Stop the transport: signal the background stream readers
(server->client, legacy GET) to stop between reads and force-close their
held sockets so any blocked conn.read unblocks immediately, terminating
the spawned tasks. A subscriptions/listen stream is owned by its
SubscriptionStream handle and torn down through cancel().
Stop the transport: signal the background stream readers (server->client, legacy GET) to stop between reads and force-close their held sockets so any blocked conn.read unblocks immediately, terminating the spawned tasks. A subscriptions/listen stream is owned by its SubscriptionStream handle and torn down through cancel().