Enum ExtensionHandlerRegistrationError 

pub enum ExtensionHandlerRegistrationError {
    Frozen,
    UnregisteredExtension(String),
    EmptyMethodName,
    MethodNameTooLong(String),
    MethodNotOwned(ExtensionHandlerKey),
    MethodNotClientToServer(ExtensionHandlerKey),
    DuplicateHandler(ExtensionHandlerKey),
    DuplicateServerMetadata(ExtensionId),
    Registry(ExtensionRegistryError),
}

Failure while registering a typed extension handler.

Variants

Frozen

Handler mutation was attempted after the registry was frozen.

UnregisteredExtension(String)

The handler’s capability is absent from the protocol descriptor registry.

EmptyMethodName

The handler method is empty and cannot name an RPC request.

MethodNameTooLong(String)

The handler method exceeds the protocol’s bounded member-name limit.

MethodNotOwned(ExtensionHandlerKey)

The extension descriptor does not own the requested method.

MethodNotClientToServer(ExtensionHandlerKey)

The extension descriptor owns the method only in the server-to-client direction.

DuplicateHandler(ExtensionHandlerKey)

A handler is already registered for this exact extension request location.

DuplicateServerMetadata(ExtensionId)

Server discovery metadata is already registered for this extension.

Registry(ExtensionRegistryError)

The protocol registry rejected official MCP Apps descriptor installation.

Trait Implementations

impl Clone for ExtensionHandlerRegistrationError

fn clone(&self) -> ExtensionHandlerRegistrationError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ExtensionHandlerRegistrationError

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

Formats the value using the given formatter.

impl Display for ExtensionHandlerRegistrationError

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

Formats the value using the given formatter.

impl Eq for ExtensionHandlerRegistrationError

impl Error for ExtensionHandlerRegistrationError

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 PartialEq for ExtensionHandlerRegistrationError

fn eq(&self, other: &ExtensionHandlerRegistrationError) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ExtensionHandlerRegistrationError