public void TopicPubSub()
{
using (var pub = new XPublisherSocket())
using (var sub = new XSubscriberSocket())
{
var port = pub.BindRandomPort("tcp://127.0.0.1");
sub.Connect("tcp://127.0.0.1:" + port);
sub.SendFrame(new byte[] { 1, (byte)'A' });
// let the subscriber connect to the publisher before sending a message
Thread.Sleep(500);
var msg = pub.ReceiveFrameBytes();
Assert.AreEqual(2, msg.Length);
Assert.AreEqual(1, msg[0]);
Assert.AreEqual('A', msg[1]);
pub.SendMoreFrame("A");
pub.SendFrame("Hello");
bool more;
Assert.AreEqual("A", sub.ReceiveFrameString(out more));
Assert.IsTrue(more);
Assert.AreEqual("Hello", sub.ReceiveFrameString(out more));
Assert.False(more);
}
}
public void Start()
{
ManualResetEvent mre = new ManualResetEvent(false);
// NetMQ.Bind to Publish and Subscribe addresses
Task.Factory.StartNew(() =>
{
using (_toSocket = new XPublisherSocket())
using (_fromSocket = new XSubscriberSocket())
{
_toSocket.Bind(_toAddress);
_fromSocket.Bind(_fromAddress);
_proxy = new Proxy(_fromSocket, _toSocket);
mre.Set();
// This method is blocking, so important to set the ManualResetEvent before this.
_proxy.Start();
}
});
// Wait until the message host is actually started before returning
mre.WaitOne(-1);
}
public void MultipleSubscribers()
{
using (var pub = new XPublisherSocket())
using (var sub = new XSubscriberSocket())
using (var sub2 = new XSubscriberSocket())
{
var port = pub.BindRandomPort("tcp://127.0.0.1");
sub.Connect("tcp://127.0.0.1:" + port);
sub.SendFrame(new byte[] { 1, (byte)'A' });
sub.SendFrame(new byte[] { 1, (byte)'A', (byte)'B' });
sub.SendFrame(new byte[] { 1, (byte)'B' });
sub.SendFrame(new byte[] { 1, (byte)'C' });
sub2.Connect("tcp://127.0.0.1:" + port);
sub2.SendFrame(new byte[] { 1, (byte)'A' });
sub2.SendFrame(new byte[] { 1, (byte)'A', (byte)'B' });
sub2.SendFrame(new byte[] { 1, (byte)'C' });
Thread.Sleep(500);
pub.SendMoreFrame("AB");
pub.SendFrame("1");
Assert.AreEqual("AB", sub.ReceiveMultipartStrings().First(), "First subscriber is expected to receive the message");
Assert.AreEqual("AB", sub2.ReceiveMultipartStrings().First(), "Second subscriber is expected to receive the message");
}
}
protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
try
{
_logger.LogInformation("XPub/XSub starting...");
using var _publisher = new XPublisherSocket($"@tcp://127.0.0.1:4444");
_logger.LogInformation($"XPub at 127.0.0.1:4444.");
using var _subscriber = new XSubscriberSocket($"@tcp://127.0.0.1:5555");
_logger.LogInformation($"XSub at 127.0.0.1:5555.");
var proxy = new Proxy(_subscriber, _publisher);
var t = Task.Factory.StartNew(_ => {
try
{
proxy.Start();
}
catch (Exception e)
{
_logger.LogError(e, "ERROR in Proxy Task");
}
}, TaskCreationOptions.LongRunning);
await Task.Delay(-1, stoppingToken).ContinueWith(_ => { });
proxy.Stop();
await t; // to avoid proxy accessing disposed objects
}
catch (Exception e)
{
_logger.LogError(e, "ERROR in Worker");
}
finally
{
_logger.LogInformation("XPub/XSub terminating");
}
}
public void Unsubscribe()
{
using (var pub = new XPublisherSocket())
using (var sub = new XSubscriberSocket())
{
var port = pub.BindRandomPort("tcp://127.0.0.1");
sub.Connect("tcp://127.0.0.1:" + port);
sub.SendFrame(new byte[] { 1, (byte)'A' });
// let the subscriber connect to the publisher before sending a message
Thread.Sleep(500);
pub.SendMoreFrame("A");
pub.SendFrame("Hello");
bool more;
Assert.AreEqual("A", sub.ReceiveFrameString(out more));
Assert.IsTrue(more);
Assert.AreEqual("Hello", sub.ReceiveFrameString(out more));
Assert.False(more);
sub.SendFrame(new byte[] { 0, (byte)'A' });
Thread.Sleep(500);
pub.SendMoreFrame("A");
pub.SendFrame("Hello");
string str;
Assert.IsFalse(sub.TryReceiveFrameString(out str));
}
}
public void MultipleSubscriptions()
{
