Enum McpError 

pub enum McpError {
    Io(Error),
    Serialize(Error),
    Transport(String),
    Timeout {
        operation: &'static str,
        duration: Duration,
    },
    Protocol(String),
    AuthRequired(Box<AuthRequest>),
    AuthResolution(String),
    Invocation(McpInvocationError),
    UnknownServer(String),
}

Errors produced by MCP transport, protocol, and lifecycle operations.

Variants

Io(Error)

An underlying I/O error.

Serialize(Error)

A JSON serialization or deserialization error.

Transport(String)

A transport-level error.

Timeout

A manager lifecycle operation exceeded its configured timeout.

Fields

operation: &'static str

Operation that timed out.

duration: Duration

Configured timeout duration.

Protocol(String)

An MCP protocol violation.

AuthRequired(Box<AuthRequest>)

The server requires authentication before the operation can proceed.

AuthResolution(String)

An error occurred while resolving or replaying authentication.

Invocation(McpInvocationError)

The MCP server returned a JSON-RPC error for the invoked method.

UnknownServer(String)

The referenced server ID is not registered in the McpServerManager.

Trait Implementations

impl Debug for McpError

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

Formats the value using the given formatter.

impl Display for McpError

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

Formats the value using the given formatter.

impl Error for McpError

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<Error> for McpError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for McpError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<McpError> for ErrorData

fn from(error: McpError) -> Self

Converts to this type from the input type.