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+use crate::cmp::Ordering;
+use crate::convert::TryInto;
+use crate::fmt;
+use crate::hash;
+use crate::io::{self, Write};
+use crate::iter;
+use crate::mem;
+use crate::net::{htons, ntohs, IpAddr, Ipv4Addr, Ipv6Addr};
+use crate::option;
+use crate::slice;
+use crate::sys::net::netc as c;
+use crate::sys_common::net::LookupHost;
+use crate::sys_common::{AsInner, FromInner, IntoInner};
+use crate::vec;
+
+/// 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.
+///
+/// The size of a `SocketAddr` instance may vary depending on the target operating
+/// system.
+///
+/// [IP address]: ../../std/net/enum.IpAddr.html
+/// [`SocketAddrV4`]: ../../std/net/struct.SocketAddrV4.html
+/// [`SocketAddrV6`]: ../../std/net/struct.SocketAddrV6.html
+///
+/// # 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);
+/// ```
+#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug, PartialOrd, Ord)]
+#[stable(feature = "rust1", since = "1.0.0")]
+pub enum SocketAddr {
+ /// An IPv4 socket address.
+ #[stable(feature = "rust1", since = "1.0.0")]
+ V4(#[stable(feature = "rust1", since = "1.0.0")] SocketAddrV4),
+ /// An IPv6 socket address.
+ #[stable(feature = "rust1", since = "1.0.0")]
+ V6(#[stable(feature = "rust1", since = "1.0.0")] SocketAddrV6),
+}
+
+/// An IPv4 socket address.
+///
+/// IPv4 socket addresses consist of an [IPv4 address] and a 16-bit port number, as
+/// stated in [IETF RFC 793].
+///
+/// See [`SocketAddr`] for a type encompassing both IPv4 and IPv6 socket addresses.
+///
+/// The size of a `SocketAddrV4` struct may vary depending on the target operating
+/// system.
+///
+/// [IETF RFC 793]: https://tools.ietf.org/html/rfc793
+/// [IPv4 address]: ../../std/net/struct.Ipv4Addr.html
+/// [`SocketAddr`]: ../../std/net/enum.SocketAddr.html
+///
+/// # Examples
+///
+/// ```
+/// use std::net::{Ipv4Addr, SocketAddrV4};
+///
+/// let socket = SocketAddrV4::new(Ipv4Addr::new(127, 0, 0, 1), 8080);
+///
+/// assert_eq!("127.0.0.1:8080".parse(), Ok(socket));
+/// assert_eq!(socket.ip(), &Ipv4Addr::new(127, 0, 0, 1));
+/// assert_eq!(socket.port(), 8080);
+/// ```
+#[derive(Copy)]
+#[stable(feature = "rust1", since = "1.0.0")]
+pub struct SocketAddrV4 {
+ inner: c::sockaddr_in,
+}
+
+/// An IPv6 socket address.
+///
+/// IPv6 socket addresses consist of an [Ipv6 address], a 16-bit port number, as well
+/// as fields containing the traffic class, the flow label, and a scope identifier
+/// (see [IETF RFC 2553, Section 3.3] for more details).
+///
+/// See [`SocketAddr`] for a type encompassing both IPv4 and IPv6 socket addresses.
+///
+/// The size of a `SocketAddrV6` struct may vary depending on the target operating
+/// system.
+///
+/// [IETF RFC 2553, Section 3.3]: https://tools.ietf.org/html/rfc2553#section-3.3
+/// [IPv6 address]: ../../std/net/struct.Ipv6Addr.html
+/// [`SocketAddr`]: ../../std/net/enum.SocketAddr.html
+///
+/// # Examples
+///
+/// ```
+/// use std::net::{Ipv6Addr, SocketAddrV6};
+///
+/// let socket = SocketAddrV6::new(Ipv6Addr::new(0x2001, 0xdb8, 0, 0, 0, 0, 0, 1), 8080, 0, 0);
+///
+/// assert_eq!("[2001:db8::1]:8080".parse(), Ok(socket));
+/// assert_eq!(socket.ip(), &Ipv6Addr::new(0x2001, 0xdb8, 0, 0, 0, 0, 0, 1));
+/// assert_eq!(socket.port(), 8080);
+/// ```
+#[derive(Copy)]
+#[stable(feature = "rust1", since = "1.0.0")]
+pub struct SocketAddrV6 {
+ inner: c::sockaddr_in6,
+}
+
+impl SocketAddr {
+ /// Creates a new socket address from an [IP address] and a port number.
+ ///
+ /// [IP address]: ../../std/net/enum.IpAddr.html
+ ///
+ /// # 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);
+ /// ```
+ #[stable(feature = "ip_addr", since = "1.7.0")]
+ pub fn new(ip: IpAddr, port: u16) -> SocketAddr {
+ match ip {
+ IpAddr::V4(a) => SocketAddr::V4(SocketAddrV4::new(a, port)),
+ IpAddr::V6(a) => SocketAddr::V6(SocketAddrV6::new(a, port, 0, 0)),
+ }
+ }
+
+ /// 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)));
+ /// ```
+ #[stable(feature = "ip_addr", since = "1.7.0")]
+ pub fn ip(&self) -> IpAddr {
+ match *self {
+ SocketAddr::V4(ref a) => IpAddr::V4(*a.ip()),
+ SocketAddr::V6(ref a) => IpAddr::V6(*a.ip()),
+ }
+ }
+
+ /// 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)));
+ /// ```
+ #[stable(feature = "sockaddr_setters", since = "1.9.0")]
+ pub fn set_ip(&mut self, new_ip: IpAddr) {
+ // `match (*self, new_ip)` would have us mutate a copy of self only to throw it away.
+ match (self, new_ip) {
+ (&mut SocketAddr::V4(ref mut a), IpAddr::V4(new_ip)) => a.set_ip(new_ip),
+ (&mut SocketAddr::V6(ref mut a), IpAddr::V6(new_ip)) => a.set_ip(new_ip),
+ (self_, new_ip) => *self_ = Self::new(new_ip, self_.port()),
+ }
+ }
+
+ /// 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);
+ /// ```
+ #[stable(feature = "rust1", since = "1.0.0")]
+ pub fn port(&self) -> u16 {
+ match *self {
+ SocketAddr::V4(ref a) => a.port(),
+ SocketAddr::V6(ref a) => a.port(),
+ }
+ }
+
+ /// 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);
+ /// ```
+ #[stable(feature = "sockaddr_setters", since = "1.9.0")]
+ pub fn set_port(&mut self, new_port: u16) {
+ match *self {
+ SocketAddr::V4(ref mut a) => a.set_port(new_port),
+ SocketAddr::V6(ref mut a) => a.set_port(new_port),
+ }
+ }
+
+ /// Returns [`true`] if the [IP address] in this `SocketAddr` is an
+ /// [IPv4 address], and [`false`] otherwise.
