Enum CallbackError 

#[non_exhaustive]
pub enum CallbackError {
    MissingState,
    MissingIssuer,
    IssuerMismatch {
        expected: String,
        got: String,
    },
    Timeout,
    LoopbackServer(String),
}

Typed callback validation errors (redirect handling).

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.

MissingState

The state parameter was absent from the authorization callback.

State is required to prevent CSRF attacks per RFC 6749 §10.12.

MissingIssuer

The iss (issuer) parameter was absent from the authorization callback.

RFC 9207 requires iss to be present so that clients can reject mix-up attacks from malicious authorization servers.

IssuerMismatch

The issuer in the callback did not match the expected authorization server.

Fields

expected: String

The issuer that was expected.

got: String

The issuer that was actually present in the callback.

Timeout

The authorization request timed out before a callback was received.

LoopbackServer(String)

The local loopback callback server could not start or accept callbacks.

Trait Implementations

impl Debug for CallbackError

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

Formats the value using the given formatter.

impl Diagnostic for CallbackError

fn code(&self) -> Option<Box<dyn Display + '_>>

Unique diagnostic code that can be used to look up more information about this Diagnostic. Ideally also globally unique, and documented in the toplevel crate’s documentation for easy searching. Rust path format (foo::bar::baz) is recommended, but more classic codes like E0123 or enums will work just fine.

fn severity(&self) -> Option<Severity>

Diagnostic severity. This may be used by ReportHandlers to change the display format of this diagnostic.

fn help<'a>(&'a self) -> Option<Box<dyn Display + 'a>>

Additional help text related to this Diagnostic. Do you have any advice for the poor soul who’s just run into this issue?

fn url<'a>(&'a self) -> Option<Box<dyn Display + 'a>>

URL to visit for a more detailed explanation/help about this Diagnostic.

fn source_code(&self) -> Option<&dyn SourceCode>

Source code to apply this Diagnostic’s Diagnostic::labels to.

fn labels(&self) -> Option<Box<dyn Iterator<Item = LabeledSpan> + '_>>

Labels to apply to this Diagnostic’s Diagnostic::source_code

fn related<'a>( &'a self, ) -> Option<Box<dyn Iterator<Item = &'a dyn Diagnostic> + 'a>>

Additional related Diagnostics.

fn diagnostic_source(&self) -> Option<&dyn Diagnostic>

The cause of the error.

impl Display for CallbackError

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

Formats the value using the given formatter.

impl Error for CallbackError

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<CallbackError> for OAuthError

fn from(source: CallbackError) -> Self

Converts to this type from the input type.