Struct Ipv4Addr 

pub struct Ipv4Addr(/* private fields */);

An IPv4 address parsed from configuration.

Methods from Deref<Target = Ipv4Addr>

pub const BITS: u32 = 32

pub const LOCALHOST: Ipv4Addr

pub const UNSPECIFIED: Ipv4Addr

pub const BROADCAST: Ipv4Addr

pub fn octets(&self) -> [u8; 4]

Returns the four eight-bit integers that make up this address.

Examples

use std::net::Ipv4Addr;

let addr = Ipv4Addr::new(127, 0, 0, 1);
assert_eq!(addr.octets(), [127, 0, 0, 1]);

pub fn as_octets(&self) -> &[u8; 4]

🔬This is a nightly-only experimental API. (ip_as_octets)

Returns the four eight-bit integers that make up this address as a slice.

Examples

#![feature(ip_as_octets)]

use std::net::Ipv4Addr;

let addr = Ipv4Addr::new(127, 0, 0, 1);
assert_eq!(addr.as_octets(), &[127, 0, 0, 1]);

pub fn is_unspecified(&self) -> bool

Returns true for the special ‘unspecified’ address (0.0.0.0).

This property is defined in UNIX Network Programming, Second Edition, W. Richard Stevens, p. 891; see also ip7.

Examples

use std::net::Ipv4Addr;

assert_eq!(Ipv4Addr::new(0, 0, 0, 0).is_unspecified(), true);
assert_eq!(Ipv4Addr::new(45, 22, 13, 197).is_unspecified(), false);

pub fn is_loopback(&self) -> bool

Returns true if this is a loopback address (127.0.0.0/8).

This property is defined by IETF RFC 1122.

Examples

use std::net::Ipv4Addr;

assert_eq!(Ipv4Addr::new(127, 0, 0, 1).is_loopback(), true);
assert_eq!(Ipv4Addr::new(45, 22, 13, 197).is_loopback(), false);

pub fn is_private(&self) -> bool

Returns true if this is a private address.

The private address ranges are defined in IETF RFC 1918 and include:

• 10.0.0.0/8
• 172.16.0.0/12
• 192.168.0.0/16

Examples

use std::net::Ipv4Addr;

assert_eq!(Ipv4Addr::new(10, 0, 0, 1).is_private(), true);
assert_eq!(Ipv4Addr::new(10, 10, 10, 10).is_private(), true);
assert_eq!(Ipv4Addr::new(172, 16, 10, 10).is_private(), true);
assert_eq!(Ipv4Addr::new(172, 29, 45, 14).is_private(), true);
assert_eq!(Ipv4Addr::new(172, 32, 0, 2).is_private(), false);
assert_eq!(Ipv4Addr::new(192, 168, 0, 2).is_private(), true);
assert_eq!(Ipv4Addr::new(192, 169, 0, 2).is_private(), false);

pub fn is_link_local(&self) -> bool

Returns true if the address is link-local (169.254.0.0/16).

This property is defined by IETF RFC 3927.

Examples

use std::net::Ipv4Addr;

assert_eq!(Ipv4Addr::new(169, 254, 0, 0).is_link_local(), true);
assert_eq!(Ipv4Addr::new(169, 254, 10, 65).is_link_local(), true);
assert_eq!(Ipv4Addr::new(16, 89, 10, 65).is_link_local(), false);

pub fn is_global(&self) -> bool

🔬This is a nightly-only experimental API. (ip)

Returns true if the address appears to be globally reachable as specified by the IANA IPv4 Special-Purpose Address Registry.

Whether or not an address is practically reachable will depend on your network configuration. Most IPv4 addresses are globally reachable, unless they are specifically defined as not globally reachable.

Non-exhaustive list of notable addresses that are not globally reachable:

• The unspecified address (is_unspecified)
• Addresses reserved for private use (is_private)
• Addresses in the shared address space (is_shared)
• Loopback addresses (is_loopback)
• Link-local addresses (is_link_local)
• Addresses reserved for documentation (is_documentation)
• Addresses reserved for benchmarking (is_benchmarking)
• Reserved addresses (is_reserved)
• The broadcast address (is_broadcast)

For the complete overview of which addresses are globally reachable, see the table at the IANA IPv4 Special-Purpose Address Registry.

