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// Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![allow(dead_code)]
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use cmp;
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use ffi::CString;
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use fmt;
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use io::{self, Error, ErrorKind};
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use libc::{c_int, c_void};
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use mem;
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use net::{SocketAddr, Shutdown, Ipv4Addr, Ipv6Addr};
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use ptr;
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use sys::net::{cvt, cvt_r, cvt_gai, Socket, init, wrlen_t};
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use sys::net::netc as c;
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use sys_common::{AsInner, FromInner, IntoInner};
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use time::Duration;
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// IPV6 stuff does not seem to be supported on 3DS. TODO: Determine if that's true
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const IPV6_ADD_MEMBERSHIP: c_int = 0x0;
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const IPV6_DROP_MEMBERSHIP: c_int = 0x0;
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const IPV6_MULTICAST_LOOP: c_int = 0x0;
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const IPV6_V6ONLY: c_int = 0x0;
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// Neither are signals
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const MSG_NOSIGNAL: c_int = 0x0;
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// These constants are also currently missing from libctru. TODO: Find them?
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const SO_SNDTIMEO: c_int = 0x0;
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const SO_RCVTIMEO: c_int = 0x0;
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const SO_BROADCAST: c_int = 0x0;
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////////////////////////////////////////////////////////////////////////////////
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// sockaddr and misc bindings
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////////////////////////////////////////////////////////////////////////////////
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pub fn setsockopt<T>(sock: &Socket, opt: c_int, val: c_int,
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payload: T) -> io::Result<()> {
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unsafe {
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let payload = &payload as *const T as *const c_void;
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cvt(c::setsockopt(*sock.as_inner(), opt, val, payload,
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mem::size_of::<T>() as c::socklen_t))?;
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Ok(())
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}
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}
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pub fn getsockopt<T: Copy>(sock: &Socket, opt: c_int,
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val: c_int) -> io::Result<T> {
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unsafe {
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let mut slot: T = mem::zeroed();
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let mut len = mem::size_of::<T>() as c::socklen_t;
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cvt(c::getsockopt(*sock.as_inner(), opt, val,
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&mut slot as *mut _ as *mut _,
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&mut len))?;
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assert_eq!(len as usize, mem::size_of::<T>());
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Ok(slot)
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}
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}
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fn sockname<F>(f: F) -> io::Result<SocketAddr>
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where F: FnOnce(*mut c::sockaddr, *mut c::socklen_t) -> c_int
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{
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unsafe {
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let mut storage: c::sockaddr_storage = mem::zeroed();
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let mut len = mem::size_of_val(&storage) as c::socklen_t;
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cvt(f(&mut storage as *mut _ as *mut _, &mut len))?;
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sockaddr_to_addr(&storage, len as usize)
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}
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}
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pub fn sockaddr_to_addr(storage: &c::sockaddr_storage,
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len: usize) -> io::Result<SocketAddr> {
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match storage.ss_family as c_int {
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c::AF_INET => {
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assert!(len as usize >= mem::size_of::<c::sockaddr_in>());
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Ok(SocketAddr::V4(FromInner::from_inner(unsafe {
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*(storage as *const _ as *const c::sockaddr_in)
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})))
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}
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c::AF_INET6 => {
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assert!(len as usize >= mem::size_of::<c::sockaddr_in6>());
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Ok(SocketAddr::V6(FromInner::from_inner(unsafe {
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*(storage as *const _ as *const c::sockaddr_in6)
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})))
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}
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_ => {
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Err(Error::new(ErrorKind::InvalidInput, "invalid argument"))
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}
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}
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}
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#[cfg(target_os = "android")]
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fn to_ipv6mr_interface(value: u32) -> c_int {
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value as c_int
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}
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#[cfg(not(target_os = "android"))]
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fn to_ipv6mr_interface(value: u32) -> ::libc::c_uint {
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value as ::libc::c_uint
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}
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////////////////////////////////////////////////////////////////////////////////
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// get_host_addresses
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////////////////////////////////////////////////////////////////////////////////
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pub struct LookupHost {
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original: *mut c::addrinfo,
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cur: *mut c::addrinfo,
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}
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impl Iterator for LookupHost {
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type Item = SocketAddr;
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fn next(&mut self) -> Option<SocketAddr> {
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loop {
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unsafe {
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let cur = self.cur.as_ref()?;
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self.cur = cur.ai_next;
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match sockaddr_to_addr(mem::transmute(cur.ai_addr),
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cur.ai_addrlen as usize)
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{
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Ok(addr) => return Some(addr),
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Err(_) => continue,
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}
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}
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}
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}
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}
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unsafe impl Sync for LookupHost {}
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unsafe impl Send for LookupHost {}
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impl Drop for LookupHost {
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fn drop(&mut self) {
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unsafe { c::freeaddrinfo(self.original) }
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}
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}
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pub fn lookup_host(host: &str) -> io::Result<LookupHost> {
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init();
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let c_host = CString::new(host)?;
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let mut hints: c::addrinfo = unsafe { mem::zeroed() };
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hints.ai_socktype = c::SOCK_STREAM;
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let mut res = ptr::null_mut();
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unsafe {
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match cvt_gai(c::getaddrinfo(c_host.as_ptr() as *const _, ptr::null(), &hints, &mut res)) {
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Ok(_) => {
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Ok(LookupHost { original: res, cur: res })
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},
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#[cfg(target_env = "gnu")]
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Err(e) => {
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// If we're running glibc prior to version 2.26, the lookup
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// failure could be caused by caching a stale /etc/resolv.conf.