using (var pub = new XPublisherSocket())
using (var sub = new XSubscriberSocket())
{
var port = pub.BindRandomPort("tcp://127.0.0.1");
sub.Connect("tcp://127.0.0.1:" + port);
sub.SendFrame(new byte[] { 1, (byte)'C' });
sub.SendFrame(new byte[] { 1, (byte)'B' });
sub.SendFrame(new byte[] { 1, (byte)'A' });
sub.SendFrame(new byte[] { 1, (byte)'D' });
sub.SendFrame(new byte[] { 1, (byte)'E' });
Thread.Sleep(500);
sub.SendFrame(new byte[] { 0, (byte)'C' });
sub.SendFrame(new byte[] { 0, (byte)'B' });
sub.SendFrame(new byte[] { 0, (byte)'A' });
sub.SendFrame(new byte[] { 0, (byte)'D' });
sub.SendFrame(new byte[] { 0, (byte)'E' });
Thread.Sleep(500);
}
}
private void ProxyThread()
{
if (_disposeCount != 0)
{
_traces.Debug("IpcEventProxy: disposed before start.");
return;
}
XSubscriberSocket xsub = null;
XPublisherSocket xpub = null;
try
{
xsub = _context.CreateXSubscriberSocket();
xpub = _context.CreateXPublisherSocket();
xsub.Bind(_xSubscriberAddress);
xpub.Bind(_xPublisherAddress);
var xproxy = new Proxy(xpub, xsub, null);
_traces.Debug("IpcEventProxy: started (pub->xsub {0} <=> {1} xpub<-sub)", _xSubscriberAddress, _xPublisherAddress);
xproxy.Start();
_traces.Debug("IpcEventProxy: stopped.");
}
catch (NetMQException ex)
{
if (_disposeCount == 0 && !(ex is TerminatingException))
{
_isFaultedState = true;
_traces.Error(ex, "Error while IpcEventProxy starting or during operation.");
var handler = FaultedState;
if (handler != null)
{
try
{
handler(this, EventArgs.Empty);
}
catch (Exception ex2)
{
_traces.Error(ex2);
}
}
}
}
finally
{
if (xsub != null)
{
_traces.CaptureMqExceptions(xsub.Dispose);
}
if (xpub != null)
{
_traces.CaptureMqExceptions(xpub.Dispose);
}
}
}
private static void Intermediary()
{
using var xpubSocket = new XPublisherSocket("@tcp://localhost:1234");
using var xsubSocket = new XSubscriberSocket("@tcp://127.0.0.1:5678");
Console.WriteLine("Intermediary started, and waiting for messages");
// proxy messages between frontend / backend
var proxy = new Proxy(xsubSocket, xpubSocket);
// blocks indefinitely
proxy.Start();
}
public IMessageBroker Startup()
{
if (IsStarted)
{
return(this);
}
var cancellationTokenSource = _cancellationTokenSource = new CancellationTokenSource();
_proxyTask = Task.Run(() =>
{
var address = _configuration.GetAddress();
var pubAddress = $"@{_configuration.Schema}://{address}:{_configuration.XPubPort}";
var subAddress = $"@{_configuration.Schema}://{address}:{_configuration.XSubPort}";
#if DEBUG
System.Diagnostics.Debug.WriteLine($"[{nameof( MessageBroker )}]XPub listening on: {pubAddress}");
System.Diagnostics.Debug.WriteLine($"[{nameof( MessageBroker )}]XSub listening on: {subAddress}");
#endif
using (var xpubSocket = new XPublisherSocket(pubAddress))
using (var xsubSocket = new XSubscriberSocket(subAddress))
using (var controlIn = new DealerSocket("@inproc://control-in"))
using (var controlOut = new DealerSocket("@inproc://control-out"))
using (var controlInRecv = new DealerSocket(">inproc://control-in"))
using (var controlOutRecv = new DealerSocket(">inproc://control-out"))
{
Task.Run(() =>
{
while (!cancellationTokenSource.IsCancellationRequested)
{
try
{
var topic = controlInRecv.ReceiveFrameString();
var timestamp_bytes = controlInRecv.ReceiveFrameBytes();
var timestamp_int64 = BitConverter.ToInt64(timestamp_bytes, 0);
var timestamp = new DateTimeOffset(timestamp_int64, TimeSpan.FromMinutes(0));
var message = controlInRecv.ReceiveFrameString();
var wrapper = new MessageWrapper(topic, message, timestamp);
Logger?.LogReceive(wrapper);
}
catch (System.ObjectDisposedException)
{
return;
}
}
}, cancellationTokenSource.Token);
//proxy messages between frontend / backend
var proxy = _proxy = new Proxy(xsubSocket, xpubSocket, controlIn, controlOut);
//WARNING:blocks indefinitely.