Examples

#![feature(ip)]

use std::net::Ipv4Addr;

// Most IPv4 addresses are globally reachable:
assert_eq!(Ipv4Addr::new(80, 9, 12, 3).is_global(), true);

// However some addresses have been assigned a special meaning
// that makes them not globally reachable. Some examples are:

// The unspecified address (`0.0.0.0`)
assert_eq!(Ipv4Addr::UNSPECIFIED.is_global(), false);

// Addresses reserved for private use (`10.0.0.0/8`, `172.16.0.0/12`, 192.168.0.0/16)
assert_eq!(Ipv4Addr::new(10, 254, 0, 0).is_global(), false);
assert_eq!(Ipv4Addr::new(192, 168, 10, 65).is_global(), false);
assert_eq!(Ipv4Addr::new(172, 16, 10, 65).is_global(), false);

// Addresses in the shared address space (`100.64.0.0/10`)
assert_eq!(Ipv4Addr::new(100, 100, 0, 0).is_global(), false);

// The loopback addresses (`127.0.0.0/8`)
assert_eq!(Ipv4Addr::LOCALHOST.is_global(), false);

// Link-local addresses (`169.254.0.0/16`)
assert_eq!(Ipv4Addr::new(169, 254, 45, 1).is_global(), false);

// Addresses reserved for documentation (`192.0.2.0/24`, `198.51.100.0/24`, `203.0.113.0/24`)
assert_eq!(Ipv4Addr::new(192, 0, 2, 255).is_global(), false);
assert_eq!(Ipv4Addr::new(198, 51, 100, 65).is_global(), false);
assert_eq!(Ipv4Addr::new(203, 0, 113, 6).is_global(), false);

// Addresses reserved for benchmarking (`198.18.0.0/15`)
assert_eq!(Ipv4Addr::new(198, 18, 0, 0).is_global(), false);

// Reserved addresses (`240.0.0.0/4`)
assert_eq!(Ipv4Addr::new(250, 10, 20, 30).is_global(), false);

// The broadcast address (`255.255.255.255`)
assert_eq!(Ipv4Addr::BROADCAST.is_global(), false);

// For a complete overview see the IANA IPv4 Special-Purpose Address Registry.

pub fn is_shared(&self) -> bool

🔬This is a nightly-only experimental API. (ip)

Returns true if this address is part of the Shared Address Space defined in IETF RFC 6598 (100.64.0.0/10).

Examples

#![feature(ip)]
use std::net::Ipv4Addr;

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_benchmarking(&self) -> bool

🔬This is a nightly-only experimental API. (ip)

Returns true if this address part of the 198.18.0.0/15 range, which is reserved for network devices benchmarking.

This range is defined in IETF RFC 2544 as 192.18.0.0 through 198.19.255.255 but errata 423 corrects it to 198.18.0.0/15.

Examples

#![feature(ip)]
use std::net::Ipv4Addr;

assert_eq!(Ipv4Addr::new(198, 17, 255, 255).is_benchmarking(), false);
assert_eq!(Ipv4Addr::new(198, 18, 0, 0).is_benchmarking(), true);
assert_eq!(Ipv4Addr::new(198, 19, 255, 255).is_benchmarking(), true);
assert_eq!(Ipv4Addr::new(198, 20, 0, 0).is_benchmarking(), false);

pub fn is_reserved(&self) -> bool

🔬This is a nightly-only experimental API. (ip)

Returns true if this address is reserved by IANA for future use.

IETF RFC 1112 defines the block of reserved addresses as 240.0.0.0/4. This range normally includes the broadcast address 255.255.255.255, but this implementation explicitly excludes it, since it is obviously not reserved for future use.

Warning

As IANA assigns new addresses, this method will be updated. This may result in non-reserved addresses being treated as reserved in code that relies on an outdated version of this method.

