Method sendRequest

imagedata/factory.go:197–245

sendRequest is a common logic between sync and async download.

(
	ctx context.Context, url string, opts DownloadOptions,
)

// sendRequest is a common logic between sync and async download.
func (f *Factory) sendRequest(
	ctx context.Context, url string, opts DownloadOptions,
) (*fetcher.Request, *http.Response, http.Header, error) {
	h := make(http.Header)

	// NOTE: This will be removed in the future when our test context gets better isolation
	if len(redirectAllRequestsTo) > 0 {
		url = redirectAllRequestsTo
	}

	header := opts.Header

	// Inject monitoring headers.
	// Clone the headers to avoid modifying the original ones.
	if f.monitoring != nil {
		header = header.Clone()
		f.monitoring.InjectHeaders(ctx, header)
	}

	req, err := f.fetcher.BuildRequest(ctx, url, header, opts.CookieJar)
	if err != nil {
		return req, nil, h, err
	}

	res, err := req.Fetch()
	if res != nil {
		h = res.Header.Clone()
	}
	if err != nil {
		if res != nil {
			res.Body.Close()
		}
		req.Cancel()

		return req, nil, h, err
	}

	res, err = limitResponseSize(res, opts.MaxSrcFileSize)
	if err != nil {
		if res != nil {
			res.Body.Close()
		}
		req.Cancel()

		return req, nil, h, err
	}

	return req, res, h, nil
}

func (f *Factory) startMonitoringSpan(
	ctx context.Context,