greg/mentat
1
0
Fork 0
Code Issues 294 Pull requests Projects Releases 9 Packages Wiki Activity
mentat/mio/net/struct.UdpSocket.html

412 lines
59 KiB
HTML
Raw Normal View History

Update documentation
2018-08-22 17:04:13 +00:00
<!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="API documentation for the Rust `UdpSocket` struct in crate `mio`.">
<meta name="keywords" content="rust, rustlang, rust-lang, UdpSocket">
<title>mio::net::UdpSocket - Rust</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="../../main.css" id="themeStyle">
<script src="../../storage.js"></script>
</head>
<body class="rustdoc struct">
<!--[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">&#9776;</div>
<p class='location'>Struct UdpSocket</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.bind">bind</a><a href="#method.from_socket">from_socket</a><a href="#method.local_addr">local_addr</a><a href="#method.try_clone">try_clone</a><a href="#method.send_to">send_to</a><a href="#method.recv_from">recv_from</a><a href="#method.send">send</a><a href="#method.recv">recv</a><a href="#method.connect">connect</a><a href="#method.set_broadcast">set_broadcast</a><a href="#method.broadcast">broadcast</a><a href="#method.set_multicast_loop_v4">set_multicast_loop_v4</a><a href="#method.multicast_loop_v4">multicast_loop_v4</a><a href="#method.set_multicast_ttl_v4">set_multicast_ttl_v4</a><a href="#method.multicast_ttl_v4">multicast_ttl_v4</a><a href="#method.set_multicast_loop_v6">set_multicast_loop_v6</a><a href="#method.multicast_loop_v6">multicast_loop_v6</a><a href="#method.set_ttl">set_ttl</a><a href="#method.ttl">ttl</a><a href="#method.join_multicast_v4">join_multicast_v4</a><a href="#method.join_multicast_v6">join_multicast_v6</a><a href="#method.leave_multicast_v4">leave_multicast_v4</a><a href="#method.leave_multicast_v6">leave_multicast_v6</a><a href="#method.set_only_v6">set_only_v6</a><a href="#method.only_v6">only_v6</a><a href="#method.take_error">take_error</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Evented">Evented</a><a href="#impl-Debug">Debug</a><a href="#impl-IntoRawFd">IntoRawFd</a><a href="#impl-AsRawFd">AsRawFd</a><a href="#impl-FromRawFd">FromRawFd</a></div></div><p class='location'><a href='../index.html'>mio</a>::<wbr><a href='index.html'>net</a></p><script>window.sidebarCurrent = {name: 'UdpSocket', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
</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">
</div>
</form>
</nav>
<section id='main' class="content">
<h1 class='fqn'><span class='in-band'>Struct <a href='../index.html'>mio</a>::<wbr><a href='index.html'>net</a>::<wbr><a class="struct" href=''>UdpSocket</a></span><span class='out-of-band'><span id='render-detail'>
<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
[<span class='inner'>&#x2212;</span>]
</a>
</span><a class='srclink' href='../../src/mio/net/udp.rs.html#89-92' title='goto source code'>[src]</a></span></h1>
<pre class='rust struct'>pub struct UdpSocket { /* fields omitted */ }</pre><div class='docblock'><p>A User Datagram Protocol socket.</p>
<p>This is an implementation of a bound UDP socket. This supports both IPv4 and
IPv6 addresses, and there is no corresponding notion of a server because UDP
is a datagram protocol.</p>
<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="comment">// An Echo program:</span>
<span class="comment">// SENDER -&gt; sends a message.</span>
<span class="comment">// ECHOER -&gt; listens and prints the message received.</span>
<span class="kw">use</span> <span class="ident">mio</span>::<span class="ident">net</span>::<span class="ident">UdpSocket</span>;
<span class="kw">use</span> <span class="ident">mio</span>::{<span class="ident">Events</span>, <span class="ident">Ready</span>, <span class="ident">Poll</span>, <span class="ident">PollOpt</span>, <span class="ident">Token</span>};
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">time</span>::<span class="ident">Duration</span>;
<span class="kw">const</span> <span class="ident">SENDER</span>: <span class="ident">Token</span> <span class="op">=</span> <span class="ident">Token</span>(<span class="number">0</span>);
<span class="kw">const</span> <span class="ident">ECHOER</span>: <span class="ident">Token</span> <span class="op">=</span> <span class="ident">Token</span>(<span class="number">1</span>);
<span class="comment">// This operation will fail if the address is in use, so we select different ports for each</span>
<span class="comment">// socket.</span>
<span class="kw">let</span> <span class="ident">sender_socket</span> <span class="op">=</span> <span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&amp;</span><span class="string">&quot;127.0.0.1:0&quot;</span>.<span class="ident">parse</span>()<span class="question-mark">?</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">echoer_socket</span> <span class="op">=</span> <span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&amp;</span><span class="string">&quot;127.0.0.1:0&quot;</span>.<span class="ident">parse</span>()<span class="question-mark">?</span>)<span class="question-mark">?</span>;
<span class="comment">// If we do not use connect here, SENDER and ECHOER would need to call send_to and recv_from</span>
<span class="comment">// respectively.</span>
<span class="ident">sender_socket</span>.<span class="ident">connect</span>(<span class="ident">echoer_socket</span>.<span class="ident">local_addr</span>().<span class="ident">unwrap</span>())<span class="question-mark">?</span>;
<span class="comment">// We need a Poll to check if SENDER is ready to be written into, and if ECHOER is ready to be</span>
<span class="comment">// read from.</span>
<span class="kw">let</span> <span class="ident">poll</span> <span class="op">=</span> <span class="ident">Poll</span>::<span class="ident">new</span>()<span class="question-mark">?</span>;
<span class="comment">// We register our sockets here so that we can check if they are ready to be written/read.</span>
