Struct SseFrame 

#[non_exhaustive]
pub struct SseFrame {
    pub event: SseEvent,
    pub id: Option<String>,
}

A parsed SSE frame: the event and the id: line value (if any).

id field semantics

RFC 8895 §9.2 distinguishes three id states:

• A frame with no id: field → last event ID is unchanged.
• A frame with a bare id: field (no value) → last event ID is reset.
• A frame with id: <value> → last event ID is updated to <value>.

This implementation conflates the first two cases: both produce id: None. Callers implementing reconnect with Last-Event-ID should treat None as “no change” and retain the previously-seen ID. The “reset” semantic is not representable without a tri-state type; this simplification is intentional for JMAP, where bare id: reset frames are rare in practice.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

event: SseEvent

The parsed event payload from this SSE block.

id: Option<String>

The value of the id: line if present (RFC 8895 §9.2); None when the id: field is absent or bare (see the type-level docs for the rationale behind conflating those two states).

Trait Implementations

impl Clone for SseFrame

fn clone(&self) -> SseFrame

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SseFrame

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

Formats the value using the given formatter.

impl Eq for SseFrame

impl PartialEq for SseFrame

fn eq(&self, other: &SseFrame) -> 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 StructuralPartialEq for SseFrame