| use crate::cmp; |
| use crate::convert::{TryFrom, TryInto}; |
| use crate::ffi::CString; |
| use crate::fmt; |
| use crate::io::{self, Error, ErrorKind, IoSlice, IoSliceMut}; |
| use crate::mem; |
| use crate::net::{Ipv4Addr, Ipv6Addr, Shutdown, SocketAddr}; |
| use crate::ptr; |
| use crate::sys::net::netc as c; |
| use crate::sys::net::{cvt, cvt_gai, cvt_r, init, wrlen_t, Socket}; |
| use crate::sys_common::{AsInner, FromInner, IntoInner}; |
| use crate::time::Duration; |
| |
| use libc::{c_int, c_void}; |
| |
| #[cfg(not(any( |
| target_os = "dragonfly", |
| target_os = "freebsd", |
| target_os = "ios", |
| target_os = "macos", |
| target_os = "openbsd", |
| target_os = "netbsd", |
| target_os = "solaris", |
| target_os = "haiku", |
| target_os = "l4re" |
| )))] |
| use crate::sys::net::netc::IPV6_ADD_MEMBERSHIP; |
| #[cfg(not(any( |
| target_os = "dragonfly", |
| target_os = "freebsd", |
| target_os = "ios", |
| target_os = "macos", |
| target_os = "openbsd", |
| target_os = "netbsd", |
| target_os = "solaris", |
| target_os = "haiku", |
| target_os = "l4re" |
| )))] |
| use crate::sys::net::netc::IPV6_DROP_MEMBERSHIP; |
| #[cfg(any( |
| target_os = "dragonfly", |
| target_os = "freebsd", |
| target_os = "ios", |
| target_os = "macos", |
| target_os = "openbsd", |
| target_os = "netbsd", |
| target_os = "solaris", |
| target_os = "haiku", |
| target_os = "l4re" |
| ))] |
| use crate::sys::net::netc::IPV6_JOIN_GROUP as IPV6_ADD_MEMBERSHIP; |
| #[cfg(any( |
| target_os = "dragonfly", |
| target_os = "freebsd", |
| target_os = "ios", |
| target_os = "macos", |
| target_os = "openbsd", |
| target_os = "netbsd", |
| target_os = "solaris", |
| target_os = "haiku", |
| target_os = "l4re" |
| ))] |
| use crate::sys::net::netc::IPV6_LEAVE_GROUP as IPV6_DROP_MEMBERSHIP; |
| |
| #[cfg(any( |
| target_os = "linux", |
| target_os = "android", |
| target_os = "dragonfly", |
| target_os = "freebsd", |
| target_os = "openbsd", |
| target_os = "netbsd", |
| target_os = "haiku" |
| ))] |
| use libc::MSG_NOSIGNAL; |
| #[cfg(not(any( |
| target_os = "linux", |
| target_os = "android", |
| target_os = "dragonfly", |
| target_os = "freebsd", |
| target_os = "openbsd", |
| target_os = "netbsd", |
| target_os = "haiku" |
| )))] |
| const MSG_NOSIGNAL: c_int = 0x0; |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // sockaddr and misc bindings |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| pub fn setsockopt<T>(sock: &Socket, opt: c_int, val: c_int, payload: T) -> io::Result<()> { |
| unsafe { |
| let payload = &payload as *const T as *const c_void; |
| cvt(c::setsockopt( |
| *sock.as_inner(), |
| opt, |
| val, |
| payload, |
| mem::size_of::<T>() as c::socklen_t, |
| ))?; |
| Ok(()) |
| } |
| } |
| |
| pub fn getsockopt<T: Copy>(sock: &Socket, opt: c_int, val: c_int) -> io::Result<T> { |
| unsafe { |
| let mut slot: T = mem::zeroed(); |
| let mut len = mem::size_of::<T>() as c::socklen_t; |
