code: public void listen(InetAddress localEp) throws ConfigurationException
      {
          callbacks.reset(); // hack to allow tests to stop/restart MS
          for (ServerSocket ss : getServerSockets(localEp))
          {
              SocketThread th = new SocketThread(ss, "ACCEPT-" + localEp);
              th.start();
              socketThreads.add(th);
          }
          listenGate.signalAll();
      }
docs: Listen on the specified port.
  
  @param localEp InetAddress whose port to listen on.