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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) | |
| } | |
| 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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