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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="DNS Resolution used by the `HttpConnector`."><meta name="keywords" content="rust, rustlang, rust-lang, dns"><title>hyper::client::connect::dns - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../../normalize.css"><link rel="stylesheet" href="../../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../../ayu.css" disabled><link rel="stylesheet" href="../../../../dark.css" disabled><link rel="stylesheet" href="../../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../../storage.js"></script><script defer src="../../../../main.js"></script><noscript><link rel="stylesheet" href="../../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../../favicon.svg"></head><body class="rustdoc mod"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">&#9776;</button><a class="sidebar-logo" href="../../../../hyper/index.html"><div class="logo-container"><img class="rust-logo" src="../../../../rust-logo.svg" alt="logo"></div></a><h2></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../../../../hyper/index.html"><div class="logo-container"><img class="rust-logo" src="../../../../rust-logo.svg" alt="logo"></div></a><h2 class="location"><a href="#">Module dns</a></h2><div class="sidebar-elems"><section><ul class="block"><li><a href="#structs">Structs</a></li></ul></section></div></nav><main><div class="width-limiter"><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn">Module <a href="../../../index.html">hyper</a>::<wbr><a href="../../index.html">client</a>::<wbr><a href="../index.html">connect</a>::<wbr><a class="mod" href="#">dns</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../../../../clipboard.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="srclink" href="../../../../src/hyper/client/connect/dns.rs.html#1-425">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">&#x2212;</span>]</a></span></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>DNS Resolution used by the <code>HttpConnector</code>.</p>
<p>This module contains:</p>
<ul>
<li>A <a href="struct.GaiResolver.html"><code>GaiResolver</code></a> that is the default resolver for the
<code>HttpConnector</code>.</li>
<li>The <code>Name</code> type used as an argument to custom resolvers.</li>
</ul>
<h2 id="resolvers-are-services"><a href="#resolvers-are-services">Resolvers are <code>Service</code>s</a></h2>
<p>A resolver is just a
<code>Service&lt;Name, Response = impl Iterator&lt;Item = SocketAddr&gt;&gt;</code>.</p>
<p>A simple resolver that ignores the name and always returns a specific
address:</p>
<div class="example-wrap ignore"><div class='tooltip'></div><pre class="rust rust-example-rendered"><code><span class="kw">use </span>std::{convert::Infallible, iter, net::SocketAddr};
<span class="kw">let </span>resolver = tower::service_fn(|_name| <span class="kw">async </span>{
<span class="prelude-val">Ok</span>::&lt;<span class="kw">_</span>, Infallible&gt;(iter::once(SocketAddr::from(([<span class="number">127</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">1</span>], <span class="number">8080</span>))))
});</code></pre></div>
</div></details><h2 id="structs" class="small-section-header"><a href="#structs">Structs</a></h2><div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="struct" href="struct.GaiAddrs.html" title="hyper::client::connect::dns::GaiAddrs struct">GaiAddrs</a></div><div class="item-right docblock-short">An iterator of IP addresses returned from <code>getaddrinfo</code>.</div></div><div class="item-row"><div class="item-left module-item"><a class="struct" href="struct.GaiFuture.html" title="hyper::client::connect::dns::GaiFuture struct">GaiFuture</a></div><div class="item-right docblock-short">A future to resolve a name returned by <code>GaiResolver</code>.</div></div><div class="item-row"><div class="item-left module-item"><a class="struct" href="struct.GaiResolver.html" title="hyper::client::connect::dns::GaiResolver struct">GaiResolver</a></div><div class="item-right docblock-short">A resolver using blocking <code>getaddrinfo</code> calls in a threadpool.</div></div><div class="item-row"><div class="item-left module-item"><a class="struct" href="struct.InvalidNameError.html" title="hyper::client::connect::dns::InvalidNameError struct">InvalidNameError</a></div><div class="item-right docblock-short">Error indicating a given string was not a valid domain name.</div></div><div class="item-row"><div class="item-left module-item"><a class="struct" href="struct.Name.html" title="hyper::client::connect::dns::Name struct">Name</a></div><div class="item-right docblock-short">A domain name to resolve into IP addresses.</div></div></div></section></div></main><div id="rustdoc-vars" data-root-path="../../../../" data-current-crate="hyper" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html>