managable.py

import multiprocessing

import twisted.web.http
import twisted.internet


def run_mock(q):
    factory = twisted.web.http.HTTPFactory()
    port = twisted.internet.reactor.listenTCP(0, factory)

    def report_host():
        httpHost = port.getHost()
        address = "http://%s:%d" % (httpHost.host, httpHost.port)
        q.put(address)

    twisted.internet.reactor.callWhenRunning(report_host)
    twisted.internet.reactor.run()


def main():
    q = multiprocessing.Queue()
    p = multiprocessing.Process(target=run_mock, args=(q, ))
    p.start()
    address = q.get()
    print('Serve on %s' % (address, ))
    p.join()
    q.close()


if __name__ == "__main__":
    main()