>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #2708771. --> Reported by: [wim leers](https://www.drupal.org/user/99777) >>> <h3 id="summary-problem-motivation">Problem/Motivation</h3> <p>Port:</p> <ul> <li><del><code>CDN_SEO_*</code> constants in <code>cdn.constants.inc</code></del></li> <li><del><code>cdn_boot()</code> in <code>cdn.module</code></del></li> <li><del><code>_cdn_seo_should_redirect()</code> in <code>cdn.module</code></del></li> <li><del><code>cdn_admin_other_settings_form()</code> in <code>cdn.admin.inc</code></del></li> <li><del><code>cdn_ui/help/admin-other-seo.html</code></del></li> <li><del><code>CDNSEOTestCase</code> in tests/cdn.test</del></li> </ul> <h3 id="summary-proposed-resolution">Proposed resolution</h3> <p>Should be implemented as a Stack middleware, because <code>hook_boot()</code> no longer exists in Drupal 8</p> <p><del>Eventually should be published on <a href="http://stackphp.com/">http://stackphp.com/</a>, because this is not in any way Drupal-specific. (It's basically redirecting all user agents except the whitelisted ones to the canonical domain for all HTML content.)</del></p> <h3 id="summary-remaining-tasks">Remaining tasks</h3> <h3 id="summary-ui-changes">User interface changes</h3> <h3 id="summary-api-changes">API changes</h3> <h3 id="summary-data-model-changes">Data model changes</h3> <p>Yes.</p> > Related issue: [Issue #2294613](https://www.drupal.org/node/2294613) > Related issue: [Issue #2424309](https://www.drupal.org/node/2424309) > Related issue: [Issue #2678374](https://www.drupal.org/node/2678374)