Examples

#![feature(ip)]
use std::net::Ipv4Addr;

assert_eq!(Ipv4Addr::new(240, 0, 0, 0).is_reserved(), true);
assert_eq!(Ipv4Addr::new(255, 255, 255, 254).is_reserved(), true);

assert_eq!(Ipv4Addr::new(239, 255, 255, 255).is_reserved(), false);
// The broadcast address is not considered as reserved for future use by this implementation
assert_eq!(Ipv4Addr::new(255, 255, 255, 255).is_reserved(), false);

pub fn is_multicast(&self) -> bool

Returns true if this is a multicast address (224.0.0.0/4).

Multicast addresses have a most significant octet between 224 and 239, and is defined by IETF RFC 5771.

Examples

use std::net::Ipv4Addr;

assert_eq!(Ipv4Addr::new(224, 254, 0, 0).is_multicast(), true);
assert_eq!(Ipv4Addr::new(236, 168, 10, 65).is_multicast(), true);
assert_eq!(Ipv4Addr::new(172, 16, 10, 65).is_multicast(), false);

pub fn is_broadcast(&self) -> bool

Returns true if this is a broadcast address (255.255.255.255).

A broadcast address has all octets set to 255 as defined in IETF RFC 919.

Examples

use std::net::Ipv4Addr;

assert_eq!(Ipv4Addr::new(255, 255, 255, 255).is_broadcast(), true);
assert_eq!(Ipv4Addr::new(236, 168, 10, 65).is_broadcast(), false);

pub fn is_documentation(&self) -> bool

Returns true if this address is in a range designated for documentation.

This is defined in IETF RFC 5737:

• 192.0.2.0/24 (TEST-NET-1)
• 198.51.100.0/24 (TEST-NET-2)
• 203.0.113.0/24 (TEST-NET-3)

Examples

use std::net::Ipv4Addr;

assert_eq!(Ipv4Addr::new(192, 0, 2, 255).is_documentation(), true);
assert_eq!(Ipv4Addr::new(198, 51, 100, 65).is_documentation(), true);
assert_eq!(Ipv4Addr::new(203, 0, 113, 6).is_documentation(), true);
assert_eq!(Ipv4Addr::new(193, 34, 17, 19).is_documentation(), false);

pub fn to_ipv6_compatible(&self) -> Ipv6Addr

Converts this address to an IPv4-compatible IPv6 address.

a.b.c.d becomes ::a.b.c.d

Note that IPv4-compatible addresses have been officially deprecated. If you don’t explicitly need an IPv4-compatible address for legacy reasons, consider using to_ipv6_mapped instead.

Examples

use std::net::{Ipv4Addr, Ipv6Addr};

assert_eq!(
    Ipv4Addr::new(192, 0, 2, 255).to_ipv6_compatible(),
    Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0xc000, 0x2ff)
);

pub fn to_ipv6_mapped(&self) -> Ipv6Addr

Converts this address to an IPv4-mapped IPv6 address.

a.b.c.d becomes ::ffff:a.b.c.d

Examples

use std::net::{Ipv4Addr, Ipv6Addr};

assert_eq!(Ipv4Addr::new(192, 0, 2, 255).to_ipv6_mapped(),
           Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc000, 0x2ff));

Trait Implementations

impl Clone for Ipv4Addr

fn clone(&self) -> Ipv4Addr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Ipv4Addr

impl Debug for Ipv4Addr

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

Formats the value using the given formatter.

impl Deref for Ipv4Addr

type Target = Ipv4Addr

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'de> Deserialize<'de> for Ipv4Addr

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Ipv4Addr

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

Formats the value using the given formatter.

impl Eq for Ipv4Addr

impl From<Ipv4Addr> for Ipv4Addr

fn from(value: Ipv4Addr) -> Self

Converts to this type from the input type.

impl FromStr for Ipv4Addr

type Err = <Ipv4Addr as FromStr>::Err

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

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

impl Hash for Ipv4Addr

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

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 JsonSchema for Ipv4Addr

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

impl PartialEq for Ipv4Addr

fn eq(&self, other: &Ipv4Addr) -> 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 Serialize for Ipv4Addr

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Ipv4Addr

impl Validate for Ipv4Addr

fn validate<'a>(&self, _errors: ErrorCollector<'a>)

The default implementation of validate accepts all inputs.