sage: from sage.dsage.misc.misc import find_open_port
    sage: port = find_open_port().next()
    sage: dsage.server(blocking=False, port=port, verbose=False, ssl=False, log_level=3)
    Going into testing mode...
    sage: dsage.worker(blocking=False, port=port, verbose=False, ssl=False, log_level=3, poll=0.1, authenticate=False)
    sage: sleep(2.0)
    sage: d = dsage.connect(port=port, ssl=False)
    sage: sleep(2.0)
    sage: a = d('2 + 3')
    sage: a.wait(timeout=30)
    sage: a
    5