Struct c_ares::Flags
[−]
pub struct Flags { /* fields omitted */ }
Flags that may be passed when initializing a Channel
.
Methods
impl Flags
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.
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.
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.
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.
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.
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.
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.
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.
const EDNS: Flags
EDNS: Flags = Flags{bits: c_ares_sys::ARES_FLAG_EDNS,}
Use Extension Mechanisms for DNS.
fn empty() -> Flags
Returns an empty set of flags.
fn all() -> Flags
Returns the set containing all flags.
fn bits(&self) -> i32
Returns the raw value of the flags currently stored.
fn from_bits(bits: i32) -> Option<Flags>
Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.
fn from_bits_truncate(bits: i32) -> Flags
Convert from underlying bit representation, dropping any bits that do not correspond to flags.
fn is_empty(&self) -> bool
Returns true
if no flags are currently stored.
fn is_all(&self) -> bool
Returns true
if all flags are currently set.
fn intersects(&self, other: Flags) -> bool
Returns true
if there are flags common to both self
and other
.
fn contains(&self, other: Flags) -> bool
Returns true
all of the flags in other
are contained within self
.
fn insert(&mut self, other: Flags)
Inserts the specified flags in-place.
fn remove(&mut self, other: Flags)
Removes the specified flags in-place.
fn toggle(&mut self, other: Flags)
Toggles the specified flags in-place.
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, __arg_0: &Flags) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, __arg_0: &Flags) -> bool
This method tests for !=
.
impl Eq for Flags
impl Clone for Flags
fn clone(&self) -> Flags
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
Performs copy-assignment from source
. Read more
impl PartialOrd for Flags
fn partial_cmp(&self, __arg_0: &Flags) -> Option<Ordering>
This method returns an ordering between self
and other
values if one exists. Read more
fn lt(&self, __arg_0: &Flags) -> bool
This method tests less than (for self
and other
) and is used by the <
operator. Read more
fn le(&self, __arg_0: &Flags) -> bool
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
fn gt(&self, __arg_0: &Flags) -> bool
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
fn ge(&self, __arg_0: &Flags) -> bool
This method tests greater than or equal to (for self
and other
) and is used by the >=
operator. Read more
impl Ord for Flags
fn cmp(&self, __arg_0: &Flags) -> Ordering
This method returns an Ordering
between self
and other
. Read more
fn max(self, other: Self) -> Self
1.22.0[src]
Compares and returns the maximum of two values. Read more
fn min(self, other: Self) -> Self
1.22.0[src]
Compares and returns the minimum of two values. Read more
impl Hash for Flags
fn hash<__H: Hasher>(&self, __arg_0: &mut __H)
Feeds this value into the given [Hasher
]. Read more
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0[src]
H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl Debug for Flags
impl Binary for Flags
impl Octal for Flags
impl LowerHex for Flags
impl UpperHex for Flags
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. Read more
impl FromIterator<Flags> for Flags
fn from_iter<T: IntoIterator<Item = Flags>>(iterator: T) -> Flags
Creates a value from an iterator. Read more