Cowboy 2.4.0

author: Loïc Hoguin <[email protected]> 2018-05-02 11:35:26 +0200
committer: Loïc Hoguin <[email protected]> 2018-05-02 11:35:26 +0200
commit: fec98300ec9af6c8b5f3120a60f217983c451076 (patch)
tree: 9772977293124e8b9b5b253e44d8c2695cddfb44 /docs/en/cowboy/2.4/manual/cowboy_req.push/index.html
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+<h1 class="lined-header"><span>cowboy_req:push(3)</span></h1>
+
+<div class="sect1">
+<h2 id="_name">Name</h2>
+<div class="sectionbody">
+<div class="paragraph"><p>cowboy_req:push - Push a resource to the client</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">push</span></span>(<span style="color: #009900">Path</span>, <span style="color: #009900">Headers</span>, <span style="color: #009900">Req</span> <span style="color: #990000">::</span> <span style="font-weight: bold"><span style="color: #000000">cowboy_req:req</span></span>())
+    <span style="color: #990000">-&gt;</span> <span style="font-weight: bold"><span style="color: #000000">push</span></span>(<span style="color: #009900">Path</span>, <span style="color: #009900">Headers</span>, <span style="color: #009900">Req</span>, #{})
+
+<span style="font-weight: bold"><span style="color: #000000">push</span></span>(<span style="color: #009900">Path</span>, <span style="color: #009900">Headers</span>, <span style="color: #009900">Req</span> <span style="color: #990000">::</span> <span style="font-weight: bold"><span style="color: #000000">cowboy_req:req</span></span>(), <span style="color: #009900">Opts</span>)
+    <span style="color: #990000">-&gt;</span> <span style="color: #FF6600">ok</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="font-style: italic"><span style="color: #9A1900">%% case sensitive</span></span>
+<span style="color: #009900">Headers</span> <span style="color: #990000">::</span> <span style="font-weight: bold"><span style="color: #000000">cowboy:http_headers</span></span>()
+<span style="color: #009900">Opts</span>    <span style="color: #990000">::</span> <span style="font-weight: bold"><span style="color: #000000">cowboy_req:push_opts</span></span>()</tt></pre></div></div>
+<div class="paragraph"><p>Push a resource to the client.</p></div>
+<div class="paragraph"><p>Cowboy handles push requests the same way as if they came
+from the client, including the creation of a request handling
+process, routing and middlewares and so on.</p></div>
+<div class="paragraph"><p>This function does nothing when the HTTP/1.1 protocol is
+used. You may call it safely without first checking whether
+the connection uses HTTP/2.</p></div>
+<div class="paragraph"><p>The header names must be given as lowercase binary strings.
+While header names are case insensitive, Cowboy requires them
+to be given as lowercase to function properly.</p></div>
+<div class="paragraph"><p>Note that the headers must be the headers the client is expected
+to send if it were to perform the request. They are therefore
+request headers, and not response headers.</p></div>
+<div class="paragraph"><p>By default, Cowboy will use the GET method, an empty query string,
+and take the scheme, host and port directly from the current
+request&#8217;s URI. You can override them by passing options.</p></div>
+<div class="paragraph"><p>It is not possible to push resources after sending a response.
+Any attempt will result in an error.</p></div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_arguments">Arguments</h2>
+<div class="sectionbody">
+<div class="dlist"><dl>
+<dt class="hdlist1">
+Path
+</dt>
+<dd>
+<p>
+The status code for the response.
+</p>
+</dd>
+<dt class="hdlist1">
+Headers
+</dt>
+<dd>
+<p>
+The response headers.
+</p>
+</dd>
+</dl></div>
+<div class="paragraph"><p>Header names must be given as lowercase binary strings.</p></div>
+<div class="dlist"><dl>
+<dt class="hdlist1">
+Req
+</dt>
+<dd>
+<p>
+The Req object.
+</p>
+</dd>
+<dt class="hdlist1">
+Opts
+</dt>
+<dd>
+<p>
+Customize the HTTP method or the URI scheme, host, port
+or query string.
+</p>
+</dd>
+</dl></div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_value">Return value</h2>
+<div class="sectionbody">
+<div class="paragraph"><p>The atom <code>ok</code> is always returned. It can be safely ignored.</p></div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_changelog">Changelog</h2>
+<div class="sectionbody">
+<div class="ulist"><ul>
+<li>
+<p>
+<strong>2.0</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">Push a resource</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="font-weight: bold"><span style="color: #000000">cowboy_req:push</span></span>(<span style="color: #FF0000">"/static/style.css"</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">=&gt;</span> <span style="color: #990000">&lt;&lt;</span><span style="color: #FF0000">"text/css"</span><span style="color: #990000">&gt;&gt;</span>
+}, <span style="color: #009900">Req</span>),</tt></pre></div></div>
+<div class="listingblock">
+<div class="title">Push a resource with a custom host</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="font-weight: bold"><span style="color: #000000">cowboy_req:push</span></span>(<span style="color: #FF0000">"/static/style.css"</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">=&gt;</span> <span style="color: #990000">&lt;&lt;</span><span style="color: #FF0000">"text/css"</span><span style="color: #990000">&gt;&gt;</span>
+}, #{<span style="color: #0000FF">host</span> <span style="color: #990000">=&gt;</span> <span style="color: #990000">&lt;&lt;</span><span style="color: #FF0000">"cdn.example.org"</span><span style="color: #990000">&gt;&gt;</span>}, <span style="color: #009900">Req</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="../cowboy_req">cowboy_req(3)</a>,
+<a href="../cowboy_req.inform">cowboy_req:inform(3)</a>,
+<a href="../cowboy_req.reply">cowboy_req:reply(3)</a>,
+<a href="../cowboy_req.stream_reply">cowboy_req:stream_reply(3)</a></p></div>
+</div>
+</div>
+
+
+
+
+
+</div>
+
+<div class="span3 sidecol">
+
+
+<h3>
+	Cowboy
+	2.4
+	Function Reference
+	
+</h3>
+
+<ul>
+	
+		<li><a href="/docs/en/cowboy/2.4/guide">User Guide</a></li>
+	
+	
+		<li><a href="/docs/en/cowboy/2.4/manual">Function Reference</a></li>
+	
+	
+</ul>
+
+<h4 id="docs-nav">Navigation</h4>
+
+<h4>Version select</h4>
+<ul>
+	
+	
+	
+		<li><a href="/docs/en/cowboy/2.4/manual">2.4</a></li>
+	
+		<li><a href="/docs/en/cowboy/2.3/manual">2.3</a></li>
+	
+		<li><a href="/docs/en/cowboy/2.2/manual">2.2</a></li>
+	
+		<li><a href="/docs/en/cowboy/2.1/manual">2.1</a></li>
+	
+		<li><a href="/docs/en/cowboy/2.0/manual">2.0</a></li>
+	
+		<li><a href="/docs/en/cowboy/1.0/manual">1.0</a></li>
+	
+</ul>
+
+</div>
+</div>
+</div>
+</div>
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author	Loïc Hoguin <[email protected]>	2018-05-02 11:35:26 +0200
committer	Loïc Hoguin <[email protected]>	2018-05-02 11:35:26 +0200
commit	fec98300ec9af6c8b5f3120a60f217983c451076 (patch)
tree	9772977293124e8b9b5b253e44d8c2695cddfb44 /docs/en/cowboy/2.4/manual/cowboy_req.push/index.html
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