Struct crusty_core::config::CIP6Addr [−][src]
pub struct CIP6Addr(pub Ipv6Addr);
Methods from Deref<Target = Ipv6Addr>
Returns the eight 16-bit segments that make up this address.
Examples
use std::net::Ipv6Addr; assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).segments(), [0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff]);
Returns true
for the special ‘unspecified’ address (::).
This property is defined in IETF RFC 4291.
Examples
use std::net::Ipv6Addr; assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).is_unspecified(), false); assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0).is_unspecified(), true);
Returns true
if this is a loopback address (::1).
This property is defined in IETF RFC 4291.
Examples
use std::net::Ipv6Addr; assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).is_loopback(), false); assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0x1).is_loopback(), true);
🔬 This is a nightly-only experimental API. (ip
)
ip
)Returns true
if the address appears to be globally routable.
The following return false
:
- the loopback address
- link-local and unique local unicast addresses
- interface-, link-, realm-, admin- and site-local multicast addresses
Examples
#![feature(ip)] use std::net::Ipv6Addr; assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).is_global(), true); assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0x1).is_global(), false); assert_eq!(Ipv6Addr::new(0, 0, 0x1c9, 0, 0, 0xafc8, 0, 0x1).is_global(), true);
🔬 This is a nightly-only experimental API. (ip
)
ip
)Returns true
if this is a unique local address (fc00::/7
).
This property is defined in IETF RFC 4193.
Examples
#![feature(ip)] use std::net::Ipv6Addr; assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).is_unique_local(), false); assert_eq!(Ipv6Addr::new(0xfc02, 0, 0, 0, 0, 0, 0, 0).is_unique_local(), true);
🔬 This is a nightly-only experimental API. (ip
)
ip
)Returns true
if the address is a unicast address with link-local scope,
as defined in RFC 4291.
A unicast address has link-local scope if it has the prefix fe80::/10
, as per RFC 4291 section 2.4.
Note that this encompasses more addresses than those defined in RFC 4291 section 2.5.6,
which describes “Link-Local IPv6 Unicast Addresses” as having the following stricter format:
| 10 bits | 54 bits | 64 bits |
+----------+-------------------------+----------------------------+
|1111111010| 0 | interface ID |
+----------+-------------------------+----------------------------+
So while currently the only addresses with link-local scope an application will encounter are all in fe80::/64
,
this might change in the future with the publication of new standards. More addresses in fe80::/10
could be allocated,
and those addresses will have link-local scope.
Also note that while RFC 4291 section 2.5.3 mentions about the loopback address (::1
) that “it is treated as having Link-Local scope”,
this does not mean that the loopback address actually has link-local scope and this method will return false
on it.
Examples
#![feature(ip)] use std::net::Ipv6Addr; // The loopback address (`::1`) does not actually have link-local scope. assert_eq!(Ipv6Addr::LOCALHOST.is_unicast_link_local(), false); // Only addresses in `fe80::/10` have link-local scope. assert_eq!(Ipv6Addr::new(0x2001, 0xdb8, 0, 0, 0, 0, 0, 0).is_unicast_link_local(), false); assert_eq!(Ipv6Addr::new(0xfe80, 0, 0, 0, 0, 0, 0, 0).is_unicast_link_local(), true); // Addresses outside the stricter `fe80::/64` also have link-local scope. assert_eq!(Ipv6Addr::new(0xfe80, 0, 0, 1, 0, 0, 0, 0).is_unicast_link_local(), true); assert_eq!(Ipv6Addr::new(0xfe81, 0, 0, 0, 0, 0, 0, 0).is_unicast_link_local(), true);
🔬 This is a nightly-only experimental API. (ip
)
ip
)Returns true
if this is a deprecated unicast site-local address (fec0::/10). The
unicast site-local address format is defined in RFC 4291 section 2.5.7 as:
| 10 |
| bits | 54 bits | 64 bits |
+----------+-------------------------+----------------------------+
|1111111011| subnet ID | interface ID |
+----------+-------------------------+----------------------------+
Examples
#![feature(ip)] use std::net::Ipv6Addr; assert_eq!( Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).is_unicast_site_local(), false ); assert_eq!(Ipv6Addr::new(0xfec2, 0, 0, 0, 0, 0, 0, 0).is_unicast_site_local(), true);
Warning
As per RFC 3879, the whole FEC0::/10
prefix is
deprecated. New software must not support site-local
addresses.
