Serving gzipped content for Go

http webserver go
Rick-777 picture Rick-777 · Dec 28, 2012 · Viewed 24.5k times · Source

I'm starting to write server-side applications in Go. I'd like to use the Accept-Encoding request header to determine whether to compress the response entity using GZIP. I had hoped to find a way to do this directly using the http.Serve or http.ServeFile methods.

This is quite a general requirement; did I miss something or do I need to roll my own solution?

Answer

Moshe Revah picture Moshe Revah · Dec 19, 2015

The New York Times have released their gzip middleware package for Go.

You just pass your http.HandlerFunc through their GzipHandler and you're done. It looks like this:

package main

import (
    "io"
    "net/http"
    "github.com/nytimes/gziphandler"
)

func main() {
    withoutGz := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        w.Header().Set("Content-Type", "text/plain")
        io.WriteString(w, "Hello, World")
    })

    withGz := gziphandler.GzipHandler(withoutGz)

    http.Handle("/", withGz)
    http.ListenAndServe("0.0.0.0:8000", nil)
}

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