All the subscribe methods return an ISubscriptionResult. It contains properties that describe the IExchange and IQueue used by the underlying IConsumer; these can be further manipulated using the advanced API IAdvancedBus if required.

You can cancel a subscriber at any time by calling Dispose on the ISubscriptionResult instance or on its ConsumerCancellation property:

var subscriptionResult = bus.Subscribe<MyMessage>("sub_id", MyHandler);
subscriptionResult.Dispose();

This will stop EasyNetQ consuming from the queue and close the consumer's channel. It is the equivalent to calling subscriptionResult.ConsumerCancellation.Dispose();

Note that disposing of the IBus or IAdvancedBus instance will also cancel all consumers and close the connection to RabbitMQ.