Ensure the browser does not cache UIDL responses (#9732)

svn changeset:24575/svn branch:6.8

Conflicts:

	src/com/vaadin/terminal/gwt/server/CommunicationManager.java

Change-Id: I64a1a8300ab1d96e7a9b22c5ed53398cf0dd3f74

diff --git a/server/src/com/vaadin/server/VaadinServlet.java b/server/src/com/vaadin/server/VaadinServlet.java
index 9d1d79d8b17e7cf6cf881f3cb52d9bf5c0f63d25..06200352743b5f30232be5af6d01cb6b2624d056 100644 (file)
--- a/server/src/com/vaadin/server/VaadinServlet.java
+++ b/server/src/com/vaadin/server/VaadinServlet.java
@@ -288,6 +288,11 @@ public class VaadinServlet extends HttpServlet implements Constants {
                 // Handles AJAX UIDL requests
                 communicationManager.handleUidlRequest(request, response,
                         servletWrapper, uI);
+
+                // Ensure that the browser does not cache UIDL responses.
+                // iOS 6 Safari requires this (#9732)
+                response.setHeader("Cache-Control", "no-cache");
+
                 return;
             } else if (requestType == RequestType.BROWSER_DETAILS) {
                 // Browser details - not related to a specific UI