C# NetMQPoller.RunAsync方法代码示例

        /// <summary>
        /// Create a Zyre API that communicates with a node on the ZRE bus.
        /// </summary>
        /// <param name="name">The name of the node</param>
        /// <param name="useEvents">Set this to true to disable Receive() and instead subscribe to events for getting messages from peers. Default is true.</param>
        /// <param name="loggerDelegate">An action to take for logging when _verbose is true. Default is null.</param>
        public Zyre (string name, bool useEvents = true, Action<string> loggerDelegate = null)
        {
            _useEvents = useEvents;
            // Create front-to-back pipe pair for data traffic
            // outbox is passed to ZyreNode for sending Zyre message traffic back to _inbox
            PairSocket outbox;
            PairSocket.CreateSocketPair(out outbox, out _inbox);

            // Start node engine and wait for it to be ready
            // All node control is done through _actor

            _actor = ZyreNode.Create(outbox, loggerDelegate);

            if (useEvents)
            {
                _inboxPoller = new NetMQPoller();
                _inbox.ReceiveReady += InboxReceiveReady;
                _inboxPoller.RunAsync();
            }

            // Send name, if any, to node ending
            if (!string.IsNullOrEmpty(name))
            {
                _actor.SendMoreFrame("SET NAME").SendFrame(name);
            }
        }

        public void ResponsePoll()
        {
            using (var rep = new ResponseSocket())
            using (var req = new RequestSocket())
            using (var poller = new NetMQPoller { rep })
            {
                int port = rep.BindRandomPort("tcp://127.0.0.1");

                req.Connect("tcp://127.0.0.1:" + port);

                rep.ReceiveReady += (s, e) =>
                {
                    bool more;
                    Assert.AreEqual("Hello", e.Socket.ReceiveFrameString(out more));
                    Assert.False(more);

                    e.Socket.SendFrame("World");
                };

                poller.RunAsync();

                req.SendFrame("Hello");

                bool more2;
                Assert.AreEqual("World", req.ReceiveFrameString(out more2));
                Assert.IsFalse(more2);

                poller.Stop();
            }
        }

        public void WithPoller()
        {
            using (var queue = new NetMQQueue<int>())
            using (var poller = new NetMQPoller { queue })
            {
                var manualResetEvent = new ManualResetEvent(false);

                queue.ReceiveReady += (sender, args) =>
                {
                    Assert.AreEqual(1, queue.Dequeue());
                    manualResetEvent.Set();
                };

                poller.RunAsync();

                Assert.IsFalse(manualResetEvent.WaitOne(100));
                queue.Enqueue(1);
                Assert.IsTrue(manualResetEvent.WaitOne(100));
            }
        }

        public void Monitoring()
        {
            var listeningEvent = new ManualResetEvent(false);
            var acceptedEvent = new ManualResetEvent(false);
            var connectedEvent = new ManualResetEvent(false);

            using (var rep = new ResponseSocket())
            using (var req = new RequestSocket())
            using (var poller = new NetMQPoller())
            using (var repMonitor = new NetMQMonitor(rep, "inproc://rep.inproc", SocketEvents.Accepted | SocketEvents.Listening))
            using (var reqMonitor = new NetMQMonitor(req, "inproc://req.inproc", SocketEvents.Connected))
            {
                repMonitor.Accepted += (s, e) => acceptedEvent.Set();
                repMonitor.Listening += (s, e) => listeningEvent.Set();

                repMonitor.AttachToPoller(poller);

                int port = rep.BindRandomPort("tcp://127.0.0.1");

                reqMonitor.Connected += (s, e) => connectedEvent.Set();

                reqMonitor.AttachToPoller(poller);

                poller.RunAsync();

                req.Connect("tcp://127.0.0.1:" + port);
                req.SendFrame("a");

                rep.SkipFrame();

                rep.SendFrame("b");

                req.SkipFrame();

                Assert.IsTrue(listeningEvent.WaitOne(300));
                Assert.IsTrue(connectedEvent.WaitOne(300));
                Assert.IsTrue(acceptedEvent.WaitOne(300));

                poller.Stop();
            }
        }

        public void CycleCreateTerminate()
        {
            NetMQConfig.ContextCreate(true);
            var isTerminated = VerifyTermination();
            Assert.AreEqual(false, isTerminated);

