Struct no_std_net::Ipv4Addr [−][src]
pub struct Ipv4Addr { /* fields omitted */ }
Expand description
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.
Textual representation
Ipv4Addr
provides a FromStr
implementation. The four octets are in decimal
notation, divided by .
(this is called “dot-decimal notation”).
Notably, octal numbers and hexadecimal numbers are not allowed per IETF RFC 6943.
Examples
use no_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);
Implementations
Creates a new IPv4 address from four eight-bit octets.
The result will represent the IP address a
.b
.c
.d
.
Examples
use no_std_net::Ipv4Addr;
let addr = Ipv4Addr::new(127, 0, 0, 1);
An IPv4 address with the address pointing to localhost: 127.0.0.1
Examples
use no_std_net::Ipv4Addr;
let addr = Ipv4Addr::LOCALHOST;
assert_eq!(addr, Ipv4Addr::new(127, 0, 0, 1));
An IPv4 address representing an unspecified address: 0.0.0.0
This corresponds to the constant INADDR_ANY
in other languages.
Examples
use no_std_net::Ipv4Addr;
let addr = Ipv4Addr::UNSPECIFIED;
assert_eq!(addr, Ipv4Addr::new(0, 0, 0, 0));
An IPv4 address representing the broadcast address: 255.255.255.255
Examples
use no_std_net::Ipv4Addr;
let addr = Ipv4Addr::BROADCAST;
assert_eq!(addr, Ipv4Addr::new(255, 255, 255, 255));
Returns the four eight-bit integers that make up this address.
Examples
use no_std_net::Ipv4Addr;
let addr = Ipv4Addr::new(127, 0, 0, 1);
assert_eq!(addr.octets(), [127, 0, 0, 1]);
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 no_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);
Returns true
if this is a loopback address (127.0.0.0/8
).
This property is defined by IETF RFC 1122.
Examples
use no_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);
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 no_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);
Returns true
if the address is link-local (169.254.0.0/16
).
This property is defined by IETF RFC 3927.
Examples
use no_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);
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 no_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);
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 no_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);
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 no_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);
Converts this address to an IPv4-compatible IPv6
address.
a.b.c.d
becomes ::a.b.c.d
This isn’t typically the method you want; these addresses don’t typically
function on modern systems. Use to_ipv6_mapped
instead.
Examples
use no_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)
);
Converts this address to an IPv4-mapped IPv6
address.
a.b.c.d
becomes ::ffff:a.b.c.d
Examples
use no_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
This method returns an ordering between self
and other
values if one exists. Read more
This method tests less than (for self
and other
) and is used by the <
operator. Read more
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
This method returns an ordering between self
and other
values if one exists. Read more
This method tests less than (for self
and other
) and is used by the <
operator. Read more
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
This method returns an ordering between self
and other
values if one exists. Read more
This method tests less than (for self
and other
) and is used by the <
operator. Read more
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
This method tests greater than (for self
and other
) and is used by the >
operator. Read more