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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="Connection state common to both client and server connections."><title>CommonState in rustls - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../static.files/rustdoc-ac92e1bbe349e143.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="rustls" data-themes="" data-resource-suffix="" data-rustdoc-version="1.76.0 (07dca489a 2024-02-04)" data-channel="1.76.0" data-search-js="search-2b6ce74ff89ae146.js" data-settings-js="settings-4313503d2e1961c2.js" ><script src="../static.files/storage-f2adc0d6ca4d09fb.js"></script><script defer src="sidebar-items.js"></script><script defer src="../static.files/main-305769736d49e732.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-feafe1bb7466e4bd.css"></noscript><link rel="alternate icon" type="image/png" href="../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../static.files/favicon-2c020d218678b618.svg"></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">&#9776;</button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../rustls/index.html">rustls</a><span class="version">0.21.7</span></h2></div><h2 class="location"><a href="#">CommonState</a></h2><div class="sidebar-elems"><section><h3><a href="#implementations">Methods</a></h3><ul class="block method"><li><a href="#method.alpn_protocol">alpn_protocol</a></li><li><a href="#method.is_handshaking">is_handshaking</a></li><li><a href="#method.negotiated_cipher_suite">negotiated_cipher_suite</a></li><li><a href="#method.peer_certificates">peer_certificates</a></li><li><a href="#method.protocol_version">protocol_version</a></li><li><a href="#method.send_close_notify">send_close_notify</a></li><li><a href="#method.set_buffer_limit">set_buffer_limit</a></li><li><a href="#method.wants_read">wants_read</a></li><li><a href="#method.wants_write">wants_write</a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block synthetic-implementation"><li><a href="#impl-RefUnwindSafe-for-CommonState">!RefUnwindSafe</a></li><li><a href="#impl-UnwindSafe-for-CommonState">!UnwindSafe</a></li><li><a href="#impl-Send-for-CommonState">Send</a></li><li><a href="#impl-Sync-for-CommonState">Sync</a></li><li><a href="#impl-Unpin-for-CommonState">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">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-T">Borrow&lt;T&gt;</a></li><li><a href="#impl-BorrowMut%3CT%3E-for-T">BorrowMut&lt;T&gt;</a></li><li><a href="#impl-From%3CT%3E-for-T">From&lt;T&gt;</a></li><li><a href="#impl-Into%3CU%3E-for-T">Into&lt;U&gt;</a></li><li><a href="#impl-TryFrom%3CU%3E-for-T">TryFrom&lt;U&gt;</a></li><li><a href="#impl-TryInto%3CU%3E-for-T">TryInto&lt;U&gt;</a></li></ul></section><h2><a href="index.html">In crate rustls</a></h2></div></nav><div class="sidebar-resizer"></div>
<main><div class="width-limiter"><nav class="sub"><form class="search-form"><span></span><div id="sidebar-button" tabindex="-1"><a href="../rustls/all.html" title="show sidebar"></a></div><input class="search-input" name="search" aria-label="Run search in the documentation" autocomplete="off" spellcheck="false" placeholder="Click or press S to search, ? for more options…" type="search"><div id="help-button" tabindex="-1"><a href="../help.html" title="help">?</a></div><div id="settings-menu" tabindex="-1"><a href="../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1>Struct <a href="index.html">rustls</a>::<wbr><a class="struct" href="#">CommonState</a><button id="copy-path" title="Copy item path to clipboard"><img src="../static.files/clipboard-7571035ce49a181d.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="src" href="../src/rustls/common_state.rs.html#24-53">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>&#x2212;</span>]</button></span></div><pre class="rust item-decl"><code>pub struct CommonState { <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>Connection state common to both client and server connections.</p>
</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-CommonState" class="impl"><a class="src rightside" href="../src/rustls/common_state.rs.html#55-584">source</a><a href="#impl-CommonState" class="anchor">§</a><h3 class="code-header">impl <a class="struct" href="struct.CommonState.html" title="struct rustls::CommonState">CommonState</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.wants_write" class="method"><a class="src rightside" href="../src/rustls/common_state.rs.html#89-91">source</a><h4 class="code-header">pub fn <a href="#method.wants_write" class="fn">wants_write</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true if the caller should call <a href="enum.Connection.html#method.write_tls" title="method rustls::Connection::write_tls"><code>Connection::write_tls</code></a> as soon as possible.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_handshaking" class="method"><a class="src rightside" href="../src/rustls/common_state.rs.html#100-102">source</a><h4 class="code-header">pub fn <a href="#method.is_handshaking" class="fn">is_handshaking</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true if the connection is currently performing the TLS handshake.</p>
<p>During this time plaintext written to the connection is buffered in memory. After
<a href="enum.Connection.html#method.process_new_packets" title="method rustls::Connection::process_new_packets"><code>Connection::process_new_packets()</code></a> has been called, this might start to return <code>false</code>
while the final handshake packets still need to be extracted from the connections buffers.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.peer_certificates" class="method"><a class="src rightside" href="../src/rustls/common_state.rs.html#119-121">source</a><h4 class="code-header">pub fn <a href="#method.peer_certificates" class="fn">peer_certificates</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;&amp;[<a class="struct" href="struct.Certificate.html" title="struct rustls::Certificate">Certificate</a>]&gt;</h4></section></summary><div class="docblock"><p>Retrieves the certificate chain used by the peer to authenticate.</p>
<p>The order of the certificate chain is as it appears in the TLS
protocol: the first certificate relates to the peer, the
