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use std::fmt;
use std::net::{AddrParseError, Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6};
use std::str::FromStr;
#[derive(Copy, Clone, Eq, PartialEq, Debug, Hash, PartialOrd, Ord)]
pub enum IpAddr {
V4(Ipv4Addr),
V6(Ipv6Addr),
}
impl fmt::Display for IpAddr {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
match *self {
IpAddr::V4(ref a) => a.fmt(fmt),
IpAddr::V6(ref a) => a.fmt(fmt),
}
}
}
impl FromStr for IpAddr {
type Err = AddrParseError;
fn from_str(s: &str) -> Result<IpAddr, AddrParseError> {
Ipv4Addr::from_str(s).map(|v4| IpAddr::V4(v4))
.or_else(|_| {
Ipv6Addr::from_str(s).map(|v6| IpAddr::V6(v6))
})
}
}
pub trait SocketAddrExt {
fn new(ip: IpAddr, port: u16) -> SocketAddr;
fn ip(&self) -> IpAddr;
}
impl SocketAddrExt for SocketAddr {
fn new(ip: IpAddr, port: u16) -> SocketAddr {
match ip {
IpAddr::V4(ipv4_addr) => SocketAddr::V4(SocketAddrV4::new(ipv4_addr, port)),
IpAddr::V6(ipv6_addr) => SocketAddr::V6(SocketAddrV6::new(ipv6_addr, port, 0, 0)),
}
}
fn ip(&self) -> IpAddr {
match *self {
SocketAddr::V4(socket_addr_v4) => IpAddr::V4(*socket_addr_v4.ip()),
SocketAddr::V6(socket_addr_v6) => IpAddr::V6(*socket_addr_v6.ip()),
}
}
}
#[test]
fn display_ipv4() {
let ipv4 = Ipv4Addr::new(192, 168, 0, 1);
let ip = IpAddr::V4(ipv4);
assert_eq!(format!("{}", ip), format!("{}", ipv4));
}
#[test]
fn display_ipv6() {
let ipv6 = Ipv6Addr::new(0x2001, 0x0db8, 0, 0, 0, 0, 0, 1);
let ip = IpAddr::V6(ipv6);
assert_eq!(format!("{}", ip), format!("{}", ipv6));
}
#[test]
fn parse_ipv4() {
let ipv4 = Ipv4Addr::from_str("192.168.0.1").unwrap();
let ip = IpAddr::from_str("192.168.0.1").unwrap();
assert_eq!(IpAddr::V4(ipv4), ip);
}
#[test]
fn parse_ipv6() {
let ipv6 = Ipv6Addr::from_str("2001:0db8::0001").unwrap();
let ip = IpAddr::from_str("2001:0db8::0001").unwrap();
assert_eq!(IpAddr::V6(ipv6), ip);
}
#[test]
fn parse_fails() {
let error = IpAddr::from_str("nonsense");
assert!(error.is_err());
}
#[test]
fn to_from_socket_addr() {
let set_ip = IpAddr::V4(Ipv4Addr::new(192, 168, 0, 1));
let set_port = 45666;
let socket_addr = <SocketAddr as SocketAddrExt>::new(set_ip, set_port);
let get_ip = <SocketAddr as SocketAddrExt>::ip(&socket_addr);
let get_port = socket_addr.port();
assert_eq!(set_ip, get_ip);
assert_eq!(set_port, get_port);
}