Ideomatic handeling of reconnect

[EmilSodergren]

Hi, i have a mqtt client loop that looks like the one described in the readme, i.e.

client, connection = Client::new(...);
client.subscribe("topic", qos);
for packet in connection.iter() {
    handle_packet_in_its_own_thread(packet);
}

This works well until the mqtt server hiccups and the connetction is lost. After the server is back up the connection loop reconnects as it should, but the resubscribe does not happen. What is the ideomatic way of handling this? Should I always set the clean_session=false on the client or is there a way to resubscribe from inside the connection loop?