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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="API documentation for the Rust `SendStream` struct in crate `h2`."><meta name="keywords" content="rust, rustlang, rust-lang, SendStream"><title>h2::SendStream - Rust</title><link rel="stylesheet" type="text/css" href="../normalize.css"><link rel="stylesheet" type="text/css" href="../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../ayu.css" disabled ><script id="default-settings"></script><script src="../storage.js"></script><noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="icon" type="image/svg+xml" href="../favicon.svg">
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<link rel="alternate icon" type="image/png" href="../favicon-32x32.png"><style type="text/css">#crate-search{background-image:url("../down-arrow.svg");}</style></head><body class="rustdoc struct"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../h2/index.html'><div class='logo-container rust-logo'><img src='../rust-logo.png' alt='logo'></div></a><p class="location">Struct SendStream</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#implementations">Methods</a><div class="sidebar-links"><a href="#method.capacity">capacity</a><a href="#method.poll_capacity">poll_capacity</a><a href="#method.poll_reset">poll_reset</a><a href="#method.reserve_capacity">reserve_capacity</a><a href="#method.send_data">send_data</a><a href="#method.send_reset">send_reset</a><a href="#method.send_trailers">send_trailers</a><a href="#method.stream_id">stream_id</a></div><a class="sidebar-title" href="#trait-implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Debug">Debug</a></div><a class="sidebar-title" href="#synthetic-implementations">Auto Trait Implementations</a><div class="sidebar-links"><a href="#impl-RefUnwindSafe">RefUnwindSafe</a><a href="#impl-Send">Send</a><a href="#impl-Sync">Sync</a><a href="#impl-Unpin">Unpin</a><a href="#impl-UnwindSafe">UnwindSafe</a></div><a class="sidebar-title" href="#blanket-implementations">Blanket Implementations</a><div class="sidebar-links"><a href="#impl-Any">Any</a><a href="#impl-Borrow%3CT%3E">Borrow<T></a><a href="#impl-BorrowMut%3CT%3E">BorrowMut<T></a><a href="#impl-From%3CT%3E">From<T></a><a href="#impl-Instrument">Instrument</a><a href="#impl-Into%3CU%3E">Into<U></a><a href="#impl-TryFrom%3CU%3E">TryFrom<U></a><a href="#impl-TryInto%3CU%3E">TryInto<U></a></div></div><p class="location"><a href="index.html">h2</a></p><div id="sidebar-vars" data-name="SendStream" data-ty="struct" data-relpath=""></div><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu"><img src="../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices" role="menu"></div></div><script src="../theme.js"></script><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" class="help-button">?</button>
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<a id="settings-menu" href="../settings.html"><img src="../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class="fqn"><span class="in-band">Struct <a href="index.html">h2</a>::<wbr><a class="struct" href="">SendStream</a></span><span class="out-of-band"><span id="render-detail"><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span><a class="srclink" href="../src/h2/share.rs.html#98-100" title="goto source code">[src]</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class="rust struct">pub struct SendStream<B: <a class="trait" href="../bytes/buf/buf_impl/trait.Buf.html" title="trait bytes::buf::buf_impl::Buf">Buf</a>> { /* fields omitted */ }</pre></div><div class="docblock"><p>Sends the body stream and trailers to the remote peer.</p>
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<h1 id="overview" class="section-header"><a href="#overview">Overview</a></h1>
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<p>A <code>SendStream</code> is provided by <a href="client/struct.SendRequest.html"><code>SendRequest</code></a> and <a href="server/struct.SendResponse.html"><code>SendResponse</code></a> once the
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HTTP/2.0 message header has been sent sent. It is used to stream the message
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body and send the message trailers. See method level documentation for more
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details.</p>
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<p>The <code>SendStream</code> instance is also used to manage outbound flow control.</p>
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<p>If a <code>SendStream</code> is dropped without explicitly closing the send stream, a
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<code>RST_STREAM</code> frame will be sent. This essentially cancels the request /
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response exchange.</p>
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<p>The ways to explicitly close the send stream are:</p>
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<ul>
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<li>Set <code>end_of_stream</code> to true when calling <a href="client/struct.SendRequest.html#method.send_request"><code>send_request</code></a>,
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<a href="server/struct.SendResponse.html#method.send_response"><code>send_response</code></a>, or <a href="#method.send_data"><code>send_data</code></a>.</li>
