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+<title>Status Directives - Configure - H2O - the optimized HTTP/2 server</title>
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+<td><a href="install.html">Install</a></td>
+<td class="selected">Configure</td>
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+<h2>
+<a href="configure.html">Configure</a> &gt;
+Status Directives
+</h2>
+
+
+<p>
+The status handler exposes the current states of the HTTP server.
+This document describes the configuration directives of the handler.
+</p>
+
+<div id="status" class="directive-head">
+<div class="directive-since">since v2.0</div>
+<h3><a href="configure/status_directives.html#status"><code>"status"</code></a></h3>
+</div>
+
+<dl class="directive-desc">
+<dt>Description:</dt>
+<dd>
+<p>
+If the argument is <code>ON</code>, the directive registers the status handler to the current path.
+
+</p>
+
+<p>
+Access to the handler should be <a href="configure/mruby.html#access-control">restricted</a>, considering the fact that the status includes the details of in-flight HTTP requests.
+The example below uses <a href="configure/basic_auth.html">Basic authentication</a>.
+</p>
+<div class="example">
+<div class="caption">Example. Exposing status with Basic authentication</div>
+<pre><code>paths:
+ /server-status:
+ mruby.handler: |
+ require &quot;htpasswd.rb&quot;
+ Htpasswd.new(&quot;/path/to/.htpasswd&quot;, &quot;status&quot;)
+ status: ON
+</code></pre>
+</div>
+
+<p>
+The information returned by the <code>/json</code> handler can be filtered out using the optional <code>show=module1,module2</code> parameter.
+There are currently three modules defined:
+<ul>
+<li><code>requests</code>: displays the requests currently in-flight.</li>
+<li><code>durations</code>: displays durations statistics for requests since server start time in seconds (returns all zeros unless <code>duration-stats</code> is <code>ON</code>).</li>
+<li><code>errors</code>: displays counters for internally generated errors.</li>
+<li><code>main</code>: displays general daemon-wide stats.</li>
+</ul>
+</p>
+
+</dd>
+<dt><a href="configure/syntax_and_structure.html#config_levels">Level</a>:</dt>
+<dd>path</dd>
+</dl>
+
+<div id="duration-stats" class="directive-head">
+<div class="directive-since">since v2.1</div>
+<h3><a href="configure/status_directives.html#duration-stats"><code>"duration-stats"</code></a></h3>
+</div>
+
+<dl class="directive-desc">
+<dt>Description:</dt>
+<dd>
+<p>
+Gather timing stats for requests.
+</p>
+
+</p>
+<p>
+If the argument is <code>ON</code>, this directive populates duration statistics in seconds, to be consumed by status handlers.
+Enabling this feature has a noticeable CPU and memory impact.
+</p>
+<p>
+Note that the time spent while processing a request in a blocking manner (such as opening a file or a mruby handler that does invoke a network operation) will not be reflected to the <code>process_time</code> element of the duration stats due to the fact that the timer being used for measuring the time spent is updated only once per loop.
+</p>
+
+</dd>
+<dt><a href="configure/syntax_and_structure.html#config_levels">Level</a>:</dt>
+<dd>global</dd>
+<dt>Default:</dt>
+<dd><code><pre>duration-stats: OFF</pre></code>
+</dl>
+
+
+
+
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