def buildProtocol(self, address):
        ws = ProducerConsumerWsProtocol()
        ws.factory = self

        control = HostapdControlProtocol(emit_json=False)
        reactor.connectUNIXDatagram(self.control_interface, control,
                bindAddress=control.bindAddress())

        ws.consumer = control
        control.consumer = ws

        ws.registerProducer(control, True)
        control.registerProducer(ws, True)

        return ws 

def execute(address, command):
    deferred = Deferred()
    consumer = SingleItemConsumer(deferred)

    protocol = HostapdControlProtocol(consumer, command=command)
    consumer.registerProducer(protocol, True)

    reactor.connectUNIXDatagram(address, protocol, bindAddress=protocol.bindAddress())
    return deferred 

def test_exchange(self):
        """
        Test that a datagram can be sent to and received by a server and vice
        versa.
        """
        clientaddr = self.mktemp()
        serveraddr = self.mktemp()
        sp = ServerProto()
        cp = ClientProto()
        s = reactor.listenUNIXDatagram(serveraddr, sp)
        self.addCleanup(s.stopListening)
        c = reactor.connectUNIXDatagram(serveraddr, cp, bindAddress=clientaddr)
        self.addCleanup(c.stopListening)

        d = defer.gatherResults([sp.deferredStarted, cp.deferredStarted])
        def write(ignored):
            cp.transport.write(b"hi")
            return defer.gatherResults([sp.deferredGotWhat,
                                        cp.deferredGotBack])

        def _cbTestExchange(ignored):
            self.assertEqual(b"hi", sp.gotwhat)
            self.assertEqual(clientaddr, sp.gotfrom)
            self.assertEqual(b"hi back", cp.gotback)

        d.addCallback(write)
        d.addCallback(_cbTestExchange)
        return d 

def test_exchange(self):
        """
        Test that a datagram can be sent to and received by a server and vice
        versa.
        """
        clientaddr = self.mktemp()
        serveraddr = self.mktemp()
        sp = ServerProto()
        cp = ClientProto()
        s = reactor.listenUNIXDatagram(serveraddr, sp)
        self.addCleanup(s.stopListening)
        c = reactor.connectUNIXDatagram(serveraddr, cp, bindAddress=clientaddr)
        self.addCleanup(c.stopListening)

        d = defer.gatherResults([sp.deferredStarted, cp.deferredStarted])
        def write(ignored):
            cp.transport.write(b"hi")
            return defer.gatherResults([sp.deferredGotWhat,
                                        cp.deferredGotBack])

        def _cbTestExchange(ignored):
            self.assertEqual(b"hi", sp.gotwhat)
            self.assertEqual(clientaddr, sp.gotfrom)
            self.assertEqual(b"hi back", cp.gotback)

        d.addCallback(write)
        d.addCallback(_cbTestExchange)
        return d 

def openClientMode(self, iface=''):
        try:
            self._lport = reactor.connectUNIXDatagram(iface, self)
        except Exception:
            raise error.CarrierError(sys.exc_info()[1])
        return self 

def test_exchange(self):
        """
        Test that a datagram can be sent to and received by a server and vice
        versa.
        """
        clientaddr = self.mktemp()
        serveraddr = self.mktemp()
        sp = ServerProto()
        cp = ClientProto()
        s = reactor.listenUNIXDatagram(serveraddr, sp)
        self.addCleanup(s.stopListening)
        c = reactor.connectUNIXDatagram(serveraddr, cp, bindAddress=clientaddr)
        self.addCleanup(c.stopListening)

        d = defer.gatherResults([sp.deferredStarted, cp.deferredStarted])
        def write(ignored):
            cp.transport.write("hi")
            return defer.gatherResults([sp.deferredGotWhat,
                                        cp.deferredGotBack])

        def _cbTestExchange(ignored):
            self.failUnlessEqual("hi", sp.gotwhat)
            self.failUnlessEqual(clientaddr, sp.gotfrom)
            self.failUnlessEqual("hi back", cp.gotback)

        d.addCallback(write)
        d.addCallback(_cbTestExchange)
        return d 

def testExchange(self):
        clientaddr = self.mktemp()
        serveraddr = self.mktemp()
        sp = ServerProto()
        cp = ClientProto()
        s = reactor.listenUNIXDatagram(serveraddr, sp)
        c = reactor.connectUNIXDatagram(serveraddr, cp, bindAddress = clientaddr)

        d = defer.gatherResults([sp.deferredStarted, cp.deferredStarted])
        def write(ignored):
            cp.transport.write("hi")
            return defer.gatherResults([sp.deferredGotWhat,
                                        cp.deferredGotBack])

        def cleanup(ignored):
            d1 = defer.maybeDeferred(s.stopListening)
            d1.addCallback(lambda x : os.unlink(clientaddr))
            d2 = defer.maybeDeferred(c.stopListening)
            d2.addCallback(lambda x : os.unlink(serveraddr))
            return defer.gatherResults([d1, d2])

        def _cbTestExchange(ignored):
            self.failUnlessEqual("hi", sp.gotwhat)
            self.failUnlessEqual(clientaddr, sp.gotfrom)
            self.failUnlessEqual("hi back", cp.gotback)

        d.addCallback(write)
        d.addCallback(cleanup)
        d.addCallback(_cbTestExchange)
        return d