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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="General purpose TCP server that runs services receiving Tokio `TcpStream`s."><title>Server in actix_server - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-46f98efaafac5295.ttf.woff2,FiraSans-Regular-018c141bf0843ffd.woff2,FiraSans-Medium-8f9a781e4970d388.woff2,SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2,SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../static.files/rustdoc-b778ab399e080a4b.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="actix_server" data-themes="" data-resource-suffix="" data-rustdoc-version="1.83.0-nightly (7608018cb 2024-09-29)" data-channel="nightly" data-search-js="search-e056c65ede92db13.js" data-settings-js="settings-805db61a62df4bd2.js" ><script src="../static.files/storage-1d39b6787ed640ff.js"></script><script defer src="sidebar-items.js"></script><script defer src="../static.files/main-54bc299d2a5e4e43.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-0111fcff984fae8f.css"></noscript><link rel="icon" href="https://actix.rs/favicon.ico"></head><body class="rustdoc struct"><!--[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" title="show sidebar"></button><a class="logo-container" href="../actix_server/index.html"><img src="https://actix.rs/img/logo.png" alt=""></a></nav><nav class="sidebar"><div class="sidebar-crate"><a class="logo-container" href="../actix_server/index.html"><img src="https://actix.rs/img/logo.png" alt="logo"></a><h2><a href="../actix_server/index.html">actix_<wbr>server</a><span class="version">2.5.0</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Server</a></h2><h3><a href="#">Sections</a></h3><ul class="block top-toc"><li><a href="#shutdown-signals" title="Shutdown Signals">Shutdown Signals</a></li><li><a href="#examples" title="Examples">Examples</a></li></ul><h3><a href="#implementations">Methods</a></h3><ul class="block method"><li><a href="#method.build" title="build">build</a></li><li><a href="#method.handle" title="handle">handle</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block trait-implementation"><li><a href="#impl-Future-for-Server" title="Future">Future</a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block synthetic-implementation"><li><a href="#impl-RefUnwindSafe-for-Server" title="!RefUnwindSafe">!RefUnwindSafe</a></li><li><a href="#impl-Sync-for-Server" title="!Sync">!Sync</a></li><li><a href="#impl-UnwindSafe-for-Server" title="!UnwindSafe">!UnwindSafe</a></li><li><a href="#impl-Freeze-for-Server" title="Freeze">Freeze</a></li><li><a href="#impl-Send-for-Server" title="Send">Send</a></li><li><a href="#impl-Unpin-for-Server" title="Unpin">Unpin</a></li></ul><h3><a href="#blanket-implementations">Blanket Implementations</a></h3><ul class="block blanket-implementation"><li><a href="#impl-Any-for-T" title="Any">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-T" title="Borrow&#60;T&#62;">Borrow&#60;T&#62;</a></li><li><a href="#impl-BorrowMut%3CT%3E-for-T" title="BorrowMut&#60;T&#62;">BorrowMut&#60;T&#62;</a></li><li><a href="#impl-From%3CT%3E-for-T" title="From&#60;T&#62;">From&#60;T&#62;</a></li><li><a href="#impl-FutureExt-for-T" title="FutureExt">FutureExt</a></li><li><a href="#impl-Instrument-for-T" title="Instrument">Instrument</a></li><li><a href="#impl-Into%3CU%3E-for-T" title="Into&#60;U&#62;">Into&#60;U&#62;</a></li><li><a href="#impl-IntoFuture-for-F" title="IntoFuture">IntoFuture</a></li><li><a href="#impl-TryFrom%3CU%3E-for-T" title="TryFrom&#60;U&#62;">TryFrom&#60;U&#62;</a></li><li><a href="#impl-TryFuture-for-F" title="TryFuture">TryFuture</a></li><li><a href="#impl-TryFutureExt-for-Fut" title="TryFutureExt">TryFutureExt</a></li><li><a href="#impl-TryInto%3CU%3E-for-T" title="TryInto&#60;U&#62;">TryInto&#60;U&#62;</a></li><li><a href="#impl-WithSubscriber-for-T" title="WithSubscriber">WithSubscriber</a></li></ul></section><div