Enum Refused 

pub enum Refused {
    Congested {
        needed: usize,
        free: usize,
    },
    TooLarge {
        needed: usize,
        capacity: usize,
    },
    Closed,
}

Why a transition could not be admitted.

Variants

Congested

Not enough free slots right now. Nothing was queued, the committed state stays where it is, and the next attempt is planned against a fresher desired state. Ordinary backpressure, not a fault.

Fields

needed: usize

free: usize

TooLarge

Larger than the queue can ever hold. Retrying would never succeed, so this is a livelock rather than backpressure and the connection is torn down: reconnecting rebuilds the view from scratch.

Fields

needed: usize

capacity: usize

Closed

The connection’s writer has ended.

Trait Implementations

impl Clone for Refused

fn clone(&self) -> Refused

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Refused

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

Formats the value using the given formatter.

impl Display for Refused

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

Formats the value using the given formatter.

impl Error for Refused

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 Refused

fn eq(&self, other: &Refused) -> 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 Refused

impl Eq for Refused

impl StructuralPartialEq for Refused