tower

p = peripheral.find("bitnet_tower")
tArgs = {...}

function receive()
 print("Waiting message...")
 while true do
  event, side, message, distance = os.pullEvent("bitnet_message")
  print("\nReceived message: "..message)
  print("Received from "..distance.." blocks away")
 end
end

function pressKeyStop()
 print("Press any key to stop")
 os.pullEvent("char")
end

function send()
 print("What do I send?")
 p.transmit(read())
end

print("Send or Receive mode?\n(Use 'send' or 'receive')")

if tArgs[1] == "send" then
 send()
elseif tArgs[1] == "receive" then
 parallel.waitForAny(pressKeyStop, receive)
else print("What?")
end