Enum TokenGrantError 

pub enum TokenGrantError {
    InvalidGrant(String),
    InvalidClient(String),
    InvalidScope(String),
    PkceVerificationFailed,
    UnsupportedGrantType,
    DpopMismatch,
    AuthorizationPending,
    SlowDown,
    ExpiredToken,
    AccessDenied,
    InvalidTarget(String),
    ServerError(String),
}

Domain-specific errors for OAuth token grant processing.

Variants

InvalidGrant(String)

Invalid grant (e.g., invalid authorization code or refresh token)

InvalidClient(String)

Invalid client (e.g., client ID mismatch or missing DPoP header)

InvalidScope(String)

RFC 6749 §6: a refresh-token grant requested a scope that is not a subset of the scope originally granted to the token being refreshed.

PkceVerificationFailed

PKCE verification failed

UnsupportedGrantType

Unsupported grant type

DpopMismatch

DPoP JKT mismatch

AuthorizationPending

RFC 8628: the authorization request is still pending (user has not yet approved or denied the device code).

SlowDown

RFC 8628: the client is polling faster than the permitted interval.

ExpiredToken

RFC 8628: the device code has expired.

AccessDenied

RFC 8628: the user denied the authorization request.

InvalidTarget(String)

RFC 8707: the requested resource does not match the grant.

ServerError(String)

Server error (database or other internal error)

Trait Implementations

impl Debug for TokenGrantError

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

Formats the value using the given formatter.

impl Display for TokenGrantError

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

Formats the value using the given formatter.

impl Error for TokenGrantError

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<DpopError> for TokenGrantError

fn from(err: DpopError) -> Self

Converts to this type from the input type.

impl From<TokenGrantError> for ControllerError

fn from(err: TokenGrantError) -> Self

Converts to this type from the input type.