Enum CdpError 

pub enum CdpError {
    ProtocolError(String),
    JsonError(String),
    IoError(Error),
    ConnectionClosed,
    Timeout(String),
    TransportError(String),
    HandshakeError(String),
}

通信阶段错误(Transport 使用,具体实现在 TASK-2)。

变体覆盖 Plan MD 与 REQ-BAO-API-002 要求的完整错误码集合:

• CdpError::ProtocolError: 协议层(JSON-RPC error / -32601 / 解析失败)
• CdpError::IoError: 底层 I/O 错误
• CdpError::ConnectionClosed: Transport 已关闭或对端断开
• CdpError::Timeout: 命令调用或 recv_event 超时(TimeoutError)
• CdpError::TransportError: Transport 实现内部错误(TransportError)
• CdpError::HandshakeError: WebSocket 握手失败

@trace REQ-BAO-API-002 [interface:Transport]

Variants

ProtocolError(String)

协议层错误(JSON-RPC error object / unknown method 等)。

JsonError(String)

序列化/反序列化失败。

IoError(Error)

I/O 错误。

ConnectionClosed

连接已关闭。

Timeout(String)

调用超时(TimeoutError)。

TransportError(String)

Transport 实现内部错误(TransportError)。携带上下文用于诊断。

HandshakeError(String)

WebSocket 握手失败。

Trait Implementations

impl Debug for CdpError

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

Formats the value using the given formatter.

impl Display for CdpError

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

Formats the value using the given formatter.

impl Error for CdpError

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<ConnectError> for CdpError

fn from(err: ConnectError) -> CdpError

Converts to this type from the input type.

impl From<Error> for CdpError

fn from(err: Error) -> CdpError

Converts to this type from the input type.

impl From<Error> for CdpError

fn from(err: Error) -> CdpError

Converts to this type from the input type.