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<li>Send trailers with <a href="#method.send_trailers"><code>send_trailers</code></a>.</li>
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<li>Explicitly reset the stream with <a href="#method.send_reset"><code>send_reset</code></a>.</li>
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</ul>
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<h1 id="flow-control" class="section-header"><a href="#flow-control">Flow control</a></h1>
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<p>In HTTP/2.0, data cannot be sent to the remote peer unless there is
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available window capacity on both the stream and the connection. When a data
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frame is sent, both the stream window and the connection window are
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decremented. When the stream level window reaches zero, no further data can
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be sent on that stream. When the connection level window reaches zero, no
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further data can be sent on any stream for that connection.</p>
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<p>When the remote peer is ready to receive more data, it sends <code>WINDOW_UPDATE</code>
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frames. These frames increment the windows. See the <a href="http://httpwg.org/specs/rfc7540.html#FlowControl">specification</a> for more
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details on the principles of HTTP/2.0 flow control.</p>
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<p>The implications for sending data are that the caller <strong>should</strong> ensure that
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both the stream and the connection has available window capacity before
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loading the data to send into memory. The <code>SendStream</code> instance provides the
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necessary APIs to perform this logic. This, however, is not an obligation.
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If the caller attempts to send data on a stream when there is no available
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window capacity, the library will buffer the data until capacity becomes
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available, at which point the buffer will be flushed to the connection.</p>
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<p><strong>NOTE</strong>: There is no bound on the amount of data that the library will
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buffer. If you are sending large amounts of data, you really should hook
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into the flow control lifecycle. Otherwise, you risk using up significant
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amounts of memory.</p>
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<p>To hook into the flow control lifecycle, the caller signals to the library
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that it intends to send data by calling <a href="#method.reserve_capacity"><code>reserve_capacity</code></a>, specifying the
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amount of data, in octets, that the caller intends to send. After this,
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<code>poll_capacity</code> is used to be notified when the requested capacity is
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assigned to the stream. Once <a href="#method.poll_capacity"><code>poll_capacity</code></a> returns <code>Ready</code> with the number
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of octets available to the stream, the caller is able to actually send the
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data using <a href="#method.send_data"><code>send_data</code></a>.</p>
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<p>Because there is also a connection level window that applies to <strong>all</strong>
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streams on a connection, when capacity is assigned to a stream (indicated by
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<code>poll_capacity</code> returning <code>Ready</code>), this capacity is reserved on the
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connection and will <strong>not</strong> be assigned to any other stream. If data is
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never written to the stream, that capacity is effectively lost to other
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streams and this introduces the risk of deadlocking a connection.</p>
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<p>To avoid throttling data on a connection, the caller should not reserve
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capacity until ready to send data and once any capacity is assigned to the
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stream, the caller should immediately send data consuming this capacity.
