Struct Flags 

pub struct Flags { /* private fields */ }

Packed 16-bit DNS header flags field.

Implementations

impl Flags

pub const fn new() -> Flags

Empty flags (all zero — query, no error).

pub const fn from_u16(bits: u16) -> Flags

Constructs from raw wire bits.

pub const fn to_u16(&self) -> u16

Returns the raw wire bits.

pub const fn is_response(&self) -> bool

true if this is a response (QR bit set).

pub const fn opcode(&self) -> Opcode

Opcode (4 bits).

pub const fn is_authoritative(&self) -> bool

true if authoritative answer.

pub const fn is_truncated(&self) -> bool

true if truncated (TC bit).

pub const fn is_recursion_desired(&self) -> bool

true if recursion desired (RD bit).

pub const fn is_recursion_available(&self) -> bool

true if recursion available (RA bit).

pub const fn response_code(&self) -> ResponseCode

Response code (4 bits).

pub const fn set_response(&mut self) -> &mut Flags

Sets the QR bit (this is a response).

pub const fn with_response(self) -> Flags

Same as Self::set_response but consuming.

pub const fn clear_response(&mut self) -> &mut Flags

Clears the QR bit (this is a query).

pub const fn set_opcode(&mut self, op: Opcode) -> &mut Flags

Sets the opcode.

pub const fn with_opcode(self, op: Opcode) -> Flags

Consuming version of Self::set_opcode.

pub const fn set_authoritative(&mut self) -> &mut Flags

Sets the AA bit (authoritative answer).

pub const fn with_authoritative(self) -> Flags

Consuming version.

pub const fn clear_authoritative(&mut self) -> &mut Flags

Clears the AA bit.

pub const fn set_truncated(&mut self) -> &mut Flags

Sets the TC bit.

pub const fn with_truncated(self) -> Flags

Consuming version.

pub const fn clear_truncated(&mut self) -> &mut Flags

Clears the TC bit.

pub const fn set_response_code(&mut self, rc: ResponseCode) -> &mut Flags

Sets the response code.

pub const fn with_response_code(self, rc: ResponseCode) -> Flags

Consuming version.

Trait Implementations

impl Clone for Flags

fn clone(&self) -> Flags

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Flags

impl Debug for Flags

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

Formats the value using the given formatter.

impl Default for Flags

fn default() -> Flags

Returns the “default value” for a type.

impl Eq for Flags

impl Hash for Flags

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

where __H: Hasher,

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 PartialEq for Flags

fn eq(&self, other: &Flags) -> 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 StructuralPartialEq for Flags