+ ///
+ /// [`true`]: ../../std/primitive.bool.html
+ /// [`false`]: ../../std/primitive.bool.html
+ /// [IP address]: ../../std/net/enum.IpAddr.html
+ /// [IPv4 address]: ../../std/net/enum.IpAddr.html#variant.V4
+ ///
+ /// # 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);
+ /// ```
+ #[stable(feature = "sockaddr_checker", since = "1.16.0")]
+ pub fn is_ipv4(&self) -> bool {
+ matches!(*self, SocketAddr::V4(_))
+ }
+
+ /// Returns [`true`] if the [IP address] in this `SocketAddr` is an
+ /// [IPv6 address], and [`false`] otherwise.
+ ///
+ /// [`true`]: ../../std/primitive.bool.html
+ /// [`false`]: ../../std/primitive.bool.html
+ /// [IP address]: ../../std/net/enum.IpAddr.html
+ /// [IPv6 address]: ../../std/net/enum.IpAddr.html#variant.V6
+ ///
+ /// # 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);
+ /// ```
+ #[stable(feature = "sockaddr_checker", since = "1.16.0")]
+ pub fn is_ipv6(&self) -> bool {
+ matches!(*self, SocketAddr::V6(_))
+ }
+}
+
+impl SocketAddrV4 {
+ /// Creates a new socket address from an [IPv4 address] and a port number.
+ ///
+ /// [IPv4 address]: ../../std/net/struct.Ipv4Addr.html
+ ///
+ /// # Examples
+ ///
+ /// ```
+ /// use std::net::{SocketAddrV4, Ipv4Addr};
+ ///
+ /// let socket = SocketAddrV4::new(Ipv4Addr::new(127, 0, 0, 1), 8080);
+ /// ```
+ #[stable(feature = "rust1", since = "1.0.0")]
+ pub fn new(ip: Ipv4Addr, port: u16) -> SocketAddrV4 {
+ SocketAddrV4 {
+ inner: c::sockaddr_in {
+ sin_family: c::AF_INET as c::sa_family_t,
+ sin_port: htons(port),
+ sin_addr: *ip.as_inner(),
+ ..unsafe { mem::zeroed() }
+ },
+ }
+ }
+
+ /// Returns the IP address associated with this socket address.
+ ///
+ /// # Examples
+ ///
+ /// ```
+ /// use std::net::{SocketAddrV4, Ipv4Addr};
+ ///
+ /// let socket = SocketAddrV4::new(Ipv4Addr::new(127, 0, 0, 1), 8080);
+ /// assert_eq!(socket.ip(), &Ipv4Addr::new(127, 0, 0, 1));
+ /// ```
+ #[stable(feature = "rust1", since = "1.0.0")]
+ pub fn ip(&self) -> &Ipv4Addr {
+ unsafe { &*(&self.inner.sin_addr as *const c::in_addr as *const Ipv4Addr) }
+ }
+
+ /// Changes the IP address associated with this socket address.
+ ///
+ /// # Examples
+ ///
+ /// ```
+ /// use std::net::{SocketAddrV4, Ipv4Addr};
+ ///
+ /// let mut socket = SocketAddrV4::new(Ipv4Addr::new(127, 0, 0, 1), 8080);
+ /// socket.set_ip(Ipv4Addr::new(192, 168, 0, 1));
+ /// assert_eq!(socket.ip(), &Ipv4Addr::new(192, 168, 0, 1));
+ /// ```
+ #[stable(feature = "sockaddr_setters", since = "1.9.0")]
+ pub fn set_ip(&mut self, new_ip: Ipv4Addr) {
+ self.inner.sin_addr = *new_ip.as_inner()
+ }
+
+ /// Returns the port number associated with this socket address.
+ ///
+ /// # Examples
+ ///
+ /// ```
+ /// use std::net::{SocketAddrV4, Ipv4Addr};
+ ///
+ /// let socket = SocketAddrV4::new(Ipv4Addr::new(127, 0, 0, 1), 8080);
+ /// assert_eq!(socket.port(), 8080);
+ /// ```
+ #[stable(feature = "rust1", since = "1.0.0")]
+ pub fn port(&self) -> u16 {
+ ntohs(self.inner.sin_port)
+ }
+
+ /// Changes the port number associated with this socket address.
+ ///
+ /// # Examples
+ ///
+ /// ```
+ /// use std::net::{SocketAddrV4, Ipv4Addr};
+ ///
+ /// let mut socket = SocketAddrV4::new(Ipv4Addr::new(127, 0, 0, 1), 8080);
+ /// socket.set_port(4242);
+ /// assert_eq!(socket.port(), 4242);
+ /// ```
+ #[stable(feature = "sockaddr_setters", since = "1.9.0")]
+ pub fn set_port(&mut self, new_port: u16) {
+ self.inner.sin_port = htons(new_port);
+ }
+}
+
+impl SocketAddrV6 {
+ /// Creates a new socket address from an [IPv6 address], a 16-bit port number,
+ /// and the `flowinfo` and `scope_id` fields.
+ ///
+ /// For more information on the meaning and layout of the `flowinfo` and `scope_id`
+ /// parameters, see [IETF RFC 2553, Section 3.3].
+ ///
+ /// [IETF RFC 2553, Section 3.3]: https://tools.ietf.org/html/rfc2553#section-3.3
+ /// [IPv6 address]: ../../std/net/struct.Ipv6Addr.html
+ ///
+ /// # Examples
+ ///
+ /// ```
+ /// use std::net::{SocketAddrV6, Ipv6Addr};
+ ///
+ /// let socket = SocketAddrV6::new(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1), 8080, 0, 0);
+ /// ```
+ #[stable(feature = "rust1", since = "1.0.0")]
+ pub fn new(ip: Ipv6Addr, port: u16, flowinfo: u32, scope_id: u32) -> SocketAddrV6 {
+ SocketAddrV6 {
+ inner: c::sockaddr_in6 {
+ sin6_family: c::AF_INET6 as c::sa_family_t,
+ sin6_port: htons(port),
+ sin6_addr: *ip.as_inner(),
+ sin6_flowinfo: flowinfo,
+ sin6_scope_id: scope_id,
+ ..unsafe { mem::zeroed() }
+ },
+ }
+ }
+
+ /// Returns the IP address associated with this socket address.