id="rustdoc-modnav"><h2 class="in-crate"><a href="index.html">In crate actix_<wbr>server</a></h2></div></div></nav><div class="sidebar-resizer"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><span class="rustdoc-breadcrumbs"><a href="index.html">actix_server</a></span><h1>Struct <span class="struct">Server</span><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../src/actix_server/server.rs.html#125-128">source</a> </span></div><pre class="rust item-decl"><code>pub struct Server { <span class="comment">/* private fields */</span> }</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>General purpose TCP server that runs services receiving Tokio <code>TcpStream</code>s.</p>
<p>Handles creating worker threads, restarting faulted workers, connection accepting, and
back-pressure logic.</p>
<p>Creates a worker per CPU core (or the number specified in <a href="struct.ServerBuilder.html#method.workers" title="method actix_server::ServerBuilder::workers"><code>ServerBuilder::workers</code></a>) and
distributes connections with a round-robin strategy.</p>
<p>The <a href="struct.Server.html" title="struct actix_server::Server">Server</a> must be awaited or polled in order to start running. It will resolve when the
server has fully shut down.</p>
<h2 id="shutdown-signals"><a class="doc-anchor" href="#shutdown-signals">§</a>Shutdown Signals</h2>
<p>On UNIX systems, <code>SIGTERM</code> will start a graceful shutdown and <code>SIGQUIT</code> or <code>SIGINT</code> will start a
forced shutdown. On Windows, a Ctrl-C signal will start a forced shutdown.</p>
<p>A graceful shutdown will wait for all workers to stop first.</p>
<h2 id="examples"><a class="doc-anchor" href="#examples">§</a>Examples</h2>
<p>The following is a TCP echo server. Test using <code>telnet 127.0.0.1 8080</code>.</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>std::io;
<span class="kw">use </span>actix_rt::net::TcpStream;
<span class="kw">use </span>actix_server::Server;
<span class="kw">use </span>actix_service::{fn_service, ServiceFactoryExt <span class="kw">as _</span>};
<span class="kw">use </span>bytes::BytesMut;
<span class="kw">use </span>tokio::io::{AsyncReadExt <span class="kw">as _</span>, AsyncWriteExt <span class="kw">as _</span>};
<span class="attr">#[actix_rt::main]
</span><span class="kw">async fn </span>main() -&gt; io::Result&lt;()&gt; {
<span class="kw">let </span>bind_addr = (<span class="string">"127.0.0.1"</span>, <span class="number">8080</span>);
Server::build()
.bind(<span class="string">"echo"</span>, bind_addr, <span class="kw">move </span>|| {
fn_service(<span class="kw">move </span>|<span class="kw-2">mut </span>stream: TcpStream| {
<span class="kw">async move </span>{
<span class="kw">let </span><span class="kw-2">mut </span>size = <span class="number">0</span>;
<span class="kw">let </span><span class="kw-2">mut </span>buf = BytesMut::new();
<span class="kw">loop </span>{
<span class="kw">match </span>stream.read_buf(<span class="kw-2">&amp;mut </span>buf).<span class="kw">await </span>{
<span class="comment">// end of stream; bail from loop
</span><span class="prelude-val">Ok</span>(<span class="number">0</span>) =&gt; <span class="kw">break</span>,
<span class="comment">// write bytes back to stream
</span><span class="prelude-val">Ok</span>(bytes_read) =&gt; {
stream.write_all(<span class="kw-2">&amp;</span>buf[size..]).<span class="kw">await</span>.unwrap();
size += bytes_read;
}
<span class="prelude-val">Err</span>(err) =&gt; {
<span class="macro">eprintln!</span>(<span class="string">"Stream Error: {:?}"</span>, err);
<span class="kw">return </span><span class="prelude-val">Err</span>(());
}
}
}
<span class="prelude-val">Ok</span>(())
}
})
.map_err(|err| <span class="macro">eprintln!</span>(<span class="string">"Service Error: {:?}"</span>, err))
})<span class="question-mark">?
