Enum `SocketAddr`

pub enum SocketAddr

An internet socket address, either IPv4 or IPv6.

Internet socket addresses consist of an IP address, a 16-bit port number, as well as possibly some version-dependent additional information. See SocketAddrV4's and SocketAddrV6's respective documentation for more details.

Portability

SocketAddr is intended to be a portable representation of socket addresses and is likely not the same as the internal socket address type used by the target operating system's API. Like all repr(Rust) structs, however, its exact layout remains undefined and should not be relied upon between builds.

Examples

use std::net::{IpAddr, Ipv4Addr, SocketAddr};

let socket = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);

assert_eq!("127.0.0.1:8080".parse(), Ok(socket));
assert_eq!(socket.port(), 8080);
assert_eq!(socket.is_ipv4(), true);

Variants

V4(SocketAddrV4): An IPv4 socket address.
V6(SocketAddrV6): An IPv6 socket address.

Implementations

`impl SocketAddr`

fn parse_ascii(b: &[u8]) -> Result<Self, AddrParseError>

Parse a socket address from a slice of bytes.

#![feature(addr_parse_ascii)]

use std::net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr};

let socket_v4 = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);
let socket_v6 = SocketAddr::new(IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1)), 8080);

assert_eq!(SocketAddr::parse_ascii(b"127.0.0.1:8080"), Ok(socket_v4));
assert_eq!(SocketAddr::parse_ascii(b"[::1]:8080"), Ok(socket_v6));

`impl SocketAddr`

const fn new(ip: IpAddr, port: u16) -> SocketAddr

Creates a new socket address from an IP address and a port number.

Examples

use std::net::{IpAddr, Ipv4Addr, SocketAddr};

let socket = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);
assert_eq!(socket.ip(), IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)));
assert_eq!(socket.port(), 8080);

const fn ip(&self) -> IpAddr

Returns the IP address associated with this socket address.

Examples

use std::net::{IpAddr, Ipv4Addr, SocketAddr};

let socket = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);
assert_eq!(socket.ip(), IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)));

const fn set_ip(&mut self, new_ip: IpAddr)

Changes the IP address associated with this socket address.

Examples

use std::net::{IpAddr, Ipv4Addr, SocketAddr};

let mut socket = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);
socket.set_ip(IpAddr::V4(Ipv4Addr::new(10, 10, 0, 1)));
assert_eq!(socket.ip(), IpAddr::V4(Ipv4Addr::new(10, 10, 0, 1)));

const fn port(&self) -> u16

Returns the port number associated with this socket address.

Examples

use std::net::{IpAddr, Ipv4Addr, SocketAddr};

let socket = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);
assert_eq!(socket.port(), 8080);

const fn set_port(&mut self, new_port: u16)

Changes the port number associated with this socket address.

Examples

use std::net::{IpAddr, Ipv4Addr, SocketAddr};

let mut socket = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);
socket.set_port(1025);
assert_eq!(socket.port(), 1025);

const fn is_ipv4(&self) -> bool

Returns true if the IP address in this SocketAddr is an IPv4 address, and false otherwise.

Examples

use std::net::{IpAddr, Ipv4Addr, SocketAddr};

let socket = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);
assert_eq!(socket.is_ipv4(), true);
assert_eq!(socket.is_ipv6(), false);

const fn is_ipv6(&self) -> bool

Returns true if the IP address in this SocketAddr is an IPv6 address, and false otherwise.

Examples

use std::net::{IpAddr, Ipv6Addr, SocketAddr};

let socket = SocketAddr::new(IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 65535, 0, 1)), 8080);
assert_eq!(socket.is_ipv4(), false);
assert_eq!(socket.is_ipv6(), true);

const fn unspecified_from(this: Self) -> Self

Returns the unspecified socket address for the same IP version.

Returns 0.0.0.0:0 for IPv4 and [::]:0 for IPv6. For IPv6, this method preserves the flow information and scope ID.

Use this method when you must bind a socket to an unspecified local address that uses the same IP version as a remote address.

Examples

#![feature(addr_unspecified_from)]
use std::net::{SocketAddr, SocketAddrV4, SocketAddrV6, Ipv4Addr, Ipv6Addr};

let addr = SocketAddr::V4(SocketAddrV4::new(Ipv4Addr::new(127, 0, 0, 1), 3000));
assert_eq!(
    SocketAddr::unspecified_from(addr),
    SocketAddr::V4(SocketAddrV4::new(Ipv4Addr::UNSPECIFIED, 0))
);

let addr = SocketAddr::V6(SocketAddrV6::new(
    Ipv6Addr::new(0x2001, 0xdb8, 0, 0, 0, 0, 0, 1),
    443,
    0x1234,
    5,
));

let unspecified = SocketAddr::unspecified_from(addr);
assert_eq!(unspecified.ip(), Ipv6Addr::UNSPECIFIED);
if let SocketAddr::V6(v6) = unspecified {
    assert_eq!(v6.flowinfo(), 0x1234);
    assert_eq!(v6.scope_id(), 5);
}