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<h1 class='fqn'><span class='in-band'>Module <a href='../index.html'>hyper</a>::<wbr><a class="mod" href=''>header</a></span><span class='out-of-band'><span id='render-detail'>
<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
[<span class='inner'>&#x2212;</span>]
</a>
</span><a class='srclink' href='../../src/hyper/header/mod.rs.html#1-1129' title='goto source code'>[src]</a></span></h1>
<div class='docblock'><p>Headers container, and common header fields.</p>
<p>hyper has the opinion that Headers should be strongly-typed, because that's
why we're using Rust in the first place. To set or get any header, an object
must implement the <code>Header</code> trait from this module. Several common headers
are already provided, such as <code>Host</code>, <code>ContentType</code>, <code>UserAgent</code>, and others.</p>
<h1 id="why-typed" class="section-header"><a href="#why-typed">Why Typed?</a></h1>
<p>Or, why not stringly-typed? Types give the following advantages:</p>
<ul>
<li>More difficult to typo, since typos in types should be caught by the compiler</li>
<li>Parsing to a proper type by default</li>
</ul>
<h1 id="defining-custom-headers" class="section-header"><a href="#defining-custom-headers">Defining Custom Headers</a></h1>
<p>Hyper provides many of the most commonly used headers in HTTP. If
you need to define a custom header, it's easy to do while still taking
advantage of the type system. Hyper includes a <code>header!</code> macro for defining
many wrapper-style headers.</p>
<pre class="rust rust-example-rendered">
<span class="attribute">#[<span class="ident">macro_use</span>]</span> <span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">hyper</span>;
<span class="kw">use</span> <span class="ident">hyper</span>::<span class="ident">header</span>::<span class="ident">Headers</span>;
<span class="macro">header</span><span class="macro">!</span> { (<span class="ident">XRequestGuid</span>, <span class="string">&quot;X-Request-Guid&quot;</span>) <span class="op">=&gt;</span> [<span class="ident">String</span>] }
<span class="kw">fn</span> <span class="ident">main</span> () {
<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>();
<span class="ident">headers</span>.<span class="ident">set</span>(<span class="ident">XRequestGuid</span>(<span class="string">&quot;a proper guid&quot;</span>.<span class="ident">to_owned</span>()))
}</pre>
<p>This works well for simple &quot;string&quot; headers. If you need more control,
you can implement the trait directly.</p>
<h2 id="implementing-the-header-trait" class="section-header"><a href="#implementing-the-header-trait">Implementing the <code>Header</code> trait</a></h2>
<p>Consider a Do Not Track header. It can be true or false, but it represents
that via the numerals <code>1</code> and <code>0</code>.</p>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fmt</span>;
<span class="kw">use</span> <span class="ident">hyper</span>::<span class="ident">header</span>::{<span class="self">self</span>, <span class="ident">Header</span>, <span class="ident">Raw</span>};
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">Clone</span>, <span class="ident">Copy</span>)]</span>
<span class="kw">struct</span> <span class="ident">Dnt</span>(<span class="ident">bool</span>);
<span class="kw">impl</span> <span class="ident">Header</span> <span class="kw">for</span> <span class="ident">Dnt</span> {
<span class="kw">fn</span> <span class="ident">header_name</span>() <span class="op">-&gt;</span> <span class="kw-2">&amp;</span><span class="lifetime">&#39;static</span> <span class="ident">str</span> {
<span class="string">&quot;DNT&quot;</span>
}
<span class="kw">fn</span> <span class="ident">parse_header</span>(<span class="ident">raw</span>: <span class="kw-2">&amp;</span><span class="ident">Raw</span>) <span class="op">-&gt;</span> <span class="ident">hyper</span>::<span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">Dnt</span><span class="op">&gt;</span> {
<span class="kw">if</span> <span class="ident">raw</span>.<span class="ident">len</span>() <span class="op">==</span> <span class="number">1</span> {
<span class="kw">let</span> <span class="ident">line</span> <span class="op">=</span> <span class="kw-2">&amp;</span><span class="ident">raw</span>[<span class="number">0</span>];
