// Gzip returns a middleware which compresses HTTP response using gzip compression scheme.
func Gzip(c *neo.Ctx, next neo.Next) {
scheme := "gzip"
c.Res.Header().Set("Vary", "Accept-Encoding")
// c.Res.Header().Set("Content-Encoding", "gzip")
if strings.Contains(c.Res.Header().Get("Accept-Encoding"), scheme) {
w := writerPool.Get().(*gzip.Writer)
//replace the rep in ctx
w.Reset(c.Res.Writer())
defer func() {
w.Close()
writerPool.Put(w)
}()
gw := gzipWriter{Writer: w, ResponseWriter: c.Res.Writer()}
c.Res.Header().Set("Content-Encoding", scheme)
//need a set function for c.Res
c.Response().SetWriter(gw)
}
next()
return
}
