Function fetchURL

internal/driver/fetch.go:525–540

fetchURL fetches a profile from a URL using HTTP.

(source string, timeout time.Duration, tr http.RoundTripper)

// fetchURL fetches a profile from a URL using HTTP.
func fetchURL(source string, timeout time.Duration, tr http.RoundTripper) (io.ReadCloser, error) {
	client := &http.Client{
		Transport: tr,
		Timeout:   timeout + 5*time.Second,
	}
	resp, err := client.Get(source)
	if err != nil {
		return nil, fmt.Errorf("http fetch: %v", err)
	}
	if resp.StatusCode != http.StatusOK {
		defer resp.Body.Close()
		return nil, statusCodeError(resp)
	}

	return resp.Body, nil
}

func statusCodeError(resp *http.Response) error {
	if resp.Header.Get("X-Go-Pprof") != "" && strings.Contains(resp.Header.Get("Content-Type"), "text/plain") {