<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source to the Rust file `libstd/net/udp.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>udp.rs.html -- source</title><link rel="stylesheet" type="text/css" href="../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../dark.css"><link rel="stylesheet" type="text/css" href="../../../light.css" id="themeStyle"><script src="../../../storage.js"></script><link rel="shortcut icon" href="https://doc.rust-lang.org/favicon.ico"></head><body class="rustdoc source"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../../../std/index.html'><img src='https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png' alt='logo' width='100'></a></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><input class="search-input" name="search" autocomplete="off" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><a id="settings-menu" href="../../../settings.html"><img src="../../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><pre class="line-numbers"><span id="1"> 1</span>
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</pre><pre class="rust ">
<span class="comment">// Copyright 2015 The Rust Project Developers. See the COPYRIGHT</span>
<span class="comment">// file at the top-level directory of this distribution and at</span>
<span class="comment">// http://rust-lang.org/COPYRIGHT.</span>
<span class="comment">//</span>
<span class="comment">// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or</span>
<span class="comment">// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license</span>
<span class="comment">// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your</span>
<span class="comment">// option. This file may not be copied, modified, or distributed</span>
<span class="comment">// except according to those terms.</span>
<span class="kw">use</span> <span class="ident">fmt</span>;
<span class="kw">use</span> <span class="ident">io</span>::{<span class="self">self</span>, <span class="ident">Error</span>, <span class="ident">ErrorKind</span>};
<span class="kw">use</span> <span class="ident">net</span>::{<span class="ident">ToSocketAddrs</span>, <span class="ident">SocketAddr</span>, <span class="ident">Ipv4Addr</span>, <span class="ident">Ipv6Addr</span>};
<span class="kw">use</span> <span class="ident">sys_common</span>::<span class="ident">net</span> <span class="kw">as</span> <span class="ident">net_imp</span>;
<span class="kw">use</span> <span class="ident">sys_common</span>::{<span class="ident">AsInner</span>, <span class="ident">FromInner</span>, <span class="ident">IntoInner</span>};
<span class="kw">use</span> <span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="doccomment">/// A UDP socket.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// After creating a `UdpSocket` by [`bind`]ing it to a socket address, data can be</span>
<span class="doccomment">/// [sent to] and [received from] any other socket address.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Although UDP is a connectionless protocol, this implementation provides an interface</span>
<span class="doccomment">/// to set an address where data should be sent and received from. After setting a remote</span>
<span class="doccomment">/// address with [`connect`], data can be sent to and received from that address with</span>
<span class="doccomment">/// [`send`] and [`recv`].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// As stated in the User Datagram Protocol's specification in [IETF RFC 768], UDP is</span>
<span class="doccomment">/// an unordered, unreliable protocol; refer to [`TcpListener`] and [`TcpStream`] for TCP</span>
<span class="doccomment">/// primitives.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`bind`]: #method.bind</span>
<span class="doccomment">/// [`connect`]: #method.connect</span>
<span class="doccomment">/// [IETF RFC 768]: https://tools.ietf.org/html/rfc768</span>
<span class="doccomment">/// [`recv`]: #method.recv</span>
<span class="doccomment">/// [received from]: #method.recv_from</span>
<span class="doccomment">/// [`send`]: #method.send</span>
<span class="doccomment">/// [sent to]: #method.send_to</span>
<span class="doccomment">/// [`TcpListener`]: ../../std/net/struct.TcpListener.html</span>
<span class="doccomment">/// [`TcpStream`]: ../../std/net/struct.TcpStream.html</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// fn main() -> std::io::Result<()> {</span>
<span class="doccomment">/// {</span>
<span class="doccomment">/// let mut socket = UdpSocket::bind("127.0.0.1:34254")?;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// // Receives a single datagram message on the socket. If `buf` is too small to hold</span>
<span class="doccomment">/// // the message, it will be cut off.</span>
<span class="doccomment">/// let mut buf = [0; 10];</span>
<span class="doccomment">/// let (amt, src) = socket.recv_from(&mut buf)?;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// // Redeclare `buf` as slice of the received data and send reverse data back to origin.</span>
<span class="doccomment">/// let buf = &mut buf[..amt];</span>
<span class="doccomment">/// buf.reverse();</span>
<span class="doccomment">/// socket.send_to(buf, &src)?;</span>
<span class="doccomment">/// } // the socket is closed here</span>
<span class="doccomment">/// Ok(())</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">UdpSocket</span>(<span class="ident">net_imp</span>::<span class="ident">UdpSocket</span>);
<span class="kw">impl</span> <span class="ident">UdpSocket</span> {
<span class="doccomment">/// Creates a UDP socket from the given address.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The address type can be any implementor of [`ToSocketAddrs`] trait. See</span>
<span class="doccomment">/// its documentation for concrete examples.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// If `addr` yields multiple addresses, `bind` will be attempted with</span>
<span class="doccomment">/// each of the addresses until one succeeds and returns the socket. If none</span>
<span class="doccomment">/// of the addresses succeed in creating a socket, the error returned from</span>
<span class="doccomment">/// the last attempt (the last address) is returned.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`ToSocketAddrs`]: ../../std/net/trait.ToSocketAddrs.html</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Create a UDP socket bound to `127.0.0.1:3400`:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:3400").expect("couldn't bind to address");</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Create a UDP socket bound to `127.0.0.1:3400`. If the socket cannot be</span>
<span class="doccomment">/// bound to that address, create a UDP socket bound to `127.0.0.1:3401`:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::{SocketAddr, UdpSocket};</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let addrs = [</span>
<span class="doccomment">/// SocketAddr::from(([127, 0, 0, 1], 3400)),</span>
<span class="doccomment">/// SocketAddr::from(([127, 0, 0, 1], 3401)),</span>
<span class="doccomment">/// ];</span>
<span class="doccomment">/// let socket = UdpSocket::bind(&addrs[..]).expect("couldn't bind to address");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">bind</span><span class="op"><</span><span class="ident">A</span>: <span class="ident">ToSocketAddrs</span><span class="op">></span>(<span class="ident">addr</span>: <span class="ident">A</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">UdpSocket</span><span class="op">></span> {
<span class="kw">super</span>::<span class="ident">each_addr</span>(<span class="ident">addr</span>, <span class="ident">net_imp</span>::<span class="ident">UdpSocket</span>::<span class="ident">bind</span>).<span class="ident">map</span>(<span class="ident">UdpSocket</span>)
}
<span class="doccomment">/// Receives a single datagram message on the socket. On success, returns the number</span>
<span class="doccomment">/// of bytes read and the origin.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The function must be called with valid byte array `buf` of sufficient size to</span>
<span class="doccomment">/// hold the message bytes. If a message is too long to fit in the supplied buffer,</span>
<span class="doccomment">/// excess bytes may be discarded.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// let mut buf = [0; 10];</span>
<span class="doccomment">/// let (number_of_bytes, src_addr) = socket.recv_from(&mut buf)</span>
<span class="doccomment">/// .expect("Didn't receive data");</span>
<span class="doccomment">/// let filled_buf = &mut buf[..number_of_bytes];</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">recv_from</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">buf</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> [<span class="ident">u8</span>]) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>(<span class="ident">usize</span>, <span class="ident">SocketAddr</span>)<span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">recv_from</span>(<span class="ident">buf</span>)
}
<span class="doccomment">/// Receives a single datagram message on the socket, without removing it from the</span>
<span class="doccomment">/// queue. On success, returns the number of bytes read and the origin.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The function must be called with valid byte array `buf` of sufficient size to</span>
<span class="doccomment">/// hold the message bytes. If a message is too long to fit in the supplied buffer,</span>
<span class="doccomment">/// excess bytes may be discarded.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Successive calls return the same data. This is accomplished by passing</span>
<span class="doccomment">/// `MSG_PEEK` as a flag to the underlying `recvfrom` system call.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Do not use this function to implement busy waiting, instead use `libc::poll` to</span>
<span class="doccomment">/// synchronize IO events on one or more sockets.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// let mut buf = [0; 10];</span>