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There is no guarantee as to when the full capacity requested will become
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available. For example, if the caller requests 64 KB of data and 512 bytes
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become available, the caller should immediately send 512 bytes of data.</p>
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<p>See <a href="#method.reserve_capacity"><code>reserve_capacity</code></a> documentation for more details.</p>
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</div><h2 id="implementations" class="small-section-header">Implementations<a href="#implementations" class="anchor"></a></h2><h3 id="impl" class="impl"><code class="in-band">impl<B: <a class="trait" href="../bytes/buf/buf_impl/trait.Buf.html" title="trait bytes::buf::buf_impl::Buf">Buf</a>> <a class="struct" href="../h2/struct.SendStream.html" title="struct h2::SendStream">SendStream</a><B></code><a href="#impl" class="anchor"></a><a class="srclink" href="../src/h2/share.rs.html#222-383" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.reserve_capacity" class="method"><code>pub fn <a href="#method.reserve_capacity" class="fnname">reserve_capacity</a>(&mut self, capacity: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>)</code><a class="srclink" href="../src/h2/share.rs.html#285-288" title="goto source code">[src]</a></h4><div class="docblock"><p>Requests capacity to send data.</p>
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<p>This function is used to express intent to send data. This requests
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connection level capacity. Once the capacity is available, it is
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assigned to the stream and not reused by other streams.</p>
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<p>This function may be called repeatedly. The <code>capacity</code> argument is the
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<strong>total</strong> amount of requested capacity. Sequential calls to
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<code>reserve_capacity</code> are <em>not</em> additive. Given the following:</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered">
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<span class="ident">send_stream</span>.<span class="ident">reserve_capacity</span>(<span class="number">100</span>);
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<span class="ident">send_stream</span>.<span class="ident">reserve_capacity</span>(<span class="number">200</span>);</pre></div>
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<p>After the second call to <code>reserve_capacity</code>, the <em>total</em> requested
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capacity will be 200.</p>
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<p><code>reserve_capacity</code> is also used to cancel previous capacity requests.
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Given the following:</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered">
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<span class="ident">send_stream</span>.<span class="ident">reserve_capacity</span>(<span class="number">100</span>);
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<span class="ident">send_stream</span>.<span class="ident">reserve_capacity</span>(<span class="number">0</span>);</pre></div>
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<p>After the second call to <code>reserve_capacity</code>, the <em>total</em> requested
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capacity will be 0, i.e. there is no requested capacity for the stream.</p>
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<p>If <code>reserve_capacity</code> is called with a lower value than the amount of
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capacity <strong>currently</strong> assigned to the stream, this capacity will be
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returned to the connection to be re-assigned to other streams.</p>
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<p>Also, the amount of capacity that is reserved gets decremented as data
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is sent. For example:</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered">
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<span class="ident">send_stream</span>.<span class="ident">reserve_capacity</span>(<span class="number">100</span>);
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<span class="ident">send_stream</span>.<span class="ident">send_data</span>(<span class="string">b"hello"</span>, <span class="bool-val">false</span>).<span class="ident">unwrap</span>();
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<span class="comment">// At this point, the total amount of requested capacity is 95 bytes.</span>
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<span class="comment">// Calling `reserve_capacity` with `100` again essentially requests an</span>
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<span class="comment">// additional 5 bytes.</span>
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<span class="ident">send_stream</span>.<span class="ident">reserve_capacity</span>(<span class="number">100</span>);</pre></div>
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<p>See <a href="struct.SendStream.html#flow-control">Flow control</a> for an overview
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of how send flow control works.</p>
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</div><h4 id="method.capacity" class="method"><code>pub fn <a href="#method.capacity" class="fnname">capacity</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></code><a class="srclink" href="../src/h2/share.rs.html#294-296" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns the stream's current send capacity.</p>
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<p>This allows the caller to check the current amount of available capacity
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before sending data.</p>
