def test_with_then_without():
    with get_socket() as sock:
        s1 = Service("A", sock=sock)
        s1._setup()
        s2 = Service("B", sock=sock)
        s2._setup()
        s0 = Service("", sock=sock)
        s0._setup()
def main():
    tf = Test("foo")
    tb = Test("bar")

    Service.loop()