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// We need to call libc::res_init() to clear the cache. But we
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// shouldn't call it in on any other platform, because other
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// res_init implementations aren't thread-safe. See
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// https://github.com/rust-lang/rust/issues/41570 and
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// https://github.com/rust-lang/rust/issues/43592.
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use sys::net::res_init_if_glibc_before_2_26;
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let _ = res_init_if_glibc_before_2_26();
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Err(e)
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},
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// the cfg is needed here to avoid an "unreachable pattern" warning
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#[cfg(not(target_env = "gnu"))]
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Err(e) => Err(e),
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}
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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// TCP streams
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////////////////////////////////////////////////////////////////////////////////
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pub struct TcpStream {
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inner: Socket,
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}
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impl TcpStream {
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pub fn connect(addr: &SocketAddr) -> io::Result<TcpStream> {
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init();
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let sock = Socket::new(addr, c::SOCK_STREAM)?;
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let (addrp, len) = addr.into_inner();
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cvt_r(|| unsafe { c::connect(*sock.as_inner(), addrp, len) })?;
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Ok(TcpStream { inner: sock })
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}
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pub fn connect_timeout(addr: &SocketAddr, timeout: Duration) -> io::Result<TcpStream> {
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init();
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let sock = Socket::new(addr, c::SOCK_STREAM)?;
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sock.connect_timeout(addr, timeout)?;
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Ok(TcpStream { inner: sock })
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}
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pub fn socket(&self) -> &Socket { &self.inner }
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pub fn into_socket(self) -> Socket { self.inner }
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pub fn set_read_timeout(&self, dur: Option<Duration>) -> io::Result<()> {
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self.inner.set_timeout(dur, SO_RCVTIMEO)
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}
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pub fn set_write_timeout(&self, dur: Option<Duration>) -> io::Result<()> {
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self.inner.set_timeout(dur, SO_SNDTIMEO)
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}
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pub fn read_timeout(&self) -> io::Result<Option<Duration>> {
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self.inner.timeout(SO_RCVTIMEO)
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}
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pub fn write_timeout(&self) -> io::Result<Option<Duration>> {
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self.inner.timeout(SO_SNDTIMEO)
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}
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pub fn peek(&self, buf: &mut [u8]) -> io::Result<usize> {
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self.inner.peek(buf)
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}
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pub fn read(&self, buf: &mut [u8]) -> io::Result<usize> {
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self.inner.read(buf)
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}
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pub fn write(&self, buf: &[u8]) -> io::Result<usize> {
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let len = cmp::min(buf.len(), <wrlen_t>::max_value() as usize) as wrlen_t;
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let ret = cvt(unsafe {
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c::send(*self.inner.as_inner(),
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buf.as_ptr() as *const c_void,
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len,
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MSG_NOSIGNAL)
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})?;
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Ok(ret as usize)
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}
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pub fn peer_addr(&self) -> io::Result<SocketAddr> {
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sockname(|buf, len| unsafe {
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c::getpeername(*self.inner.as_inner(), buf, len)
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})
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}
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pub fn socket_addr(&self) -> io::Result<SocketAddr> {
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sockname(|buf, len| unsafe {
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c::getsockname(*self.inner.as_inner(), buf, len)
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})
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}
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pub fn shutdown(&self, how: Shutdown) -> io::Result<()> {
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self.inner.shutdown(how)
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}
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pub fn duplicate(&self) -> io::Result<TcpStream> {
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self.inner.duplicate().map(|s| TcpStream { inner: s })
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}
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pub fn set_nodelay(&self, nodelay: bool) -> io::Result<()> {
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self.inner.set_nodelay(nodelay)
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}
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pub fn nodelay(&self) -> io::Result<bool> {
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self.inner.nodelay()
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}
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pub fn set_ttl(&self, ttl: u32) -> io::Result<()> {
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setsockopt(&self.inner, c::IPPROTO_IP, c::IP_TTL, ttl as c_int)
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}
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pub fn ttl(&self) -> io::Result<u32> {
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let raw: c_int = getsockopt(&self.inner, c::IPPROTO_IP, c::IP_TTL)?;
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Ok(raw as u32)
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}
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pub fn take_error(&self) -> io::Result<Option<io::Error>> {
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self.inner.take_error()
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}
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pub fn set_nonblocking(&self, nonblocking: bool) -> io::Result<()> {
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self.inner.set_nonblocking(nonblocking)
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}
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}
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impl FromInner<Socket> for TcpStream {
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fn from_inner(socket: Socket) -> TcpStream {
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TcpStream { inner: socket }
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}
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}
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impl fmt::Debug for TcpStream {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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let mut res = f.debug_struct("TcpStream");
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if let Ok(addr) = self.socket_addr() {
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res.field("addr", &addr);
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}
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if let Ok(peer) = self.peer_addr() {
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res.field("peer", &peer);
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}
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let name = if cfg!(windows) {"socket"} else {"fd"};
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res.field(name, &self.inner.as_inner())
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.finish()
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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// TCP listeners
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////////////////////////////////////////////////////////////////////////////////
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pub struct TcpListener {
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inner: Socket,
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}
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impl TcpListener {
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pub fn bind(addr: &SocketAddr) -> io::Result<TcpListener> {
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init();
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let sock = Socket::new(addr, c::SOCK_STREAM)?;
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// On platforms with Berkeley-derived sockets, this allows
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// to quickly rebind a socket, without needing to wait for
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// the OS to clean up the previous one.
