| <!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="Sends the body stream and trailers to the remote peer."><meta name="keywords" content="rust, rustlang, rust-lang, SendStream"><title>SendStream in h2 - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" 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class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><h2></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../h2/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><h2 class="location"><a href="#">SendStream</a></h2><div class="sidebar-elems"><section><h3><a href="#implementations">Methods</a></h3><ul class="block"><li><a href="#method.capacity">capacity</a></li><li><a href="#method.poll_capacity">poll_capacity</a></li><li><a href="#method.poll_reset">poll_reset</a></li><li><a href="#method.reserve_capacity">reserve_capacity</a></li><li><a href="#method.send_data">send_data</a></li><li><a href="#method.send_reset">send_reset</a></li><li><a href="#method.send_trailers">send_trailers</a></li><li><a href="#method.stream_id">stream_id</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block"><li><a href="#impl-Debug-for-SendStream%3CB%3E">Debug</a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block"><li><a href="#impl-RefUnwindSafe-for-SendStream%3CB%3E">RefUnwindSafe</a></li><li><a href="#impl-Send-for-SendStream%3CB%3E">Send</a></li><li><a href="#impl-Sync-for-SendStream%3CB%3E">Sync</a></li><li><a href="#impl-Unpin-for-SendStream%3CB%3E">Unpin</a></li><li><a href="#impl-UnwindSafe-for-SendStream%3CB%3E">UnwindSafe</a></li></ul><h3><a href="#blanket-implementations">Blanket Implementations</a></h3><ul class="block"><li><a href="#impl-Any-for-SendStream%3CB%3E">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-SendStream%3CB%3E">Borrow<T></a></li><li><a href="#impl-BorrowMut%3CT%3E-for-SendStream%3CB%3E">BorrowMut<T></a></li><li><a href="#impl-From%3CT%3E-for-SendStream%3CB%3E">From<T></a></li><li><a href="#impl-Instrument-for-SendStream%3CB%3E">Instrument</a></li><li><a href="#impl-Into%3CU%3E-for-SendStream%3CB%3E">Into<U></a></li><li><a href="#impl-TryFrom%3CU%3E-for-SendStream%3CB%3E">TryFrom<U></a></li><li><a href="#impl-TryInto%3CU%3E-for-SendStream%3CB%3E">TryInto<U></a></li><li><a href="#impl-WithSubscriber-for-SendStream%3CB%3E">WithSubscriber</a></li></ul></section><h2><a href="index.html">In h2</a></h2></div></nav><main><div class="width-limiter"><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn">Struct <a href="index.html">h2</a>::<wbr><a class="struct" href="#">SendStream</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../clipboard.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="srclink" href="../src/h2/share.rs.html#97-99">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span></div><div class="item-decl"><pre class="rust struct"><code>pub struct SendStream<B> { /* private fields */ }</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Sends the body stream and trailers to the remote peer.</p> |
| <h2 id="overview"><a href="#overview">Overview</a></h2> |
| <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 |
| HTTP/2 message header has been sent sent. It is used to stream the message |
| body and send the message trailers. See method level documentation for more |
| details.</p> |
| <p>The <code>SendStream</code> instance is also used to manage outbound flow control.</p> |
| <p>If a <code>SendStream</code> is dropped without explicitly closing the send stream, a |
| <code>RST_STREAM</code> frame will be sent. This essentially cancels the request / |
| response exchange.</p> |
| <p>The ways to explicitly close the send stream are:</p> |
| <ul> |
| <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>, |
| <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> |
| <li>Send trailers with <a href="#method.send_trailers"><code>send_trailers</code></a>.</li> |
| <li>Explicitly reset the stream with <a href="#method.send_reset"><code>send_reset</code></a>.</li> |
| </ul> |
| <h2 id="flow-control"><a href="#flow-control">Flow control</a></h2> |
| <p>In HTTP/2, data cannot be sent to the remote peer unless there is |
| available window capacity on both the stream and the connection. When a data |
| frame is sent, both the stream window and the connection window are |
| decremented. When the stream level window reaches zero, no further data can |
| be sent on that stream. When the connection level window reaches zero, no |
| further data can be sent on any stream for that connection.</p> |
| <p>When the remote peer is ready to receive more data, it sends <code>WINDOW_UPDATE</code> |
| frames. These frames increment the windows. See the <a href="http://httpwg.org/specs/rfc7540.html#FlowControl">specification</a> for more |
| details on the principles of HTTP/2 flow control.</p> |
| <p>The implications for sending data are that the caller <strong>should</strong> ensure that |
| both the stream and the connection has available window capacity before |
| loading the data to send into memory. The <code>SendStream</code> instance provides the |
| necessary APIs to perform this logic. This, however, is not an obligation. |
| If the caller attempts to send data on a stream when there is no available |
| window capacity, the library will buffer the data until capacity becomes |
| available, at which point the buffer will be flushed to the connection.</p> |
| <p><strong>NOTE</strong>: There is no bound on the amount of data that the library will |
| buffer. If you are sending large amounts of data, you really should hook |
| into the flow control lifecycle. Otherwise, you risk using up significant |
| amounts of memory.</p> |
| <p>To hook into the flow control lifecycle, the caller signals to the library |
