| <!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 of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/hyper-0.14.26/src/client/connect/dns.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>dns.rs - source</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="../../../../source-script.js"></script><script defer src="../../../../source-files.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 source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><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></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../../hyper/index.html"><img class="rust-logo" src="../../../../rust-logo.svg" alt="logo"></a><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="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="doccomment">//! DNS Resolution used by the `HttpConnector`. |
| //! |
| //! This module contains: |
| //! |
| //! - A [`GaiResolver`](GaiResolver) that is the default resolver for the |
| //! `HttpConnector`. |
| //! - The `Name` type used as an argument to custom resolvers. |
| //! |
| //! # Resolvers are `Service`s |
| //! |
| //! A resolver is just a |
| //! `Service<Name, Response = impl Iterator<Item = SocketAddr>>`. |
| //! |
| //! A simple resolver that ignores the name and always returns a specific |
| //! address: |
| //! |
| //! ```rust,ignore |
| //! use std::{convert::Infallible, iter, net::SocketAddr}; |
| //! |
| //! let resolver = tower::service_fn(|_name| async { |
| //! Ok::<_, Infallible>(iter::once(SocketAddr::from(([127, 0, 0, 1], 8080)))) |
| //! }); |
| //! ``` |
| </span><span class="kw">use </span>std::error::Error; |
| <span class="kw">use </span>std::future::Future; |
| <span class="kw">use </span>std::net::{Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6, ToSocketAddrs}; |
| <span class="kw">use </span>std::pin::Pin; |
| <span class="kw">use </span>std::str::FromStr; |
| <span class="kw">use </span>std::task::{<span class="self">self</span>, Poll}; |
| <span class="kw">use </span>std::{fmt, io, vec}; |
| |
| <span class="kw">use </span>tokio::task::JoinHandle; |
| <span class="kw">use </span>tower_service::Service; |
| <span class="kw">use </span>tracing::debug; |
| |
| <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">use </span><span class="self">self</span>::sealed::Resolve; |
| |
| <span class="doccomment">/// A domain name to resolve into IP addresses. |
| </span><span class="attribute">#[derive(Clone, Hash, Eq, PartialEq)] |
| </span><span class="kw">pub struct </span>Name { |
| host: Box<str>, |
| } |
| |
| <span class="doccomment">/// A resolver using blocking `getaddrinfo` calls in a threadpool. |
| </span><span class="attribute">#[derive(Clone)] |
| </span><span class="kw">pub struct </span>GaiResolver { |
| _priv: (), |
| } |
| |
| <span class="doccomment">/// An iterator of IP addresses returned from `getaddrinfo`. |
| </span><span class="kw">pub struct </span>GaiAddrs { |
| inner: SocketAddrs, |
| } |
| |
| <span class="doccomment">/// A future to resolve a name returned by `GaiResolver`. |
| </span><span class="kw">pub struct </span>GaiFuture { |
| inner: JoinHandle<<span class="prelude-ty">Result</span><SocketAddrs, io::Error>>, |
| } |
| |
| <span class="kw">impl </span>Name { |
| <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>new(host: Box<str>) -> Name { |
| Name { host } |
| } |
| |
| <span class="doccomment">/// View the hostname as a string slice. |
| </span><span class="kw">pub fn </span>as_str(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>str { |
| <span class="kw-2">&</span><span class="self">self</span>.host |
| } |
| } |
| |
| <span class="kw">impl </span>fmt::Debug <span class="kw">for </span>Name { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| fmt::Debug::fmt(<span class="kw-2">&</span><span class="self">self</span>.host, f) |
| } |
| } |
| |
| <span class="kw">impl </span>fmt::Display <span class="kw">for </span>Name { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| fmt::Display::fmt(<span class="kw-2">&</span><span class="self">self</span>.host, f) |
| } |
| } |
| |
| <span class="kw">impl </span>FromStr <span class="kw">for </span>Name { |
