Пример #1
0
  /** Stops unicast and multicast receiver threads */
  void stopThreads() {
    Thread tmp;

    // 1. Stop the multicast receiver thread
    if (mcast_receiver != null) {
      if (mcast_receiver.isAlive()) {
        tmp = mcast_receiver;
        mcast_receiver = null;
        closeMulticastSocket(); // will cause the multicast thread to terminate
        tmp.interrupt();
        try {
          tmp.join(100);
        } catch (Exception e) {
        }
        tmp = null;
      }
      mcast_receiver = null;
    }

    // 2. Stop the unicast receiver thread
    if (ucast_receiver != null) {
      ucast_receiver.stop();
      ucast_receiver = null;
    }

    // 3. Stop the in_packet_handler thread
    if (incoming_packet_handler != null) {
      incoming_packet_handler.stop();
    }
  }
Пример #2
0
  /** Starts the unicast and multicast receiver threads */
  void startThreads() throws Exception {
    if (ucast_receiver == null) {
      // start the listener thread of the ucast_recv_sock
      ucast_receiver = new UcastReceiver();
      ucast_receiver.start();
      if (Trace.trace) {
        Trace.info("UDP.startThreads()", "created unicast receiver thread");
      }
    }

    if (ip_mcast) {
      if (mcast_receiver != null) {
        if (mcast_receiver.isAlive()) {
          if (Trace.trace) {
            Trace.info(
                "UDP.createThreads()",
                "did not create new multicastreceiver thread as existing "
                    + "multicast receiver thread is still running");
          }
        } else {
          mcast_receiver = null; // will be created just below...
        }
      }

      if (mcast_receiver == null) {
        mcast_receiver = new Thread(this, "UDP mcast receiver");
        mcast_receiver.setPriority(Thread.MAX_PRIORITY); // needed ????
        mcast_receiver.setDaemon(true);
        mcast_receiver.start();
      }
    }
    if (use_outgoing_packet_handler) {
      outgoing_packet_handler.start();
    }
    if (use_incoming_packet_handler) {
      incoming_packet_handler.start();
    }
  }