second certifies the first, the third certifies the second, and
so on.</p>
<p>This is made available for both full and resumed handshakes.</p>
<p>For clients, this is the certificate chain of the server.</p>
<p>For servers, this is the certificate chain of the client,
if client authentication was completed.</p>
<p>The return value is None until this value is available.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.alpn_protocol" class="method"><a class="src rightside" href="../src/rustls/common_state.rs.html#128-130">source</a><h4 class="code-header">pub fn <a href="#method.alpn_protocol" class="fn">alpn_protocol</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;&amp;[<a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.u8.html">u8</a>]&gt;</h4></section></summary><div class="docblock"><p>Retrieves the protocol agreed with the peer via ALPN.</p>
<p>A return value of <code>None</code> after handshake completion
means no protocol was agreed (because no protocols
were offered or accepted by the peer).</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.negotiated_cipher_suite" class="method"><a class="src rightside" href="../src/rustls/common_state.rs.html#135-137">source</a><h4 class="code-header">pub fn <a href="#method.negotiated_cipher_suite" class="fn">negotiated_cipher_suite</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="enum" href="enum.SupportedCipherSuite.html" title="enum rustls::SupportedCipherSuite">SupportedCipherSuite</a>&gt;</h4></section></summary><div class="docblock"><p>Retrieves the ciphersuite agreed with the peer.</p>
<p>This returns None until the ciphersuite is agreed.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.protocol_version" class="method"><a class="src rightside" href="../src/rustls/common_state.rs.html#142-144">source</a><h4 class="code-header">pub fn <a href="#method.protocol_version" class="fn">protocol_version</a>(&amp;self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="enum" href="enum.ProtocolVersion.html" title="enum rustls::ProtocolVersion">ProtocolVersion</a>&gt;</h4></section></summary><div class="docblock"><p>Retrieves the protocol version agreed with the peer.</p>
<p>This returns <code>None</code> until the version is agreed.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.set_buffer_limit" class="method"><a class="src rightside" href="../src/rustls/common_state.rs.html#359-362">source</a><h4 class="code-header">pub fn <a href="#method.set_buffer_limit" class="fn">set_buffer_limit</a>(&amp;mut self, limit: <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.usize.html">usize</a>&gt;)</h4></section></summary><div class="docblock"><p>Sets a limit on the internal buffers used to buffer
unsent plaintext (prior to completing the TLS handshake)
and unsent TLS records. This limit acts only on application
data written through <a href="enum.Connection.html#method.writer" title="method rustls::Connection::writer"><code>Connection::writer</code></a>.</p>
<p>By default the limit is 64KB. The limit can be set
at any time, even if the current buffer use is higher.</p>
<p><a href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html#variant.None" title="variant core::option::Option::None"><code>None</code></a> means no limit applies, and will mean that written
data is buffered without bound it is up to the application
to appropriately schedule its plaintext and TLS writes to bound
memory usage.</p>
<p>For illustration: <code>Some(1)</code> means a limit of one byte applies:
<a href="enum.Connection.html#method.writer" title="method rustls::Connection::writer"><code>Connection::writer</code></a> will accept only one byte, encrypt it and
add a TLS header. Once this is sent via <a href="enum.Connection.html#method.write_tls" title="method rustls::Connection::write_tls"><code>Connection::write_tls</code></a>,
another byte may be sent.</p>
<h5 id="internal-write-direction-buffering"><a href="#internal-write-direction-buffering">Internal write-direction buffering</a></h5>
<p>rustls has two buffers whose size are bounded by this setting:</p>
<h6 id="buffering-of-unsent-plaintext-data-prior-to-handshake-completion"><a href="#buffering-of-unsent-plaintext-data-prior-to-handshake-completion">Buffering of unsent plaintext data prior to handshake completion</a></h6>
<p>Calls to <a href="enum.Connection.html#method.writer" title="method rustls::Connection::writer"><code>Connection::writer</code></a> before or during the handshake
are buffered (up to the limit specified here). Once the
handshake completes this data is encrypted and the resulting
TLS records are added to the outgoing buffer.</p>
<h6 id="buffering-of-outgoing-tls-records"><a href="#buffering-of-outgoing-tls-records">Buffering of outgoing TLS records</a></h6>
<p>This buffer is used to store TLS records that rustls needs to
send to the peer. It is used in these two circumstances:</p>
<ul>
<li>by <a href="enum.Connection.html#method.process_new_packets" title="method rustls::Connection::process_new_packets"><code>Connection::process_new_packets</code></a> when a handshake or alert
TLS record needs to be sent.</li>
<li>by <a href="enum.Connection.html#method.writer" title="method rustls::Connection::writer"><code>Connection::writer</code></a> post-handshake: the plaintext is
encrypted and the resulting TLS record is buffered.</li>
</ul>
<p>This buffer is emptied by <a href="enum.Connection.html#method.write_tls" title="method rustls::Connection::write_tls"><code>Connection::write_tls</code></a>.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.send_close_notify" class="method"><a class="src rightside" href="../src/rustls/common_state.rs.html#497-500">source</a><h4 class="code-header">pub fn <a href="#method.send_close_notify" class="fn">send_close_notify</a>(&amp;mut self)</h4></section></summary><div class="docblock"><p>Queues a close_notify warning alert to be sent in the next
<a href="enum.Connection.html#method.write_tls" title="method rustls::Connection::write_tls"><code>Connection::write_tls</code></a> call. This informs the peer that the