<span class="kw">if</span> <span class="ident">line</span>.<span class="ident">len</span>() <span class="op">==</span> <span class="number">1</span> {
<span class="kw">let</span> <span class="ident">byte</span> <span class="op">=</span> <span class="ident">line</span>[<span class="number">0</span>];
<span class="kw">match</span> <span class="ident">byte</span> {
<span class="string">b&#39;0&#39;</span> <span class="op">=&gt;</span> <span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="ident">Dnt</span>(<span class="bool-val">true</span>)),
<span class="string">b&#39;1&#39;</span> <span class="op">=&gt;</span> <span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="ident">Dnt</span>(<span class="bool-val">false</span>)),
_ <span class="op">=&gt;</span> ()
}
}
}
<span class="prelude-val">Err</span>(<span class="ident">hyper</span>::<span class="ident">Error</span>::<span class="ident">Header</span>)
}
<span class="kw">fn</span> <span class="ident">fmt_header</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">header</span>::<span class="ident">Formatter</span>) <span class="op">-&gt;</span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="kw">let</span> <span class="ident">value</span> <span class="op">=</span> <span class="kw">if</span> <span class="self">self</span>.<span class="number">0</span> {
<span class="string">&quot;1&quot;</span>
} <span class="kw">else</span> {
<span class="string">&quot;0&quot;</span>
};
<span class="ident">f</span>.<span class="ident">fmt_line</span>(<span class="kw-2">&amp;</span><span class="ident">value</span>)
}
}</pre>
</div><h2 id='modules' class='section-header'><a href="#modules">Modules</a></h2>
<table>
<tr class=' module-item'>
<td><a class="mod" href="parsing/index.html"
title='mod hyper::header::parsing'>parsing</a></td>
<td class='docblock-short'>
<p>Utility functions for Header implementations.</p>
</td>
</tr></table><h2 id='structs' class='section-header'><a href="#structs">Structs</a></h2>
<table>
<tr class=' module-item'>
<td><a class="struct" href="struct.Accept.html"
title='struct hyper::header::Accept'>Accept</a></td>
<td class='docblock-short'>
<p><code>Accept</code> header, defined in <a href="http://tools.ietf.org/html/rfc7231#section-5.3.2">RFC7231</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.AcceptCharset.html"
title='struct hyper::header::AcceptCharset'>AcceptCharset</a></td>
<td class='docblock-short'>
<p><code>Accept-Charset</code> header, defined in
<a href="http://tools.ietf.org/html/rfc7231#section-5.3.3">RFC7231</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.AcceptEncoding.html"
title='struct hyper::header::AcceptEncoding'>AcceptEncoding</a></td>
<td class='docblock-short'>
<p><code>Accept-Encoding</code> header, defined in
<a href="http://tools.ietf.org/html/rfc7231#section-5.3.4">RFC7231</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.AcceptLanguage.html"
title='struct hyper::header::AcceptLanguage'>AcceptLanguage</a></td>
<td class='docblock-short'>
<p><code>Accept-Language</code> header, defined in
<a href="http://tools.ietf.org/html/rfc7231#section-5.3.5">RFC7231</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.AcceptRanges.html"
title='struct hyper::header::AcceptRanges'>AcceptRanges</a></td>
<td class='docblock-short'>
<p><code>Accept-Ranges</code> header, defined in
<a href="http://tools.ietf.org/html/rfc7233#section-2.3">RFC7233</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.AccessControlAllowCredentials.html"
title='struct hyper::header::AccessControlAllowCredentials'>AccessControlAllowCredentials</a></td>
<td class='docblock-short'>
<p><code>Access-Control-Allow-Credentials</code> header, part of
<a href="http://www.w3.org/TR/cors/#access-control-allow-headers-response-header">CORS</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.AccessControlAllowHeaders.html"
title='struct hyper::header::AccessControlAllowHeaders'>AccessControlAllowHeaders</a></td>
<td class='docblock-short'>
<p><code>Access-Control-Allow-Headers</code> header, part of
<a href="http://www.w3.org/TR/cors/#access-control-allow-headers-response-header">CORS</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.AccessControlAllowMethods.html"
title='struct hyper::header::AccessControlAllowMethods'>AccessControlAllowMethods</a></td>
<td class='docblock-short'>
