Struct libp2p_mdns::IPV4_MDNS_MULTICAST_ADDRESS

source · [−]

pub struct IPV4_MDNS_MULTICAST_ADDRESS { /* private fields */ }

Methods from Deref<Target = Ipv4Addr>

1.30.0 · source

pub const UNSPECIFIED: Ipv4Addr

1.30.0 · source

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

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

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.

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.

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

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.

pub fn is_global(&self) -> bool

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

Returns true if the address appears to be globally routable. See iana-ipv4-special-registry.

The following return false:

private addresses (see Ipv4Addr::is_private())
the loopback address (see Ipv4Addr::is_loopback())
the link-local address (see Ipv4Addr::is_link_local())
the broadcast address (see Ipv4Addr::is_broadcast())
addresses used for documentation (see Ipv4Addr::is_documentation())
the unspecified address (see Ipv4Addr::is_unspecified()), and the whole 0.0.0.0/8 block
addresses reserved for future protocols, except 192.0.0.9/32 and 192.0.0.10/32 which are globally routable
addresses reserved for future use (see Ipv4Addr::is_reserved()
addresses reserved for networking devices benchmarking (see Ipv4Addr::is_benchmarking())

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).

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);

source

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);

1.7.0 · source

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);

1.7.0 · source

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);

1.7.0 · source

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);

1.0.0 · source

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)
);

1.0.0 · source

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));