<!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/sys_common/net.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>net.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> <span id="2"> 2</span> <span id="3"> 3</span> <span id="4"> 4</span> <span id="5"> 5</span> <span id="6"> 6</span> <span id="7"> 7</span> <span id="8"> 8</span> <span id="9"> 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id="546">546</span> <span id="547">547</span> <span id="548">548</span> <span id="549">549</span> <span id="550">550</span> <span id="551">551</span> <span id="552">552</span> <span id="553">553</span> <span id="554">554</span> <span id="555">555</span> <span id="556">556</span> <span id="557">557</span> <span id="558">558</span> <span id="559">559</span> <span id="560">560</span> <span id="561">561</span> <span id="562">562</span> <span id="563">563</span> <span id="564">564</span> <span id="565">565</span> <span id="566">566</span> <span id="567">567</span> <span id="568">568</span> <span id="569">569</span> <span id="570">570</span> <span id="571">571</span> <span id="572">572</span> <span id="573">573</span> <span id="574">574</span> <span id="575">575</span> <span id="576">576</span> <span id="577">577</span> <span id="578">578</span> <span id="579">579</span> <span id="580">580</span> <span id="581">581</span> <span id="582">582</span> <span id="583">583</span> <span id="584">584</span> <span id="585">585</span> <span id="586">586</span> <span id="587">587</span> <span id="588">588</span> <span id="589">589</span> <span id="590">590</span> <span id="591">591</span> <span id="592">592</span> <span id="593">593</span> <span id="594">594</span> <span id="595">595</span> <span id="596">596</span> <span id="597">597</span> <span id="598">598</span> <span id="599">599</span> <span id="600">600</span> <span id="601">601</span> <span id="602">602</span> <span id="603">603</span> <span id="604">604</span> <span id="605">605</span> <span id="606">606</span> <span id="607">607</span> <span id="608">608</span> <span id="609">609</span> <span id="610">610</span> <span id="611">611</span> <span id="612">612</span> <span id="613">613</span> <span id="614">614</span> <span id="615">615</span> <span id="616">616</span> <span id="617">617</span> <span id="618">618</span> <span id="619">619</span> <span id="620">620</span> <span id="621">621</span> <span id="622">622</span> <span id="623">623</span> <span id="624">624</span> <span id="625">625</span> <span id="626">626</span> <span id="627">627</span> <span id="628">628</span> </pre><pre class="rust "> <span class="comment">// Copyright 2013-2014 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">cmp</span>; <span class="kw">use</span> <span class="ident">ffi</span>::<span class="ident">CString</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">libc</span>::{<span class="ident">c_int</span>, <span class="ident">c_void</span>}; <span class="kw">use</span> <span class="ident">mem</span>; <span class="kw">use</span> <span class="ident">net</span>::{<span class="ident">SocketAddr</span>, <span class="ident">Shutdown</span>, <span class="ident">Ipv4Addr</span>, <span class="ident">Ipv6Addr</span>}; <span class="kw">use</span> <span class="ident">ptr</span>; <span class="kw">use</span> <span class="ident">sys</span>::<span class="ident">net</span>::{<span class="ident">cvt</span>, <span class="ident">cvt_r</span>, <span class="ident">cvt_gai</span>, <span class="ident">Socket</span>, <span class="ident">init</span>, <span class="ident">wrlen_t</span>}; <span class="kw">use</span> <span class="ident">sys</span>::<span class="ident">net</span>::<span class="ident">netc</span> <span class="kw">as</span> <span class="ident">c</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="attribute">#[<span class="ident">cfg</span>(<span class="ident">any</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"dragonfly"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"freebsd"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"ios"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"macos"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"openbsd"</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">"solaris"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"haiku"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"l4re"</span>))]</span> <span class="kw">use</span> <span class="ident">sys</span>::<span class="ident">net</span>::<span class="ident">netc</span>::<span class="ident">IPV6_JOIN_GROUP</span> <span class="kw">as</span> <span class="ident">IPV6_ADD_MEMBERSHIP</span>; <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">any</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"dragonfly"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"freebsd"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"ios"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"macos"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"openbsd"</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">"solaris"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"haiku"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"l4re"</span>)))]</span> <span class="kw">use</span> <span class="ident">sys</span>::<span class="ident">net</span>::<span class="ident">netc</span>::<span class="ident">IPV6_ADD_MEMBERSHIP</span>; <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">any</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"dragonfly"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"freebsd"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"ios"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"macos"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"openbsd"</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">"solaris"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"haiku"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"l4re"</span>))]</span> <span class="kw">use</span> <span class="ident">sys</span>::<span class="ident">net</span>::<span class="ident">netc</span>::<span class="ident">IPV6_LEAVE_GROUP</span> <span class="kw">as</span> <span class="ident">IPV6_DROP_MEMBERSHIP</span>; <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">any</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"dragonfly"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"freebsd"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"ios"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"macos"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"openbsd"</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">"solaris"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"haiku"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"l4re"</span>)))]</span> <span class="kw">use</span> <span class="ident">sys</span>::<span class="ident">net</span>::<span class="ident">netc</span>::<span class="ident">IPV6_DROP_MEMBERSHIP</span>; <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">any</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"linux"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"dragonfly"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"freebsd"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"openbsd"</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">"haiku"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"bitrig"</span>))]</span> <span class="kw">use</span> <span