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<meta name="description" content="API documentation for the Rust `Warning` struct in crate `hyper`.">
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<meta name="keywords" content="rust, rustlang, rust-lang, Warning">
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<div class="sidebar-menu">☰</div>
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<p class='location'>Struct Warning</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#fields">Fields</a><div class="sidebar-links"><a href="#structfield.code">code</a><a href="#structfield.agent">agent</a><a href="#structfield.text">text</a><a href="#structfield.date">date</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-PartialEq">PartialEq</a><a href="#impl-Clone">Clone</a><a href="#impl-Debug">Debug</a><a href="#impl-Header">Header</a><a href="#impl-Display">Display</a><a href="#impl-FromStr">FromStr</a></div></div><p class='location'><a href='../index.html'>hyper</a>::<wbr><a href='index.html'>header</a></p><script>window.sidebarCurrent = {name: 'Warning', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
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<h1 class='fqn'><span class='in-band'>Struct <a href='../index.html'>hyper</a>::<wbr><a href='index.html'>header</a>::<wbr><a class="struct" href=''>Warning</a></span><span class='out-of-band'><span id='render-detail'>
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<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
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[<span class='inner'>−</span>]
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</a>
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</span><a class='srclink' href='../../src/hyper/header/common/warning.rs.html#80-89' title='goto source code'>[src]</a></span></h1>
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<pre class='rust struct'>pub struct Warning {
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pub code: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>,
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pub agent: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>,
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pub text: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/string/struct.String.html" title="struct alloc::string::String">String</a>,
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pub date: <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="../../hyper/header/struct.HttpDate.html" title="struct hyper::header::HttpDate">HttpDate</a>>,
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}</pre><div class='docblock'><p><code>Warning</code> header, defined in <a href="https://tools.ietf.org/html/rfc7234#section-5.5">RFC7234</a></p>
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<p>The <code>Warning</code> header field can be be used to carry additional information
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about the status or transformation of a message that might not be reflected
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in the status code. This header is sometimes used as backwards
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compatible way to notify of a deprecated API.</p>
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<h1 id="abnf" class="section-header"><a href="#abnf">ABNF</a></h1>
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<pre><code class="language-text">Warning = 1#warning-value
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warning-value = warn-code SP warn-agent SP warn-text
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[ SP warn-date ]
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warn-code = 3DIGIT
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warn-agent = ( uri-host [ ":" port ] ) / pseudonym
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; the name or pseudonym of the server adding
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; the Warning header field, for use in debugging
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; a single "-" is recommended when agent unknown
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warn-text = quoted-string
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warn-date = DQUOTE HTTP-date DQUOTE
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</code></pre>
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<h1 id="example-values" class="section-header"><a href="#example-values">Example values</a></h1>
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<ul>
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<li><code>Warning: 112 - "network down" "Sat, 25 Aug 2012 23:34:45 GMT"</code></li>
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<li><code>Warning: 299 - "Deprecated API " "Tue, 15 Nov 1994 08:12:31 GMT"</code></li>
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<li><code>Warning: 299 api.hyper.rs:8080 "Deprecated API : use newapi.hyper.rs instead."</code></li>
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<li><code>Warning: 299 api.hyper.rs:8080 "Deprecated API : use newapi.hyper.rs instead." "Tue, 15 Nov 1994 08:12:31 GMT"</code></li>
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</ul>
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<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
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<pre class="rust rust-example-rendered">
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<span class="kw">use</span> <span class="ident">hyper</span>::<span class="ident">header</span>::{<span class="ident">Headers</span>, <span class="ident">Warning</span>};
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<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">headers</span> <span class="op">=</span> <span class="ident">Headers</span>::<span class="ident">new</span>();
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<span class="ident">headers</span>.<span class="ident">set</span>(
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<span class="ident">Warning</span>{
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<span class="ident">code</span>: <span class="number">299</span>,
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<span class="ident">agent</span>: <span class="string">"api.hyper.rs"</span>.<span class="ident">to_owned</span>(),
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<span class="ident">text</span>: <span class="string">"Deprecated"</span>.<span class="ident">to_owned</span>(),
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<span class="ident">date</span>: <span class="prelude-val">None</span>
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}
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);</pre>
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<pre class="rust rust-example-rendered">
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<span class="kw">use</span> <span class="ident">hyper</span>::<span class="ident">header</span>::{<span class="ident">Headers</span>, <span class="ident">HttpDate</span>, <span class="ident">Warning</span>};
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<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">headers</span> <span class="op">=</span> <span class="ident">Headers</span>::<span class="ident">new</span>();
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<span class="ident">headers</span>.<span class="ident">set</span>(
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<span class="ident">Warning</span>{