</span>.run()
.<span class="kw">await
</span>}</code></pre></div>
</div></details><h2 id="implementations" class="section-header">Implementations<a href="#implementations" class="anchor">§</a></h2><div id="implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-Server" class="impl"><a class="src rightside" href="../src/actix_server/server.rs.html#130-149">source</a><a href="#impl-Server" class="anchor">§</a><h3 class="code-header">impl <a class="struct" href="struct.Server.html" title="struct actix_server::Server">Server</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.build" class="method"><a class="src rightside" href="../src/actix_server/server.rs.html#132-134">source</a><h4 class="code-header">pub fn <a href="#method.build" class="fn">build</a>() -&gt; <a class="struct" href="struct.ServerBuilder.html" title="struct actix_server::ServerBuilder">ServerBuilder</a></h4></section></summary><div class="docblock"><p>Create server build.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.handle" class="method"><a class="src rightside" href="../src/actix_server/server.rs.html#146-148">source</a><h4 class="code-header">pub fn <a href="#method.handle" class="fn">handle</a>(&amp;self) -&gt; <a class="struct" href="struct.ServerHandle.html" title="struct actix_server::ServerHandle">ServerHandle</a></h4></section></summary><div class="docblock"><p>Get a <code>Server</code> handle that can be used issue commands and change its state.</p>
<p>See <a href="struct.ServerHandle.html" title="struct actix_server::ServerHandle">ServerHandle</a> for usage.</p>
</div></details></div></details></div><h2 id="trait-implementations" class="section-header">Trait Implementations<a href="#trait-implementations" class="anchor">§</a></h2><div id="trait-implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-Future-for-Server" class="impl"><a class="src rightside" href="../src/actix_server/server.rs.html#151-158">source</a><a href="#impl-Future-for-Server" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> for <a class="struct" href="struct.Server.html" title="struct actix_server::Server">Server</a></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Output" class="associatedtype trait-impl"><a class="src rightside" href="../src/actix_server/server.rs.html#152">source</a><a href="#associatedtype.Output" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" class="associatedtype">Output</a> = <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="https://doc.rust-lang.org/nightly/std/io/error/struct.Error.html" title="struct std::io::error::Error">Error</a>&gt;</h4></section></summary><div class='docblock'>The type of value produced on completion.</div></details><details class="toggle method-toggle" open><summary><section id="method.poll" class="method trait-impl"><a class="src rightside" href="../src/actix_server/server.rs.html#155-157">source</a><a href="#method.poll" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#tymethod.poll" class="fn">poll</a>(self: <a class="struct" href="https://doc.rust-lang.org/nightly/core/pin/struct.Pin.html" title="struct core::pin::Pin">Pin</a>&lt;&amp;mut Self&gt;, cx: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Context.html" title="struct core::task::wake::Context">Context</a>&lt;'_&gt;) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/task/poll/enum.Poll.html" title="enum core::task::poll::Poll">Poll</a>&lt;Self::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>&gt;</h4></section></summary><div class='docblock'>Attempts to resolve the future to a final value, registering
the current task for wakeup if the value is not yet available. <a href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#tymethod.poll">Read more</a></div></details></div></details></div><h2 id="synthetic-implementations" class="section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor">§</a></h2><div id="synthetic-implementations-list"><section id="impl-Freeze-for-Server" class="impl"><a href="#impl-Freeze-for-Server" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Freeze.html" title="trait core::marker::Freeze">Freeze</a> for <a class="struct" href="struct.Server.html" title="struct actix_server::Server">Server</a></h3></section><section id="impl-RefUnwindSafe-for-Server" class="impl"><a href="#impl-RefUnwindSafe-for-Server" class="anchor">§</a><h3 class="code-header">impl !<a class="trait" href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="struct.Server.html" title="struct actix_server::Server">Server</a></h3></section><section id="impl-Send-for-Server" class="impl"><a href="#impl-Send-for-Server" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="struct.Server.html" title="struct actix_server::Server">Server</a></h3></section><section id="impl-Sync-for-Server" class="impl"><a href="#impl-Sync-for-Server" class="anchor">§</a><h3 class="code-header">impl !<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="struct.Server.html" title="struct actix_server::Server">Server</a></h3></section><section id="impl-Unpin-for-Server" class="impl"><a href="#impl-Unpin-for-Server" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="struct.Server.html" title="struct actix_server::Server">Server</a></h3></section><section id="impl-UnwindSafe-for-Server" class="impl"><a href="#impl-UnwindSafe-for-Server" class="anchor">§</a><h3 class="code-header">impl !<a class="trait" href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="struct" href="struct.Server.html" title="struct actix_server::Server">Server</a></h3></section></div><h2 id="blanket-implementations" class="section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor">§</a></h2><div id="blanket-implementations-list"><details class="toggle implementors-toggle"><summary><section id="impl-Any-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#138">source</a><a href="#impl-Any-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T<div class="where">where