proxy.Start();
}
}, cancellationTokenSource.Token);
return(this);
}
public void Run()
{
using (var xPubSocket = new XPublisherSocket("@" + Addresses.BuildFullAddress(Addresses.TCPLocalHost, Addresses.PublisherPort)))
using (var xSubSocket = new XSubscriberSocket("@" + Addresses.BuildFullAddress(Addresses.TCPLocalHost, Addresses.SubscriberPort)))
{
Console.WriteLine("Intermediary broker started, and waiting for messages");
// proxy messages between frontend / backend
var proxy = new Proxy(xPubSocket, xSubSocket);
// blocks indefinitely
proxy.Start();
}
}
public IntermediarySocket(IAddressBinder frontendAddressBinder, IAddressBinder backendAddressBinder,
XSubscriberSocket frontendSocket, XPublisherSocket backendSocket)
{
_frontendAddressBinder = frontendAddressBinder;
_backendAddressBinder = backendAddressBinder;
_frontendSocket = frontendSocket;
_backendSocket = backendSocket;
_frontendAddressBinder.ConnectOrBindAddress(_frontendSocket);
_backendAddressBinder.ConnectOrBindAddress(_backendSocket);
_poller = new Poller(_frontendSocket, _backendSocket);
_proxy = new Proxy(frontendSocket, backendSocket, poller: _poller);
}
public void ThroughXPubXSubWithReconnectingPublisher()
{
using (var xpub = new XPublisherSocket())
using (var xsub = new XSubscriberSocket())
using (var poller = new NetMQPoller {
xsub, xpub
})
{
var xPubPort = (ushort)xpub.BindRandomPort("tcp://*");
var xSubPort = (ushort)xsub.BindRandomPort("tcp://*");
var proxy = new Proxy(xsub, xpub, poller: poller);
proxy.Start();
poller.RunAsync();
// long running subscriber
using (var sub = new SubscriberSocket())
{
sub.Connect(string.Format("tcp://localhost:{0}", xPubPort));
sub.Subscribe("A");
// publisher 1
using (var pub = new PublisherSocket())
{
pub.Connect(string.Format("tcp://localhost:{0}", xSubPort));
// give the publisher a chance to learn of the subscription
Thread.Sleep(100);
pub.SendMoreFrame("A").SendFrame("1");
}
// publisher 2
using (var pub = new PublisherSocket())
{
pub.Connect(string.Format("tcp://localhost:{0}", xSubPort));
// give the publisher a chance to learn of the subscription
Thread.Sleep(100);
pub.SendMoreFrame("A").SendFrame("2");
}
var frames = new List <string>();
Assert.True(sub.TryReceiveMultipartStrings(TimeSpan.FromSeconds(1), ref frames));
CollectionAssert.AreEqual(new[] { "A", "1" }, frames);
Assert.True(sub.TryReceiveMultipartStrings(TimeSpan.FromSeconds(1), ref frames));
CollectionAssert.AreEqual(new[] { "A", "2" }, frames);
}
}
}
public static void Main(string[] args)
{
using (var xsubSocket = new XSubscriberSocket("@tcp://*:1234"))
using (var xpubSocket = new XPublisherSocket("@tcp://*:5678"))
{
Console.WriteLine("Intermediary started, and waiting for messages");
// proxy messages between frontend / backend
var proxy = new NetMQ.Proxy(xsubSocket, xpubSocket);
// blocks indefinitely
proxy.Start();
}
}
/// <summary>
/// 初始化PubSubServer。启动一个Task运行
/// </summary>
/// <param name="addr">服务地址。可以运行在不同的PC上进行消息的收发</param>
/// <param name="publiserPort">pub server port。订阅者连接到这个端口</param>
/// <param name="subscribePort">sub server port。发布者连接到这个端口</param>
public void InitServer(int publiserPort, int subscribePort, string addr = "127.0.0.1")
{
if (HadInited)
{
return;
}
_pubSocket = new XPublisherSocket($"@tcp://{addr}:{publiserPort}");
