Struct FopMachine 

pub struct FopMachine<const WIN: usize, const BUF: usize> { /* private fields */ }

FOP-1 state machine.

Implements the sender side of COP-1 go-back-N ARQ. Completely synchronous — no I/O, no async.

Type Parameters

• WIN — Maximum sent queue depth (sliding window).
• BUF — Total FDU buffer size in bytes.

Implementations

impl<const WIN: usize, const BUF: usize> FopMachine<WIN, BUF>

pub fn new(config: FopConfig) -> Self

Create a new FOP-1 state machine in the Initial (S6) state.

pub fn state(&self) -> FopState

Current FOP-1 state.

pub fn vs(&self) -> u8

Current V(S).

pub fn get_fdu(&self, seq: u8) -> Option<&[u8]>

Get FDU payload for a given sequence number.

pub fn get_bd_fdu(&self) -> Option<&[u8]>

Get the pending BD FDU payload (if any).

pub fn sent_count(&self) -> usize

Number of frames in the sent queue.

pub fn handle(&mut self, event: FopEvent<'_>, actions: &mut FopActions)

Process an event and emit actions.