+ ///
+ /// # Examples
+ ///
+ /// ```
+ /// use std::net::{SocketAddrV6, Ipv6Addr};
+ ///
+ /// let socket = SocketAddrV6::new(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1), 8080, 0, 0);
+ /// assert_eq!(socket.ip(), &Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1));
+ /// ```
+ #[stable(feature = "rust1", since = "1.0.0")]
+ pub fn ip(&self) -> &Ipv6Addr {
+ unsafe { &*(&self.inner.sin6_addr as *const c::in6_addr as *const Ipv6Addr) }
+ }
+
+ /// Changes the IP address associated with this socket address.
+ ///
+ /// # Examples
+ ///
+ /// ```
+ /// use std::net::{SocketAddrV6, Ipv6Addr};
+ ///
+ /// let mut socket = SocketAddrV6::new(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1), 8080, 0, 0);
+ /// socket.set_ip(Ipv6Addr::new(76, 45, 0, 0, 0, 0, 0, 0));
+ /// assert_eq!(socket.ip(), &Ipv6Addr::new(76, 45, 0, 0, 0, 0, 0, 0));
+ /// ```
+ #[stable(feature = "sockaddr_setters", since = "1.9.0")]
+ pub fn set_ip(&mut self, new_ip: Ipv6Addr) {
+ self.inner.sin6_addr = *new_ip.as_inner()
+ }
+
+ /// Returns the port number associated with this socket address.
+ ///
+ /// # Examples
+ ///
+ /// ```
+ /// use std::net::{SocketAddrV6, Ipv6Addr};
+ ///
+ /// let socket = SocketAddrV6::new(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1), 8080, 0, 0);
+ /// assert_eq!(socket.port(), 8080);
+ /// ```
+ #[stable(feature = "rust1", since = "1.0.0")]
+ pub fn port(&self) -> u16 {
+ ntohs(self.inner.sin6_port)
+ }
+
+ /// Changes the port number associated with this socket address.
+ ///
+ /// # Examples
+ ///
+ /// ```
+ /// use std::net::{SocketAddrV6, Ipv6Addr};
+ ///
+ /// let mut socket = SocketAddrV6::new(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1), 8080, 0, 0);
+ /// socket.set_port(4242);
+ /// assert_eq!(socket.port(), 4242);
+ /// ```
+ #[stable(feature = "sockaddr_setters", since = "1.9.0")]
+ pub fn set_port(&mut self, new_port: u16) {
+ self.inner.sin6_port = htons(new_port);
+ }
+
+ /// Returns the flow information associated with this address.
+ ///
+ /// This information corresponds to the `sin6_flowinfo` field in C's `netinet/in.h`,
+ /// as specified in [IETF RFC 2553, Section 3.3].
+ /// It combines information about the flow label and the traffic class as specified
+ /// in [IETF RFC 2460], respectively [Section 6] and [Section 7].
+ ///
+ /// [IETF RFC 2553, Section 3.3]: https://tools.ietf.org/html/rfc2553#section-3.3
+ /// [IETF RFC 2460]: https://tools.ietf.org/html/rfc2460
+ /// [Section 6]: https://tools.ietf.org/html/rfc2460#section-6
+ /// [Section 7]: https://tools.ietf.org/html/rfc2460#section-7
+ ///
+ /// # Examples
+ ///
+ /// ```
+ /// use std::net::{SocketAddrV6, Ipv6Addr};
+ ///
+ /// let socket = SocketAddrV6::new(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1), 8080, 10, 0);
+ /// assert_eq!(socket.flowinfo(), 10);
+ /// ```
+ #[stable(feature = "rust1", since = "1.0.0")]
+ pub fn flowinfo(&self) -> u32 {
+ self.inner.sin6_flowinfo
+ }
+
+ /// Changes the flow information associated with this socket address.
+ ///
+ /// See the [`flowinfo`] method's documentation for more details.
+ ///
+ /// [`flowinfo`]: #method.flowinfo
+ ///
+ /// # Examples
+ ///
+ /// ```
+ /// use std::net::{SocketAddrV6, Ipv6Addr};
+ ///
+ /// let mut socket = SocketAddrV6::new(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1), 8080, 10, 0);
+ /// socket.set_flowinfo(56);
+ /// assert_eq!(socket.flowinfo(), 56);
+ /// ```
+ #[stable(feature = "sockaddr_setters", since = "1.9.0")]
+ pub fn set_flowinfo(&mut self, new_flowinfo: u32) {
+ self.inner.sin6_flowinfo = new_flowinfo;
+ }
+
+ /// Returns the scope ID associated with this address.
+ ///
+ /// This information corresponds to the `sin6_scope_id` field in C's `netinet/in.h`,
+ /// as specified in [IETF RFC 2553, Section 3.3].
+ ///
+ /// [IETF RFC 2553, Section 3.3]: https://tools.ietf.org/html/rfc2553#section-3.3
+ ///
+ /// # Examples
+ ///
+ /// ```
+ /// use std::net::{SocketAddrV6, Ipv6Addr};
+ ///
+ /// let socket = SocketAddrV6::new(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1), 8080, 0, 78);
+ /// assert_eq!(socket.scope_id(), 78);
+ /// ```
+ #[stable(feature = "rust1", since = "1.0.0")]
+ pub fn scope_id(&self) -> u32 {
+ self.inner.sin6_scope_id
+ }
+
+ /// Changes the scope ID associated with this socket address.
+ ///
+ /// See the [`scope_id`] method's documentation for more details.
