Update documentation for Gun 1.0

author: Loïc Hoguin <[email protected]> 2018-06-04 12:59:26 +0200
committer: Loïc Hoguin <[email protected]> 2018-06-04 12:59:26 +0200
commit: 2b588340af501825f3ab03f2e76dba0353c98fae (patch)
tree: ad990a44d67f30e9804b606e0282ca9adfa37433 /docs/en/gun/1.0/manual/gun.head/index.html
parent: 791b95225695b3badff7cc4bb4f0f1ed373c74de (diff)
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+<!DOCTYPE html>
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+<div id="contents" class="two_col">
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+
+<h1 class="lined-header"><span>gun:head(3)</span></h1>
+
+<div class="sect1">
+<h2 id="_name">Name</h2>
+<div class="sectionbody">
+<div class="paragraph"><p>gun:head - Get headers of a resource representation</p></div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">Description</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content"><!-- Generator: GNU source-highlight
+by Lorenzo Bettini
+http://www.lorenzobettini.it
+http://www.gnu.org/software/src-highlite -->
+<pre><tt><span style="font-weight: bold"><span style="color: #000000">head</span></span>(<span style="color: #009900">ConnPid</span>, <span style="color: #009900">Path</span>)
+    <span style="color: #990000">-&gt;</span> <span style="font-weight: bold"><span style="color: #000000">head</span></span>(<span style="color: #009900">ConnPid</span>, <span style="color: #009900">Path</span>, [], #{})<span style="color: #990000">.</span>
+
+<span style="font-weight: bold"><span style="color: #000000">head</span></span>(<span style="color: #009900">ConnPid</span>, <span style="color: #009900">Path</span>, <span style="color: #009900">Headers</span>)
+    <span style="color: #990000">-&gt;</span> <span style="font-weight: bold"><span style="color: #000000">head</span></span>(<span style="color: #009900">ConnPid</span>, <span style="color: #009900">Path</span>, <span style="color: #009900">Headers</span>, #{})
+
+<span style="font-weight: bold"><span style="color: #000000">head</span></span>(<span style="color: #009900">ConnPid</span>, <span style="color: #009900">Path</span>, <span style="color: #009900">Headers</span>, <span style="color: #009900">ReqOpts</span>)
+    <span style="color: #990000">-&gt;</span> <span style="color: #009900">StreamRef</span>
+
+<span style="color: #009900">ConnPid</span>   <span style="color: #990000">::</span> <span style="font-weight: bold"><span style="color: #000080">pid</span></span>()
+<span style="color: #009900">Path</span>      <span style="color: #990000">::</span> <span style="font-weight: bold"><span style="color: #000000">iodata</span></span>()
+<span style="color: #009900">Headers</span>   <span style="color: #990000">::</span> [{<span style="font-weight: bold"><span style="color: #000080">binary</span></span>(), <span style="font-weight: bold"><span style="color: #000000">iodata</span></span>()}]
+<span style="color: #009900">ReqOpts</span>   <span style="color: #990000">::</span> <span style="font-weight: bold"><span style="color: #000000">gun:req_opts</span></span>()
+<span style="color: #009900">StreamRef</span> <span style="color: #990000">::</span> <span style="font-weight: bold"><span style="color: #000080">reference</span></span>()</tt></pre></div></div>
+<div class="paragraph"><p>Get headers of a resource representation.</p></div>
+<div class="paragraph"><p>This function performs the same operation as
+<a href="../gun.get">gun:get(3)</a>, except the server will not
+send the resource representation, only the response&#8217;s status
+code and headers.</p></div>
+<div class="paragraph"><p>While servers are supposed to send the same headers as for
+a GET request, they sometimes will not. For example the
+<code>content-length</code> header may be dropped from the response.</p></div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_arguments">Arguments</h2>
+<div class="sectionbody">
+<div class="dlist"><dl>
+<dt class="hdlist1">
+ConnPid
+</dt>
+<dd>
+<p>
+The pid of the Gun connection process.
+</p>
+</dd>
+<dt class="hdlist1">
+Path
+</dt>
+<dd>
+<p>
+Path to the resource.
