UDP SOCKET

[Angeles]

Hello:
We have several devices on the network that send packages continuously: energy meters.
We need to read these packages and we have tried using the following scritp:

if not server then
  require('socket')
  server = socket.udp()
  server:setsockname('*', 8891)
  server:settimeout(1)
end

data = server:receive()
if data then
  loghex(data)
end


If we log setsockename address already in use.
Is this method correct to receive that kind of data from network.
Thanks.