socketasynceventargs的有关问题

public void StartAccept(SocketAsyncEventArgs acceptEventArg)
    {
        if (acceptEventArg == null)
        {
            acceptEventArg = new SocketAsyncEventArgs();
            acceptEventArg.Completed += new EventHandler<SocketAsyncEventArgs>(AcceptEventArg_Completed);
        }
        else
        {
            // socket must be cleared since the context object is being reused
            acceptEventArg.AcceptSocket = null;
        }

        m_maxNumberAcceptedClients.WaitOne();
        bool willRaiseEvent = listenSocket.AcceptAsync(acceptEventArg);
        if (!willRaiseEvent)
        {
            ProcessAccept(acceptEventArg);
        }
    }

    private void ProcessAccept(SocketAsyncEventArgs e)
    {
        Interlocked.Increment(ref m_numConnectedSockets);
        Console.WriteLine("Client connection accepted. There are {0} clients connected to the server",
            m_numConnectedSockets);

        // Get the socket for the accepted client connection and put it into the 
        //ReadEventArg object user token
        SocketAsyncEventArgs readEventArgs = m_readWritePool.Pop();
        ((AsyncUserToken)readEventArgs.UserToken).Socket = e.AcceptSocket;

        // As soon as the client is connected, post a receive to the connection
        bool willRaiseEvent = e.AcceptSocket.ReceiveAsync(readEventArgs);
        if(!willRaiseEvent){
            ProcessReceive(readEventArgs);
        }

        // Accept the next connection request
        StartAccept(e);
    }