Trait SupplyConstraint 

pub trait SupplyConstraint {
    // Required methods
    fn max_admissible_inflight(&self) -> usize;
    fn backoff_hint(&self) -> Option<Backoff>;
}

The SURB-supply ceiling. Down-only: it may cap or shrink the window, never open it.

This is the anti-grief governor. A healthy buffer returns backoff_hint None — it does not mean “go faster”; only DeliverySignal can authorize that.

Required Methods

fn max_admissible_inflight(&self) -> usize

Maximum in-flight bytes the current SURB stock can support (buffer_level × bytes_per_reply_packet). The window is capped to this.

fn backoff_hint(&self) -> Option<Backoff>

Backoff request derived from SURB distress signals. None when the buffer is healthy — never a signal to open the window.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors