From 49724e51630410e9a2c99a27ec7963a315f6575e Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Tue, 29 Jun 2021 20:51:13 -0700
Subject: WebSocket connection keepalive

---
 src/main/java/org/traccar/database/ConnectionManager.java | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'src/main/java/org/traccar/database/ConnectionManager.java')

diff --git a/src/main/java/org/traccar/database/ConnectionManager.java b/src/main/java/org/traccar/database/ConnectionManager.java
index 5ff27c187..e12d44612 100644
--- a/src/main/java/org/traccar/database/ConnectionManager.java
+++ b/src/main/java/org/traccar/database/ConnectionManager.java
@@ -154,6 +154,14 @@ public class ConnectionManager {
         return result;
     }
 
+    public synchronized void sendKeepalive() {
+        for (Set<UpdateListener> userListeners : listeners.values()) {
+            for (UpdateListener listener : userListeners) {
+                listener.onKeepalive();
+            }
+        }
+    }
+
     public synchronized void updateDevice(Device device) {
         for (long userId : Context.getPermissionsManager().getDeviceUsers(device.getId())) {
             if (listeners.containsKey(userId)) {
@@ -185,6 +193,7 @@ public class ConnectionManager {
     }
 
     public interface UpdateListener {
+        void onKeepalive();
         void onUpdateDevice(Device device);
         void onUpdatePosition(Position position);
         void onUpdateEvent(Event event);
-- 
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