Enum ClientEvent 

pub enum ClientEvent<const MAX_DATA: usize> {
    PositiveResponse {
        sid: u8,
        data: Vec<u8, MAX_DATA>,
    },
    NegativeResponse {
        sid: u8,
        nrc: u8,
    },
    ResponsePending {
        sid: u8,
    },
    Timeout {
        sid: u8,
    },
    PeriodicData {
        did: u8,
        data: Vec<u8, MAX_DATA>,
    },
    Unsolicited {
        data: Vec<u8, MAX_DATA>,
    },
}

An observable event emitted by the UDS client.

Events accumulate in the client’s event queue across ticks and are drained by the caller via drain_events(). Each event corresponds to a completed or failed request exchange.

The caller decides what to do with each event - the client never retries, escalates, or takes corrective action autonomously.

Variants

PositiveResponse

A positive response was received for the given service.

sid is the request SID (not the response SID). data contains the response payload bytes after the response SID.

Fields

sid: u8

data: Vec<u8, MAX_DATA>

NegativeResponse

A negative response was received.

sid is the request SID. nrc is the Negative Response Code byte.

Fields

sid: u8

nrc: u8

ResponsePending

A 0x78 Response Pending NRC was received.

The client has switched to the P2* extended timeout and is still waiting for the final response. This event is emitted once per 0x78 received - the caller can observe how many were received before the final response.

Fields

sid: u8

Timeout

No response was received within the P2 or P2* timeout.

The pending request has been discarded. The caller must decide whether to retry.

Fields

sid: u8

PeriodicData

A periodic data response arrived from the server.

[periodic_data_identifier (1 byte), data_record (n bytes)]

No SID prefix is present - did is the first byte of the frame, which is the low byte of the periodic DID identifier. data contains the data record bytes that followed.

Only emitted for DID low bytes registered via subscribe_periodic

Fields

did: u8

Low byte of the periodic DID identifier.

data: Vec<u8, MAX_DATA>

Data record bytes

Unsolicited

A response arrived with no matching pending request.

This can occur under fault injection (reordered or delayed responses arriving after a timeout) or if the server sends an unsolicited response.

Fields

data: Vec<u8, MAX_DATA>

Trait Implementations

impl<const MAX_DATA: usize> Clone for ClientEvent<MAX_DATA>

fn clone(&self) -> ClientEvent<MAX_DATA>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<const MAX_DATA: usize> Debug for ClientEvent<MAX_DATA>

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

Formats the value using the given formatter.

impl<const MAX_DATA: usize> Eq for ClientEvent<MAX_DATA>

impl<const MAX_DATA: usize> PartialEq for ClientEvent<MAX_DATA>

fn eq(&self, other: &ClientEvent<MAX_DATA>) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl<const MAX_DATA: usize> StructuralPartialEq for ClientEvent<MAX_DATA>