Enum ClientError 

#[non_exhaustive]
pub enum ClientError {
    InvalidState,
    PacketIdExhausted,
    QuotaExhausted,
    QoSNotSupported,
    InvalidQoS,
    PayloadTooLarge,
    RetainNotAvailable,
    WildcardSubNotAvailable,
    SubIdNotAvailable,
    SharedSubNotAvailable,
}

Errors from the client state machine.

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.

InvalidState

Operation not valid in the current connection state.

PacketIdExhausted

No more packet identifiers available (all 65 535 in use).

QuotaExhausted

Send quota exhausted (Receive Maximum reached).

QoSNotSupported

QoS level exceeds the server’s Maximum QoS capability.

InvalidQoS

QoS 0 was passed to a store path that only tracks QoS 1 or 2 publishes (the outbox). A QoS 0 publish is fire-and-forget and must be sent directly rather than stored.

PayloadTooLarge

The publish payload is larger than can be encoded in a single MQTT packet (the Remaining Length VBI maximum, ~256 MiB).

RetainNotAvailable

Server declared Retain Available = false.

WildcardSubNotAvailable

Server declared Wildcard Subscription Available = false.

SubIdNotAvailable

Server declared Subscription Identifiers Available = false.

SharedSubNotAvailable

Server declared Shared Subscription Available = false.

Trait Implementations

impl Clone for ClientError

fn clone(&self) -> ClientError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ClientError

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

Formats the value using the given formatter.

impl Display for ClientError

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

Formats the value using the given formatter.

impl Error for ClientError

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 PartialEq for ClientError

fn eq(&self, other: &ClientError) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ClientError

impl Eq for ClientError

impl StructuralPartialEq for ClientError