Merge pull request #45 from nlx-lars/nlx-lars/feature/configure-header-length

FEATURE: Allow configuration of maximum varnish request header length

Author: paxuclus

Classes/Service/VarnishBanService.php

@@ -69,7 +69,7 @@ public function initializeObject()
         $this->varnishProxyClient = new ProxyClient\Varnish($varnishUrls);
         $this->varnishProxyClient->setDefaultBanHeader('X-Site', $this->tokenStorage->getToken());
         $this->cacheInvalidator = new CacheInvalidator($this->varnishProxyClient);
-        $this->tagHandler = new TagHandler($this->cacheInvalidator);
+        $this->tagHandler = new TagHandler($this->cacheInvalidator, 'X-Cache-Tags', $this->settings['maximumHeaderLength'] ?? 7500);
     }
 
     /**

Configuration/Settings.yaml

@@ -11,6 +11,10 @@ MOC:
       defaultSharedMaximumAge: null
       # Disable sending headers (useful for staging environments)
       disabled: false
+
+    # Maximum length of header in bytes for requests to varnish. Used when banning. Large requests will be split across multiple smaller ones
+    maximumHeaderLength: 7500
+
     # Port to use for reverse lookup in backend module
     reverseLookupPort: null
     # List of ignored  cache tags to skip when flushing caches by tag, e.g. 'TYPO3.Neos:Document' which is used in 'TYPO3.Neos:Menu' elements