Adding more logging lines

src/server.cpp

@@ -32,6 +32,7 @@ namespace ball_tracking {
       unique_ptr<zmqpp::socket> position_pub;
       CameraSet cams;
       high_resolution_clock::time_point start_time;
+      bool running;
 
       Impl() {
         position_pub = nullptr;
@@ -106,14 +107,18 @@ namespace ball_tracking {
           tlistener.add_listener(ID, call_back);
         }
         BOOST_LOG_TRIVIAL(debug) << "Starting all the camera listeners";
+        running = true;
         cams.start(tlistener);
       }
 
       void stop() {
+        if (running) {
+          running = false;
           BOOST_LOG_TRIVIAL(info) << "Stopping the position publisher server";
           cams.stop();
           tlistener.stop();
         }
+      }
 
       ~Impl() {
         stop();