Enum AuthNError 

#[non_exhaustive]
pub enum AuthNError {
    InvalidToken,
    Unavailable,
    Other(String),
}

Neutral authentication error returned by a BearerAuthenticator.

Intentionally coarse-grained and transport-agnostic: it never carries the token or any provider-specific detail so it is safe to surface at a trust boundary. Concrete adapters map their own error types into these variants.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

InvalidToken

The token was syntactically present but failed validation (invalid signature, expired, malformed claims, etc.).

Unavailable

The authentication backend could not be reached or returned a transient failure. Callers may choose to retry or surface a 503.

Other(String)

Any other authentication failure. The message must not contain the token or other sensitive material.

Trait Implementations

impl Debug for AuthNError

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

Formats the value using the given formatter.

impl Display for AuthNError

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

Formats the value using the given formatter.

impl Error for AuthNError

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.