@Test
  public void testSynchronousEvents() throws Exception {
    getSystem();
    InternalClientMembership.setForceSynchronous(true);
    try {
      doTestBasicEvents();
    } finally {
      InternalClientMembership.setForceSynchronous(false);
    }
  }
test that a server times out waiting for a handshake that never arrives.
geode-core/src/distributedTest/java/org/apache/geode/cache30/ClientMembershipDUnitTest.java