Refresh AVL unit locations on the map every 15 seconds

emiMobileServer/Source/Ws.DataModel.pas

@@ -50,6 +50,9 @@ implementation
 uses
   System.StrUtils, System.DateUtils;
 
+const
+  UNIT_MAP_REFRESH_INTERVAL_MS = 15000;
+
 { TWsDataModel }
 
 constructor TWsDataModel.Create(ABroadcast: TWsBroadcastProc; AIntervalMs: Integer);
@@ -77,20 +80,37 @@ begin
 end;
 
 procedure TWsDataModel.Execute;
+var
+  unitMapElapsedMs: Integer;
 begin
+  unitMapElapsedMs := 0;
+
   try
     while not TThread.CurrentThread.CheckTerminated do
     begin
       if FStopEvent.WaitFor(FIntervalMs) = wrSignaled then
         Break;
 
-      if not FDb.StartUpdateListener then
-        Continue;
+      Inc(unitMapElapsedMs, FIntervalMs);
 
-      if not FDb.ConsumeCADUpdate then
+      if not FDb.StartUpdateListener then
         Continue;
 
+      if FDb.ConsumeCADUpdate then
+      begin
         BroadcastAll;
+        unitMapElapsedMs := 0;
+      end
+      else if unitMapElapsedMs >= UNIT_MAP_REFRESH_INTERVAL_MS then
+      begin
+        try
+          FBroadcast(BuildUnitMapJson);
+        except
+          on E: Exception do
+            Logger.Log(2, 'WsDataModel UNIT_MAP refresh error: ' + E.Message);
+        end;
+        unitMapElapsedMs := 0;
+      end;
     end;
   except
     on E: Exception do

emiMobileServer/bin/emiMobileServer.ini

 [Settings]
-LogFileNum=107
+LogFileNum=109
 webClientVersion=0.9.4.3
 
 [Database]