<span class="ident">poll</span>.<span class="ident">register</span>(<span class="kw-2">&amp;</span><span class="ident">sender_socket</span>, <span class="ident">SENDER</span>, <span class="ident">Ready</span>::<span class="ident">writable</span>(), <span class="ident">PollOpt</span>::<span class="ident">edge</span>())<span class="question-mark">?</span>;
<span class="ident">poll</span>.<span class="ident">register</span>(<span class="kw-2">&amp;</span><span class="ident">echoer_socket</span>, <span class="ident">ECHOER</span>, <span class="ident">Ready</span>::<span class="ident">readable</span>(), <span class="ident">PollOpt</span>::<span class="ident">edge</span>())<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">msg_to_send</span> <span class="op">=</span> [<span class="number">9</span>; <span class="number">9</span>];
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buffer</span> <span class="op">=</span> [<span class="number">0</span>; <span class="number">9</span>];
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">events</span> <span class="op">=</span> <span class="ident">Events</span>::<span class="ident">with_capacity</span>(<span class="number">128</span>);
<span class="kw">loop</span> {
<span class="ident">poll</span>.<span class="ident">poll</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">events</span>, <span class="prelude-val">Some</span>(<span class="ident">Duration</span>::<span class="ident">from_millis</span>(<span class="number">100</span>)))<span class="question-mark">?</span>;
<span class="kw">for</span> <span class="ident">event</span> <span class="kw">in</span> <span class="ident">events</span>.<span class="ident">iter</span>() {
<span class="kw">match</span> <span class="ident">event</span>.<span class="ident">token</span>() {
<span class="comment">// Our SENDER is ready to be written into.</span>
<span class="ident">SENDER</span> <span class="op">=&gt;</span> {
<span class="kw">let</span> <span class="ident">bytes_sent</span> <span class="op">=</span> <span class="ident">sender_socket</span>.<span class="ident">send</span>(<span class="kw-2">&amp;</span><span class="ident">msg_to_send</span>)<span class="question-mark">?</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">bytes_sent</span>, <span class="number">9</span>);
<span class="macro">println</span><span class="macro">!</span>(<span class="string">&quot;sent {:?} -&gt; {:?} bytes&quot;</span>, <span class="ident">msg_to_send</span>, <span class="ident">bytes_sent</span>);
},
<span class="comment">// Our ECHOER is ready to be read from.</span>
<span class="ident">ECHOER</span> <span class="op">=&gt;</span> {
<span class="kw">let</span> <span class="ident">num_recv</span> <span class="op">=</span> <span class="ident">echoer_socket</span>.<span class="ident">recv</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">buffer</span>)<span class="question-mark">?</span>;
<span class="macro">println</span><span class="macro">!</span>(<span class="string">&quot;echo {:?} -&gt; {:?}&quot;</span>, <span class="ident">buffer</span>, <span class="ident">num_recv</span>);
<span class="ident">buffer</span> <span class="op">=</span> [<span class="number">0</span>; <span class="number">9</span>];
}
_ <span class="op">=&gt;</span> <span class="macro">unreachable</span><span class="macro">!</span>()
}
}
}</pre>
</div>
<h2 id='methods' class='small-section-header'>
Methods<a href='#methods' class='anchor'></a>
</h2>
<h3 id='impl' class='impl'><span class='in-band'><code>impl <a class="struct" href="../../mio/net/struct.UdpSocket.html" title="struct mio::net::UdpSocket">UdpSocket</a></code><a href='#impl' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#94-545' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.bind' class="method"><span id='bind.v' class='invisible'><code>pub fn <a href='#method.bind' class='fnname'>bind</a>(addr: &amp;<a class="enum" href="https://doc.rust-lang.org/nightly/std/net/addr/enum.SocketAddr.html" title="enum std::net::addr::SocketAddr">SocketAddr</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="struct" href="../../mio/net/struct.UdpSocket.html" title="struct mio::net::UdpSocket">UdpSocket</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#122-125' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Creates a UDP socket from the given address.</p>
<h1 id="examples-1" class="section-header"><a href="#examples-1">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">mio</span>::<span class="ident">net</span>::<span class="ident">UdpSocket</span>;
<span class="comment">// We must bind it to an open address.</span>
<span class="kw">let</span> <span class="ident">socket</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&amp;</span><span class="string">&quot;127.0.0.1:0&quot;</span>.<span class="ident">parse</span>()<span class="question-mark">?</span>) {
<span class="prelude-val">Ok</span>(<span class="ident">new_socket</span>) <span class="op">=&gt;</span> <span class="ident">new_socket</span>,
<span class="prelude-val">Err</span>(<span class="ident">fail</span>) <span class="op">=&gt;</span> {
<span class="comment">// We panic! here, but you could try to bind it again on another address.</span>
<span class="macro">panic</span><span class="macro">!</span>(<span class="string">&quot;Failed to bind socket. {:?}&quot;</span>, <span class="ident">fail</span>);
}
};
<span class="comment">// Our socket was created, but we should not use it before checking it&#39;s readiness.</span></pre>
</div><h4 id='method.from_socket' class="method"><span id='from_socket.v' class='invisible'><code>pub fn <a href='#method.from_socket' class='fnname'>from_socket</a>(socket: <a class="struct" href="https://doc.rust-lang.org/nightly/std/net/udp/struct.UdpSocket.html" title="struct std::net::udp::UdpSocket">UdpSocket</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="struct" href="../../mio/net/struct.UdpSocket.html" title="struct mio::net::UdpSocket">UdpSocket</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#137-142' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Creates a new mio-wrapped socket from an underlying and bound std