T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.type_id" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#139">source</a><a href="#method.type_id" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id" class="fn">type_id</a>(&amp;self) -&gt; <a class="struct" href="https://doc.rust-lang.org/nightly/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></h4></section></summary><div class='docblock'>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#209">source</a><a href="#impl-Borrow%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a>&lt;T&gt; for T<div class="where">where
T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#211">source</a><a href="#method.borrow" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow" class="fn">borrow</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;T</a></h4></section></summary><div class='docblock'>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#217">source</a><a href="#impl-BorrowMut%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a>&lt;T&gt; for T<div class="where">where
T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow_mut" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#218">source</a><a href="#method.borrow_mut" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fn">borrow_mut</a>(&amp;mut self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut T</a></h4></section></summary><div class='docblock'>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-From%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#765">source</a><a href="#impl-From%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt; for T</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#768">source</a><a href="#method.from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(t: T) -&gt; T</h4></section></summary><div class="docblock"><p>Returns the argument unchanged.</p>
</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-FutureExt-for-T" class="impl"><a href="#impl-FutureExt-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; FutureExt for T<div class="where">where
T: <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.map" class="method trait-impl"><a href="#method.map" class="anchor">§</a><h4 class="code-header">fn <a class="fn">map</a>&lt;U, F&gt;(self, f: F) -&gt; Map&lt;Self, F&gt;<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(Self::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>) -&gt; U,
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Map this futures output to a different type, returning a new future of
the resulting type. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.map_into" class="method trait-impl"><a href="#method.map_into" class="anchor">§</a><h4 class="code-header">fn <a class="fn">map_into</a>&lt;U&gt;(self) -&gt; MapInto&lt;Self, U&gt;<div class="where">where
Self::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;U&gt;,
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Map this futures output to a different type, returning a new future of
the resulting type. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.then" class="method trait-impl"><a href="#method.then" class="anchor">§</a><h4 class="code-header">fn <a class="fn">then</a>&lt;Fut, F&gt;(self, f: F) -&gt; Then&lt;Self, Fut, F&gt;<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(Self::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>) -&gt; Fut,
Fut: <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>,
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Chain on a computation for when a future finished, passing the result of
the future to the provided closure <code>f</code>. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.left_future" class="method trait-impl"><a href="#method.left_future" class="anchor">§</a><h4 class="code-header">fn <a class="fn">left_future</a>&lt;B&gt;(self) -&gt; Either&lt;Self, B&gt;<div class="where">where
B: <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>&lt;Output = Self::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>&gt;,
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Wrap this future in an <code>Either</code> future, making it the left-hand variant
of that <code>Either</code>. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.right_future" class="method trait-impl"><a href="#method.right_future" class="anchor">§</a><h4 class="code-header">fn <a class="fn">right_future</a>&lt;A&gt;(self) -&gt; Either&lt;A, Self&gt;<div class="where">where
A: <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>&lt;Output = Self::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>&gt;,
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Wrap this future in an <code>Either</code> future, making it the right-hand variant
of that <code>Either</code>. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.into_stream" class="method trait-impl"><a href="#method.into_stream" class="anchor">§</a><h4 class="code-header">fn <a class="fn">into_stream</a>(self) -&gt; IntoStream&lt;Self&gt;<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Convert this future into a single element stream. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.flatten" class="method trait-impl"><a href="#method.flatten" class="anchor">§</a><h4 class="code-header">fn <a class="fn">flatten</a>(self) -&gt; Flatten&lt;Self&gt;<div class="where">where
Self::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>: <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>,
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Flatten the execution of this future when the output of this
future is itself another future. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.flatten_stream" class="method trait-impl"><a href="#method.flatten_stream" class="anchor">§</a><h4 class="code-header">fn <a class="fn">flatten_stream</a>(self) -&gt; FlattenStream&lt;Self&gt;<div class="where">where
