private PosList <ArraySegment <byte> > GetSendingItems()
{
if (m_SendingItems == null)
{
m_SendingItems = new PosList <ArraySegment <byte> >();
}
return(m_SendingItems);
}
protected abstract void SendInternal(PosList <ArraySegment <byte> > items);
protected override void SendInternal(PosList <ArraySegment <byte> > items)
{
if (m_SocketEventArgsSend == null)
{
m_SocketEventArgsSend = new SocketAsyncEventArgs();
m_SocketEventArgsSend.Completed += new EventHandler <SocketAsyncEventArgs>(Sending_Completed);
}
bool raiseEvent;
try
{
if (items.Count > 1)
{
if (m_SocketEventArgsSend.Buffer != null)
{
m_SocketEventArgsSend.SetBuffer(null, 0, 0);
}
m_SocketEventArgsSend.BufferList = items;
}
else
{
var currentItem = items[0];
try
{
if (m_SocketEventArgsSend.BufferList != null)
{
m_SocketEventArgsSend.BufferList = null;
}
}
catch//a strange NullReference exception
{
}
m_SocketEventArgsSend.SetBuffer(currentItem.Array, currentItem.Offset, currentItem.Count);
}
raiseEvent = Client.SendAsync(m_SocketEventArgsSend);
}
catch (SocketException exc)
{
int errorCode;
errorCode = exc.ErrorCode;
if (EnsureSocketClosed() && !IsIgnorableSocketError(errorCode))
{
OnError(exc);
}
return;
}
catch (Exception e)
{
if (EnsureSocketClosed() && IsIgnorableException(e))
{
OnError(e);
}
return;
}
if (!raiseEvent)
{
Sending_Completed(Client, m_SocketEventArgsSend);
}
}