From c32e2646afa9d7b69a95e1b661cb2d9497bc046c Mon Sep 17 00:00:00 2001
From: Raimund Renkert <raimund.renkert@intevation.de>
Date: Wed, 4 Mar 2015 11:05:36 +0100
Subject: [PATCH] Check the browsers websocket support and added flag to turn
 websocket on/off.

---
 cmd/mtwebmapper/web/index.html | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/cmd/mtwebmapper/web/index.html b/cmd/mtwebmapper/web/index.html
index debdfc1..19b02d8 100644
--- a/cmd/mtwebmapper/web/index.html
+++ b/cmd/mtwebmapper/web/index.html
@@ -41,6 +41,7 @@
     <script type="text/javascript" src="js/leaflet-hash.js"></script>
     <script>
 
+var useWebsocket = false; // Set to true if you want websocket support
 
 L.Projection.NoWrap = {
     project: function (latlng) {
@@ -95,14 +96,16 @@ L.control.coordinates({
 }).addTo(map);
 
 var manualUpdateControl;
-L.autoUpdate('autoUpdate', function(pressed) {
-    if (pressed) {
-        manualUpdateControl.getContainer().style = 'visibility: hidden';
-    }
-    else {
-        manualUpdateControl.getContainer().style = 'visibility: visible';
-    }
-});
+if (window.WebSocket && useWebsocket) {
+    L.autoUpdate('autoUpdate', function(pressed) {
+        if (pressed) {
+            manualUpdateControl.getContainer().style = 'visibility: hidden';
+        }
+        else {
+            manualUpdateControl.getContainer().style = 'visibility: visible';
+        }
+    });
+}
 var layersControl = new L.Control.Layers(rasterMaps, overlayMaps, {collapsed: false});
 map.addControl(layersControl);