+ ///
+ /// [`scope_id`]: #method.scope_id
+ ///
+ /// # Examples
+ ///
+ /// ```
+ /// use std::net::{SocketAddrV6, Ipv6Addr};
+ ///
+ /// let mut socket = SocketAddrV6::new(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1), 8080, 0, 78);
+ /// socket.set_scope_id(42);
+ /// assert_eq!(socket.scope_id(), 42);
+ /// ```
+ #[stable(feature = "sockaddr_setters", since = "1.9.0")]
+ pub fn set_scope_id(&mut self, new_scope_id: u32) {
+ self.inner.sin6_scope_id = new_scope_id;
+ }
+}
+
+impl FromInner<c::sockaddr_in> for SocketAddrV4 {
+ fn from_inner(addr: c::sockaddr_in) -> SocketAddrV4 {
+ SocketAddrV4 { inner: addr }
+ }
+}
+
+impl FromInner<c::sockaddr_in6> for SocketAddrV6 {
+ fn from_inner(addr: c::sockaddr_in6) -> SocketAddrV6 {
+ SocketAddrV6 { inner: addr }
+ }
+}
+
+#[stable(feature = "ip_from_ip", since = "1.16.0")]
+impl From<SocketAddrV4> for SocketAddr {
+ /// Converts a [`SocketAddrV4`] into a [`SocketAddr::V4`].
+ ///
+ /// [`SocketAddrV4`]: ../../std/net/struct.SocketAddrV4.html
+ /// [`SocketAddr::V4`]: ../../std/net/enum.SocketAddr.html#variant.V4
+ fn from(sock4: SocketAddrV4) -> SocketAddr {
+ SocketAddr::V4(sock4)
+ }
+}
+
+#[stable(feature = "ip_from_ip", since = "1.16.0")]
+impl From<SocketAddrV6> for SocketAddr {
+ /// Converts a [`SocketAddrV6`] into a [`SocketAddr::V6`].
+ ///
+ /// [`SocketAddrV6`]: ../../std/net/struct.SocketAddrV6.html
+ /// [`SocketAddr::V6`]: ../../std/net/enum.SocketAddr.html#variant.V6
+ fn from(sock6: SocketAddrV6) -> SocketAddr {
+ SocketAddr::V6(sock6)
+ }
+}
+
+#[stable(feature = "addr_from_into_ip", since = "1.17.0")]
+impl<I: Into<IpAddr>> From<(I, u16)> for SocketAddr {
+ /// Converts a tuple struct (Into<[`IpAddr`]>, `u16`) into a [`SocketAddr`].
+ ///
+ /// This conversion creates a [`SocketAddr::V4`] for a [`IpAddr::V4`]
+ /// and creates a [`SocketAddr::V6`] for a [`IpAddr::V6`].
+ ///
+ /// `u16` is treated as port of the newly created [`SocketAddr`].
+ ///
+ /// [`IpAddr`]: ../../std/net/enum.IpAddr.html
+ /// [`IpAddr::V4`]: ../../std/net/enum.IpAddr.html#variant.V4
+ /// [`IpAddr::V6`]: ../../std/net/enum.IpAddr.html#variant.V6
+ /// [`SocketAddr`]: ../../std/net/enum.SocketAddr.html
+ /// [`SocketAddr::V4`]: ../../std/net/enum.SocketAddr.html#variant.V4
+ /// [`SocketAddr::V6`]: ../../std/net/enum.SocketAddr.html#variant.V6
+ fn from(pieces: (I, u16)) -> SocketAddr {
+ SocketAddr::new(pieces.0.into(), pieces.1)
+ }
+}
+
+impl<'a> IntoInner<(*const c::sockaddr, c::socklen_t)> for &'a SocketAddr {
+ fn into_inner(self) -> (*const c::sockaddr, c::socklen_t) {
+ match *self {
+ SocketAddr::V4(ref a) => {
+ (a as *const _ as *const _, mem::size_of_val(a) as c::socklen_t)
+ }
+ SocketAddr::V6(ref a) => {
+ (a as *const _ as *const _, mem::size_of_val(a) as c::socklen_t)
+ }
+ }
+ }
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl fmt::Display for SocketAddr {
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+ match *self {
+ SocketAddr::V4(ref a) => a.fmt(f),
+ SocketAddr::V6(ref a) => a.fmt(f),
+ }
+ }
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl fmt::Display for SocketAddrV4 {
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+ // Fast path: if there's no alignment stuff, write to the output buffer
+ // directly
+ if f.precision().is_none() && f.width().is_none() {
+ write!(f, "{}:{}", self.ip(), self.port())
+ } else {
+ const IPV4_SOCKET_BUF_LEN: usize = (3 * 4) // the segments
+ + 3 // the separators
+ + 1 + 5; // the port
+ let mut buf = [0; IPV4_SOCKET_BUF_LEN];
+ let mut buf_slice = &mut buf[..];
+
+ // Unwrap is fine because writing to a sufficiently-sized
+ // buffer is infallible
+ write!(buf_slice, "{}:{}", self.ip(), self.port()).unwrap();
+ let len = IPV4_SOCKET_BUF_LEN - buf_slice.len();
+
+ // This unsafe is OK because we know what is being written to the buffer
+ let buf = unsafe { crate::str::from_utf8_unchecked(&buf[..len]) };
+ f.pad(buf)
+ }
+ }
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl fmt::Debug for SocketAddrV4 {
+ fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
+ fmt::Display::fmt(self, fmt)
+ }
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl fmt::Display for SocketAddrV6 {
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+ // Fast path: if there's no alignment stuff, write to the output
+ // buffer directly
+ if f.precision().is_none() && f.width().is_none() {
+ write!(f, "[{}]:{}", self.ip(), self.port())
+ } else {
+ const IPV6_SOCKET_BUF_LEN: usize = (4 * 8) // The address
+ + 7 // The colon separators
+ + 2 // The brackets
+ + 1 + 5; // The port
+
