Add the ability to toggle filtering URL parameters passed to page providers.

conf/serve.go

@@ -4,5 +4,6 @@ type ServeYaml struct {
 	DataStorage      string            `yaml:"dataStorage"`
 	Domains          []string          `yaml:"domains"`
 	RangeSupported   bool              `yaml:"rangeSupported"`
+	FilterURLQueries bool              `yaml:"filterURLQueries"`
 	CacheSettings    CacheSettingsYaml `yaml:"cacheSettings"`
 }

config.example.yml

@@ -0,0 +1,13 @@
+listen:
+  webNetwork: "tcp4"
+  web: ":8080"
+  webMethod: "http"
+  identify: true
+serve:
+  rangeSupported: true
+  cacheSettings:
+    enableContentsCaching: true
+    enableContentsCachePurge: true
+    maxAge: 3600
+    notModifiedUsingLastModified: true
+    notModifiedUsingETags: true

pageHandler/page-handler.go

@@ -19,6 +19,7 @@ type PageHandler struct {
 	PageProviders            map[string]PageProvider
 	pageContentsCacheRWMutex *sync.RWMutex
 	RangeSupported           bool
+	FilterURLQueries         bool
 	CacheSettings            conf.CacheSettingsYaml
 }
 
@@ -40,6 +41,7 @@ func NewPageHandler(config conf.ServeYaml) *PageHandler {
 		PageProviders:            GetProviders(config.CacheSettings.EnableTemplateCaching, config.DataStorage),
 		pageContentsCacheRWMutex: theMutex,
 		RangeSupported:           config.RangeSupported,
+		FilterURLQueries:         config.FilterURLQueries,
 		CacheSettings:            config.CacheSettings,
 	}
 }
@@ -162,7 +164,10 @@ func (ph *PageHandler) GetCleanQuery(request *http.Request) (url.Values, string)
 		return make(url.Values), ""
 	}
 	supportedKeys := provider.GetSupportedURLParameters()
-	toDelete := make([]string, len(toClean))
+	var toDelete []string
+	if ph.FilterURLQueries {
+		toDelete = make([]string, len(toClean))
+	}
 	theSize := 0
 	theQuery := ""
 	for s, v := range toClean {
@@ -174,8 +179,10 @@ func (ph *PageHandler) GetCleanQuery(request *http.Request) (url.Values, string)
 			}
 		}
 		if noExist {
+			if ph.FilterURLQueries {
 				toDelete[theSize] = s
 				theSize++
+			}
 		} else {
 			for _, i := range v {
 				if i == "" {
@@ -186,9 +193,11 @@ func (ph *PageHandler) GetCleanQuery(request *http.Request) (url.Values, string)
 			}
 		}
 	}
+	if ph.FilterURLQueries {
 		for i := 0; i < theSize; i++ {
 			delete(toClean, toDelete[i])
 		}
+	}
 	return toClean, strings.TrimRight(theQuery, "&")
 }