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<section id="module-evennia.server.throttle">
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<span id="evennia-server-throttle"></span><h1>evennia.server.throttle<a class="headerlink" href="#module-evennia.server.throttle" title="Permalink to this headline">¶</a></h1>
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<dl class="py class">
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<dt id="evennia.server.throttle.Throttle">
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<em class="property">class </em><code class="sig-prename descclassname">evennia.server.throttle.</code><code class="sig-name descname">Throttle</code><span class="sig-paren">(</span><em class="sig-param"><span class="o">**</span><span class="n">kwargs</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/evennia/server/throttle.html#Throttle"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#evennia.server.throttle.Throttle" title="Permalink to this definition">¶</a></dt>
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<dd><p>Bases: <code class="xref py py-class docutils literal notranslate"><span class="pre">object</span></code></p>
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<p>Keeps a running count of failed actions per IP address.</p>
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<p>Available methods indicate whether or not the number of failures exceeds a
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particular threshold.</p>
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<p>This version of the throttle is usable by both the terminal server as well
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as the web server, imposes limits on memory consumption by using deques
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with length limits instead of open-ended lists, and removes sparse keys when
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no recent failures have been recorded.</p>
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<dl class="py attribute">
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<dt id="evennia.server.throttle.Throttle.error_msg">
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<code class="sig-name descname">error_msg</code><em class="property"> = 'Too many failed attempts; you must wait a few minutes before trying again.'</em><a class="headerlink" href="#evennia.server.throttle.Throttle.error_msg" title="Permalink to this definition">¶</a></dt>
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<dd></dd></dl>
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<dl class="py method">
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<dt id="evennia.server.throttle.Throttle.__init__">
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<code class="sig-name descname">__init__</code><span class="sig-paren">(</span><em class="sig-param"><span class="o">**</span><span class="n">kwargs</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/evennia/server/throttle.html#Throttle.__init__"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#evennia.server.throttle.Throttle.__init__" title="Permalink to this definition">¶</a></dt>
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<dd><p>Allows setting of throttle parameters.</p>
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<dl class="field-list simple">
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<dt class="field-odd">Keyword Arguments</dt>
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<dd class="field-odd"><ul class="simple">
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<li><p><strong>limit</strong> (<em>int</em>) – Max number of failures before imposing limiter</p></li>
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<li><p><strong>timeout</strong> (<em>int</em>) – number of timeout seconds after
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max number of tries has been reached.</p></li>
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<li><p><strong>cache_size</strong> (<em>int</em>) – Max number of attempts to record per IP within a
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rolling window; this is NOT the same as the limit after which
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the throttle is imposed!</p></li>
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</ul>
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</dd>
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</dl>
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</dd></dl>
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<dl class="py method">
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<dt id="evennia.server.throttle.Throttle.get">
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<code class="sig-name descname">get</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">ip</span><span class="o">=</span><span class="default_value">None</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/evennia/server/throttle.html#Throttle.get"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#evennia.server.throttle.Throttle.get" title="Permalink to this definition">¶</a></dt>
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<dd><p>Convenience function that returns the storage table, or part of.</p>
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<dl class="field-list simple">
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<dt class="field-odd">Parameters</dt>
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<dd class="field-odd"><p><strong>ip</strong> (<em>str</em><em>, </em><em>optional</em>) – IP address of requestor</p>
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</dd>
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<dt class="field-even">Returns</dt>
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<dd class="field-even"><p><p><em>storage (dict)</em> –</p>
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<dl class="simple">
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<dt>When no IP is provided, returns a dict of all</dt><dd><p>current IPs being tracked and the timestamps of their recent
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failures.</p>
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</dd>
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<dt>timestamps (deque): When an IP is provided, returns a deque of</dt><dd><p>timestamps of recent failures only for that IP.</p>
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</dd>
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</dl>
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</p>
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</dd>
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</dl>
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</dd></dl>
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<dl class="py method">
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<dt id="evennia.server.throttle.Throttle.update">
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<code class="sig-name descname">update</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">ip</span></em>, <em class="sig-param"><span class="n">failmsg</span><span class="o">=</span><span class="default_value">'Exceeded threshold.'</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/evennia/server/throttle.html#Throttle.update"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#evennia.server.throttle.Throttle.update" title="Permalink to this definition">¶</a></dt>
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<dd><p>Store the time of the latest failure.</p>
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<dl class="field-list simple">
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<dt class="field-odd">Parameters</dt>
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<dd class="field-odd"><ul class="simple">
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<li><p><strong>ip</strong> (<em>str</em>) – IP address of requestor</p></li>
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<li><p><strong>failmsg</strong> (<em>str</em><em>, </em><em>optional</em>) – Message to display in logs upon activation
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of throttle.</p></li>
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</ul>
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</dd>
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<dt class="field-even">Returns</dt>
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<dd class="field-even"><p>None</p>
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</dd>
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</dl>
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</dd></dl>
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<dl class="py method">
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<dt id="evennia.server.throttle.Throttle.check">
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<code class="sig-name descname">check</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">ip</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/evennia/server/throttle.html#Throttle.check"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#evennia.server.throttle.Throttle.check" title="Permalink to this definition">¶</a></dt>
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<dd><p>This will check the session’s address against the
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storage dictionary to check they haven’t spammed too many
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fails recently.</p>
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<dl class="field-list simple">
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<dt class="field-odd">Parameters</dt>
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<dd class="field-odd"><p><strong>ip</strong> (<em>str</em>) – IP address of requestor</p>
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</dd>
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<dt class="field-even">Returns</dt>
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<dd class="field-even"><p><p><em>throttled (bool)</em> –</p>
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<dl class="simple">
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<dt>True if throttling is active,</dt><dd><p>False otherwise.</p>
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</dd>
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