Enum StateError 

#[non_exhaustive]
pub enum StateError {
    StreamAlreadyActive {
        already_active: StreamId,
        requested: StreamId,
    },
    VoiceSeqOutOfRange {
        got: u8,
    },
    UnknownStreamId {
        stream_id: StreamId,
    },
    WrongState {
        operation: &'static str,
        state: ClientStateKind,
        protocol: ProtocolKind,
    },
}

Runtime state-machine errors that the typestate cannot prevent.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

StreamAlreadyActive

send_header for stream X while stream Y is still streaming.

Fields

already_active: StreamId

The stream id currently in flight.

requested: StreamId

The stream id the caller tried to start.

VoiceSeqOutOfRange

send_voice with seq > 20 (D-STAR seq is mod 21).

Fields

got: u8

The rejected seq value.

UnknownStreamId

Receive callback fired for a stream id with no known session state.

Fields

stream_id: StreamId

The stream id with no matching session.

WrongState

A method was called on a SessionCore while it was in the wrong ClientStateKind — e.g. enqueue_connect outside of Configured/Authenticated, or attach_host_list on a non-DPlus session.

The typestate wrapper (crate::session::client::Session) prevents this at compile time; the variant exists so direct SessionCore users (tests + the protocol-erased fallback) get a useful runtime error instead of a panic.

Fields

operation: &'static str

Which operation was attempted.

state: ClientStateKind

The current runtime state.

protocol: ProtocolKind

The runtime protocol discriminator.

Trait Implementations

impl Clone for StateError

fn clone(&self) -> StateError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StateError

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

Formats the value using the given formatter.

impl Display for StateError

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

Formats the value using the given formatter.

impl Error for StateError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<StateError> for Error

fn from(value: StateError) -> Self

Converts to this type from the input type.