func proxyRetryPolicy()

in proxymode/proxymode.go [87:108]

• 17 lines of code
• 6 McCabe index (conditional complexity)

func proxyRetryPolicy(ctx context.Context, resp *http.Response, err error) (bool, error) {
	shouldRetry, err := retryablehttp.DefaultRetryPolicy(ctx, resp, err)
	if shouldRetry {
		return shouldRetry, err
	}

	// Chaining Package Registry servers (proxies) is allowed. HTTP client must get to the end of the chain.
	locationHeader := resp.Header.Get("location")
	if locationHeader != "" {
		return false, nil
	}

	// Expect json content type only for success statuses.
	if code := resp.StatusCode; code >= 200 && code < 300 {
		contentType := resp.Header.Get("content-type")
		if !strings.HasPrefix(contentType, "application/json") {
			return true, fmt.Errorf("unexpected content type: %s", contentType)
		}
	}

	return false, nil
}