/// <summary>
/// 开始处理下载任务。
/// </summary>
/// <param name="task">要处理的下载任务。</param>
/// <returns>开始处理任务的状态。</returns>
public StartTaskStatus Start(DownloadTask task)
{
if (task == null)
{
throw new GameFrameworkException("Task is invalid.");
}
m_Task = task;
m_Task.Status = DownloadTaskStatus.Doing;
string downloadFile = Utility.Text.Format("{0}.download", m_Task.DownloadPath);
try
{
if (File.Exists(downloadFile))
{
m_FileStream = File.OpenWrite(downloadFile);
m_FileStream.Seek(0, SeekOrigin.End);
m_StartLength = m_SavedLength = (int)m_FileStream.Length;
m_DownloadedLength = 0;
}
else
{
string directory = Path.GetDirectoryName(m_Task.DownloadPath);
if (!Directory.Exists(directory))
{
Directory.CreateDirectory(directory);
}
m_FileStream = new FileStream(downloadFile, FileMode.Create, FileAccess.Write);
m_StartLength = m_SavedLength = m_DownloadedLength = 0;
}
if (DownloadAgentStart != null)
{
DownloadAgentStart(this);
}
if (m_StartLength > 0)
{
m_Helper.Download(m_Task.DownloadUri, m_StartLength, m_Task.UserData);
}
else
{
m_Helper.Download(m_Task.DownloadUri, m_Task.UserData);
}
return(StartTaskStatus.CanResume);
}
catch (Exception exception)
{
DownloadAgentHelperErrorEventArgs downloadAgentHelperErrorEventArgs = DownloadAgentHelperErrorEventArgs.Create(exception.Message);
OnDownloadAgentHelperError(this, downloadAgentHelperErrorEventArgs);
ReferencePool.Release(downloadAgentHelperErrorEventArgs);
return(StartTaskStatus.UnknownError);
}
}
/// <summary>
/// 开始处理下载任务。
/// </summary>
/// <param name="task">要处理的下载任务。</param>
public void Start(DownloadTask task)
{
if (task == null)
{
throw new AshException("Task is invalid.");
}
m_Task = task;
m_Task.Status = DownloadTaskStatus.Doing;
string downloadFile = string.Format("{0}.download", m_Task.DownloadPath);
try
{
if (File.Exists(downloadFile))
{
m_FileStream = File.OpenWrite(downloadFile);
m_FileStream.Seek(0, SeekOrigin.End);
m_StartLength = m_SavedLength = (int)m_FileStream.Length;
m_DownloadedLength = 0;
}
else
{
string directory = Path.GetDirectoryName(m_Task.DownloadPath);
if (!Directory.Exists(directory))
{
Directory.CreateDirectory(directory);
}
m_FileStream = new FileStream(downloadFile, FileMode.Create, FileAccess.Write);
m_StartLength = m_SavedLength = m_DownloadedLength = 0;
}
if (DownloadAgentStart != null)
{
DownloadAgentStart(this);
}
if (m_StartLength > 0)
{
m_Helper.Download(m_Task.DownloadUri, m_StartLength, m_Task.UserData);
}
else
{
m_Helper.Download(m_Task.DownloadUri, m_Task.UserData);
}
}
catch (Exception exception)
{
OnDownloadAgentHelperError(this, new DownloadAgentHelperErrorEventArgs(exception.Message));
}
}