🔬 This is a nightly-only experimental API. (ip
)
ip
)Returns true
if this is an address reserved for documentation
(2001:db8::/32
).
This property is defined in IETF RFC 3849.
Examples
#![feature(ip)] use std::net::Ipv6Addr; assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).is_documentation(), false); assert_eq!(Ipv6Addr::new(0x2001, 0xdb8, 0, 0, 0, 0, 0, 0).is_documentation(), true);
🔬 This is a nightly-only experimental API. (ip
)
ip
)Returns true
if the address is a globally routable unicast address.
The following return false:
- the loopback address
- the link-local addresses
- unique local addresses
- the unspecified address
- the address range reserved for documentation
This method returns true
for site-local addresses as per RFC 4291 section 2.5.7
The special behavior of [the site-local unicast] prefix defined in [RFC3513] must no longer
be supported in new implementations (i.e., new implementations must treat this prefix as
Global Unicast).
Examples
#![feature(ip)] use std::net::Ipv6Addr; assert_eq!(Ipv6Addr::new(0x2001, 0xdb8, 0, 0, 0, 0, 0, 0).is_unicast_global(), false); assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).is_unicast_global(), true);
🔬 This is a nightly-only experimental API. (ip
)
ip
)Returns the address’s multicast scope if the address is multicast.
Examples
#![feature(ip)] use std::net::{Ipv6Addr, Ipv6MulticastScope}; assert_eq!( Ipv6Addr::new(0xff0e, 0, 0, 0, 0, 0, 0, 0).multicast_scope(), Some(Ipv6MulticastScope::Global) ); assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).multicast_scope(), None);
Returns true
if this is a multicast address (ff00::/8).
This property is defined by IETF RFC 4291.
Examples
use std::net::Ipv6Addr; assert_eq!(Ipv6Addr::new(0xff00, 0, 0, 0, 0, 0, 0, 0).is_multicast(), true); assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).is_multicast(), false);
🔬 This is a nightly-only experimental API. (ip
)
ip
)Converts this address to an IPv4
address if it’s an “IPv4-mapped IPv6 address”
defined in IETF RFC 4291 section 2.5.5.2, otherwise returns None
.
::ffff:a.b.c.d
becomes a.b.c.d
.
All addresses not starting with ::ffff
will return None
.
Examples
#![feature(ip)] use std::net::{Ipv4Addr, Ipv6Addr}; assert_eq!(Ipv6Addr::new(0xff00, 0, 0, 0, 0, 0, 0, 0).to_ipv4_mapped(), None); assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).to_ipv4_mapped(), Some(Ipv4Addr::new(192, 10, 2, 255))); assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1).to_ipv4_mapped(), None);
Converts this address to an IPv4
address. Returns None
if this address is
neither IPv4-compatible or IPv4-mapped.
::a.b.c.d and ::ffff:a.b.c.d become a.b.c.d
Examples
use std::net::{Ipv4Addr, Ipv6Addr}; assert_eq!(Ipv6Addr::new(0xff00, 0, 0, 0, 0, 0, 0, 0).to_ipv4(), None); assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0xffff, 0xc00a, 0x2ff).to_ipv4(), Some(Ipv4Addr::new(192, 10, 2, 255))); assert_eq!(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1).to_ipv4(), Some(Ipv4Addr::new(0, 0, 0, 1)));
Trait Implementations
Auto Trait Implementations
impl RefUnwindSafe for CIP6Addr
impl UnwindSafe for CIP6Addr
Blanket Implementations
Mutably borrows from an owned value. Read more
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