public virtual bool SendCompleted()
        {
            m_activeDT  = DateTime.UtcNow;
            m_sendAsync = false;
            AsyncSendBufferManager asyncSendBufferManager = m_asyncSocketUserToken.SendBuffer;

            asyncSendBufferManager.ClearFirstPacket(); //清除已发送的包
            int offset = 0;
            int count  = 0;

            if (asyncSendBufferManager.GetFirstPacket(ref offset, ref count))
            {
                m_sendAsync = true;
                return(m_asyncSocketServer.SendAsyncEvent(m_asyncSocketUserToken.ConnectSocket, m_asyncSocketUserToken.SendEventArgs,
                                                          asyncSendBufferManager.DynamicBufferManager.Buffer, offset, count));
            }
            else
            {
                return(SendCallback());
            }
        }