class="ident">libc</span>::<span class="ident">MSG_NOSIGNAL</span>; <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">any</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"linux"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"dragonfly"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"freebsd"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"openbsd"</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">"haiku"</span>, <span class="ident">target_os</span> <span class="op">=</span> <span class="string">"bitrig"</span>)))]</span> <span class="kw">const</span> <span class="ident">MSG_NOSIGNAL</span>: <span class="ident">c_int</span> <span class="op">=</span> <span class="number">0x0</span>; <span class="comment">////////////////////////////////////////////////////////////////////////////////</span> <span class="comment">// sockaddr and misc bindings</span> <span class="comment">////////////////////////////////////////////////////////////////////////////////</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">setsockopt</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>(<span class="ident">sock</span>: <span class="kw-2">&</span><span class="ident">Socket</span>, <span class="ident">opt</span>: <span class="ident">c_int</span>, <span class="ident">val</span>: <span class="ident">c_int</span>, <span class="ident">payload</span>: <span class="ident">T</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">unsafe</span> { <span class="kw">let</span> <span class="ident">payload</span> <span class="op">=</span> <span class="kw-2">&</span><span class="ident">payload</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">T</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">c_void</span>; <span class="ident">cvt</span>(<span class="ident">c</span>::<span class="ident">setsockopt</span>(<span class="kw-2">*</span><span class="ident">sock</span>.<span class="ident">as_inner</span>(), <span class="ident">opt</span>, <span class="ident">val</span>, <span class="ident">payload</span>, <span class="ident">mem</span>::<span class="ident">size_of</span>::<span class="op"><</span><span class="ident">T</span><span class="op">></span>() <span class="kw">as</span> <span class="ident">c</span>::<span class="ident">socklen_t</span>))<span class="question-mark">?</span>; <span class="prelude-val">Ok</span>(()) } } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">getsockopt</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Copy</span><span class="op">></span>(<span class="ident">sock</span>: <span class="kw-2">&</span><span class="ident">Socket</span>, <span class="ident">opt</span>: <span class="ident">c_int</span>, <span class="ident">val</span>: <span class="ident">c_int</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> { <span class="kw">unsafe</span> { <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">slot</span>: <span class="ident">T</span> <span class="op">=</span> <span class="ident">mem</span>::<span class="ident">zeroed</span>(); <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">len</span> <span class="op">=</span> <span class="ident">mem</span>::<span class="ident">size_of</span>::<span class="op"><</span><span class="ident">T</span><span class="op">></span>() <span class="kw">as</span> <span class="ident">c</span>::<span class="ident">socklen_t</span>; <span class="ident">cvt</span>(<span class="ident">c</span>::<span class="ident">getsockopt</span>(<span class="kw-2">*</span><span class="ident">sock</span>.<span class="ident">as_inner</span>(), <span class="ident">opt</span>, <span class="ident">val</span>, <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">slot</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="kw">_</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="kw">_</span>, <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">len</span>))<span class="question-mark">?</span>; <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">len</span> <span class="kw">as</span> <span class="ident">usize</span>, <span class="ident">mem</span>::<span class="ident">size_of</span>::<span class="op"><</span><span class="ident">T</span><span class="op">></span>()); <span class="prelude-val">Ok</span>(<span class="ident">slot</span>) } } <span class="kw">fn</span> <span class="ident">sockname</span><span class="op"><</span><span class="ident">F</span><span class="op">></span>(<span class="ident">f</span>: <span class="ident">F</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="kw">where</span> <span class="ident">F</span>: <span class="ident">FnOnce</span>(<span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">c</span>::<span class="ident">sockaddr</span>, <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">c</span>::<span class="ident">socklen_t</span>) <span class="op">-></span> <span class="ident">c_int</span> { <span class="kw">unsafe</span> { <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">storage</span>: <span class="ident">c</span>::<span class="ident">sockaddr_storage</span> <span class="op">=</span> <span class="ident">mem</span>::<span class="ident">zeroed</span>(); <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">len</span> <span class="op">=</span> <span class="ident">mem</span>::<span class="ident">size_of_val</span>(<span class="kw-2">&</span><span class="ident">storage</span>) <span class="kw">as</span> <span class="ident">c</span>::<span class="ident">socklen_t</span>; <span class="ident">cvt</span>(<span class="ident">f</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">storage</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="kw">_</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="kw">_</span>, <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">len</span>))<span class="question-mark">?</span>; <span class="ident">sockaddr_to_addr</span>(<span class="kw-2">&</span><span class="ident">storage</span>, <span class="ident">len</span> <span class="kw">as</span> <span class="ident">usize</span>) } } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">sockaddr_to_addr</span>(<span class="ident">storage</span>: <span class="kw-2">&</span><span class="ident">c</span>::<span class="ident">sockaddr_storage</span>, <span class="ident">len</span>: <span class="ident">usize</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="kw">match</span> <span class="ident">storage</span>.