Function wrapGzipBody

fetcher/request.go:163–177

wrapGzipBody wraps the response body in a gzip reader if the Content-Encoding is gzip. We set DisableCompression: true to avoid sending the Accept-Encoding: gzip header, since we do not want to compress image data (which is usually already compressed). However, some servers still send gzip-encoded r

(res *http.Response)

// since we do not want to compress image data (which is usually already compressed).
// However, some servers still send gzip-encoded responses regardless.
func wrapGzipBody(res *http.Response) error {
	if res.Header.Get(httpheaders.ContentEncoding) == "gzip" {
		gzipBody, err := gzip.NewReader(res.Body)
		if err != nil {
			return err
		}
		res.Body = &gzipReadCloser{
			Reader: gzipBody,
			r:      res.Body,
		}
		res.Header.Del(httpheaders.ContentEncoding)
	}

	return nil
}

// gzipReadCloser is a wrapper around gzip.Reader which also closes the original body
type gzipReadCloser struct {