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<span class="ident">code</span>: <span class="number">299</span>,
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<span class="ident">agent</span>: <span class="string">"api.hyper.rs"</span>.<span class="ident">to_owned</span>(),
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<span class="ident">text</span>: <span class="string">"Deprecated"</span>.<span class="ident">to_owned</span>(),
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<span class="ident">date</span>: <span class="string">"Tue, 15 Nov 1994 08:12:31 GMT"</span>.<span class="ident">parse</span>::<span class="op"><</span><span class="ident">HttpDate</span><span class="op">></span>().<span class="ident">ok</span>()
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}
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);</pre>
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<pre class="rust rust-example-rendered">
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<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">time</span>::<span class="ident">SystemTime</span>;
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<span class="kw">use</span> <span class="ident">hyper</span>::<span class="ident">header</span>::{<span class="ident">Headers</span>, <span class="ident">Warning</span>};
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<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">headers</span> <span class="op">=</span> <span class="ident">Headers</span>::<span class="ident">new</span>();
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<span class="ident">headers</span>.<span class="ident">set</span>(
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<span class="ident">Warning</span>{
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<span class="ident">code</span>: <span class="number">199</span>,
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<span class="ident">agent</span>: <span class="string">"api.hyper.rs"</span>.<span class="ident">to_owned</span>(),
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<span class="ident">text</span>: <span class="string">"Deprecated"</span>.<span class="ident">to_owned</span>(),
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<span class="ident">date</span>: <span class="prelude-val">Some</span>(<span class="ident">SystemTime</span>::<span class="ident">now</span>().<span class="ident">into</span>())
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}
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);</pre>
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</div><h2 id='fields' class='fields small-section-header'>
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Fields<a href='#fields' class='anchor'></a></h2><span id="structfield.code" class="structfield small-section-header">
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<a href="#structfield.code" class="anchor field"></a>
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<span id="code.v" class='invisible'>
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<code>code: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a></code>
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</span></span><div class='docblock'><p>The 3 digit warn code.</p>
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</div><span id="structfield.agent" class="structfield small-section-header">
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<a href="#structfield.agent" class="anchor field"></a>
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<span id="agent.v" class='invisible'>
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<code>agent: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/string/struct.String.html" title="struct alloc::string::String">String</a></code>
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</span></span><div class='docblock'><p>The name or pseudonym of the server adding this header.</p>
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</div><span id="structfield.text" class="structfield small-section-header">
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<a href="#structfield.text" class="anchor field"></a>
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<span id="text.v" class='invisible'>
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<code>text: <a class="struct" href="https://doc.rust-lang.org/nightly/alloc/string/struct.String.html" title="struct alloc::string::String">String</a></code>
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</span></span><div class='docblock'><p>The warning message describing the error.</p>
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</div><span id="structfield.date" class="structfield small-section-header">
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<a href="#structfield.date" class="anchor field"></a>
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<span id="date.v" class='invisible'>
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<code>date: <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="../../hyper/header/struct.HttpDate.html" title="struct hyper::header::HttpDate">HttpDate</a>></code>
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</span></span><div class='docblock'><p>An optional warning date.</p>
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</div>
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<h2 id='implementations' class='small-section-header'>
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Trait Implementations<a href='#implementations' class='anchor'></a>
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</h2>
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<h3 id='impl-PartialEq' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html" title="trait core::cmp::PartialEq">PartialEq</a> for <a class="struct" href="../../hyper/header/struct.Warning.html" title="struct hyper::header::Warning">Warning</a></code><a href='#impl-PartialEq' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/hyper/header/common/warning.rs.html#79' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.eq' class="method"><span id='eq.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#tymethod.eq' class='fnname'>eq</a>(&self, __arg_0: &<a class="struct" href="../../hyper/header/struct.Warning.html" title="struct hyper::header::Warning">Warning</a>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/hyper/header/common/warning.rs.html#79' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>This method tests for <code>self</code> and <code>other</code> values to be equal, and is used by <code>==</code>. <a href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#tymethod.eq">Read more</a></p>
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</div><h4 id='method.ne' class="method"><span id='ne.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/cmp/trait.PartialEq.html#method.ne' class='fnname'>ne</a>(&self, __arg_0: &<a class="struct" href="../../hyper/header/struct.Warning.html" title="struct hyper::header::Warning">Warning</a>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/hyper/header/common/warning.rs.html#79' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>This method tests for <code>!=</code>.</p>