<span class="doccomment">/// let (number_of_bytes, src_addr) = socket.peek_from(&mut buf)</span>
<span class="doccomment">/// .expect("Didn't receive data");</span>
<span class="doccomment">/// let filled_buf = &mut buf[..number_of_bytes];</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"peek"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.18.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">peek_from</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">buf</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> [<span class="ident">u8</span>]) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>(<span class="ident">usize</span>, <span class="ident">SocketAddr</span>)<span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">peek_from</span>(<span class="ident">buf</span>)
}
<span class="doccomment">/// Sends data on the socket to the given address. On success, returns the</span>
<span class="doccomment">/// number of bytes written.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Address type can be any implementor of [`ToSocketAddrs`] trait. See its</span>
<span class="doccomment">/// documentation for concrete examples.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// It is possible for `addr` to yield multiple addresses, but `send_to`</span>
<span class="doccomment">/// will only send data to the first address yielded by `addr`.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This will return an error when the IP version of the local socket</span>
<span class="doccomment">/// does not match that returned from [`ToSocketAddrs`].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// See <https://github.com/rust-lang/rust/issues/34202> for more details.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`ToSocketAddrs`]: ../../std/net/trait.ToSocketAddrs.html</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// socket.send_to(&[0; 10], "127.0.0.1:4242").expect("couldn't send data");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">send_to</span><span class="op"><</span><span class="ident">A</span>: <span class="ident">ToSocketAddrs</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">buf</span>: <span class="kw-2">&</span>[<span class="ident">u8</span>], <span class="ident">addr</span>: <span class="ident">A</span>)
<span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> {
<span class="kw">match</span> <span class="ident">addr</span>.<span class="ident">to_socket_addrs</span>()<span class="question-mark">?</span>.<span class="ident">next</span>() {
<span class="prelude-val">Some</span>(<span class="ident">addr</span>) <span class="op">=></span> <span class="self">self</span>.<span class="number">0</span>.<span class="ident">send_to</span>(<span class="ident">buf</span>, <span class="kw-2">&</span><span class="ident">addr</span>),
<span class="prelude-val">None</span> <span class="op">=></span> <span class="prelude-val">Err</span>(<span class="ident">Error</span>::<span class="ident">new</span>(<span class="ident">ErrorKind</span>::<span class="ident">InvalidInput</span>,
<span class="string">"no addresses to send data to"</span>)),
}
}
<span class="doccomment">/// Returns the socket address that this socket was created from.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::{Ipv4Addr, SocketAddr, SocketAddrV4, UdpSocket};</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// assert_eq!(socket.local_addr().unwrap(),</span>
<span class="doccomment">/// SocketAddr::V4(SocketAddrV4::new(Ipv4Addr::new(127, 0, 0, 1), 34254)));</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">local_addr</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">SocketAddr</span><span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">socket_addr</span>()
}
<span class="doccomment">/// Creates a new independently owned handle to the underlying socket.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The returned `UdpSocket` is a reference to the same socket that this</span>
<span class="doccomment">/// object references. Both handles will read and write the same port, and</span>
<span class="doccomment">/// options set on one socket will be propagated to the other.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// let socket_clone = socket.try_clone().expect("couldn't clone the socket");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">try_clone</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">UdpSocket</span><span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">duplicate</span>().<span class="ident">map</span>(<span class="ident">UdpSocket</span>)
}
<span class="doccomment">/// Sets the read timeout to the timeout specified.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// If the value specified is [`None`], then [`read`] calls will block</span>
<span class="doccomment">/// indefinitely. An [`Err`] is returned if the zero [`Duration`] is</span>
<span class="doccomment">/// passed to this method.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Platform-specific behavior</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Platforms may return a different error code whenever a read times out as</span>
<span class="doccomment">/// a result of setting this option. For example Unix typically returns an</span>
<span class="doccomment">/// error of the kind [`WouldBlock`], but Windows may return [`TimedOut`].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`None`]: ../../std/option/enum.Option.html#variant.None</span>
<span class="doccomment">/// [`Err`]: ../../std/result/enum.Result.html#variant.Err</span>
<span class="doccomment">/// [`read`]: ../../std/io/trait.Read.html#tymethod.read</span>
<span class="doccomment">/// [`Duration`]: ../../std/time/struct.Duration.html</span>
<span class="doccomment">/// [`WouldBlock`]: ../../std/io/enum.ErrorKind.html#variant.WouldBlock</span>
<span class="doccomment">/// [`TimedOut`]: ../../std/io/enum.ErrorKind.html#variant.TimedOut</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// socket.set_read_timeout(None).expect("set_read_timeout call failed");</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// An [`Err`] is returned if the zero [`Duration`] is passed to this</span>
<span class="doccomment">/// method:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::io;</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">/// use std::time::Duration;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").unwrap();</span>
<span class="doccomment">/// let result = socket.set_read_timeout(Some(Duration::new(0, 0)));</span>
<span class="doccomment">/// let err = result.unwrap_err();</span>
<span class="doccomment">/// assert_eq!(err.kind(), io::ErrorKind::InvalidInput)</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"socket_timeout"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.4.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_read_timeout</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">dur</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Duration</span><span class="op">></span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">set_read_timeout</span>(<span class="ident">dur</span>)
}
<span class="doccomment">/// Sets the write timeout to the timeout specified.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// If the value specified is [`None`], then [`write`] calls will block</span>
<span class="doccomment">/// indefinitely. An [`Err`] is returned if the zero [`Duration`] is</span>
<span class="doccomment">/// passed to this method.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Platform-specific behavior</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Platforms may return a different error code whenever a write times out</span>
<span class="doccomment">/// as a result of setting this option. For example Unix typically returns</span>
<span class="doccomment">/// an error of the kind [`WouldBlock`], but Windows may return [`TimedOut`].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`None`]: ../../std/option/enum.Option.html#variant.None</span>
<span class="doccomment">/// [`Err`]: ../../std/result/enum.Result.html#variant.Err</span>
<span class="doccomment">/// [`write`]: ../../std/io/trait.Write.html#tymethod.write</span>
<span class="doccomment">/// [`Duration`]: ../../std/time/struct.Duration.html</span>
<span class="doccomment">/// [`WouldBlock`]: ../../std/io/enum.ErrorKind.html#variant.WouldBlock</span>
<span class="doccomment">/// [`TimedOut`]: ../../std/io/enum.ErrorKind.html#variant.TimedOut</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// socket.set_write_timeout(None).expect("set_write_timeout call failed");</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// An [`Err`] is returned if the zero [`Duration`] is passed to this</span>
<span class="doccomment">/// method:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::io;</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">/// use std::time::Duration;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").unwrap();</span>
<span class="doccomment">/// let result = socket.set_write_timeout(Some(Duration::new(0, 0)));</span>
<span class="doccomment">/// let err = result.unwrap_err();</span>
<span class="doccomment">/// assert_eq!(err.kind(), io::ErrorKind::InvalidInput)</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"socket_timeout"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.4.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_write_timeout</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">dur</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Duration</span><span class="op">></span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">set_write_timeout</span>(<span class="ident">dur</span>)
}
<span class="doccomment">/// Returns the read timeout of this socket.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// If the timeout is [`None`], then [`read`] calls will block indefinitely.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`None`]: ../../std/option/enum.Option.html#variant.None</span>
