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diff --git a/src/main/java/org/traccar/notification/EventForwarder.java b/src/main/java/org/traccar/notification/EventForwarder.java
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+++ b/src/main/java/org/traccar/notification/EventForwarder.java
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+/*
+ * Copyright 2016 - 2019 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.notification;
+
+import org.traccar.Context;
+import org.traccar.model.Device;
+import org.traccar.model.Event;
+import org.traccar.model.Geofence;
+import org.traccar.model.Maintenance;
+import org.traccar.model.Position;
+
+import javax.ws.rs.client.AsyncInvoker;
+import javax.ws.rs.client.Invocation;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+
+public abstract class EventForwarder {
+
+    private final String url;
+    private final String header;
+
+    public EventForwarder() {
+        url = Context.getConfig().getString("event.forward.url", "http://localhost/");
+        header = Context.getConfig().getString("event.forward.header");
+    }
+
+    private static final String KEY_POSITION = "position";
+    private static final String KEY_EVENT = "event";
+    private static final String KEY_GEOFENCE = "geofence";
+    private static final String KEY_DEVICE = "device";
+    private static final String KEY_MAINTENANCE = "maintenance";
+    private static final String KEY_USERS = "users";
+
+    public final void forwardEvent(Event event, Position position, Set<Long> users) {
+
+        Invocation.Builder requestBuilder = Context.getClient().target(url).request();
+
+        if (header != null && !header.isEmpty()) {
+            for (String line: header.split("\\r?\\n")) {
+                String[] values = line.split(":", 2);
+                requestBuilder.header(values[0].trim(), values[1].trim());
+            }
+        }
+
+        executeRequest(event, position, users, requestBuilder.async());
+    }
+
+    protected Map<String, Object> preparePayload(Event event, Position position, Set<Long> users) {
+        Map<String, Object> data = new HashMap<>();
+        data.put(KEY_EVENT, event);
+        if (position != null) {
+            data.put(KEY_POSITION, position);
+        }
+        Device device = Context.getIdentityManager().getById(event.getDeviceId());
+        if (device != null) {
+            data.put(KEY_DEVICE, device);
+        }
+        if (event.getGeofenceId() != 0) {
+            Geofence geofence = Context.getGeofenceManager().getById(event.getGeofenceId());
+            if (geofence != null) {
+                data.put(KEY_GEOFENCE, geofence);
+            }
+        }
+        if (event.getMaintenanceId() != 0) {
+            Maintenance maintenance = Context.getMaintenancesManager().getById(event.getMaintenanceId());
+            if (maintenance != null) {
+                data.put(KEY_MAINTENANCE, maintenance);
+            }
+        }
+        data.put(KEY_USERS, Context.getUsersManager().getItems(users));
+        return data;
+    }
+
+    protected abstract void executeRequest(
+            Event event, Position position, Set<Long> users, AsyncInvoker invoker);
+
+}