| cvt(c::getsockopt(*sock.as_inner(), opt, val, &mut slot as *mut _ as *mut _, &mut len))?; |
| assert_eq!(len as usize, mem::size_of::<T>()); |
| Ok(slot) |
| } |
| } |
| |
| fn sockname<F>(f: F) -> io::Result<SocketAddr> |
| where |
| F: FnOnce(*mut c::sockaddr, *mut c::socklen_t) -> c_int, |
| { |
| unsafe { |
| let mut storage: c::sockaddr_storage = mem::zeroed(); |
| let mut len = mem::size_of_val(&storage) as c::socklen_t; |
| cvt(f(&mut storage as *mut _ as *mut _, &mut len))?; |
| sockaddr_to_addr(&storage, len as usize) |
| } |
| } |
| |
| pub fn sockaddr_to_addr(storage: &c::sockaddr_storage, len: usize) -> io::Result<SocketAddr> { |
| match storage.ss_family as c_int { |
| c::AF_INET => { |
| assert!(len as usize >= mem::size_of::<c::sockaddr_in>()); |
| Ok(SocketAddr::V4(FromInner::from_inner(unsafe { |
| *(storage as *const _ as *const c::sockaddr_in) |
| }))) |
| } |
| c::AF_INET6 => { |
| assert!(len as usize >= mem::size_of::<c::sockaddr_in6>()); |
| Ok(SocketAddr::V6(FromInner::from_inner(unsafe { |
| *(storage as *const _ as *const c::sockaddr_in6) |
| }))) |
| } |
| _ => Err(Error::new(ErrorKind::InvalidInput, "invalid argument")), |
| } |
| } |
| |
| #[cfg(target_os = "android")] |
| fn to_ipv6mr_interface(value: u32) -> c_int { |
| value as c_int |
| } |
| |
| #[cfg(not(target_os = "android"))] |
| fn to_ipv6mr_interface(value: u32) -> libc::c_uint { |
| value as libc::c_uint |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // get_host_addresses |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| pub struct LookupHost { |
| original: *mut c::addrinfo, |
| cur: *mut c::addrinfo, |
| port: u16, |
| } |
| |
| impl LookupHost { |
| pub fn port(&self) -> u16 { |
| self.port |
| } |
| } |
| |
| impl Iterator for LookupHost { |
| type Item = SocketAddr; |
| fn next(&mut self) -> Option<SocketAddr> { |
| loop { |
| unsafe { |
| let cur = self.cur.as_ref()?; |
| self.cur = cur.ai_next; |
| match sockaddr_to_addr(mem::transmute(cur.ai_addr), cur.ai_addrlen as usize) { |
| Ok(addr) => return Some(addr), |
| Err(_) => continue, |
| } |
| } |
| } |
| } |
| } |
| |
| unsafe impl Sync for LookupHost {} |
| unsafe impl Send for LookupHost {} |
| |
| impl Drop for LookupHost { |
| fn drop(&mut self) { |
| unsafe { c::freeaddrinfo(self.original) } |
| } |
| } |
| |
| impl TryFrom<&str> for LookupHost { |
| type Error = io::Error; |
| |
| fn try_from(s: &str) -> io::Result<LookupHost> { |
| macro_rules! try_opt { |
| ($e:expr, $msg:expr) => { |
| match $e { |
| Some(r) => r, |
| None => return Err(io::Error::new(io::ErrorKind::InvalidInput, $msg)), |
| } |
| }; |
| } |
| |
| // split the string by ':' and convert the second part to u16 |
| let mut parts_iter = s.rsplitn(2, ':'); |
| let port_str = try_opt!(parts_iter.next(), "invalid socket address"); |
| let host = try_opt!(parts_iter.next(), "invalid socket address"); |
| let port: u16 = try_opt!(port_str.parse().ok(), "invalid port value"); |