            // We use the Poller Test code.
            using (var rep = new ResponseSocket())
            using (var req = new RequestSocket())
            using (var poller = new NetMQPoller { rep })
            {
                var port = rep.BindRandomPort("tcp://127.0.0.1");

                req.Connect("tcp://127.0.0.1:" + port);

                rep.ReceiveReady += (s, e) =>
                {
                    bool more;
                    Assert.AreEqual("Hello", e.Socket.ReceiveFrameString(out more));
                    Assert.False(more);

                    e.Socket.SendFrame("World");
                };

                poller.RunAsync();

                req.SendFrame("Hello");

                bool more2;
                Assert.AreEqual("World", req.ReceiveFrameString(out more2));
                Assert.IsFalse(more2);

                poller.Stop();
            }
            NetMQConfig.ContextTerminate();
            isTerminated = VerifyTermination();
            Assert.AreEqual(true, isTerminated);
        }

        public void TestPollerDispose()
        {
            const int timerIntervalMillis = 10;

            var timer = new NetMQTimer(TimeSpan.FromMilliseconds(timerIntervalMillis));

            var signal = new ManualResetEvent(false);

            var count = 0;

            timer.Elapsed += (s, a) =>
            {
                if (count++ == 5)
                    signal.Set();
            };

            NetMQPoller poller;
            using (poller = new NetMQPoller { timer })
            {
                poller.RunAsync();
                Assert.IsTrue(signal.WaitOne(500));
                Assert.IsTrue(poller.IsRunning);
                Assert.Throws<InvalidOperationException>(() => poller.Run());
            }

            Assert.IsFalse(poller.IsRunning);
            Assert.Throws<ObjectDisposedException>(() => poller.Run());
            Assert.Throws<ObjectDisposedException>(() => poller.Stop());
            Assert.Throws<ObjectDisposedException>(() => poller.Add(timer));
            Assert.Throws<ObjectDisposedException>(() => poller.Remove(timer));
        }

        public void NativeSocket()
        {
            using (var streamServer = new StreamSocket())
            using (var socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp))
            {
                int port = streamServer.BindRandomPort("tcp://*");

                socket.Connect("127.0.0.1", port);

                var buffer = new byte[] { 1 };
                socket.Send(buffer);

                byte[] identity = streamServer.ReceiveFrameBytes();
                byte[] message = streamServer.ReceiveFrameBytes();

                Assert.AreEqual(buffer[0], message[0]);

                var socketSignal = new ManualResetEvent(false);

                using (var poller = new NetMQPoller())
                {
                    poller.Add(socket, s =>
                    {
                        socket.Receive(buffer);

                        socketSignal.Set();

                        // removing the socket
                        poller.Remove(socket);
                    });

                    poller.RunAsync();

                    // no message is waiting for the socket so it should fail
                    Assert.IsFalse(socketSignal.WaitOne(100));

                    // sending a message back to the socket
                    streamServer.SendMoreFrame(identity).SendFrame("a");

                    Assert.IsTrue(socketSignal.WaitOne(100));

                    socketSignal.Reset();

                    // sending a message back to the socket
                    streamServer.SendMoreFrame(identity).SendFrame("a");

                    // we remove the native socket so it should fail
                    Assert.IsFalse(socketSignal.WaitOne(100));

                    poller.Stop();
                }
            }
        }

        public void StoppingProxyDisengagesFunctionality()
        {
            using (var front = new RouterSocket())
            using (var back = new DealerSocket())
            {
                front.Bind("inproc://frontend");
                back.Bind("inproc://backend");

                var proxy = new Proxy(front, back);
                Task.Factory.StartNew(proxy.Start);

                // Send a message through to ensure the proxy has started
                using (var client = new RequestSocket())
                using (var server = new ResponseSocket())
                {
                    client.Connect("inproc://frontend");
                    server.Connect("inproc://backend");
                    client.SendFrame("hello");
                    Assert.AreEqual("hello", server.ReceiveFrameString());
                    server.SendFrame("reply");
                    Assert.AreEqual("reply", client.ReceiveFrameString());

                    proxy.Stop(); // blocks until stopped

                    using (var poller = new NetMQPoller { front, back })
                    {
                        poller.RunAsync();

                        client.SendFrame("anyone there?");