Self::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>: Stream,
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Flatten the execution of this future when the successful result of this
future is a stream. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.fuse" class="method trait-impl"><a href="#method.fuse" class="anchor">§</a><h4 class="code-header">fn <a class="fn">fuse</a>(self) -&gt; Fuse&lt;Self&gt;<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Fuse a future such that <code>poll</code> will never again be called once it has
completed. This method can be used to turn any <code>Future</code> into a
<code>FusedFuture</code>. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.inspect" class="method trait-impl"><a href="#method.inspect" class="anchor">§</a><h4 class="code-header">fn <a class="fn">inspect</a>&lt;F&gt;(self, f: F) -&gt; Inspect&lt;Self, F&gt;<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&amp;Self::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>),
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Do something with the output of a future before passing it on. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.catch_unwind" class="method trait-impl"><a href="#method.catch_unwind" class="anchor">§</a><h4 class="code-header">fn <a class="fn">catch_unwind</a>(self) -&gt; CatchUnwind&lt;Self&gt;<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a>,</div></h4></section></summary><div class='docblock'>Catches unwinding panics while polling the future. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.shared" class="method trait-impl"><a href="#method.shared" class="anchor">§</a><h4 class="code-header">fn <a class="fn">shared</a>(self) -&gt; Shared&lt;Self&gt;<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,
Self::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>: <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</div></h4></section></summary><div class='docblock'>Create a cloneable handle to this future where all handles will resolve
to the same result. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.boxed" class="method trait-impl"><a href="#method.boxed" class="anchor">§</a><h4 class="code-header">fn <a class="fn">boxed</a>&lt;'a&gt;(self) -&gt; <a class="struct" href="https://doc.rust-lang.org/nightly/core/pin/struct.Pin.html" title="struct core::pin::Pin">Pin</a>&lt;<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a>&lt;dyn <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>&lt;Output = Self::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>&gt; + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + 'a&gt;&gt;<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + 'a,</div></h4></section></summary><div class='docblock'>Wrap the future in a Box, pinning it. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.boxed_local" class="method trait-impl"><a href="#method.boxed_local" class="anchor">§</a><h4 class="code-header">fn <a class="fn">boxed_local</a>&lt;'a&gt;(self) -&gt; <a class="struct" href="https://doc.rust-lang.org/nightly/core/pin/struct.Pin.html" title="struct core::pin::Pin">Pin</a>&lt;<a class="struct" href="https://doc.rust-lang.org/nightly/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a>&lt;dyn <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>&lt;Output = Self::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>&gt; + 'a&gt;&gt;<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a,</div></h4></section></summary><div class='docblock'>Wrap the future in a Box, pinning it. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.unit_error" class="method trait-impl"><a href="#method.unit_error" class="anchor">§</a><h4 class="code-header">fn <a class="fn">unit_error</a>(self) -&gt; UnitError&lt;Self&gt;<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Turns a <a href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future"><code>Future&lt;Output = T&gt;</code></a> into a
<a href="futures_core::future::TryFuture"><code>TryFuture&lt;Ok = T, Error = ()</code>&gt;</a>.</div></details><details class="toggle method-toggle" open><summary><section id="method.never_error" class="method trait-impl"><a href="#method.never_error" class="anchor">§</a><h4 class="code-header">fn <a class="fn">never_error</a>(self) -&gt; NeverError&lt;Self&gt;<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Turns a <a href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future"><code>Future&lt;Output = T&gt;</code></a> into a
<a href="futures_core::future::TryFuture"><code>TryFuture&lt;Ok = T, Error = Never</code>&gt;</a>.</div></details><details class="toggle method-toggle" open><summary><section id="method.poll_unpin" class="method trait-impl"><a href="#method.poll_unpin" class="anchor">§</a><h4 class="code-header">fn <a class="fn">poll_unpin</a>(&amp;mut self, cx: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Context.html" title="struct core::task::wake::Context">Context</a>&lt;'_&gt;) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/task/poll/enum.Poll.html" title="enum core::task::poll::Poll">Poll</a>&lt;Self::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>&gt;<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a>,</div></h4></section></summary><div class='docblock'>A convenience for calling <code>Future::poll</code> on <code>Unpin</code> future types.</div></details><details class="toggle method-toggle" open><summary><section id="method.now_or_never" class="method trait-impl"><a href="#method.now_or_never" class="anchor">§</a><h4 class="code-header">fn <a class="fn">now_or_never</a>(self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>&gt;<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Evaluates and consumes the future, returning the resulting output if
