Enum Expiry 

#[non_exhaustive]
pub enum Expiry {
    Deliver,
    ResetStream {
        code: u64,
    },
}

What happens when a queued object outlives max_hold.

#[non_exhaustive], with Deliver as the Default — which is exactly today’s behaviour, so nothing changes for a session that does not ask for shaping.

There is deliberately no Drop variant. An expiry is decided at release time, long after the framer’s positional cursor has advanced past the object, so the elide fix-up cannot be armed; on drafts 14-19 that corrupts every successor’s absolute ID. A variant that is constructible and always refused is worse than an absent one.

The cost of the pick, stated so nobody rediscovers it: the relay gave up on stale media is expressible only at stream granularity, and objects_expired is therefore zero by default, with a producer only on the Expiry::ResetStream arm.

Written as "deliver" or {"reset-stream": {"code": 1}}.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Deliver

Clamp the deadline and deliver anyway. Today’s behaviour, and the reason a starved class still delivers at max_hold. Default.

ResetStream

Give up on the stream: drain what is due, then reset.

Fields

code: u64

The application error code to reset with.

Trait Implementations

impl Clone for Expiry

fn clone(&self) -> Expiry

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Expiry

impl Debug for Expiry

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Expiry

fn default() -> Expiry

Returns the “default value” for a type.

impl Eq for Expiry

impl PartialEq for Expiry

fn eq(&self, other: &Expiry) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Expiry