Enum Opcode

pub enum Opcode {
    Query,
    IQuery,
    Status,
    Notify,
    Update,
    Dso,
    Int(u8),
}

DNS OpCodes.

The opcode specifies the kind of query to be performed.

The opcode is initially defined in RFC 1035. All currently assigned values can be found in the IANA registry. This type is complete as of 2019-01-28.

Variants

Query

A standard query.

This query requests all records matching the name, class, and record type given in the query’s question section.

This value is defined in RFC 1035.

IQuery

An inverse query (IQUERY) (obsolete).

The idea behind inverse queries was to provide a single answer and ask the DNS for all the questions that would lead to this answer. This kind of query has always been optional, was never widely supported, and has therefore been declared obsolete.

This value was defined in RFC 1035 and obsoleted by RFC 3425.

Status

A server status request.

This value is defined in RFC 1035. The status request itself was defined as experimental and ‘to be defined’ in RFC 1034 and seems to never have been mentioned ever again.

Notify

A NOTIFY query.

NOTIFY queries allow master servers to inform slave servers when a zone has changed.

This value and the NOTIFY query are defined in RFC 1996.

Update

An UPDATE query.

The UPDATE query can be used to alter zone content managed by a master server.

This value and the UPDATE query are defined in RFC 2136.

Dso

DNS Stateful operations (DSO).

This value is defined in draft-ietf-dnsop-session-signal.

Int(u8)

A raw integer opcode value.

When converting to an u8, only the lower four bits are used.

Implementations

impl Opcode

pub fn from_int(value: u8) -> Opcode

Creates an Opcode value from an integer value.

Only considers the lower four bits of value.

pub fn to_int(self) -> u8

Returns the integer value for this opcode.

Trait Implementations

impl Clone for Opcode

fn clone(&self) -> Opcode

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Opcode

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

Formats the value using the given formatter.

impl Display for Opcode

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

Formats the value using the given formatter.

impl From<Opcode> for u8

fn from(value: Opcode) -> u8

Converts to this type from the input type.

impl From<u8> for Opcode

fn from(value: u8) -> Opcode

Converts to this type from the input type.

impl Hash for Opcode

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 Opcode

fn cmp(&self, other: &Self) -> 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<Opcode> for u8

fn eq(&self, other: &Opcode) -> 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 PartialEq<u8> for Opcode

fn eq(&self, other: &u8) -> 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 PartialEq for Opcode

fn eq(&self, other: &Opcode) -> 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<Opcode> for u8

fn partial_cmp(&self, other: &Opcode) -> 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 PartialOrd<u8> for Opcode

fn partial_cmp(&self, other: &u8) -> 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 PartialOrd for Opcode

fn partial_cmp(&self, other: &Self) -> 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 Copy for Opcode

impl Eq for Opcode