void ReadFileAsync()
{
_fs.BeginRead(_buffer, 0, _buffer.Length, _ =>
{
try
{
var count = _fs.EndRead(_);
var ee = new DataProgressEventArgs(_fs.Length, _fs.Position);
var op = Context.Operation;
if (op == null)
{
OnProgressChanged(ee);
}
else
{
op.Post(__ => OnProgressChanged(ee), null);
}
if (count == 0)
{
_fs.Close();
WriteFooterAsync();
}
else
{
AsyncData.AsyncStreamWrite(_buffer, 0, count, true, __ => ReadFileAsync());
}
}
catch (Exception ex)
{
AsyncData.Exception = ex;
AsyncData.NotifyAsyncComplete();
}
}, null);
}
protected virtual void WriteBodyAsync()
{
var op = Context.Operation;
//一个文件失败，则把整个过程看作失败
try
{
_fs = FileInfo.OpenRead();
_buffer = new byte[AsyncData.HttpContext.Client.Setting.WriteBufferSize];
var ee = new DataProgressEventArgs(_fs.Length, 0L);
if (op == null)
{
OnProgressChanged(ee);
}
else
{
op.Post(__ => OnProgressChanged(ee), null);
}
ReadFileAsync();
}
catch (Exception ex)
{
AsyncData.Exception = ex;
AsyncData.NotifyAsyncComplete();
}
}
/// <summary>
/// 通知异步的操作完成
/// </summary>
protected virtual void CallCompleteCallback()
{
if (AsyncData != null)
{
AsyncData.NotifyAsyncComplete();
}
}
void BeginReadSourceStream()
{
Stream.BeginRead(_buffer, 0, _buffer.Length, _ =>
{
try
{
var count = Stream.EndRead(_);
if (count > 0)
{
AsyncData.AsyncStreamWrite(_buffer, 0, count, true, __ => BeginReadSourceStream());
}
else
{
AsyncData.NotifyAsyncComplete();
}
}
catch (Exception ex)
{
AsyncData.Exception = ex;
AsyncData.NotifyAsyncComplete();
}
}, this);
}