+ let mut buf = [0; IPV6_SOCKET_BUF_LEN];
+ let mut buf_slice = &mut buf[..];
+
+ // Unwrap is fine because writing to a sufficiently-sized
+ // buffer is infallible
+ write!(buf_slice, "[{}]:{}", self.ip(), self.port()).unwrap();
+ let len = IPV6_SOCKET_BUF_LEN - buf_slice.len();
+
+ // This unsafe is OK because we know what is being written to the buffer
+ let buf = unsafe { crate::str::from_utf8_unchecked(&buf[..len]) };
+ f.pad(buf)
+ }
+ }
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl fmt::Debug for SocketAddrV6 {
+ fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
+ fmt::Display::fmt(self, fmt)
+ }
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl Clone for SocketAddrV4 {
+ fn clone(&self) -> SocketAddrV4 {
+ *self
+ }
+}
+#[stable(feature = "rust1", since = "1.0.0")]
+impl Clone for SocketAddrV6 {
+ fn clone(&self) -> SocketAddrV6 {
+ *self
+ }
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl PartialEq for SocketAddrV4 {
+ fn eq(&self, other: &SocketAddrV4) -> bool {
+ self.inner.sin_port == other.inner.sin_port
+ && self.inner.sin_addr.s_addr == other.inner.sin_addr.s_addr
+ }
+}
+#[stable(feature = "rust1", since = "1.0.0")]
+impl PartialEq for SocketAddrV6 {
+ fn eq(&self, other: &SocketAddrV6) -> bool {
+ self.inner.sin6_port == other.inner.sin6_port
+ && self.inner.sin6_addr.s6_addr == other.inner.sin6_addr.s6_addr
+ && self.inner.sin6_flowinfo == other.inner.sin6_flowinfo
+ && self.inner.sin6_scope_id == other.inner.sin6_scope_id
+ }
+}
+#[stable(feature = "rust1", since = "1.0.0")]
+impl Eq for SocketAddrV4 {}
+#[stable(feature = "rust1", since = "1.0.0")]
+impl Eq for SocketAddrV6 {}
+
+#[stable(feature = "socketaddr_ordering", since = "1.45.0")]
+impl PartialOrd for SocketAddrV4 {
+ fn partial_cmp(&self, other: &SocketAddrV4) -> Option<Ordering> {
+ Some(self.cmp(other))
+ }
+}
+
+#[stable(feature = "socketaddr_ordering", since = "1.45.0")]
+impl PartialOrd for SocketAddrV6 {
+ fn partial_cmp(&self, other: &SocketAddrV6) -> Option<Ordering> {
+ Some(self.cmp(other))
+ }
+}
+
+#[stable(feature = "socketaddr_ordering", since = "1.45.0")]
+impl Ord for SocketAddrV4 {
+ fn cmp(&self, other: &SocketAddrV4) -> Ordering {
+ self.ip().cmp(other.ip()).then(self.port().cmp(&other.port()))
+ }
+}
+
+#[stable(feature = "socketaddr_ordering", since = "1.45.0")]
+impl Ord for SocketAddrV6 {
+ fn cmp(&self, other: &SocketAddrV6) -> Ordering {
+ self.ip().cmp(other.ip()).then(self.port().cmp(&other.port()))
+ }
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl hash::Hash for SocketAddrV4 {
+ fn hash<H: hash::Hasher>(&self, s: &mut H) {
+ (self.inner.sin_port, self.inner.sin_addr.s_addr).hash(s)
+ }
+}
+#[stable(feature = "rust1", since = "1.0.0")]
+impl hash::Hash for SocketAddrV6 {
+ fn hash<H: hash::Hasher>(&self, s: &mut H) {
+ (
+ self.inner.sin6_port,
+ &self.inner.sin6_addr.s6_addr,
+ self.inner.sin6_flowinfo,
+ self.inner.sin6_scope_id,
+ )
+ .hash(s)
+ }
+}
+
+/// A trait for objects which can be converted or resolved to one or more
+/// [`SocketAddr`] values.
+///
+/// This trait is used for generic address resolution when constructing network
+/// objects. By default it is implemented for the following types:
+///
+/// * [`SocketAddr`]: [`to_socket_addrs`] is the identity function.
+///
+/// * [`SocketAddrV4`], [`SocketAddrV6`], `(`[`IpAddr`]`, `[`u16`]`)`,
+/// `(`[`Ipv4Addr`]`, `[`u16`]`)`, `(`[`Ipv6Addr`]`, `[`u16`]`)`:
+/// [`to_socket_addrs`] constructs a [`SocketAddr`] trivially.
+///
+/// * `(`[`&str`]`, `[`u16`]`)`: the string should be either a string representation
+/// of an [`IpAddr`] address as expected by [`FromStr`] implementation or a host
+/// name.
+///
+/// * [`&str`]: the string should be either a string representation of a
+/// [`SocketAddr`] as expected by its [`FromStr`] implementation or a string like
+/// `<host_name>:<port>` pair where `<port>` is a [`u16`] value.
+///
+/// This trait allows constructing network objects like [`TcpStream`] or
+/// [`UdpSocket`] easily with values of various types for the bind/connection
+/// address. It is needed because sometimes one type is more appropriate than
+/// the other: for simple uses a string like `"localhost:12345"` is much nicer
+/// than manual construction of the corresponding [`SocketAddr`], but sometimes
+/// [`SocketAddr`] value is *the* main source of the address, and converting it to
+/// some other type (e.g., a string) just for it to be converted back to
+/// [`SocketAddr`] in constructor methods is pointless.
+///
+/// Addresses returned by the operating system that are not IP addresses are
+/// silently ignored.
