Enum RecoverableError 

pub enum RecoverableError {
    NetworkError,
    ServerUnavailable,
    QuotaExceeded,
    PacketIdExhausted,
    FlowControlLimited,
    SessionTakenOver,
    ServerShuttingDown,
    MqoqFlowRecoverable,
}

A transient fault for which retrying the same operation after a delay can succeed on its own, with no state change or user intervention.

This is the retry/backoff machinery’s notion of “recoverable”, not a general judgement about whether the failure is the caller’s fault. An error is recoverable here only if the fix is “wait, then try again”: the operation’s preconditions still hold and something outside the caller’s control is expected to clear. Faults whose remedy is a state transition (re-establishing a connection), a different request (smaller payload), or human action (fixing credentials) are deliberately not recoverable, because a naive backoff loop on them would spin forever.

Variants

NetworkError

Transient network fault (timeout, reset, unreachable). Retry after backoff.

ServerUnavailable

Server temporarily cannot serve the request. Retry after backoff.

QuotaExceeded

Server-side quota hit. Retry after a longer backoff (see base_delay_multiplier).

PacketIdExhausted

No packet identifiers currently free; one frees as in-flight messages ack.

FlowControlLimited

Receive-maximum flow-control limit reached; capacity returns as acks arrive.

SessionTakenOver

Session was taken over by another client using the same client id.

ServerShuttingDown

Server is shutting down; reconnect will land on a fresh instance.

MqoqFlowRecoverable

Recoverable MQoQ flow condition (idle/cancelled/refused flow).

Implementations

impl RecoverableError

pub fn base_delay_multiplier(&self) -> u32

pub fn default_set() -> [Self; 6]

Trait Implementations

impl Clone for RecoverableError

fn clone(&self) -> RecoverableError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RecoverableError

impl Debug for RecoverableError

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

Formats the value using the given formatter.

impl Eq for RecoverableError

impl Hash for RecoverableError

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for RecoverableError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for RecoverableError