I need to start an arbitrary daemon when at least one WiFi network connection exists (from clients). And stop an arbitrary daemon when there is no more connections to this AP. How to do it efficiently? For now I consider polling the results of hostapd_cli all_sta, but it seems odd. I'm sure there must be some system event which can be hooked.


As @beemaster said run this:

hostapd_cli -a '/onHostapdChange.sh'

With the script: onHostapdChange.sh

if [[ $2 == "AP-STA-CONNECTED" ]]
  echo "someone has connected with mac id $3 on $1"

if [[ $2 == "AP-STA-DISCONNECTED" ]]
  echo "someone has disconnected with mac id $3 on $1"

For now I've found the following solution:

hostapd_cli -a 'some_script'

Where script receives network interface name and event type as an arguments. This must be started after hostapd daemon. Also it needs ctrl_interface to be set in hostapd.conf.

  • This is also called on closed connection! – maxisme Dec 2 '16 at 18:59

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.