local createNet = require("/apis/net")
local createVersion = require("/apis/libversion")

local MODEM_DETECTION_TIME = 3

if not peripheral.find("modem") then
	print("Warning: modem not found!")
end

-- TOFIX: os.sleep should not be used anymore since we are in the main eventloop here.
while not peripheral.find("modem") do
	os.sleep(MODEM_DETECTION_TIME)
end

local net = createNet()

net.serve("ping", function(message, reply)
	if message == "ping" then
		reply("pong")
	end
end)

print("ping-server v" .. createVersion().forSelf() .. " started.")