наверное работает

shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/messages/Net_ReceiveIncomingMessage_Handler.java

@@ -43,8 +43,11 @@ public class Net_ReceiveIncomingMessage_Handler implements JsonMessageHandler {
             return NetExceptionResponseFactory.error(req, WireCodes.Status.BAD_REQUEST, ex.getMessage(), "Некорректный payload подтверждения");
         }
 
-        SignedMessagesCore.saveIfAbsent(entry);
-        SignedMessagesRealtime.DeliveryCounters counters = SignedMessagesRealtime.deliverToTargetSessions(entry, null);
+        boolean inserted = SignedMessagesCore.saveIfAbsent(entry);
+        SignedMessagesRealtime.DeliveryCounters counters = new SignedMessagesRealtime.DeliveryCounters();
+        if (inserted) {
+            counters = SignedMessagesRealtime.deliverToTargetSessions(entry, null);
+        }
 
         Net_ReceiveIncomingMessage_Response resp = new Net_ReceiveIncomingMessage_Response();
         resp.setOp(req.getOp());

shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/messages/Net_SendMessagePair_Handler.java

@@ -53,15 +53,19 @@ public class Net_SendMessagePair_Handler implements JsonMessageHandler {
             return NetExceptionResponseFactory.error(req, WireCodes.Status.BAD_REQUEST, ex.getMessage(), "Некорректный payload подтверждения");
         }
 
-        SignedMessagesCore.saveIfAbsent(incomingEntry);
-        SignedMessagesCore.saveIfAbsent(outgoingEntry);
+        boolean incomingInserted = SignedMessagesCore.saveIfAbsent(incomingEntry);
+        boolean outgoingInserted = SignedMessagesCore.saveIfAbsent(outgoingEntry);
 
-        SignedMessagesRealtime.DeliveryCounters inCounters =
-                SignedMessagesRealtime.deliverToTargetSessions(incomingEntry, null);
+        SignedMessagesRealtime.DeliveryCounters inCounters = new SignedMessagesRealtime.DeliveryCounters();
+        if (incomingInserted) {
+            inCounters = SignedMessagesRealtime.deliverToTargetSessions(incomingEntry, null);
+        }
 
         String excludeSessionId = outgoingEntry.getTargetLogin().equalsIgnoreCase(ctx.getLogin()) ? ctx.getSessionId() : null;
-        SignedMessagesRealtime.DeliveryCounters outCounters =
-                SignedMessagesRealtime.deliverToTargetSessions(outgoingEntry, excludeSessionId);
+        SignedMessagesRealtime.DeliveryCounters outCounters = new SignedMessagesRealtime.DeliveryCounters();
+        if (outgoingInserted) {
+            outCounters = SignedMessagesRealtime.deliverToTargetSessions(outgoingEntry, excludeSessionId);
+        }
 
         Net_SendMessagePair_Response resp = new Net_SendMessagePair_Response();
         resp.setOp(req.getOp());

shine-server-net-protocol/src/main/java/server/logic/ws_protocol/JSON/messages/SignedMessagesCore.java

@@ -83,7 +83,7 @@ final class SignedMessagesCore {
         return entry;
     }
 
-    static void saveIfAbsent(SignedMessageV2Entry entry) throws Exception {
-        SignedMessagesV2DAO.getInstance().insertIfAbsent(entry);
+    static boolean saveIfAbsent(SignedMessageV2Entry entry) throws Exception {
+        return SignedMessagesV2DAO.getInstance().insertIfAbsent(entry);
     }
 }