// 结束一个下载任务，归还并发数
public void FinishDownloadTask(DownloadInfo info)
{
info.isFinished = true;
if (info.onComplete != null)
{
info.onComplete(info);
}
m_DownloadingTasks.Remove(info.fileName);
--downloadThreads;
}
// 重试下载任务 Warning:只有下载器需要调用这个借口，业务层不要调用
public void RetryDownload(DownloadInfo info)
{
if (info.retry > 0)
{
info.retry -= 1;
pendingDownloads.Enqueue(info);
m_DownloadingTasks.Remove(info.fileName);
--downloadThreads;
}
else
{
FinishDownloadTask(info);
}
}
void Update()
{
if (pendingDownloads.Count > 0)
{
int freeThreads = maxDownloads - downloadThreads;
for (int i = 0; i < freeThreads; ++i)
{
if (pendingDownloads.Count > 0)
{
DownloadInfo info = pendingDownloads.Dequeue();
StartTask(info);
}
}
}
}
static void DownloadCommonInitialABWithBreakDownloader(BaseResFakeInfo rrInfo)
{
DownloadInfo taskinfo = new DownloadInfo(rrInfo.LocalABPath, rrInfo.GetPlatformMd5(), null);
taskinfo.savePath = FilePathTools.streamingAssetsPath_Platform + "/" + rrInfo.LocalABPath.ToLower();
if (File.Exists(taskinfo.savePath))
{
File.Delete(taskinfo.savePath);
}
FilePathTools.CreateFolderByFilePath(taskinfo.savePath);
if (!File.Exists(taskinfo.tempPath))
{
FilePathTools.CreateFolderByFilePath(taskinfo.tempPath);
File.Create(taskinfo.tempPath).Dispose();
}
using (var sw = new FileStream(taskinfo.tempPath, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.ReadWrite))
{
taskinfo.downloadedSize = (int)sw.Length;
}
DownloadingTask tmpTask = new DownloadingTask(taskinfo);
HTTPRequest httprequest = new HTTPRequest(new Uri(tmpTask.DownloadInfo.url), HTTPMethods.Head, (req, rep) =>
{
tmpTask.HeadRequest = null;
if (rep == null)
{
CommonResLog("Download failed due to network for :{0}", tmpTask.DownloadInfo.fileName);
tmpTask.DownloadInfo.result = DownloadResult.ServerUnreachable;
DownloadCommonInitialABWithBreakDownloader(rrInfo);
}
else if (rep.StatusCode == 200)
{
try
{
string firstHeaderValue = rep.GetFirstHeaderValue("Content-Length");
tmpTask.DownloadInfo.downloadSize = int.Parse(firstHeaderValue);
CommonResLog("Will download {0} bytes for '{1}'", tmpTask.DownloadInfo.downloadSize, tmpTask.DownloadInfo.fileName);
BreakPointDownloader downloader = new BreakPointDownloader(tmpTask.DownloadInfo, new Dictionary <string, DownloadingTask>());
tmpTask.Downloader = downloader;
downloader.StartDownload();
}
catch (Exception ex)
{
CommonResLog("An error occured during download '{0}' due to {1}", tmpTask.DownloadInfo.fileName, ex);
tmpTask.DownloadInfo.result = DownloadResult.Failed;
DownloadCommonInitialABWithBreakDownloader(rrInfo);
}
}
else
{
CommonResLog("Response is not ok! for: {0}", tmpTask.DownloadInfo.url);
tmpTask.DownloadInfo.result = DownloadResult.Failed;
DownloadCommonInitialABWithBreakDownloader(rrInfo);
}
})
{
DisableCache = true
};
httprequest.Send();
}
public BreakPointDownloader(DownloadInfo info, Dictionary <string, DownloadingTask> tasks)
{
this.m_DownloadInfo = info;
//DebugUtil.Log("start breakpoint download:" + this.m_DownloadInfo.tempPath);
}
public DownloadingTask(DownloadInfo info)
{
this.DownloadInfo = info;
}