Enum OpcError 

#[non_exhaustive]
pub enum OpcError {
    Com {
        source: Error,
    },
    Connection(String),
    Server(String, u32),
    Conversion(String),
    InvalidState(String),
    NotImplemented(String),
    Internal(String),
}

Centralized error enum for the OPC DA client.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Com

Standard Windows COM/DCOM error.

This variant wraps a windows::core::Error and provides a friendly hint for common OPC-related HRESULT codes.

Fields

source: Error

Connection(String)

Connection-related errors (e.g., host unreachable, resolution failure).

Server(String, u32)

Server-specific errors reported via OPC status codes.

Conversion(String)

Errors during data type conversion or VARIANT processing.

InvalidState(String)

Operation attempted in an invalid state (e.g., group already exists).

NotImplemented(String)

Feature not implemented or supported by the target OPC server.

Internal(String)

Catch-all for unexpected internal failures.

Trait Implementations

impl Debug for OpcError

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

Formats the value using the given formatter.

impl Display for OpcError

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

Formats the value using the given formatter.

impl Error for OpcError

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 OpcError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for OpcError

fn from(err: Error) -> Self

Converts to this type from the input type.

impl From<JoinError> for OpcError

fn from(err: JoinError) -> Self

Converts to this type from the input type.

impl From<TryFromIntError> for OpcError

fn from(err: TryFromIntError) -> Self

Converts to this type from the input type.