Check connected tcp ports

[buuuudzik]

Hello

do somebody know:
- how can I check currently connected tcp ports?
- how can I reach the socket which is created and permanent used in resident script via event script?

The solution is necessary for Sony Bravia TV. I must have permanent tcp connection to have ability to read status when TV is off. So for this solution I've prepared the resident script 0s:

Code:

require('socket')

if not sock_bravia then
-- bravia IP
ip = '192.168.2.102'

sock_bravia = socket.tcp()
sock_bravia:settimeout(3)

res, err = sock_bravia:connect(ip, 20060)
end

-- power-status
cmd = '*SEPOWR################\n' -- Check status power

if res then
 res, err = sock_bravia:send(cmd)

 if res then
   res, err = sock_bravia:receive()

   if res then
     log('receive OK: ' .. tostring(res)) -- received ok
   else
     log('receive failed: ' .. tostring(err)) -- receive failed
   end
 else
   log('send failed: ' .. tostring(err)) -- send failed
 end
else
 log('connect failed: ' .. tostring(err)) -- connect failed
end

os.sleep(5)

But sometimes I want send command e.g. switch on but from event-based script. How can I reach currently port from other script?