| that it intends to send data by calling <a href="#method.reserve_capacity"><code>reserve_capacity</code></a>, specifying the |
| amount of data, in octets, that the caller intends to send. After this, |
| <code>poll_capacity</code> is used to be notified when the requested capacity is |
| assigned to the stream. Once <a href="#method.poll_capacity"><code>poll_capacity</code></a> returns <code>Ready</code> with the number |
| of octets available to the stream, the caller is able to actually send the |
| data using <a href="#method.send_data"><code>send_data</code></a>.</p> |
| <p>Because there is also a connection level window that applies to <strong>all</strong> |
| streams on a connection, when capacity is assigned to a stream (indicated by |
| <code>poll_capacity</code> returning <code>Ready</code>), this capacity is reserved on the |
| connection and will <strong>not</strong> be assigned to any other stream. If data is |
| never written to the stream, that capacity is effectively lost to other |
| streams and this introduces the risk of deadlocking a connection.</p> |
| <p>To avoid throttling data on a connection, the caller should not reserve |
| capacity until ready to send data and once any capacity is assigned to the |
| stream, the caller should immediately send data consuming this capacity. |
| There is no guarantee as to when the full capacity requested will become |
| available. For example, if the caller requests 64 KB of data and 512 bytes |
| become available, the caller should immediately send 512 bytes of data.</p> |
| <p>See <a href="#method.reserve_capacity"><code>reserve_capacity</code></a> documentation for more details.</p> |
| </div></details><h2 id="implementations" class="small-section-header">Implementations<a href="#implementations" class="anchor"></a></h2><div id="implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-SendStream%3CB%3E" class="impl has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#222-383">source</a><a href="#impl-SendStream%3CB%3E" class="anchor"></a><h3 class="code-header">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="struct.SendStream.html" title="struct h2::SendStream">SendStream</a><B></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.reserve_capacity" class="method has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#285-288">source</a><h4 class="code-header">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>)</h4></section></summary><div class="docblock"><p>Requests capacity to send data.</p> |
| <p>This function is used to express intent to send data. This requests |
| connection level capacity. Once the capacity is available, it is |
| assigned to the stream and not reused by other streams.</p> |
| <p>This function may be called repeatedly. The <code>capacity</code> argument is the |
| <strong>total</strong> amount of requested capacity. Sequential calls to |
| <code>reserve_capacity</code> are <em>not</em> additive. Given the following:</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code>send_stream.reserve_capacity(<span class="number">100</span>); |
| send_stream.reserve_capacity(<span class="number">200</span>);</code></pre></div> |
| <p>After the second call to <code>reserve_capacity</code>, the <em>total</em> requested |
| capacity will be 200.</p> |
| <p><code>reserve_capacity</code> is also used to cancel previous capacity requests. |
| Given the following:</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code>send_stream.reserve_capacity(<span class="number">100</span>); |
| send_stream.reserve_capacity(<span class="number">0</span>);</code></pre></div> |
| <p>After the second call to <code>reserve_capacity</code>, the <em>total</em> requested |
| capacity will be 0, i.e. there is no requested capacity for the stream.</p> |
| <p>If <code>reserve_capacity</code> is called with a lower value than the amount of |
| capacity <strong>currently</strong> assigned to the stream, this capacity will be |
| returned to the connection to be re-assigned to other streams.</p> |
| <p>Also, the amount of capacity that is reserved gets decremented as data |
| is sent. For example:</p> |
| |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code>send_stream.reserve_capacity(<span class="number">100</span>); |
| |
| send_stream.send_data(<span class="string">b"hello"</span>, <span class="bool-val">false</span>).unwrap(); |
| <span class="comment">// At this point, the total amount of requested capacity is 95 bytes. |
| |
| // Calling `reserve_capacity` with `100` again essentially requests an |
| // additional 5 bytes. |
| </span>send_stream.reserve_capacity(<span class="number">100</span>);</code></pre></div> |
| <p>See <a href="struct.SendStream.html#flow-control">Flow control</a> for an overview |
| of how send flow control works.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.capacity" class="method has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#294-296">source</a><h4 class="code-header">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></h4></section></summary><div class="docblock"><p>Returns the stream’s current send capacity.</p> |
| <p>This allows the caller to check the current amount of available capacity |
| before sending data.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.poll_capacity" class="method has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#312-317">source</a><h4 class="code-header">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="struct.Error.html" title="struct h2::Error">Error</a>>>></h4></section></summary><div class="docblock"><p>Requests to be notified when the stream’s capacity increases.</p> |
| <p>Before calling this, capacity should be requested with |
| <code>reserve_capacity</code>. Once capacity is requested, the connection will |