                        // Should no longer receive any messages
                        Assert.IsFalse(server.TrySkipFrame(TimeSpan.FromMilliseconds(50)));
                    }
                }
            }
        }

        public void ChangeTimerInterval()
        {
            int count = 0;

            const int timerIntervalMillis = 10;

            var timer = new NetMQTimer(TimeSpan.FromMilliseconds(timerIntervalMillis));

            var stopwatch = new Stopwatch();

            long length1 = 0;
            long length2 = 0;

            timer.Elapsed += (s, a) =>
            {
                count++;

                if (count == 1)
                {
                    stopwatch.Start();
                }
                else if (count == 2)
                {
                    length1 = stopwatch.ElapsedMilliseconds;

                    timer.Interval = 20;
                    stopwatch.Restart();
                }
                else if (count == 3)
                {
                    length2 = stopwatch.ElapsedMilliseconds;

                    stopwatch.Stop();

                    timer.Enable = false;
                }
            };

            using (var poller = new NetMQPoller { timer })
            {
                poller.RunAsync();

                Thread.Sleep(timerIntervalMillis * 6);

                poller.Stop();
            }

            Assert.AreEqual(3, count);

            Assert.AreEqual(10.0, length1, 2.0);
            Assert.AreEqual(20.0, length2, 2.0);
        }

        public void TwoThreads()
        {
            int count1 = 0;
            int count2 = 0;

            var allTasks = new ConcurrentBag<Task>();

            using (var poller = new NetMQPoller())
            {
                poller.RunAsync();

                Task t1 = Task.Factory.StartNew(() =>
                {
                    for (int i = 0; i < 100; i++)
                    {
                        var task = new Task(() => { count1++; });
                        allTasks.Add(task);
                        task.Start(poller);
                    }
                });

                Task t2 = Task.Factory.StartNew(() =>
                {
                    for (int i = 0; i < 100; i++)
                    {
                        var task = new Task(() => { count2++; });
                        allTasks.Add(task);
                        task.Start(poller);
                    }
                });

                t1.Wait(1000);
                t2.Wait(1000);
                Task.WaitAll(allTasks.ToArray(), 1000);

                Assert.AreEqual(100, count1);
                Assert.AreEqual(100, count2);
            }
        }

        public void AddSocketDuringWork()
        {
            using (var router1 = new RouterSocket())
            using (var router2 = new RouterSocket())
            using (var dealer1 = new DealerSocket())
            using (var dealer2 = new DealerSocket())
            using (var poller = new NetMQPoller { router1 })
            {
                int port1 = router1.BindRandomPort("tcp://127.0.0.1");
                int port2 = router2.BindRandomPort("tcp://127.0.0.1");

                dealer1.Connect("tcp://127.0.0.1:" + port1);
                dealer2.Connect("tcp://127.0.0.1:" + port2);

                bool router1Arrived = false;
                bool router2Arrived = false;

                var signal1 = new ManualResetEvent(false);
                var signal2 = new ManualResetEvent(false);

                router1.ReceiveReady += (s, e) =>
                {
                    router1.SkipFrame();
                    router1.SkipFrame();
                    router1Arrived = true;
                    poller.Add(router2);
                    signal1.Set();
                };

                router2.ReceiveReady += (s, e) =>
                {
                    router2.SkipFrame();
                    router2.SkipFrame();
                    router2Arrived = true;
                    signal2.Set();
                };

                poller.RunAsync();

                dealer1.SendFrame("1");
                Assert.IsTrue(signal1.WaitOne(300));

                dealer2.SendFrame("2");
                Assert.IsTrue(signal2.WaitOne(300));

                poller.Stop();

                Assert.IsTrue(router1Arrived);
                Assert.IsTrue(router2Arrived);
            }
        }

        public void RemoveTimer()
        {
            using (var router = new RouterSocket())
            using (var dealer = new DealerSocket())
            using (var poller = new NetMQPoller { router })
            {
                int port = router.BindRandomPort("tcp://127.0.0.1");

                dealer.Connect("tcp://127.0.0.1:" + port);

                bool timerTriggered = false;

                var timer = new NetMQTimer(TimeSpan.FromMilliseconds(100));
                timer.Elapsed += (s, a) => { timerTriggered = true; };