_subSocket = new XSubscriberSocket($"@tcp://{addr}:{subscribePort}");
_proxy = new Proxy(_subSocket, _pubSocket);
Task.Factory.StartNew(_proxy.Start);
HadInited = true;
}
static void Intermediary()
{
var a2 = $"{address}:55507";
var a3 = $"{address}:55508";
using (var xpubSocket = new XPublisherSocket(a3))
using (var xsubSocket = new XSubscriberSocket(a2))
{
Console.WriteLine("Intermediary started, and waiting for messages");
// proxy messages between frontend / backend
var proxy = new Proxy(xsubSocket, xpubSocket);
// blocks indefinitely
proxy.Start();
}
}
private void Work()
{
using (var subscriberSocket = new XSubscriberSocket())
{
subscriberSocket.Bind(_toPublisherEndpoint);
using (var publisherSocket = new XPublisherSocket())
{
publisherSocket.Bind(_toSubscriberEndpoint);
_proxy = new Proxy(subscriberSocket, publisherSocket);
_proxy.Start();
}
}
}
public void Start()
{
using (var xpubSocket = new XPublisherSocket(_settings.PubAddress))
using (var xsubSocket = new XSubscriberSocket(_settings.SubAddress))
{
// proxy messages between frontend / backend
var proxy = new Proxy(xsubSocket, xpubSocket);
_logger.LogInformation("Starting Pub/Sub Intermediary ...");
_logger.LogInformation("Awaiting Connections ...");
// blocks indefinitely
proxy.Start();
}
}
public IntermediarySocket(IAddressBinder frontendAddressBinder, IAddressBinder backendAddressBinder,
XSubscriberSocket frontendSocket, XPublisherSocket backendSocket)
{
_frontendAddressBinder = frontendAddressBinder;
_backendAddressBinder = backendAddressBinder;
_frontendSocket = frontendSocket;
_backendSocket = backendSocket;
_frontendAddressBinder.ConnectOrBindAddress(_frontendSocket);
_backendAddressBinder.ConnectOrBindAddress(_backendSocket);
_poller = new NetMQPoller {
_frontendSocket, _backendSocket
};
_proxy = new Proxy(frontendSocket, backendSocket, poller: _poller);
}
public void NotSubscribed()
{
using (var pub = new XPublisherSocket())
using (var sub = new XSubscriberSocket())
{
var port = pub.BindRandomPort("tcp://127.0.0.1");
sub.Connect("tcp://127.0.0.1:" + port);
// let the subscriber connect to the publisher before sending a message
Thread.Sleep(500);
pub.SendFrame("Hello");
Assert.IsFalse(sub.TrySkipFrame());
}
}
public virtual void Setup(INetManager netManager)
{
if (string.IsNullOrEmpty(PushsocketString))
{
throw new ArgumentNullException(nameof(PushsocketString));
}
if (string.IsNullOrEmpty(PullSocketString))
{
throw new ArgumentNullException(nameof(PullSocketString));
}
if (netManager == null)
{
throw new ArgumentNullException(nameof(netManager));
}
if (!string.IsNullOrEmpty(XPubSocketString) && !string.IsNullOrEmpty(XSubSocketString))
{
var PublisherSocket = new XPublisherSocket(XPubSocketString);
var SubscriberSocket = new XSubscriberSocket(XSubSocketString);
GlobalServerProxy = new Proxy(SubscriberSocket, PublisherSocket);
}
sender = new PushSocket(PushsocketString);
responseSocket = new PullSocket(PullSocketString);
Poller = new NetMQPoller()
{
sender,
responseSocket,
PushQueue
};
NetSend = netManager;
PushQueue.ReceiveReady += (o, args) =>
{
var msg = PushQueue.Dequeue();
sender.SendMultipartMessage(msg);
};
responseSocket.ReceiveReady += ProcessResponse;
IsSetuped = true;
}
/// <summary>
/// Starts the external to local message transfering.
