/// <summary>
/// 开始下载资源文件
/// 注意：只有第一次请求的参数才是有效的
/// </summary>
public static DownloaderBase BeginDownload(BundleInfo bundleInfo, int failedTryAgain, int timeout = 60)
{
// 查询存在的下载器
if (_downloaderDic.TryGetValue(bundleInfo.Hash, out var downloader))
{
return(downloader);
}
// 如果资源已经缓存
if (ContainsVerifyFile(bundleInfo.Hash))
{
var tempDownloader = new TempDownloader(bundleInfo);
return(tempDownloader);
}
// 创建新的下载器
{
YooLogger.Log($"Beginning to download file : {bundleInfo.BundleName} URL : {bundleInfo.RemoteMainURL}");
FileUtility.CreateFileDirectory(bundleInfo.GetCacheLoadPath());
DownloaderBase newDownloader;
if (bundleInfo.SizeBytes >= _breakpointResumeFileSize)
{
newDownloader = new HttpDownloader(bundleInfo);
}
else
{
newDownloader = new FileDownloader(bundleInfo);
}
newDownloader.SendRequest(failedTryAgain, timeout);
_downloaderDic.Add(bundleInfo.Hash, newDownloader);
return(newDownloader);
}
}
// 验证文件完整性
public static bool CheckContentIntegrity(BundleInfo bundleInfo)
{
return(CheckContentIntegrity(bundleInfo.GetCacheLoadPath(), bundleInfo.SizeBytes, bundleInfo.CRC));
}