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</div></div><h3 id='impl-Clone' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="../../hyper/header/struct.Warning.html" title="struct hyper::header::Warning">Warning</a></code><a href='#impl-Clone' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/hyper/header/common/warning.rs.html#79' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.clone' class="method"><span id='clone.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone' class='fnname'>clone</a>(&self) -> <a class="struct" href="../../hyper/header/struct.Warning.html" title="struct hyper::header::Warning">Warning</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/hyper/header/common/warning.rs.html#79' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Returns a copy of the value. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#tymethod.clone">Read more</a></p>
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</div><h4 id='method.clone_from' class="method"><span id='clone_from.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from' class='fnname'>clone_from</a>(&mut self, source: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>Self)</code></span><span class='out-of-band'><div class='ghost'></div><div class='since' title='Stable since Rust version 1.0.0'>1.0.0</div><a class='srclink' href='https://doc.rust-lang.org/nightly/src/core/clone.rs.html#112-114' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html#method.clone_from">Read more</a></p>
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</div></div><h3 id='impl-Debug' class='impl'><span class='in-band'><code>impl <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="../../hyper/header/struct.Warning.html" title="struct hyper::header::Warning">Warning</a></code><a href='#impl-Debug' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/hyper/header/common/warning.rs.html#79' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.fmt' class="method"><span id='fmt.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Debug.html#tymethod.fmt' class='fnname'>fmt</a>(&self, __arg_0: &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></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/hyper/header/common/warning.rs.html#79' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><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><h3 id='impl-Header' class='impl'><span class='in-band'><code>impl <a class="trait" href="../../hyper/header/trait.Header.html" title="trait hyper::header::Header">Header</a> for <a class="struct" href="../../hyper/header/struct.Warning.html" title="struct hyper::header::Warning">Warning</a></code><a href='#impl-Header' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/hyper/header/common/warning.rs.html#91-104' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.header_name' class="method"><span id='header_name.v' class='invisible'><code>fn <a href='../../hyper/header/trait.Header.html#tymethod.header_name' class='fnname'>header_name</a>() -> &'static <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/hyper/header/common/warning.rs.html#92-95' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Returns the name of the header field this belongs to. <a href="../../hyper/header/trait.Header.html#tymethod.header_name">Read more</a></p>
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</div><h4 id='method.parse_header' class="method"><span id='parse_header.v' class='invisible'><code>fn <a href='../../hyper/header/trait.Header.html#tymethod.parse_header' class='fnname'>parse_header</a>(raw: &<a class="struct" href="../../hyper/header/struct.Raw.html" title="struct hyper::header::Raw">Raw</a>) -> <a class="type" href="../../hyper/error/type.Result.html" title="type hyper::error::Result">Result</a><<a class="struct" href="../../hyper/header/struct.Warning.html" title="struct hyper::header::Warning">Warning</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/hyper/header/common/warning.rs.html#97-99' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Parse a header from a raw stream of bytes. <a href="../../hyper/header/trait.Header.html#tymethod.parse_header">Read more</a></p>
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</div><h4 id='method.fmt_header' class="method"><span id='fmt_header.v' class='invisible'><code>fn <a href='../../hyper/header/trait.Header.html#tymethod.fmt_header' class='fnname'>fmt_header</a>(&self, f: &mut <a class="struct" href="../../hyper/header/struct.Formatter.html" title="struct hyper::header::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></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/hyper/header/common/warning.rs.html#101-103' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Format a header to outgoing stream. <a href="../../hyper/header/trait.Header.html#tymethod.fmt_header">Read more</a></p>
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</div></div><h3 id='impl-Display' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html" title="trait core::fmt::Display">Display</a> for <a class="struct" href="../../hyper/header/struct.Warning.html" title="struct hyper::header::Warning">Warning</a></code><a href='#impl-Display' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/hyper/header/common/warning.rs.html#106-113' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='method.fmt-1' class="method"><span id='fmt.v-1' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/fmt/trait.Display.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></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/hyper/header/common/warning.rs.html#107-112' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/nightly/core/fmt/trait.Display.html#tymethod.fmt">Read more</a></p>
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</div></div><h3 id='impl-FromStr' class='impl'><span class='in-band'><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/str/trait.FromStr.html" title="trait core::str::FromStr">FromStr</a> for <a class="struct" href="../../hyper/header/struct.Warning.html" title="struct hyper::header::Warning">Warning</a></code><a href='#impl-FromStr' class='anchor'></a></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/hyper/header/common/warning.rs.html#115-149' title='goto source code'>[src]</a></span></h3>
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<div class='impl-items'><h4 id='associatedtype.Err' class="type"><span id='Err.t' class='invisible'><code>type <a href='https://doc.rust-lang.org/nightly/core/str/trait.FromStr.html#associatedtype.Err' class="type">Err</a> = <a class="enum" href="../../hyper/error/enum.Error.html" title="enum hyper::error::Error">Error</a></code></span></h4>
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<div class='docblock'><p>The associated error which can be returned from parsing.</p>
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</div><h4 id='method.from_str' class="method"><span id='from_str.v' class='invisible'><code>fn <a href='https://doc.rust-lang.org/nightly/core/str/trait.FromStr.html#tymethod.from_str' class='fnname'>from_str</a>(s: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>) -> <a class="type" href="../../hyper/error/type.Result.html" title="type hyper::error::Result">Result</a><<a class="struct" href="../../hyper/header/struct.Warning.html" title="struct hyper::header::Warning">Warning</a>></code></span><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../../src/hyper/header/common/warning.rs.html#118-148' title='goto source code'>[src]</a></span></h4>
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<div class='docblock'><p>Parses a string <code>s</code> to return a value of this type. <a href="https://doc.rust-lang.org/nightly/core/str/trait.FromStr.html#tymethod.from_str">Read more</a></p>
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