+///
+/// [`FromStr`]: ../../std/str/trait.FromStr.html
+/// [`IpAddr`]: ../../std/net/enum.IpAddr.html
+/// [`Ipv4Addr`]: ../../std/net/struct.Ipv4Addr.html
+/// [`Ipv6Addr`]: ../../std/net/struct.Ipv6Addr.html
+/// [`SocketAddr`]: ../../std/net/enum.SocketAddr.html
+/// [`SocketAddrV4`]: ../../std/net/struct.SocketAddrV4.html
+/// [`SocketAddrV6`]: ../../std/net/struct.SocketAddrV6.html
+/// [`&str`]: ../../std/primitive.str.html
+/// [`TcpStream`]: ../../std/net/struct.TcpStream.html
+/// [`to_socket_addrs`]: #tymethod.to_socket_addrs
+/// [`UdpSocket`]: ../../std/net/struct.UdpSocket.html
+/// [`u16`]: ../../std/primitive.u16.html
+///
+/// # Examples
+///
+/// Creating a [`SocketAddr`] iterator that yields one item:
+///
+/// ```
+/// use std::net::{ToSocketAddrs, SocketAddr};
+///
+/// let addr = SocketAddr::from(([127, 0, 0, 1], 443));
+/// let mut addrs_iter = addr.to_socket_addrs().unwrap();
+///
+/// assert_eq!(Some(addr), addrs_iter.next());
+/// assert!(addrs_iter.next().is_none());
+/// ```
+///
+/// Creating a [`SocketAddr`] iterator from a hostname:
+///
+/// ```no_run
+/// use std::net::{SocketAddr, ToSocketAddrs};
+///
+/// // assuming 'localhost' resolves to 127.0.0.1
+/// let mut addrs_iter = "localhost:443".to_socket_addrs().unwrap();
+/// assert_eq!(addrs_iter.next(), Some(SocketAddr::from(([127, 0, 0, 1], 443))));
+/// assert!(addrs_iter.next().is_none());
+///
+/// // assuming 'foo' does not resolve
+/// assert!("foo:443".to_socket_addrs().is_err());
+/// ```
+///
+/// Creating a [`SocketAddr`] iterator that yields multiple items:
+///
+/// ```
+/// use std::net::{SocketAddr, ToSocketAddrs};
+///
+/// let addr1 = SocketAddr::from(([0, 0, 0, 0], 80));
+/// let addr2 = SocketAddr::from(([127, 0, 0, 1], 443));
+/// let addrs = vec![addr1, addr2];
+///
+/// let mut addrs_iter = (&addrs[..]).to_socket_addrs().unwrap();
+///
+/// assert_eq!(Some(addr1), addrs_iter.next());
+/// assert_eq!(Some(addr2), addrs_iter.next());
+/// assert!(addrs_iter.next().is_none());
+/// ```
+///
+/// Attempting to create a [`SocketAddr`] iterator from an improperly formatted
+/// socket address `&str` (missing the port):
+///
+/// ```
+/// use std::io;
+/// use std::net::ToSocketAddrs;
+///
+/// let err = "127.0.0.1".to_socket_addrs().unwrap_err();
+/// assert_eq!(err.kind(), io::ErrorKind::InvalidInput);
+/// ```
+///
+/// [`TcpStream::connect`] is an example of an function that utilizes
+/// `ToSocketAddrs` as a trait bound on its parameter in order to accept
+/// different types:
+///
+/// ```no_run
+/// use std::net::{TcpStream, Ipv4Addr};
+///
+/// let stream = TcpStream::connect(("127.0.0.1", 443));
+/// // or
+/// let stream = TcpStream::connect("127.0.0.1:443");
+/// // or
+/// let stream = TcpStream::connect((Ipv4Addr::new(127, 0, 0, 1), 443));
+/// ```
+///
+/// [`TcpStream::connect`]: ../../std/net/struct.TcpStream.html#method.connect
+#[stable(feature = "rust1", since = "1.0.0")]
+pub trait ToSocketAddrs {
+ /// Returned iterator over socket addresses which this type may correspond
+ /// to.
+ #[stable(feature = "rust1", since = "1.0.0")]
+ type Iter: Iterator<Item = SocketAddr>;
+
+ /// Converts this object to an iterator of resolved `SocketAddr`s.
+ ///
+ /// The returned iterator may not actually yield any values depending on the
+ /// outcome of any resolution performed.
+ ///
+ /// Note that this function may block the current thread while resolution is
+ /// performed.
+ #[stable(feature = "rust1", since = "1.0.0")]
+ fn to_socket_addrs(&self) -> io::Result<Self::Iter>;
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl ToSocketAddrs for SocketAddr {
+ type Iter = option::IntoIter<SocketAddr>;
+ fn to_socket_addrs(&self) -> io::Result<option::IntoIter<SocketAddr>> {
+ Ok(Some(*self).into_iter())
+ }
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl ToSocketAddrs for SocketAddrV4 {
+ type Iter = option::IntoIter<SocketAddr>;
+ fn to_socket_addrs(&self) -> io::Result<option::IntoIter<SocketAddr>> {
+ SocketAddr::V4(*self).to_socket_addrs()
+ }
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl ToSocketAddrs for SocketAddrV6 {
+ type Iter = option::IntoIter<SocketAddr>;
+ fn to_socket_addrs(&self) -> io::Result<option::IntoIter<SocketAddr>> {
+ SocketAddr::V6(*self).to_socket_addrs()
+ }
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl ToSocketAddrs for (IpAddr, u16) {
+ type Iter = option::IntoIter<SocketAddr>;
+ fn to_socket_addrs(&self) -> io::Result<option::IntoIter<SocketAddr>> {
+ let (ip, port) = *self;
+ match ip {
+ IpAddr::V4(ref a) => (*a, port).to_socket_addrs(),
+ IpAddr::V6(ref a) => (*a, port).to_socket_addrs(),
+ }
+ }
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl ToSocketAddrs for (Ipv4Addr, u16) {
+ type Iter = option::IntoIter<SocketAddr>;
+ fn to_socket_addrs(&self) -> io::Result<option::IntoIter<SocketAddr>> {
+ let (ip, port) = *self;
+ SocketAddrV4::new(ip, port).to_socket_addrs()
+ }
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl ToSocketAddrs for (Ipv6Addr, u16) {
+ type Iter = option::IntoIter<SocketAddr>;
+ fn to_socket_addrs(&self) -> io::Result<option::IntoIter<SocketAddr>> {
+ let (ip, port) = *self;
+ SocketAddrV6::new(ip, port, 0, 0).to_socket_addrs()
+ }
+}
+
+fn resolve_socket_addr(lh: LookupHost) -> io::Result<vec::IntoIter<SocketAddr>> {
+ let p = lh.port();
+ let v: Vec<_> = lh
+ .map(|mut a| {
+ a.set_port(p);
+ a
+ })
+ .collect();
+ Ok(v.into_iter())
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl ToSocketAddrs for (&str, u16) {
+ type Iter = vec::IntoIter<SocketAddr>;
+ fn to_socket_addrs(&self) -> io::Result<vec::IntoIter<SocketAddr>> {
+ let (host, port) = *self;
+
+ // try to parse the host as a regular IP address first
+ if let Ok(addr) = host.parse::<Ipv4Addr>() {
+ let addr = SocketAddrV4::new(addr, port);
+ return Ok(vec![SocketAddr::V4(addr)].into_iter());
+ }
+ if let Ok(addr) = host.parse::<Ipv6Addr>() {
+ let addr = SocketAddrV6::new(addr, port, 0, 0);
+ return Ok(vec![SocketAddr::V6(addr)].into_iter());
+ }
+
+ resolve_socket_addr((host, port).try_into()?)
+ }
+}
+
+#[stable(feature = "string_u16_to_socket_addrs", since = "1.46.0")]
+impl ToSocketAddrs for (String, u16) {
+ type Iter = vec::IntoIter<SocketAddr>;
+ fn to_socket_addrs(&self) -> io::Result<vec::IntoIter<SocketAddr>> {
+ (&*self.0, self.1).to_socket_addrs()
+ }
+}
+
+// accepts strings like 'localhost:12345'
+#[stable(feature = "rust1", since = "1.0.0")]
+impl ToSocketAddrs for str {
+ type Iter = vec::IntoIter<SocketAddr>;
+ fn to_socket_addrs(&self) -> io::Result<vec::IntoIter<SocketAddr>> {
+ // try to parse as a regular SocketAddr first
+ if let Ok(addr) = self.parse() {
+ return Ok(vec![addr].into_iter());
+ }
+
+ resolve_socket_addr(self.try_into()?)
