Enum DropReason 

pub enum DropReason {
    Stale {
        replacement_digest: Option<String>,
    },
    Gone,
    Unknown,
    NoDigest,
    VerifyUnsupported,
    UnknownProvider,
    VerifyFailed(String),
}

Why a held frame was dropped by Host::verify_frames (docs/context-reuse.md §4).

The first three mirror the provider’s Verdicts; the rest are host-side reasons a frame could not be revalidated at all. Either way the frame leaves the composed context — the difference matters only for deciding whether to re-query it.

Variants

Stale

The provider answered stale: the frame exists but its content changed. Carries the provider’s current digest when it offered one.

Fields

replacement_digest: Option<String>

Gone

The provider answered gone — the frame no longer exists.

Unknown

The provider answered unknown, or returned no verdict for the frame at all. Silence is not validity.

NoDigest

The frame carries no content_digest, so it cannot be revalidated (§1, requirement D4).

VerifyUnsupported

The provider does not advertise the verify capability, so the host falls back to re-querying its frames (§4, requirement V3).

UnknownProvider

No provider with this frame’s provider_id is registered with the host.

VerifyFailed(String)

The verify request itself failed — a transport error or a timeout.

Implementations

impl DropReason

pub fn warrants_requery(&self) -> bool

Whether re-querying the provider could recover usable content for this frame. False only for Gone — every other reason means the host simply doesn’t have a trustworthy copy and should ask again.

Trait Implementations

impl Clone for DropReason

fn clone(&self) -> DropReason

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DropReason

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

Formats the value using the given formatter.

impl Eq for DropReason

impl PartialEq for DropReason

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DropReason