| <span class="kw">type </span><span class="prelude-val">Err </span>= InvalidNameError; |
| |
| <span class="kw">fn </span>from_str(host: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, <span class="self">Self</span>::Err> { |
| <span class="comment">// Possibly add validation later |
| </span><span class="prelude-val">Ok</span>(Name::new(host.into())) |
| } |
| } |
| |
| <span class="doccomment">/// Error indicating a given string was not a valid domain name. |
| </span><span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>InvalidNameError(()); |
| |
| <span class="kw">impl </span>fmt::Display <span class="kw">for </span>InvalidNameError { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| f.write_str(<span class="string">"Not a valid domain name"</span>) |
| } |
| } |
| |
| <span class="kw">impl </span>Error <span class="kw">for </span>InvalidNameError {} |
| |
| <span class="kw">impl </span>GaiResolver { |
| <span class="doccomment">/// Construct a new `GaiResolver`. |
| </span><span class="kw">pub fn </span>new() -> <span class="self">Self </span>{ |
| GaiResolver { _priv: () } |
| } |
| } |
| |
| <span class="kw">impl </span>Service<Name> <span class="kw">for </span>GaiResolver { |
| <span class="kw">type </span>Response = GaiAddrs; |
| <span class="kw">type </span>Error = io::Error; |
| <span class="kw">type </span>Future = GaiFuture; |
| |
| <span class="kw">fn </span>poll_ready(<span class="kw-2">&mut </span><span class="self">self</span>, _cx: <span class="kw-2">&mut </span>task::Context<<span class="lifetime">'_</span>>) -> Poll<<span class="prelude-ty">Result</span><(), io::Error>> { |
| Poll::Ready(<span class="prelude-val">Ok</span>(())) |
| } |
| |
| <span class="kw">fn </span>call(<span class="kw-2">&mut </span><span class="self">self</span>, name: Name) -> <span class="self">Self</span>::Future { |
| <span class="kw">let </span>blocking = tokio::task::spawn_blocking(<span class="kw">move </span>|| { |
| <span class="macro">debug!</span>(<span class="string">"resolving host={:?}"</span>, name.host); |
| (<span class="kw-2">&*</span>name.host, <span class="number">0</span>) |
| .to_socket_addrs() |
| .map(|i| SocketAddrs { iter: i }) |
| }); |
| |
| GaiFuture { inner: blocking } |
| } |
| } |
| |
| <span class="kw">impl </span>fmt::Debug <span class="kw">for </span>GaiResolver { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| f.pad(<span class="string">"GaiResolver"</span>) |
| } |
| } |
| |
| <span class="kw">impl </span>Future <span class="kw">for </span>GaiFuture { |
| <span class="kw">type </span>Output = <span class="prelude-ty">Result</span><GaiAddrs, io::Error>; |
| |
| <span class="kw">fn </span>poll(<span class="kw-2">mut </span><span class="self">self</span>: Pin<<span class="kw-2">&mut </span><span class="self">Self</span>>, cx: <span class="kw-2">&mut </span>task::Context<<span class="lifetime">'_</span>>) -> Poll<<span class="self">Self</span>::Output> { |
| Pin::new(<span class="kw-2">&mut </span><span class="self">self</span>.inner).poll(cx).map(|res| <span class="kw">match </span>res { |
| <span class="prelude-val">Ok</span>(<span class="prelude-val">Ok</span>(addrs)) => <span class="prelude-val">Ok</span>(GaiAddrs { inner: addrs }), |
| <span class="prelude-val">Ok</span>(<span class="prelude-val">Err</span>(err)) => <span class="prelude-val">Err</span>(err), |
| <span class="prelude-val">Err</span>(join_err) => { |
| <span class="kw">if </span>join_err.is_cancelled() { |
| <span class="prelude-val">Err</span>(io::Error::new(io::ErrorKind::Interrupted, join_err)) |
| } <span class="kw">else </span>{ |
| <span class="macro">panic!</span>(<span class="string">"gai background task failed: {:?}"</span>, join_err) |
| } |
| } |
| }) |
| } |
| } |
| |
| <span class="kw">impl </span>fmt::Debug <span class="kw">for </span>GaiFuture { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| f.pad(<span class="string">"GaiFuture"</span>) |
| } |
| } |
| |
| <span class="kw">impl </span>Drop <span class="kw">for </span>GaiFuture { |
| <span class="kw">fn </span>drop(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="self">self</span>.inner.abort(); |
| } |
| } |
| |
| <span class="kw">impl </span>Iterator <span class="kw">for </span>GaiAddrs { |