+ }
+}
+
+#[stable(feature = "slice_to_socket_addrs", since = "1.8.0")]
+impl<'a> ToSocketAddrs for &'a [SocketAddr] {
+ type Iter = iter::Cloned<slice::Iter<'a, SocketAddr>>;
+
+ fn to_socket_addrs(&self) -> io::Result<Self::Iter> {
+ Ok(self.iter().cloned())
+ }
+}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+impl<T: ToSocketAddrs + ?Sized> ToSocketAddrs for &T {
+ type Iter = T::Iter;
+ fn to_socket_addrs(&self) -> io::Result<T::Iter> {
+ (**self).to_socket_addrs()
+ }
+}
+
+#[stable(feature = "string_to_socket_addrs", since = "1.16.0")]
+impl ToSocketAddrs for String {
+ type Iter = vec::IntoIter<SocketAddr>;
+ fn to_socket_addrs(&self) -> io::Result<vec::IntoIter<SocketAddr>> {
+ (&**self).to_socket_addrs()
+ }
+}
+
+#[cfg(all(test, not(target_os = "emscripten")))]
+mod tests {
+ use crate::net::test::{sa4, sa6, tsa};
+ use crate::net::*;
+
+ #[test]
+ fn to_socket_addr_ipaddr_u16() {
+ let a = Ipv4Addr::new(77, 88, 21, 11);
+ let p = 12345;
+ let e = SocketAddr::V4(SocketAddrV4::new(a, p));
+ assert_eq!(Ok(vec![e]), tsa((a, p)));
+ }
+
+ #[test]
+ fn to_socket_addr_str_u16() {
+ let a = sa4(Ipv4Addr::new(77, 88, 21, 11), 24352);
+ assert_eq!(Ok(vec![a]), tsa(("77.88.21.11", 24352)));
+
+ let a = sa6(Ipv6Addr::new(0x2a02, 0x6b8, 0, 1, 0, 0, 0, 1), 53);
+ assert_eq!(Ok(vec![a]), tsa(("2a02:6b8:0:1::1", 53)));
+
+ let a = sa4(Ipv4Addr::new(127, 0, 0, 1), 23924);
+ #[cfg(not(target_env = "sgx"))]
+ assert!(tsa(("localhost", 23924)).unwrap().contains(&a));
+ #[cfg(target_env = "sgx")]
+ let _ = a;
+ }
+
+ #[test]
+ fn to_socket_addr_str() {
+ let a = sa4(Ipv4Addr::new(77, 88, 21, 11), 24352);
+ assert_eq!(Ok(vec![a]), tsa("77.88.21.11:24352"));
+
+ let a = sa6(Ipv6Addr::new(0x2a02, 0x6b8, 0, 1, 0, 0, 0, 1), 53);
+ assert_eq!(Ok(vec![a]), tsa("[2a02:6b8:0:1::1]:53"));
+
+ let a = sa4(Ipv4Addr::new(127, 0, 0, 1), 23924);
+ #[cfg(not(target_env = "sgx"))]
+ assert!(tsa("localhost:23924").unwrap().contains(&a));
+ #[cfg(target_env = "sgx")]
+ let _ = a;
+ }
+
+ #[test]
+ fn to_socket_addr_string() {
+ let a = sa4(Ipv4Addr::new(77, 88, 21, 11), 24352);
+ assert_eq!(Ok(vec![a]), tsa(&*format!("{}:{}", "77.88.21.11", "24352")));
+ assert_eq!(Ok(vec![a]), tsa(&format!("{}:{}", "77.88.21.11", "24352")));
+ assert_eq!(Ok(vec![a]), tsa(format!("{}:{}", "77.88.21.11", "24352")));
+
+ let s = format!("{}:{}", "77.88.21.11", "24352");
+ assert_eq!(Ok(vec![a]), tsa(s));
+ // s has been moved into the tsa call
+ }
+
+ #[test]
+ fn bind_udp_socket_bad() {
+ // rust-lang/rust#53957: This is a regression test for a parsing problem
+ // discovered as part of issue rust-lang/rust#23076, where we were
+ // incorrectly parsing invalid input and then that would result in a
+ // successful `UdpSocket` binding when we would expect failure.
+ //
+ // At one time, this test was written as a call to `tsa` with
+ // INPUT_23076. However, that structure yields an unreliable test,
+ // because it ends up passing junk input to the DNS server, and some DNS
+ // servers will respond with `Ok` to such input, with the ip address of
+ // the DNS server itself.
+ //
+ // This form of the test is more robust: even when the DNS server
+ // returns its own address, it is still an error to bind a UDP socket to
+ // a non-local address, and so we still get an error here in that case.
