Enum RequestError 

pub enum RequestError<T> {
    Cancelled(Canceled),
    SendError(SendError<T>),
    RecvError,
    DowncastError,
    DeserializeError(Error),
    Timeout,
}

Errors that can occur during request-response messaging.

This encompasses all possible failure modes when using ask() patterns:

• Network/channel failures
• Timeouts
• Actor unavailability
• Type mismatches

Variants

Cancelled(Canceled)

The receiving actor dropped the response channel

SendError(SendError<T>)

Failed to send the message to the actor

RecvError

The actor’s response channel was closed

DowncastError

Failed to downcast the response to the expected type

DeserializeError(Error)

Failed to deserialize the response (remote actors)

Timeout

The request timed out waiting for a response

Trait Implementations

impl<T: Debug> Debug for RequestError<T>

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

Formats the value using the given formatter.

impl<T> Display for RequestError<T>

where SendError<T>: Display,

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

Formats the value using the given formatter.

impl<T> Error for RequestError<T>

where SendError<T>: Error, Self: Debug + Display,

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<T> From<Canceled> for RequestError<T>

fn from(source: Canceled) -> Self

Converts to this type from the input type.

impl<T> From<Error> for RequestError<T>

fn from(source: Error) -> Self

Converts to this type from the input type.

impl<T> From<SendError<T>> for RequestError<T>

fn from(source: SendError<T>) -> Self

Converts to this type from the input type.