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std::net: add Ipv4Addr::is_shared()

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This commit is contained in:
Corentin Henry 2018-11-19 09:39:05 -08:00
parent f87b96773b
commit 67291cc971
1 changed files with 22 additions and 0 deletions
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22
src/libstd/net/ip.rs
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@ -532,6 +532,28 @@ impl Ipv4Addr {
!self.is_broadcast() && !self.is_documentation() && !self.is_unspecified()
}
/// Returns [`true`] if this address is part of the Shared Address Space defined in
/// [IETF RFC 6598] (`100.64.0.0/10`).
///
/// [IETF RFC 6598]: https://tools.ietf.org/html/rfc6598
/// [`true`]: ../../std/primitive.bool.html
///
/// # Examples
///
/// ```
/// #![feature(ip)]
/// use std::net::Ipv4Addr;
///
/// fn main() {
/// assert_eq!(Ipv4Addr::new(100, 64, 0, 0).is_shared(), true);
/// assert_eq!(Ipv4Addr::new(100, 127, 255, 255).is_shared(), true);
/// assert_eq!(Ipv4Addr::new(100, 128, 0, 0).is_shared(), false);
/// }
/// ```
pub fn is_shared(&self) -> bool {
self.octets()[0] == 100 && (self.octets()[1] & 0b1100_0000 == 0b0100_0000)
}
/// Returns [`true`] if this address is part of `192.0.0.0/24`, which is reserved to
/// IANA for IETF protocol assignments, as documented in [IETF RFC 6890].
///