Redstone Event

local event = require('event')
local internet = require('internet')
local running = true
local char_stop = string.byte("q")

local myEventHandlers = {}
local arg={...}

function myEventHandlers.key_up(address, char, code, playerName)
  if (char == char_stop) then
    running = false
    print('bye ' .. playerName .. '!')
  end
end

function myEventHandlers.redstone_changed(_, address, side)
  local brightness = 1;
  local str = "on"
  if side > 0 then
    brightness = 1
    str = "on"
  else
    brightness = 0
    str = "off"
  end
  print (brightness)
  local handle = internet.open(arg[1], tonumber(arg[2]))
  handle:write(str)
  handle:close()
end

function handleEvent(eventID, ...)
  local event = myEventHandlers[eventID]
  if (event) then
    event(...)
  end
end

while running do
  handleEvent(event.pull())
end