<p><code>Access-Control-Allow-Methods</code> header, part of
<a href="http://www.w3.org/TR/cors/#access-control-allow-methods-response-header">CORS</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.AccessControlExposeHeaders.html"
title='struct hyper::header::AccessControlExposeHeaders'>AccessControlExposeHeaders</a></td>
<td class='docblock-short'>
<p><code>Access-Control-Expose-Headers</code> header, part of
<a href="http://www.w3.org/TR/cors/#access-control-expose-headers-response-header">CORS</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.AccessControlMaxAge.html"
title='struct hyper::header::AccessControlMaxAge'>AccessControlMaxAge</a></td>
<td class='docblock-short'>
<p><code>Access-Control-Max-Age</code> header, part of
<a href="http://www.w3.org/TR/cors/#access-control-max-age-response-header">CORS</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.AccessControlRequestHeaders.html"
title='struct hyper::header::AccessControlRequestHeaders'>AccessControlRequestHeaders</a></td>
<td class='docblock-short'>
<p><code>Access-Control-Request-Headers</code> header, part of
<a href="http://www.w3.org/TR/cors/#access-control-request-headers-request-header">CORS</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.AccessControlRequestMethod.html"
title='struct hyper::header::AccessControlRequestMethod'>AccessControlRequestMethod</a></td>
<td class='docblock-short'>
<p><code>Access-Control-Request-Method</code> header, part of
<a href="http://www.w3.org/TR/cors/#access-control-request-method-request-header">CORS</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Allow.html"
title='struct hyper::header::Allow'>Allow</a></td>
<td class='docblock-short'>
<p><code>Allow</code> header, defined in <a href="http://tools.ietf.org/html/rfc7231#section-7.4.1">RFC7231</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Authorization.html"
title='struct hyper::header::Authorization'>Authorization</a></td>
<td class='docblock-short'>
<p><code>Authorization</code> header, defined in <a href="https://tools.ietf.org/html/rfc7235#section-4.2">RFC7235</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Basic.html"
title='struct hyper::header::Basic'>Basic</a></td>
<td class='docblock-short'>
<p>Credential holder for Basic Authentication</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Bearer.html"
title='struct hyper::header::Bearer'>Bearer</a></td>
<td class='docblock-short'>
<p>Token holder for Bearer Authentication, most often seen with oauth</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.CacheControl.html"
title='struct hyper::header::CacheControl'>CacheControl</a></td>
<td class='docblock-short'>
<p><code>Cache-Control</code> header, defined in <a href="https://tools.ietf.org/html/rfc7234#section-5.2">RFC7234</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Connection.html"
title='struct hyper::header::Connection'>Connection</a></td>
<td class='docblock-short'>
<p><code>Connection</code> header, defined in
<a href="http://tools.ietf.org/html/rfc7230#section-6.1">RFC7230</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.ContentDisposition.html"
title='struct hyper::header::ContentDisposition'>ContentDisposition</a></td>
<td class='docblock-short'>
<p>A <code>Content-Disposition</code> header, (re)defined in <a href="https://tools.ietf.org/html/rfc6266">RFC6266</a>.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.ContentEncoding.html"
title='struct hyper::header::ContentEncoding'>ContentEncoding</a></td>
<td class='docblock-short'>
<p><code>Content-Encoding</code> header, defined in
<a href="http://tools.ietf.org/html/rfc7231#section-3.1.2.2">RFC7231</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.ContentLanguage.html"
title='struct hyper::header::ContentLanguage'>ContentLanguage</a></td>
<td class='docblock-short'>
<p><code>Content-Language</code> header, defined in
<a href="https://tools.ietf.org/html/rfc7231#section-3.1.3.2">RFC7231</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.ContentLength.html"
title='struct hyper::header::ContentLength'>ContentLength</a></td>
<td class='docblock-short'>
<p><code>Content-Length</code> header, defined in
<a href="http://tools.ietf.org/html/rfc7230#section-3.3.2">RFC7230</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.ContentLocation.html"
title='struct hyper::header::ContentLocation'>ContentLocation</a></td>
