Function previewBody

cmd/cache-proxy/proxy.go:653–659

previewBody returns up to 256 bytes of the body for log lines so we don't spam multi-KiB XML envelopes into structured logs while still keeping the useful prefix (S3 puts the ... first).

(body []byte)

	req, err := http.NewRequestWithContext(ctx, r.Method, r.URL.String(), nil)
	if err != nil {
		return 0, "", err
	}
	for k, vv := range r.Header {
		if hopByHop[strings.ToLower(k)] || isInternalPropagationHeader(k) {
			continue
		}
		for _, v := range vv {
			req.Header.Add(k, v)
		}