1 files changed, 5 insertions, 0 deletions
diff --git a/src/main/java/de/pixart/messenger/xmpp/stanzas/AbstractAcknowledgeableStanza.java b/src/main/java/de/pixart/messenger/xmpp/stanzas/AbstractAcknowledgeableStanza.java
index 22d035e6e..e795b40fd 100644
--- a/src/main/java/de/pixart/messenger/xmpp/stanzas/AbstractAcknowledgeableStanza.java
+++ b/src/main/java/de/pixart/messenger/xmpp/stanzas/AbstractAcknowledgeableStanza.java
@@ -1,6 +1,7 @@
 package de.pixart.messenger.xmpp.stanzas;
 
 import de.pixart.messenger.xml.Element;
+import de.pixart.messenger.xmpp.InvalidJid;
 
 abstract public class AbstractAcknowledgeableStanza extends AbstractStanza {
 
@@ -28,4 +29,8 @@ abstract public class AbstractAcknowledgeableStanza extends AbstractStanza {
         }
         return null;
     }
+
+    public boolean valid() {
+        return InvalidJid.isValid(getFrom()) && InvalidJid.isValid(getTo());
+    }
 }