defmodule P2pChat.Transport.TunTap do
  use GenServer

  defstruct [:tun_fd]

  @impl true
  def init(args) do
    {:ok, io_device} = setup_tap_device()
    {:ok, {}}
  end

  @impl true
  def terminate(_reason, state) do
    
  end

  def setup_tap_device(name \\ "tunP2P") do
    {:ok, io_device} = :file.open(~c"/dev/net/tun", [:read, :write, :raw])
    :ok = :file.close(io_device)
    :ok
  end

  def teardown_tap_device(io_device) do
  end

  #
  # Client API
  # 
  
  def start_link(args) do
    GenServer.start_link(__MODULE__, args)
  end
end