Struct asn_db::Ipv4Net

pub struct Ipv4Net { /* fields omitted */ }

An IPv4 network address.

See IpNet for a type encompassing both IPv4 and IPv6 network addresses.

Textual representation

Ipv4Net provides a FromStr implementation for parsing network addresses represented in CIDR notation. See IETF RFC 4632 for the CIDR notation.

Examples

use std::net::Ipv4Addr;
use ipnet::Ipv4Net;

let net: Ipv4Net = "10.1.1.0/24".parse().unwrap();
assert_eq!(Ok(net.network()), "10.1.1.0".parse());

Methods

impl Ipv4Net

pub fn new(ip: Ipv4Addr, prefix_len: u8) -> Result<Ipv4Net, PrefixLenError>

Creates a new IPv4 network address from an Ipv4Addr and prefix length.

Examples

use std::net::Ipv4Addr;
use ipnet::{Ipv4Net, PrefixLenError};

let net = Ipv4Net::new(Ipv4Addr::new(10, 1, 1, 0), 24);
assert!(net.is_ok());

let bad_prefix_len = Ipv4Net::new(Ipv4Addr::new(10, 1, 1, 0), 33);
assert_eq!(bad_prefix_len, Err(PrefixLenError));

pub fn trunc(&self) -> Ipv4Net

Returns a copy of the network with the address truncated to the prefix length.

Examples

assert_eq!(
    "192.168.12.34/16".parse::<Ipv4Net>().unwrap().trunc(),
    "192.168.0.0/16".parse().unwrap()
);

pub fn addr(&self) -> Ipv4Addr

Returns the address.

pub fn prefix_len(&self) -> u8

Returns the prefix length.

pub fn max_prefix_len(&self) -> u8

Returns the maximum valid prefix length.

pub fn netmask(&self) -> Ipv4Addr

Returns the network mask.

Examples

let net: Ipv4Net = "10.1.0.0/20".parse().unwrap();
assert_eq!(Ok(net.netmask()), "255.255.240.0".parse());

pub fn hostmask(&self) -> Ipv4Addr

Returns the host mask.

Examples

let net: Ipv4Net = "10.1.0.0/20".parse().unwrap();
assert_eq!(Ok(net.hostmask()), "0.0.15.255".parse());

pub fn network(&self) -> Ipv4Addr

Returns the network address.

Examples

let net: Ipv4Net = "172.16.123.123/16".parse().unwrap();
assert_eq!(Ok(net.network()), "172.16.0.0".parse());

pub fn broadcast(&self) -> Ipv4Addr

Returns the broadcast address.

Examples

let net: Ipv4Net = "172.16.0.0/22".parse().unwrap();
assert_eq!(Ok(net.broadcast()), "172.16.3.255".parse());

pub fn supernet(&self) -> Option<Ipv4Net>

Returns the Ipv4Net that contains this one.

Examples

let n1: Ipv4Net = "172.16.1.0/24".parse().unwrap();
let n2: Ipv4Net = "172.16.0.0/23".parse().unwrap();
let n3: Ipv4Net = "172.16.0.0/0".parse().unwrap();

assert_eq!(n1.supernet().unwrap(), n2);
assert_eq!(n3.supernet(), None);

pub fn is_sibling(&self, other: &Ipv4Net) -> bool

Returns true if this network and the given network are children of the same supernet.

Examples

let n1: Ipv4Net = "10.1.0.0/24".parse().unwrap();
let n2: Ipv4Net = "10.1.1.0/24".parse().unwrap();
let n3: Ipv4Net = "10.1.2.0/24".parse().unwrap();

assert!(n1.is_sibling(&n2));
assert!(!n2.is_sibling(&n3));

pub fn hosts(&self) -> Ipv4AddrRange

Return an Iterator over the host addresses in this network.

If the prefix length is less than 31 both the network address and broadcast address are excluded. These are only valid host addresses when the prefix length is 31.

