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Trac3r-rust/doc/nix/ifaddrs/fn.getifaddrs.html

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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="API documentation for the Rust `getifaddrs` fn in crate `nix`."><meta name="keywords" content="rust, rustlang, rust-lang, getifaddrs"><title>nix::ifaddrs::getifaddrs - Rust</title><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script src="../../storage.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="shortcut icon" href="../../favicon.ico"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></head><body class="rustdoc fn"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">&#9776;</div><a href='../../nix/index.html'><div class='logo-container'><img src='../../rust-logo.png' alt='logo'></div></a><div class="sidebar-elems"><p class='location'><a href='../index.html'>nix</a>::<wbr><a href='index.html'>ifaddrs</a></p><script>window.sidebarCurrent = {name: 'getifaddrs', ty: 'fn', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press S to search, ? for more options…" type="search"></div><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"><h1 class='fqn'><span class='out-of-band'><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>&#x2212;</span>]</a></span><a class='srclink' href='../../src/nix/ifaddrs.rs.html#127-135' title='goto source code'>[src]</a></span><span class='in-band'>Function <a href='../index.html'>nix</a>::<wbr><a href='index.html'>ifaddrs</a>::<wbr><a class="fn" href=''>getifaddrs</a></span></h1><pre class='rust fn'>pub fn getifaddrs() -&gt; <a class="type" href="../../nix/type.Result.html" title="type nix::Result">Result</a>&lt;<a class="struct" href="../../nix/ifaddrs/struct.InterfaceAddressIterator.html" title="struct nix::ifaddrs::InterfaceAddressIterator">InterfaceAddressIterator</a>&gt;</pre><div class='docblock'><p>Get interface addresses using libc's <code>getifaddrs</code></p>
<p>Note that the underlying implementation differs between OSes. Only the
most common address families are supported by the nix crate (due to
lack of time and complexity of testing). The address family is encoded
in the specific variant of <code>SockAddr</code> returned for the fields <code>address</code>,
<code>netmask</code>, <code>broadcast</code>, and <code>destination</code>. For any entry not supported,
the returned list will contain a <code>None</code> entry.</p>
<h1 id="example" class="section-header"><a href="#example">Example</a></h1>
<div class="example-wrap"><pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">addrs</span> <span class="op">=</span> <span class="ident">nix</span>::<span class="ident">ifaddrs</span>::<span class="ident">getifaddrs</span>().<span class="ident">unwrap</span>();
<span class="kw">for</span> <span class="ident">ifaddr</span> <span class="kw">in</span> <span class="ident">addrs</span> {
<span class="kw">match</span> <span class="ident">ifaddr</span>.<span class="ident">address</span> {
<span class="prelude-val">Some</span>(<span class="ident">address</span>) <span class="op">=</span><span class="op">&gt;</span> {
<span class="macro">println</span><span class="macro">!</span>(<span class="string">&quot;interface {} address {}&quot;</span>,
<span class="ident">ifaddr</span>.<span class="ident">interface_name</span>, <span class="ident">address</span>);
},
<span class="prelude-val">None</span> <span class="op">=</span><span class="op">&gt;</span> {
<span class="macro">println</span><span class="macro">!</span>(<span class="string">&quot;interface {} with unsupported address family&quot;</span>,
<span class="ident">ifaddr</span>.<span class="ident">interface_name</span>);
}
}
}</pre></div>
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