Module rate_limit 

Rate-limiting subscription opens on the session bindings (docs/design/subscriptions-websocket.md §6.7): the seam WebSocket and WebTransport call, implemented by cratestack-axum’s SubscriptionRateLimiter over OpExecutor::admit_rate_limit. One token per subscription Request; the session itself is not charged.

Structs

SessionCharger

One session’s standing answer to “who pays”: built once per session and cloned into every subscription task. With no limiter it admits everything.

SubscriptionCharge

What a binding knows about one subscription open.

Enums

SubscriptionRefusal

Why an open was refused before Ready.

Traits

SubscriptionRateLimit

Charges one subscription open. Debug so binding configs keep deriving it.