Enum ExtensionHandlerInvocationError 

pub enum ExtensionHandlerInvocationError {
    RegistryNotFrozen,
    Protocol(ExtensionDispatchError),
    HandlerNotFound(ExtensionHandlerKey),
    RequestEnvelopeRequired(ExtensionHandlerKey),
    Handler(McpError),
}

Failure while admitting or invoking a typed extension handler.

Variants

RegistryNotFrozen

Invocation is unavailable until the capability and handler registries are frozen together.

Protocol(ExtensionDispatchError)

The current exchange did not admit this capability and client-to-server request method.

HandlerNotFound(ExtensionHandlerKey)

No handler was registered for an otherwise admitted extension request method.

RequestEnvelopeRequired(ExtensionHandlerKey)

A descriptor-owned extension request was sent as an id-less notification.

Handler(McpError)

The admitted typed handler returned an MCP error.

Trait Implementations

impl Debug for ExtensionHandlerInvocationError

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

Formats the value using the given formatter.

impl Display for ExtensionHandlerInvocationError

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

Formats the value using the given formatter.

impl Error for ExtensionHandlerInvocationError

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.