Struct JsonRpcError

pub struct JsonRpcError {
    pub code: i32,
    pub message: String,
    pub data: Option<Value>,
}

JSON-RPC 2.0 error object.

Represents an error that occurred during request processing. Includes standard error codes and optional additional data.

Fields

code: i32

Numeric error code

message: String

Human-readable error message

data: Option<Value>

Additional error data (optional)

Implementations

impl JsonRpcError

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

Create a new JSON-RPC error.

Examples

use mcp_probe_core::messages::core::JsonRpcError;
use serde_json::json;

let error = JsonRpcError::new(-32000, "Custom error", Some(json!({"details": "More info"})));

pub fn parse_error() -> Self

Create a “Parse error” (-32700).

Used when the JSON cannot be parsed.

pub fn invalid_request(details: impl Into<String>) -> Self

Create an “Invalid Request” error (-32600).

Used when the request is not a valid JSON-RPC request.

pub fn method_not_found(method: impl Into<String>) -> Self

Create a “Method not found” error (-32601).

Used when the requested method doesn’t exist.

pub fn invalid_params(details: impl Into<String>) -> Self

Create an “Invalid params” error (-32602).

Used when method parameters are invalid.

pub fn internal_error(details: impl Into<String>) -> Self

Create an “Internal error” (-32603).

Used for server-side internal errors.

pub fn application_error( code: i32, message: impl Into<String>, details: impl Into<String>, ) -> Self

Create a custom application error.

Custom error codes should be in the range -32000 to -32099.

Examples

use mcp_probe_core::messages::core::JsonRpcError;

let error = JsonRpcError::application_error(
    -32000,
    "Tool execution failed",
    "Tool 'calculator' returned non-zero exit code",
);

pub fn is_standard_error(&self) -> bool

Check if this is a standard JSON-RPC error (vs application-specific).

pub fn is_application_error(&self) -> bool

Check if this is an application-specific error.

Trait Implementations

impl Clone for JsonRpcError

fn clone(&self) -> JsonRpcError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JsonRpcError

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for JsonRpcError

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for JsonRpcError

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

Formats the value using the given formatter.

impl Error for JsonRpcError

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 JsonRpcError

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for JsonRpcError

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for JsonRpcError

impl StructuralPartialEq for JsonRpcError