| <span class="kw">type </span>Item = SocketAddr; |
| |
| <span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>::Item> { |
| <span class="self">self</span>.inner.next() |
| } |
| } |
| |
| <span class="kw">impl </span>fmt::Debug <span class="kw">for </span>GaiAddrs { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| f.pad(<span class="string">"GaiAddrs"</span>) |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">struct </span>SocketAddrs { |
| iter: vec::IntoIter<SocketAddr>, |
| } |
| |
| <span class="kw">impl </span>SocketAddrs { |
| <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>new(addrs: Vec<SocketAddr>) -> <span class="self">Self </span>{ |
| SocketAddrs { |
| iter: addrs.into_iter(), |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>try_parse(host: <span class="kw-2">&</span>str, port: u16) -> <span class="prelude-ty">Option</span><SocketAddrs> { |
| <span class="kw">if let </span><span class="prelude-val">Ok</span>(addr) = host.parse::<Ipv4Addr>() { |
| <span class="kw">let </span>addr = SocketAddrV4::new(addr, port); |
| <span class="kw">return </span><span class="prelude-val">Some</span>(SocketAddrs { |
| iter: <span class="macro">vec!</span>[SocketAddr::V4(addr)].into_iter(), |
| }); |
| } |
| <span class="kw">if let </span><span class="prelude-val">Ok</span>(addr) = host.parse::<Ipv6Addr>() { |
| <span class="kw">let </span>addr = SocketAddrV6::new(addr, port, <span class="number">0</span>, <span class="number">0</span>); |
| <span class="kw">return </span><span class="prelude-val">Some</span>(SocketAddrs { |
| iter: <span class="macro">vec!</span>[SocketAddr::V6(addr)].into_iter(), |
| }); |
| } |
| <span class="prelude-val">None |
| </span>} |
| |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>filter(<span class="self">self</span>, predicate: <span class="kw">impl </span>FnMut(<span class="kw-2">&</span>SocketAddr) -> bool) -> SocketAddrs { |
| SocketAddrs::new(<span class="self">self</span>.iter.filter(predicate).collect()) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>split_by_preference( |
| <span class="self">self</span>, |
| local_addr_ipv4: <span class="prelude-ty">Option</span><Ipv4Addr>, |
| local_addr_ipv6: <span class="prelude-ty">Option</span><Ipv6Addr>, |
| ) -> (SocketAddrs, SocketAddrs) { |
| <span class="kw">match </span>(local_addr_ipv4, local_addr_ipv6) { |
| (<span class="prelude-val">Some</span>(<span class="kw">_</span>), <span class="prelude-val">None</span>) => (<span class="self">self</span>.filter(SocketAddr::is_ipv4), SocketAddrs::new(<span class="macro">vec!</span>[])), |
| (<span class="prelude-val">None</span>, <span class="prelude-val">Some</span>(<span class="kw">_</span>)) => (<span class="self">self</span>.filter(SocketAddr::is_ipv6), SocketAddrs::new(<span class="macro">vec!</span>[])), |
| <span class="kw">_ </span>=> { |
| <span class="kw">let </span>preferring_v6 = <span class="self">self |
| </span>.iter |
| .as_slice() |
| .first() |
| .map(SocketAddr::is_ipv6) |
| .unwrap_or(<span class="bool-val">false</span>); |
| |
| <span class="kw">let </span>(preferred, fallback) = <span class="self">self |
| </span>.iter |
| .partition::<Vec<<span class="kw">_</span>>, <span class="kw">_</span>>(|addr| addr.is_ipv6() == preferring_v6); |
| |
| (SocketAddrs::new(preferred), SocketAddrs::new(fallback)) |
| } |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>is_empty(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="self">self</span>.iter.as_slice().is_empty() |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>len(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="self">self</span>.iter.as_slice().len() |
| } |
| } |
| |
| <span class="kw">impl </span>Iterator <span class="kw">for </span>SocketAddrs { |
| <span class="kw">type </span>Item = SocketAddr; |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><SocketAddr> { |
| <span class="self">self</span>.iter.next() |
| } |
| } |
| |
| <span class="comment">/* |
| /// A resolver using `getaddrinfo` calls via the `tokio_executor::threadpool::blocking` API. |
| /// |
| /// Unlike the `GaiResolver` this will not spawn dedicated threads, but only works when running on the |
