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<h1 class="lined-header"><span>gun:options(3)</span></h1>

<h2 id="_name">Name</h2>
<p>gun:options - Query the capabilities of the server or a resource</p>
<h2 id="_description">Description</h2>
<div class="listingblock"><div class="content"><!-- Generator: GNU source-highlight 3.1.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><b><font color="#000000">options</font></b>(<font color="#009900">ConnPid</font>, <font color="#009900">Path</font>)
    <font color="#990000">-&gt;</font> <b><font color="#000000">options</font></b>(<font color="#009900">ConnPid</font>, <font color="#009900">Path</font>, [], #{})<font color="#990000">.</font>

<b><font color="#000000">options</font></b>(<font color="#009900">ConnPid</font>, <font color="#009900">Path</font>, <font color="#009900">Headers</font>)
    <font color="#990000">-&gt;</font> <b><font color="#000000">options</font></b>(<font color="#009900">ConnPid</font>, <font color="#009900">Path</font>, <font color="#009900">Headers</font>, #{})

<b><font color="#000000">options</font></b>(<font color="#009900">ConnPid</font>, <font color="#009900">Path</font>, <font color="#009900">Headers</font>, <font color="#009900">ReqOpts</font>)
    <font color="#990000">-&gt;</font> <font color="#009900">StreamRef</font>

<font color="#009900">ConnPid</font>   <font color="#990000">::</font> <b><font color="#000080">pid</font></b>()
<font color="#009900">Path</font>      <font color="#990000">::</font> <b><font color="#000000">iodata</font></b>()
<font color="#009900">Headers</font>   <font color="#990000">::</font> [{<b><font color="#000080">binary</font></b>(), <b><font color="#000000">iodata</font></b>()}]
<font color="#009900">ReqOpts</font>   <font color="#990000">::</font> <b><font color="#000000">gun:req_opts</font></b>()
<font color="#009900">StreamRef</font> <font color="#990000">::</font> <b><font color="#000080">reference</font></b>()</tt></pre>
</div></div>
<p>Query the capabilities of the server or a resource.</p>
<p>The special path <code>&quot;*&quot;</code> can be used to obtain information about the server as a whole. Any other path will return information about that resource specifically.</p>
<h2 id="_arguments">Arguments</h2>
<dl><dt>ConnPid</dt>
<dd><p>The pid of the Gun connection process.</p>
</dd>
<dt>Path</dt>
<dd><p>Path to the resource.</p>
</dd>
<dt>Headers</dt>
<dd><p>Additional request headers.</p>
</dd>
<dt>ReqOpts</dt>
<dd><p>Request options.</p>
</dd>
</dl>
<h2 id="_return_value">Return value</h2>
<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>
<h2 id="_changelog">Changelog</h2>
<ul><li><strong>1.0</strong>: Function introduced.
</li>
</ul>
<h2 id="_examples">Examples</h2>
<div class="listingblock"><div class="title">Query the capabilities of the server</div>
<div class="content"><!-- Generator: GNU source-highlight 3.1.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><font color="#009900">StreamRef</font> <font color="#990000">=</font> <b><font color="#000000">gun:options</font></b>(<font color="#009900">ConnPid</font>, <font color="#FF0000">"*"</font>)<font color="#990000">.</font></tt></pre>
</div></div>
<div class="listingblock"><div class="title">Query the capabilities of a resource</div>
<div class="content"><!-- Generator: GNU source-highlight 3.1.9
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><font color="#009900">StreamRef</font> <font color="#990000">=</font> <b><font color="#000000">gun:options</font></b>(<font color="#009900">ConnPid</font>, <font color="#FF0000">"/articles"</font>)<font color="#990000">.</font></tt></pre>
</div></div>
<h2 id="_see_also">See also</h2>
<p><a href="../gun">gun(3)</a>, <a href="../gun.await">gun:await(3)</a>, <a href="../gun.await_body">gun:await_body(3)</a>, <a href="../gun_inform">gun_inform(3)</a>, <a href="../gun_response">gun_response(3)</a>, <a href="../gun_data">gun_data(3)</a></p>






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<h3>
	Gun
	1.1
	Function Reference
	
</h3>

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		<li><a href="/docs/en/gun/1.1/guide">User Guide</a></li>
	
	
		<li><a href="/docs/en/gun/1.1/manual">Function Reference</a></li>
	
	
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<h4 id="docs-nav">Navigation</h4>

<h4>Version select</h4>
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		<li><a href="/docs/en/gun/2.0/manual">2.0</a></li>
	
		<li><a href="/docs/en/gun/1.3/manual">1.3</a></li>
	
		<li><a href="/docs/en/gun/1.2/manual">1.2</a></li>
	
		<li><a href="/docs/en/gun/1.1/manual">1.1</a></li>
	
		<li><a href="/docs/en/gun/1.0/manual">1.0</a></li>
	
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