OwlCyberSecurity - MANAGER
Edit File: ETag.html
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<h1 class="class">Rack::ETag</h1> <div id="description" class="description"> <p>Automatically sets the <a href="ETag.html">ETag</a> header on all String bodies.</p> <p>The <a href="ETag.html">ETag</a> header is skipped if <a href="ETag.html">ETag</a> or Last-Modified headers are sent or if a sendfile body (body.responds_to :to_path) is given (since such cases should be handled by apache/nginx).</p> <p>On initialization, you can pass two parameters: a Cache-Control directive used when Etag is absent and a directive when it is present. The first defaults to nil, while the second defaults to "max-age=0, private, must-revalidate"</p> </div><!-- description --> <div id="5Buntitled-5D" class="documentation-section"> <!-- Constants --> <div id="constants-list" class="section"> <h3 class="section-header">Constants</h3> <dl> <dt><a name="DEFAULT_CACHE_CONTROL">DEFAULT_CACHE_CONTROL</a></dt> <dd class="description"></dd> <dt><a name="ETAG_STRING">ETAG_STRING</a></dt> <dd class="description"></dd> </dl> </div> <!-- Methods --> <div id="public-class-method-details" class="method-section section"> <h3 class="section-header">Public Class Methods</h3> <div id="new-method" class="method-detail "> <a name="method-c-new"></a> <div class="method-heading"> <span class="method-name">new</span><span class="method-args">(app, no_cache_control = nil, cache_control = DEFAULT_CACHE_CONTROL)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="new-source"> <pre> <span class="ruby-comment"># File lib/rack/etag.rb, line 17</span> <span class="ruby-keyword">def</span> <span class="ruby-identifier">initialize</span>(<span class="ruby-identifier">app</span>, <span class="ruby-identifier">no_cache_control</span> = <span class="ruby-keyword">nil</span>, <span class="ruby-identifier">cache_control</span> = <span class="ruby-constant">DEFAULT_CACHE_CONTROL</span>) <span class="ruby-ivar">@app</span> = <span class="ruby-identifier">app</span> <span class="ruby-ivar">@cache_control</span> = <span class="ruby-identifier">cache_control</span> <span class="ruby-ivar">@no_cache_control</span> = <span class="ruby-identifier">no_cache_control</span> <span class="ruby-keyword">end</span></pre> </div><!-- new-source --> </div> </div><!-- new-method --> </div><!-- public-class-method-details --> <div id="public-instance-method-details" class="method-section section"> <h3 class="section-header">Public Instance Methods</h3> <div id="call-method" class="method-detail "> <a name="method-i-call"></a> <div class="method-heading"> <span class="method-name">call</span><span class="method-args">(env)</span> <span class="method-click-advice">click to toggle source</span> </div> <div class="method-description"> <div class="method-source-code" id="call-source"> <pre> <span class="ruby-comment"># File lib/rack/etag.rb, line 23</span> <span class="ruby-keyword">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-keyword">if</span> <span class="ruby-identifier">etag_status?</span>(<span class="ruby-identifier">status</span>) <span class="ruby-operator">&&</span> <span class="ruby-identifier">etag_body?</span>(<span class="ruby-identifier">body</span>) <span class="ruby-operator">&&</span> <span class="ruby-operator">!</span><span class="ruby-identifier">skip_caching?</span>(<span class="ruby-identifier">headers</span>) <span class="ruby-identifier">original_body</span> = <span class="ruby-identifier">body</span> <span class="ruby-identifier">digest</span>, <span class="ruby-identifier">new_body</span> = <span class="ruby-identifier">digest_body</span>(<span class="ruby-identifier">body</span>) <span class="ruby-identifier">body</span> = <span class="ruby-constant">Rack</span><span class="ruby-operator">::</span><span class="ruby-constant">BodyProxy</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">new_body</span>) <span class="ruby-keyword">do</span> <span class="ruby-identifier">original_body</span>.<span class="ruby-identifier">close</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">original_body</span>.<span class="ruby-identifier">respond_to?</span>(<span class="ruby-value">:close</span>) <span class="ruby-keyword">end</span> <span class="ruby-identifier">headers</span>[<span class="ruby-constant">ETAG_STRING</span>] = <span class="ruby-node">%(W/"#{digest}")</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">digest</span> <span class="ruby-keyword">end</span> <span class="ruby-keyword">unless</span> <span class="ruby-identifier">headers</span>[<span class="ruby-constant">CACHE_CONTROL</span>] <span class="ruby-keyword">if</span> <span class="ruby-identifier">digest</span> <span class="ruby-identifier">headers</span>[<span class="ruby-constant">CACHE_CONTROL</span>] = <span class="ruby-ivar">@cache_control</span> <span class="ruby-keyword">if</span> <span class="ruby-ivar">@cache_control</span> <span class="ruby-keyword">else</span> <span class="ruby-identifier">headers</span>[<span class="ruby-constant">CACHE_CONTROL</span>] = <span class="ruby-ivar">@no_cache_control</span> <span class="ruby-keyword">if</span> <span class="ruby-ivar">@no_cache_control</span> <span class="ruby-keyword">end</span> <span class="ruby-keyword">end</span> [<span class="ruby-identifier">status</span>, <span class="ruby-identifier">headers</span>, <span class="ruby-identifier">body</span>] <span class="ruby-keyword">end</span></pre> </div><!-- call-source --> </div> </div><!-- call-method --> </div><!-- public-instance-method-details --> </div><!-- 5Buntitled-5D --> </div><!-- documentation --> <div id="validator-badges"> <p><small><a href="http://validator.w3.org/check/referer">[Validate]</a></small></p> <p><small>Generated with the <a href="http://deveiate.org/projects/Darkfish-Rdoc/">Darkfish Rdoc Generator</a> 2</small>.</p> </div> </body> </html>