Enum NotificationConfigError 

pub enum NotificationConfigError {
    Refused(FilterDenial),
    TransientFailure {
        reason: String,
    },
}

Failure modes for a delivery attempt, in priority order.

Refused (the filter denied the URL) is distinct from TransientFailure (the filter accepted the URL but the network refused) so the handler can choose to surface one and silently retry the other. The split is what makes the difference between “the client is malicious” and “the network is bad” a typed answer.

Variants

Refused(FilterDenial)

The URL was rejected at config time. Surfacing this lets the handler answer the client with the typed refusal; retrying will not help.

TransientFailure

The URL was accepted but the delivery step failed (network, timeout, non-2xx, or a redirect loop). The handler decides whether to retry; the port reports the failure as a structured reason.

Fields

reason: String

A human-readable reason for the failure.

Trait Implementations

impl Debug for NotificationConfigError

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

Formats the value using the given formatter.

impl Display for NotificationConfigError

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

Formats the value using the given formatter.

impl Error for NotificationConfigError

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<FilterDenial> for NotificationConfigError

fn from(source: FilterDenial) -> Self

Converts to this type from the input type.