Enum TransportError 

pub enum TransportError {
    Io(Error),
    Frame(FrameError),
    Timeout,
    Disconnected,
    AccessDenied,
    TlsHandshake(String),
    AuthorizationDenied {
        role: Option<String>,
        function_code: FunctionCode,
    },
}

Errors that can occur during transport operations.

Variants

Io(Error)

Underlying I/O error.

Frame(FrameError)

Frame-level error (decode, encode, CRC, protocol ID).

Timeout

Operation timed out.

Disconnected

Connection was closed by the remote peer.

AccessDenied

Connection denied by access control.

TlsHandshake(String)

TLS handshake failure (used by modbus-tls, defined here for TransportError unification).

AuthorizationDenied

Authorization denied by server policy.

Fields

role: Option<String>

Client role from certificate (if any).

function_code: FunctionCode

The function code that was denied.

Trait Implementations

impl Debug for TransportError

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

Formats the value using the given formatter.

impl Display for TransportError

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

Formats the value using the given formatter.

impl Error for TransportError

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 TransportError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<FrameError> for TransportError

fn from(source: FrameError) -> Self

Converts to this type from the input type.