'Make a L{ConchTestServerFactory}, which allows us to start a
L{ConchTestServer} -- i.e. an actually listening conch.'

def _makeConchFactory(self):

    realm = self.realmFactory()
    p = portal.Portal(realm)
    p.registerChecker(conchTestPublicKeyChecker())
    factory = ConchTestServerFactory()
    factory.portal = p
    return factory
