private PublisherSocket GetNewPublisherSocket(string addressZeroMq)
{
PublisherSocket publisherSocket;
{
_loggerDelegate?.Invoke(string.Format("Publisher socket binding to: {0}\n", addressZeroMq));
publisherSocket = new PublisherSocket();
// Corner case: wait until publisher socket is ready (see code below that waits for
// "_publisherReadySignal").
NetMQMonitor monitor;
{
// Must ensure that we have a unique monitor name for every instance of this class.
string endPoint = string.Format("inproc://#SubjectNetMQ#Publisher#{0}#{1}", addressZeroMq, Guid.NewGuid().ToString());
monitor = new NetMQMonitor(publisherSocket,
endPoint,
SocketEvents.Accepted | SocketEvents.Listening
);
monitor.Accepted += Publisher_Event_Accepted;
monitor.Listening += Publisher_Event_Listening;
monitor.StartAsync();
}
publisherSocket.Options.SendHighWatermark = this.HighwaterMark;
try
{
publisherSocket.Bind(addressZeroMq);
}
catch (NetMQException ex)
{
// This is usually because the address is in use.
throw new Exception(string.Format("Error E56874. Cannot bind publisher to '{0}'. 95% probability that this is caused by trying to bind a publisher to a port already in use by another process. To fix, choose a unique publisher port for this process. For more on this error, see 'Readme.md' (or the GitHub homepage for NetMQ.ReactiveExtensions).", addressZeroMq), ex);
}
// Corner case: wait until publisher socket is ready (see code below that sets "_publisherReadySignal").
{
Stopwatch sw = Stopwatch.StartNew();
_publisherReadySignal.WaitOne(TimeSpan.FromMilliseconds(3000));
_loggerDelegate?.Invoke(string.Format("Publisher: Waited {0} ms for binding.\n", sw.ElapsedMilliseconds));
}
{
monitor.Accepted -= Publisher_Event_Accepted;
monitor.Listening -= Publisher_Event_Listening;
// Current issue with NegMQ: Cannot stop or dispose monitor, or else it stops the parent socket.
//monitor.Stop();
//monitor.Dispose();
}
}
// Otherwise, the first item we publish may get missed by the subscriber. 500 milliseconds consistently works
// locally, but occasionally fails on the AppVeyor build server. 650 milliseconds is optimal.
using (EventWaitHandle wait = new ManualResetEvent(false))
{
// Cannot use Thread.Sleep() here, as this is incompatible with .NET Core 1.0, Windows 8.0, 8.1, and 10.
wait.WaitOne(TimeSpan.FromMilliseconds(650));
}
return(publisherSocket);
}
public void StartAsync()
{
using (var rep = new ResponseSocket())
using (var monitor = new NetMQMonitor(rep, "inproc://foo", SocketEvents.Closed))
{
var task = monitor.StartAsync();
Thread.Sleep(200);
Assert.AreEqual(TaskStatus.Running, task.Status);
monitor.Stop();
Assert.True(task.Wait(TimeSpan.FromMilliseconds(1000)));
}
}
public void StartAsync()
{
using (var rep = new ResponseSocket())
using (var monitor = new NetMQMonitor(rep, "inproc://foo", SocketEvents.Closed))
{
var task = monitor.StartAsync();
Thread.Sleep(200);
Assert.AreEqual(TaskStatus.Running, task.Status);
monitor.Stop();
Assert.True(task.Wait(TimeSpan.FromMilliseconds(1000)));
}
}
private void InitializePublisherOnFirstUse()
{
if (m_initializePublisherDone == false) // Double checked locking.
{
lock (m_initializePublisherLock)
{
if (m_initializePublisherDone == false)
{
Console.WriteLine("Publisher socket binding to: {0}", ZeroMqAddress);
m_publisherSocket = new PublisherSocket();
// Corner case: wait until publisher socket is ready (see code below that waits for
// "_publisherReadySignal").