socket.</p>
<p>This function requires that <code>socket</code> has previously been bound to an
address to work correctly, and returns an I/O object which can be used
with mio to send/receive UDP messages.</p>
<p>This can be used in conjunction with net2's <code>UdpBuilder</code> interface to
configure a socket before it's handed off to mio, such as setting
options like <code>reuse_address</code> or binding to multiple addresses.</p>
</div><h4 id='method.local_addr' class="method"><span id='local_addr.v' class='invisible'><code>pub fn <a href='#method.local_addr' class='fnname'>local_addr</a>(&amp;self) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="enum" href="https://doc.rust-lang.org/nightly/std/net/addr/enum.SocketAddr.html" title="enum std::net::addr::SocketAddr">SocketAddr</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#167-169' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Returns the socket address that this socket was created from.</p>
<h1 id="examples-2" class="section-header"><a href="#examples-2">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">mio</span>::<span class="ident">net</span>::<span class="ident">UdpSocket</span>;
<span class="kw">let</span> <span class="ident">addr</span> <span class="op">=</span> <span class="string">&quot;127.0.0.1:0&quot;</span>.<span class="ident">parse</span>()<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">socket</span> <span class="op">=</span> <span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&amp;</span><span class="ident">addr</span>)<span class="question-mark">?</span>;</pre>
</div><h4 id='method.try_clone' class="method"><span id='try_clone.v' class='invisible'><code>pub fn <a href='#method.try_clone' class='fnname'>try_clone</a>(&amp;self) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="struct" href="../../mio/net/struct.UdpSocket.html" title="struct mio::net::UdpSocket">UdpSocket</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#198-206' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Creates a new independently owned handle to the underlying socket.</p>
<p>The returned <code>UdpSocket</code> is a reference to the same socket that this
object references. Both handles will read and write the same port, and
options set on one socket will be propagated to the other.</p>
<h1 id="examples-3" class="section-header"><a href="#examples-3">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">mio</span>::<span class="ident">net</span>::<span class="ident">UdpSocket</span>;
<span class="comment">// We must bind it to an open address.</span>
<span class="kw">let</span> <span class="ident">socket</span> <span class="op">=</span> <span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&amp;</span><span class="string">&quot;127.0.0.1:0&quot;</span>.<span class="ident">parse</span>()<span class="question-mark">?</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">cloned_socket</span> <span class="op">=</span> <span class="ident">socket</span>.<span class="ident">try_clone</span>()<span class="question-mark">?</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">socket</span>.<span class="ident">local_addr</span>()<span class="question-mark">?</span>, <span class="ident">cloned_socket</span>.<span class="ident">local_addr</span>()<span class="question-mark">?</span>);
</pre>
</div><h4 id='method.send_to' class="method"><span id='send_to.v' class='invisible'><code>pub fn <a href='#method.send_to' class='fnname'>send_to</a>(&amp;self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&amp;[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>, target: &amp;<a class="enum" href="https://doc.rust-lang.org/nightly/std/net/addr/enum.SocketAddr.html" title="enum std::net::addr::SocketAddr">SocketAddr</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#236-238' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Sends data on the socket to the given address. On success, returns the
number of bytes written.</p>
<p>Address type can be any implementor of <code>ToSocketAddrs</code> trait. See its
documentation for concrete examples.</p>
<h1 id="examples-4" class="section-header"><a href="#examples-4">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">mio</span>::<span class="ident">net</span>::<span class="ident">UdpSocket</span>;
<span class="kw">let</span> <span class="ident">socket</span> <span class="op">=</span> <span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&amp;</span><span class="string">&quot;127.0.0.1:0&quot;</span>.<span class="ident">parse</span>()<span class="question-mark">?</span>)<span class="question-mark">?</span>;
<span class="comment">// We must check if the socket is writable before calling send_to,</span>
<span class="comment">// or we could run into a WouldBlock error.</span>
<span class="kw">let</span> <span class="ident">bytes_sent</span> <span class="op">=</span> <span class="ident">socket</span>.<span class="ident">send_to</span>(<span class="kw-2">&amp;</span>[<span class="number">9</span>; <span class="number">9</span>], <span class="kw-2">&amp;</span><span class="string">&quot;127.0.0.1:11100&quot;</span>.<span class="ident">parse</span>()<span class="question-mark">?</span>)<span class="question-mark">?</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">bytes_sent</span>, <span class="number">9</span>);</pre>
</div><h4 id='method.recv_from' class="method"><span id='recv_from.v' class='invisible'><code>pub fn <a href='#method.recv_from' class='fnname'>recv_from</a>(&amp;self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&amp;mut [</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="enum" href="https://doc.rust-lang.org/nightly/std/net/addr/enum.SocketAddr.html" title="enum std::net::addr::SocketAddr">SocketAddr</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#267-269' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Receives data from the socket. On success, returns the number of bytes
read and the address from whence the data came.</p>
