Enum ResponseCode 

#[non_exhaustive]
pub enum ResponseCode {
    NoError,
    FormatError,
    ServerFailure,
    NameError,
    NotImplemented,
    Refused,
    Unknown(u8),
}

DNS response code. mDNS requires ResponseCode::NoError in both queries and responses; other values are kept for round-trip correctness.

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.

NoError

No error (0).

FormatError

Format error (1).

ServerFailure

Server failure (2).

NameError

Name error (3, “NXDOMAIN”).

NotImplemented

Not implemented (4).

Refused

Refused (5).

Unknown(u8)

Lossless escape for unknown response codes.

Implementations

impl ResponseCode

pub const fn is_no_error(&self) -> bool

Returns true if this value is of type NoError. Returns false otherwise

pub const fn is_format_error(&self) -> bool

Returns true if this value is of type FormatError. Returns false otherwise

pub const fn is_server_failure(&self) -> bool

Returns true if this value is of type ServerFailure. Returns false otherwise

pub const fn is_name_error(&self) -> bool

Returns true if this value is of type NameError. Returns false otherwise

pub const fn is_not_implemented(&self) -> bool

Returns true if this value is of type NotImplemented. Returns false otherwise

pub const fn is_refused(&self) -> bool

Returns true if this value is of type Refused. Returns false otherwise

pub const fn is_unknown(&self) -> bool

Returns true if this value is of type Unknown. Returns false otherwise

impl ResponseCode

pub fn unwrap_no_error(self)

Unwraps this value to the ResponseCode::NoError variant. Panics if this value is of any other type.

pub fn unwrap_format_error(self)

Unwraps this value to the ResponseCode::FormatError variant. Panics if this value is of any other type.

pub fn unwrap_server_failure(self)

Unwraps this value to the ResponseCode::ServerFailure variant. Panics if this value is of any other type.

pub fn unwrap_name_error(self)

Unwraps this value to the ResponseCode::NameError variant. Panics if this value is of any other type.

pub fn unwrap_not_implemented(self)

Unwraps this value to the ResponseCode::NotImplemented variant. Panics if this value is of any other type.

pub fn unwrap_refused(self)

Unwraps this value to the ResponseCode::Refused variant. Panics if this value is of any other type.

pub fn unwrap_unknown(self) -> u8

Unwraps this value to the ResponseCode::Unknown variant. Panics if this value is of any other type.

impl ResponseCode

pub fn try_unwrap_no_error(self) -> Result<(), TryUnwrapError<Self>>

Attempts to unwrap this value to the ResponseCode::NoError variant. Returns a [TryUnwrapError] with the original value if this value is of any other type.

pub fn try_unwrap_format_error(self) -> Result<(), TryUnwrapError<Self>>

Attempts to unwrap this value to the ResponseCode::FormatError variant. Returns a [TryUnwrapError] with the original value if this value is of any other type.

pub fn try_unwrap_server_failure(self) -> Result<(), TryUnwrapError<Self>>

Attempts to unwrap this value to the ResponseCode::ServerFailure variant. Returns a [TryUnwrapError] with the original value if this value is of any other type.

pub fn try_unwrap_name_error(self) -> Result<(), TryUnwrapError<Self>>

Attempts to unwrap this value to the ResponseCode::NameError variant. Returns a [TryUnwrapError] with the original value if this value is of any other type.

pub fn try_unwrap_not_implemented(self) -> Result<(), TryUnwrapError<Self>>

Attempts to unwrap this value to the ResponseCode::NotImplemented variant. Returns a [TryUnwrapError] with the original value if this value is of any other type.

pub fn try_unwrap_refused(self) -> Result<(), TryUnwrapError<Self>>

Attempts to unwrap this value to the ResponseCode::Refused variant. Returns a [TryUnwrapError] with the original value if this value is of any other type.

pub fn try_unwrap_unknown(self) -> Result<u8, TryUnwrapError<Self>>

Attempts to unwrap this value to the ResponseCode::Unknown variant. Returns a [TryUnwrapError] with the original value if this value is of any other type.

impl ResponseCode

pub const fn as_str(&self) -> &'static str

Canonical lowercase slug for this response code.

pub const fn to_u8(self) -> u8

Returns the wire-format u8 value.

pub const fn from_u8(v: u8) -> Self

Reconstructs a ResponseCode from a wire-format u8. Always succeeds — unknown values land in Unknown(v).

Trait Implementations

impl Clone for ResponseCode

fn clone(&self) -> ResponseCode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ResponseCode

impl Debug for ResponseCode

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

Formats the value using the given formatter.

impl Display for ResponseCode

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

Formats the value using the given formatter.

impl Eq for ResponseCode

impl Hash for ResponseCode

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for ResponseCode

fn cmp(&self, other: &ResponseCode) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for ResponseCode

fn eq(&self, other: &ResponseCode) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for ResponseCode

fn partial_cmp(&self, other: &ResponseCode) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for ResponseCode