NetMQMonitor monitor;
{
// Must ensure that we have a unique monitor name for every instance of this class.
string endPoint = string.Format("inproc://#SubjectNetMQ#Publisher#{0}#{1}", this.QueueName, this.ZeroMqAddress);
monitor = new NetMQMonitor(m_publisherSocket, endPoint,
SocketEvents.Accepted | SocketEvents.Listening
);
monitor.Accepted += Publisher_Event_Accepted;
monitor.Listening += Publisher_Event_Listening;
monitor.StartAsync();
}
m_publisherSocket.Options.SendHighWatermark = 2000 * 1000;
m_publisherSocket.Bind(this.ZeroMqAddress);
// Corner case: wait until publisher socket is ready (see code below that sets
// "_publisherReadySignal").
{
Stopwatch sw = Stopwatch.StartNew();
m_publisherReadySignal.WaitOne(TimeSpan.FromMilliseconds(3000));
Console.Write("Publisher: Waited {0} ms for binding.\n", sw.ElapsedMilliseconds);
}
{
monitor.Accepted -= Publisher_Event_Accepted;
monitor.Listening -= Publisher_Event_Listening;
// Current issue with NegMQ: Cannot stop or dispose monitor, or else it stops the parent socket.
//monitor.Stop();
//monitor.Dispose();
}
m_initializePublisherDone = true;
}
} // lock
Thread.Sleep(500); // Otherwise, the first item we publish may get missed by the subscriber.
}
}
private static async Task CreatePushSocket()
{
var poller = new NetMQPoller();
push = new PushSocket();
push.BindRandomPort("tcp://127.0.0.1");
NetMQMonitor monitor = new NetMQMonitor(push, "inproc://req.inproc", SocketEvents.All);
monitor.Connected += Monitor_Connected;
monitor.EventReceived += Monitor_EventReceived;
//monitor.AttachToPoller(poller);
queue.ReceiveReady += Queue_ReceiveReady;;
push.Connect(address);
poller.Add(push);
poller.Add(queue);
poller.RunAsync();
await monitor.StartAsync();
}
private static void CreatePullSocket()
{
try
{
var poller = new NetMQPoller();
NetMQMonitor monitor = new NetMQMonitor(pull, "inproc://req.inproc", SocketEvents.All);
monitor.Accepted += Monitor_Accepted;
monitor.EventReceived += Monitor_EventReceived;
pull.ReceiveReady += Pull_ReceiveReady1;
pull.Bind(address);
//monitor.AttachToPoller(poller);
poller.Add(pull);
poller.RunAsync();
monitor.StartAsync();
}
catch (Exception ex)
{
}
}
public bool TryConnectAndMonitorSocket(NetMQSocket socket, string address, NetMQPoller poller = null, Action <IConnectionMonitor, bool> onConnectionStateChanged = null)
{
_onConnectionStateChanged = onConnectionStateChanged;
_monitor = new NetMQMonitor(socket, $"inproc://monitor.socket/{Guid.NewGuid()}", SocketEvents.Connected | SocketEvents.Disconnected);
_monitor.Connected += MonitorConnected;
_monitor.Disconnected += MonitorDisconnected;
if (poller == null)
{
_monitorTask = _monitor.StartAsync();
}
else
{
_monitor.AttachToPoller(poller);
}
socket.Connect(address);
return(WaitForConnection());
}
protected override void _SocketBuilder()
{
reportLog("Starting Router name " + Name, LogType.INFO, section);
socket = new RouterSocket();
socket.Options.TcpKeepalive = true;
socket.Options.TcpKeepaliveIdle = TimeSpan.FromMilliseconds(100);
socket.Options.TcpKeepaliveInterval = TimeSpan.FromMilliseconds(100);
local_port = socket.BindRandomPort("tcp://*");
monitor = new NetMQMonitor(socket, "inproc://router" + Net2.GetAddressIndex(), SocketEvents.All);
monitor.Disconnected += Monitor_Disconnected;
monitor.Accepted += Monitor_Connected;
monitor.Timeout = TimeSpan.FromMilliseconds(100);
task = monitor.StartAsync();
setState(Net2State.STARTED);
start_time = GetTime().sec;
reportLog("Router is ready on " + local_port, LogType.INFO, section);
}
private void InitializeSubscriberOnFirstUse()
{
if (m_initializeSubscriberDone == false) // Double checked locking.
