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Add Ipv6Addr::is_unicast

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This commit is contained in:
Christiaan Dirkx 2021-05-31 09:56:14 +02:00
parent dc08641128
commit 7f27b29fd4
1 changed files with 28 additions and 0 deletions
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28
library/std/src/net/ip.rs
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@ -1267,6 +1267,34 @@ impl Ipv6Addr {
(self.segments()[0] & 0xfe00) == 0xfc00
}
/// Returns [`true`] if this is a unicast address, as defined by [IETF RFC 4291].
/// Any address that is not a [multicast address] (`ff00::/8`) is unicast.
///
/// [IETF RFC 4291]: https://tools.ietf.org/html/rfc4291
/// [multicast address]: Ipv6Addr::is_multicast
///
/// # Examples
///
/// ```
/// #![feature(ip)]
///
/// use std::net::Ipv6Addr;
///
/// // The unspecified and loopback addresses are unicast.
/// assert_eq!(Ipv6Addr::UNSPECIFIED.is_unicast(), true);
/// assert_eq!(Ipv6Addr::LOCALHOST.is_unicast(), true);
///
/// // Any address that is not a multicast address (`ff00::/8`) is unicast.
/// assert_eq!(Ipv6Addr::new(0x2001, 0xdb8, 0, 0, 0, 0, 0, 0).is_unicast(), true);
/// assert_eq!(Ipv6Addr::new(0xff00, 0, 0, 0, 0, 0, 0, 0).is_unicast(), false);
/// ```
#[rustc_const_unstable(feature = "const_ipv6", issue = "76205")]
#[unstable(feature = "ip", issue = "27709")]
#[inline]
pub const fn is_unicast(&self) -> bool {
!self.is_multicast()
}
/// Returns `true` if the address is a unicast address with link-local scope,
/// as defined in [RFC 4291].
///