<h1 id="examples-5" class="section-header"><a href="#examples-5">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">mio</span>::<span class="ident">net</span>::<span class="ident">UdpSocket</span>;
<span class="kw">let</span> <span class="ident">socket</span> <span class="op">=</span> <span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&amp;</span><span class="string">&quot;127.0.0.1:0&quot;</span>.<span class="ident">parse</span>()<span class="question-mark">?</span>)<span class="question-mark">?</span>;
<span class="comment">// We must check if the socket is readable before calling recv_from,</span>
<span class="comment">// or we could run into a WouldBlock error.</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">9</span>];
<span class="kw">let</span> (<span class="ident">num_recv</span>, <span class="ident">from_addr</span>) <span class="op">=</span> <span class="ident">socket</span>.<span class="ident">recv_from</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">buf</span>)<span class="question-mark">?</span>;
<span class="macro">println</span><span class="macro">!</span>(<span class="string">&quot;Received {:?} -&gt; {:?} bytes from {:?}&quot;</span>, <span class="ident">buf</span>, <span class="ident">num_recv</span>, <span class="ident">from_addr</span>);</pre>
</div><h4 id='method.send' class="method"><span id='send.v' class='invisible'><code>pub fn <a href='#method.send' class='fnname'>send</a>(&amp;self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&amp;[</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#273-275' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Sends data on the socket to the address previously bound via connect(). On success,
returns the number of bytes written.</p>
</div><h4 id='method.recv' class="method"><span id='recv.v' class='invisible'><code>pub fn <a href='#method.recv' class='fnname'>recv</a>(&amp;self, buf: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">&amp;mut [</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.slice.html">]</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#279-281' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Receives data from the socket previously bound with connect(). On success, returns
the number of bytes read and the address from whence the data came.</p>
</div><h4 id='method.connect' class="method"><span id='connect.v' class='invisible'><code>pub fn <a href='#method.connect' class='fnname'>connect</a>(&amp;self, addr: <a class="enum" href="https://doc.rust-lang.org/nightly/std/net/addr/enum.SocketAddr.html" title="enum std::net::addr::SocketAddr">SocketAddr</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#286-288' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Connects the UDP socket setting the default destination for <code>send()</code>
and limiting packets that are read via <code>recv</code> from the address specified
in <code>addr</code>.</p>
</div><h4 id='method.set_broadcast' class="method"><span id='set_broadcast.v' class='invisible'><code>pub fn <a href='#method.set_broadcast' class='fnname'>set_broadcast</a>(&amp;self, on: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#317-319' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Sets the value of the <code>SO_BROADCAST</code> option for this socket.</p>
<p>When enabled, this socket is allowed to send packets to a broadcast
address.</p>
<h1 id="examples-6" class="section-header"><a href="#examples-6">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">mio</span>::<span class="ident">net</span>::<span class="ident">UdpSocket</span>;
<span class="kw">let</span> <span class="ident">broadcast_socket</span> <span class="op">=</span> <span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&amp;</span><span class="string">&quot;127.0.0.1:0&quot;</span>.<span class="ident">parse</span>()<span class="question-mark">?</span>)<span class="question-mark">?</span>;
<span class="kw">if</span> <span class="ident">broadcast_socket</span>.<span class="ident">broadcast</span>()<span class="question-mark">?</span> <span class="op">==</span> <span class="bool-val">false</span> {
<span class="ident">broadcast_socket</span>.<span class="ident">set_broadcast</span>(<span class="bool-val">true</span>)<span class="question-mark">?</span>;
}
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">broadcast_socket</span>.<span class="ident">broadcast</span>()<span class="question-mark">?</span>, <span class="bool-val">true</span>);</pre>
</div><h4 id='method.broadcast' class="method"><span id='broadcast.v' class='invisible'><code>pub fn <a href='#method.broadcast' class='fnname'>broadcast</a>(&amp;self) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#346-348' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Gets the value of the <code>SO_BROADCAST</code> option for this socket.</p>
<p>For more information about this option, see
<a href="#method.set_broadcast"><code>set_broadcast</code></a>.</p>
<h1 id="examples-7" class="section-header"><a href="#examples-7">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">mio</span>::<span class="ident">net</span>::<span class="ident">UdpSocket</span>;
<span class="kw">let</span> <span class="ident">broadcast_socket</span> <span class="op">=</span> <span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&amp;</span><span class="string">&quot;127.0.0.1:0&quot;</span>.<span class="ident">parse</span>()<span class="question-mark">?</span>)<span class="question-mark">?</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">broadcast_socket</span>.<span class="ident">broadcast</span>()<span class="question-mark">?</span>, <span class="bool-val">false</span>);</pre>
</div><h4 id='method.set_multicast_loop_v4' class="method"><span id='set_multicast_loop_v4.v' class='invisible'><code>pub fn <a href='#method.set_multicast_loop_v4' class='fnname'>set_multicast_loop_v4</a>(&amp;self, on: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#354-356' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Sets the value of the <code>IP_MULTICAST_LOOP</code> option for this socket.</p>
<p>If enabled, multicast packets will be looped back to the local socket.
