Enum Error 

pub enum Error {
    Config(String),
    Crypto(String),
    Transport(String),
    Protocol(String),
    Storage(String),
    Geoip(String),
    Io(Error),
}

Class-tagged error type for the core crate.

Higher layers convert their own error types into one of these classes (typically Crypto, Protocol, or Transport) so the surface presented to applications stays compact.

Variants

Config(String)

Configuration could not be loaded, validated, or applied.

Crypto(String)

A cryptographic primitive or handshake failed.

Transport(String)

A transport-layer failure (WireGuard/UDP, TCP).

Protocol(String)

A protocol-layer violation or unexpected message.

Storage(String)

Persistent storage failed (read, write, schema, etc.).

Geoip(String)

GeoIP DB open / parse / lookup failed (R-REGION.2 / D-5).

Surfaces failures from the operator-supplied GeoLite2-Country .mmdb file — both file-open / I/O errors and structural (InvalidDatabase / Decoding) errors fold into the same String form so downstream callers can match on the variant without depending on the upstream maxminddb crate. Per D-5, the cross-check is warn-only at MVP — callers convert this error class into an audit-log entry rather than refusing admission.

Io(Error)

An underlying std::io::Error propagated unchanged.

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<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.