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  <title>Class: Rack::Deflater</title>
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    <div id="classHeader">
        <table class="header-table">
        <tr class="top-aligned-row">
          <td><strong>Class</strong></td>
          <td class="class-name-in-header">Rack::Deflater</td>
        </tr>
        <tr class="top-aligned-row">
            <td><strong>In:</strong></td>
            <td>
                <a href="../../files/lib/rack/deflater_rb.html">
                lib/rack/deflater.rb
                </a>
        <br />
            </td>
        </tr>

        <tr class="top-aligned-row">
            <td><strong>Parent:</strong></td>
            <td>
                Object
            </td>
        </tr>
        </table>
    </div>
  <!-- banner header -->

  <div id="bodyContent">



  <div id="contextContent">

    <div id="description">
      <p>
This middleware enables compression of http responses.
</p>
<p>
Currently supported compression algorithms:
</p>
<pre>
  * gzip
  * deflate
  * identity (no transformation)
</pre>
<p>
The middleware automatically detects when compression is supported and
allowed. For example no transformation is made when a cache directive of
&#8216;no-transform&#8217; is present, or when the response status code is
one that doesn&#8216;t allow an entity body.
</p>

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      <h3 class="section-bar">Methods</h3>

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      <a href="#M000250">call</a>&nbsp;&nbsp;
      <a href="#M000249">new</a>&nbsp;&nbsp;
      </div>
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    <!-- if includes -->

    <div id="section">

    <div id="class-list">
      <h3 class="section-bar">Classes and Modules</h3>

      Class <a href="Deflater/DeflateStream.html" class="link">Rack::Deflater::DeflateStream</a><br />
Class <a href="Deflater/GzipStream.html" class="link">Rack::Deflater::GzipStream</a><br />

    </div>




      


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    <div id="methods">
      <h3 class="section-bar">Public Class methods</h3>

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        <a name="M000249"></a>

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          <a href="Deflater.src/M000249.html" target="Code" class="method-signature"
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          <span class="method-name">new</span><span class="method-args">(app, options = {})</span>
          </a>
        </div>
      
        <div class="method-description">
          <p>
Creates <a href="Deflater.html">Rack::Deflater</a> middleware.
</p>
<dl>
<dt>app</dt><dd>rack app instance

</dd>
<dt>options</dt><dd>hash of deflater options, i.e. &#8216;if&#8217; - a lambda enabling /
disabling deflation based on returned boolean value

<pre>
       e.g use Rack::Deflater, :if =&gt; lambda { |env, status, headers, body| body.length &gt; 512 }
</pre>
<p>
&#8216;include&#8217; - a list of content types that should be compressed
</p>
</dd>
</dl>
        </div>
      </div>

      <h3 class="section-bar">Public Instance methods</h3>

      <div id="method-M000250" class="method-detail">
        <a name="M000250"></a>

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          <span class="method-name">call</span><span class="method-args">(env)</span>
          </a>
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        </div>
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