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StreamAccept

dig_message::stream

Enum StreamAccept 

Source 
pub enum StreamAccept {
    Event(StreamEvent),
    Dropped {
        cause: MessageError,
    },
    Reset {
        frame: Box<DigMessageEnvelope>,
        cause: MessageError,
    },
}
Expand description

The outcome of StreamEndpoint::accept (SPEC §3, RESET-on-failed-verify gate item #1162).

The security purpose of “RESET-on-failed-verify” is to NEVER deliver corrupt data and NEVER let a bad frame poison a stream — dropping the frame fully satisfies that. Emitting a signed RESET is a separate, RESTRICTED action, because a RESET is itself a real non-replayable frame: broadcasting one in response to unauthenticated or duplicate input lets the untrusted relay (§5.4) weaponize it — a self-sustaining RESET reflection storm (inject-only), or tearing down a healthy stream by replaying one frame. So a RESET must NEVER beget a RESET. The three outcomes:

Variants§

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Event(StreamEvent)

A verified, in-order event.

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Dropped

The frame was rejected and SILENTLY DROPPED — nothing is transmitted. This covers every unauthenticated or non-actionable input: a failed open/verify (bad seal / bad signature / replay / expiry / unresolvable sender), a non-stream or unknown-kind frame, an inbound RESET, and any frame addressing an unknown stream. A live session, if any, is left UNTOUCHED (a garbage or replayed frame never tears down a healthy stream). cause records why.

Fields

§cause: MessageError

Why the frame was dropped.

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Reset

The state machine rejected an AUTHENTICATED frame on a KNOWN stream (an ordering/credit/half-close violation by the verified peer, or the concurrent-stream cap) — send this RESET and consider the stream aborted. This is the ONLY transmitting rejection, and it is safe: the frame was cryptographically authenticated, so it cannot be forged or replayed by the relay, and the peer receiving the RESET for its own live/opening stream tears it down without re-RESETting (no storm).

Fields

§frame: Box<DigMessageEnvelope>

The sealed RESET frame to transmit to the peer (boxed — it dwarfs the Event variant).

§cause: MessageError

Why the frame was rejected.

Trait Implementations§

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impl Debug for StreamAccept

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

Formats the value using the given formatter. Read more
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impl Eq for StreamAccept

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impl PartialEq for StreamAccept

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl StructuralPartialEq for StreamAccept

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