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  <pre><span class="ruby-comment cmt"># File lib/rack/chunked.rb, line 53</span>
    <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">call</span>(<span class="ruby-identifier">env</span>)
      <span class="ruby-identifier">status</span>, <span class="ruby-identifier">headers</span>, <span class="ruby-identifier">body</span> = <span class="ruby-ivar">@app</span>.<span class="ruby-identifier">call</span>(<span class="ruby-identifier">env</span>)
      <span class="ruby-identifier">headers</span> = <span class="ruby-constant">HeaderHash</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">headers</span>)

      <span class="ruby-keyword kw">if</span> <span class="ruby-operator">!</span> <span class="ruby-identifier">chunkable_version?</span>(<span class="ruby-identifier">env</span>[<span class="ruby-value str">'HTTP_VERSION'</span>]) <span class="ruby-operator">||</span>
         <span class="ruby-constant">STATUS_WITH_NO_ENTITY_BODY</span>.<span class="ruby-identifier">include?</span>(<span class="ruby-identifier">status</span>) <span class="ruby-operator">||</span>
         <span class="ruby-identifier">headers</span>[<span class="ruby-constant">CONTENT_LENGTH</span>] <span class="ruby-operator">||</span>
         <span class="ruby-identifier">headers</span>[<span class="ruby-value str">'Transfer-Encoding'</span>]
        [<span class="ruby-identifier">status</span>, <span class="ruby-identifier">headers</span>, <span class="ruby-identifier">body</span>]
      <span class="ruby-keyword kw">else</span>
        <span class="ruby-identifier">headers</span>.<span class="ruby-identifier">delete</span>(<span class="ruby-constant">CONTENT_LENGTH</span>)
        <span class="ruby-identifier">headers</span>[<span class="ruby-value str">'Transfer-Encoding'</span>] = <span class="ruby-value str">'chunked'</span>
        [<span class="ruby-identifier">status</span>, <span class="ruby-identifier">headers</span>, <span class="ruby-constant">Body</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">body</span>)]
      <span class="ruby-keyword kw">end</span>
    <span class="ruby-keyword kw">end</span></pre>
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