Serving gzipped content for Go

Question

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 1

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) } 

Answer 2

There is no “out of the box” support for gzip-compressed HTTP responses yet. But adding it is pretty trivial. Have a look at

https://gist.github.com/the42/1956518

also

https://groups.google.com/forum/?fromgroups=#!topic/golang-nuts/cgUp8_ATNtc