Note that this may not have any affect on IPv6 sockets.</p>
</div><h4 id='method.multicast_loop_v4' class="method"><span id='multicast_loop_v4.v' class='invisible'><code>pub fn <a href='#method.multicast_loop_v4' class='fnname'>multicast_loop_v4</a>(&amp;self) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#364-366' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Gets the value of the <code>IP_MULTICAST_LOOP</code> option for this socket.</p>
<p>For more information about this option, see
<a href="#method.set_multicast_loop_v4"><code>set_multicast_loop_v4</code></a>.</p>
</div><h4 id='method.set_multicast_ttl_v4' class="method"><span id='set_multicast_ttl_v4.v' class='invisible'><code>pub fn <a href='#method.set_multicast_ttl_v4' class='fnname'>set_multicast_ttl_v4</a>(&amp;self, ttl: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#375-377' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Sets the value of the <code>IP_MULTICAST_TTL</code> option for this socket.</p>
<p>Indicates the time-to-live value of outgoing multicast packets for
this socket. The default value is 1 which means that multicast packets
don't leave the local network unless explicitly requested.</p>
<p>Note that this may not have any affect on IPv6 sockets.</p>
</div><h4 id='method.multicast_ttl_v4' class="method"><span id='multicast_ttl_v4.v' class='invisible'><code>pub fn <a href='#method.multicast_ttl_v4' class='fnname'>multicast_ttl_v4</a>(&amp;self) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#385-387' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Gets the value of the <code>IP_MULTICAST_TTL</code> option for this socket.</p>
<p>For more information about this option, see
<a href="#method.set_multicast_ttl_v4"><code>set_multicast_ttl_v4</code></a>.</p>
</div><h4 id='method.set_multicast_loop_v6' class="method"><span id='set_multicast_loop_v6.v' class='invisible'><code>pub fn <a href='#method.set_multicast_loop_v6' class='fnname'>set_multicast_loop_v6</a>(&amp;self, on: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#393-395' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Sets the value of the <code>IPV6_MULTICAST_LOOP</code> option for this socket.</p>
<p>Controls whether this socket sees the multicast packets it sends itself.
Note that this may not have any affect on IPv4 sockets.</p>
</div><h4 id='method.multicast_loop_v6' class="method"><span id='multicast_loop_v6.v' class='invisible'><code>pub fn <a href='#method.multicast_loop_v6' class='fnname'>multicast_loop_v6</a>(&amp;self) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#403-405' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Gets the value of the <code>IPV6_MULTICAST_LOOP</code> option for this socket.</p>
<p>For more information about this option, see
<a href="#method.set_multicast_loop_v6"><code>set_multicast_loop_v6</code></a>.</p>
</div><h4 id='method.set_ttl' class="method"><span id='set_ttl.v' class='invisible'><code>pub fn <a href='#method.set_ttl' class='fnname'>set_ttl</a>(&amp;self, ttl: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#434-436' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Sets the value for the <code>IP_TTL</code> option on this socket.</p>
<p>This value sets the time-to-live field that is used in every packet sent
from this socket.</p>
<h1 id="examples-8" class="section-header"><a href="#examples-8">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">mio</span>::<span class="ident">net</span>::<span class="ident">UdpSocket</span>;
<span class="kw">let</span> <span class="ident">socket</span> <span class="op">=</span> <span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&amp;</span><span class="string">&quot;127.0.0.1:0&quot;</span>.<span class="ident">parse</span>()<span class="question-mark">?</span>)<span class="question-mark">?</span>;
<span class="kw">if</span> <span class="ident">socket</span>.<span class="ident">ttl</span>()<span class="question-mark">?</span> <span class="op">&lt;</span> <span class="number">255</span> {
<span class="ident">socket</span>.<span class="ident">set_ttl</span>(<span class="number">255</span>)<span class="question-mark">?</span>;
}
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">socket</span>.<span class="ident">ttl</span>()<span class="question-mark">?</span>, <span class="number">255</span>);</pre>
</div><h4 id='method.ttl' class="method"><span id='ttl.v' class='invisible'><code>pub fn <a href='#method.ttl' class='fnname'>ttl</a>(&amp;self) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#464-466' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Gets the value of the <code>IP_TTL</code> option for this socket.</p>
<p>For more information about this option, see <a href="#method.set_ttl"><code>set_ttl</code></a>.</p>
<h1 id="examples-9" class="section-header"><a href="#examples-9">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">mio</span>::<span class="ident">net</span>::<span class="ident">UdpSocket</span>;