<span class="ident">ss_family</span> <span class="kw">as</span> <span class="ident">c_int</span> { <span class="ident">c</span>::<span class="ident">AF_INET</span> <span class="op">=></span> { <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">len</span> <span class="kw">as</span> <span class="ident">usize</span> <span class="op">>=</span> <span class="ident">mem</span>::<span class="ident">size_of</span>::<span class="op"><</span><span class="ident">c</span>::<span class="ident">sockaddr_in</span><span class="op">></span>()); <span class="prelude-val">Ok</span>(<span class="ident">SocketAddr</span>::<span class="ident">V4</span>(<span class="ident">FromInner</span>::<span class="ident">from_inner</span>(<span class="kw">unsafe</span> { <span class="kw-2">*</span>(<span class="ident">storage</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="kw">_</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">c</span>::<span class="ident">sockaddr_in</span>) }))) } <span class="ident">c</span>::<span class="ident">AF_INET6</span> <span class="op">=></span> { <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">len</span> <span class="kw">as</span> <span class="ident">usize</span> <span class="op">>=</span> <span class="ident">mem</span>::<span class="ident">size_of</span>::<span class="op"><</span><span class="ident">c</span>::<span class="ident">sockaddr_in6</span><span class="op">></span>()); <span class="prelude-val">Ok</span>(<span class="ident">SocketAddr</span>::<span class="ident">V6</span>(<span class="ident">FromInner</span>::<span class="ident">from_inner</span>(<span class="kw">unsafe</span> { <span class="kw-2">*</span>(<span class="ident">storage</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="kw">_</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">c</span>::<span class="ident">sockaddr_in6</span>) }))) } <span class="kw">_</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">"invalid argument"</span>)) } } } <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>)]</span> <span class="kw">fn</span> <span class="ident">to_ipv6mr_interface</span>(<span class="ident">value</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="ident">c_int</span> { <span class="ident">value</span> <span class="kw">as</span> <span class="ident">c_int</span> } <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_os</span> <span class="op">=</span> <span class="string">"android"</span>))]</span> <span class="kw">fn</span> <span class="ident">to_ipv6mr_interface</span>(<span class="ident">value</span>: <span class="ident">u32</span>) <span class="op">-></span> ::<span class="ident">libc</span>::<span class="ident">c_uint</span> { <span class="ident">value</span> <span class="kw">as</span> ::<span class="ident">libc</span>::<span class="ident">c_uint</span> } <span class="comment">////////////////////////////////////////////////////////////////////////////////</span> <span class="comment">// get_host_addresses</span> <span class="comment">////////////////////////////////////////////////////////////////////////////////</span> <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">LookupHost</span> { <span class="ident">original</span>: <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">c</span>::<span class="ident">addrinfo</span>, <span class="ident">cur</span>: <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">c</span>::<span class="ident">addrinfo</span>, } <span class="kw">impl</span> <span class="ident">Iterator</span> <span class="kw">for</span> <span class="ident">LookupHost</span> { <span class="kw">type</span> <span class="ident">Item</span> <span class="op">=</span> <span class="ident">SocketAddr</span>; <span class="kw">fn</span> <span class="ident">next</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">SocketAddr</span><span class="op">></span> { <span class="kw">loop</span> { <span class="kw">unsafe</span> { <span class="kw">let</span> <span class="ident">cur</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">cur</span>.<span class="ident">as_ref</span>()<span class="question-mark">?</span>; <span class="self">self</span>.<span class="ident">cur</span> <span class="op">=</span> <span class="ident">cur</span>.<span class="ident">ai_next</span>; <span class="kw">match</span> <span class="ident">sockaddr_to_addr</span>(<span class="ident">mem</span>::<span class="ident">transmute</span>(<span class="ident">cur</span>.<span class="ident">ai_addr</span>), <span class="ident">cur</span>.<span class="ident">ai_addrlen</span> <span class="kw">as</span> <span class="ident">usize</span>) { <span class="prelude-val">Ok</span>(<span class="ident">addr</span>) <span class="op">=></span> <span class="kw">return</span> <span class="prelude-val">Some</span>(<span class="ident">addr</span>), <span class="prelude-val">Err</span>(<span class="kw">_</span>) <span class="op">=></span> <span class="kw">continue</span>, } } } } } <span class="kw">unsafe</span> <span class="kw">impl</span> <span class="ident">Sync</span> <span class="kw">for</span> <span class="ident">LookupHost</span> {} <span class="kw">unsafe</span> <span class="kw">impl</span> <span class="ident">Send</span> <span class="kw">for</span> <span class="ident">LookupHost</span> {} <span class="kw">impl</span> <span class="ident">Drop</span> <span class="kw">for</span> <span class="ident">LookupHost</span> { <span class="kw">fn</span> <span class="ident">drop</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) { <span class="kw">unsafe</span> { <span class="ident">c</span>::<span class="ident">freeaddrinfo</span>(<span class="self">self</span>.<span class="ident">original</span>) } } } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">lookup_host</span>(<span class="ident">host</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">LookupHost</span><span class="op">></span> { <span class="ident">init</span>(); <span class="kw">let</span> <span class="ident">c_host</span> <span class="op">=</span> <span class="ident">CString</span>::<span class="ident">new</span>(<span class="ident">host</span>)<span class="question-mark">?</span>; <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">hints</span>: <span class="ident">c</span>::<span class="ident">addrinfo</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">mem</span>::<span class="ident">zeroed</span>() }; <span class="ident">hints</span>.<span class="ident">ai_socktype</span> <span class="op">=</span> <span class="ident">c</span>::<span class="ident">SOCK_STREAM</span>; <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident">ptr</span>::<span class="ident">null_mut</span>(); <span class="kw">unsafe</span> { <span class="ident">cvt_gai</span>(<span class="ident">c</span>::<span class="ident">getaddrinfo</span>(<span class="ident">c_host</span>.<span class="ident">as_ptr</span>(), <span class="ident">ptr</span>::<span class="ident">null</span>(), <span class="kw-2">&</span><span class="ident">hints</span>, <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">res</span>)).<span class="ident">map</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> { <span class="ident">LookupHost</span> { <span class="ident">original</span>: <span class="ident">res</span>, <span class="ident">cur</span>: <span class="ident">res</span> } }) } } <span class="comment">////////////////////////////////////////////////////////////////////////////////</span> <span class="comment">// TCP streams</span> <span class="comment">////////////////////////////////////////////////////////////////////////////////</span> <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">TcpStream</span> { <span class="ident">inner</span>: <span class="ident">Socket</span>, } <span class="kw">impl</span> <span class="ident">TcpStream</span> { <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">connect</span>(<span class="ident">addr</span>: <span class="kw-2">&</span><span class="ident">SocketAddr</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">TcpStream</span><span class="op">></span> { <span class="ident">init</span>(); <span class="kw">let</span> <span class="ident">sock</span> <span class="op">=</span> <span class="ident">Socket</span>::<span class="ident">new</span>(<span class="ident">addr</span>, <span class="ident">c</span>::<span class="ident">SOCK_STREAM</span>)<span class="question-mark">?