Go library for tracking Amazon Dash buttons

This simple library sniffs on the network for ARP packets sent by a Amazon Dash button.

Usage:

import "github.com/rhuss/dash"

iface, err := net.InterfaceByName("eth0")
if err != nil {
  panic(err)
}

eventChannel := dash.WatchButton(iface, "ac:63:11:22:33:44")
  for {
	select {
	case <- *eventChannel:
		log.Print("Button pressed !")
	}
}

You should ensure that you add an outbound firewall rule to forbid the button to contact Amazon, otherwise you might end up to eat your dog's food delivered by Amazon yourself ;-)

The single dependency for this package is on google/gopacket which is a wrapper around pcap. So cross compiling might become difficult, although this library is perfectly suited to be used as part of an home automation system e.g. by running it on a RaspberryPi.