Merge branch 'gzip-response'

src/web/ResponseBehavior.php

@@ -34,20 +34,37 @@ public function events(): array
         ];
     }
 
-    public function afterPrepare(Event $event): void
+    public function gzip(): void
     {
-        $this->joinMultiValueHeaders();
+        $accepts = preg_split(
+            '/\s*\,\s*/',
+            Craft::$app->getRequest()->getHeaders()->get('Accept-Encoding') ?? ''
+        );
 
-        if ($this->owner->stream) {
-            $this->serveBinaryFromS3();
+        if (Collection::make($accepts)->doesntContain('gzip')) {
+            return;
         }
+
+        $this->owner->content = gzencode($this->owner->content, 9);
+        $this->owner->getHeaders()->set('Content-Encoding', 'gzip');
+    }
+
+    public function afterPrepare(Event $event): void
+    {
+        $this->joinMultiValueHeaders();
+        $this->gzip();
+        $this->serveBinaryFromS3();
     }
 
     /**
      * @throws ServerErrorHttpException
      */
     protected function serveBinaryFromS3(): void
     {
+        if (!$this->owner->stream) {
+            return;
+        }
+
         /** @var TmpFs $fs */
         $fs = Craft::createObject([
             'class' => TmpFs::class,