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I wonder if there's some sort of network packet that announces a computer going to sleep or waking up again.

If not, can you think of reasons why this would be a bad idea?

sunside
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2 Answers2

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Try looking into SNMP. There might be a setting for that already.

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Wake-on-LAN is an Ethernet computer networking standard that allows a computer to be turned on or woken up by a network message.

You can intercept sleep and wakeup events. See the following:
A useful utility - run a program before standby
WMI : Win32_PowerManagementEvent Class

harrymc
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  • This is why I am asking - I'm thinking about a way to inform a server (all devices for that matter) that a device has woken up. Otherwise a device might not notice. This could come in handy when it comes to waking up computers that don't support 'wake on unicast' etc. – sunside Nov 04 '10 at 19:33
  • OK : added some more stuff. – harrymc Nov 04 '10 at 20:10