| /// multi-threaded Tokio runtime. |
| #[cfg(feature = "runtime")] |
| #[derive(Clone, Debug)] |
| pub struct TokioThreadpoolGaiResolver(()); |
| |
| /// The future returned by `TokioThreadpoolGaiResolver`. |
| #[cfg(feature = "runtime")] |
| #[derive(Debug)] |
| pub struct TokioThreadpoolGaiFuture { |
| name: Name, |
| } |
| |
| #[cfg(feature = "runtime")] |
| impl TokioThreadpoolGaiResolver { |
| /// Creates a new DNS resolver that will use tokio threadpool's blocking |
| /// feature. |
| /// |
| /// **Requires** its futures to be run on the threadpool runtime. |
| pub fn new() -> Self { |
| TokioThreadpoolGaiResolver(()) |
| } |
| } |
| |
| #[cfg(feature = "runtime")] |
| impl Service<Name> for TokioThreadpoolGaiResolver { |
| type Response = GaiAddrs; |
| type Error = io::Error; |
| type Future = TokioThreadpoolGaiFuture; |
| |
| fn poll_ready(&mut self, _cx: &mut task::Context<'_>) -> Poll<Result<(), io::Error>> { |
| Poll::Ready(Ok(())) |
| } |
| |
| fn call(&mut self, name: Name) -> Self::Future { |
| TokioThreadpoolGaiFuture { name } |
| } |
| } |
| |
| #[cfg(feature = "runtime")] |
| impl Future for TokioThreadpoolGaiFuture { |
| type Output = Result<GaiAddrs, io::Error>; |
| |
| fn poll(self: Pin<&mut Self>, _cx: &mut task::Context<'_>) -> Poll<Self::Output> { |
| match ready!(tokio_executor::threadpool::blocking(|| ( |
| self.name.as_str(), |
| 0 |
| ) |
| .to_socket_addrs())) |
| { |
| Ok(Ok(iter)) => Poll::Ready(Ok(GaiAddrs { |
| inner: IpAddrs { iter }, |
| })), |
| Ok(Err(e)) => Poll::Ready(Err(e)), |
| // a BlockingError, meaning not on a tokio_executor::threadpool :( |
| Err(e) => Poll::Ready(Err(io::Error::new(io::ErrorKind::Other, e))), |
| } |
| } |
| } |
| */ |
| |
| </span><span class="kw">mod </span>sealed { |
| <span class="kw">use super</span>::{SocketAddr, Name}; |
| <span class="kw">use </span><span class="kw">crate</span>::common::{task, Future, Poll}; |
| <span class="kw">use </span>tower_service::Service; |
| |
| <span class="comment">// "Trait alias" for `Service<Name, Response = Addrs>` |
| </span><span class="kw">pub trait </span>Resolve { |
| <span class="kw">type </span>Addrs: Iterator<Item = SocketAddr>; |
| <span class="kw">type </span>Error: Into<Box<<span class="kw">dyn </span>std::error::Error + Send + Sync>>; |
| <span class="kw">type </span>Future: Future<Output = <span class="prelude-ty">Result</span><<span class="self">Self</span>::Addrs, <span class="self">Self</span>::Error>>; |
| |
| <span class="kw">fn </span>poll_ready(<span class="kw-2">&mut </span><span class="self">self</span>, cx: <span class="kw-2">&mut </span>task::Context<<span class="lifetime">'_</span>>) -> Poll<<span class="prelude-ty">Result</span><(), <span class="self">Self</span>::Error>>; |
| <span class="kw">fn </span>resolve(<span class="kw-2">&mut </span><span class="self">self</span>, name: Name) -> <span class="self">Self</span>::Future; |
| } |
| |
| <span class="kw">impl</span><S> Resolve <span class="kw">for </span>S |
| <span class="kw">where |
| </span>S: Service<Name>, |
| S::Response: Iterator<Item = SocketAddr>, |
| S::Error: Into<Box<<span class="kw">dyn </span>std::error::Error + Send + Sync>>, |
| { |
| <span class="kw">type </span>Addrs = S::Response; |
| <span class="kw">type </span>Error = S::Error; |
| <span class="kw">type </span>Future = S::Future; |
| |
| <span class="kw">fn </span>poll_ready(<span class="kw-2">&mut </span><span class="self">self</span>, cx: <span class="kw-2">&mut </span>task::Context<<span class="lifetime">'_</span>>) -> Poll<<span class="prelude-ty">Result</span><(), <span class="self">Self</span>::Error>> { |
| Service::poll_ready(<span class="self">self</span>, cx) |
| } |
| |
| <span class="kw">fn </span>resolve(<span class="kw-2">&mut </span><span class="self">self</span>, name: Name) -> <span class="self">Self</span>::Future { |
| Service::call(<span class="self">self</span>, name) |
| } |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">async fn </span>resolve<R>(resolver: <span class="kw-2">&mut </span>R, name: Name) -> <span class="prelude-ty">Result</span><R::Addrs, R::Error> |
| <span class="kw">where |
| </span>R: Resolve, |
| { |
