github.com/guettli/contentencoding@latest

Listening on http://localhost:1234

Arguments:

[address (default: localhost:1234)] [directory (default: .)]

Golang Package

If you want to serve the directory "static" under the URL prefix "/static", you can use this Go code:

import (
	"net/http"

	"github.com/guettli/contentencoding"
)

    ...
	http.Handle("/static/", http.StripPrefix("/static/", contentencoding.FileServer(http.Dir("./static")))))

Feedback is welcome

Feel free to create an issue at Github to provide feedback.