// 中止所有下载任务
public void AbortAllDownloadTask()
{
pendingDownloads.Clear();
List <DownloadingTask> list = new List <DownloadingTask>(this.m_DownloadingTasks.Values);
for (int i = 0; i < list.Count; i++)
{
DownloadingTask task = list[i];
if (task != null)
{
HTTPRequest headRequest = task.HeadRequest;
if (headRequest != null)
{
//EventManager.Instance.Trigger<SDKEvents.DownloadFileEvent>().Data(task.DownloadInfo.fileName, "head_abort", 0, task.DownloadInfo.retry.ToString()).Trigger();
headRequest.Abort();
}
if (task.Downloader != null)
{
//EventManager.Instance.Trigger<SDKEvents.DownloadFileEvent>().Data(task.DownloadInfo.fileName, "abort", task.DownloadInfo.downloadedSize, task.DownloadInfo.retry.ToString()).Trigger();
task.Downloader.CancelDownload(false);
}
task.DownloadInfo.isFinished = true;
task.DownloadInfo.retry = 0;//保证不会再被添加到下载队列里了
}
}
this.m_DownloadingTasks.Clear();
pendingDownloads.Clear();
downloadThreads = 0;
}
// 开始一个下载任务
private void StartTask(DownloadInfo taskinfo)
{
if (this.m_DownloadingTasks.ContainsKey(taskinfo.fileName))
{
Debug.LogErrorFormat("task already in progress :{0}", taskinfo.fileName);
}
else
{
DownloadingTask value = new DownloadingTask(taskinfo);
this.m_DownloadingTasks[taskinfo.fileName] = value;
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;
}
HttpDownload(value);
}
}
// 新建下载器开始下载
private void HttpDownload(DownloadingTask task)
{
Debug.LogFormat("Start Download:{0}", task.DownloadInfo.fileName);
DownloadingTask tmpTask = task;
HTTPRequest httprequest = new HTTPRequest(new Uri(tmpTask.DownloadInfo.url), HTTPMethods.Head, (req, rep) =>
{
switch (req.State)
{
case HTTPRequestStates.ConnectionTimedOut:
case HTTPRequestStates.TimedOut:
//EventManager.Instance.Trigger<SDKEvents.DownloadFileEvent>().Data(tmpTask.DownloadInfo.fileName, "head_timeout", 0, tmpTask.DownloadInfo.retry.ToString()).Trigger();
break;
case HTTPRequestStates.Aborted:
//EventManager.Instance.Trigger<SDKEvents.DownloadFileEvent>().Data(tmpTask.DownloadInfo.fileName, "head_abort", 0, tmpTask.DownloadInfo.retry.ToString()).Trigger();
break;
case HTTPRequestStates.Error:
//EventManager.Instance.Trigger<SDKEvents.DownloadFileEvent>().Data(tmpTask.DownloadInfo.fileName, "head_failure", 0, tmpTask.DownloadInfo.retry.ToString()).Trigger();
break;
case HTTPRequestStates.Finished:
if (rep != null && rep.StatusCode >= 200 && rep.StatusCode < 400)
{
//EventManager.Instance.Trigger<SDKEvents.DownloadFileEvent>().Data(tmpTask.DownloadInfo.fileName, "head_finish", 0, tmpTask.DownloadInfo.retry.ToString()).Trigger();
}
else
{
//EventManager.Instance.Trigger<SDKEvents.DownloadFileEvent>().Data(tmpTask.DownloadInfo.fileName, "head_failure", 0, tmpTask.DownloadInfo.retry.ToString()).Trigger();
}
break;
}
if (!this.m_DownloadingTasks.ContainsKey(tmpTask.DownloadInfo.fileName))
{
Debug.LogErrorFormat("Cancelled Task :{0}", tmpTask.DownloadInfo.fileName);
return;
}
tmpTask.HeadRequest = null;
if (rep == null)
{
Debug.LogErrorFormat("Download failed due to network for :{0}", tmpTask.DownloadInfo.fileName);
tmpTask.DownloadInfo.result = DownloadResult.ServerUnreachable;
RetryDownload(tmpTask.DownloadInfo);
}
else if (rep.StatusCode == 200)
{
try
{
string firstHeaderValue = rep.GetFirstHeaderValue("Content-Length");
tmpTask.DownloadInfo.downloadSize = int.Parse(firstHeaderValue);
Debug.LogFormat("Will download {0} bytes for '{1}'", tmpTask.DownloadInfo.downloadSize, tmpTask.DownloadInfo.fileName);
BreakPointDownloader downloader = new BreakPointDownloader(tmpTask.DownloadInfo, this.m_DownloadingTasks);
tmpTask.Downloader = downloader;
downloader.StartDownload();
}
catch (Exception ex)
{
Debug.LogErrorFormat("An error occured during download '{0}' due to {1}", tmpTask.DownloadInfo.fileName, ex);
tmpTask.DownloadInfo.result = DownloadResult.Failed;
RetryDownload(tmpTask.DownloadInfo);
}
}
else
{
Debug.LogErrorFormat("Response is not ok! for: {0}", tmpTask.DownloadInfo.url);
tmpTask.DownloadInfo.result = DownloadResult.Failed;
RetryDownload(tmpTask.DownloadInfo);
}
})
{
DisableCache = true
};
this.m_DownloadingTasks[tmpTask.DownloadInfo.fileName].HeadRequest = httprequest;
//EventManager.Instance.Trigger<SDKEvents.DownloadFileEvent>().Data(tmpTask.DownloadInfo.fileName, "head_start", 0, tmpTask.DownloadInfo.retry.ToString()).Trigger();
httprequest.Send();
}