/// </summary>
/// <param name="portForSubscribers">The port for local subscribers.</param>
/// <param name="discoveryEndpoints">The endpoints to perform other brokers discovery.</param>
private void StartExternalToLocalTransfer(int portForSubscribers, EndpointsRange discoveryEndpoints)
{
Task.Run(() =>
{
using (var xsubSocket = new XSubscriberSocket())
using (var xpubSocket = new XPublisherSocket())
{
xpubSocket.Bind($"tcp://localhost:{portForSubscribers}");
var dynamicSubscriber = new DynamicSubscriber(xsubSocket, discoveryEndpoints);
dynamicSubscriber.StartDiscovering();
_externalToLocalProxy = new NetMQ.Proxy(xpubSocket, xsubSocket);
_externalToLocalProxy.Start();
}
});
}
public void SimplePubSub()
{
using (var pub = new XPublisherSocket())
using (var sub = new XSubscriberSocket())
{
var port = pub.BindRandomPort("tcp://127.0.0.1");
sub.Connect("tcp://127.0.0.1:" + port);
sub.SendFrame(new byte[] { 1 });
// let the subscriber connect to the publisher before sending a message
Thread.Sleep(500);
pub.SendFrame("Hello");
Assert.AreEqual("Hello", sub.ReceiveFrameString(out bool more));
Assert.False(more);
}
}
public void BroadcastEnabled()
{
using (var pub = new XPublisherSocket())
using (var sub1 = new XSubscriberSocket())
using (var sub2 = new XSubscriberSocket())
{
pub.Bind("inproc://manual");
pub.Options.XPubBroadcast = true;
sub1.Connect("inproc://manual");
sub2.Connect("inproc://manual");
sub1.SendFrame(new byte[] { 1, (byte)'A' });
sub2.SendFrame(new byte[] { 1, (byte)'A' });
var payload = new[] { (byte)42 };
var msg = new Msg();
msg.InitEmpty();
// add prefix 2 to the topic, this indicates a broadcast message and it will not be sent to sub1
sub1.SendFrame(new byte[] { 2, (byte)'A' }, true);
sub1.SendFrame(new byte[] { (byte)42 });
var subscription = pub.ReceiveFrameBytes();
var topic = pub.ReceiveFrameBytes();
var message = pub.ReceiveFrameBytes();
Assert.AreEqual(2, topic[0]);
// we must skip the first byte if we have detected a broadcast message
// the sender of this message is already marked for exclusion
// but the match logic in Send should work with normal topic.