the future is ready after the first call to <code>Future::poll</code>. <a>Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Instrument-for-T" class="impl"><a href="#impl-Instrument-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; Instrument for T</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.instrument" class="method trait-impl"><a href="#method.instrument" class="anchor">§</a><h4 class="code-header">fn <a class="fn">instrument</a>(self, span: Span) -&gt; Instrumented&lt;Self&gt;</h4></section></summary><div class='docblock'>Instruments this type with the provided [<code>Span</code>], returning an
<code>Instrumented</code> wrapper. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.in_current_span" class="method trait-impl"><a href="#method.in_current_span" class="anchor">§</a><h4 class="code-header">fn <a class="fn">in_current_span</a>(self) -&gt; Instrumented&lt;Self&gt;</h4></section></summary><div class='docblock'>Instruments this type with the <a href="super::Span::current()">current</a> <a href="crate::Span"><code>Span</code></a>, returning an
<code>Instrumented</code> wrapper. <a>Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#748-750">source</a><a href="#impl-Into%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;U&gt; for T<div class="where">where
U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt;,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#758">source</a><a href="#method.into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html#tymethod.into" class="fn">into</a>(self) -&gt; U</h4></section></summary><div class="docblock"><p>Calls <code>U::from(self)</code>.</p>
<p>That is, this conversion is whatever the implementation of
<code><a href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a>&lt;T&gt; for U</code> chooses to do.</p>
</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-IntoFuture-for-F" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/future/into_future.rs.html#138">source</a><a href="#impl-IntoFuture-for-F" class="anchor">§</a><h3 class="code-header">impl&lt;F&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/into_future/trait.IntoFuture.html" title="trait core::future::into_future::IntoFuture">IntoFuture</a> for F<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Output-1" class="associatedtype trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/future/into_future.rs.html#139">source</a><a href="#associatedtype.Output-1" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/future/into_future/trait.IntoFuture.html#associatedtype.Output" class="associatedtype">Output</a> = &lt;F as <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a></h4></section></summary><div class='docblock'>The output that the future will produce on completion.</div></details><details class="toggle" open><summary><section id="associatedtype.IntoFuture" class="associatedtype trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/future/into_future.rs.html#140">source</a><a href="#associatedtype.IntoFuture" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/future/into_future/trait.IntoFuture.html#associatedtype.IntoFuture" class="associatedtype">IntoFuture</a> = F</h4></section></summary><div class='docblock'>Which kind of future are we turning this into?</div></details><details class="toggle method-toggle" open><summary><section id="method.into_future" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/future/into_future.rs.html#142">source</a><a href="#method.into_future" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/future/into_future/trait.IntoFuture.html#tymethod.into_future" class="fn">into_future</a>(self) -&gt; &lt;F as <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/into_future/trait.IntoFuture.html" title="trait core::future::into_future::IntoFuture">IntoFuture</a>&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/into_future/trait.IntoFuture.html#associatedtype.IntoFuture" title="type core::future::into_future::IntoFuture::IntoFuture">IntoFuture</a></h4></section></summary><div class='docblock'>Creates a future from a value. <a href="https://doc.rust-lang.org/nightly/core/future/into_future/trait.IntoFuture.html#tymethod.into_future">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#805-807">source</a><a href="#impl-TryFrom%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;U&gt; for T<div class="where">where
U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;T&gt;,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error-1" class="associatedtype trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#809">source</a><a href="#associatedtype.Error-1" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/nightly/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_from" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#812">source</a><a href="#method.try_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#tymethod.try_from" class="fn">try_from</a>(value: U) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;T, &lt;T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;U&gt;&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>&gt;</h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryFuture-for-F" class="impl"><a href="#impl-TryFuture-for-F" class="anchor">§</a><h3 class="code-header">impl&lt;F, T, E&gt; TryFuture for F<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>&lt;Output = <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;T, E&gt;&gt; + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Ok" class="associatedtype trait-impl"><a href="#associatedtype.Ok" class="anchor">§</a><h4 class="code-header">type <a class="associatedtype">Ok</a> = T</h4></section></summary><div class='docblock'>The type of successful values yielded by this future</div></details><details class="toggle" open><summary><section id="associatedtype.Error-2" class="associatedtype trait-impl"><a href="#associatedtype.Error-2" class="anchor">§</a><h4 class="code-header">type <a class="associatedtype">Error</a> = E</h4></section></summary><div class='docblock'>The type of failures yielded by this future</div></details><details class="toggle method-toggle" open><summary><section id="method.try_poll" class="method trait-impl"><a href="#method.try_poll" class="anchor">§</a><h4 class="code-header">fn <a class="fn">try_poll</a>(
