Enum RequestError 

#[non_exhaustive]
pub enum RequestError {
    Unavailable(ConnectError),
    Peer(Rejected),
    Credentials(Error),
    ProcessMismatch {
        peer: ProcessId,
        reported: u32,
    },
    Late,
    Protocol(Error),
}

Why a control request did not produce a trusted reply.

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.

Unavailable(ConnectError)

Nothing accepted the connection in time.

Peer(Rejected)

The peer runs as another user or is not the expected process.

Credentials(Error)

The OS could not read the peer credentials.

ProcessMismatch

The reply names a different process than the one on the connection.

Fields

peer: ProcessId

The PID the kernel reports for the connection.

reported: u32

The PID the reply claims.

Late

The deadline passed before a reply arrived.

Protocol(Error)

Negotiation, framing or the reply itself failed. A server that refused the connection says why through wire::Refused::of.

Implementations

impl RequestError

pub fn is_transient(&self) -> bool

Whether retrying the same endpoint can succeed: nothing was serving it yet. Every other failure needs rediscovery or a different decision.

Trait Implementations

impl Debug for RequestError

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

Formats the value using the given formatter.

impl Display for RequestError

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

Formats the value using the given formatter.

impl Error for RequestError

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.