Enum McpError 

pub enum McpError {
    Transport {
        source: TransportError,
    },
    Protocol {
        source: ProtocolError,
    },
    Timeout {
        duration: Duration,
    },
    Connection {
        message: String,
    },
    Serialization {
        message: String,
    },
    Validation {
        message: String,
    },
    Internal {
        message: String,
    },
}

Enhanced MCP error with structured types

Variants

Transport

Fields

source: TransportError

Protocol

Fields

source: ProtocolError

Timeout

Fields

duration: Duration

Connection

Fields

message: String

Serialization

Fields

message: String

Validation

Fields

message: String

Internal

Fields

message: String

Implementations

impl McpError

Implementations for backward compatibility and convenience

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

Create a transport error with message

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

Create a protocol error with message

pub fn timeout(_message: impl Into<String>) -> Self

Create a timeout error

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

Create a connection error

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

Create a serialization error

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

Create a validation error

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

Create an internal error

pub fn is_recoverable(&self) -> bool

Check if error is recoverable (for retry logic)

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

Convert from std::io::Error

fn from(err: Error) -> Self

Converts to this type from the input type.

impl From<Error> for McpError

Convert from serde_json::Error

fn from(err: Error) -> Self

Converts to this type from the input type.

impl From<ProtocolError> for McpError

fn from(source: ProtocolError) -> Self

Converts to this type from the input type.

impl From<TransportError> for McpError

fn from(source: TransportError) -> Self

Converts to this type from the input type.