Resident script - IP watchdog

[buuuudzik]

Hi, 
I need a resident script that ping an IP , and if does not receive any reply to open a actuator.
Please help 
Thanks a lot!

Here you are:

Code:

function socketping(ip, port, timeout)
 port = port or 80
 local sock = require('socket').tcp()
 sock:settimeout(timeout or 2)
 local res, err = sock:connect(ip, port)
 sock:close()
 
 return res, err
end


ip = '192.168.2.1'

if not socketping(ip) then grp.write('1/2/3', true) end