public void Start(string root, string fillname, Action <HttpDownload, long> update = null, Action <HttpDownload, bool> finish = null, Action <HttpDownload, enDownloadErrorState> error = null)
{
Abort();
Root = root;
LocalName = fillname;
IsDone = false;
Length = 0;
CompleteLength = 0;
update_callback = update;
finish_callback = finish;
error_callback = error;
ErrorCode = enDownloadErrorState.None;
m_content = new DownLoadContent(FullName);
Download();
}
private void OnFinish()
{
lock (lock_obj){
if (m_content != null)
{
m_content.State = enDownloadState.Completed;
m_content.Close();
m_content = null;
}
if (m_httpwebrequest != null)
{
m_httpwebrequest.Abort();
m_httpwebrequest = null;
}
IsDone = true;
}
}
private void OnReadCallback(IAsyncResult ar)
{
try
{
lock (lock_obj){
DownLoadContent content = ar.AsyncState as DownLoadContent;
if (content.ResponseStream == null)
{
return;
}
int read = content.ResponseStream.EndRead(ar);
if (read > 0)
{
content.ContentFileStream.Write(content.Buffer, 0, read);
content.ContentFileStream.Flush();
CompleteLength += read;
if (update_callback != null)
{
update_callback(this, (long)read);
}
}
else
{
OnFinish();
if (finish_callback != null)
{
finish_callback(this, true);
}
return;
}
BeginRead(OnReadCallback);
}
}
catch (Exception e)
{
Debuger.LogError(e.Message);
OnFailed(enDownloadErrorState.DownloadError);
}
}
private void OnFailed(enDownloadErrorState state)
{
lock (lock_obj){
if (m_content != null)
{
m_content.State = enDownloadState.Failed;
m_content.Close();
m_content = null;
}
if (m_httpwebrequest != null)
{
m_httpwebrequest.Abort();
m_httpwebrequest = null;
}
IsDone = true;
ErrorCode = state;
if (error_callback != null)
{
error_callback(this, ErrorCode);
}
}
}