JetStream: How to make Push Subscription with Durable consumer? (i get "No interest")

Question

I try to make Durable and Delivery consumer, but i get "No Interest" as result.

1. It is "Active" When i create PushSubscribeOptions like this:

   PushSubscribeOptions pso = PushSubscribeOptions.Builder()

    .WithDurable(options?.DurableName).WithStream(options?.StreamName).Build(); IJetStreamPushAsyncSubscription sub = _js.PushSubscribeAsync(options?.Subject, someHandler, true, pso);

2. It is "No interest" when i use this code:

   PushSubscribeOptions pso = PushSubscribeOptions.Builder()

    .WithDurable(options?.DurableName).WithStream(options?.StreamName).WithDeliverGroup(options?.DeliveryGroup).Build(); IJetStreamPushAsyncSubscription sub = _js.PushSubscribeAsync(options?.Subject, someHandler, true, pso);

So, i am confuse.

How to make Push subscription with Delivery+Durable options?

Answer 1

Start the subscriber before you create the push consumer. At least in go, the no-interest is only an optimization (why transmit on a topic no one is subscribing on), and there it will start to push as soon as the is a subscriber ON THE PUSH TOPIC