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if !cfg!(windows) {
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setsockopt(&sock, c::SOL_SOCKET, c::SO_REUSEADDR,
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1 as c_int)?;
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}
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// Bind our new socket
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let (addrp, len) = addr.into_inner();
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cvt(unsafe { c::bind(*sock.as_inner(), addrp, len as _) })?;
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// Start listening
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cvt(unsafe { c::listen(*sock.as_inner(), 128) })?;
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Ok(TcpListener { inner: sock })
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}
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pub fn socket(&self) -> &Socket { &self.inner }
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pub fn into_socket(self) -> Socket { self.inner }
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pub fn socket_addr(&self) -> io::Result<SocketAddr> {
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sockname(|buf, len| unsafe {
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c::getsockname(*self.inner.as_inner(), buf, len)
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})
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}
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pub fn accept(&self) -> io::Result<(TcpStream, SocketAddr)> {
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let mut storage: c::sockaddr_storage = unsafe { mem::zeroed() };
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let mut len = mem::size_of_val(&storage) as c::socklen_t;
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let sock = self.inner.accept(&mut storage as *mut _ as *mut _,
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&mut len)?;
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let addr = sockaddr_to_addr(&storage, len as usize)?;
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Ok((TcpStream { inner: sock, }, addr))
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}
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pub fn duplicate(&self) -> io::Result<TcpListener> {
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self.inner.duplicate().map(|s| TcpListener { inner: s })
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}
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pub fn set_ttl(&self, ttl: u32) -> io::Result<()> {
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|
|
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, 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, 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: &SocketAddr) -> io::Result<UdpSocket> {
|
|
|
|
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 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, SO_RCVTIMEO)
|
|
|
|
}
|
|
|
|
|
|
|
|
pub fn set_write_timeout(&self, dur: Option<Duration>) -> io::Result<()> {
|
|
|
|
self.inner.set_timeout(dur, SO_SNDTIMEO)
|
|
|
|
}
|
|
|
|
|
|
|
|
pub fn read_timeout(&self) -> io::Result<Option<Duration>> {
|
|
|
|
self.inner.timeout(SO_RCVTIMEO)
|
|
|
|
}
|
|
|
|
|
|
|
|
pub fn write_timeout(&self) -> io::Result<Option<Duration>> {
|
|
|
|
self.inner.timeout(SO_SNDTIMEO)
|
|
|
|
}
|
|
|
|
|
|
|
|
pub fn set_broadcast(&self, broadcast: bool) -> io::Result<()> {
|
|
|
|
setsockopt(&self.inner, c::SOL_SOCKET, SO_BROADCAST, broadcast as c_int)
|
|
|
|
}
|
|
|
|
|
|
|
|
pub fn broadcast(&self) -> io::Result<bool> {
|
|
|
|
let raw: c_int = getsockopt(&self.inner, c::SOL_SOCKET, 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, 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, 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: &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 collections::HashMap;
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn no_lookup_host_duplicates() {
|
|
|
|
let mut addrs = HashMap::new();
|
|
|
|
let lh = match lookup_host("localhost") {
|
|
|
|
Ok(lh) => lh,
|
|
|
|
Err(e) => panic!("couldn't resolve `localhost': {}", e)
|
|
|
|
};
|
|
|
|
let _na = lh.map(|sa| *addrs.entry(sa).or_insert(0) += 1).count();
|
|
|
|
assert!(addrs.values().filter(|&&v| v > 1).count() == 0);
|
|
|
|
}
|
|
|
|
}
|