Struct TargetHandshake 

pub struct TargetHandshake { /* private fields */ }

Target-side handshake coordinator.

Idempotent Handshake Retransmission Contract

In lossy UART links, the target’s initial HandshakeResponse may be dropped or corrupted in flight. When this occurs, the host’s timeout will cause it to retransmit the initial NegotiateReq with the identical session_id.

Target implementations (e.g. receiver_task) MUST treat repeated NegotiateReq frames with the active session_id as idempotent retransmissions: the target must re-emit the cached NegotiateResp frame rather than rejecting the frame as unexpected or resetting the transport state. If a NegotiateReq arrives with a new session ID, the target must reset and negotiate the new session.

Implementations

impl TargetHandshake

pub fn new(supported: Vec<ProtocolId>) -> Self

Creates a new target handshake handler with the list of supported protocols.

pub fn supported(&self) -> &[ProtocolId]

Returns the list of supported protocols.

pub fn handle_request( &self, payload: &[u8], ) -> Result<(Option<ProtocolId>, Vec<u8>), HandshakeError>

Evaluates an incoming host request payload and generates the serialized response. Returns (selected_protocol, response_payload).

Errors

Returns HandshakeError::MalformedPayload if payload cannot be decoded into a valid [HandshakeRequest].

Trait Implementations

impl Clone for TargetHandshake

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TargetHandshake

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.