</span>; <span class="kw">let</span> (<span class="ident">addrp</span>, <span class="ident">len</span>) <span class="op">=</span> <span class="ident">addr</span>.<span class="ident">into_inner</span>(); <span class="ident">cvt_r</span>(<span class="op">||</span> <span class="kw">unsafe</span> { <span class="ident">c</span>::<span class="ident">connect</span>(<span class="kw-2">*</span><span class="ident">sock</span>.<span class="ident">as_inner</span>(), <span class="ident">addrp</span>, <span class="ident">len</span>) })<span class="question-mark">?</span>; <span class="prelude-val">Ok</span>(<span class="ident">TcpStream</span> { <span class="ident">inner</span>: <span class="ident">sock</span> }) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">connect_timeout</span>(<span class="ident">addr</span>: <span class="kw-2">&</span><span class="ident">SocketAddr</span>, <span class="ident">timeout</span>: <span class="ident">Duration</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">TcpStream</span><span class="op">></span> { <span class="ident">init</span>(); <span class="kw">let</span> <span class="ident">sock</span> <span class="op">=</span> <span class="ident">Socket</span>::<span class="ident">new</span>(<span class="ident">addr</span>, <span class="ident">c</span>::<span class="ident">SOCK_STREAM</span>)<span class="question-mark">?</span>; <span class="ident">sock</span>.<span class="ident">connect_timeout</span>(<span class="ident">addr</span>, <span class="ident">timeout</span>)<span class="question-mark">?</span>; <span class="prelude-val">Ok</span>(<span class="ident">TcpStream</span> { <span class="ident">inner</span>: <span class="ident">sock</span> }) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">socket</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">Socket</span> { <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">into_socket</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">Socket</span> { <span class="self">self</span>.<span class="ident">inner</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="ident">inner</span>.<span class="ident">set_timeout</span>(<span class="ident">dur</span>, <span class="ident">c</span>::<span class="ident">SO_RCVTIMEO</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="ident">inner</span>.<span class="ident">set_timeout</span>(<span class="ident">dur</span>, <span class="ident">c</span>::<span class="ident">SO_SNDTIMEO</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="ident">inner</span>.<span class="ident">timeout</span>(<span class="ident">c</span>::<span class="ident">SO_RCVTIMEO</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="ident">inner</span>.<span class="ident">timeout</span>(<span class="ident">c</span>::<span class="ident">SO_SNDTIMEO</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="ident">inner</span>.<span class="ident">peek</span>(<span class="ident">buf</span>) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">read</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="ident">inner</span>.<span class="ident">read</span>(<span class="ident">buf</span>) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">write</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="kw">let</span> <span class="ident">len</span> <span class="op">=</span> <span class="ident">cmp</span>::<span class="ident">min</span>(<span class="ident">buf</span>.<span class="ident">len</span>(), <span class="op"><</span><span class="ident">wrlen_t</span><span class="op">></span>::<span class="ident">max_value</span>() <span class="kw">as</span> <span class="ident">usize</span>) <span class="kw">as</span> <span class="ident">wrlen_t</span>; <span class="kw">let</span> <span class="ident">ret</span> <span class="op">=</span> <span class="ident">cvt</span>(<span class="kw">unsafe</span> { <span class="ident">c</span>::<span class="ident">send</span>(<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">as_inner</span>(), <span class="ident">buf</span>.<span class="ident">as_ptr</span>() <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">c_void</span>, <span class="ident">len</span>, <span class="ident">MSG_NOSIGNAL</span>) })<span class="question-mark">?</span>; <span class="prelude-val">Ok</span>(<span class="ident">ret</span> <span class="kw">as</span> <span class="ident">usize</span>) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">peer_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="ident">sockname</span>(<span class="op">|</span><span class="ident">buf</span>, <span class="ident">len</span><span class="op">|</span> <span class="kw">unsafe</span> { <span class="ident">c</span>::<span class="ident">getpeername</span>(<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">as_inner</span>(), <span class="ident">buf</span>, <span class="ident">len</span>) }) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">socket_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="ident">sockname</span>(<span class="op">|</span><span class="ident">buf</span>, <span class="ident">len</span><span class="op">|</span> <span class="kw">unsafe</span> { <span class="ident">c</span>::<span class="ident">getsockname</span>(<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">as_inner</span>(), <span class="ident">buf</span>, <span class="ident">len</span>) }) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">shutdown</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">how</span>: <span class="ident">Shutdown</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="ident">inner</span>.<span class="ident">shutdown</span>(<span class="ident">how</span>) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">duplicate</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">TcpStream</span><span class="op">></span> { <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">duplicate</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">s</span><span class="op">|</span> <span class="ident">TcpStream</span> { <span class="ident">inner</span>: <span class="ident">s</span> }) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_nodelay</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">nodelay</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="ident">inner</span>.<span class="ident">set_nodelay</span>(<span class="ident">nodelay</span>) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">nodelay</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="ident">inner</span>.<span class="ident">nodelay</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="ident">setsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">IPPROTO_IP</span>, <span class="ident">c</span>::<span class="ident">IP_TTL</span>, <span class="ident">ttl</span> <span class="kw">as</span> <span class="ident">c_int</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="kw">let</span> <span class="ident">raw</span>: <span class="ident">c_int</span> <span class="op">=</span> <span class="ident">getsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">IPPROTO_IP</span>, <span class="ident">c</span>::<span class="ident">IP_TTL</span>)<span class="question-mark">?</span>; <span class="prelude-val">Ok</span>(<span class="ident">raw</span> <span class="kw">as</span> <span class="ident">u32</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="ident">inner</span>.