Enum CallError 

pub enum CallError {
    NotSent(Box<dyn Error + Send + Sync>),
    OutcomeUnknown(Box<dyn Error + Send + Sync>),
    Module(ErrorBody),
    SubscriptionBackpressure(Box<dyn Error + Send + Sync>),
    StaleRouteHandle(RouteHandle),
}

Managed call or subscription failure.

Variants

NotSent(Box<dyn Error + Send + Sync>)

The request body was not accepted by the writer path, or route.open failed before data send.

OutcomeUnknown(Box<dyn Error + Send + Sync>)

The request body was accepted by the writer path, but no terminal response was observed.

Module(ErrorBody)

The target module handler returned an Error frame. Application-level rejections are returned as ordinary successful response bytes and do not produce this variant.

SubscriptionBackpressure(Box<dyn Error + Send + Sync>)

A subscription event receiver stopped keeping up with its bounded channel.

The reader task must never await a slow consumer while it is dispatching frames for the whole connection, so a full event channel terminates only that subscription.

StaleRouteHandle(RouteHandle)

The handle belongs to an earlier connection and no frame was emitted.

Trait Implementations

impl Debug for CallError

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

Formats the value using the given formatter.

impl Display for CallError

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

Formats the value using the given formatter.

impl Error for CallError

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<FrameBuildError> for CallError

fn from(err: FrameBuildError) -> Self

Converts to this type from the input type.