<span class="kw">let</span> <span class="ident">socket</span> <span class="op">=</span> <span class="ident">UdpSocket</span>::<span class="ident">bind</span>(<span class="kw-2">&amp;</span><span class="string">&quot;127.0.0.1:0&quot;</span>.<span class="ident">parse</span>()<span class="question-mark">?</span>)<span class="question-mark">?</span>;
<span class="ident">socket</span>.<span class="ident">set_ttl</span>(<span class="number">255</span>)<span class="question-mark">?</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">socket</span>.<span class="ident">ttl</span>()<span class="question-mark">?</span>, <span class="number">255</span>);</pre>
</div><h4 id='method.join_multicast_v4' class="method"><span id='join_multicast_v4.v' class='invisible'><code>pub fn <a href='#method.join_multicast_v4' class='fnname'>join_multicast_v4</a>(<br>&nbsp;&nbsp;&nbsp;&nbsp;&amp;self, <br>&nbsp;&nbsp;&nbsp;&nbsp;multiaddr: &amp;<a class="struct" href="https://doc.rust-lang.org/nightly/std/net/ip/struct.Ipv4Addr.html" title="struct std::net::ip::Ipv4Addr">Ipv4Addr</a>, <br>&nbsp;&nbsp;&nbsp;&nbsp;interface: &amp;<a class="struct" href="https://doc.rust-lang.org/nightly/std/net/ip/struct.Ipv4Addr.html" title="struct std::net::ip::Ipv4Addr">Ipv4Addr</a><br>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#475-479' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Executes an operation of the <code>IP_ADD_MEMBERSHIP</code> type.</p>
<p>This function specifies a new multicast group for this socket to join.
The address must be a valid multicast address, and <code>interface</code> is the
address of the local interface with which the system should join the
multicast group. If it's equal to <code>INADDR_ANY</code> then an appropriate
interface is chosen by the system.</p>
</div><h4 id='method.join_multicast_v6' class="method"><span id='join_multicast_v6.v' class='invisible'><code>pub fn <a href='#method.join_multicast_v6' class='fnname'>join_multicast_v6</a>(<br>&nbsp;&nbsp;&nbsp;&nbsp;&amp;self, <br>&nbsp;&nbsp;&nbsp;&nbsp;multiaddr: &amp;<a class="struct" href="https://doc.rust-lang.org/nightly/std/net/ip/struct.Ipv6Addr.html" title="struct std::net::ip::Ipv6Addr">Ipv6Addr</a>, <br>&nbsp;&nbsp;&nbsp;&nbsp;interface: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a><br>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#486-490' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Executes an operation of the <code>IPV6_ADD_MEMBERSHIP</code> type.</p>
<p>This function specifies a new multicast group for this socket to join.
The address must be a valid multicast address, and <code>interface</code> is the
index of the interface to join/leave (or 0 to indicate any interface).</p>
</div><h4 id='method.leave_multicast_v4' class="method"><span id='leave_multicast_v4.v' class='invisible'><code>pub fn <a href='#method.leave_multicast_v4' class='fnname'>leave_multicast_v4</a>(<br>&nbsp;&nbsp;&nbsp;&nbsp;&amp;self, <br>&nbsp;&nbsp;&nbsp;&nbsp;multiaddr: &amp;<a class="struct" href="https://doc.rust-lang.org/nightly/std/net/ip/struct.Ipv4Addr.html" title="struct std::net::ip::Ipv4Addr">Ipv4Addr</a>, <br>&nbsp;&nbsp;&nbsp;&nbsp;interface: &amp;<a class="struct" href="https://doc.rust-lang.org/nightly/std/net/ip/struct.Ipv4Addr.html" title="struct std::net::ip::Ipv4Addr">Ipv4Addr</a><br>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#498-502' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Executes an operation of the <code>IP_DROP_MEMBERSHIP</code> type.</p>
<p>For more information about this option, see
<a href="#method.join_multicast_v4"><code>join_multicast_v4</code></a>.</p>
</div><h4 id='method.leave_multicast_v6' class="method"><span id='leave_multicast_v6.v' class='invisible'><code>pub fn <a href='#method.leave_multicast_v6' class='fnname'>leave_multicast_v6</a>(<br>&nbsp;&nbsp;&nbsp;&nbsp;&amp;self, <br>&nbsp;&nbsp;&nbsp;&nbsp;multiaddr: &amp;<a class="struct" href="https://doc.rust-lang.org/nightly/std/net/ip/struct.Ipv6Addr.html" title="struct std::net::ip::Ipv6Addr">Ipv6Addr</a>, <br>&nbsp;&nbsp;&nbsp;&nbsp;interface: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a><br>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#510-514' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Executes an operation of the <code>IPV6_DROP_MEMBERSHIP</code> type.</p>
<p>For more information about this option, see
<a href="#method.join_multicast_v6"><code>join_multicast_v6</code></a>.</p>
</div><h4 id='method.set_only_v6' class="method"><span id='set_only_v6.v' class='invisible'><code>pub fn <a href='#method.set_only_v6' class='fnname'>set_only_v6</a>(&amp;self, only_v6: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#524-526' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Sets the value for the <code>IPV6_V6ONLY</code> option on this socket.</p>
<p>If this is set to <code>true</code> then the socket is restricted to sending and