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</div><h4 id="method.poll_capacity" class="method"><code>pub fn <a href="#method.poll_capacity" class="fnname">poll_capacity</a>(<br> &mut self, <br> cx: &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><'_><br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/task/poll/enum.Poll.html" title="enum core::task::poll::Poll">Poll</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, <a class="struct" href="../h2/struct.Error.html" title="struct h2::Error">Error</a>>>></code><a class="srclink" href="../src/h2/share.rs.html#312-317" title="goto source code">[src]</a></h4><div class="docblock"><p>Requests to be notified when the stream's capacity increases.</p>
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<p>Before calling this, capacity should be requested with
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<code>reserve_capacity</code>. Once capacity is requested, the connection will
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assign capacity to the stream <strong>as it becomes available</strong>. There is no
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guarantee as to when and in what increments capacity gets assigned to
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the stream.</p>
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<p>To get notified when the available capacity increases, the caller calls
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<code>poll_capacity</code>, which returns <code>Ready(Some(n))</code> when <code>n</code> has been
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increased by the connection. Note that <code>n</code> here represents the <strong>total</strong>
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amount of assigned capacity at that point in time. It is also possible
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that <code>n</code> is lower than the previous call if, since then, the caller has
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sent data.</p>
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</div><h4 id="method.send_data" class="method"><code>pub fn <a href="#method.send_data" class="fnname">send_data</a>(&mut self, data: B, end_of_stream: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="../h2/struct.Error.html" title="struct h2::Error">Error</a>></code><a class="srclink" href="../src/h2/share.rs.html#334-338" title="goto source code">[src]</a></h4><div class="docblock"><p>Sends a single data frame to the remote peer.</p>
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<p>This function may be called repeatedly as long as <code>end_of_stream</code> is set
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to <code>false</code>. Setting <code>end_of_stream</code> to <code>true</code> sets the end stream flag
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on the data frame. Any further calls to <code>send_data</code> or <code>send_trailers</code>
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will return an <a href="struct.Error.html"><code>Error</code></a>.</p>
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<p><code>send_data</code> can be called without reserving capacity. In this case, the
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data is buffered and the capacity is implicitly requested. Once the
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capacity becomes available, the data is flushed to the connection.
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However, this buffering is unbounded. As such, sending large amounts of
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data without reserving capacity before hand could result in large
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amounts of data being buffered in memory.</p>
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</div><h4 id="method.send_trailers" class="method"><code>pub fn <a href="#method.send_trailers" class="fnname">send_trailers</a>(&mut self, trailers: <a class="struct" href="../http/header/map/struct.HeaderMap.html" title="struct http::header::map::HeaderMap">HeaderMap</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <a class="struct" href="../h2/struct.Error.html" title="struct h2::Error">Error</a>></code><a class="srclink" href="../src/h2/share.rs.html#344-346" title="goto source code">[src]</a></h4><div class="docblock"><p>Sends trailers to the remote peer.</p>
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<p>Sending trailers implicitly closes the send stream. Once the send stream
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is closed, no more data can be sent.</p>
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</div><h4 id="method.send_reset" class="method"><code>pub fn <a href="#method.send_reset" class="fnname">send_reset</a>(&mut self, reason: <a class="struct" href="../h2/struct.Reason.html" title="struct h2::Reason">Reason</a>)</code><a class="srclink" href="../src/h2/share.rs.html#355-357" title="goto source code">[src]</a></h4><div class="docblock"><p>Resets the stream.</p>
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<p>This cancels the request / response exchange. If the response has not
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yet been received, the associated <code>ResponseFuture</code> will return an
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<a href="struct.Error.html"><code>Error</code></a> to reflect the canceled exchange.</p>
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</div><h4 id="method.poll_reset" class="method"><code>pub fn <a href="#method.poll_reset" class="fnname">poll_reset</a>(<br> &mut self, <br> cx: &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><'_><br>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/task/poll/enum.Poll.html" title="enum core::task::poll::Poll">Poll</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="struct" href="../h2/struct.Reason.html" title="struct h2::Reason">Reason</a>, <a class="struct" href="../h2/struct.Error.html" title="struct h2::Error">Error</a>>></code><a class="srclink" href="../src/h2/share.rs.html#371-373" title="goto source code">[src]</a></h4><div class="docblock"><p>Polls to be notified when the client resets this stream.</p>
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<p>If stream is still open, this returns <code>Poll::Pending</code>, and
