Add Content-Type with charset to notifications sent via Push

Fixes #9922

1 files changed, 2 insertions, 0 deletions

diff --git a/server/src/main/java/com/vaadin/server/communication/PushHandler.java b/server/src/main/java/com/vaadin/server/communication/PushHandler.java
index 08e0d798bc..6591596a47 100644
--- a/server/src/main/java/com/vaadin/server/communication/PushHandler.java
+++ b/server/src/main/java/com/vaadin/server/communication/PushHandler.java
@@ -41,6 +41,7 @@ import com.vaadin.server.VaadinServletRequest;
 import com.vaadin.server.VaadinServletService;
 import com.vaadin.server.VaadinSession;
 import com.vaadin.shared.ApplicationConstants;
+import com.vaadin.shared.JsonConstants;
 import com.vaadin.shared.communication.PushMode;
 import com.vaadin.ui.UI;
 
@@ -467,6 +468,7 @@ public class PushHandler {
                         "sendNotificationAndDisconnect called for resource no longer in scope");
                 return;
             }
+            resource.getResponse().setContentType(JsonConstants.JSON_CONTENT_TYPE);
             resource.getResponse().getWriter().write(notificationJson);
             resource.resume();
         } catch (Exception e) {