gistfile1.ex

```
def init(args) do
	Logger.debug "Starting multicast client with args: #{inspect args}"
	case :gen_udp.open(@dvb_client_port, @client_socket_opts) do
		{:ok, client_socket} ->
			state = %{
				client_socket: client_socket,
				packets: 0,
				last_received_time: nil
			}
			{:ok, state, 1000}
		{:error, reason} ->
			Logger.error "Can not create socket, reason: #{inspect reason}"
			{:stop, reason}
		_ ->
			Logger.error "Unkown return message"
			{:stop, :unkown_return_message}
	end
end
def handle_info(:timeout, %{client_socket: client_socket} = state) do
	Logger.debug "Received message: #{inspect state}"
	case :gen_udp.recv(client_socket, 0) do
		{:ok, {address, port, packet}} ->
			Logger.debug "Address: #{inspect address}, Port: #{inspect port}, Packet: #{inspect packet}"
		{:error, reason} ->
			Logger.debug "Error, reason: #{reason}"
	end
	{:noreply, state, @send_interval}
end
```

Error message:

```
15:43:31.573 [debug] Error, reason: einval
```