/// <summary>
/// 下载失败
/// </summary>
void OnFailed(emErrorCode code)
{
lock (lock_obj_)
{
if (content_ != null)
{
content_.State = DownloadContent.emState.Failed;
content_.Close();
content_ = null;
}
if (http_request_ != null)
{
http_request_.Abort();
http_request_ = null;
}
IsDone = true;
ErrorCode = code;
if (error_callback_ != null)
{
error_callback_(this);
}
}
}
/// <summary>
///
/// </summary>
void _OnReadCallback(IAsyncResult ar)
{
try
{
lock (lock_obj_)
{
DownloadContent rs = ar.AsyncState as DownloadContent;
if (rs.ResponseStream == null)
{
return;
}
int read = rs.ResponseStream.EndRead(ar);
if (read > 0)
{
rs.FS.Write(rs.Buffer, 0, read);
rs.FS.Flush();
CompletedLength += read;
if (notify_callback_ != null)
{
notify_callback_(this, (long)read);
}
}
else
{
OnFinish();
if (notify_callback_ != null)
{
notify_callback_(this, (long)read);
}
return;
}
_BeginRead(new AsyncCallback(_OnReadCallback));
}
}
catch (WebException e)
{
Debug.LogWarning("HttpAsyDownload - \"" + LocalName + "\" download failed!"
+ "\nMessage:" + e.Message);
OnFailed(emErrorCode.DownloadError);
}
catch (System.Exception e)
{
Debug.LogWarning("HttpAsyDownload - \"" + LocalName + "\" download failed!"
+ "\nMessage:" + e.Message);
OnFailed(emErrorCode.DownloadError);
}
}
/// <summary>
/// 下载完成
/// </summary>
void OnFinish()
{
lock (lock_obj_)
{
if (content_ != null)
{
content_.State = DownloadContent.emState.Completed;
content_.Close();
content_ = null;
}
if (http_request_ != null)
{
http_request_.Abort();
http_request_ = null;
}
IsDone = true;
}
}
/// <summary>
/// 开始下载
/// </summary>
public void Start(string root, string local_file_name
, Action <HttpAsyDownload, long> notify = null
, Action <HttpAsyDownload> error_cb = null)
{
lock (lock_obj_)
{
Abort();
Root = root;
LocalName = local_file_name;
IsDone = false;
ErrorCode = emErrorCode.None;
notify_callback_ = notify;
error_callback_ = error_cb;
content_ = new DownloadContent(FullName, false);
CompletedLength = 0;
Length = 0;
_Download();
}
}