self: <a class="struct" href="https://doc.rust-lang.org/nightly/core/pin/struct.Pin.html" title="struct core::pin::Pin">Pin</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&amp;mut F</a>&gt;,
cx: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Context.html" title="struct core::task::wake::Context">Context</a>&lt;'_&gt;,
) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/task/poll/enum.Poll.html" title="enum core::task::poll::Poll">Poll</a>&lt;&lt;F as <a class="trait" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future">Future</a>&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="type core::future::future::Future::Output">Output</a>&gt;</h4></section></summary><div class='docblock'>Poll this <code>TryFuture</code> as if it were a <code>Future</code>. <a>Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryFutureExt-for-Fut" class="impl"><a href="#impl-TryFutureExt-for-Fut" class="anchor">§</a><h3 class="code-header">impl&lt;Fut&gt; TryFutureExt for Fut<div class="where">where
Fut: TryFuture + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.map_ok" class="method trait-impl"><a href="#method.map_ok" class="anchor">§</a><h4 class="code-header">fn <a class="fn">map_ok</a>&lt;T, F&gt;(self, f: F) -&gt; MapOk&lt;Self, F&gt;<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(Self::Ok) -&gt; T,
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Maps this futures success value to a different value. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.map_ok_or_else" class="method trait-impl"><a href="#method.map_ok_or_else" class="anchor">§</a><h4 class="code-header">fn <a class="fn">map_ok_or_else</a>&lt;T, E, F&gt;(self, e: E, f: F) -&gt; MapOkOrElse&lt;Self, F, E&gt;<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(Self::Ok) -&gt; T,
E: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(Self::Error) -&gt; T,
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Maps this futures success value to a different value, and permits for error handling resulting in the same type. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.map_err" class="method trait-impl"><a href="#method.map_err" class="anchor">§</a><h4 class="code-header">fn <a class="fn">map_err</a>&lt;E, F&gt;(self, f: F) -&gt; MapErr&lt;Self, F&gt;<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(Self::Error) -&gt; E,
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Maps this futures error value to a different value. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.err_into" class="method trait-impl"><a href="#method.err_into" class="anchor">§</a><h4 class="code-header">fn <a class="fn">err_into</a>&lt;E&gt;(self) -&gt; ErrInto&lt;Self, E&gt;<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,
Self::Error: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;E&gt;,</div></h4></section></summary><div class='docblock'>Maps this futures <a href="TryFuture::Error"><code>Error</code></a> to a new error type
using the <a href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into"><code>Into</code></a> trait. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.ok_into" class="method trait-impl"><a href="#method.ok_into" class="anchor">§</a><h4 class="code-header">fn <a class="fn">ok_into</a>&lt;U&gt;(self) -&gt; OkInto&lt;Self, U&gt;<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,
Self::Ok: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;U&gt;,</div></h4></section></summary><div class='docblock'>Maps this futures <a href="TryFuture::Ok"><code>Ok</code></a> to a new type
using the <a href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into"><code>Into</code></a> trait.</div></details><details class="toggle method-toggle" open><summary><section id="method.and_then" class="method trait-impl"><a href="#method.and_then" class="anchor">§</a><h4 class="code-header">fn <a class="fn">and_then</a>&lt;Fut, F&gt;(self, f: F) -&gt; AndThen&lt;Self, Fut, F&gt;<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(Self::Ok) -&gt; Fut,
Fut: TryFuture&lt;Error = Self::Error&gt;,
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Executes another future after this one resolves successfully. The
success value is passed to a closure to create this subsequent future. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.or_else" class="method trait-impl"><a href="#method.or_else" class="anchor">§</a><h4 class="code-header">fn <a class="fn">or_else</a>&lt;Fut, F&gt;(self, f: F) -&gt; OrElse&lt;Self, Fut, F&gt;<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(Self::Error) -&gt; Fut,
Fut: TryFuture&lt;Ok = Self::Ok&gt;,
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Executes another future if this one resolves to an error. The
error value is passed to a closure to create this subsequent future. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.inspect_ok" class="method trait-impl"><a href="#method.inspect_ok" class="anchor">§</a><h4 class="code-header">fn <a class="fn">inspect_ok</a>&lt;F&gt;(self, f: F) -&gt; InspectOk&lt;Self, F&gt;<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&amp;Self::Ok),