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registers the task to be notified if a <code>RST_STREAM</code> is received.</p>
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<p>If a <code>RST_STREAM</code> frame is received for this stream, calling this
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method will yield the <code>Reason</code> for the reset.</p>
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<h1 id="error" class="section-header"><a href="#error">Error</a></h1>
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<p>If connection sees an error, this returns that error instead of a
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<code>Reason</code>.</p>
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</div><h4 id="method.stream_id" class="method"><code>pub fn <a href="#method.stream_id" class="fnname">stream_id</a>(&self) -> <a class="struct" href="../h2/struct.StreamId.html" title="struct h2::StreamId">StreamId</a></code><a class="srclink" href="../src/h2/share.rs.html#380-382" title="goto source code">[src]</a></h4><div class="docblock"><p>Returns the stream ID of this <code>SendStream</code>.</p>
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<h1 id="panics" class="section-header"><a href="#panics">Panics</a></h1>
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<p>If the lock on the stream store has been poisoned.</p>
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</div></div><h2 id="trait-implementations" class="small-section-header">Trait Implementations<a href="#trait-implementations" class="anchor"></a></h2><div id="trait-implementations-list"><h3 id="impl-Debug" class="impl"><code class="in-band">impl<B: <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> + <a class="trait" href="../bytes/buf/buf_impl/trait.Buf.html" title="trait bytes::buf::buf_impl::Buf">Buf</a>> <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="../h2/struct.SendStream.html" title="struct h2::SendStream">SendStream</a><B></code><a href="#impl-Debug" class="anchor"></a><a class="srclink" href="../src/h2/share.rs.html#97" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.fmt" class="method hidden"><code>fn <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt" class="fnname">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/nightly/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/nightly/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></code><a class="srclink" href="../src/h2/share.rs.html#97" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></p>
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</div></div></div><h2 id="synthetic-implementations" class="small-section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor"></a></h2><div id="synthetic-implementations-list"><h3 id="impl-RefUnwindSafe" class="impl"><code class="in-band">impl<B> <a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.RefUnwindSafe.html" title="trait std::panic::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="../h2/struct.SendStream.html" title="struct h2::SendStream">SendStream</a><B></code><a href="#impl-RefUnwindSafe" class="anchor"></a><a class="srclink" href="../src/h2/lib.rs.html#1" title="goto source code">[src]</a></h3><div class="impl-items"></div><h3 id="impl-Send" class="impl"><code class="in-band">impl<B> <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="../h2/struct.SendStream.html" title="struct h2::SendStream">SendStream</a><B> <span class="where fmt-newline">where<br> B: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>, </span></code><a href="#impl-Send" class="anchor"></a><a class="srclink" href="../src/h2/lib.rs.html#1" title="goto source code">[src]</a></h3><div class="impl-items"></div><h3 id="impl-Sync" class="impl"><code class="in-band">impl<B> <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="../h2/struct.SendStream.html" title="struct h2::SendStream">SendStream</a><B> <span class="where fmt-newline">where<br> B: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a>, </span></code><a href="#impl-Sync" class="anchor"></a><a class="srclink" href="../src/h2/lib.rs.html#1" title="goto source code">[src]</a></h3><div class="impl-items"></div><h3 id="impl-Unpin" class="impl"><code class="in-band">impl<B> <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="../h2/struct.SendStream.html" title="struct h2::SendStream">SendStream</a><B></code><a href="#impl-Unpin" class="anchor"></a><a class="srclink" href="../src/h2/lib.rs.html#1" title="goto source code">[src]</a></h3><div class="impl-items"></div><h3 id="impl-UnwindSafe" class="impl"><code class="in-band">impl<B> <a class="trait" href="https://doc.rust-lang.org/nightly/std/panic/trait.UnwindSafe.html" title="trait std::panic::UnwindSafe">UnwindSafe</a> for <a class="struct" href="../h2/struct.SendStream.html" title="struct h2::SendStream">SendStream</a><B></code><a href="#impl-UnwindSafe" class="anchor"></a><a class="srclink" href="../src/h2/lib.rs.html#1" title="goto source code">[src]</a></h3><div class="impl-items"></div></div><h2 id="blanket-implementations" class="small-section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor"></a></h2><div id="blanket-implementations-list"><h3 id="impl-Any" class="impl"><code class="in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T <span class="where fmt-newline">where<br> T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code><a href="#impl-Any" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#131-135" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.type_id" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html#tymethod.type_id" class="fnname">type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/nightly/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#132" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>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></p>
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</div></div><h3 id="impl-Borrow%3CT%3E" class="impl"><code class="in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><T> for T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code><a href="#impl-Borrow%3CT%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#207-211" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.borrow" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow" class="fnname">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T</code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#208" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></p>