<span class="doccomment">/// [`read`]: ../../std/io/trait.Read.html#tymethod.read</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// socket.set_read_timeout(None).expect("set_read_timeout call failed");</span>
<span class="doccomment">/// assert_eq!(socket.read_timeout().unwrap(), None);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"socket_timeout"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.4.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">read_timeout</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Duration</span><span class="op">>></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">read_timeout</span>()
}
<span class="doccomment">/// Returns the write timeout of this socket.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// If the timeout is [`None`], then [`write`] calls will block indefinitely.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`None`]: ../../std/option/enum.Option.html#variant.None</span>
<span class="doccomment">/// [`write`]: ../../std/io/trait.Write.html#tymethod.write</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// socket.set_write_timeout(None).expect("set_write_timeout call failed");</span>
<span class="doccomment">/// assert_eq!(socket.write_timeout().unwrap(), None);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"socket_timeout"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.4.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">write_timeout</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Duration</span><span class="op">>></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">write_timeout</span>()
}
<span class="doccomment">/// Sets the value of the `SO_BROADCAST` option for this socket.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// When enabled, this socket is allowed to send packets to a broadcast</span>
<span class="doccomment">/// address.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// socket.set_broadcast(false).expect("set_broadcast call failed");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"net2_mutators"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_broadcast</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">broadcast</span>: <span class="ident">bool</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">set_broadcast</span>(<span class="ident">broadcast</span>)
}
<span class="doccomment">/// Gets the value of the `SO_BROADCAST` option for this socket.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// For more information about this option, see</span>
<span class="doccomment">/// [`set_broadcast`][link].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [link]: #method.set_broadcast</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// socket.set_broadcast(false).expect("set_broadcast call failed");</span>
<span class="doccomment">/// assert_eq!(socket.broadcast().unwrap(), false);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"net2_mutators"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">broadcast</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">bool</span><span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">broadcast</span>()
}
<span class="doccomment">/// Sets the value of the `IP_MULTICAST_LOOP` option for this socket.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// If enabled, multicast packets will be looped back to the local socket.</span>
<span class="doccomment">/// Note that this may not have any affect on IPv6 sockets.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// socket.set_multicast_loop_v4(false).expect("set_multicast_loop_v4 call failed");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"net2_mutators"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_multicast_loop_v4</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">multicast_loop_v4</span>: <span class="ident">bool</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">set_multicast_loop_v4</span>(<span class="ident">multicast_loop_v4</span>)
}
<span class="doccomment">/// Gets the value of the `IP_MULTICAST_LOOP` option for this socket.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// For more information about this option, see</span>
<span class="doccomment">/// [`set_multicast_loop_v4`][link].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [link]: #method.set_multicast_loop_v4</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// socket.set_multicast_loop_v4(false).expect("set_multicast_loop_v4 call failed");</span>
<span class="doccomment">/// assert_eq!(socket.multicast_loop_v4().unwrap(), false);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"net2_mutators"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">multicast_loop_v4</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">bool</span><span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">multicast_loop_v4</span>()
}
<span class="doccomment">/// Sets the value of the `IP_MULTICAST_TTL` option for this socket.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Indicates the time-to-live value of outgoing multicast packets for</span>
<span class="doccomment">/// this socket. The default value is 1 which means that multicast packets</span>
<span class="doccomment">/// don't leave the local network unless explicitly requested.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Note that this may not have any affect on IPv6 sockets.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// socket.set_multicast_ttl_v4(42).expect("set_multicast_ttl_v4 call failed");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"net2_mutators"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_multicast_ttl_v4</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">multicast_ttl_v4</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">set_multicast_ttl_v4</span>(<span class="ident">multicast_ttl_v4</span>)
}
<span class="doccomment">/// Gets the value of the `IP_MULTICAST_TTL` option for this socket.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// For more information about this option, see</span>
<span class="doccomment">/// [`set_multicast_ttl_v4`][link].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [link]: #method.set_multicast_ttl_v4</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// socket.set_multicast_ttl_v4(42).expect("set_multicast_ttl_v4 call failed");</span>
<span class="doccomment">/// assert_eq!(socket.multicast_ttl_v4().unwrap(), 42);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"net2_mutators"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">multicast_ttl_v4</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">u32</span><span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">multicast_ttl_v4</span>()
}
<span class="doccomment">/// Sets the value of the `IPV6_MULTICAST_LOOP` option for this socket.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Controls whether this socket sees the multicast packets it sends itself.</span>
<span class="doccomment">/// Note that this may not have any affect on IPv4 sockets.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// socket.set_multicast_loop_v6(false).expect("set_multicast_loop_v6 call failed");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"net2_mutators"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_multicast_loop_v6</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">multicast_loop_v6</span>: <span class="ident">bool</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">set_multicast_loop_v6</span>(<span class="ident">multicast_loop_v6</span>)
}
<span class="doccomment">/// Gets the value of the `IPV6_MULTICAST_LOOP` option for this socket.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// For more information about this option, see</span>
<span class="doccomment">/// [`set_multicast_loop_v6`][link].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [link]: #method.set_multicast_loop_v6</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// socket.set_multicast_loop_v6(false).expect("set_multicast_loop_v6 call failed");</span>
<span class="doccomment">/// assert_eq!(socket.multicast_loop_v6().unwrap(), false);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"net2_mutators"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">multicast_loop_v6</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">bool</span><span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">multicast_loop_v6</span>()
}
<span class="doccomment">/// Sets the value for the `IP_TTL` option on this socket.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This value sets the time-to-live field that is used in every packet sent</span>
<span class="doccomment">/// from this socket.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// socket.set_ttl(42).expect("set_ttl call failed");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"net2_mutators"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_ttl</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">ttl</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">set_ttl</span>(<span class="ident">ttl</span>)
}
<span class="doccomment">/// Gets the value of the `IP_TTL` option for this socket.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// For more information about this option, see [`set_ttl`][link].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [link]: #method.set_ttl</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// socket.set_ttl(42).expect("set_ttl call failed");</span>
<span class="doccomment">/// assert_eq!(socket.ttl().unwrap(), 42);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"net2_mutators"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">ttl</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">u32</span><span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">ttl</span>()
}
<span class="doccomment">/// Executes an operation of the `IP_ADD_MEMBERSHIP` type.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This function specifies a new multicast group for this socket to join.</span>
<span class="doccomment">/// The address must be a valid multicast address, and `interface` is the</span>
<span class="doccomment">/// address of the local interface with which the system should join the</span>
