C# ReceiveAsync Error
<p>Im currently developing an appserver. I would like to use AcceptAsync method. I got error "Object reference not set to instance of object." when calling ReceiveAsync method. If there any come up with this problem and got the solution to it?</p>

<pre><code>public class AppServer
{
    public void Start()
    {
        Socket serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
        serverSocket.Bind(new IPEndPoint(IPAddress.Any, 12345));
        serverSocket.Listen(100);

        SocketAsyncEventArgs e = new SocketAsyncEventArgs();
        e.Completed += new EventHandler&lt;SocketAsyncEventArgs&gt;(e_Completed);

        bool raiseEvent = serverSocket.AcceptAsync(e);
        if (!raiseEvent)
            AcceptCallback(e);
    }

    void e_Completed(object sender, SocketAsyncEventArgs e)
    {
        AcceptCallback(e);
    }

    private void AcceptCallback(SocketAsyncEventArgs e)
    {
        SocketAsyncEventArgs readEventArgs = new SocketAsyncEventArgs();
        readEventArgs.Completed += new EventHandler&lt;SocketAsyncEventArgs&gt;(readEventArgs_Completed);

        Socket clientSocket = e.AcceptSocket;
        bool raiseEvent = clientSocket.ReceiveAsync(readEventArgs); // &lt;-- Error goes here
        if (!raiseEvent)
            ReceiveCallback(readEventArgs);
    }

    void readEventArgs_Completed(object sender, SocketAsyncEventArgs e)
    {
        ReceiveCallback(e);
    }

    private void ReceiveCallback(SocketAsyncEventArgs e)
    {

    }
}
</code></pre>