| |
| (host, port).try_into() |
| } |
| } |
| |
| impl<'a> TryFrom<(&'a str, u16)> for LookupHost { |
| type Error = io::Error; |
| |
| fn try_from((host, port): (&'a str, u16)) -> io::Result<LookupHost> { |
| init(); |
| |
| let c_host = CString::new(host)?; |
| let mut hints: c::addrinfo = unsafe { mem::zeroed() }; |
| hints.ai_socktype = c::SOCK_STREAM; |
| let mut res = ptr::null_mut(); |
| unsafe { |
| cvt_gai(c::getaddrinfo(c_host.as_ptr(), ptr::null(), &hints, &mut res)) |
| .map(|_| LookupHost { original: res, cur: res, port }) |
| } |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // TCP streams |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| pub struct TcpStream { |
| inner: Socket, |
| } |
| |
| impl TcpStream { |
| pub fn connect(addr: io::Result<&SocketAddr>) -> io::Result<TcpStream> { |
| let addr = addr?; |
| |
| init(); |
| |
| let sock = Socket::new(addr, c::SOCK_STREAM)?; |
| |
| let (addrp, len) = addr.into_inner(); |
| cvt_r(|| unsafe { c::connect(*sock.as_inner(), addrp, len) })?; |
| Ok(TcpStream { inner: sock }) |
| } |
| |
| pub fn connect_timeout(addr: &SocketAddr, timeout: Duration) -> io::Result<TcpStream> { |
| init(); |
| |
| let sock = Socket::new(addr, c::SOCK_STREAM)?; |
| sock.connect_timeout(addr, timeout)?; |
| Ok(TcpStream { inner: sock }) |
| } |
| |
| pub fn socket(&self) -> &Socket { |
| &self.inner |
| } |
| |
| pub fn into_socket(self) -> Socket { |
| self.inner |
| } |
| |
| pub fn set_read_timeout(&self, dur: Option<Duration>) -> io::Result<()> { |
| self.inner.set_timeout(dur, c::SO_RCVTIMEO) |
| } |
| |
| pub fn set_write_timeout(&self, dur: Option<Duration>) -> io::Result<()> { |
| self.inner.set_timeout(dur, c::SO_SNDTIMEO) |
| } |
| |
| pub fn read_timeout(&self) -> io::Result<Option<Duration>> { |
| self.inner.timeout(c::SO_RCVTIMEO) |
| } |
| |
| pub fn write_timeout(&self) -> io::Result<Option<Duration>> { |
| self.inner.timeout(c::SO_SNDTIMEO) |
| } |
| |
| pub fn peek(&self, buf: &mut [u8]) -> io::Result<usize> { |
| self.inner.peek(buf) |
| } |
| |
| pub fn read(&self, buf: &mut [u8]) -> io::Result<usize> { |
| self.inner.read(buf) |
| } |
| |
| pub fn read_vectored(&self, bufs: &mut [IoSliceMut<'_>]) -> io::Result<usize> { |
| self.inner.read_vectored(bufs) |
| } |
| |
| pub fn write(&self, buf: &[u8]) -> io::Result<usize> { |
| let len = cmp::min(buf.len(), <wrlen_t>::max_value() as usize) as wrlen_t; |
| let ret = cvt(unsafe { |
| c::send(*self.inner.as_inner(), buf.as_ptr() as *const c_void, len, MSG_NOSIGNAL) |
| })?; |
| Ok(ret as usize) |
| } |
| |
| pub fn write_vectored(&self, bufs: &[IoSlice<'_>]) -> io::Result<usize> { |
| self.inner.write_vectored(bufs) |
| } |
| |
| pub fn peer_addr(&self) -> io::Result<SocketAddr> { |
| sockname(|buf, len| unsafe { c::getpeername(*self.inner.as_inner(), buf, len) }) |
| } |
| |
| pub fn socket_addr(&self) -> io::Result<SocketAddr> { |