| assign capacity to the stream <strong>as it becomes available</strong>. There is no |
| guarantee as to when and in what increments capacity gets assigned to |
| the stream.</p> |
| <p>To get notified when the available capacity increases, the caller calls |
| <code>poll_capacity</code>, which returns <code>Ready(Some(n))</code> when <code>n</code> has been |
| increased by the connection. Note that <code>n</code> here represents the <strong>total</strong> |
| amount of assigned capacity at that point in time. It is also possible |
| that <code>n</code> is lower than the previous call if, since then, the caller has |
| sent data.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.send_data" class="method has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#334-338">source</a><h4 class="code-header">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="struct.Error.html" title="struct h2::Error">Error</a>></h4></section></summary><div class="docblock"><p>Sends a single data frame to the remote peer.</p> |
| <p>This function may be called repeatedly as long as <code>end_of_stream</code> is set |
| to <code>false</code>. Setting <code>end_of_stream</code> to <code>true</code> sets the end stream flag |
| on the data frame. Any further calls to <code>send_data</code> or <code>send_trailers</code> |
| will return an <a href="struct.Error.html"><code>Error</code></a>.</p> |
| <p><code>send_data</code> can be called without reserving capacity. In this case, the |
| data is buffered and the capacity is implicitly requested. Once the |
| capacity becomes available, the data is flushed to the connection. |
| However, this buffering is unbounded. As such, sending large amounts of |
| data without reserving capacity before hand could result in large |
| amounts of data being buffered in memory.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.send_trailers" class="method has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#344-346">source</a><h4 class="code-header">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="struct.Error.html" title="struct h2::Error">Error</a>></h4></section></summary><div class="docblock"><p>Sends trailers to the remote peer.</p> |
| <p>Sending trailers implicitly closes the send stream. Once the send stream |
| is closed, no more data can be sent.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.send_reset" class="method has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#355-357">source</a><h4 class="code-header">pub fn <a href="#method.send_reset" class="fnname">send_reset</a>(&mut self, reason: <a class="struct" href="struct.Reason.html" title="struct h2::Reason">Reason</a>)</h4></section></summary><div class="docblock"><p>Resets the stream.</p> |
| <p>This cancels the request / response exchange. If the response has not |
| yet been received, the associated <code>ResponseFuture</code> will return an |
| <a href="struct.Error.html"><code>Error</code></a> to reflect the canceled exchange.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.poll_reset" class="method has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#371-373">source</a><h4 class="code-header">pub fn <a href="#method.poll_reset" class="fnname">poll_reset</a>(&mut self, 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><'_>) -> <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="struct.Reason.html" title="struct h2::Reason">Reason</a>, <a class="struct" href="struct.Error.html" title="struct h2::Error">Error</a>>></h4></section></summary><div class="docblock"><p>Polls to be notified when the client resets this stream.</p> |
| <p>If stream is still open, this returns <code>Poll::Pending</code>, and |
| registers the task to be notified if a <code>RST_STREAM</code> is received.</p> |
| <p>If a <code>RST_STREAM</code> frame is received for this stream, calling this |
| method will yield the <code>Reason</code> for the reset.</p> |
| <h5 id="error"><a href="#error">Error</a></h5> |
| <p>If connection sees an error, this returns that error instead of a |
| <code>Reason</code>.</p> |
| </div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.stream_id" class="method has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#380-382">source</a><h4 class="code-header">pub fn <a href="#method.stream_id" class="fnname">stream_id</a>(&self) -> <a class="struct" href="struct.StreamId.html" title="struct h2::StreamId">StreamId</a></h4></section></summary><div class="docblock"><p>Returns the stream ID of this <code>SendStream</code>.</p> |
| <h5 id="panics"><a href="#panics">Panics</a></h5> |
| <p>If the lock on the stream store has been poisoned.</p> |
| </div></details></div></details></div><h2 id="trait-implementations" class="small-section-header">Trait Implementations<a href="#trait-implementations" class="anchor"></a></h2><div id="trait-implementations-list"><details class="rustdoc-toggle implementors-toggle" open><summary><section id="impl-Debug-for-SendStream%3CB%3E" class="impl has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#96">source</a><a href="#impl-Debug-for-SendStream%3CB%3E" class="anchor"></a><h3 class="code-header">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="https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="struct.SendStream.html" title="struct h2::SendStream">SendStream</a><B></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.fmt" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/h2/share.rs.html#96">source</a><a href="#method.fmt" class="anchor"></a><h4 class="code-header">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></h4></section></summary><div class='docblock'>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></div></details></div></details></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"><section