code: @Test public void testAcceptClient() throws Exception {
    RunnableClient localClient=new RunnableClient(InetAddress.getLocalHost(),serverSocket.getLocalPort());
    Thread thread=new Thread(localClient);
    thread.start();
  synchronized (localClient) {
      int retries=200;
      while (retries-- > 0 && !localClient.isConnected()) {
        localClient.wait(10);
      }
    }
    assertTrue(localClient.isConnected());
    localClient.close();
    serverSocket.setSoTimeout(5000);
    Client client=listener.acceptClient();
    assertNotNull(client);
    client.close();
  }
  