Enum Error 

pub enum Error {
    InvalidDatabase(&'static str),
    InvalidMetadata(&'static str),
    InvalidNode(u64),
    InvalidOffset(usize),
    InvalidDataType(u8),
    InvalidIpVersion(u16),
    UnexpectedEof,
    EncodingError(String),
    DecodingError(String),
    NotFound,
    ResourceLimit(&'static str),
    Io(Error),
    SerdeJson(Error),
    AddrParse(AddrParseError),
    IpNet(AddrParseError),
}

Error returned by MMDB parsing, lookup, encoding and writing operations.

Variants

InvalidDatabase(&'static str)

The input does not have a valid MMDB database layout.

InvalidMetadata(&'static str)

The metadata section is absent, malformed, or unsupported.

InvalidNode(u64)

A search-tree node index is outside the declared tree.

InvalidOffset(usize)

A pointer or byte offset points outside the valid database region.

InvalidDataType(u8)

An MMDB data type tag is invalid or unsupported.

InvalidIpVersion(u16)

The requested or declared IP version is not IPv4 or IPv6.

UnexpectedEof

The database ended before the current value could be decoded.

EncodingError(String)

A value cannot be represented by the writer.

DecodingError(String)

A value cannot be decoded into the requested representation.

NotFound

No network in the database matches the requested address.

ResourceLimit(&'static str)

Defensive parser limits rejected excessively deep or large input.

Io(Error)

Underlying file or mapping I/O failed.

SerdeJson(Error)

Serde JSON conversion used by the convenience owned API failed.

AddrParse(AddrParseError)

A standard-library IP address string could not be parsed.

IpNet(AddrParseError)

An IP network/CIDR string could not be parsed.

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 Error for Error

fn custom<T: Display>(message: T) -> Self

Used when a Serialize implementation encounters any error while serializing a type.

impl From<AddrParseError> for Error

fn from(source: AddrParseError) -> Self

Converts to this type from the input type.

impl From<AddrParseError> for Error

fn from(source: AddrParseError) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.