Enum CidrSubnet

pub enum CidrSubnet {
    V4([u8; 4], [u8; 4]),
    V6([u8; 16], [u8; 16]),
}

CIDR subnet, as per RFC 4632

You might know CIDR subnets better by their textual representation where they consist of an ip address followed by a slash and a prefix number, for example 192.168.99.0/24.

The first field in the enum is the address, the second is the mask. Both are specified in network byte order.

Variants

V4([u8; 4], [u8; 4])

V6([u8; 16], [u8; 16])

Implementations

impl CidrSubnet

pub fn from_addr_prefix(addr: IpAddr, prefix: u8) -> CidrSubnet

Obtains the CidrSubnet from an ip address as well as the specified prefix number.

// The "192.0.2.0/24" example from
// https://tools.ietf.org/html/rfc5280#page-42
let addr = IpAddr::from_str("192.0.2.0").unwrap();
let subnet = CidrSubnet::from_addr_prefix(addr, 24);
assert_eq!(subnet, CidrSubnet::V4([0xC0, 0x00, 0x02, 0x00], [0xFF, 0xFF, 0xFF, 0x00]));

pub fn from_v4_prefix(addr: [u8; 4], prefix: u8) -> CidrSubnet

Obtains the CidrSubnet from an IPv4 address in network byte order as well as the specified prefix.

pub fn from_v6_prefix(addr: [u8; 16], prefix: u8) -> CidrSubnet

Obtains the CidrSubnet from an IPv6 address in network byte order as well as the specified prefix.

Trait Implementations

impl Clone for CidrSubnet

fn clone(&self) -> CidrSubnet

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CidrSubnet

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl FromStr for CidrSubnet

Obtains the CidrSubnet from the well-known addr/prefix notation.

// The "192.0.2.0/24" example from
// https://tools.ietf.org/html/rfc5280#page-42
let subnet = CidrSubnet::from_str("192.0.2.0/24").unwrap();
assert_eq!(subnet, CidrSubnet::V4([0xC0, 0x00, 0x02, 0x00], [0xFF, 0xFF, 0xFF, 0x00]));

type Err = ()

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<CidrSubnet, <CidrSubnet as FromStr>::Err>

Parses a string s to return a value of this type.

impl Hash for CidrSubnet

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

where __H: Hasher,

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for CidrSubnet

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for CidrSubnet

impl Eq for CidrSubnet

impl StructuralPartialEq for CidrSubnet