id="impl-RefUnwindSafe-for-SendStream%3CB%3E" class="impl has-srclink"><a href="#impl-RefUnwindSafe-for-SendStream%3CB%3E" class="anchor"></a><h3 class="code-header">impl<B> <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.SendStream.html" title="struct h2::SendStream">SendStream</a><B></h3></section><section id="impl-Send-for-SendStream%3CB%3E" class="impl has-srclink"><a href="#impl-Send-for-SendStream%3CB%3E" class="anchor"></a><h3 class="code-header">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="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></h3></section><section id="impl-Sync-for-SendStream%3CB%3E" class="impl has-srclink"><a href="#impl-Sync-for-SendStream%3CB%3E" class="anchor"></a><h3 class="code-header">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="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></h3></section><section id="impl-Unpin-for-SendStream%3CB%3E" class="impl has-srclink"><a href="#impl-Unpin-for-SendStream%3CB%3E" class="anchor"></a><h3 class="code-header">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="struct.SendStream.html" title="struct h2::SendStream">SendStream</a><B></h3></section><section id="impl-UnwindSafe-for-SendStream%3CB%3E" class="impl has-srclink"><a href="#impl-UnwindSafe-for-SendStream%3CB%3E" class="anchor"></a><h3 class="code-header">impl<B> <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.SendStream.html" title="struct h2::SendStream">SendStream</a><B></h3></section></div><h2 id="blanket-implementations" class="small-section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor"></a></h2><div id="blanket-implementations-list"><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Any-for-SendStream%3CB%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#200">source</a><a href="#impl-Any-for-SendStream%3CB%3E" class="anchor"></a><h3 class="code-header">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></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.type_id" class="method trait-impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#201">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="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></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="rustdoc-toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E-for-SendStream%3CB%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#211">source</a><a href="#impl-Borrow%3CT%3E-for-SendStream%3CB%3E" class="anchor"></a><h3 class="code-header">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></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.borrow" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/91522" title="Tracking issue for const_borrow">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#213">source</a></span><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="fnname">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T</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="rustdoc-toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E-for-SendStream%3CB%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#220">source</a><a href="#impl-BorrowMut%3CT%3E-for-SendStream%3CB%3E" class="anchor"></a><h3 class="code-header">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></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.borrow_mut" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/91522" title="Tracking issue for const_borrow">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#221">source</a></span><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="fnname">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T</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="rustdoc-toggle implementors-toggle"><summary><section id="impl-From%3CT%3E-for-SendStream%3CB%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#733">source</a><a href="#impl-From%3CT%3E-for-SendStream%3CB%3E" class="anchor"></a><h3 class="code-header">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</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.from" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#736">source</a></span><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="fnname">from</a>(t: T) -> T</h4></section></summary><div class="docblock"><p>Returns the argument unchanged.</p> |
| </div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Instrument-for-SendStream%3CB%3E" class="impl has-srclink"><a class="srclink rightside" href="../src/tracing/instrument.rs.html#276">source</a><a href="#impl-Instrument-for-SendStream%3CB%3E" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="../tracing/instrument/trait.Instrument.html" title="trait tracing::instrument::Instrument">Instrument</a> for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.instrument" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/tracing/instrument.rs.html#82">source</a><a href="#method.instrument" class="anchor"></a><h4 class="code-header">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></h4></section></summary><div class='docblock'>Instruments this type with the provided <a href="../tracing/span/struct.Span.html" title="Span"><code>Span</code></a>, returning an |
| <code>Instrumented</code> wrapper. <a href="../tracing/instrument/trait.Instrument.html#method.instrument">Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.in_current_span" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/tracing/instrument.rs.html#121">source</a><a href="#method.in_current_span" class="anchor"></a><h4 class="code-header">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></h4></section></summary><div class='docblock'>Instruments this type with the <a href="../tracing/span/struct.Span.html#method.current">current</a> <a href="../tracing/span/struct.Span.html"><code>Span</code></a>, returning an |