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Do something with the success value of a future before passing it on. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.inspect_err" class="method trait-impl"><a href="#method.inspect_err" class="anchor">§</a><h4 class="code-header">fn <a class="fn">inspect_err</a>&lt;F&gt;(self, f: F) -&gt; InspectErr&lt;Self, F&gt;<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(&amp;Self::Error),
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Do something with the error value of a future before passing it on. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.try_flatten" class="method trait-impl"><a href="#method.try_flatten" class="anchor">§</a><h4 class="code-header">fn <a class="fn">try_flatten</a>(self) -&gt; TryFlatten&lt;Self, Self::Ok&gt;<div class="where">where
Self::Ok: TryFuture&lt;Error = Self::Error&gt;,
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Flatten the execution of this future when the successful result of this
future is another future. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.try_flatten_stream" class="method trait-impl"><a href="#method.try_flatten_stream" class="anchor">§</a><h4 class="code-header">fn <a class="fn">try_flatten_stream</a>(self) -&gt; TryFlattenStream&lt;Self&gt;<div class="where">where
Self::Ok: TryStream&lt;Error = Self::Error&gt;,
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Flatten the execution of this future when the successful result of this
future is a stream. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.unwrap_or_else" class="method trait-impl"><a href="#method.unwrap_or_else" class="anchor">§</a><h4 class="code-header">fn <a class="fn">unwrap_or_else</a>&lt;F&gt;(self, f: F) -&gt; UnwrapOrElse&lt;Self, F&gt;<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,
F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>(Self::Error) -&gt; Self::Ok,</div></h4></section></summary><div class='docblock'>Unwraps this futures output, producing a future with this futures
<a href="TryFuture::Ok"><code>Ok</code></a> type as its
<a href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html#associatedtype.Output" title="associated type core::future::future::Future::Output"><code>Output</code></a> type. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.into_future-1" class="method trait-impl"><a href="#method.into_future-1" class="anchor">§</a><h4 class="code-header">fn <a class="fn">into_future</a>(self) -&gt; IntoFuture&lt;Self&gt;<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h4></section></summary><div class='docblock'>Wraps a [<code>TryFuture</code>] into a type that implements
<a href="https://doc.rust-lang.org/nightly/core/future/future/trait.Future.html" title="trait core::future::future::Future"><code>Future</code></a>. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.try_poll_unpin" class="method trait-impl"><a href="#method.try_poll_unpin" class="anchor">§</a><h4 class="code-header">fn <a class="fn">try_poll_unpin</a>(
&amp;mut self,
cx: &amp;mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/task/wake/struct.Context.html" title="struct core::task::wake::Context">Context</a>&lt;'_&gt;,
) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/task/poll/enum.Poll.html" title="enum core::task::poll::Poll">Poll</a>&lt;<a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;Self::Ok, Self::Error&gt;&gt;<div class="where">where
Self: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a>,</div></h4></section></summary><div class='docblock'>A convenience method for calling [<code>TryFuture::try_poll</code>] on <a href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html" title="trait core::marker::Unpin"><code>Unpin</code></a>
future types.</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#790-792">source</a><a href="#impl-TryInto%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T, U&gt; <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a>&lt;U&gt; for T<div class="where">where
U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error" class="associatedtype trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#794">source</a><a href="#associatedtype.Error" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = &lt;U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#797">source</a><a href="#method.try_into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#tymethod.try_into" class="fn">try_into</a>(self) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;U, &lt;U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;T&gt;&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>&gt;</h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-WithSubscriber-for-T" class="impl"><a href="#impl-WithSubscriber-for-T" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; WithSubscriber for T</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.with_subscriber" class="method trait-impl"><a href="#method.with_subscriber" class="anchor">§</a><h4 class="code-header">fn <a class="fn">with_subscriber</a>&lt;S&gt;(self, subscriber: S) -&gt; WithDispatch&lt;Self&gt;<div class="where">where
S: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;Dispatch&gt;,</div></h4></section></summary><div class='docblock'>Attaches the provided <a href="super::Subscriber"><code>Subscriber</code></a> to this type, returning a
[<code>WithDispatch</code>] wrapper. <a>Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.with_current_subscriber" class="method trait-impl"><a href="#method.with_current_subscriber" class="anchor">§</a><h4 class="code-header">fn <a class="fn">with_current_subscriber</a>(self) -&gt; WithDispatch&lt;Self&gt;</h4></section></summary><div class='docblock'>Attaches the current <a href="crate::dispatcher#setting-the-default-subscriber">default</a> <a href="super::Subscriber"><code>Subscriber</code></a> to this type, returning a
[<code>WithDispatch</code>] wrapper. <a>Read more</a></div></details></div></details></div></section></div></main></body></html>