{
lock (m_subscribersLock)
{
if (m_initializeSubscriberDone == false)
{
Console.WriteLine("Subscriber socket connecting to: {0}", ZeroMqAddress);
m_subscriberSocket = new SubscriberSocket();
// Corner case: wait until subscriber socket is ready (see code below that waits for
// "_subscriberReadySignal").
NetMQMonitor monitor;
{
// Must ensure that we have a unique monitor name for every instance of this class.
string endpoint = string.Format("inproc://#SubjectNetMQ#Subscriber#{0}#{1}", this.QueueName, this.ZeroMqAddress);
monitor = new NetMQMonitor(m_subscriberSocket, endpoint,
SocketEvents.ConnectRetried | SocketEvents.Connected);
monitor.ConnectRetried += Subscriber_Event_ConnectRetried;
monitor.Connected += Subscriber_Event_Connected;
monitor.StartAsync();
}
m_subscriberSocket.Options.ReceiveHighWatermark = 2000 * 1000;
m_subscriberSocket.Connect(this.ZeroMqAddress);
m_subscriberSocket.Subscribe(this.QueueName);
if (m_cancellationTokenSource == null)
{
m_cancellationTokenSource = new CancellationTokenSource();
}
ManualResetEvent threadReadySignal = new ManualResetEvent(false);
m_thread = new Thread(() =>
{
try
{
Console.Write("Thread initialized.\n");
threadReadySignal.Set();
while (m_cancellationTokenSource.IsCancellationRequested == false)
{
string messageTopicReceived = m_subscriberSocket.ReceiveFrameString();
if (messageTopicReceived != QueueName)
{
throw new Exception(string.Format("Error E65724. We should always subscribe on the queue name '{0}', instead we got '{1}'.", QueueName, messageTopicReceived));
}
var type = m_subscriberSocket.ReceiveFrameString();
switch (type)
{
// Originated from "OnNext".
case "N":
T messageReceived = m_subscriberSocket.ReceiveFrameBytes().DeserializeProtoBuf <T>();
lock (m_subscribersLock)
{
m_subscribers.ForEach(o => o.OnNext(messageReceived));
}
break;
// Originated from "OnCompleted".
case "C":
lock (m_subscribersLock)
{
m_subscribers.ForEach(o => o.OnCompleted());
// We are done! We don't want to send any more messages to subscribers, and we
// want to close the listening socket.
m_cancellationTokenSource.Cancel();
}
break;
// Originated from "OnException".
case "E":
Exception exception;
string exceptionAsString = "Uninitialized.";
try
{
// Not used, but useful for cross-platform debugging: we can read the error straight off the wire.
exceptionAsString = m_subscriberSocket.ReceiveFrameBytes().DeserializeProtoBuf <string>();
SerializableException exceptionWrapper = m_subscriberSocket.ReceiveFrameBytes().DeSerializeException();
exception = exceptionWrapper.InnerException;
}
catch (Exception ex)
{
// If we had trouble deserializing the exception (probably due to a
// different version of .NET), then do the next best thing: (1) The
// inner exception is the error we got when deserializing, and (2) the
// main exception is the human-readable "exception.ToString()" that we
// originally captured.
exception = new Exception(exceptionAsString, ex);
}
lock (m_subscribersLock)
{
m_subscribers.ForEach(o => o.OnError(exception));
}
break;
// Originated from a "Ping" request.
case "P":
// Do nothing, this is a ping command used to wait until sockets are initialized properly.
