Enum McpClientError 

pub enum McpClientError {
    Transport(TransportError),
    Protocol(ProtocolError),
    Session(SessionError),
    Auth(String),
    Config(String),
    Connection(Error),
    Json(Error),
    Timeout,
    ServerError {
        code: i32,
        message: String,
        data: Option<Value>,
    },
    Generic {
        message: String,
    },
}

Comprehensive error type for MCP client operations

Variants

Transport(TransportError)

Transport-level errors

Protocol(ProtocolError)

Protocol-level errors

Session(SessionError)

Session management errors

Auth(String)

Authentication/authorization errors

Config(String)

Configuration errors

Connection(Error)

Network/connection errors

Json(Error)

JSON parsing errors

Timeout

Timeout errors

ServerError

Server returned an error

Fields

code: i32

message: String

data: Option<Value>

Generic

Generic error with context

Fields

message: String

Implementations

impl McpClientError

pub fn generic(message: impl Into<String>) -> Self

Create a generic error with a message

pub fn config(message: impl Into<String>) -> Self

Create a configuration error

pub fn auth(message: impl Into<String>) -> Self

Create an authentication error

pub fn server_error( code: i32, message: impl Into<String>, data: Option<Value>, ) -> Self

Create a server error from JSON-RPC error response

pub fn is_retryable(&self) -> bool

Check if the error is retryable

pub fn is_protocol_error(&self) -> bool

Check if the error is a protocol-level issue

pub fn is_session_error(&self) -> bool

Check if the error is a session-level issue

pub fn error_code(&self) -> Option<i32>

Get the error code if this is a server error

Trait Implementations

impl Debug for McpClientError

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

Formats the value using the given formatter.

impl Display for McpClientError

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

Formats the value using the given formatter.

impl Error for McpClientError

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 McpClientError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for McpClientError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<ProtocolError> for McpClientError

fn from(source: ProtocolError) -> Self

Converts to this type from the input type.

impl From<SessionError> for McpClientError

fn from(source: SessionError) -> Self

Converts to this type from the input type.

impl From<TransportError> for McpClientError

fn from(source: TransportError) -> Self

Converts to this type from the input type.