pub trait SpecifiedAddress {
// Required method
fn is_specified(&self) -> bool;
}Expand description
Addresses that can be specified.
SpecifiedAddress is implemented by address types for which some values are
considered unspecified addresses. Unspecified addresses are usually not
legal to be used in actual network traffic, and are only meant to represent
the lack of any defined address. The exact meaning of the unspecified
address often varies by context. For example, the IPv4 address 0.0.0.0 and
the IPv6 address :: can be used, in the context of creating a listening
socket on systems that use the BSD sockets API, to listen on all local IP
addresses rather than a particular one.
Required Methods§
Sourcefn is_specified(&self) -> bool
fn is_specified(&self) -> bool
Is this a specified address?
is_specified must maintain the invariant that, if it is called twice
on the same object, and in between those two calls, no code has operated
on a mutable reference to that object, both calls will return the same
value. This property is required in order to implement
SpecifiedAddr. Note that, since this is not an unsafe trait,
unsafe code may NOT rely on this property for its soundness. However,
code MAY rely on this property for its correctness.