An experimental adapter to track network presence. A production quality alternative is https://github.com/flatsiedatsie/webthings-network-presence-detection
Network Monitor
- runs on Linux only and possibly only on Debian derived disributions - patches are welcome
- is aware of multiple IPv4 networks and can monitor devices on each
- tracks seconds, minutes, hours and days since a device was last detected
- can change the units of presence expiry between seconds, miuntes, hours and days
- is a playground for me to explore ideas
Installation pre-requisites
-
install arping
sudo apt install arping -
add a line similar to the following into sudoers - check both the user id that runs the adaptor and the path to the arping executable
webthings ALL= NOPASSWD: /usr/sbin/arping