| sockname(|buf, len| unsafe { c::getsockname(*self.inner.as_inner(), buf, len) }) |
| } |
| |
| pub fn shutdown(&self, how: Shutdown) -> io::Result<()> { |
| self.inner.shutdown(how) |
| } |
| |
| pub fn duplicate(&self) -> io::Result<TcpStream> { |
| self.inner.duplicate().map(|s| TcpStream { inner: s }) |
| } |
| |
| pub fn set_nodelay(&self, nodelay: bool) -> io::Result<()> { |
| self.inner.set_nodelay(nodelay) |
| } |
| |
| pub fn nodelay(&self) -> io::Result<bool> { |
| self.inner.nodelay() |
| } |
| |
| pub fn set_ttl(&self, ttl: u32) -> io::Result<()> { |
| setsockopt(&self.inner, c::IPPROTO_IP, c::IP_TTL, ttl as c_int) |
| } |
| |
| pub fn ttl(&self) -> io::Result<u32> { |
| let raw: c_int = getsockopt(&self.inner, c::IPPROTO_IP, c::IP_TTL)?; |
| Ok(raw as u32) |
| } |
| |
| pub fn take_error(&self) -> io::Result<Option<io::Error>> { |
| self.inner.take_error() |
| } |
| |
| pub fn set_nonblocking(&self, nonblocking: bool) -> io::Result<()> { |
| self.inner.set_nonblocking(nonblocking) |
| } |
| } |
| |
| impl FromInner<Socket> for TcpStream { |
| fn from_inner(socket: Socket) -> TcpStream { |
| TcpStream { inner: socket } |
| } |
| } |
| |
| impl fmt::Debug for TcpStream { |
| fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { |
| let mut res = f.debug_struct("TcpStream"); |
| |
| if let Ok(addr) = self.socket_addr() { |
| res.field("addr", &addr); |
| } |
| |
| if let Ok(peer) = self.peer_addr() { |
| res.field("peer", &peer); |
| } |
| |
| let name = if cfg!(windows) { "socket" } else { "fd" }; |
| res.field(name, &self.inner.as_inner()).finish() |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // TCP listeners |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| pub struct TcpListener { |
| inner: Socket, |
| } |
| |
| impl TcpListener { |
| pub fn bind(addr: io::Result<&SocketAddr>) -> io::Result<TcpListener> { |
| let addr = addr?; |
| |
| init(); |
| |
| let sock = Socket::new(addr, c::SOCK_STREAM)?; |
| |
| // On platforms with Berkeley-derived sockets, this allows |
| // to quickly rebind a socket, without needing to wait for |
| // the OS to clean up the previous one. |
| if !cfg!(windows) { |
| setsockopt(&sock, c::SOL_SOCKET, c::SO_REUSEADDR, 1 as c_int)?; |
| } |
| |
| // Bind our new socket |
| let (addrp, len) = addr.into_inner(); |
| cvt(unsafe { c::bind(*sock.as_inner(), addrp, len as _) })?; |
| |
| // Start listening |
| cvt(unsafe { c::listen(*sock.as_inner(), 128) })?; |
| Ok(TcpListener { inner: sock }) |
| } |
| |
| pub fn socket(&self) -> &Socket { |
| &self.inner |
| } |
| |
| pub fn into_socket(self) -> Socket { |
| self.inner |
| } |
| |
| pub fn socket_addr(&self) -> io::Result<SocketAddr> { |
| sockname(|buf, len| unsafe { c::getsockname(*self.inner.as_inner(), buf, len) }) |
| } |
| |
| pub fn accept(&self) -> io::Result<(TcpStream, SocketAddr)> { |
| let mut storage: c::sockaddr_storage = unsafe { mem::zeroed() }; |