+</p>
+</dd>
+<dt class="hdlist1">
+Headers
+</dt>
+<dd>
+<p>
+Additional request headers.
+</p>
+</dd>
+<dt class="hdlist1">
+ReqOpts
+</dt>
+<dd>
+<p>
+Request options.
+</p>
+</dd>
+</dl></div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_value">Return value</h2>
+<div class="sectionbody">
+<div class="paragraph"><p>A reference that identifies the newly created stream is
+returned. It is this reference that must be passed in
+subsequent calls and will be received in messages related
+to this new stream.</p></div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_changelog">Changelog</h2>
+<div class="sectionbody">
+<div class="ulist"><ul>
+<li>
+<p>
+<strong>1.0</strong>: Function introduced.
+</p>
+</li>
+</ul></div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_examples">Examples</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="title">Get headers of a resource representation</div>
+<div class="content"><!-- Generator: GNU source-highlight
+by Lorenzo Bettini
+http://www.lorenzobettini.it
+http://www.gnu.org/software/src-highlite -->
+<pre><tt><span style="color: #009900">StreamRef</span> <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">gun:head</span></span>(<span style="color: #009900">ConnPid</span>, <span style="color: #FF0000">"/articles"</span>, [
+    {<span style="color: #990000">&lt;&lt;</span><span style="color: #FF0000">"accept"</span><span style="color: #990000">&gt;&gt;</span>, <span style="color: #990000">&lt;&lt;</span><span style="color: #FF0000">"text/html;q=1.0, application/xml;q=0.1"</span><span style="color: #990000">&gt;&gt;</span>}
+])<span style="color: #990000">.</span></tt></pre></div></div>
+<div class="listingblock">
+<div class="title">Get headers of a resource representation with request options</div>
+<div class="content"><!-- Generator: GNU source-highlight
+by Lorenzo Bettini
+http://www.lorenzobettini.it
+http://www.gnu.org/software/src-highlite -->
+<pre><tt><span style="color: #009900">StreamRef</span> <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">gun:head</span></span>(<span style="color: #009900">ConnPid</span>, <span style="color: #FF0000">"/articles"</span>, [], #{
+    <span style="color: #0000FF">reply_to</span> <span style="color: #990000">=&gt;</span> <span style="color: #009900">ReplyToPid</span>
+})<span style="color: #990000">.</span></tt></pre></div></div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">See also</h2>
+<div class="sectionbody">
+<div class="paragraph"><p><a href="../gun">gun(3)</a>,
+<a href="../gun.get">gun:head(3)</a>,
+<a href="../gun.await">gun:await(3)</a>,
+<a href="../gun_push">gun_push(3)</a>,
+<a href="../gun_inform">gun_inform(3)</a>,
+<a href="../gun_response">gun_response(3)</a></p></div>
+</div>
+</div>
+
+
+
+
+
+</div>
+
+<div class="span3 sidecol">
+
+
+<h3>
+	Gun
+	1.0
+	Function Reference
+	
+</h3>
+
+<ul>
+	
+		<li><a href="/docs/en/gun/1.0/guide">User Guide</a></li>
+	
+	
+		<li><a href="/docs/en/gun/1.0/manual">Function Reference</a></li>
+	
+	
+</ul>
+
+<h4 id="docs-nav">Navigation</h4>
+
+<h4>Version select</h4>
+<ul>
+	
+	
+	
+		<li><a href="/docs/en/gun/1.0/manual">1.0</a></li>
+	
+</ul>
+
+</div>
+</div>
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author	Loïc Hoguin <[email protected]>	2018-06-04 12:59:26 +0200
committer	Loïc Hoguin <[email protected]>	2018-06-04 12:59:26 +0200
commit	2b588340af501825f3ab03f2e76dba0353c98fae (patch)
tree	ad990a44d67f30e9804b606e0282ca9adfa37433 /docs/en/gun/1.0/manual/gun.head/index.html
parent	791b95225695b3badff7cc4bb4f0f1ed373c74de (diff)
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