                // The timer will fire after 100ms
                poller.Add(timer);

                bool messageArrived = false;

                router.ReceiveReady += (s, e) =>
                {
                    router.SkipFrame();
                    router.SkipFrame();
                    messageArrived = true;
                    // Remove timer
                    poller.Remove(timer);
                };

                poller.RunAsync();

                Thread.Sleep(20);

                dealer.SendFrame("hello");

                Thread.Sleep(300);

                poller.Stop();

                Assert.IsTrue(messageArrived);
                Assert.IsFalse(timerTriggered);
            }
        }

        public void CanExecuteTaskInline()
        {
            using (var poller = new NetMQPoller())
            {
                Assert.IsFalse(poller.CanExecuteTaskInline);

                poller.RunAsync();

                Assert.IsFalse(poller.CanExecuteTaskInline);

                var task = new Task(() => Assert.IsTrue(poller.CanExecuteTaskInline));
                task.Start(poller);
                task.Wait();
            }
        }

		public void Messages_From_Router_To_Dealer_With_Subscription()
		{
			Console.Write("Test sending message from publisher(router) to subscribers (dealer).\n");

			int maxMessage = 5;
			CountdownEvent cd = new CountdownEvent(maxMessage);

			string endpoint;

			using (var publisher = new RouterSocket())
			using (var subscriber = new DealerSocket())
			using (var poller = new NetMQPoller { subscriber })
			{
				publisher.Bind("tcp://127.0.0.1:0");
				endpoint = publisher.Options.LastEndpoint;

				subscriber.Connect(endpoint);
				subscriber.ReceiveReady += (sender, e) =>
				{
					var strs = e.Socket.ReceiveMultipartStrings();
					foreach (var str in strs)
					{
						Console.WriteLine("Subscribe: " + str);
					}
					cd.Signal();
				};
				byte[] clientId = Encoding.Unicode.GetBytes("ClientIdTheIsLongerThen32BytesForSureAbsolutelySure");
				subscriber.Options.Identity = clientId;

				const string request = "Ping";

				// Work around "feature" of router/dealer: the publisher does not know the subscriber exists, until it
				// sends at least one message which makes it necessary to open the connection. I believe this is a
				// low-level feature of the TCP/IP transport.
				subscriber.SendFrame(request); // Ping.

				byte[] serverId = publisher.ReceiveFrameBytes();
				//Assert.AreEqual(request, publisher.ReceiveFrameString());

				for (int i = 0; i < maxMessage; i++)
				{
					string msg = string.Format("[message: {0}]", i);
					Console.Write("Publish: {0}\n", msg);
					publisher.SendMoreFrame(serverId).SendFrame(msg);
					//publisher.SendMoreFrame("").SendFrame(msg);
				}

				poller.RunAsync();

				if (cd.Wait(TimeSpan.FromSeconds(10)) == false) // Blocks until _countdown.Signal has been called.
				{
					Assert.Fail("Timed out, this test should complete in less than 10 seconds.");
				}
			}
		}

        public void SimpleTimer()
        {
            // TODO it is not really clear what this test is actually testing -- maybe split it into a few smaller tests

            using (var router = new RouterSocket())
            using (var dealer = new DealerSocket())
            using (var poller = new NetMQPoller { router })
            {
                int port = router.BindRandomPort("tcp://127.0.0.1");

                dealer.Connect("tcp://127.0.0.1:" + port);

                bool messageArrived = false;

                router.ReceiveReady += (s, e) =>
                {
                    Assert.IsFalse(messageArrived);
                    router.SkipFrame();
                    router.SkipFrame();
                    messageArrived = true;
                };

                bool timerTriggered = false;

                int count = 0;

                const int timerIntervalMillis = 100;

                var timer = new NetMQTimer(TimeSpan.FromMilliseconds(timerIntervalMillis));
                timer.Elapsed += (s, a) =>
                {
                    // the timer should jump before the message
                    Assert.IsFalse(messageArrived);
                    timerTriggered = true;
                    timer.Enable = false;
                    count++;
                };
                poller.Add(timer);

                poller.RunAsync();

                Thread.Sleep(150);

                dealer.SendFrame("hello");

                Thread.Sleep(300);

                poller.Stop();

                Assert.IsTrue(messageArrived);
                Assert.IsTrue(timerTriggered);
                Assert.AreEqual(1, count);
            }
        }