| let mut len = mem::size_of_val(&storage) as c::socklen_t; |
| let sock = self.inner.accept(&mut storage as *mut _ as *mut _, &mut len)?; |
| let addr = sockaddr_to_addr(&storage, len as usize)?; |
| Ok((TcpStream { inner: sock }, addr)) |
| } |
| |
| pub fn duplicate(&self) -> io::Result<TcpListener> { |
| self.inner.duplicate().map(|s| TcpListener { inner: s }) |
| } |
| |
| pub fn set_ttl(&self, ttl: u32) -> io::Result<()> { |
| setsockopt(&self.inner, c::IPPROTO_IP, c::IP_TTL, ttl as c_int) |
| } |
| |
| pub fn ttl(&self) -> io::Result<u32> { |
| let raw: c_int = getsockopt(&self.inner, c::IPPROTO_IP, c::IP_TTL)?; |
| Ok(raw as u32) |
| } |
| |
| pub fn set_only_v6(&self, only_v6: bool) -> io::Result<()> { |
| setsockopt(&self.inner, c::IPPROTO_IPV6, c::IPV6_V6ONLY, only_v6 as c_int) |
| } |
| |
| pub fn only_v6(&self) -> io::Result<bool> { |
| let raw: c_int = getsockopt(&self.inner, c::IPPROTO_IPV6, c::IPV6_V6ONLY)?; |
| Ok(raw != 0) |
| } |
| |
| pub fn take_error(&self) -> io::Result<Option<io::Error>> { |
| self.inner.take_error() |
| } |
| |
| pub fn set_nonblocking(&self, nonblocking: bool) -> io::Result<()> { |
| self.inner.set_nonblocking(nonblocking) |
| } |
| } |
| |
| impl FromInner<Socket> for TcpListener { |
| fn from_inner(socket: Socket) -> TcpListener { |
| TcpListener { inner: socket } |
| } |
| } |
| |
| impl fmt::Debug for TcpListener { |
| fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { |
| let mut res = f.debug_struct("TcpListener"); |
| |
| if let Ok(addr) = self.socket_addr() { |
| res.field("addr", &addr); |
| } |
| |
| let name = if cfg!(windows) { "socket" } else { "fd" }; |
| res.field(name, &self.inner.as_inner()).finish() |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // UDP |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| pub struct UdpSocket { |
| inner: Socket, |
| } |
| |
| impl UdpSocket { |
| pub fn bind(addr: io::Result<&SocketAddr>) -> io::Result<UdpSocket> { |
| let addr = addr?; |
| |
| init(); |
| |
| let sock = Socket::new(addr, c::SOCK_DGRAM)?; |
| let (addrp, len) = addr.into_inner(); |
| cvt(unsafe { c::bind(*sock.as_inner(), addrp, len as _) })?; |
| Ok(UdpSocket { inner: sock }) |
| } |
| |
| pub fn socket(&self) -> &Socket { |
| &self.inner |
| } |
| |
| pub fn into_socket(self) -> Socket { |
| self.inner |
| } |
| |
| pub fn peer_addr(&self) -> io::Result<SocketAddr> { |
| sockname(|buf, len| unsafe { c::getpeername(*self.inner.as_inner(), buf, len) }) |
| } |
| |
| pub fn socket_addr(&self) -> io::Result<SocketAddr> { |
| sockname(|buf, len| unsafe { c::getsockname(*self.inner.as_inner(), buf, len) }) |
| } |
| |
| pub fn recv_from(&self, buf: &mut [u8]) -> io::Result<(usize, SocketAddr)> { |
| self.inner.recv_from(buf) |
| } |
| |
| pub fn peek_from(&self, buf: &mut [u8]) -> io::Result<(usize, SocketAddr)> { |
| self.inner.peek_from(buf) |
| } |
| |
| pub fn send_to(&self, buf: &[u8], dst: &SocketAddr) -> io::Result<usize> { |
