ConnectableObservable cannot connect once it was disposed about rxswift

[danielt1263]

This is as designed, but it will take a bit of explaining. The TL:DR is that you should use .multicast(ReplaySubject<Int>.create(bufferSize: 1)) for this use-case.

The replay(1) operator is a wrapper around the .multicast { ReplaySubject.create(bufferSize: 1) } operator. This operator creates a Subject using the closure and when it's subscribed to, it binds the subscriber(s) to the subject. When connect is called, it binds the subject to the source and all the subscribers start receiving events.

When the connection is disposed, it destroys the Subject and therefore looses all the subscriptions. In essence, it only replays events to subscribers that subscribe while the source is emitting.

If you want to hold on to the values for longer, you need to use the multicast(_:) that takes a Subject object rather than a closure that creates a Subject. When you do that, all connections will use the same Subject object which will exist as long as the connectable exists.

[tomcheung]

I see, thanks for detail explaination, i think it is clear enough and can close this issue