Struct c_ares::Flags

pub struct Flags { /* fields omitted */ }

Flags that may be passed when initializing a Channel.

Methods

impl Flags

pub const USEVC: Flags

USEVC: Flags = Flags{bits: c_ares_sys::ARES_FLAG_USEVC,}

Always use TCP queries (the "virtual circuit") instead of UDP queries. Normally, TCP is only used if a UDP query yields a truncated result.

pub const PRIMARY: Flags

PRIMARY: Flags = Flags{bits: c_ares_sys::ARES_FLAG_PRIMARY,}

Only query the first server in the list of servers to query.

pub const IGNTC: Flags

IGNTC: Flags = Flags{bits: c_ares_sys::ARES_FLAG_IGNTC,}

If a truncated response to a UDP query is received, do not fall back to TCP; simply continue on with the truncated response.

pub const NORECURSE: Flags

NORECURSE: Flags = Flags{bits: c_ares_sys::ARES_FLAG_NORECURSE,}

Do not set the "recursion desired" bit on outgoing queries, so that the name server being contacted will not try to fetch the answer from other servers if it doesn't know the answer locally.

pub const STAYOPEN: Flags

STAYOPEN: Flags = Flags{bits: c_ares_sys::ARES_FLAG_STAYOPEN,}

Do not close communications sockets when the number of active queries drops to zero.

pub const NOSEARCH: Flags

NOSEARCH: Flags = Flags{bits: c_ares_sys::ARES_FLAG_NOSEARCH,}

Do not use the default search domains; only query hostnames as-is or as aliases.

pub const NOALIASES: Flags

NOALIASES: Flags = Flags{bits: c_ares_sys::ARES_FLAG_NOALIASES,}

Do not honor the HOSTALIASES environment variable, which normally specifies a file of hostname translations.

pub const NOCHECKRESP: Flags

NOCHECKRESP: Flags = Flags{bits: c_ares_sys::ARES_FLAG_NOCHECKRESP,}

Do not discard responses with the SERVFAIL, NOTIMP, or REFUSED response code or responses whose questions don't match the questions in the request. Primarily useful for writing clients which might be used to test or debug name servers.

pub const EDNS: Flags

EDNS: Flags = Flags{bits: c_ares_sys::ARES_FLAG_EDNS,}

Use Extension Mechanisms for DNS.

pub fn empty() -> Flags

Returns an empty set of flags.

pub fn all() -> Flags

Returns the set containing all flags.

pub fn bits(&self) -> i32

Returns the raw value of the flags currently stored.

pub fn from_bits(bits: i32) -> Option<Flags>

Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.

pub fn from_bits_truncate(bits: i32) -> Flags

Convert from underlying bit representation, dropping any bits that do not correspond to flags.

pub fn is_empty(&self) -> bool

Returns true if no flags are currently stored.

pub fn is_all(&self) -> bool

Returns true if all flags are currently set.

pub fn intersects(&self, other: Flags) -> bool

Returns true if there are flags common to both self and other.

pub fn contains(&self, other: Flags) -> bool

Returns true all of the flags in other are contained within self.

pub fn insert(&mut self, other: Flags)

Inserts the specified flags in-place.

pub fn remove(&mut self, other: Flags)

Removes the specified flags in-place.

pub fn toggle(&mut self, other: Flags)

Toggles the specified flags in-place.

pub fn set(&mut self, other: Flags, value: bool)

Inserts or removes the specified flags depending on the passed value.

Trait Implementations

impl Copy for Flags

impl PartialEq for Flags

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

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

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

This method tests for !=.

impl Eq for Flags

impl Clone for Flags

fn clone(&self) -> Flags

Returns a copy of the value.

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

Performs copy-assignment from source.

impl PartialOrd for Flags

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

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

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

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

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

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

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

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

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

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

impl Ord for Flags

fn cmp(&self, other: &Flags) -> 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 Hash for Flags

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,

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

impl Debug for Flags

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

Formats the value using the given formatter.

impl Binary for Flags

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

Formats the value using the given formatter.

impl Octal for Flags

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

Formats the value using the given formatter.

impl LowerHex for Flags

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

Formats the value using the given formatter.

impl UpperHex for Flags

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

Formats the value using the given formatter.

impl BitOr for Flags

type Output = Flags

The resulting type after applying the | operator.

fn bitor(self, other: Flags) -> Flags

Returns the union of the two sets of flags.

impl BitOrAssign for Flags

fn bitor_assign(&mut self, other: Flags)

Adds the set of flags.

impl BitXor for Flags

type Output = Flags

The resulting type after applying the ^ operator.

fn bitxor(self, other: Flags) -> Flags

Returns the left flags, but with all the right flags toggled.

impl BitXorAssign for Flags

fn bitxor_assign(&mut self, other: Flags)

Toggles the set of flags.

impl BitAnd for Flags

type Output = Flags

The resulting type after applying the & operator.

fn bitand(self, other: Flags) -> Flags

Returns the intersection between the two sets of flags.

impl BitAndAssign for Flags

fn bitand_assign(&mut self, other: Flags)

Disables all flags disabled in the set.

impl Sub for Flags

type Output = Flags

The resulting type after applying the - operator.

fn sub(self, other: Flags) -> Flags

Returns the set difference of the two sets of flags.

impl SubAssign for Flags

fn sub_assign(&mut self, other: Flags)

Disables all flags enabled in the set.

impl Not for Flags

type Output = Flags

The resulting type after applying the ! operator.

fn not(self) -> Flags

Returns the complement of this set of flags.

impl Extend<Flags> for Flags

fn extend<T: IntoIterator<Item = Flags>>(&mut self, iterator: T)

Extends a collection with the contents of an iterator.

impl FromIterator<Flags> for Flags

fn from_iter<T: IntoIterator<Item = Flags>>(iterator: T) -> Flags

Creates a value from an iterator.