a = io.read()
if (a == "1")
then
local component = require("component")
local event = require("modem")
local m = component.modem -- get primary modem component
m.open(123)
print(m.isOpen(123)) -- true
m.broadcast(321, "this is a test")
local _, _, from, port, _, message = event.pull("modem_message")
print("Got a message from " .. from .. " on port " .. port .. ": " .. tostring(message))
else
local component = require("component")
local event = require("relay")
local m = component.modem -- get primary modem component
m.open(321)
print(m.isOpen(321)) -- true
m.broadcast(123, "this is a test")
local _, _, from, port, _, message = event.pull("modem_message")
print("Got a message from " .. from .. " on port " .. port .. ": " .. tostring(message))
end