<span class="ident">take_error</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="ident">inner</span>.<span class="ident">set_nonblocking</span>(<span class="ident">nonblocking</span>) } } <span class="kw">impl</span> <span class="ident">FromInner</span><span class="op"><</span><span class="ident">Socket</span><span class="op">></span> <span class="kw">for</span> <span class="ident">TcpStream</span> { <span class="kw">fn</span> <span class="ident">from_inner</span>(<span class="ident">socket</span>: <span class="ident">Socket</span>) <span class="op">-></span> <span class="ident">TcpStream</span> { <span class="ident">TcpStream</span> { <span class="ident">inner</span>: <span class="ident">socket</span> } } } <span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">TcpStream</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="kw">let</span> <span class="kw-2">mut</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident">f</span>.<span class="ident">debug_struct</span>(<span class="string">"TcpStream"</span>); <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>(<span class="ident">addr</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">socket_addr</span>() { <span class="ident">res</span>.<span class="ident">field</span>(<span class="string">"addr"</span>, <span class="kw-2">&</span><span class="ident">addr</span>); } <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>(<span class="ident">peer</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">peer_addr</span>() { <span class="ident">res</span>.<span class="ident">field</span>(<span class="string">"peer"</span>, <span class="kw-2">&</span><span class="ident">peer</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="ident">res</span>.<span class="ident">field</span>(<span class="ident">name</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">as_inner</span>()) .<span class="ident">finish</span>() } } <span class="comment">////////////////////////////////////////////////////////////////////////////////</span> <span class="comment">// TCP listeners</span> <span class="comment">////////////////////////////////////////////////////////////////////////////////</span> <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">TcpListener</span> { <span class="ident">inner</span>: <span class="ident">Socket</span>, } <span class="kw">impl</span> <span class="ident">TcpListener</span> { <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">bind</span>(<span class="ident">addr</span>: <span class="kw-2">&</span><span class="ident">SocketAddr</span>) <span class="op">-></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">TcpListener</span><span class="op">></span> { <span class="ident">init</span>(); <span class="kw">let</span> <span class="ident">sock</span> <span class="op">=</span> <span class="ident">Socket</span>::<span class="ident">new</span>(<span class="ident">addr</span>, <span class="ident">c</span>::<span class="ident">SOCK_STREAM</span>)<span class="question-mark">?</span>; <span class="comment">// On platforms with Berkeley-derived sockets, this allows</span> <span class="comment">// to quickly rebind a socket, without needing to wait for</span> <span class="comment">// the OS to clean up the previous one.</span> <span class="kw">if</span> <span class="op">!</span><span class="macro">cfg</span><span class="macro">!</span>(<span class="ident">windows</span>) { <span class="ident">setsockopt</span>(<span class="kw-2">&</span><span class="ident">sock</span>, <span class="ident">c</span>::<span class="ident">SOL_SOCKET</span>, <span class="ident">c</span>::<span class="ident">SO_REUSEADDR</span>, <span class="number">1</span> <span class="kw">as</span> <span class="ident">c_int</span>)<span class="question-mark">?</span>; } <span class="comment">// Bind our new socket</span> <span class="kw">let</span> (<span class="ident">addrp</span>, <span class="ident">len</span>) <span class="op">=</span> <span class="ident">addr</span>.<span class="ident">into_inner</span>(); <span class="ident">cvt</span>(<span class="kw">unsafe</span> { <span class="ident">c</span>::<span class="ident">bind</span>(<span class="kw-2">*</span><span class="ident">sock</span>.<span class="ident">as_inner</span>(), <span class="ident">addrp</span>, <span class="ident">len</span> <span class="kw">as</span> <span class="kw">_</span>) })<span class="question-mark">?</span>; <span class="comment">// Start listening</span> <span class="ident">cvt</span>(<span class="kw">unsafe</span> { <span class="ident">c</span>::<span class="ident">listen</span>(<span class="kw-2">*</span><span class="ident">sock</span>.<span class="ident">as_inner</span>(), <span class="number">128</span>) })<span class="question-mark">?</span>; <span class="prelude-val">Ok</span>(<span class="ident">TcpListener</span> { <span class="ident">inner</span>: <span class="ident">sock</span> }) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">socket</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">Socket</span> { <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">into_socket</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">Socket</span> { <span class="self">self</span>.<span class="ident">inner</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">socket_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="ident">sockname</span>(<span class="op">|</span><span class="ident">buf</span>, <span class="ident">len</span><span class="op">|</span> <span class="kw">unsafe</span> { <span class="ident">c</span>::<span class="ident">getsockname</span>(<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">as_inner</span>(), <span class="ident">buf</span>, <span class="ident">len</span>) }) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">accept</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">TcpStream</span>, <span class="ident">SocketAddr</span>)<span class="op">></span> { <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">storage</span>: <span class="ident">c</span>::<span class="ident">sockaddr_storage</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">mem</span>::<span class="ident">zeroed</span>() }; <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">len</span> <span class="op">=</span> <span class="ident">mem</span>::<span class="ident">size_of_val</span>(<span class="kw-2">&</span><span class="ident">storage</span>) <span class="kw">as</span> <span class="ident">c</span>::<span class="ident">socklen_t</span>; <span class="kw">let</span> <span class="ident">sock</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">accept</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">storage</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="kw">_</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="kw">_</span>, <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">len</span>)<span class="question-mark">?</span>; <span class="kw">let</span> <span class="ident">addr</span> <span class="op">=</span> <span class="ident">sockaddr_to_addr</span>(<span class="kw-2">&</span><span class="ident">storage</span>, <span class="ident">len</span> <span class="kw">as</span> <span class="ident">usize</span>)<span class="question-mark">?