Enum RegardingRef 

pub enum RegardingRef {
    Handle(MessageHandle),
    Wire {
        message_id: u8,
        direction: Direction,
        sender_hint: Option<NodeHint>,
        epoch: Option<u16>,
    },
}

What a reply or emote is about.

Unlike ComposeRef, which only ever names the local stream, a regarding target is usually a message someone else sent, and usually one this process did not witness arrive: reacting to a message read yesterday is the ordinary case, not the exotic one. The wire form therefore carries the direction and — for channel groups, where the ID alone is meaningless — the target sender’s hint.

Variants

Handle(MessageHandle)

A message this engine instance inserted or composed.

Wire

A persisted message addressed by the coordinates recorded with it.

epoch is checked against the stream when one is live, so a reference that predates a Sequence Reset is refused rather than mis-targeted. For an inbound target with no live stream the reference is sent best-effort: retention is the receiver’s business, and the receiving platform matches unresolved references against its own stored rows.

Fields

message_id: u8

direction: Direction

sender_hint: Option<NodeHint>

The target sender’s hint. Required for inbound channel-group targets, whose wire IDs are only meaningful per member.

epoch: Option<u16>

Trait Implementations

impl Clone for RegardingRef

fn clone(&self) -> RegardingRef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RegardingRef

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

Formats the value using the given formatter.

impl PartialEq for RegardingRef

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for RegardingRef

impl Eq for RegardingRef

impl StructuralPartialEq for RegardingRef