<span class="doccomment">/// multicast group. If it's equal to `INADDR_ANY` then an appropriate</span>
<span class="doccomment">/// interface is chosen by the system.</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"net2_mutators"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">join_multicast_v4</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">multiaddr</span>: <span class="kw-2">&</span><span class="ident">Ipv4Addr</span>, <span class="ident">interface</span>: <span class="kw-2">&</span><span class="ident">Ipv4Addr</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">join_multicast_v4</span>(<span class="ident">multiaddr</span>, <span class="ident">interface</span>)
}
<span class="doccomment">/// Executes an operation of the `IPV6_ADD_MEMBERSHIP` type.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This function specifies a new multicast group for this socket to join.</span>
<span class="doccomment">/// The address must be a valid multicast address, and `interface` is the</span>
<span class="doccomment">/// index of the interface to join/leave (or 0 to indicate any interface).</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"net2_mutators"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">join_multicast_v6</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">multiaddr</span>: <span class="kw-2">&</span><span class="ident">Ipv6Addr</span>, <span class="ident">interface</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">join_multicast_v6</span>(<span class="ident">multiaddr</span>, <span class="ident">interface</span>)
}
<span class="doccomment">/// Executes an operation of the `IP_DROP_MEMBERSHIP` type.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// For more information about this option, see</span>
<span class="doccomment">/// [`join_multicast_v4`][link].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [link]: #method.join_multicast_v4</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"net2_mutators"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">leave_multicast_v4</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">multiaddr</span>: <span class="kw-2">&</span><span class="ident">Ipv4Addr</span>, <span class="ident">interface</span>: <span class="kw-2">&</span><span class="ident">Ipv4Addr</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">leave_multicast_v4</span>(<span class="ident">multiaddr</span>, <span class="ident">interface</span>)
}
<span class="doccomment">/// Executes an operation of the `IPV6_DROP_MEMBERSHIP` type.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// For more information about this option, see</span>
<span class="doccomment">/// [`join_multicast_v6`][link].</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [link]: #method.join_multicast_v6</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"net2_mutators"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">leave_multicast_v6</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">multiaddr</span>: <span class="kw-2">&</span><span class="ident">Ipv6Addr</span>, <span class="ident">interface</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">leave_multicast_v6</span>(<span class="ident">multiaddr</span>, <span class="ident">interface</span>)
}
<span class="doccomment">/// Get the value of the `SO_ERROR` option on this socket.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This will retrieve the stored error in the underlying socket, clearing</span>
<span class="doccomment">/// the field in the process. This can be useful for checking errors between</span>
<span class="doccomment">/// calls.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// match socket.take_error() {</span>
<span class="doccomment">/// Ok(Some(error)) => println!("UdpSocket error: {:?}", error),</span>
<span class="doccomment">/// Ok(None) => println!("No error"),</span>
<span class="doccomment">/// Err(error) => println!("UdpSocket.take_error failed: {:?}", error),</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"net2_mutators"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">take_error</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">io</span>::<span class="ident">Error</span><span class="op">>></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">take_error</span>()
}
<span class="doccomment">/// Connects this UDP socket to a remote address, allowing the `send` and</span>
<span class="doccomment">/// `recv` syscalls to be used to send data and also applies filters to only</span>
<span class="doccomment">/// receive data from the specified address.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// If `addr` yields multiple addresses, `connect` will be attempted with</span>
<span class="doccomment">/// each of the addresses until the underlying OS function returns no</span>
<span class="doccomment">/// error. Note that usually, a successful `connect` call does not specify</span>
<span class="doccomment">/// that there is a remote server listening on the port, rather, such an</span>
<span class="doccomment">/// error would only be detected after the first send. If the OS returns an</span>
<span class="doccomment">/// error for each of the specified addresses, the error returned from the</span>
<span class="doccomment">/// last connection attempt (the last address) is returned.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Create a UDP socket bound to `127.0.0.1:3400` and connect the socket to</span>
<span class="doccomment">/// `127.0.0.1:8080`:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:3400").expect("couldn't bind to address");</span>
<span class="doccomment">/// socket.connect("127.0.0.1:8080").expect("connect function failed");</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Unlike in the TCP case, passing an array of addresses to the `connect`</span>
<span class="doccomment">/// function of a UDP socket is not a useful thing to do: The OS will be</span>
<span class="doccomment">/// unable to determine whether something is listening on the remote</span>
<span class="doccomment">/// address without the application sending data.</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"net2_mutators"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">connect</span><span class="op"><</span><span class="ident">A</span>: <span class="ident">ToSocketAddrs</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">addr</span>: <span class="ident">A</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="kw">super</span>::<span class="ident">each_addr</span>(<span class="ident">addr</span>, <span class="op">|</span><span class="ident">addr</span><span class="op">|</span> <span class="self">self</span>.<span class="number">0</span>.<span class="ident">connect</span>(<span class="ident">addr</span>))
}
<span class="doccomment">/// Sends data on the socket to the remote address to which it is connected.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The [`connect`] method will connect this socket to a remote address. This</span>
<span class="doccomment">/// method will fail if the socket is not connected.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`connect`]: #method.connect</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// socket.connect("127.0.0.1:8080").expect("connect function failed");</span>
<span class="doccomment">/// socket.send(&[0, 1, 2]).expect("couldn't send message");</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"net2_mutators"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">send</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">buf</span>: <span class="kw-2">&</span>[<span class="ident">u8</span>]) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">send</span>(<span class="ident">buf</span>)
}
<span class="doccomment">/// Receives a single datagram message on the socket from the remote address to</span>
<span class="doccomment">/// which it is connected. On success, returns the number of bytes read.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The function must be called with valid byte array `buf` of sufficient size to</span>
<span class="doccomment">/// hold the message bytes. If a message is too long to fit in the supplied buffer,</span>
<span class="doccomment">/// excess bytes may be discarded.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The [`connect`] method will connect this socket to a remote address. This</span>
<span class="doccomment">/// method will fail if the socket is not connected.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`connect`]: #method.connect</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// socket.connect("127.0.0.1:8080").expect("connect function failed");</span>
<span class="doccomment">/// let mut buf = [0; 10];</span>
<span class="doccomment">/// match socket.recv(&mut buf) {</span>
<span class="doccomment">/// Ok(received) => println!("received {} bytes {:?}", received, &buf[..received]),</span>
<span class="doccomment">/// Err(e) => println!("recv function failed: {:?}", e),</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"net2_mutators"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">recv</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">buf</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> [<span class="ident">u8</span>]) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">recv</span>(<span class="ident">buf</span>)
}
<span class="doccomment">/// Receives single datagram on the socket from the remote address to which it is</span>
<span class="doccomment">/// connected, without removing the message from input queue. On success, returns</span>
<span class="doccomment">/// the number of bytes peeked.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The function must be called with valid byte array `buf` of sufficient size to</span>
<span class="doccomment">/// hold the message bytes. If a message is too long to fit in the supplied buffer,</span>
<span class="doccomment">/// excess bytes may be discarded.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Successive calls return the same data. This is accomplished by passing</span>
