Method roundTripWithOptionalFollowRedirect

github/github.go:2042–2069

When using roundTripWithOptionalFollowRedirect, note that it is the responsibility of the caller to close the response body.

(ctx context.Context, u string, maxRedirects int, opts ...RequestOption)

// When using roundTripWithOptionalFollowRedirect, note that it
// is the responsibility of the caller to close the response body.
func (c *Client) roundTripWithOptionalFollowRedirect(ctx context.Context, u string, maxRedirects int, opts ...RequestOption) (*http.Response, error) {
	req, err := c.NewRequest(ctx, "GET", u, nil, opts...)
	if err != nil {
		return nil, err
	}

	var resp *http.Response
	// Use http.DefaultTransport if no custom Transport is configured
	if c.client.Transport == nil {
		resp, err = http.DefaultTransport.RoundTrip(req)
	} else {
		resp, err = c.client.Transport.RoundTrip(req)
	}
	if err != nil {
		return nil, err
	}

	// If redirect response is returned, follow it
	if maxRedirects > 0 && resp.StatusCode == http.StatusMovedPermanently {
		_ = resp.Body.Close()
		u = resp.Header.Get("Location")
		if err := c.checkRedirectHost(u); err != nil {
			return nil, err
		}
		resp, err = c.roundTripWithOptionalFollowRedirect(ctx, u, maxRedirects-1, opts...)
	}
	return resp, err
}

// checkRedirectHost returns an error if the redirect target is on a different
// host than the client's configured BaseURL. This prevents credentials attached