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PORails 3.2 session cookies in cookie_store get deleted after redirect to external urls
 

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  1. PORails 3.2 session cookies in cookie_store get deleted after redirect to external urls
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    <p>We are facing a weird problem where-in few keys/cookies are getting deleted/missing from the session in our rails 3.2 app (staging environment) which has the following cache settings/configuration. The session store is cookie store and has been configured as follows:</p> <pre><code> Appsrv::Application.config.session_store :cookie_store, { :key =&gt; 'SSID', :path =&gt; '/', :domain =&gt; APP_CONFIG['site_url'].sub(/^https?:\/\//, ""), :expire_after =&gt; 30.minutes, :secret =&gt; 's23asdfe443534afdgstreggv234324we434', :secure =&gt; false # cookie not for just https } </code></pre> <p>The rails cache store is a memcache store and we use dalli gem to integrate rails and memcache. </p> <p>The following configuration has been added to different .rb files: </p> <pre><code> config.cache_store = :dalli_store, 'staging01:11211', 'staging02:11211', 'staging03:11211', 'staging04:11211' {:namespace =&gt; "appsrv", :expires_in =&gt; 86400, :compression =&gt; true} config.action_controller.perform_caching = true </code></pre> <p>The flow where this scenario of missing cookies happens is a bit complicated though. The scenario where this happens is as follows:</p> <ol> <li>User starts a session by visiting a page on Appsrv(rails 3.2 app, some variables identifying user transaction are set in session at this time)</li> <li>Goto external website for auth.</li> <li>External website redirects to a Java App server after successful auth.</li> <li>Java App server records the auth and redirects back to Appsrv. </li> <li>But after this redirection the session variables set in step 1 are gone.</li> </ol> <p>Some weird findings: Things work perfectly in the development environment where the only difference is:</p> <pre><code> config.action_controller.perform_caching = false </code></pre> <p>If we have the same setting in staging "config.action_controller.perform_caching=false" then staging also works fine. Even with "config.action_controller.perform_caching" set to false, caching actually happens properly in controllers and models.</p> <p>So the questions are: 1. Why do the session cookies get deleted when the config.action_controller.perform_caching is set to true? 2. What is the significance of config.action_controller.perform_caching configuration if setting it to false also allows cache to happen properly?</p>
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