1 files changed, 14 insertions, 0 deletions
diff --git a/src/main/java/de/pixart/messenger/entities/Conversation.java b/src/main/java/de/pixart/messenger/entities/Conversation.java
index 809cee166..502f2638d 100644
--- a/src/main/java/de/pixart/messenger/entities/Conversation.java
+++ b/src/main/java/de/pixart/messenger/entities/Conversation.java
@@ -897,6 +897,20 @@ public class Conversation extends AbstractEntity implements Blockable, Comparabl
         }
     }
 
+    public boolean possibleDuplicate(final String serverMsgId, final String remoteMsgId) {
+        if (serverMsgId == null || remoteMsgId == null) {
+            return false;
+        }
+        synchronized (this.messages) {
+            for (Message message : this.messages) {
+                if (serverMsgId.equals(message.getServerMsgId()) || remoteMsgId.equals(message.getRemoteMsgId())) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
     public MamReference getLastMessageTransmitted() {
         final MamReference lastClear = getLastClearHistory();
         MamReference lastReceived = new MamReference(0);