writeResponse(w, http.StatusSeeOther, nil, mimeNone)
}

func writeSuccessResponseHeadersOnly(w http.ResponseWriter) {
	writeResponse(w, http.StatusOK, nil, mimeNone)
}

// writeErrorResponse writes error headers
func writeErrorResponse(ctx context.Context, w http.ResponseWriter, err APIError, reqURL *url.URL) {
	switch err.HTTPStatusCode {
	case http.StatusServiceUnavailable, http.StatusTooManyRequests:

		return
	}

	file = filepath.ToSlash(file)
	// Reject attempts to traverse parent or absolute paths.
	if hasBadPathComponent(volume) || hasBadPathComponent(file) {
		writeErrorResponse(r.Context(), w, errorCodes.ToAPIErr(ErrInvalidResourceName), r.URL)
		return
	}

	var publicKey *rsa.PublicKey

	publicKeyB64 := r.Form.Get("public-key")
	if publicKeyB64 != "" {