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36 lines
1.1 KiB
36 lines
1.1 KiB
3 years ago
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# KnockKnock
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A Windows Service for providing services on-demand.
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## Overview
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KnockKnock acts as a TCP proxy, accepting connections and then forwarding all
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traffic between a client and upstream. It allows you to register commands to
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run when the service is idle (no open connections) and active (incoming
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connection(s)).
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For example, when forwarding connections to a Hyper-V VM, you could suspend the
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VM when there are no active connections, and resume it whenever a user attempts
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to connect.
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(Personally, this is how I use it--allowing my development VM to be suspended
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automatically when I am not connected to it through RDP.)
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## TODO / Limitations
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This is basically the minimum viable app that solves my own problem. I slapped
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it together in less than an hour.
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Configuration is hardcoded: it only forwards :1234 -> 10.200.0.10:3306; it
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always runs `SuspendVM` and `ResumeVM` against the `Debian` Hyper-V machine.
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The socket code is kind of janky and some activity patterns will make it
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explode.
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It works for me to proxy a Microsoft Remote Desktop Connection session through
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to a Hyper-V VM available on-demand.
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## License
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None. Do not redistribute.
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