<td class='docblock-short'>
<p><code>Content-Location</code> header, defined in
<a href="https://tools.ietf.org/html/rfc7231#section-3.1.4.2">RFC7231</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.ContentRange.html"
title='struct hyper::header::ContentRange'>ContentRange</a></td>
<td class='docblock-short'>
<p><code>Content-Range</code> header, defined in
<a href="http://tools.ietf.org/html/rfc7233#section-4.2">RFC7233</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.ContentType.html"
title='struct hyper::header::ContentType'>ContentType</a></td>
<td class='docblock-short'>
<p><code>Content-Type</code> header, defined in
<a href="http://tools.ietf.org/html/rfc7231#section-3.1.1.5">RFC7231</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Cookie.html"
title='struct hyper::header::Cookie'>Cookie</a></td>
<td class='docblock-short'>
<p><code>Cookie</code> header, defined in <a href="http://tools.ietf.org/html/rfc6265#section-5.4">RFC6265</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.CookieIter.html"
title='struct hyper::header::CookieIter'>CookieIter</a></td>
<td class='docblock-short'>
<p>Iterator for cookie.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Date.html"
title='struct hyper::header::Date'>Date</a></td>
<td class='docblock-short'>
<p><code>Date</code> header, defined in <a href="http://tools.ietf.org/html/rfc7231#section-7.1.1.2">RFC7231</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.ETag.html"
title='struct hyper::header::ETag'>ETag</a></td>
<td class='docblock-short'>
<p><code>ETag</code> header, defined in <a href="http://tools.ietf.org/html/rfc7232#section-2.3">RFC7232</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.EntityTag.html"
title='struct hyper::header::EntityTag'>EntityTag</a></td>
<td class='docblock-short'>
<p>An entity tag, defined in <a href="https://tools.ietf.org/html/rfc7232#section-2.3">RFC7232</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Expires.html"
title='struct hyper::header::Expires'>Expires</a></td>
<td class='docblock-short'>
<p><code>Expires</code> header, defined in <a href="http://tools.ietf.org/html/rfc7234#section-5.3">RFC7234</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Formatter.html"
title='struct hyper::header::Formatter'>Formatter</a></td>
<td class='docblock-short'>
<p>A formatter used to serialize headers to an output stream.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.From.html"
title='struct hyper::header::From'>From</a></td>
<td class='docblock-short'>
<p><code>From</code> header, defined in <a href="http://tools.ietf.org/html/rfc7231#section-5.5.1">RFC7231</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.HeaderView.html"
title='struct hyper::header::HeaderView'>HeaderView</a></td>
<td class='docblock-short'>
<p>Returned with the <code>HeadersItems</code> iterator.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Headers.html"
title='struct hyper::header::Headers'>Headers</a></td>
<td class='docblock-short'>
<p>A map of header fields on requests and responses.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.HeadersItems.html"
title='struct hyper::header::HeadersItems'>HeadersItems</a></td>
<td class='docblock-short'>
<p>An <code>Iterator</code> over the fields in a <code>Headers</code> map.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Host.html"
title='struct hyper::header::Host'>Host</a></td>
<td class='docblock-short'>
<p>The <code>Host</code> header.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.HttpDate.html"
title='struct hyper::header::HttpDate'>HttpDate</a></td>
<td class='docblock-short'>
<p>A timestamp with HTTP formatting and parsing</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.IfModifiedSince.html"
title='struct hyper::header::IfModifiedSince'>IfModifiedSince</a></td>
<td class='docblock-short'>
<p><code>If-Modified-Since</code> header, defined in
<a href="http://tools.ietf.org/html/rfc7232#section-3.3">RFC7232</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.IfUnmodifiedSince.html"
title='struct hyper::header::IfUnmodifiedSince'>IfUnmodifiedSince</a></td>
<td class='docblock-short'>
<p><code>If-Unmodified-Since</code> header, defined in
<a href="http://tools.ietf.org/html/rfc7232#section-3.4">RFC7232</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.LanguageTag.html"
