Enum AuthorizeError 

pub enum AuthorizeError {
    Discovery {
        what: &'static str,
        reason: String,
    },
    ResourceMismatch {
        expected: String,
        found: String,
    },
    NoPkce,
    NoRegistration,
    Registration(String),
    CredentialsForAnotherIssuer {
        registered: String,
        named: String,
    },
    Begin(BeginError),
    Callback(CallbackError),
    Redeem(RedeemError),
    Environment(EnvironmentError),
    Metadata(MetadataError),
    AttemptsExhausted(u32),
}

Why a token could not be obtained.

Variants

Discovery

A document the flow needs could not be read.

Fields

what: &'static str

Which document.

reason: String

Why not.

ResourceMismatch

The resource metadata describes a different resource than the one asked.

Following it would send the user to authorize access to something other than the server they are using.

Fields

expected: String

This server’s canonical URI.

found: String

What the metadata claimed.

NoPkce

The authorization server does not offer PKCE with S256.

“MCP clients MUST verify PKCE support”: a server that does not list it, or does not list the method, is refused rather than assumed.

NoRegistration

No way to obtain a client id: nothing pre-registered, no metadata document the server supports, no registration endpoint.

Registration(String)

Dynamic client registration was refused or unreadable.

CredentialsForAnotherIssuer

Pre-registered credentials exist for a different authorization server.

Fields

registered: String

The issuer the credentials were registered with.

named: String

The issuer the resource metadata now names.

Begin(BeginError)

The authorization request could not be built.

Callback(CallbackError)

The callback was refused.

Redeem(RedeemError)

The code could not be redeemed.

Environment(EnvironmentError)

The environment could not do something the flow asked.

Metadata(MetadataError)

A metadata document was unusable.

AttemptsExhausted(u32)

The server kept refusing, and the client stopped asking.

Trait Implementations

impl Debug for AuthorizeError

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

Formats the value using the given formatter.

impl Display for AuthorizeError

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

Formats the value using the given formatter.

impl Error for AuthorizeError

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<BeginError> for AuthorizeError

fn from(source: BeginError) -> Self

Converts to this type from the input type.

impl From<CallbackError> for AuthorizeError

fn from(source: CallbackError) -> Self

Converts to this type from the input type.

impl From<EnvironmentError> for AuthorizeError

fn from(source: EnvironmentError) -> Self

Converts to this type from the input type.

impl From<MetadataError> for AuthorizeError

fn from(source: MetadataError) -> Self

Converts to this type from the input type.

impl From<RedeemError> for AuthorizeError

fn from(source: RedeemError) -> Self

Converts to this type from the input type.