receiving IPv6 packets only. In this case two IPv4 and IPv6 applications
can bind the same port at the same time.</p>
<p>If this is set to <code>false</code> then the socket can be used to send and
receive packets from an IPv4-mapped IPv6 address.</p>
</div><h4 id='method.only_v6' class="method"><span id='only_v6.v' class='invisible'><code>pub fn <a href='#method.only_v6' class='fnname'>only_v6</a>(&amp;self) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#533-535' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Gets the value of the <code>IPV6_V6ONLY</code> option for this socket.</p>
<p>For more information about this option, see <a href="#method.set_only_v6"><code>set_only_v6</code></a>.</p>
</div><h4 id='method.take_error' class="method"><span id='take_error.v' class='invisible'><code>pub fn <a href='#method.take_error' class='fnname'>take_error</a>(&amp;self) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>&gt;&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#542-544' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Get the value of the <code>SO_ERROR</code> option on this socket.</p>
<p>This will retrieve the stored error in the underlying socket, clearing
the field in the process. This can be useful for checking errors between
calls.</p>
</div></div>
<h2 id='implementations' class='small-section-header'>
Trait Implementations<a href='#implementations' class='anchor'></a>
</h2>
<h3 id='impl-Evented' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../mio/event/trait.Evented.html" title="trait mio::event::Evented">Evented</a> for <a class="struct" href="../../mio/net/struct.UdpSocket.html" title="struct mio::net::UdpSocket">UdpSocket</a></code><a href='#impl-Evented' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#547-560' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.register' class="method"><span id='register.v' class='invisible'><code>fn <a href='../../mio/event/trait.Evented.html#tymethod.register' class='fnname'>register</a>(<br>&nbsp;&nbsp;&nbsp;&nbsp;&amp;self, <br>&nbsp;&nbsp;&nbsp;&nbsp;poll: &amp;<a class="struct" href="../../mio/struct.Poll.html" title="struct mio::Poll">Poll</a>, <br>&nbsp;&nbsp;&nbsp;&nbsp;token: <a class="struct" href="../../mio/struct.Token.html" title="struct mio::Token">Token</a>, <br>&nbsp;&nbsp;&nbsp;&nbsp;interest: <a class="struct" href="../../mio/struct.Ready.html" title="struct mio::Ready">Ready</a>, <br>&nbsp;&nbsp;&nbsp;&nbsp;opts: <a class="struct" href="../../mio/struct.PollOpt.html" title="struct mio::PollOpt">PollOpt</a><br>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#548-551' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Register <code>self</code> with the given <code>Poll</code> instance. <a href="../../mio/event/trait.Evented.html#tymethod.register">Read more</a></p>
</div><h4 id='method.reregister' class="method"><span id='reregister.v' class='invisible'><code>fn <a href='../../mio/event/trait.Evented.html#tymethod.reregister' class='fnname'>reregister</a>(<br>&nbsp;&nbsp;&nbsp;&nbsp;&amp;self, <br>&nbsp;&nbsp;&nbsp;&nbsp;poll: &amp;<a class="struct" href="../../mio/struct.Poll.html" title="struct mio::Poll">Poll</a>, <br>&nbsp;&nbsp;&nbsp;&nbsp;token: <a class="struct" href="../../mio/struct.Token.html" title="struct mio::Token">Token</a>, <br>&nbsp;&nbsp;&nbsp;&nbsp;interest: <a class="struct" href="../../mio/struct.Ready.html" title="struct mio::Ready">Ready</a>, <br>&nbsp;&nbsp;&nbsp;&nbsp;opts: <a class="struct" href="../../mio/struct.PollOpt.html" title="struct mio::PollOpt">PollOpt</a><br>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#553-555' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Re-register <code>self</code> with the given <code>Poll</code> instance. <a href="../../mio/event/trait.Evented.html#tymethod.reregister">Read more</a></p>
</div><h4 id='method.deregister' class="method"><span id='deregister.v' class='invisible'><code>fn <a href='../../mio/event/trait.Evented.html#tymethod.deregister' class='fnname'>deregister</a>(&amp;self, poll: &amp;<a class="struct" href="../../mio/struct.Poll.html" title="struct mio::Poll">Poll</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/io/error/type.Result.html" title="type std::io::error::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>&gt;</code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#557-559' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Deregister <code>self</code> from the given <code>Poll</code> instance <a href="../../mio/event/trait.Evented.html#tymethod.deregister">Read more</a></p>
</div></div><h3 id='impl-Debug' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="../../mio/net/struct.UdpSocket.html" title="struct mio::net::UdpSocket">UdpSocket</a></code><a href='#impl-Debug' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#562-566' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.fmt' class="method"><span id='fmt.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&amp;self, f: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a>) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#563-565' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