| futures_util::future::poll_fn(|cx| resolver.poll_ready(cx)).<span class="kw">await</span><span class="question-mark">?</span>; |
| resolver.resolve(name).<span class="kw">await |
| </span>} |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>tests { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| <span class="kw">use </span>std::net::{Ipv4Addr, Ipv6Addr}; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_ip_addrs_split_by_preference() { |
| <span class="kw">let </span>ip_v4 = Ipv4Addr::new(<span class="number">127</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">1</span>); |
| <span class="kw">let </span>ip_v6 = Ipv6Addr::new(<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">1</span>); |
| <span class="kw">let </span>v4_addr = (ip_v4, <span class="number">80</span>).into(); |
| <span class="kw">let </span>v6_addr = (ip_v6, <span class="number">80</span>).into(); |
| |
| <span class="kw">let </span>(<span class="kw-2">mut </span>preferred, <span class="kw-2">mut </span>fallback) = SocketAddrs { |
| iter: <span class="macro">vec!</span>[v4_addr, v6_addr].into_iter(), |
| } |
| .split_by_preference(<span class="prelude-val">None</span>, <span class="prelude-val">None</span>); |
| <span class="macro">assert!</span>(preferred.next().unwrap().is_ipv4()); |
| <span class="macro">assert!</span>(fallback.next().unwrap().is_ipv6()); |
| |
| <span class="kw">let </span>(<span class="kw-2">mut </span>preferred, <span class="kw-2">mut </span>fallback) = SocketAddrs { |
| iter: <span class="macro">vec!</span>[v6_addr, v4_addr].into_iter(), |
| } |
| .split_by_preference(<span class="prelude-val">None</span>, <span class="prelude-val">None</span>); |
| <span class="macro">assert!</span>(preferred.next().unwrap().is_ipv6()); |
| <span class="macro">assert!</span>(fallback.next().unwrap().is_ipv4()); |
| |
| <span class="kw">let </span>(<span class="kw-2">mut </span>preferred, <span class="kw-2">mut </span>fallback) = SocketAddrs { |
| iter: <span class="macro">vec!</span>[v4_addr, v6_addr].into_iter(), |
| } |
| .split_by_preference(<span class="prelude-val">Some</span>(ip_v4), <span class="prelude-val">Some</span>(ip_v6)); |
| <span class="macro">assert!</span>(preferred.next().unwrap().is_ipv4()); |
| <span class="macro">assert!</span>(fallback.next().unwrap().is_ipv6()); |
| |
| <span class="kw">let </span>(<span class="kw-2">mut </span>preferred, <span class="kw-2">mut </span>fallback) = SocketAddrs { |
| iter: <span class="macro">vec!</span>[v6_addr, v4_addr].into_iter(), |
| } |
| .split_by_preference(<span class="prelude-val">Some</span>(ip_v4), <span class="prelude-val">Some</span>(ip_v6)); |
| <span class="macro">assert!</span>(preferred.next().unwrap().is_ipv6()); |
| <span class="macro">assert!</span>(fallback.next().unwrap().is_ipv4()); |
| |
| <span class="kw">let </span>(<span class="kw-2">mut </span>preferred, fallback) = SocketAddrs { |
| iter: <span class="macro">vec!</span>[v4_addr, v6_addr].into_iter(), |
| } |
| .split_by_preference(<span class="prelude-val">Some</span>(ip_v4), <span class="prelude-val">None</span>); |
| <span class="macro">assert!</span>(preferred.next().unwrap().is_ipv4()); |
| <span class="macro">assert!</span>(fallback.is_empty()); |
| |
| <span class="kw">let </span>(<span class="kw-2">mut </span>preferred, fallback) = SocketAddrs { |
| iter: <span class="macro">vec!</span>[v4_addr, v6_addr].into_iter(), |
| } |
| .split_by_preference(<span class="prelude-val">None</span>, <span class="prelude-val">Some</span>(ip_v6)); |
| <span class="macro">assert!</span>(preferred.next().unwrap().is_ipv6()); |
| <span class="macro">assert!</span>(fallback.is_empty()); |
| } |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_name_from_str() { |
| <span class="kw">const </span>DOMAIN: <span class="kw-2">&</span>str = <span class="string">"test.example.com"</span>; |
| <span class="kw">let </span>name = Name::from_str(DOMAIN).expect(<span class="string">"Should be a valid domain"</span>); |
| <span class="macro">assert_eq!</span>(name.as_str(), DOMAIN); |
| <span class="macro">assert_eq!</span>(name.to_string(), DOMAIN); |
| } |
| } |
| </code></pre></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> |