LM Lutron telnet listener

[imprashant]

Try this query function:

Code:

function query(req, out)
  if not sock then
    return
  end

  sock:send(req .. '\r\n')
  local res, err = sock:receive()

  if not res then
    return close(err)
  end

  local pos = res:find('~')
  if not pos then
    return close('invalid reply1 ' .. res)
  end

  res = res:sub(pos)

  if res:sub(2, #req) ~= req:sub(2) then
    return close('invalid reply2 ' .. res)
  end

  local val = res:sub(#req + 2)
  log('response', req, out, val)
  val = tonumber(val)

  if val then
    grp.checkupdate(out, val)
  end
end

Now this is working great, but still sometimes are status update is immediate, but  many times it is taking significant amount of time to update.