@Test
 public void test_local_port() throws Exception
 {
	final Socket s = new Socket("localhost", getInt("b_local_port"));
	s.getInputStream();
	s.getOutputStream();
	Assert.assertEquals("expected latency on this connection in ms", getLong("b_latency"), 1000);
	Assert.assertTrue(s.isConnected());
	s.close();
 }