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<title>module Rack - rack-2.2.10 Documentation</title>

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  <h3>Methods</h3>

  <ul class="link-list" role="directory">
    
    <li ><a href="#method-c-release">::release</a>
    
    <li ><a href="#method-c-version">::version</a>
    
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<main role="main" aria-labelledby="module-Rack">
  <h1 id="module-Rack" class="module">
    module Rack
  </h1>

  <section class="description">
    
<p>Regexp has `match?` since Ruby 2.4 so to support Ruby &lt; 2.4 we need to define this method</p>

<p>The <a href="Rack.html"><code>Rack</code></a> main module, serving as a namespace for all core <a href="Rack.html"><code>Rack</code></a> modules and classes.</p>

<p>All modules meant for use in your application are <code>autoload</code>ed here, so it should be enough just to <code>require &#39;rack&#39;</code> in your code.</p>

  </section>

  
  <section id="5Buntitled-5D" class="documentation-section">
    

    

    
    <section class="constants-list">
      <header>
        <h3>Constants</h3>
      </header>
      <dl>
      
        <dt id="CACHE_CONTROL">CACHE_CONTROL
        
        <dd>
        
      
        <dt id="CONTENT_LENGTH">CONTENT_LENGTH
        
        <dd>
        
      
        <dt id="CONTENT_TYPE">CONTENT_TYPE
        
        <dd>
        
      
        <dt id="DELETE">DELETE
        
        <dd>
        
      
        <dt id="ETAG">ETAG
        
        <dd>
        
      
        <dt id="EXPIRES">EXPIRES
        
        <dd>
        
      
        <dt id="File">File
        
        <dd>
        
      
        <dt id="GET">GET
        
        <dd><p>HTTP method verbs</p>
        
      
        <dt id="HEAD">HEAD
        
        <dd>
        
      
        <dt id="HTTPS">HTTPS
        
        <dd>
        
      
        <dt id="HTTP_COOKIE">HTTP_COOKIE
        
        <dd>
        
      
        <dt id="HTTP_HOST">HTTP_HOST
        
        <dd>
        
      
        <dt id="HTTP_PORT">HTTP_PORT
        
        <dd>
        
      
        <dt id="HTTP_VERSION">HTTP_VERSION
        
        <dd>
        
      
        <dt id="LINK">LINK
        
        <dd>
        
      
        <dt id="OPTIONS">OPTIONS
        
        <dd>
        
      
        <dt id="PATCH">PATCH
        
        <dd>
        
      
        <dt id="PATH_INFO">PATH_INFO
        
        <dd>
        
      
        <dt id="POST">POST
        
        <dd>
        
      
        <dt id="PUT">PUT
        
        <dd>
        
      
        <dt id="QUERY_STRING">QUERY_STRING
        
        <dd>
        
      
        <dt id="RACK_ERRORS">RACK_ERRORS
        
        <dd>
        
      
        <dt id="RACK_HIJACK">RACK_HIJACK
        
        <dd>
        
      
        <dt id="RACK_HIJACK_IO">RACK_HIJACK_IO
        
        <dd>
        
      
        <dt id="RACK_INPUT">RACK_INPUT
        
        <dd>
        
      
        <dt id="RACK_IS_HIJACK">RACK_IS_HIJACK
        
        <dd>
        
      
        <dt id="RACK_LOGGER">RACK_LOGGER
        
        <dd>
        
      
        <dt id="RACK_METHODOVERRIDE_ORIGINAL_METHOD">RACK_METHODOVERRIDE_ORIGINAL_METHOD
        
        <dd>
        
      
        <dt id="RACK_MULTIPART_BUFFER_SIZE">RACK_MULTIPART_BUFFER_SIZE
        
        <dd>
        
      
        <dt id="RACK_MULTIPART_TEMPFILE_FACTORY">RACK_MULTIPART_TEMPFILE_FACTORY
        
        <dd>
        
      
        <dt id="RACK_MULTIPROCESS">RACK_MULTIPROCESS
        
        <dd>
        
      
        <dt id="RACK_MULTITHREAD">RACK_MULTITHREAD
        
        <dd>
        
      
        <dt id="RACK_RECURSIVE_INCLUDE">RACK_RECURSIVE_INCLUDE
        
        <dd>
        
      
        <dt id="RACK_REQUEST_COOKIE_HASH">RACK_REQUEST_COOKIE_HASH
        
        <dd>
        
      
        <dt id="RACK_REQUEST_COOKIE_STRING">RACK_REQUEST_COOKIE_STRING
        
        <dd>
        
      
        <dt id="RACK_REQUEST_FORM_HASH">RACK_REQUEST_FORM_HASH
        
        <dd>
        
      
        <dt id="RACK_REQUEST_FORM_INPUT">RACK_REQUEST_FORM_INPUT
        
        <dd>
        
      
        <dt id="RACK_REQUEST_FORM_VARS">RACK_REQUEST_FORM_VARS
        