</div></div><h3 id='impl-IntoRawFd' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.IntoRawFd.html" title="trait std::sys::unix::ext::io::IntoRawFd">IntoRawFd</a> for <a class="struct" href="../../mio/net/struct.UdpSocket.html" title="struct mio::net::UdpSocket">UdpSocket</a></code><a href='#impl-IntoRawFd' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#578-582' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.into_raw_fd' class="method"><span id='into_raw_fd.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.IntoRawFd.html#tymethod.into_raw_fd' class='fnname'>into_raw_fd</a>(self) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/type.RawFd.html" title="type std::sys::unix::ext::io::RawFd">RawFd</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#579-581' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Consumes this object, returning the raw underlying file descriptor. <a href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.IntoRawFd.html#tymethod.into_raw_fd">Read more</a></p>
</div></div><h3 id='impl-AsRawFd' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.AsRawFd.html" title="trait std::sys::unix::ext::io::AsRawFd">AsRawFd</a> for <a class="struct" href="../../mio/net/struct.UdpSocket.html" title="struct mio::net::UdpSocket">UdpSocket</a></code><a href='#impl-AsRawFd' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#585-589' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.as_raw_fd' class="method"><span id='as_raw_fd.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.AsRawFd.html#tymethod.as_raw_fd' class='fnname'>as_raw_fd</a>(&amp;self) -&gt; <a class="type" href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/type.RawFd.html" title="type std::sys::unix::ext::io::RawFd">RawFd</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#586-588' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Extracts the raw file descriptor. <a href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.AsRawFd.html#tymethod.as_raw_fd">Read more</a></p>
</div></div><h3 id='impl-FromRawFd' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.FromRawFd.html" title="trait std::sys::unix::ext::io::FromRawFd">FromRawFd</a> for <a class="struct" href="../../mio/net/struct.UdpSocket.html" title="struct mio::net::UdpSocket">UdpSocket</a></code><a href='#impl-FromRawFd' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#592-599' title='goto source code'>[src]</a></span></h3>
<div class='impl-items'><h4 id='method.from_raw_fd' class="method"><span id='from_raw_fd.v' class='invisible'><code>unsafe fn <a href='https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.FromRawFd.html#tymethod.from_raw_fd' class='fnname'>from_raw_fd</a>(fd: <a class="type" href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/type.RawFd.html" title="type std::sys::unix::ext::io::RawFd">RawFd</a>) -&gt; <a class="struct" href="../../mio/net/struct.UdpSocket.html" title="struct mio::net::UdpSocket">UdpSocket</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/mio/net/udp.rs.html#593-598' title='goto source code'>[src]</a></span></h4>
<div class='docblock'><p>Constructs a new instance of <code>Self</code> from the given raw file descriptor. <a href="https://doc.rust-lang.org/nightly/std/sys/unix/ext/io/trait.FromRawFd.html#tymethod.from_raw_fd">Read more</a></p>
</div></div></section>
<section id='search' class="content hidden"></section>
<section class="footer"></section>
<aside id="help" class="hidden">
<div>
<h1 class="hidden">Help</h1>
<div class="shortcuts">
<h2>Keyboard Shortcuts</h2>
<dl>
<dt><kbd>?</kbd></dt>
<dd>Show this help dialog</dd>
<dt><kbd>S</kbd></dt>
<dd>Focus the search field</dd>
<dt><kbd>↑</kbd></dt>
<dd>Move up in search results</dd>
<dt><kbd>↓</kbd></dt>
<dd>Move down in search results</dd>
<dt><kbd>↹</kbd></dt>
<dd>Switch tab</dd>
<dt><kbd>&#9166;</kbd></dt>
<dd>Go to active search result</dd>
<dt><kbd>+</kbd></dt>
<dd>Expand all sections</dd>
<dt><kbd>-</kbd></dt>
<dd>Collapse all sections</dd>
</dl>
</div>
<div class="infos">
<h2>Search Tricks</h2>
<p>
Prefix searches with a type followed by a colon (e.g.
<code>fn:</code>) to restrict the search to a given type.
</p>
<p>
Accepted types are: <code>fn</code>, <code>mod</code>,
<code>struct</code>, <code>enum</code>,
<code>trait</code>, <code>type</code>, <code>macro</code>,
and <code>const</code>.
</p>
<p>
Search functions by type signature (e.g.
<code>vec -> usize</code> or <code>* -> vec</code>)
</p>
</div>
</div>
</aside>
<script>
window.rootPath = "../../";
window.currentCrate = "mio";
</script>
<script src="../../main.js"></script>
<script defer src="../../search-index.js"></script>
</body>
</html>
Reference in a new issue Copy permalink