3 files changed, 22 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/broadcast/BroadcastInterface.java b/src/main/java/org/traccar/broadcast/BroadcastInterface.java
index dddba68b6..673ebd8b8 100644
--- a/src/main/java/org/traccar/broadcast/BroadcastInterface.java
+++ b/src/main/java/org/traccar/broadcast/BroadcastInterface.java
@@ -31,6 +31,9 @@ public interface BroadcastInterface {
     default void updateEvent(boolean local, long userId, Event event) {
     }
 
+    default void updateCommand(boolean local, long deviceId) {
+    }
+
     default void invalidateObject(boolean local, Class<? extends BaseModel> clazz, long id) {
     }
 
diff --git a/src/main/java/org/traccar/broadcast/BroadcastMessage.java b/src/main/java/org/traccar/broadcast/BroadcastMessage.java
index 3e22be7e0..985848d04 100644
--- a/src/main/java/org/traccar/broadcast/BroadcastMessage.java
+++ b/src/main/java/org/traccar/broadcast/BroadcastMessage.java
@@ -63,6 +63,16 @@ public class BroadcastMessage {
         this.event = event;
     }
 
+    private Long commandDeviceId;
+
+    public Long getCommandDeviceId() {
+        return commandDeviceId;
+    }
+
+    public void setCommandDeviceId(Long commandDeviceId) {
+        this.commandDeviceId = commandDeviceId;
+    }
+
     private Map<String, Long> changes;
 
     public Map<String, Long> getChanges() {
diff --git a/src/main/java/org/traccar/broadcast/MulticastBroadcastService.java b/src/main/java/org/traccar/broadcast/MulticastBroadcastService.java
index be65b7826..b1b66f1e3 100644
--- a/src/main/java/org/traccar/broadcast/MulticastBroadcastService.java
+++ b/src/main/java/org/traccar/broadcast/MulticastBroadcastService.java
@@ -103,6 +103,13 @@ public class MulticastBroadcastService implements BroadcastService {
     }
 
     @Override
+    public void updateCommand(boolean local, long deviceId) {
+        BroadcastMessage message = new BroadcastMessage();
+        message.setCommandDeviceId(deviceId);
+        sendMessage(message);
+    }
+
+    @Override
     public void invalidateObject(boolean local, Class<? extends BaseModel> clazz, long id) {
         BroadcastMessage message = new BroadcastMessage();
         message.setChanges(Map.of(Permission.getKey(clazz), id));
@@ -136,6 +143,8 @@ public class MulticastBroadcastService implements BroadcastService {
             listeners.forEach(listener -> listener.updatePosition(false, message.getPosition()));
         } else if (message.getUserId() != null && message.getEvent() != null) {
             listeners.forEach(listener -> listener.updateEvent(false, message.getUserId(), message.getEvent()));
+        } else if (message.getCommandDeviceId() != null) {
+            listeners.forEach(listener -> listener.updateCommand(false, message.getCommandDeviceId()));
         } else if (message.getChanges() != null) {
             var iterator = message.getChanges().entrySet().iterator();
             if (iterator.hasNext()) {