title='struct hyper::header::LanguageTag'>LanguageTag</a></td>
<td class='docblock-short'>
<p>A language tag as described in <a href="http://tools.ietf.org/html/bcp47">BCP47</a>.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.LastEventId.html"
title='struct hyper::header::LastEventId'>LastEventId</a></td>
<td class='docblock-short'>
<p><code>Last-Event-ID</code> header, defined in
<a href="https://html.spec.whatwg.org/multipage/references.html#refsRFC3864">RFC3864</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.LastModified.html"
title='struct hyper::header::LastModified'>LastModified</a></td>
<td class='docblock-short'>
<p><code>Last-Modified</code> header, defined in
<a href="http://tools.ietf.org/html/rfc7232#section-2.2">RFC7232</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Link.html"
title='struct hyper::header::Link'>Link</a></td>
<td class='docblock-short'>
<p>The <code>Link</code> header, defined in
<a href="http://tools.ietf.org/html/rfc5988#section-5">RFC5988</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.LinkValue.html"
title='struct hyper::header::LinkValue'>LinkValue</a></td>
<td class='docblock-short'>
<p>A single <code>link-value</code> of a <code>Link</code> header, based on:
<a href="http://tools.ietf.org/html/rfc5988#section-5">RFC5988</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Location.html"
title='struct hyper::header::Location'>Location</a></td>
<td class='docblock-short'>
<p><code>Location</code> header, defined in
<a href="http://tools.ietf.org/html/rfc7231#section-7.1.2">RFC7231</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Origin.html"
title='struct hyper::header::Origin'>Origin</a></td>
<td class='docblock-short'>
<p>The <code>Origin</code> header.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Prefer.html"
title='struct hyper::header::Prefer'>Prefer</a></td>
<td class='docblock-short'>
<p><code>Prefer</code> header, defined in <a href="http://tools.ietf.org/html/rfc7240">RFC7240</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.PreferenceApplied.html"
title='struct hyper::header::PreferenceApplied'>PreferenceApplied</a></td>
<td class='docblock-short'>
<p><code>Preference-Applied</code> header, defined in <a href="http://tools.ietf.org/html/rfc7240">RFC7240</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Protocol.html"
title='struct hyper::header::Protocol'>Protocol</a></td>
<td class='docblock-short'>
<p>Protocols that appear in the <code>Upgrade</code> header field</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.ProxyAuthorization.html"
title='struct hyper::header::ProxyAuthorization'>ProxyAuthorization</a></td>
<td class='docblock-short'>
<p><code>Proxy-Authorization</code> header, defined in <a href="https://tools.ietf.org/html/rfc7235#section-4.4">RFC7235</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Quality.html"
title='struct hyper::header::Quality'>Quality</a></td>
<td class='docblock-short'>
<p>Represents a quality used in quality values.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.QualityItem.html"
title='struct hyper::header::QualityItem'>QualityItem</a></td>
<td class='docblock-short'>
<p>Represents an item with a quality value as defined in
<a href="https://tools.ietf.org/html/rfc7231#section-5.3.1">RFC7231</a>.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Raw.html"
title='struct hyper::header::Raw'>Raw</a></td>
<td class='docblock-short'>
<p>A raw header value.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Referer.html"
title='struct hyper::header::Referer'>Referer</a></td>
<td class='docblock-short'>
<p><code>Referer</code> header, defined in
<a href="http://tools.ietf.org/html/rfc7231#section-5.5.2">RFC7231</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Server.html"
title='struct hyper::header::Server'>Server</a></td>
<td class='docblock-short'>
<p><code>Server</code> header, defined in <a href="http://tools.ietf.org/html/rfc7231#section-7.4.2">RFC7231</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.SetCookie.html"
title='struct hyper::header::SetCookie'>SetCookie</a></td>
<td class='docblock-short'>
<p><code>Set-Cookie</code> header, defined <a href="http://tools.ietf.org/html/rfc6265#section-4.1">RFC6265</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.StrictTransportSecurity.html"
