Enum hickory_recursor::error::ErrorKind

#[non_exhaustive]
pub enum ErrorKind {
    Message(&'static str),
    Msg(String),
    Forward(Name),
    Io(Error),
    Proto(ProtoError),
    Resolve(ResolveError),
    Timeout,
}

The error kind for errors that get returned in the crate

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.

Message(&'static str)

An error with an arbitrary message, referenced as &’static str

Msg(String)

An error with an arbitrary message, stored as String

Forward(Name)

Upstream DNS authority returned a Referral to another nameserver

Io(Error)

An error got returned from IO

Proto(ProtoError)

An error got returned by the hickory-proto crate

Resolve(ResolveError)

An error got returned by the hickory-proto crate

Timeout

A request timed out

Implementations

impl ErrorKind

pub fn is_message(&self) -> bool

Returns true if this is a ErrorKind::Message, otherwise false

pub fn as_message_mut(&mut self) -> Option<&mut &'static str>

Optionally returns mutable references to the inner fields if this is a ErrorKind::Message, otherwise None

pub fn as_message(&self) -> Option<&&'static str>

Optionally returns references to the inner fields if this is a ErrorKind::Message, otherwise None

pub fn into_message(self) -> Result<&'static str, Self>

Returns the inner fields if this is a ErrorKind::Message, otherwise returns back the enum in the Err case of the result

pub fn is_msg(&self) -> bool

Returns true if this is a ErrorKind::Msg, otherwise false

pub fn as_msg_mut(&mut self) -> Option<&mut String>

Optionally returns mutable references to the inner fields if this is a ErrorKind::Msg, otherwise None

pub fn as_msg(&self) -> Option<&String>

Optionally returns references to the inner fields if this is a ErrorKind::Msg, otherwise None

pub fn into_msg(self) -> Result<String, Self>

Returns the inner fields if this is a ErrorKind::Msg, otherwise returns back the enum in the Err case of the result

pub fn is_forward(&self) -> bool

Returns true if this is a ErrorKind::Forward, otherwise false

pub fn as_forward_mut(&mut self) -> Option<&mut Name>

Optionally returns mutable references to the inner fields if this is a ErrorKind::Forward, otherwise None

pub fn as_forward(&self) -> Option<&Name>

Optionally returns references to the inner fields if this is a ErrorKind::Forward, otherwise None

pub fn into_forward(self) -> Result<Name, Self>

Returns the inner fields if this is a ErrorKind::Forward, otherwise returns back the enum in the Err case of the result

pub fn is_io(&self) -> bool

Returns true if this is a ErrorKind::Io, otherwise false

pub fn as_io_mut(&mut self) -> Option<&mut Error>

Optionally returns mutable references to the inner fields if this is a ErrorKind::Io, otherwise None

pub fn as_io(&self) -> Option<&Error>

Optionally returns references to the inner fields if this is a ErrorKind::Io, otherwise None

pub fn into_io(self) -> Result<Error, Self>

Returns the inner fields if this is a ErrorKind::Io, otherwise returns back the enum in the Err case of the result

pub fn is_proto(&self) -> bool

Returns true if this is a ErrorKind::Proto, otherwise false

pub fn as_proto_mut(&mut self) -> Option<&mut ProtoError>

Optionally returns mutable references to the inner fields if this is a ErrorKind::Proto, otherwise None

pub fn as_proto(&self) -> Option<&ProtoError>

Optionally returns references to the inner fields if this is a ErrorKind::Proto, otherwise None

pub fn into_proto(self) -> Result<ProtoError, Self>

Returns the inner fields if this is a ErrorKind::Proto, otherwise returns back the enum in the Err case of the result

pub fn is_resolve(&self) -> bool

Returns true if this is a ErrorKind::Resolve, otherwise false

pub fn as_resolve_mut(&mut self) -> Option<&mut ResolveError>

Optionally returns mutable references to the inner fields if this is a ErrorKind::Resolve, otherwise None

pub fn as_resolve(&self) -> Option<&ResolveError>

Optionally returns references to the inner fields if this is a ErrorKind::Resolve, otherwise None

pub fn into_resolve(self) -> Result<ResolveError, Self>

Returns the inner fields if this is a ErrorKind::Resolve, otherwise returns back the enum in the Err case of the result

pub fn is_timeout(&self) -> bool

Returns true if this is a ErrorKind::Timeout, otherwise false

Trait Implementations

impl Clone for ErrorKind

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ErrorKind

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

Formats the value using the given formatter.

impl Display for ErrorKind

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

Formats the value using the given formatter.

impl Error for ErrorKind

fn source(&self) -> Option<&(dyn Error + 'static)>

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 ErrorKind

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<ProtoError> for ErrorKind

fn from(source: ProtoError) -> Self

Converts to this type from the input type.