</span>; <span class="prelude-val">Ok</span>((<span class="ident">TcpStream</span> { <span class="ident">inner</span>: <span class="ident">sock</span>, }, <span class="ident">addr</span>)) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">duplicate</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">TcpListener</span><span class="op">></span> { <span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">duplicate</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">s</span><span class="op">|</span> <span class="ident">TcpListener</span> { <span class="ident">inner</span>: <span class="ident">s</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="ident">setsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">IPPROTO_IP</span>, <span class="ident">c</span>::<span class="ident">IP_TTL</span>, <span class="ident">ttl</span> <span class="kw">as</span> <span class="ident">c_int</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="kw">let</span> <span class="ident">raw</span>: <span class="ident">c_int</span> <span class="op">=</span> <span class="ident">getsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">IPPROTO_IP</span>, <span class="ident">c</span>::<span class="ident">IP_TTL</span>)<span class="question-mark">?</span>; <span class="prelude-val">Ok</span>(<span class="ident">raw</span> <span class="kw">as</span> <span class="ident">u32</span>) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_only_v6</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">only_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="ident">setsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">IPPROTO_IPV6</span>, <span class="ident">c</span>::<span class="ident">IPV6_V6ONLY</span>, <span class="ident">only_v6</span> <span class="kw">as</span> <span class="ident">c_int</span>) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">only_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="kw">let</span> <span class="ident">raw</span>: <span class="ident">c_int</span> <span class="op">=</span> <span class="ident">getsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">IPPROTO_IPV6</span>, <span class="ident">c</span>::<span class="ident">IPV6_V6ONLY</span>)<span class="question-mark">?</span>; <span class="prelude-val">Ok</span>(<span class="ident">raw</span> <span class="op">!=</span> <span class="number">0</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="ident">inner</span>.<span class="ident">take_error</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="ident">inner</span>.<span class="ident">set_nonblocking</span>(<span class="ident">nonblocking</span>) } } <span class="kw">impl</span> <span class="ident">FromInner</span><span class="op"><</span><span class="ident">Socket</span><span class="op">></span> <span class="kw">for</span> <span class="ident">TcpListener</span> { <span class="kw">fn</span> <span class="ident">from_inner</span>(<span class="ident">socket</span>: <span class="ident">Socket</span>) <span class="op">-></span> <span class="ident">TcpListener</span> { <span class="ident">TcpListener</span> { <span class="ident">inner</span>: <span class="ident">socket</span> } } } <span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Debug</span> <span class="kw">for</span> <span class="ident">TcpListener</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="kw">let</span> <span class="kw-2">mut</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident">f</span>.<span class="ident">debug_struct</span>(<span class="string">"TcpListener"</span>); <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>(<span class="ident">addr</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">socket_addr</span>() { <span class="ident">res</span>.<span class="ident">field</span>(<span class="string">"addr"</span>, <span class="kw-2">&</span><span class="ident">addr</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="ident">res</span>.<span class="ident">field</span>(<span class="ident">name</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">as_inner</span>()) .<span class="ident">finish</span>() } } <span class="comment">////////////////////////////////////////////////////////////////////////////////</span> <span class="comment">// UDP</span> <span class="comment">////////////////////////////////////////////////////////////////////////////////</span> <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">UdpSocket</span> { <span class="ident">inner</span>: <span class="ident">Socket</span>, } <span class="kw">impl</span> <span class="ident">UdpSocket</span> { <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">bind</span>(<span class="ident">addr</span>: <span class="kw-2">&</span><span class="ident">SocketAddr</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="ident">init</span>(); <span class="kw">let</span> <span class="ident">sock</span> <span class="op">=</span> <span class="ident">Socket</span>::<span class="ident">new</span>(<span class="ident">addr</span>, <span class="ident">c</span>::<span class="ident">SOCK_DGRAM</span>)<span class="question-mark">?</span>; <span class="kw">let</span> (<span class="ident">addrp</span>, <span class="ident">len</span>) <span class="op">=</span> <span class="ident">addr</span>.<span class="ident">into_inner</span>(); <span class="ident">cvt</span>(<span class="kw">unsafe</span> { <span class="ident">c</span>::<span class="ident">bind</span>(<span class="kw-2">*</span><span class="ident">sock</span>.<span class="ident">as_inner</span>(), <span class="ident">addrp</span>, <span class="ident">len</span> <span class="kw">as</span> <span class="kw">_</span>) })<span class="question-mark">?</span>; <span class="prelude-val">Ok</span>(<span class="ident">UdpSocket</span> { <span class="ident">inner</span>: <span class="ident">sock</span> }) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">socket</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">Socket</span> { <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">into_socket</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">Socket</span> { <span class="self">self</span>.<span class="ident">inner</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">socket_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="ident">sockname</span>(<span class="op">|</span><span class="ident">buf</span>, <span class="ident">len</span><span class="op">|</span> <span class="kw">unsafe</span> { <span class="ident">c</span>::<span class="ident">getsockname</span>(<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">as_inner</span>(), <span class="ident">buf</span>, <span class="ident">len</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="ident">inner</span>.<span class="ident">recv_from</span>(<span class="ident">buf</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="ident">inner</span>.<span class="ident">peek_from</span>(<span class="ident">buf</span>) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">send_to</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">dst</span>: <span class="kw-2">&</span><span class="ident">SocketAddr</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">let</span> <span class="ident">len</span> <span class="op">=</span> <span class="ident">cmp</span>::<span class="ident">min</span>(<span class="ident">buf</span>.<span class="ident">len</span>(), <span class="op"><</span><span class="ident">wrlen_t</span><span class="op">></span>::<span class="ident">max_value</span>() <span class="kw">as</span> <span class="ident">usize</span>) <span class="kw">as</span> <span class="ident">wrlen_t</span>; <span class="kw">let</span> (<span class="ident">dstp</span>, <span class="ident">dstlen</span>) <span class="op">=</span> <span class="ident">dst</span>.