Enum PollEvent 

pub enum PollEvent {
    Ready(Option<RealtimeEvent>),
    Pending,
}

Result of a non-blocking RealtimeLlm::poll_event poll.

The S2S reader uses this to avoid holding the realtime session lock across a blocking next_event().await — which would starve send_audio (caller audio in) for the entire gap between bot turns and deadlock the call. The reader instead polls (brief lock), and on PollEvent::Pending awaits RealtimeLlm::event_notify with no lock held, so send_audio runs.

Variants

Ready(Option<RealtimeEvent>)

An event (or None = session closed) is ready now.

Pending

No event is ready; await event_notify() then poll again.