<span class="doccomment">/// `MSG_PEEK` as a flag to the underlying `recv` system call.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Do not use this function to implement busy waiting, instead use `libc::poll` to</span>
<span class="doccomment">/// synchronize IO events on one or more sockets.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// The [`connect`] method will connect this socket to a remote address. This</span>
<span class="doccomment">/// method will fail if the socket is not connected.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`connect`]: #method.connect</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Errors</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This method will fail if the socket is not connected. The `connect` method</span>
<span class="doccomment">/// will connect this socket to a remote address.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:34254").expect("couldn't bind to address");</span>
<span class="doccomment">/// socket.connect("127.0.0.1:8080").expect("connect function failed");</span>
<span class="doccomment">/// let mut buf = [0; 10];</span>
<span class="doccomment">/// match socket.peek(&mut buf) {</span>
<span class="doccomment">/// Ok(received) => println!("received {} bytes", received),</span>
<span class="doccomment">/// Err(e) => println!("peek function failed: {:?}", e),</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"peek"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.18.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">peek</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">buf</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> [<span class="ident">u8</span>]) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">usize</span><span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">peek</span>(<span class="ident">buf</span>)
}
<span class="doccomment">/// Moves this UDP socket into or out of nonblocking mode.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This will result in `recv`, `recv_from`, `send`, and `send_to`</span>
<span class="doccomment">/// operations becoming nonblocking, i.e. immediately returning from their</span>
<span class="doccomment">/// calls. If the IO operation is successful, `Ok` is returned and no</span>
<span class="doccomment">/// further action is required. If the IO operation could not be completed</span>
<span class="doccomment">/// and needs to be retried, an error with kind</span>
<span class="doccomment">/// [`io::ErrorKind::WouldBlock`] is returned.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// On Unix platforms, calling this method corresponds to calling `fcntl`</span>
<span class="doccomment">/// `FIONBIO`. On Windows calling this method corresponds to calling</span>
<span class="doccomment">/// `ioctlsocket` `FIONBIO`.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`io::ErrorKind::WouldBlock`]: ../io/enum.ErrorKind.html#variant.WouldBlock</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Create a UDP socket bound to `127.0.0.1:7878` and read bytes in</span>
<span class="doccomment">/// nonblocking mode:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use std::io;</span>
<span class="doccomment">/// use std::net::UdpSocket;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let socket = UdpSocket::bind("127.0.0.1:7878").unwrap();</span>
<span class="doccomment">/// socket.set_nonblocking(true).unwrap();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # fn wait_for_fd() { unimplemented!() }</span>
<span class="doccomment">/// let mut buf = [0; 10];</span>
<span class="doccomment">/// let (num_bytes_read, _) = loop {</span>
<span class="doccomment">/// match socket.recv_from(&mut buf) {</span>
<span class="doccomment">/// Ok(n) => break n,</span>
<span class="doccomment">/// Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {</span>
<span class="doccomment">/// // wait until network socket is ready, typically implemented</span>
<span class="doccomment">/// // via platform-specific APIs such as epoll or IOCP</span>
<span class="doccomment">/// wait_for_fd();</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// Err(e) => panic!("encountered IO error: {}", e),</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// };</span>
<span class="doccomment">/// println!("bytes: {:?}", &buf[..num_bytes_read]);</span>
<span class="doccomment">/// ```</span>
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"net2_mutators"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.9.0"</span>)]</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_nonblocking</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">nonblocking</span>: <span class="ident">bool</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">set_nonblocking</span>(<span class="ident">nonblocking</span>)
}
}
<span class="kw">impl</span> <span class="ident">AsInner</span><span class="op"><</span><span class="ident">net_imp</span>::<span class="ident">UdpSocket</span><span class="op">></span> <span class="kw">for</span> <span class="ident">UdpSocket</span> {
<span class="kw">fn</span> <span class="ident">as_inner</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">net_imp</span>::<span class="ident">UdpSocket</span> { <span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span> }
}
<span class="kw">impl</span> <span class="ident">FromInner</span><span class="op"><</span><span class="ident">net_imp</span>::<span class="ident">UdpSocket</span><span class="op">></span> <span class="kw">for</span> <span class="ident">UdpSocket</span> {
<span class="kw">fn</span> <span class="ident">from_inner</span>(<span class="ident">inner</span>: <span class="ident">net_imp</span>::<span class="ident">UdpSocket</span>) <span class="op">-></span> <span class="ident">UdpSocket</span> { <span class="ident">UdpSocket</span>(<span class="ident">inner</span>) }
}
<span class="kw">impl</span> <span class="ident">IntoInner</span><span class="op"><</span><span class="ident">net_imp</span>::<span class="ident">UdpSocket</span><span class="op">></span> <span class="kw">for</span> <span class="ident">UdpSocket</span> {
<span class="kw">fn</span> <span class="ident">into_inner</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">net_imp</span>::<span class="ident">UdpSocket</span> { <span class="self">self</span>.<span class="number">0</span> }
}
<span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"rust1"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.0.0"</span>)]</span>
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">UdpSocket</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">fmt</span>(<span class="ident">f</span>)
}
}
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">all</span>(<span class="ident">test</span>, <span class="ident">not</span>(<span class="ident">any</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"cloudabi"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"emscripten"</span>))))]</span>
<span class="kw">mod</span> <span class="ident">tests</span> {
<span class="kw">use</span> <span class="ident">io</span>::<span class="ident">ErrorKind</span>;
<span class="kw">use</span> <span class="ident">net</span>::<span class="kw-2">*</span>;
<span class="kw">use</span> <span class="ident">net</span>::<span class="ident">test</span>::{<span class="ident">next_test_ip4</span>, <span class="ident">next_test_ip6</span>};
<span class="kw">use</span> <span class="ident">sync</span>::<span class="ident">mpsc</span>::<span class="ident">channel</span>;
<span class="kw">use</span> <span class="ident">sys_common</span>::<span class="ident">AsInner</span>;
<span class="kw">use</span> <span class="ident">time</span>::{<span class="ident">Instant</span>, <span class="ident">Duration</span>};
<span class="kw">use</span> <span class="ident">thread</span>;
<span class="kw">fn</span> <span class="ident">each_ip</span>(<span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">FnMut</span>(<span class="ident">SocketAddr</span>, <span class="ident">SocketAddr</span>)) {
<span class="ident">f</span>(<span class="ident">next_test_ip4</span>(), <span class="ident">next_test_ip4</span>());
<span class="ident">f</span>(<span class="ident">next_test_ip6</span>(), <span class="ident">next_test_ip6</span>());
}
<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">t</span> {
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">e</span>:<span class="ident">expr</span>) <span class="op">=></span> {
<span class="kw">match</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">e</span> {
<span class="prelude-val">Ok</span>(<span class="ident">t</span>) <span class="op">=></span> <span class="ident">t</span>,
<span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"received error for `{}`: {}"</span>, <span class="macro">stringify</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">e</span>), <span class="ident">e</span>),
}
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">bind_error</span>() {
<span class="kw">match</span> <span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="string">"1.1.1.1:9999"</span>) {
<span class="prelude-val">Ok</span>(..) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(),
<span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">e</span>.<span class="ident">kind</span>(), <span class="ident">ErrorKind</span>::<span class="ident">AddrNotAvailable</span>)
}
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">socket_smoke_test_ip4</span>() {
<span class="ident">each_ip</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="op">|</span><span class="ident">server_ip</span>, <span class="ident">client_ip</span><span class="op">|</span> {
<span class="kw">let</span> (<span class="ident">tx1</span>, <span class="ident">rx1</span>) <span class="op">=</span> <span class="ident">channel</span>();
<span class="kw">let</span> (<span class="ident">tx2</span>, <span class="ident">rx2</span>) <span class="op">=</span> <span class="ident">channel</span>();
