Function NewDownloader

internal/data/downloader.go:26–32

NewDownloader 创建下载器

()

// NewDownloader 创建下载器
func NewDownloader() *Downloader {
	return &Downloader{
		timeout:    30 * time.Second,
		retries:    3,
		retryDelay: 2 * time.Second,
	}
}

// printTimestampedMessage 打印带时间戳的消息
func printTimestampedMessage(format string, args ...interface{}) {