blob: 6111741bfa1ae1aa6469c0d924a834a5d22fd728 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
<!--
SPDX-FileCopyrightText: 2020 Ethel Morgan
SPDX-License-Identifier: CC0-1.0
-->
# Catbus Wake-On-LAN
A simple daemon that emits [Wake-On-LAN "magic packets"](https://en.wikipedia.org/wiki/Wake-on-LAN) when triggered by [Catbus](https://ethulhu.co.uk/catbus).
## Config
```json
{
"mqttBroker": "tcp://broker.local:1883",
"devices": {
"TV": {
"mac": "aa:bb:cc:dd:ee:ff",
"topic": "home/living-room/tv/power"
}
}
}
```
## Wake-On-LAN
Wake-On-LAN is a protocol to wake or boot devices over LAN using "magic packets".
The magic packet is, in big endian:
- 6 bytes of `0xFF`.
- the MAC address of the device you are waking, 16 times.
For example, for a device with a MAC address `aa:bb:cc:dd:ee:ff`, the packet will be, in hex:
```
ffffffffffffaabbccddeeffaabbccddeeffaabbccddeeffaabbccddeeffaabbccddeeffaabbccddeeffaabbccddeeffaabbccddeeffaabbccddeeffaabbccddeeffaabbccddeeffaabbccddeeffaabbccddeeffaabbccddeeffaabbccddeeffaabbccddeeff
```
This is broadcast over UDP on port 9.
|
