Function queryHttpTime

internal/timesync/http.go:123–151

(
	ctx context.Context,
	url string,
	timeout time.Duration,
	proxyFunc func(*http.Request) (*url.URL, error),
)

}

func queryHttpTime(
	ctx context.Context,
	url string,
	timeout time.Duration,
	proxyFunc func(*http.Request) (*url.URL, error),
) (now *time.Time, response *http.Response, err error) {
	transport := http.DefaultTransport.(*http.Transport).Clone()
	transport.Proxy = proxyFunc

	client := http.Client{
		Transport: transport,
		Timeout:   timeout,
	}

	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
	if err != nil {
		return nil, nil, err
	}
	resp, err := client.Do(req)
	if err != nil {
		return nil, nil, err
	}
	dateStr := resp.Header.Get("Date")
	parsedTime, err := time.Parse(time.RFC1123, dateStr)
	if err != nil {
		return nil, nil, err
	}
	return &parsedTime, resp, nil
}