Enum Error 

pub enum Error {
    ConnectionFailed,
    ConnectionClosed,
    Timeout,
    NackReceived,
    VerificationFailed,
    IOError(Error),
    Other(String),
}

Failure modes that can occur while running an crate::app::App or expressing an Interest through an crate::app::AppHandler.

Variants

ConnectionFailed

Connecting to the local NFD forwarder failed, e.g. the Unix socket doesn’t exist or NFD isn’t running.

ConnectionClosed

The connection to NFD was closed, either by NFD or because a background task exited. The app cannot continue after this.

Timeout

An expressed Interest didn’t receive a Data or NACK before its InterestLifetime elapsed.

NackReceived

The producer (or forwarder) NACKed the Interest, e.g. because it failed the producer’s verifier or no route matched.

VerificationFailed

A Data packet was received but rejected by the caller-supplied crate::verifier::DataVerifier.

IOError(Error)

Reading from or writing to the NFD connection failed at the OS level.

Other(String)

A catch-all for errors that don’t fit the other variants.

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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<Elapsed> for Error

fn from(_: Elapsed) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(value: Error) -> Self

Converts to this type from the input type.