Hello, does anybody can give me a hint how I can send this piece of code after statup of the XBox to a client?
Thanks Thomas

private static void WakeOnLan(byte[] mac)
{
    // WOL packet is sent over UDP 255.255.255.0:40000.
    UdpClient client = new UdpClient();
    client.Connect(IPAddress.Broadcast, 40000);

    // WOL packet contains a 6-bytes trailer and 16 times a 6-bytes sequence containing the MAC address.
    byte[] packet = new byte[17*6];

    // Trailer of 6 times 0xFF.
    for (int i = 0; i < 6; i++)
        packet[i] = 0xFF;

    // Body of magic packet contains 16 times the MAC address.
    for (int i = 1; i <= 16; i++)
        for (int j = 0; j < 6; j++)
            packet[i*6 + j] = mac[j];

    // Send WOL packet.
    client.Send(packet, packet.Length);
}

You have no access to the raw UDP functionality on the Xbox.

That, and you would have to start your game before being able to execute any code; there is no way to have "startup projects" on the Xbox. Keep in mind this would have to be for personal use only too, since there is only LIVE networking in XBLIGs.

OK and Thanks, I understood that we don't have access to the core of the Box, but it should be possible to write a "game" which I can start at startup (like the Media Center). The problem is to get a socket. I want to start a Windows Home Server from hibernat. I could write a client server application but if I install the server on the WHS the server is sleeping too. I believe MS didn't tought deep enough when they dev. the extender of the XBox.

TomDooley2005:

I believe MS didn't tought deep enough when they dev. the extender of the XBox.

No, it's because there's no reason to be able to do this on the Xbox.