tree 7a9315f7755add7daed3e253e0224a51c8e7a60f
parent 13e508decc141e3b4bbb96f1a3dba4f82d4e4c7e
author martinduke <martinduke@google.com> 1741991203 -0700
committer Copybara-Service <copybara-worker@google.com> 1741991268 -0700

Make response to incoming MoQT SUBSCRIBE asynchronous. Other verbs to come.

MoqtPublisher::GetTrack() can return with non-OK status, in which case MoqtSession can immediately reply with SUBSCRIBE_ERROR. Otherwise, MoqtSession will get an MoqtTrackPublisher (which might be provisional) and registers an MoqtObjectListener with it.

MoqtTrackPublisher will later call SubscribeAccepted() or SubscribeRejected() based on the result of the upstream SUBSCRIBE. The current queues have no upstream capability and immediately call SubscribeAccepted().

Since all downstream SUBSCRIBE tests in MoqtSessionTest needed revising anyway, created some helper functions to reduce toil and increase readibility.

PiperOrigin-RevId: 737004315