public bool MoveNext()
{
bool canMoveNext = false;
try
{
///Reduce new buffer times for background task
if (Current.IsNullOrEmpty())
{
Current = new byte[ChunkSize];
}
else
{
Array.Clear(Current, 0, Current.Length);
}
CurrentLength = targetStreams.Read(Current, 0, ChunkSize);
if (CurrentLength != 0)
{
Offset += CurrentLength;
canMoveNext = true;
}
else
{
if (streamLength != -1)
{
if (Offset < streamLength)
{
LogHelper.OnlineLogger.Error(string.Format("Cannot read any data before EOF, id={0}. {1}", targetStreams.GetHashCode(), HttpLayer.LogRequetId(logId)));
throw new WebException("Cannot read any data before EOF", WebExceptionStatus.UnknownError);
}
else
{
LogHelper.OnlineLogger.Debug(string.Format("Reach EOF, id={0}. {1}", targetStreams.GetHashCode(), HttpLayer.LogRequetId(logId)));
}
}
else
{
LogHelper.OnlineLogger.Warn(string.Format("Cannot read any data, Stream Length = -1, id={0}. {1}", targetStreams.GetHashCode(), HttpLayer.LogRequetId(logId)));
}
}
}
catch (EndOfStreamException ex)
{
LogHelper.OnlineLogger.Warn(string.Format("Reach end of stream {0}. {1}", ex.ToString(), HttpLayer.LogRequetId(logId)));
}
catch (ObjectDisposedException ex)
{
LogHelper.OnlineLogger.Warn(string.Format("Can not read disposed stream {0}. {1}" + ex.ToString(), HttpLayer.LogRequetId(logId)));
}
return(canMoveNext);
}