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</div></div><h3 id="impl-BorrowMut%3CT%3E" class="impl"><code class="in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T <span class="where fmt-newline">where<br> T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>, </span></code><a href="#impl-BorrowMut%3CT%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#214-218" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.borrow_mut" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fnname">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T</code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#215" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>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></p>
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</div></div><h3 id="impl-From%3CT%3E" class="impl"><code class="in-band">impl<T> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for T</code><a href="#impl-From%3CT%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#545-549" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.from" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from" class="fnname">from</a>(t: T) -> T</code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#546" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
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</div></div><h3 id="impl-Instrument" class="impl"><code class="in-band">impl<T> <a class="trait" href="../tracing/instrument/trait.Instrument.html" title="trait tracing::instrument::Instrument">Instrument</a> for T</code><a href="#impl-Instrument" class="anchor"></a><a class="srclink" href="../src/tracing/instrument.rs.html#155" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.instrument" class="method hidden"><code>pub fn <a href="../tracing/instrument/trait.Instrument.html#method.instrument" class="fnname">instrument</a>(self, span: <a class="struct" href="../tracing/span/struct.Span.html" title="struct tracing::span::Span">Span</a>) -> <a class="struct" href="../tracing/instrument/struct.Instrumented.html" title="struct tracing::instrument::Instrumented">Instrumented</a><Self></code><a class="srclink" href="../src/tracing/instrument.rs.html#38" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Instruments this type with the provided <code>Span</code>, returning an
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<code>Instrumented</code> wrapper. <a href="../tracing/instrument/trait.Instrument.html#method.instrument">Read more</a></p>
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</div><h4 id="method.in_current_span" class="method hidden"><code>pub fn <a href="../tracing/instrument/trait.Instrument.html#method.in_current_span" class="fnname">in_current_span</a>(self) -> <a class="struct" href="../tracing/instrument/struct.Instrumented.html" title="struct tracing::instrument::Instrumented">Instrumented</a><Self></code><a class="srclink" href="../src/tracing/instrument.rs.html#74" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Instruments this type with the <a href="../struct.Span.html#method.current">current</a> <code>Span</code>, returning an
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<code>Instrumented</code> wrapper. <a href="../tracing/instrument/trait.Instrument.html#method.in_current_span">Read more</a></p>
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</div></div><h3 id="impl-Into%3CU%3E" class="impl"><code class="in-band">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><T>, </span></code><a href="#impl-Into%3CU%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#534-541" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="method.into" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html#tymethod.into" class="fnname">into</a>(self) -> U</code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#538" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
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</div></div><h3 id="impl-TryFrom%3CU%3E" class="impl"><code class="in-band">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>, </span></code><a href="#impl-TryFrom%3CU%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#582-591" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="associatedtype.Error" class="type"><code>type <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" class="type">Error</a> = <a class="enum" href="https://doc.rust-lang.org/nightly/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
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</div><h4 id="method.try_from" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#tymethod.try_from" class="fnname">try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#588" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
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</div></div><h3 id="impl-TryInto%3CU%3E" class="impl"><code class="in-band">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a><U> for T <span class="where fmt-newline">where<br> U: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>, </span></code><a href="#impl-TryInto%3CU%3E" class="anchor"></a><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#568-577" title="goto source code">[src]</a></h3><div class="impl-items"><h4 id="associatedtype.Error-1" class="type"><code>type <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error" class="type">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></code></h4><div class='docblock'><p>The type returned in the event of a conversion error.</p>
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</div><h4 id="method.try_into" class="method hidden"><code>pub fn <a href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#tymethod.try_into" class="fnname">try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="type" href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></code><a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#574" title="goto source code">[src]</a></h4><div class='docblock hidden'><p>Performs the conversion.</p>
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