Struct Demand 

pub struct Demand { /* private fields */ }

A cloneable, watch-only handle to a track’s subscriber demand.

Obtained from Producer::demand. A publisher uses it to react to whether anyone is subscribed (on-demand capture / encoding) without being able to publish frames or close the track. It’s a weak handle, so it neither keeps the track alive nor pins its cached groups; once the owning Producer goes away, used / unused report the track’s closure.

Implementations

impl Demand

pub fn name(&self) -> &str

The track name this handle is bound to.

pub async fn used(&self) -> Result<()>

Block until there is at least one active consumer.

pub async fn unused(&self) -> Result<()>

Block until there are no active consumers.

pub async fn closed(&self) -> Error

Block until the track is closed or aborted, returning the cause.

Trait Implementations

impl Clone for Demand

fn clone(&self) -> Demand

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.