<span class="kw">let</span> <span class="ident">_t</span> <span class="op">=</span> <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="kw">let</span> <span class="ident">client</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&</span><span class="ident">client_ip</span>));
<span class="ident">rx1</span>.<span class="ident">recv</span>().<span class="ident">unwrap</span>();
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">client</span>.<span class="ident">send_to</span>(<span class="kw-2">&</span>[<span class="number">99</span>], <span class="kw-2">&</span><span class="ident">server_ip</span>));
<span class="ident">tx2</span>.<span class="ident">send</span>(()).<span class="ident">unwrap</span>();
});
<span class="kw">let</span> <span class="ident">server</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&</span><span class="ident">server_ip</span>));
<span class="ident">tx1</span>.<span class="ident">send</span>(()).<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buf</span> <span class="op">=</span> [<span class="number">0</span>];
<span class="kw">let</span> (<span class="ident">nread</span>, <span class="ident">src</span>) <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">server</span>.<span class="ident">recv_from</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">buf</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">nread</span>, <span class="number">1</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">buf</span>[<span class="number">0</span>], <span class="number">99</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">src</span>, <span class="ident">client_ip</span>);
<span class="ident">rx2</span>.<span class="ident">recv</span>().<span class="ident">unwrap</span>();
})
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">socket_name_ip4</span>() {
<span class="ident">each_ip</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="op">|</span><span class="ident">addr</span>, <span class="kw">_</span><span class="op">|</span> {
<span class="kw">let</span> <span class="ident">server</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&</span><span class="ident">addr</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">addr</span>, <span class="macro">t</span><span class="macro">!</span>(<span class="ident">server</span>.<span class="ident">local_addr</span>()));
})
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">udp_clone_smoke</span>() {
<span class="ident">each_ip</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="op">|</span><span class="ident">addr1</span>, <span class="ident">addr2</span><span class="op">|</span> {
<span class="kw">let</span> <span class="ident">sock1</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&</span><span class="ident">addr1</span>));
<span class="kw">let</span> <span class="ident">sock2</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&</span><span class="ident">addr2</span>));
<span class="kw">let</span> <span class="ident">_t</span> <span class="op">=</span> <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buf</span> <span class="op">=</span> [<span class="number">0</span>, <span class="number">0</span>];
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">sock2</span>.<span class="ident">recv_from</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">buf</span>).<span class="ident">unwrap</span>(), (<span class="number">1</span>, <span class="ident">addr1</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">buf</span>[<span class="number">0</span>], <span class="number">1</span>);
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">sock2</span>.<span class="ident">send_to</span>(<span class="kw-2">&</span>[<span class="number">2</span>], <span class="kw-2">&</span><span class="ident">addr1</span>));
});
<span class="kw">let</span> <span class="ident">sock3</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">sock1</span>.<span class="ident">try_clone</span>());
<span class="kw">let</span> (<span class="ident">tx1</span>, <span class="ident">rx1</span>) <span class="op">=</span> <span class="ident">channel</span>();
<span class="kw">let</span> (<span class="ident">tx2</span>, <span class="ident">rx2</span>) <span class="op">=</span> <span class="ident">channel</span>();
<span class="kw">let</span> <span class="ident">_t</span> <span class="op">=</span> <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="ident">rx1</span>.<span class="ident">recv</span>().<span class="ident">unwrap</span>();
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">sock3</span>.<span class="ident">send_to</span>(<span class="kw-2">&</span>[<span class="number">1</span>], <span class="kw-2">&</span><span class="ident">addr2</span>));
<span class="ident">tx2</span>.<span class="ident">send</span>(()).<span class="ident">unwrap</span>();
});
<span class="ident">tx1</span>.<span class="ident">send</span>(()).<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buf</span> <span class="op">=</span> [<span class="number">0</span>, <span class="number">0</span>];
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">sock1</span>.<span class="ident">recv_from</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">buf</span>).<span class="ident">unwrap</span>(), (<span class="number">1</span>, <span class="ident">addr2</span>));
<span class="ident">rx2</span>.<span class="ident">recv</span>().<span class="ident">unwrap</span>();
})
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">udp_clone_two_read</span>() {
<span class="ident">each_ip</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="op">|</span><span class="ident">addr1</span>, <span class="ident">addr2</span><span class="op">|</span> {
<span class="kw">let</span> <span class="ident">sock1</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&</span><span class="ident">addr1</span>));
<span class="kw">let</span> <span class="ident">sock2</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&</span><span class="ident">addr2</span>));
<span class="kw">let</span> (<span class="ident">tx1</span>, <span class="ident">rx</span>) <span class="op">=</span> <span class="ident">channel</span>();
<span class="kw">let</span> <span class="ident">tx2</span> <span class="op">=</span> <span class="ident">tx1</span>.<span class="ident">clone</span>();
<span class="kw">let</span> <span class="ident">_t</span> <span class="op">=</span> <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">sock2</span>.<span class="ident">send_to</span>(<span class="kw-2">&</span>[<span class="number">1</span>], <span class="kw-2">&</span><span class="ident">addr1</span>));
<span class="ident">rx</span>.<span class="ident">recv</span>().<span class="ident">unwrap</span>();
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">sock2</span>.<span class="ident">send_to</span>(<span class="kw-2">&</span>[<span class="number">2</span>], <span class="kw-2">&</span><span class="ident">addr1</span>));
<span class="ident">rx</span>.<span class="ident">recv</span>().<span class="ident">unwrap</span>();
});
<span class="kw">let</span> <span class="ident">sock3</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">sock1</span>.<span class="ident">try_clone</span>());
<span class="kw">let</span> (<span class="ident">done</span>, <span class="ident">rx</span>) <span class="op">=</span> <span class="ident">channel</span>();
<span class="kw">let</span> <span class="ident">_t</span> <span class="op">=</span> <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buf</span> <span class="op">=</span> [<span class="number">0</span>, <span class="number">0</span>];
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">sock3</span>.<span class="ident">recv_from</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">buf</span>));
<span class="ident">tx2</span>.<span class="ident">send</span>(()).<span class="ident">unwrap</span>();
<span class="ident">done</span>.<span class="ident">send</span>(()).<span class="ident">unwrap</span>();
});
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buf</span> <span class="op">=</span> [<span class="number">0</span>, <span class="number">0</span>];
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">sock1</span>.<span class="ident">recv_from</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">buf</span>));
<span class="ident">tx1</span>.<span class="ident">send</span>(()).<span class="ident">unwrap</span>();
<span class="ident">rx</span>.<span class="ident">recv</span>().<span class="ident">unwrap</span>();
})
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">udp_clone_two_write</span>() {
<span class="ident">each_ip</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="op">|</span><span class="ident">addr1</span>, <span class="ident">addr2</span><span class="op">|</span> {
<span class="kw">let</span> <span class="ident">sock1</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&</span><span class="ident">addr1</span>));
<span class="kw">let</span> <span class="ident">sock2</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&</span><span class="ident">addr2</span>));
<span class="kw">let</span> (<span class="ident">tx</span>, <span class="ident">rx</span>) <span class="op">=</span> <span class="ident">channel</span>();
<span class="kw">let</span> (<span class="ident">serv_tx</span>, <span class="ident">serv_rx</span>) <span class="op">=</span> <span class="ident">channel</span>();
<span class="kw">let</span> <span class="ident">_t</span> <span class="op">=</span> <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buf</span> <span class="op">=</span> [<span class="number">0</span>, <span class="number">1</span>];
<span class="ident">rx</span>.<span class="ident">recv</span>().<span class="ident">unwrap</span>();
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">sock2</span>.<span class="ident">recv_from</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">buf</span>));
<span class="ident">serv_tx</span>.<span class="ident">send</span>(()).<span class="ident">unwrap</span>();
});
<span class="kw">let</span> <span class="ident">sock3</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">sock1</span>.<span class="ident">try_clone</span>());
