revert [10347] which causes double requests in certain conditions, discussed in #2065, r=ahocevar

git-svn-id: http://svn.openlayers.org/trunk/openlayers@10426 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Request.js

@@ -161,8 +161,18 @@ OpenLayers.Request = {
             }
         };
         
-        request.send(config.data);
-
+        // send request (optionally with data) and return
+        // call in a timeout for asynchronous requests so the return is
+        // available before readyState == 4 for cached docs
+        if(config.async === false) {
+            request.send(config.data);
+        } else {
+            window.setTimeout(function(){
+                if (request._aborted !== true) {
+                    request.send(config.data);
+                }
+            }, 0);
+        }
         return request;
     },
     

lib/OpenLayers/Request/XMLHttpRequest.js

@@ -128,7 +128,7 @@
                 //
                 fCleanTransport(oRequest);
 // Uncomment this block if you need a fix for IE cache
-/**/
+/*
                 // BUGFIX: IE - cache issue
                 if (!oRequest._object.getResponseHeader("Date")) {
                     // Save object to cache
@@ -192,7 +192,7 @@
                     // Return now - wait until re-sent request is finished
                     return;
                 };
-/**/
+*/
                 // BUGFIX: IE - memory leak in interrupted
                 if (bIE && bAsync)
                     window.detachEvent("onunload", fOnUnload);