topic = topic.Skip(1).ToArray();
pub.SendFrame(topic, true);
pub.SendFrame(message);
var broadcast2 = sub2.ReceiveFrameBytes();
Assert.IsTrue(broadcast2[0] == 65);
broadcast2 = sub2.ReceiveFrameBytes();
Assert.IsTrue(broadcast2.SequenceEqual(payload));
// this message SHOULD NOT be resent to sub1
var received = sub1.TryReceive(ref msg, System.TimeSpan.FromMilliseconds(500));
Assert.IsFalse(received);
}
}
public void Launch()
{
try
{
using (_xPubSocket = new XPublisherSocket($"@tcp://localhost:{_xPubPort}"))
using (_xSubSocket = new XSubscriberSocket($"@tcp://localhost:{_xSubPort}"))
{
_xPubSocket.ReceiveReady += _xPubSocket_ReceiveReady;
_xSubSocket.ReceiveReady += _xSubSocket_ReceiveReady;
var proxy = new Proxy(_xSubSocket, _xPubSocket);
Console.WriteLine("Broker started ..");
proxy.Start();
}
}
catch (Exception ex)
{
Console.WriteLine($"Error : {ex.Message}");
throw;
}
}
public void BroadcastDisabled()
{
using (var pub = new XPublisherSocket())
using (var sub1 = new XSubscriberSocket())
using (var sub2 = new XSubscriberSocket())
{
pub.Bind("inproc://manual");
pub.Options.XPubBroadcast = false;
sub1.Connect("inproc://manual");
sub2.Connect("inproc://manual");
Thread.Sleep(50);
sub1.SendFrame(new byte[] { 1, (byte)'A' });
sub2.SendFrame(new byte[] { 1, (byte)'A' });
var payload = new[] { (byte)42 };
var msg = new Msg();
msg.InitEmpty();
sub1.SendFrame(new byte[] { (byte)'A' }, true);
sub1.SendFrame(new byte[] { (byte)42 });
var subscription = pub.ReceiveFrameBytes();
var topic = pub.ReceiveFrameBytes();
var message = pub.ReceiveFrameBytes();
pub.SendFrame(topic, true);
pub.SendFrame(message);
var broadcast2 = sub2.ReceiveFrameBytes();
Assert.IsTrue(broadcast2[0] == 65);
broadcast2 = sub2.ReceiveFrameBytes();
Assert.IsTrue(broadcast2.SequenceEqual(payload));
// sub1 should receive a message normally
var broadcast1 = sub1.ReceiveFrameBytes();
Assert.IsTrue(broadcast1[0] == 65);
broadcast1 = sub1.ReceiveFrameBytes();
Assert.IsTrue(broadcast1.SequenceEqual(payload));
}
}
protected void Dispose(bool disposing)
{
if (!_disposedValue)
{
if (disposing)
{
_proxy.Stop();
_proxy = null;
_poller.Dispose();
_poller = null;
_backendSocket.Dispose();
_backendSocket = null;
_frontendSocket.Dispose();
_frontendSocket = null;
}
_disposedValue = true;
}
}
public void Census()
{
using (var pub = new XPublisherSocket())
using (var sub = new XSubscriberSocket())
{
var port = pub.BindRandomPort("tcp://127.0.0.1");
sub.Connect("tcp://127.0.0.1:" + port);
sub.SendFrame("Message from subscriber");
// let the subscriber connect to the publisher before sending a message
Thread.Sleep(500);
var txt = pub.ReceiveFrameString();
Assert.AreEqual("Message from subscriber", txt);
sub.SendFrame(new byte[] { });
var msg = pub.ReceiveFrameBytes();
Assert.True(msg.Length == 0);
}
}
public void Manual()
{
using (var pub = new XPublisherSocket())
using (var sub = new XSubscriberSocket())
{
pub.Bind("inproc://manual");
pub.Options.ManualPublisher = true;
sub.Connect("inproc://manual");
sub.SendFrame(new byte[] { 1, (byte)'A' });
var subscription = pub.ReceiveFrameBytes();
Assert.AreEqual(subscription[1], (byte)'A');
pub.Subscribe("B");
pub.SendFrame("A");
pub.SendFrame("B");
Assert.AreEqual("B", sub.ReceiveFrameString());
}
}
protected void Dispose(bool disposing)
{
if (!_disposedValue)
{
if (disposing)
{
_proxy.Stop();
_proxy = null;
_poller.CancelAndJoin();
_poller.Dispose();
_poller = null;
_backendSocket.Dispose();
_backendSocket = null;
_frontendSocket.Dispose();
_frontendSocket = null;
}
_disposedValue = true;
}
}
public void ThroughXPubXSub()
{
using (var xpub = new XPublisherSocket())
using (var xsub = new XSubscriberSocket())
using (var proxyPoller = new NetMQPoller {
xsub, xpub
})
{
var xPubPort = (ushort)xpub.BindRandomPort("tcp://*");
var xSubPort = (ushort)xsub.BindRandomPort("tcp://*");
var proxy = new Proxy(xsub, xpub, poller: proxyPoller);
proxy.Start();
proxyPoller.RunAsync();
using (var pub = new PublisherSocket())
using (var sub = new SubscriberSocket())
{
// Client 1
sub.Connect(string.Format("tcp://localhost:{0}", xPubPort));
pub.Connect(string.Format("tcp://localhost:{0}", xSubPort));
