Struct domain::bits::question::Question

pub struct Question<N: DName> { /* fields omitted */ }

A question in a DNS message.

In DNS, a query is determined by three elements: a domain name, a record type, and a class, collectively called a question. This type represents such a question.

Questions are generic over the domain name type. For a question with a ParsedDName, parsing is implemented. Composing, meanwhile, is available with all domain name types.

In order to allow questions on the fly, in particular when creating messages via MessageBuilder, the From trait is implemented for tuples of all three elements of a question as well as for only name and record type assuming Class::In which is likely what you want, anyway.

Methods

impl<N: DName> Question<N>

Creation and Conversion

pub fn new(qname: N, qtype: Rtype, qclass: Class) -> Self

Creates a new question from its constituent elements.

impl<N: DName> Question<N>

Element Access

pub fn qname(&self) -> &N

Returns the requested domain name.

pub fn qtype(&self) -> Rtype

Returns the requested record type.

pub fn qclass(&self) -> Class

Returns the requested class.

impl<'a> Question<ParsedDName<'a>>

Parsing

pub fn parse(parser: &mut Parser<'a>) -> ParseResult<Self>

Parses a question from the beginning of a parser.

impl<N: DName> Question<N>

Composing

pub fn compose<C: AsMut<Composer>>(&self, composer: C) -> ComposeResult<()>

Appends the question to a composition.

Trait Implementations

impl<N: Clone + DName> Clone for Question<N>

fn clone(&self) -> Question<N>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<N: Debug + DName> Debug for Question<N>

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

Formats the value using the given formatter.

impl<N: Eq + DName> Eq for Question<N>

impl<N: Hash + DName> Hash for Question<N>

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

Feeds this value into the given [Hasher].

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

Feeds a slice of this type into the given [Hasher].

impl<N: Ord + DName> Ord for Question<N>

fn cmp(&self, other: &Question<N>) -> Ordering

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

impl<N: PartialEq + DName> PartialEq for Question<N>

fn eq(&self, other: &Question<N>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Question<N>) -> bool

This method tests for !=.

impl<N: PartialOrd + DName> PartialOrd for Question<N>

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

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

fn lt(&self, other: &Question<N>) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Question<N>) -> bool

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

fn gt(&self, other: &Question<N>) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Question<N>) -> bool

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

impl<N: DName> From<(N, Rtype, Class)> for Question<N>

fn from(src: (N, Rtype, Class)) -> Self

Performs the conversion.

impl<N: DName> From<(N, Rtype)> for Question<N>

fn from(src: (N, Rtype)) -> Self

Performs the conversion.

impl<N: DName + Display> Display for Question<N>

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

Formats the value using the given formatter.

impl<N: DName + Octal> Octal for Question<N>

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

Formats the value using the given formatter.

impl<N: DName + LowerHex> LowerHex for Question<N>

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

Formats the value using the given formatter.

impl<N: DName + UpperHex> UpperHex for Question<N>

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

Formats the value using the given formatter.

impl<N: DName + Binary> Binary for Question<N>

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

Formats the value using the given formatter.