<span class="ident">into_inner</span>(); <span class="kw">let</span> <span class="ident">ret</span> <span class="op">=</span> <span class="ident">cvt</span>(<span class="kw">unsafe</span> { <span class="ident">c</span>::<span class="ident">sendto</span>(<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">as_inner</span>(), <span class="ident">buf</span>.<span class="ident">as_ptr</span>() <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">c_void</span>, <span class="ident">len</span>, <span class="ident">MSG_NOSIGNAL</span>, <span class="ident">dstp</span>, <span class="ident">dstlen</span>) })<span class="question-mark">?</span>; <span class="prelude-val">Ok</span>(<span class="ident">ret</span> <span class="kw">as</span> <span class="ident">usize</span>) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">duplicate</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="ident">inner</span>.<span class="ident">duplicate</span>().<span class="ident">map</span>(<span class="op">|</span><span class="ident">s</span><span class="op">|</span> <span class="ident">UdpSocket</span> { <span class="ident">inner</span>: <span class="ident">s</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="ident">inner</span>.<span class="ident">set_timeout</span>(<span class="ident">dur</span>, <span class="ident">c</span>::<span class="ident">SO_RCVTIMEO</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="ident">inner</span>.<span class="ident">set_timeout</span>(<span class="ident">dur</span>, <span class="ident">c</span>::<span class="ident">SO_SNDTIMEO</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="ident">inner</span>.<span class="ident">timeout</span>(<span class="ident">c</span>::<span class="ident">SO_RCVTIMEO</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="ident">inner</span>.<span class="ident">timeout</span>(<span class="ident">c</span>::<span class="ident">SO_SNDTIMEO</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="ident">setsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">SOL_SOCKET</span>, <span class="ident">c</span>::<span class="ident">SO_BROADCAST</span>, <span class="ident">broadcast</span> <span class="kw">as</span> <span class="ident">c_int</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="kw">let</span> <span class="ident">raw</span>: <span class="ident">c_int</span> <span class="op">=</span> <span class="ident">getsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">SOL_SOCKET</span>, <span class="ident">c</span>::<span class="ident">SO_BROADCAST</span>)<span class="question-mark">?</span>; <span class="prelude-val">Ok</span>(<span class="ident">raw</span> <span class="op">!=</span> <span class="number">0</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="ident">setsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">IPPROTO_IP</span>, <span class="ident">c</span>::<span class="ident">IP_MULTICAST_LOOP</span>, <span class="ident">multicast_loop_v4</span> <span class="kw">as</span> <span class="ident">c_int</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="kw">let</span> <span class="ident">raw</span>: <span class="ident">c_int</span> <span class="op">=</span> <span class="ident">getsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">IPPROTO_IP</span>, <span class="ident">c</span>::<span class="ident">IP_MULTICAST_LOOP</span>)<span class="question-mark">?</span>; <span class="prelude-val">Ok</span>(<span class="ident">raw</span> <span class="op">!=</span> <span class="number">0</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="ident">setsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">IPPROTO_IP</span>, <span class="ident">c</span>::<span class="ident">IP_MULTICAST_TTL</span>, <span class="ident">multicast_ttl_v4</span> <span class="kw">as</span> <span class="ident">c_int</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="kw">let</span> <span class="ident">raw</span>: <span class="ident">c_int</span> <span class="op">=</span> <span class="ident">getsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">IPPROTO_IP</span>, <span class="ident">c</span>::<span class="ident">IP_MULTICAST_TTL</span>)<span class="question-mark">?</span>; <span class="prelude-val">Ok</span>(<span class="ident">raw</span> <span class="kw">as</span> <span class="ident">u32</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="ident">setsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">IPPROTO_IPV6</span>, <span class="ident">c</span>::<span class="ident">IPV6_MULTICAST_LOOP</span>, <span class="ident">multicast_loop_v6</span> <span class="kw">as</span> <span class="ident">c_int</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="kw">let</span> <span class="ident">raw</span>: <span class="ident">c_int</span> <span class="op">=</span> <span class="ident">getsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">IPPROTO_IPV6</span>, <span class="ident">c</span>::<span class="ident">IPV6_MULTICAST_LOOP</span>)<span class="question-mark">?</span>; <span class="prelude-val">Ok</span>(<span class="ident">raw</span> <span class="op">!=</span> <span class="number">0</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="kw">let</span> <span class="ident">mreq</span> <span class="op">=</span> <span class="ident">c</span>::<span class="ident">ip_mreq</span> { <span class="ident">imr_multiaddr</span>: <span class="kw-2">*</span><span class="ident">multiaddr</span>.<span class="ident">as_inner</span>(), <span class="ident">imr_interface</span>: <span class="kw-2">*</span><span class="ident">interface</span>.<span class="ident">as_inner</span>(), }; <span class="ident">setsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">IPPROTO_IP</span>, <span class="ident">c</span>::<span class="ident">IP_ADD_MEMBERSHIP</span>, <span class="ident">mreq</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="kw">let</span> <span class="ident">mreq</span> <span class="op">=</span> <span class="ident">c</span>::<span class="ident">ipv6_mreq</span> { <span class="ident">ipv6mr_multiaddr</span>: <span class="kw-2">*</span><span class="ident">multiaddr</span>.<span class="ident">as_inner</span>(), <span class="ident">ipv6mr_interface</span>: <span class="ident">to_ipv6mr_interface</span>(<span class="ident">interface</span>), }; <span class="ident">setsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">IPPROTO_IPV6</span>, <span class="ident">IPV6_ADD_MEMBERSHIP</span>, <span class="ident">mreq</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="kw">let</span> <span class="ident">mreq</span> <span class="op">=</span> <span class="ident">c</span>::<span class="ident">ip_mreq</span> { <span class="ident">imr_multiaddr</span>: <span class="kw-2">*</span><span class="ident">multiaddr</span>.<span class="ident">as_inner</span>(), <span class="ident">imr_interface</span>: <span class="kw-2">*</span><span class="ident">interface</span>.