+
+ const INPUT_23076: &'static str = "1200::AB00:1234::2552:7777:1313:34300";
+
+ assert!(crate::net::UdpSocket::bind(INPUT_23076).is_err())
+ }
+
+ #[test]
+ fn set_ip() {
+ fn ip4(low: u8) -> Ipv4Addr {
+ Ipv4Addr::new(77, 88, 21, low)
+ }
+ fn ip6(low: u16) -> Ipv6Addr {
+ Ipv6Addr::new(0x2a02, 0x6b8, 0, 1, 0, 0, 0, low)
+ }
+
+ let mut v4 = SocketAddrV4::new(ip4(11), 80);
+ assert_eq!(v4.ip(), &ip4(11));
+ v4.set_ip(ip4(12));
+ assert_eq!(v4.ip(), &ip4(12));
+
+ let mut addr = SocketAddr::V4(v4);
+ assert_eq!(addr.ip(), IpAddr::V4(ip4(12)));
+ addr.set_ip(IpAddr::V4(ip4(13)));
+ assert_eq!(addr.ip(), IpAddr::V4(ip4(13)));
+ addr.set_ip(IpAddr::V6(ip6(14)));
+ assert_eq!(addr.ip(), IpAddr::V6(ip6(14)));
+
+ let mut v6 = SocketAddrV6::new(ip6(1), 80, 0, 0);
+ assert_eq!(v6.ip(), &ip6(1));
+ v6.set_ip(ip6(2));
+ assert_eq!(v6.ip(), &ip6(2));
+
+ let mut addr = SocketAddr::V6(v6);
+ assert_eq!(addr.ip(), IpAddr::V6(ip6(2)));
+ addr.set_ip(IpAddr::V6(ip6(3)));
+ assert_eq!(addr.ip(), IpAddr::V6(ip6(3)));
+ addr.set_ip(IpAddr::V4(ip4(4)));
+ assert_eq!(addr.ip(), IpAddr::V4(ip4(4)));
+ }
+
+ #[test]
+ fn set_port() {
+ let mut v4 = SocketAddrV4::new(Ipv4Addr::new(77, 88, 21, 11), 80);
+ assert_eq!(v4.port(), 80);
+ v4.set_port(443);
+ assert_eq!(v4.port(), 443);
+
+ let mut addr = SocketAddr::V4(v4);
+ assert_eq!(addr.port(), 443);
+ addr.set_port(8080);
+ assert_eq!(addr.port(), 8080);
+
+ let mut v6 = SocketAddrV6::new(Ipv6Addr::new(0x2a02, 0x6b8, 0, 1, 0, 0, 0, 1), 80, 0, 0);
+ assert_eq!(v6.port(), 80);
+ v6.set_port(443);
+ assert_eq!(v6.port(), 443);
+
+ let mut addr = SocketAddr::V6(v6);
+ assert_eq!(addr.port(), 443);
+ addr.set_port(8080);
+ assert_eq!(addr.port(), 8080);
+ }
+
+ #[test]
+ fn set_flowinfo() {
+ let mut v6 = SocketAddrV6::new(Ipv6Addr::new(0x2a02, 0x6b8, 0, 1, 0, 0, 0, 1), 80, 10, 0);
+ assert_eq!(v6.flowinfo(), 10);
+ v6.set_flowinfo(20);
+ assert_eq!(v6.flowinfo(), 20);
+ }
+
+ #[test]
+ fn set_scope_id() {
+ let mut v6 = SocketAddrV6::new(Ipv6Addr::new(0x2a02, 0x6b8, 0, 1, 0, 0, 0, 1), 80, 0, 10);
+ assert_eq!(v6.scope_id(), 10);
+ v6.set_scope_id(20);
+ assert_eq!(v6.scope_id(), 20);
+ }
+
+ #[test]
+ fn is_v4() {
+ let v4 = SocketAddr::V4(SocketAddrV4::new(Ipv4Addr::new(77, 88, 21, 11), 80));
+ assert!(v4.is_ipv4());
+ assert!(!v4.is_ipv6());
+ }
+
+ #[test]
+ fn is_v6() {
+ let v6 = SocketAddr::V6(SocketAddrV6::new(
+ Ipv6Addr::new(0x2a02, 0x6b8, 0, 1, 0, 0, 0, 1),
+ 80,
+ 10,
+ 0,
+ ));
+ assert!(!v6.is_ipv4());
+ assert!(v6.is_ipv6());
+ }
+
+ #[test]
+ fn socket_v4_to_str() {
+ let socket = SocketAddrV4::new(Ipv4Addr::new(192, 168, 0, 1), 8080);
+
+ assert_eq!(format!("{}", socket), "192.168.0.1:8080");
+ assert_eq!(format!("{:<20}", socket), "192.168.0.1:8080 ");
+ assert_eq!(format!("{:>20}", socket), " 192.168.0.1:8080");
+ assert_eq!(format!("{:^20}", socket), " 192.168.0.1:8080 ");
+ assert_eq!(format!("{:.10}", socket), "192.168.0.");
+ }
+
+ #[test]
+ fn socket_v6_to_str() {
+ let socket: SocketAddrV6 = "[2a02:6b8:0:1::1]:53".parse().unwrap();
+
+ assert_eq!(format!("{}", socket), "[2a02:6b8:0:1::1]:53");
+ assert_eq!(format!("{:<24}", socket), "[2a02:6b8:0:1::1]:53 ");
+ assert_eq!(format!("{:>24}", socket), " [2a02:6b8:0:1::1]:53");
+ assert_eq!(format!("{:^24}", socket), " [2a02:6b8:0:1::1]:53 ");
+ assert_eq!(format!("{:.15}", socket), "[2a02:6b8:0:1::");
+ }
+
+ #[test]
+ fn compare() {
+ let v4_1 = "224.120.45.1:23456".parse::<SocketAddrV4>().unwrap();
+ let v4_2 = "224.210.103.5:12345".parse::<SocketAddrV4>().unwrap();
+ let v4_3 = "224.210.103.5:23456".parse::<SocketAddrV4>().unwrap();
+ let v6_1 = "[2001:db8:f00::1002]:23456".parse::<SocketAddrV6>().unwrap();
+ let v6_2 = "[2001:db8:f00::2001]:12345".parse::<SocketAddrV6>().unwrap();
+ let v6_3 = "[2001:db8:f00::2001]:23456".parse::<SocketAddrV6>().unwrap();
+
+ // equality
+ assert_eq!(v4_1, v4_1);
+ assert_eq!(v6_1, v6_1);
+ assert_eq!(SocketAddr::V4(v4_1), SocketAddr::V4(v4_1));
+ assert_eq!(SocketAddr::V6(v6_1), SocketAddr::V6(v6_1));
+ assert!(v4_1 != v4_2);
+ assert!(v6_1 != v6_2);
+
+ // compare different addresses
+ assert!(v4_1 < v4_2);
+ assert!(v6_1 < v6_2);
+ assert!(v4_2 > v4_1);
+ assert!(v6_2 > v6_1);
+
+ // compare the same address with different ports
+ assert!(v4_2 < v4_3);
+ assert!(v6_2 < v6_3);
+ assert!(v4_3 > v4_2);
+ assert!(v6_3 > v6_2);
+
+ // compare different addresses with the same port
+ assert!(v4_1 < v4_3);
+ assert!(v6_1 < v6_3);
+ assert!(v4_3 > v4_1);
+ assert!(v6_3 > v6_1);
+
+ // compare with an inferred right-hand side
+ assert_eq!(v4_1, "224.120.45.1:23456".parse().unwrap());
+ assert_eq!(v6_1, "[2001:db8:f00::1002]:23456".parse().unwrap());
+ assert_eq!(SocketAddr::V4(v4_1), "224.120.45.1:23456".parse().unwrap());
+ }
+}
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