Merge pull request #6641 from DaSourcerer/HttpCache-etag-zero-padding-removal

framework/CHANGELOG.md

@@ -12,6 +12,7 @@ Yii Framework 2 Change Log
 - Enh #6467: `ActiveForm` will scroll to the nearest visible element when the first error input is hidden (newartix)
 - Enh #6488: Support changing `yii\base\Theme::basePath` during runtime (qiangxue)
 - Chg #6427: In case of invalid route web application now throws exception with "Page not found" instead of "Invalid Route" (cebe, samdark)
+- Chg #6641: removed zero padding from ETag strings (DaSourcerer)
 
 2.0.1 December 07, 2014
 -----------------------

framework/filters/HttpCache.php

@@ -191,6 +191,6 @@ class HttpCache extends ActionFilter
      */
     protected function generateEtag($seed)
     {
-        return '"' . base64_encode(sha1($seed, true)) . '"';
+        return '"' . rtrim(base64_encode(sha1($seed, true)), '=') . '"';
     }
 }