| let len = cmp::min(buf.len(), <wrlen_t>::max_value() as usize) as wrlen_t; |
| let (dstp, dstlen) = dst.into_inner(); |
| let ret = cvt(unsafe { |
| c::sendto( |
| *self.inner.as_inner(), |
| buf.as_ptr() as *const c_void, |
| len, |
| MSG_NOSIGNAL, |
| dstp, |
| dstlen, |
| ) |
| })?; |
| Ok(ret as usize) |
| } |
| |
| pub fn duplicate(&self) -> io::Result<UdpSocket> { |
| self.inner.duplicate().map(|s| UdpSocket { inner: s }) |
| } |
| |
| pub fn set_read_timeout(&self, dur: Option<Duration>) -> io::Result<()> { |
| self.inner.set_timeout(dur, c::SO_RCVTIMEO) |
| } |
| |
| pub fn set_write_timeout(&self, dur: Option<Duration>) -> io::Result<()> { |
| self.inner.set_timeout(dur, c::SO_SNDTIMEO) |
| } |
| |
| pub fn read_timeout(&self) -> io::Result<Option<Duration>> { |
| self.inner.timeout(c::SO_RCVTIMEO) |
| } |
| |
| pub fn write_timeout(&self) -> io::Result<Option<Duration>> { |
| self.inner.timeout(c::SO_SNDTIMEO) |
| } |
| |
| pub fn set_broadcast(&self, broadcast: bool) -> io::Result<()> { |
| setsockopt(&self.inner, c::SOL_SOCKET, c::SO_BROADCAST, broadcast as c_int) |
| } |
| |
| pub fn broadcast(&self) -> io::Result<bool> { |
| let raw: c_int = getsockopt(&self.inner, c::SOL_SOCKET, c::SO_BROADCAST)?; |
| Ok(raw != 0) |
| } |
| |
| pub fn set_multicast_loop_v4(&self, multicast_loop_v4: bool) -> io::Result<()> { |
| setsockopt(&self.inner, c::IPPROTO_IP, c::IP_MULTICAST_LOOP, multicast_loop_v4 as c_int) |
| } |
| |
| pub fn multicast_loop_v4(&self) -> io::Result<bool> { |
| let raw: c_int = getsockopt(&self.inner, c::IPPROTO_IP, c::IP_MULTICAST_LOOP)?; |
| Ok(raw != 0) |
| } |
| |
| pub fn set_multicast_ttl_v4(&self, multicast_ttl_v4: u32) -> io::Result<()> { |
| setsockopt(&self.inner, c::IPPROTO_IP, c::IP_MULTICAST_TTL, multicast_ttl_v4 as c_int) |
| } |
| |
| pub fn multicast_ttl_v4(&self) -> io::Result<u32> { |
| let raw: c_int = getsockopt(&self.inner, c::IPPROTO_IP, c::IP_MULTICAST_TTL)?; |
| Ok(raw as u32) |
| } |
| |
| pub fn set_multicast_loop_v6(&self, multicast_loop_v6: bool) -> io::Result<()> { |
| setsockopt(&self.inner, c::IPPROTO_IPV6, c::IPV6_MULTICAST_LOOP, multicast_loop_v6 as c_int) |
| } |
| |
| pub fn multicast_loop_v6(&self) -> io::Result<bool> { |
| let raw: c_int = getsockopt(&self.inner, c::IPPROTO_IPV6, c::IPV6_MULTICAST_LOOP)?; |
| Ok(raw != 0) |
| } |
| |
| pub fn join_multicast_v4(&self, multiaddr: &Ipv4Addr, interface: &Ipv4Addr) -> io::Result<()> { |
| let mreq = c::ip_mreq { |
| imr_multiaddr: *multiaddr.as_inner(), |
| imr_interface: *interface.as_inner(), |
| }; |
| setsockopt(&self.inner, c::IPPROTO_IP, c::IP_ADD_MEMBERSHIP, mreq) |
| } |
| |
| pub fn join_multicast_v6(&self, multiaddr: &Ipv6Addr, interface: u32) -> io::Result<()> { |
| let mreq = c::ipv6_mreq { |
| ipv6mr_multiaddr: *multiaddr.as_inner(), |
| ipv6mr_interface: to_ipv6mr_interface(interface), |
| }; |
| setsockopt(&self.inner, c::IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, mreq) |