sub.Subscribe("A");
// Client 2
Thread.Sleep(500);
pub.SendMoreFrame("A").SendFrame("Hello");
var frames = new List <string>();
Assert.True(sub.TryReceiveMultipartStrings(TimeSpan.FromSeconds(1), ref frames));
CollectionAssert.AreEqual(
new[] { "A", "Hello" },
frames);
}
}
}
public void MultiplePublishers()
{
using (var pub = new XPublisherSocket())
using (var pub2 = new XPublisherSocket())
using (var sub = new XSubscriberSocket())
using (var sub2 = new XSubscriberSocket())
{
var port = pub.BindRandomPort("tcp://127.0.0.1");
var port2 = pub2.BindRandomPort("tcp://127.0.0.1");
// see comments below why verbose option is needed in this test
pub.Options.XPubVerbose = true;
pub2.Options.XPubVerbose = true;
sub.Connect("tcp://127.0.0.1:" + port);
sub.Connect("tcp://127.0.0.1:" + port2);
sub2.Connect("tcp://127.0.0.1:" + port);
sub2.Connect("tcp://127.0.0.1:" + port2);
// should subscribe to both
sub.SendFrame(new byte[] { 1, (byte)'A' });
sub2.SendFrame(new byte[] { 1, (byte)'A' });
Thread.Sleep(500);
var msg = pub.ReceiveFrameString();
Assert.AreEqual(2, msg.Length);
Assert.AreEqual(1, msg[0]);
Assert.AreEqual('A', msg[1]);
var msg2 = pub2.ReceiveFrameBytes();
Assert.AreEqual(2, msg2.Length);
Assert.AreEqual(1, msg2[0]);
Assert.AreEqual('A', msg2[1]);
// Next two blocks (pub(2).Receive) will hang without XPub verbose option:
// sub and sub2 both have sent `.Send(new byte[] { 1, (byte)'A' });` messages
// which are the same, so XPub will discard the second message for .Receive()
// because it is normally used to pass topics upstream.
// (un)subs are done in XPub.cs at line 150-175, quote:
// >> If the subscription is not a duplicate, store it so that it can be
// >> passed to used on next recv call.
// For verbose:
// >> If true, send all subscription messages upstream, not just unique ones
// These options must be set before sub2.Send(new byte[] { 1, (byte)'A' });
// pub.Options.XPubVerbose = true;
// pub2.Options.XPubVerbose = true;
// Note that resending sub2.Send(..) here wont help because XSub won't resent existing subs to XPub - quite sane behavior
// Comment out the verbose options and the next 8 lines and the test will
// still pass, even with non-unique messages from subscribers (see the bottom of the test)
msg = pub.ReceiveFrameString();
Assert.AreEqual(2, msg.Length);
Assert.AreEqual(1, msg[0]);
Assert.AreEqual('A', msg[1]);
msg2 = pub2.ReceiveFrameBytes();
Assert.AreEqual(2, msg2.Length);
Assert.AreEqual(1, msg2[0]);
Assert.AreEqual('A', msg2[1]);
pub.SendMoreFrame("A");
pub.SendFrame("Hello from the first publisher");
bool more;
Assert.AreEqual("A", sub.ReceiveFrameString(out more));
Assert.IsTrue(more);
Assert.AreEqual("Hello from the first publisher", sub.ReceiveFrameString(out more));
Assert.False(more);
// this returns the result of the latest
// connect - address2, not the source of the message
// This is documented here: http://api.zeromq.org/3-2:zmq-getsockopt
//var ep = sub2.Options.LastEndpoint;
//Assert.AreEqual(address, ep);
// same for sub2
Assert.AreEqual("A", sub2.ReceiveFrameString(out more));
Assert.IsTrue(more);
Assert.AreEqual("Hello from the first publisher", sub2.ReceiveFrameString(out more));
Assert.False(more);
pub2.SendMoreFrame("A");
pub2.SendFrame("Hello from the second publisher");
Assert.AreEqual("A", sub.ReceiveFrameString(out more));
Assert.IsTrue(more);
Assert.AreEqual("Hello from the second publisher", sub.ReceiveFrameString(out more));
Assert.False(more);
Assert.AreEqual("tcp://127.0.0.1:" + port2, sub2.Options.LastEndpoint);
// same for sub2
Assert.AreEqual("A", sub2.ReceiveFrameString(out more));
Assert.IsTrue(more);
Assert.AreEqual("Hello from the second publisher", sub2.ReceiveFrameString(out more));
Assert.False(more);
// send both to address and address2
sub.SendFrame("Message from subscriber");
sub2.SendFrame("Message from subscriber 2");
Assert.AreEqual("Message from subscriber", pub.ReceiveFrameString());
Assert.AreEqual("Message from subscriber", pub2.ReceiveFrameString());
// Does not hang even though is the same as above, but the first byte is not 1 or 0.