| <code>Instrumented</code> wrapper. <a href="../tracing/instrument/trait.Instrument.html#method.in_current_span">Read more</a></div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E-for-SendStream%3CB%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#717">source</a><a href="#impl-Into%3CU%3E-for-SendStream%3CB%3E" class="anchor"></a><h3 class="code-header">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></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.into" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#725">source</a></span><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="fnname">into</a>(self) -> 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="From">From</a><T> for U</code> chooses to do.</p> |
| </div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-SendStream%3CB%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#775">source</a><a href="#impl-TryFrom%3CU%3E-for-SendStream%3CB%3E" class="anchor"></a><h3 class="code-header">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></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Error-1" class="associatedtype trait-impl has-srclink"><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="rustdoc-toggle method-toggle" open><summary><section id="method.try_from" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#781">source</a></span><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="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="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'>Performs the conversion.</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E-for-SendStream%3CB%3E" class="impl has-srclink"><a class="srclink rightside" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#760">source</a><a href="#impl-TryInto%3CU%3E-for-SendStream%3CB%3E" class="anchor"></a><h3 class="code-header">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></h3></section></summary><div class="impl-items"><details class="rustdoc-toggle" open><summary><section id="associatedtype.Error" class="associatedtype trait-impl has-srclink"><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> = <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="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="rustdoc-toggle method-toggle" open><summary><section id="method.try_into" class="method trait-impl has-srclink"><span class="rightside"><span class="since" title="const unstable">const: <a href="https://github.com/rust-lang/rust/issues/88674" title="Tracking issue for const_convert">unstable</a></span> · <a class="srclink" href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#766">source</a></span><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="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="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'>Performs the conversion.</div></details></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-WithSubscriber-for-SendStream%3CB%3E" class="impl has-srclink"><a class="srclink rightside" href="../src/tracing/instrument.rs.html#334">source</a><a href="#impl-WithSubscriber-for-SendStream%3CB%3E" class="anchor"></a><h3 class="code-header">impl<T> <a class="trait" href="../tracing/instrument/trait.WithSubscriber.html" title="trait tracing::instrument::WithSubscriber">WithSubscriber</a> for T</h3></section></summary><div class="impl-items"><details class="rustdoc-toggle method-toggle" open><summary><section id="method.with_subscriber" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/tracing/instrument.rs.html#169-171">source</a><a href="#method.with_subscriber" class="anchor"></a><h4 class="code-header">fn <a href="../tracing/instrument/trait.WithSubscriber.html#method.with_subscriber" class="fnname">with_subscriber</a><S>(self, subscriber: S) -> <a class="struct" href="../tracing/instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch">WithDispatch</a><Self><span class="where fmt-newline">where<br> S: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><<a class="struct" href="../tracing_core/dispatcher/struct.Dispatch.html" title="struct tracing_core::dispatcher::Dispatch">Dispatch</a>>,</span></h4></section></summary><div class='docblock'>Attaches the provided <a href="../tracing_core/subscriber/trait.Subscriber.html"><code>Subscriber</code></a> to this type, returning a |
| <a href="../tracing/instrument/struct.WithDispatch.html" title="WithDispatch"><code>WithDispatch</code></a> wrapper. <a href="../tracing/instrument/trait.WithSubscriber.html#method.with_subscriber">Read more</a></div></details><details class="rustdoc-toggle method-toggle" open><summary><section id="method.with_current_subscriber" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/tracing/instrument.rs.html#221">source</a><a href="#method.with_current_subscriber" class="anchor"></a><h4 class="code-header">fn <a href="../tracing/instrument/trait.WithSubscriber.html#method.with_current_subscriber" class="fnname">with_current_subscriber</a>(self) -> <a class="struct" href="../tracing/instrument/struct.WithDispatch.html" title="struct tracing::instrument::WithDispatch">WithDispatch</a><Self></h4></section></summary><div class='docblock'>Attaches the current <a href="../tracing/dispatcher/index.html#setting-the-default-subscriber">default</a> <a href="../tracing_core/subscriber/trait.Subscriber.html"><code>Subscriber</code></a> to this type, returning a |
| <a href="../tracing/instrument/struct.WithDispatch.html" title="WithDispatch"><code>WithDispatch</code></a> wrapper. <a href="../tracing/instrument/trait.WithSubscriber.html#method.with_current_subscriber">Read more</a></div></details></div></details></div></section></div></main><div id="rustdoc-vars" data-root-path="../" data-current-crate="h2" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