title='struct hyper::header::StrictTransportSecurity'>StrictTransportSecurity</a></td>
<td class='docblock-short'>
<p><code>StrictTransportSecurity</code> header, defined in <a href="https://tools.ietf.org/html/rfc6797">RFC6797</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Te.html"
title='struct hyper::header::Te'>Te</a></td>
<td class='docblock-short'>
<p><code>TE</code> header, defined in
<a href="http://tools.ietf.org/html/rfc7230#section-4.3">RFC7230</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.TransferEncoding.html"
title='struct hyper::header::TransferEncoding'>TransferEncoding</a></td>
<td class='docblock-short'>
<p><code>Transfer-Encoding</code> header, defined in
<a href="http://tools.ietf.org/html/rfc7230#section-3.3.1">RFC7230</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Upgrade.html"
title='struct hyper::header::Upgrade'>Upgrade</a></td>
<td class='docblock-short'>
<p><code>Upgrade</code> header, defined in <a href="http://tools.ietf.org/html/rfc7230#section-6.7">RFC7230</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.UserAgent.html"
title='struct hyper::header::UserAgent'>UserAgent</a></td>
<td class='docblock-short'>
<p><code>User-Agent</code> header, defined in
<a href="http://tools.ietf.org/html/rfc7231#section-5.5.3">RFC7231</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="struct" href="struct.Warning.html"
title='struct hyper::header::Warning'>Warning</a></td>
<td class='docblock-short'>
<p><code>Warning</code> header, defined in <a href="https://tools.ietf.org/html/rfc7234#section-5.5">RFC7234</a></p>
</td>
</tr></table><h2 id='enums' class='section-header'><a href="#enums">Enums</a></h2>
<table>
<tr class=' module-item'>
<td><a class="enum" href="enum.AccessControlAllowOrigin.html"
title='enum hyper::header::AccessControlAllowOrigin'>AccessControlAllowOrigin</a></td>
<td class='docblock-short'>
<p>The <code>Access-Control-Allow-Origin</code> response header,
part of <a href="http://www.w3.org/TR/cors/#access-control-allow-origin-response-header">CORS</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.ByteRangeSpec.html"
title='enum hyper::header::ByteRangeSpec'>ByteRangeSpec</a></td>
<td class='docblock-short'>
<p>Each <code>Range::Bytes</code> header can contain one or more <code>ByteRangeSpecs</code>.
Each <code>ByteRangeSpec</code> defines a range of bytes to fetch</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.CacheDirective.html"
title='enum hyper::header::CacheDirective'>CacheDirective</a></td>
<td class='docblock-short'>
<p><code>CacheControl</code> contains a list of these directives.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.Charset.html"
title='enum hyper::header::Charset'>Charset</a></td>
<td class='docblock-short'>
<p>A Mime charset.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.ConnectionOption.html"
title='enum hyper::header::ConnectionOption'>ConnectionOption</a></td>
<td class='docblock-short'>
<p>Values that can be in the <code>Connection</code> header.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.ContentRangeSpec.html"
title='enum hyper::header::ContentRangeSpec'>ContentRangeSpec</a></td>
<td class='docblock-short'>
<p>Content-Range, described in <a href="https://tools.ietf.org/html/rfc7233#section-4.2">RFC7233</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.DispositionParam.html"
title='enum hyper::header::DispositionParam'>DispositionParam</a></td>
<td class='docblock-short'>
<p>A parameter to the disposition type.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.DispositionType.html"
title='enum hyper::header::DispositionType'>DispositionType</a></td>
<td class='docblock-short'>
<p>The implied disposition of the content of the HTTP body.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.Encoding.html"
title='enum hyper::header::Encoding'>Encoding</a></td>
<td class='docblock-short'>
<p>A value to represent an encoding used in <code>Transfer-Encoding</code>
or <code>Accept-Encoding</code> header.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.Expect.html"
title='enum hyper::header::Expect'>Expect</a></td>
<td class='docblock-short'>
<p>The <code>Expect</code> header.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.IfMatch.html"
title='enum hyper::header::IfMatch'>IfMatch</a></td>
<td class='docblock-short'>
<p><code>If-Match</code> header, defined in
