Completes the subscription for a listener to start receiving pubsub messages
on the corresponding channel(s). Returns instantly if already subscribed.
If a connection error is thrown here, it stops the listener.
scope string args
Jan Krüger, Sönke Ludwig, Michael Eisendle, Etienne Cimon
© 2012-2016 RejectedSoftware e.K.
Subject to the terms of the MIT license, as written in the included LICENSE.txt file.