Examples

let net: Ipv4Net = "10.0.0.0/30".parse().unwrap();
assert_eq!(net.hosts().collect::<Vec<Ipv4Addr>>(), vec![
    "10.0.0.1".parse::<Ipv4Addr>().unwrap(),
    "10.0.0.2".parse().unwrap(),
]);

let net: Ipv4Net = "10.0.0.0/31".parse().unwrap();
assert_eq!(net.hosts().collect::<Vec<Ipv4Addr>>(), vec![
    "10.0.0.0".parse::<Ipv4Addr>().unwrap(),
    "10.0.0.1".parse().unwrap(),
]);

pub fn subnets(&self, new_prefix_len: u8) -> Result<Ipv4Subnets, PrefixLenError>

Returns an Iterator over the subnets of this network with the given prefix length.

Examples

let net: Ipv4Net = "10.0.0.0/24".parse().unwrap();
assert_eq!(net.subnets(26).unwrap().collect::<Vec<Ipv4Net>>(), vec![
    "10.0.0.0/26".parse::<Ipv4Net>().unwrap(),
    "10.0.0.64/26".parse().unwrap(),
    "10.0.0.128/26".parse().unwrap(),
    "10.0.0.192/26".parse().unwrap(),
]);

let net: Ipv4Net = "10.0.0.0/30".parse().unwrap();
assert_eq!(net.subnets(32).unwrap().collect::<Vec<Ipv4Net>>(), vec![
    "10.0.0.0/32".parse::<Ipv4Net>().unwrap(),
    "10.0.0.1/32".parse().unwrap(),
    "10.0.0.2/32".parse().unwrap(),
    "10.0.0.3/32".parse().unwrap(),
]);

let net: Ipv4Net = "10.0.0.0/24".parse().unwrap();
assert_eq!(net.subnets(23), Err(PrefixLenError));

let net: Ipv4Net = "10.0.0.0/24".parse().unwrap();
assert_eq!(net.subnets(33), Err(PrefixLenError));

pub fn contains<T>(&self, other: T) -> bool where
    Ipv4Net: Contains<T>, 

Test if a network address contains either another network address or an IP address.

Examples

let net: Ipv4Net = "192.168.0.0/24".parse().unwrap();
let net_yes: Ipv4Net = "192.168.0.0/25".parse().unwrap();
let net_no: Ipv4Net = "192.168.0.0/23".parse().unwrap();
let ip_yes: Ipv4Addr = "192.168.0.1".parse().unwrap();
let ip_no: Ipv4Addr = "192.168.1.0".parse().unwrap();

assert!(net.contains(&net));
assert!(net.contains(&net_yes));
assert!(!net.contains(&net_no));
assert!(net.contains(&ip_yes));
assert!(!net.contains(&ip_no));

pub fn aggregate(networks: &Vec<Ipv4Net>) -> Vec<Ipv4Net>

Aggregate a Vec of Ipv4Nets and return the result as a new Vec.

Examples

let nets = vec![
    "10.0.0.0/24".parse::<Ipv4Net>().unwrap(),
    "10.0.1.0/24".parse().unwrap(),
    "10.0.2.0/24".parse().unwrap(),
];

assert_eq!(Ipv4Net::aggregate(&nets), vec![
    "10.0.0.0/23".parse::<Ipv4Net>().unwrap(),
    "10.0.2.0/24".parse().unwrap(),
]);

Trait Implementations

impl Debug for Ipv4Net

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

Formats the value using the given formatter.

impl Eq for Ipv4Net

impl PartialEq<Ipv4Net> for Ipv4Net

fn eq(&self, other: &Ipv4Net) -> bool

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

fn ne(&self, other: &Ipv4Net) -> bool

This method tests for !=.

impl Clone for Ipv4Net

fn clone(&self) -> Ipv4Net

Returns a copy of the value.

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

Performs copy-assignment from source.

impl FromStr for Ipv4Net

type Err = AddrParseError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Ipv4Net, AddrParseError>

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

impl Ord for Ipv4Net

fn cmp(&self, other: &Ipv4Net) -> 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 Copy for Ipv4Net

impl PartialOrd<Ipv4Net> for Ipv4Net

fn partial_cmp(&self, other: &Ipv4Net) -> Option<Ordering>

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

fn lt(&self, other: &Ipv4Net) -> bool

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

fn le(&self, other: &Ipv4Net) -> bool

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

fn gt(&self, other: &Ipv4Net) -> bool

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

fn ge(&self, other: &Ipv4Net) -> bool

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

impl Hash for Ipv4Net

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, 

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

impl Display for Ipv4Net

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

Formats the value using the given formatter.