Enum ShortCircuit 

#[non_exhaustive]
pub enum ShortCircuit {
    Response(Response),
    Close(CloseReason),
}

Short-circuit branch for Decision::Short. #[non_exhaustive] keeps the engine’s switch resilient to new short-circuit shapes (synthetic 1xx interim responses, in-flow rewrites) being added without forcing every consumer to recompile.

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.

Response(Response)

Close(CloseReason)