<span class="kw">let</span> (<span class="ident">done</span>, <span class="ident">rx</span>) <span class="op">=</span> <span class="ident">channel</span>();
<span class="kw">let</span> <span class="ident">tx2</span> <span class="op">=</span> <span class="ident">tx</span>.<span class="ident">clone</span>();
<span class="kw">let</span> <span class="ident">_t</span> <span class="op">=</span> <span class="ident">thread</span>::<span class="ident">spawn</span>(<span class="kw">move</span><span class="op">||</span> {
<span class="kw">match</span> <span class="ident">sock3</span>.<span class="ident">send_to</span>(<span class="kw-2">&</span>[<span class="number">1</span>], <span class="kw-2">&</span><span class="ident">addr2</span>) {
<span class="prelude-val">Ok</span>(..) <span class="op">=></span> { <span class="kw">let</span> <span class="kw">_</span> <span class="op">=</span> <span class="ident">tx2</span>.<span class="ident">send</span>(()); }
<span class="prelude-val">Err</span>(..) <span class="op">=></span> {}
}
<span class="ident">done</span>.<span class="ident">send</span>(()).<span class="ident">unwrap</span>();
});
<span class="kw">match</span> <span class="ident">sock1</span>.<span class="ident">send_to</span>(<span class="kw-2">&</span>[<span class="number">2</span>], <span class="kw-2">&</span><span class="ident">addr2</span>) {
<span class="prelude-val">Ok</span>(..) <span class="op">=></span> { <span class="kw">let</span> <span class="kw">_</span> <span class="op">=</span> <span class="ident">tx</span>.<span class="ident">send</span>(()); }
<span class="prelude-val">Err</span>(..) <span class="op">=></span> {}
}
<span class="ident">drop</span>(<span class="ident">tx</span>);
<span class="ident">rx</span>.<span class="ident">recv</span>().<span class="ident">unwrap</span>();
<span class="ident">serv_rx</span>.<span class="ident">recv</span>().<span class="ident">unwrap</span>();
})
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">debug</span>() {
<span class="kw">let</span> <span class="ident">name</span> <span class="op">=</span> <span class="kw">if</span> <span class="macro">cfg</span><span class="macro">!</span>(<span class="ident">windows</span>) {<span class="string">"socket"</span>} <span class="kw">else</span> {<span class="string">"fd"</span>};
<span class="kw">let</span> <span class="ident">socket_addr</span> <span class="op">=</span> <span class="ident">next_test_ip4</span>();
<span class="kw">let</span> <span class="ident">udpsock</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&</span><span class="ident">socket_addr</span>));
<span class="kw">let</span> <span class="ident">udpsock_inner</span> <span class="op">=</span> <span class="ident">udpsock</span>.<span class="number">0</span>.<span class="ident">socket</span>().<span class="ident">as_inner</span>();
<span class="kw">let</span> <span class="ident">compare</span> <span class="op">=</span> <span class="macro">format</span><span class="macro">!</span>(<span class="string">"UdpSocket {{ addr: {:?}, {}: {:?} }}"</span>,
<span class="ident">socket_addr</span>, <span class="ident">name</span>, <span class="ident">udpsock_inner</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro">format</span><span class="macro">!</span>(<span class="string">"{:?}"</span>, <span class="ident">udpsock</span>), <span class="ident">compare</span>);
}
<span class="comment">// FIXME: re-enabled bitrig/openbsd/netbsd tests once their socket timeout code</span>
<span class="comment">// no longer has rounding errors.</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">any</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"bitrig"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"netbsd"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"openbsd"</span>), <span class="ident">ignore</span>)]</span>
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">timeouts</span>() {
<span class="kw">let</span> <span class="ident">addr</span> <span class="op">=</span> <span class="ident">next_test_ip4</span>();
<span class="kw">let</span> <span class="ident">stream</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&</span><span class="ident">addr</span>));
<span class="kw">let</span> <span class="ident">dur</span> <span class="op">=</span> <span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">15410</span>, <span class="number">0</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">None</span>, <span class="macro">t</span><span class="macro">!</span>(<span class="ident">stream</span>.<span class="ident">read_timeout</span>()));
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">stream</span>.<span class="ident">set_read_timeout</span>(<span class="prelude-val">Some</span>(<span class="ident">dur</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="ident">dur</span>), <span class="macro">t</span><span class="macro">!</span>(<span class="ident">stream</span>.<span class="ident">read_timeout</span>()));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">None</span>, <span class="macro">t</span><span class="macro">!</span>(<span class="ident">stream</span>.<span class="ident">write_timeout</span>()));
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">stream</span>.<span class="ident">set_write_timeout</span>(<span class="prelude-val">Some</span>(<span class="ident">dur</span>)));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">Some</span>(<span class="ident">dur</span>), <span class="macro">t</span><span class="macro">!</span>(<span class="ident">stream</span>.<span class="ident">write_timeout</span>()));
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">stream</span>.<span class="ident">set_read_timeout</span>(<span class="prelude-val">None</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">None</span>, <span class="macro">t</span><span class="macro">!</span>(<span class="ident">stream</span>.<span class="ident">read_timeout</span>()));
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">stream</span>.<span class="ident">set_write_timeout</span>(<span class="prelude-val">None</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="prelude-val">None</span>, <span class="macro">t</span><span class="macro">!</span>(<span class="ident">stream</span>.<span class="ident">write_timeout</span>()));
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_read_timeout</span>() {
<span class="kw">let</span> <span class="ident">addr</span> <span class="op">=</span> <span class="ident">next_test_ip4</span>();
<span class="kw">let</span> <span class="ident">stream</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&</span><span class="ident">addr</span>));
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">stream</span>.<span class="ident">set_read_timeout</span>(<span class="prelude-val">Some</span>(<span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="number">1000</span>))));
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buf</span> <span class="op">=</span> [<span class="number">0</span>; <span class="number">10</span>];
<span class="kw">let</span> <span class="ident">start</span> <span class="op">=</span> <span class="ident">Instant</span>::<span class="ident">now</span>();
<span class="kw">let</span> <span class="ident">kind</span> <span class="op">=</span> <span class="ident">stream</span>.<span class="ident">recv_from</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">buf</span>).<span class="ident">err</span>().<span class="ident">expect</span>(<span class="string">"expected error"</span>).<span class="ident">kind</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">kind</span> <span class="op">==</span> <span class="ident">ErrorKind</span>::<span class="ident">WouldBlock</span> <span class="op">||</span> <span class="ident">kind</span> <span class="op">==</span> <span class="ident">ErrorKind</span>::<span class="ident">TimedOut</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">start</span>.<span class="ident">elapsed</span>() <span class="op">></span> <span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="number">400</span>));
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_read_with_timeout</span>() {
<span class="kw">let</span> <span class="ident">addr</span> <span class="op">=</span> <span class="ident">next_test_ip4</span>();
<span class="kw">let</span> <span class="ident">stream</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&</span><span class="ident">addr</span>));
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">stream</span>.<span class="ident">set_read_timeout</span>(<span class="prelude-val">Some</span>(<span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="number">1000</span>))));
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">stream</span>.<span class="ident">send_to</span>(<span class="string">b"hello world"</span>, <span class="kw-2">&</span><span class="ident">addr</span>));
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buf</span> <span class="op">=</span> [<span class="number">0</span>; <span class="number">11</span>];
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">stream</span>.<span class="ident">recv_from</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">buf</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">b"hello world"</span>, <span class="kw-2">&</span><span class="ident">buf</span>[..]);
<span class="kw">let</span> <span class="ident">start</span> <span class="op">=</span> <span class="ident">Instant</span>::<span class="ident">now</span>();
<span class="kw">let</span> <span class="ident">kind</span> <span class="op">=</span> <span class="ident">stream</span>.<span class="ident">recv_from</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">buf</span>).<span class="ident">err</span>().<span class="ident">expect</span>(<span class="string">"expected error"</span>).<span class="ident">kind</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">kind</span> <span class="op">==</span> <span class="ident">ErrorKind</span>::<span class="ident">WouldBlock</span> <span class="op">||</span> <span class="ident">kind</span> <span class="op">==</span> <span class="ident">ErrorKind</span>::<span class="ident">TimedOut</span>);
