Struct LinkController 

pub struct LinkController { /* private fields */ }

Drives link state transitions based on ep0 lifecycle events, heartbeat pings, endpoint I/O errors, and periodic liveness ticks.

This controller is intentionally small and side-effect-free: it only tracks state and emits commands. The caller is responsible for actually opening/closing endpoints and replaying or parking I/O.

Implementations

impl LinkController

pub fn new(liveness_timeout: Duration) -> Self

Construct a new controller with a configurable liveness timeout.

pub fn state(&self) -> LinkState

Current link state snapshot.

pub fn last_offline_reason(&self) -> Option<LinkOfflineReason>

Most recent reason the link moved Offline.

pub fn on_ep0_event(&mut self, event: Event<'_>)

Notify the controller of an ep0 lifecycle event.

pub fn on_status_ping(&mut self)

Notify the controller that a SMOO_STATUS (or equivalent heartbeat) was seen.

pub fn on_io_error(&mut self, _err: &Error)

Notify the controller that an endpoint I/O error occurred.

pub fn tick(&mut self, now: Instant)

Advance the controller based on the current time to detect liveness timeouts.

pub fn take_command(&mut self) -> Option<LinkCommand>

Drain the next pending command, if any.