pub struct Ipv4Addr { /* fields omitted */ }
An IPv4 address.
IPv4 addresses are defined as 32-bit integers in IETF RFC 791. They are usually represented as four octets.
See IpAddr for a type encompassing both IPv4 and IPv6 addresses.
Ipv4Addr provides a FromStr implementation. The four octets are in decimal notation, divided by . (this is called "dot-decimal notation").
use std::net::Ipv4Addr;
let localhost = Ipv4Addr::new(127, 0, 0, 1);
assert_eq!("127.0.0.1".parse(), Ok(localhost));
assert_eq!(localhost.is_loopback(), true); impl Ipv4Addr
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pub fn new(a: u8, b: u8, c: u8, d: u8) -> Ipv4Addr
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Creates a new IPv4 address from four eight-bit octets.
The result will represent the IP address a.b.c.d.
use std::net::Ipv4Addr; let addr = Ipv4Addr::new(127, 0, 0, 1);
pub fn localhost() -> Ipv4Addr
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Creates a new IPv4 address with the address pointing to localhost: 127.0.0.1.
#![feature(ip_constructors)] use std::net::Ipv4Addr; let addr = Ipv4Addr::localhost(); assert_eq!(addr, Ipv4Addr::new(127, 0, 0, 1));
pub fn unspecified() -> Ipv4Addr
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Creates a new IPv4 address representing an unspecified address: 0.0.0.0
#![feature(ip_constructors)] use std::net::Ipv4Addr; let addr = Ipv4Addr::unspecified(); assert_eq!(addr, Ipv4Addr::new(0, 0, 0, 0));
pub fn octets(&self) -> [u8; 4]
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Returns the four eight-bit integers that make up this address.
use std::net::Ipv4Addr; let addr = Ipv4Addr::new(127, 0, 0, 1); assert_eq!(addr.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.
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.
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:
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.
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
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Returns true if the address appears to be globally routable. See iana-ipv4-special-registry.
The following return false:
#![feature(ip)]
use std::net::Ipv4Addr;
fn main() {
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);
assert_eq!(Ipv4Addr::new(0, 0, 0, 0).is_global(), false);
assert_eq!(Ipv4Addr::new(80, 9, 12, 3).is_global(), true);
} 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.
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.
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:
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
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Converts this address to an IPv4-compatible IPv6 address.
a.b.c.d becomes ::a.b.c.d
use std::net::{Ipv4Addr, Ipv6Addr};
assert_eq!(Ipv4Addr::new(192, 0, 2, 255).to_ipv6_compatible(),
Ipv6Addr::new(0, 0, 0, 0, 0, 0, 49152, 767)); pub fn to_ipv6_mapped(&self) -> Ipv6Addr
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Converts this address to an IPv4-mapped IPv6 address.
a.b.c.d becomes ::ffff:a.b.c.d
use std::net::{Ipv4Addr, Ipv6Addr};
assert_eq!(Ipv4Addr::new(192, 0, 2, 255).to_ipv6_mapped(),
Ipv6Addr::new(0, 0, 0, 0, 0, 65535, 49152, 767)); impl Copy for Ipv4Addr
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impl From<Ipv4Addr> for IpAddr
fn from(ipv4: Ipv4Addr) -> IpAddr
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Performs the conversion.
impl Display for Ipv4Addr
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fn fmt(&self, fmt: &mut Formatter) -> Result
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Formats the value using the given formatter. Read more
impl Debug for Ipv4Addr
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fn fmt(&self, fmt: &mut Formatter) -> Result
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Formats the value using the given formatter. Read more
impl Clone for Ipv4Addr
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fn clone(&self) -> Ipv4Addr
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Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source. Read more
impl PartialEq for Ipv4Addr
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fn eq(&self, other: &Ipv4Addr) -> bool
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This method tests for self and other values to be equal, and is used by ==. Read more
fn ne(&self, other: &Rhs) -> bool
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This method tests for !=.
impl PartialEq<Ipv4Addr> for IpAddr
fn eq(&self, other: &Ipv4Addr) -> bool
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This method tests for self and other values to be equal, and is used by ==. Read more
fn ne(&self, other: &Rhs) -> bool
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This method tests for !=.
impl PartialEq<IpAddr> for Ipv4Addr
fn eq(&self, other: &IpAddr) -> bool
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This method tests for self and other values to be equal, and is used by ==. Read more
fn ne(&self, other: &Rhs) -> bool
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This method tests for !=.
impl Eq for Ipv4Addr
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impl Hash for Ipv4Addr
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fn hash<H:Â Hasher>(&self, s: &mut H)
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Feeds this value into the given [Hasher]. Read more
fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher,Â
Feeds a slice of this type into the given [Hasher]. Read more
impl PartialOrd for Ipv4Addr
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fn partial_cmp(&self, other: &Ipv4Addr) -> Option<Ordering>
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This method returns an ordering between self and other values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
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This method tests less than (for self and other) and is used by the < operator. Read more
fn le(&self, other: &Rhs) -> bool
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This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
fn gt(&self, other: &Rhs) -> bool
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This method tests greater than (for self and other) and is used by the > operator. Read more
fn ge(&self, other: &Rhs) -> bool
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This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
impl PartialOrd<Ipv4Addr> for IpAddr
fn partial_cmp(&self, other: &Ipv4Addr) -> Option<Ordering>
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This method returns an ordering between self and other values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
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This method tests less than (for self and other) and is used by the < operator. Read more
fn le(&self, other: &Rhs) -> bool
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This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
fn gt(&self, other: &Rhs) -> bool
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This method tests greater than (for self and other) and is used by the > operator. Read more
fn ge(&self, other: &Rhs) -> bool
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This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
impl PartialOrd<IpAddr> for Ipv4Addr
fn partial_cmp(&self, other: &IpAddr) -> Option<Ordering>
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This method returns an ordering between self and other values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
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This method tests less than (for self and other) and is used by the < operator. Read more
fn le(&self, other: &Rhs) -> bool
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This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
fn gt(&self, other: &Rhs) -> bool
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This method tests greater than (for self and other) and is used by the > operator. Read more
fn ge(&self, other: &Rhs) -> bool
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This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
impl Ord for Ipv4Addr
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fn cmp(&self, other: &Ipv4Addr) -> Ordering
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This method returns an Ordering between self and other. Read more
fn max(self, other: Self) -> Self
Compares and returns the maximum of two values. Read more
fn min(self, other: Self) -> Self
Compares and returns the minimum of two values. Read more
impl From<Ipv4Addr> for u32
fn from(ip: Ipv4Addr) -> u32
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It performs the conversion in network order (big-endian).
impl From<u32> for Ipv4Addr
fn from(ip: u32) -> Ipv4Addr
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It performs the conversion in network order (big-endian).
impl From<[u8; 4]> for Ipv4Addr
fn from(octets: [u8; 4]) -> Ipv4Addr
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Performs the conversion.
impl FromStr for Ipv4Addr
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type Err = AddrParseErrorThe associated error which can be returned from parsing.
fn from_str(s: &str) -> Result<Ipv4Addr, AddrParseError>
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Parses a string s to return a value of this type. Read more
© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/net/struct.Ipv4Addr.html