// occurred, or if the URL matches the sourceRequestHost.
func (t *Transport) rewriteURL(url *url.URL, sourceURL *url.URL, sourceRequestHost string) string {
	// Example:
	//      When API server processes a proxy request to a service (e.g. /api/v1/namespace/foo/service/bar/proxy/),
	//      the sourceURL.Host (i.e. req.URL.Host) is the endpoint IP address of the service. The