private void Close(MultiAsyncResult multiResult)
{
_bufferBuilder.Append(s_crlf);
_bufferBuilder.Append(s_DASHDASH);
_bufferBuilder.Append(_boundaryBytes);
_bufferBuilder.Append(s_DASHDASH);
_bufferBuilder.Append(s_crlf);
Flush(multiResult);
}
internal Stream EndGetContentStream(IAsyncResult result)
{
object o = MultiAsyncResult.End(result);
if (o is Exception e)
{
ExceptionDispatchInfoThrower.Throw(e);
}
return((Stream)o);
}
internal IAsyncResult BeginClose(AsyncCallback callback, object state)
{
MultiAsyncResult multiResult = new MultiAsyncResult(this, callback, state);
Close(multiResult);
multiResult.CompleteSequence();
return(multiResult);
}
internal IAsyncResult BeginGetContentStream(AsyncCallback callback, object state)
{
MultiAsyncResult multiResult = new MultiAsyncResult(this, callback, state);
Stream s = GetContentStream(multiResult);
if (!(multiResult.Result is Exception))
{
multiResult.Result = s;
}
multiResult.CompleteSequence();
return(multiResult);
}
protected static void OnWrite(IAsyncResult result)
{
if (!result.CompletedSynchronously)
{
MultiAsyncResult multiResult = (MultiAsyncResult)result.AsyncState;
BaseWriter thisPtr = (BaseWriter)multiResult.Context;
try
{
thisPtr._stream.EndWrite(result);
multiResult.Leave();
}
catch (Exception e)
{
multiResult.Leave(e);
}
}
}
private Stream GetContentStream(MultiAsyncResult multiResult)
{
if (_isInContent)
{
throw new InvalidOperationException(Strings.MailWriterIsInContent);
}
_isInContent = true;
CheckBoundary();
_bufferBuilder.Append(s_crlf);
Flush(multiResult);
ClosableStream cs = new ClosableStream(new EightBitStream(_stream, _shouldEncodeLeadingDots), _onCloseHandler);
_contentStream = cs;
return(cs);
}
protected void Flush(MultiAsyncResult multiResult)
{
if (_bufferBuilder.Length > 0)
{
if (multiResult != null)
{
multiResult.Enter();
IAsyncResult result = _stream.BeginWrite(_bufferBuilder.GetBuffer(), 0,
_bufferBuilder.Length, s_onWrite, multiResult);
if (result.CompletedSynchronously)
{
_stream.EndWrite(result);
multiResult.Leave();
}
}
else
{
_stream.Write(_bufferBuilder.GetBuffer(), 0, _bufferBuilder.Length);
}
_bufferBuilder.Reset();
}
}
internal void EndClose(IAsyncResult result)
{
MultiAsyncResult.End(result);
_stream.Close();
}