| } |
| |
| pub fn leave_multicast_v4(&self, multiaddr: &Ipv4Addr, interface: &Ipv4Addr) -> io::Result<()> { |
| let mreq = c::ip_mreq { |
| imr_multiaddr: *multiaddr.as_inner(), |
| imr_interface: *interface.as_inner(), |
| }; |
| setsockopt(&self.inner, c::IPPROTO_IP, c::IP_DROP_MEMBERSHIP, mreq) |
| } |
| |
| pub fn leave_multicast_v6(&self, multiaddr: &Ipv6Addr, interface: u32) -> io::Result<()> { |
| let mreq = c::ipv6_mreq { |
| ipv6mr_multiaddr: *multiaddr.as_inner(), |
| ipv6mr_interface: to_ipv6mr_interface(interface), |
| }; |
| setsockopt(&self.inner, c::IPPROTO_IPV6, IPV6_DROP_MEMBERSHIP, mreq) |
| } |
| |
| pub fn set_ttl(&self, ttl: u32) -> io::Result<()> { |
| setsockopt(&self.inner, c::IPPROTO_IP, c::IP_TTL, ttl as c_int) |
| } |
| |
| pub fn ttl(&self) -> io::Result<u32> { |
| let raw: c_int = getsockopt(&self.inner, c::IPPROTO_IP, c::IP_TTL)?; |
| Ok(raw as u32) |
| } |
| |
| pub fn take_error(&self) -> io::Result<Option<io::Error>> { |
| self.inner.take_error() |
| } |
| |
| pub fn set_nonblocking(&self, nonblocking: bool) -> io::Result<()> { |
| self.inner.set_nonblocking(nonblocking) |
| } |
| |
| pub fn recv(&self, buf: &mut [u8]) -> io::Result<usize> { |
| self.inner.read(buf) |
| } |
| |
| pub fn peek(&self, buf: &mut [u8]) -> io::Result<usize> { |
| self.inner.peek(buf) |
| } |
| |
| pub fn send(&self, buf: &[u8]) -> io::Result<usize> { |
| let len = cmp::min(buf.len(), <wrlen_t>::max_value() as usize) as wrlen_t; |
| let ret = cvt(unsafe { |
| c::send(*self.inner.as_inner(), buf.as_ptr() as *const c_void, len, MSG_NOSIGNAL) |
| })?; |
| Ok(ret as usize) |
| } |
| |
| pub fn connect(&self, addr: io::Result<&SocketAddr>) -> io::Result<()> { |
| let (addrp, len) = addr?.into_inner(); |
| cvt_r(|| unsafe { c::connect(*self.inner.as_inner(), addrp, len) }).map(|_| ()) |
| } |
| } |
| |
| impl FromInner<Socket> for UdpSocket { |
| fn from_inner(socket: Socket) -> UdpSocket { |
| UdpSocket { inner: socket } |
| } |
| } |
| |
| impl fmt::Debug for UdpSocket { |
| fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { |
| let mut res = f.debug_struct("UdpSocket"); |
| |
| if let Ok(addr) = self.socket_addr() { |
| res.field("addr", &addr); |
| } |
| |
| let name = if cfg!(windows) { "socket" } else { "fd" }; |
| res.field(name, &self.inner.as_inner()).finish() |
| } |
| } |
| |
| #[cfg(test)] |
| mod tests { |
| use super::*; |
| use crate::collections::HashMap; |
| |
| #[test] |
| fn no_lookup_host_duplicates() { |
| let mut addrs = HashMap::new(); |
| let lh = match LookupHost::try_from(("localhost", 0)) { |
| Ok(lh) => lh, |
| Err(e) => panic!("couldn't resolve `localhost': {}", e), |
| }; |
| for sa in lh { |
| *addrs.entry(sa).or_insert(0) += 1; |
| } |
| assert_eq!( |
| addrs.iter().filter(|&(_, &v)| v > 1).collect::<Vec<_>>(), |
| vec![], |
| "There should be no duplicate localhost entries" |
| ); |
| } |
| } |