        <dd>
        
      
        <dt id="RACK_REQUEST_QUERY_HASH">RACK_REQUEST_QUERY_HASH
        
        <dd>
        
      
        <dt id="RACK_REQUEST_QUERY_STRING">RACK_REQUEST_QUERY_STRING
        
        <dd>
        
      
        <dt id="RACK_RUNONCE">RACK_RUNONCE
        
        <dd>
        
      
        <dt id="RACK_SESSION">RACK_SESSION
        
        <dd>
        
      
        <dt id="RACK_SESSION_OPTIONS">RACK_SESSION_OPTIONS
        
        <dd>
        
      
        <dt id="RACK_SESSION_UNPACKED_COOKIE_DATA">RACK_SESSION_UNPACKED_COOKIE_DATA
        
        <dd>
        
      
        <dt id="RACK_SHOWSTATUS_DETAIL">RACK_SHOWSTATUS_DETAIL
        
        <dd>
        
      
        <dt id="RACK_TEMPFILES">RACK_TEMPFILES
        
        <dd>
        
      
        <dt id="RACK_URL_SCHEME">RACK_URL_SCHEME
        
        <dd>
        
      
        <dt id="RACK_VERSION">RACK_VERSION
        
        <dd><p><a href="Rack.html"><code>Rack</code></a> environment variables</p>
        
      
        <dt id="RELEASE">RELEASE
        
        <dd>
        
      
        <dt id="REQUEST_METHOD">REQUEST_METHOD
        
        <dd>
        
      
        <dt id="REQUEST_PATH">REQUEST_PATH
        
        <dd>
        
      
        <dt id="SCRIPT_NAME">SCRIPT_NAME
        
        <dd>
        
      
        <dt id="SERVER_NAME">SERVER_NAME
        
        <dd>
        
      
        <dt id="SERVER_PORT">SERVER_PORT
        
        <dd>
        
      
        <dt id="SERVER_PROTOCOL">SERVER_PROTOCOL
        
        <dd>
        
      
        <dt id="SET_COOKIE">SET_COOKIE
        
        <dd>
        
      
        <dt id="TRACE">TRACE
        
        <dd>
        
      
        <dt id="TRANSFER_ENCODING">TRANSFER_ENCODING
        
        <dd>
        
      
        <dt id="UNLINK">UNLINK
        
        <dd>
        
      
        <dt id="VERSION">VERSION
        
        <dd><p>The <a href="Rack.html"><code>Rack</code></a> protocol version number implemented.</p>
        
      
      </dl>
    </section>
    

    

    
     <section id="public-class-5Buntitled-5D-method-details" class="method-section">
       <header>
         <h3>Public Class Methods</h3>
       </header>

    
      <div id="method-c-release" class="method-detail ">
        
        <div class="method-heading">
          <span class="method-name">release</span><span
            class="method-args">()</span>
          
          <span class="method-click-advice">click to toggle source</span>
          
        </div>
        

        <div class="method-description">
          
          <p>Return the <a href="Rack.html"><code>Rack</code></a> release as a dotted string.</p>
          
          

          
          <div class="method-source-code" id="release-source">
            <pre><span class="ruby-comment"># File lib/rack/version.rb, line 26</span>
<span class="ruby-keyword">def</span> <span class="ruby-keyword">self</span>.<span class="ruby-identifier ruby-title">release</span>
  <span class="ruby-constant">RELEASE</span>
<span class="ruby-keyword">end</span></pre>
          </div>
          
        </div>

        

        
      </div>

    
      <div id="method-c-version" class="method-detail ">
        
        <div class="method-heading">
          <span class="method-name">version</span><span
            class="method-args">()</span>
          
          <span class="method-click-advice">click to toggle source</span>
          
        </div>
        

        <div class="method-description">
          
          <p>Return the <a href="Rack.html"><code>Rack</code></a> protocol version as a dotted string.</p>
          
          

          
          <div class="method-source-code" id="version-source">
            <pre><span class="ruby-comment"># File lib/rack/version.rb, line 19</span>
<span class="ruby-keyword">def</span> <span class="ruby-keyword">self</span>.<span class="ruby-identifier ruby-title">version</span>
  <span class="ruby-constant">VERSION</span>.<span class="ruby-identifier">join</span>(<span class="ruby-string">&quot;.&quot;</span>)
<span class="ruby-keyword">end</span></pre>
          </div>
          
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