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July 25, 2024 03:38
Idiomatic golang net/http gzip transparent compression (works with Alice)
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package main | |
import ( | |
"compress/gzip" | |
"io" | |
"net/http" | |
"strings" | |
) | |
// Gzip Compression | |
type gzipResponseWriter struct { | |
io.Writer | |
http.ResponseWriter | |
} | |
func (w gzipResponseWriter) Write(b []byte) (int, error) { | |
return w.Writer.Write(b) | |
} | |
func Gzip(handler http.Handler) http.Handler { | |
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { | |
if !strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") { | |
handler.ServeHTTP(w, r) | |
return | |
} | |
w.Header().Set("Content-Encoding", "gzip") | |
gz := gzip.NewWriter(w) | |
defer gz.Close() | |
gzw := gzipResponseWriter{Writer: gz, ResponseWriter: w} | |
handler.ServeHTTP(gzw, r) | |
}) | |
} |
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Pure gold, was just seeking for a solution and found this 😄