<a href="https://tools.ietf.org/html/rfc7232#section-3.1">RFC7232</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.IfNoneMatch.html"
title='enum hyper::header::IfNoneMatch'>IfNoneMatch</a></td>
<td class='docblock-short'>
<p><code>If-None-Match</code> header, defined in
<a href="https://tools.ietf.org/html/rfc7232#section-3.2">RFC7232</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.IfRange.html"
title='enum hyper::header::IfRange'>IfRange</a></td>
<td class='docblock-short'>
<p><code>If-Range</code> header, defined in <a href="http://tools.ietf.org/html/rfc7233#section-3.2">RFC7233</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.MediaDesc.html"
title='enum hyper::header::MediaDesc'>MediaDesc</a></td>
<td class='docblock-short'>
<p>A Media Descriptors Enum based on:
<a href="https://www.w3.org/TR/html401/types.html#h-6.13">https://www.w3.org/TR/html401/types.html#h-6.13</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.Pragma.html"
title='enum hyper::header::Pragma'>Pragma</a></td>
<td class='docblock-short'>
<p>The <code>Pragma</code> header defined by HTTP/1.0.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.Preference.html"
title='enum hyper::header::Preference'>Preference</a></td>
<td class='docblock-short'>
<p>Prefer contains a list of these preferences.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.ProtocolName.html"
title='enum hyper::header::ProtocolName'>ProtocolName</a></td>
<td class='docblock-short'>
<p>A protocol name used to identify a specific protocol. Names are case-sensitive
except for the <code>WebSocket</code> value.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.Range.html"
title='enum hyper::header::Range'>Range</a></td>
<td class='docblock-short'>
<p><code>Range</code> header, defined in <a href="https://tools.ietf.org/html/rfc7233#section-3.1">RFC7233</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.RangeUnit.html"
title='enum hyper::header::RangeUnit'>RangeUnit</a></td>
<td class='docblock-short'>
<p>Range Units, described in <a href="http://tools.ietf.org/html/rfc7233#section-2">RFC7233</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.ReferrerPolicy.html"
title='enum hyper::header::ReferrerPolicy'>ReferrerPolicy</a></td>
<td class='docblock-short'>
<p><code>Referrer-Policy</code> header, part of
<a href="https://www.w3.org/TR/referrer-policy/#referrer-policy-header">Referrer Policy</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.RelationType.html"
title='enum hyper::header::RelationType'>RelationType</a></td>
<td class='docblock-short'>
<p>A Link Relation Type Enum based on:
<a href="https://tools.ietf.org/html/rfc5988#section-6.2.2">RFC5988</a></p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.RetryAfter.html"
title='enum hyper::header::RetryAfter'>RetryAfter</a></td>
<td class='docblock-short'>
<p>The <code>Retry-After</code> header.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="enum" href="enum.Vary.html"
title='enum hyper::header::Vary'>Vary</a></td>
<td class='docblock-short'>
<p><code>Vary</code> header, defined in <a href="https://tools.ietf.org/html/rfc7231#section-7.1.4">RFC7231</a></p>
</td>
</tr></table><h2 id='traits' class='section-header'><a href="#traits">Traits</a></h2>
<table>
<tr class=' module-item'>
<td><a class="trait" href="trait.Header.html"
title='trait hyper::header::Header'>Header</a></td>
<td class='docblock-short'>
<p>A trait for any object that will represent a header field and value.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="trait" href="trait.Scheme.html"
title='trait hyper::header::Scheme'>Scheme</a></td>
<td class='docblock-short'>
<p>An Authorization scheme to be used in the header.</p>
</td>
</tr></table><h2 id='functions' class='section-header'><a href="#functions">Functions</a></h2>
<table>
<tr class=' module-item'>
<td><a class="fn" href="fn.q.html"
title='fn hyper::header::q'>q</a></td>
<td class='docblock-short'>
<p>Convenience function to create a <code>Quality</code> from a float or integer.</p>
</td>
</tr>
<tr class=' module-item'>
<td><a class="fn" href="fn.qitem.html"
title='fn hyper::header::qitem'>qitem</a></td>
<td class='docblock-short'>
<p>Convenience function to wrap a value in a <code>QualityItem</code>
Sets <code>q</code> to the default 1.0</p>
</td>
</tr></table></section>
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