// Won't hang even when messages are equal
Assert.AreEqual("Message from subscriber 2", pub.ReceiveFrameString());
Assert.AreEqual("Message from subscriber 2", pub2.ReceiveFrameString());
}
}
public void CouldTrackSubscriberIdentityInXPubSocket()
{
using (var pub = new XPublisherSocket())
using (var sub1 = new XSubscriberSocket())
using (var sub2 = new XSubscriberSocket()) {
pub.Bind("inproc://manual");
pub.Options.ManualPublisher = true;
sub1.Connect("inproc://manual");
sub2.Connect("inproc://manual");
Thread.Sleep(50);
sub1.SendFrame(new byte[] { 1, (byte)'A' });
var identity1 = new byte[] { 1 };
var identity2 = new byte[] { 2 };
sub1.SendFrame(new byte[] { (byte)'A' }, true);
sub1.SendFrame(new byte[] { (byte)42 });
var subscription = pub.ReceiveFrameBytes();
// NB Identity must be set before pub.Subscribe/Unsubscribe/Send, because these operations clear a private field with last subscriber
// set identity to sub1
pub.Options.Identity = identity1;
Assert.IsTrue(identity1.SequenceEqual(pub.Options.Identity), "Cannot read identity that was just set");
pub.Subscribe(subscription);
Assert.IsTrue(identity1.SequenceEqual(pub.Options.Identity), "Identity must be kept after Subscribe/Unsubscribe/Send operations (which clear m_lastPipe)");
var topic = pub.ReceiveFrameBytes();
var message = pub.ReceiveFrameBytes();
sub2.SendFrame(new byte[] { 1, (byte)'A' });
sub2.SendFrame(new byte[] { (byte)'A' }, true);
sub2.SendFrame(new byte[] { (byte)43 });
subscription = pub.ReceiveFrameBytes();
// Id of sub2 is not set yet
Assert.IsNull(pub.Options.Identity);
pub.Options.Identity = identity2;
Assert.IsTrue(identity2.SequenceEqual(pub.Options.Identity), "Cannot read identity that was just set");
pub.Subscribe(subscription);
Assert.IsTrue(identity2.SequenceEqual(pub.Options.Identity), "Identity must be kept after Subscribe/Unsubscribe/Send operations (which clear m_lastPipe)");
topic = pub.ReceiveFrameBytes();
message = pub.ReceiveFrameBytes();
sub1.SendFrame(new byte[] { (byte)'A' }, true);
sub1.SendFrame(new byte[] { (byte)44 });
topic = pub.ReceiveFrameBytes();
message = pub.ReceiveFrameBytes();
Assert.IsTrue(identity1.SequenceEqual(pub.Options.Identity), "Identity option must be set to the identity of sub1 here");
sub2.SendFrame(new byte[] { (byte)'A' }, true);
sub2.SendFrame(new byte[] { (byte)45 });
topic = pub.ReceiveFrameBytes();
message = pub.ReceiveFrameBytes();
Assert.IsTrue(identity2.SequenceEqual(pub.Options.Identity), "Identity option must be set to the identity of sub2 here");
}
}