<span class="ident">as_inner</span>(), }; <span class="ident">setsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">IPPROTO_IP</span>, <span class="ident">c</span>::<span class="ident">IP_DROP_MEMBERSHIP</span>, <span class="ident">mreq</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="kw">let</span> <span class="ident">mreq</span> <span class="op">=</span> <span class="ident">c</span>::<span class="ident">ipv6_mreq</span> { <span class="ident">ipv6mr_multiaddr</span>: <span class="kw-2">*</span><span class="ident">multiaddr</span>.<span class="ident">as_inner</span>(), <span class="ident">ipv6mr_interface</span>: <span class="ident">to_ipv6mr_interface</span>(<span class="ident">interface</span>), }; <span class="ident">setsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">IPPROTO_IPV6</span>, <span class="ident">IPV6_DROP_MEMBERSHIP</span>, <span class="ident">mreq</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="ident">setsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">IPPROTO_IP</span>, <span class="ident">c</span>::<span class="ident">IP_TTL</span>, <span class="ident">ttl</span> <span class="kw">as</span> <span class="ident">c_int</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="kw">let</span> <span class="ident">raw</span>: <span class="ident">c_int</span> <span class="op">=</span> <span class="ident">getsockopt</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>, <span class="ident">c</span>::<span class="ident">IPPROTO_IP</span>, <span class="ident">c</span>::<span class="ident">IP_TTL</span>)<span class="question-mark">?</span>; <span class="prelude-val">Ok</span>(<span class="ident">raw</span> <span class="kw">as</span> <span class="ident">u32</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="ident">inner</span>.<span class="ident">take_error</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="ident">inner</span>.<span class="ident">set_nonblocking</span>(<span class="ident">nonblocking</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="ident">inner</span>.<span class="ident">read</span>(<span class="ident">buf</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="ident">inner</span>.<span class="ident">peek</span>(<span class="ident">buf</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="kw">let</span> <span class="ident">len</span> <span class="op">=</span> <span class="ident">cmp</span>::<span class="ident">min</span>(<span class="ident">buf</span>.<span class="ident">len</span>(), <span class="op"><</span><span class="ident">wrlen_t</span><span class="op">></span>::<span class="ident">max_value</span>() <span class="kw">as</span> <span class="ident">usize</span>) <span class="kw">as</span> <span class="ident">wrlen_t</span>; <span class="kw">let</span> <span class="ident">ret</span> <span class="op">=</span> <span class="ident">cvt</span>(<span class="kw">unsafe</span> { <span class="ident">c</span>::<span class="ident">send</span>(<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">as_inner</span>(), <span class="ident">buf</span>.<span class="ident">as_ptr</span>() <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">c_void</span>, <span class="ident">len</span>, <span class="ident">MSG_NOSIGNAL</span>) })<span class="question-mark">?</span>; <span class="prelude-val">Ok</span>(<span class="ident">ret</span> <span class="kw">as</span> <span class="ident">usize</span>) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">connect</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">addr</span>: <span class="kw-2">&</span><span class="ident">SocketAddr</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">let</span> (<span class="ident">addrp</span>, <span class="ident">len</span>) <span class="op">=</span> <span class="ident">addr</span>.<span class="ident">into_inner</span>(); <span class="ident">cvt_r</span>(<span class="op">||</span> <span class="kw">unsafe</span> { <span class="ident">c</span>::<span class="ident">connect</span>(<span class="kw-2">*</span><span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">as_inner</span>(), <span class="ident">addrp</span>, <span class="ident">len</span>) }).<span class="ident">map</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> ()) } } <span class="kw">impl</span> <span class="ident">FromInner</span><span class="op"><</span><span class="ident">Socket</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">socket</span>: <span class="ident">Socket</span>) <span class="op">-></span> <span class="ident">UdpSocket</span> { <span class="ident">UdpSocket</span> { <span class="ident">inner</span>: <span class="ident">socket</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="kw">let</span> <span class="kw-2">mut</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident">f</span>.<span class="ident">debug_struct</span>(<span class="string">"UdpSocket"</span>); <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Ok</span>(<span class="ident">addr</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">socket_addr</span>() { <span class="ident">res</span>.<span class="ident">field</span>(<span class="string">"addr"</span>, <span class="kw-2">&</span><span class="ident">addr</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="ident">res</span>.<span class="ident">field</span>(<span class="ident">name</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">as_inner</span>()) .<span class="ident">finish</span>() } } <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span> <span class="kw">mod</span> <span class="ident">tests</span> { <span class="kw">use</span> <span class="kw">super</span>::<span class="kw-2">*</span>; <span class="kw">use</span> <span class="ident">collections</span>::<span class="ident">HashMap</span>; <span class="attribute">#[<span class="ident">test</span>]</span> <span class="kw">fn</span> <span class="ident">no_lookup_host_duplicates</span>() { <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">addrs</span> <span class="op">=</span> <span class="ident">HashMap</span>::<span class="ident">new</span>(); <span class="kw">let</span> <span class="ident">lh</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">lookup_host</span>(<span class="string">"localhost"</span>) { <span class="prelude-val">Ok</span>(<span class="ident">lh</span>) <span class="op">=></span> <span class="ident">lh</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">"couldn't resolve `localhost': {}"</span>, <span class="ident">e</span>) }; <span class="kw">let</span> <span class="ident">_na</span> <span class="op">=</span> <span class="ident">lh</span>.<span class="ident">map</span>(<span class="op">|</span><span class="ident">sa</span><span class="op">|</span> <span class="kw-2">*</span><span class="ident">addrs</span>.<span class="ident">entry</span>(<span class="ident">sa</span>).<span class="ident">or_insert</span>(<span class="number">0</span>) <span class="op">+=</span> <span class="number">1</span>).<span class="ident">count</span>(); <span class="macro">assert</span><span class="macro">!</span>(<span class="ident">addrs</span>.<span class="ident">values</span>().<span class="ident">filter</span>(<span class="op">|</span><span class="op">&&</span><span class="ident">v</span><span class="op">|</span> <span class="ident">v</span> <span class="op">></span> <span class="number">1</span>).<span class="ident">count</span>() <span class="op">==</span> <span class="number">0</span>); } } </pre> </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>⏎</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 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