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">start</span>.<span class="ident">elapsed</span>() <span class="op">></span> <span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="number">400</span>));
}
<span class="comment">// Ensure the `set_read_timeout` and `set_write_timeout` calls return errors</span>
<span class="comment">// when passed zero Durations</span>
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_timeout_zero_duration</span>() {
<span class="kw">let</span> <span class="ident">addr</span> <span class="op">=</span> <span class="ident">next_test_ip4</span>();
<span class="kw">let</span> <span class="ident">socket</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&</span><span class="ident">addr</span>));
<span class="kw">let</span> <span class="ident">result</span> <span class="op">=</span> <span class="ident">socket</span>.<span class="ident">set_write_timeout</span>(<span class="prelude-val">Some</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">0</span>)));
<span class="kw">let</span> <span class="ident">err</span> <span class="op">=</span> <span class="ident">result</span>.<span class="ident">unwrap_err</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">err</span>.<span class="ident">kind</span>(), <span class="ident">ErrorKind</span>::<span class="ident">InvalidInput</span>);
<span class="kw">let</span> <span class="ident">result</span> <span class="op">=</span> <span class="ident">socket</span>.<span class="ident">set_read_timeout</span>(<span class="prelude-val">Some</span>(<span class="ident">Duration</span>::<span class="ident">new</span>(<span class="number">0</span>, <span class="number">0</span>)));
<span class="kw">let</span> <span class="ident">err</span> <span class="op">=</span> <span class="ident">result</span>.<span class="ident">unwrap_err</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">err</span>.<span class="ident">kind</span>(), <span class="ident">ErrorKind</span>::<span class="ident">InvalidInput</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">connect_send_recv</span>() {
<span class="kw">let</span> <span class="ident">addr</span> <span class="op">=</span> <span class="ident">next_test_ip4</span>();
<span class="kw">let</span> <span class="ident">socket</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&</span><span class="ident">addr</span>));
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">socket</span>.<span class="ident">connect</span>(<span class="ident">addr</span>));
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">socket</span>.<span class="ident">send</span>(<span class="string">b"hello world"</span>));
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buf</span> <span class="op">=</span> [<span class="number">0</span>; <span class="number">11</span>];
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">socket</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">buf</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">b"hello world"</span>, <span class="kw-2">&</span><span class="ident">buf</span>[..]);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">connect_send_peek_recv</span>() {
<span class="ident">each_ip</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="op">|</span><span class="ident">addr</span>, <span class="kw">_</span><span class="op">|</span> {
<span class="kw">let</span> <span class="ident">socket</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&</span><span class="ident">addr</span>));
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">socket</span>.<span class="ident">connect</span>(<span class="ident">addr</span>));
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">socket</span>.<span class="ident">send</span>(<span class="string">b"hello world"</span>));
<span class="kw">for</span> <span class="kw">_</span> <span class="kw">in</span> <span class="number">1</span>..<span class="number">3</span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buf</span> <span class="op">=</span> [<span class="number">0</span>; <span class="number">11</span>];
<span class="kw">let</span> <span class="ident">size</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">socket</span>.<span class="ident">peek</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">buf</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">b"hello world"</span>, <span class="kw-2">&</span><span class="ident">buf</span>[..]);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">size</span>, <span class="number">11</span>);
}
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buf</span> <span class="op">=</span> [<span class="number">0</span>; <span class="number">11</span>];
<span class="kw">let</span> <span class="ident">size</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">socket</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">buf</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">b"hello world"</span>, <span class="kw-2">&</span><span class="ident">buf</span>[..]);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">size</span>, <span class="number">11</span>);
})
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">peek_from</span>() {
<span class="ident">each_ip</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="op">|</span><span class="ident">addr</span>, <span class="kw">_</span><span class="op">|</span> {
<span class="kw">let</span> <span class="ident">socket</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&</span><span class="ident">addr</span>));
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">socket</span>.<span class="ident">send_to</span>(<span class="string">b"hello world"</span>, <span class="kw-2">&</span><span class="ident">addr</span>));
<span class="kw">for</span> <span class="kw">_</span> <span class="kw">in</span> <span class="number">1</span>..<span class="number">3</span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buf</span> <span class="op">=</span> [<span class="number">0</span>; <span class="number">11</span>];
<span class="kw">let</span> (<span class="ident">size</span>, <span class="kw">_</span>) <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">socket</span>.<span class="ident">peek_from</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">buf</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">b"hello world"</span>, <span class="kw-2">&</span><span class="ident">buf</span>[..]);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">size</span>, <span class="number">11</span>);
}
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buf</span> <span class="op">=</span> [<span class="number">0</span>; <span class="number">11</span>];
<span class="kw">let</span> (<span class="ident">size</span>, <span class="kw">_</span>) <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">socket</span>.<span class="ident">recv_from</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">buf</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">b"hello world"</span>, <span class="kw-2">&</span><span class="ident">buf</span>[..]);
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">size</span>, <span class="number">11</span>);
})
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">ttl</span>() {
<span class="kw">let</span> <span class="ident">ttl</span> <span class="op">=</span> <span class="number">100</span>;
<span class="kw">let</span> <span class="ident">addr</span> <span class="op">=</span> <span class="ident">next_test_ip4</span>();
<span class="kw">let</span> <span class="ident">stream</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&</span><span class="ident">addr</span>));
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">stream</span>.<span class="ident">set_ttl</span>(<span class="ident">ttl</span>));
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">ttl</span>, <span class="macro">t</span><span class="macro">!</span>(<span class="ident">stream</span>.<span class="ident">ttl</span>()));
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">set_nonblocking</span>() {
<span class="ident">each_ip</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="op">|</span><span class="ident">addr</span>, <span class="kw">_</span><span class="op">|</span> {
<span class="kw">let</span> <span class="ident">socket</span> <span class="op">=</span> <span class="macro">t</span><span class="macro">!</span>(<span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&</span><span class="ident">addr</span>));
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">socket</span>.<span class="ident">set_nonblocking</span>(<span class="bool-val">true</span>));
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">socket</span>.<span class="ident">set_nonblocking</span>(<span class="bool-val">false</span>));
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">socket</span>.<span class="ident">connect</span>(<span class="ident">addr</span>));
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">socket</span>.<span class="ident">set_nonblocking</span>(<span class="bool-val">false</span>));
<span class="macro">t</span><span class="macro">!</span>(<span class="ident">socket</span>.<span class="ident">set_nonblocking</span>(<span class="bool-val">true</span>));
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buf</span> <span class="op">=</span> [<span class="number">0</span>];
<span class="kw">match</span> <span class="ident">socket</span>.<span class="ident">recv</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">buf</span>) {
<span class="prelude-val">Ok</span>(<span class="kw">_</span>) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"expected error"</span>),
<span class="prelude-val">Err</span>(<span class="kw-2">ref</span> <span class="ident">e</span>) <span class="kw">if</span> <span class="ident">e</span>.<span class="ident">kind</span>() <span class="op">==</span> <span class="ident">ErrorKind</span>::<span class="ident">WouldBlock</span> <span class="op">=></span> {}
<span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"unexpected error {}"</span>, <span class="ident">e</span>),
}
})
}
}
</pre>
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