connection is being closed.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.wants_read" class="method"><a class="src rightside" href="../src/rustls/common_state.rs.html#527-537">source</a><h4 class="code-header">pub fn <a href="#method.wants_read" class="fn">wants_read</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true if the caller should call <a href="enum.Connection.html#method.read_tls" title="method rustls::Connection::read_tls"><code>Connection::read_tls</code></a> as soon
as possible.</p>
<p>If there is pending plaintext data to read with <a href="enum.Connection.html#method.reader" title="method rustls::Connection::reader"><code>Connection::reader</code></a>,
this returns false. If your application respects this mechanism,
only one full TLS message will be buffered by rustls.</p>
</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-RefUnwindSafe-for-CommonState" class="impl"><a href="#impl-RefUnwindSafe-for-CommonState" class="anchor">§</a><h3 class="code-header">impl !<a class="trait" href="https://doc.rust-lang.org/1.76.0/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="struct.CommonState.html" title="struct rustls::CommonState">CommonState</a></h3></section><section id="impl-Send-for-CommonState" class="impl"><a href="#impl-Send-for-CommonState" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="struct.CommonState.html" title="struct rustls::CommonState">CommonState</a></h3></section><section id="impl-Sync-for-CommonState" class="impl"><a href="#impl-Sync-for-CommonState" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="struct.CommonState.html" title="struct rustls::CommonState">CommonState</a></h3></section><section id="impl-Unpin-for-CommonState" class="impl"><a href="#impl-Unpin-for-CommonState" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="struct.CommonState.html" title="struct rustls::CommonState">CommonState</a></h3></section><section id="impl-UnwindSafe-for-CommonState" class="impl"><a href="#impl-UnwindSafe-for-CommonState" class="anchor">§</a><h3 class="code-header">impl !<a class="trait" href="https://doc.rust-lang.org/1.76.0/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="struct" href="struct.CommonState.html" title="struct rustls::CommonState">CommonState</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/1.76.0/src/core/any.rs.html#140">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/1.76.0/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/1.76.0/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/1.76.0/src/core/any.rs.html#141">source</a><a href="#method.type_id" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/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/1.76.0/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/1.76.0/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/1.76.0/src/core/borrow.rs.html#208">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/1.76.0/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/1.76.0/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/1.76.0/src/core/borrow.rs.html#210">source</a><a href="#method.borrow" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/borrow/trait.Borrow.html#tymethod.borrow" class="fn">borrow</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/1.76.0/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/1.76.0/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/1.76.0/src/core/borrow.rs.html#216">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/1.76.0/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/1.76.0/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/1.76.0/src/core/borrow.rs.html#217">source</a><a href="#method.borrow_mut" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/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/1.76.0/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/1.76.0/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/1.76.0/src/core/convert/mod.rs.html#763">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/1.76.0/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/1.76.0/src/core/convert/mod.rs.html#766">source</a><a href="#method.from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/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-Into%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/convert/mod.rs.html#747-749">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/1.76.0/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/1.76.0/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/1.76.0/src/core/convert/mod.rs.html#756">source</a><a href="#method.into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/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/1.76.0/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-TryFrom%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/convert/mod.rs.html#803-805">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/1.76.0/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/1.76.0/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 href="#associatedtype.Error-1" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/1.76.0/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/1.76.0/src/core/convert/mod.rs.html#810">source</a><a href="#method.try_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/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/1.76.0/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/1.76.0/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/1.76.0/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-TryInto%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.76.0/src/core/convert/mod.rs.html#788-790">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/1.76.0/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/1.76.0/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 href="#associatedtype.Error" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = &lt;U as <a class="trait" href="https://doc.rust-lang.org/1.76.0/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/1.76.0/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/1.76.0/src/core/convert/mod.rs.html#795">source</a><a href="#method.try_into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryInto.html#tymethod.try_into" class="fn">try_into</a>(self) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/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/1.76.0/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/1.76.0/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></div></section></div></main></body></html>