/// <summary>
/// 重试下载
/// <param name="ID">任务ID</param>
/// </summary>
public void ReDownload(int ID)
{
if (SubTasks.ContainsKey(ID))
{
if (SubTasks[ID].State != TaskState.载完成)
{
HttpDownload download = new HttpDownload
{
ID = ID,
DownLoadUrl = SubTasks[ID].DownLoadUrl,
FileName = SubTasks[ID].FileName,
FilePath = SubTasks[ID].FilePath,
ThreadNum = 10,
From = SubTasks[ID].From,
To = SubTasks[ID].To
};
SubTasks[ID].StopDownload();
download.Start();
download.TaskCompletedEvent += TaskCompletedEvent;
SubTasks[ID] = download;
}
}
}
public override void Start()
{
if (!(FilePath != null && FileName != null && SubTaskNum != 0))
{
return;
}
State = TaskState.加速下载中;
try
{
HttpWebRequest httpWebRequest = WebRequest.Create($"https://www.baidupcs.com/rest/2.0/pcs/stream?method=download&access_token={Program.config.Access_Token}&path=" + Uri.EscapeDataString($"{Info.path}")) as HttpWebRequest;
HttpWebResponse httpWebResponse = httpWebRequest.GetResponse() as HttpWebResponse;
ContentLength = httpWebResponse.ContentLength;
long q = ContentLength / SubTaskNum;
for (int i = 0; i < SubTaskNum; i++)
{
if (i == (SubTaskNum - 1))
{
var LastSubTask = new HttpDownload
{
ID = i,
DownLoadUrl = $"https://www.baidupcs.com/rest/2.0/pcs/stream?method=download&access_token={Program.config.Access_Token}&path=" + Uri.EscapeDataString($"{Info.path}"),
FilePath = FilePath,
FileName = FileName + ".tmp" + i.ToString(),
ThreadNum = 12,
From = q * i,
To = ContentLength
};
LastSubTask.Start();
LastSubTask.TaskCompletedEvent += TaskCompletedEvent;
SubTasks.Add(i, LastSubTask);
break;
}
var SubTask = new HttpDownload
{
ID = i,
DownLoadUrl = $"https://www.baidupcs.com/rest/2.0/pcs/stream?method=download&access_token={Program.config.Access_Token}&path=" + Uri.EscapeDataString($"{Info.path}"),
FilePath = FilePath,
FileName = FileName + ".tmp" + i.ToString(),
ThreadNum = 12,
From = q * i,
To = (q * (i + 1)) - 1
};
SubTask.Start();
SubTask.TaskCompletedEvent += TaskCompletedEvent;
SubTasks.Add(i, SubTask);
}
}
catch (Exception ex)
{
if (ex is WebException)
{
//404 ERROR
if (ex.Message.Contains("404"))
{
MessageBox.Show("下载失败! 文件名有非法字符,请使用云管家重命名后再下载");
return;
}
//403 ERROR
if (ex.Message.Contains("403"))
{
MessageBox.Show("下载失败! 百度抽风了,你可以换个账号或者等几天再下载\r\nPS:一般来说等一天就好");
return;
}
}
MessageBox.Show("下载时遇到未知错误: " + ex.Message + "\r\n请联系作者");
}
}