Console.Write("Received ping.\n");
break;
default:
throw new Exception(string.Format("Error E28734. Something is wrong - received '{0}' when we expected \"N\", \"C\" or \"E\" - are we out of sync?", type));
}
}
}
catch (Exception ex)
{
Console.Write("Error E23844. Exception in threadName \"{0}\". Thread exiting. Exception: \"{1}\".\n", QueueName, ex.Message);
lock (m_subscribersLock)
{
this.m_subscribers.ForEach((ob) => ob.OnError(ex));
}
}
finally
{
lock (m_subscribersLock)
{
m_subscribers.Clear();
}
m_cancellationTokenSource.Dispose();
// Disconnect from the socket.
m_subscriberSocket.Dispose();
}
})
{
Name = this.QueueName,
IsBackground = true // Have to set it to background, or else it will not exit when the program exits.
};
m_thread.Start();
// Wait for thread to properly spin up.
threadReadySignal.WaitOne(TimeSpan.FromMilliseconds(3000));
// Corner case: wait until the publisher socket is ready (see code above that sets
// "_subscriberReadySignal").
{
Stopwatch sw = Stopwatch.StartNew();
m_subscriberReadySignal.WaitOne(TimeSpan.FromMilliseconds(3000));
Console.Write("Subscriber: Waited {0} ms for connection.\n", sw.ElapsedMilliseconds);
monitor.ConnectRetried -= Subscriber_Event_ConnectRetried;
monitor.Connected -= Subscriber_Event_Connected;
// Issue with NetMQ - cannot .Stop or .Dispose, or else it will dispose of the parent socket.
//monitor.Stop();
//monitor.Dispose();
}
Console.Write("Subscriber: finished setup.\n");
m_initializeSubscriberDone = true;
}
} // lock
Thread.Sleep(500); // Otherwise, the first item we subscribe to may get missed by the subscriber.
}
}
private PublisherSocket GetNewPublisherSocket(string addressZeroMq)
{
PublisherSocket publisherSocket;
{
_loggerDelegate?.Invoke(string.Format("Publisher socket binding to: {0}\n", addressZeroMq));
publisherSocket = new PublisherSocket();
// Corner case: wait until publisher socket is ready (see code below that waits for
// "_publisherReadySignal").
NetMQMonitor monitor;
{
// Must ensure that we have a unique monitor name for every instance of this class.
string endPoint = string.Format("inproc://#SubjectNetMQ#Publisher#{0}#{1}", addressZeroMq, Guid.NewGuid().ToString());
monitor = new NetMQMonitor(publisherSocket,
endPoint,
SocketEvents.Accepted | SocketEvents.Listening
);
monitor.Accepted += Publisher_Event_Accepted;
monitor.Listening += Publisher_Event_Listening;
monitor.StartAsync();
}
publisherSocket.Options.SendHighWatermark = this.HighwaterMark;
try
{
publisherSocket.Bind(addressZeroMq);
}
catch (NetMQException ex)
{
// This is usually because the address is in use.
throw new Exception(string.Format("Error E56874. Cannot bind publisher to '{0}'. 95% probability that this is caused by trying to bind a publisher to a port already in use by another process. To fix, choose a unique publisher port for this process. For more on this error, see 'Readme.md' (or the GitHub homepage for NetMQ.ReactiveExtensions).", addressZeroMq), ex);
}
// Corner case: wait until publisher socket is ready (see code below that sets "_publisherReadySignal").
{
Stopwatch sw = Stopwatch.StartNew();
_publisherReadySignal.WaitOne(TimeSpan.FromMilliseconds(3000));
_loggerDelegate?.Invoke(string.Format("Publisher: Waited {0} ms for binding.\n", sw.ElapsedMilliseconds));
}
{
monitor.Accepted -= Publisher_Event_Accepted;
monitor.Listening -= Publisher_Event_Listening;
// Current issue with NegMQ: Cannot stop or dispose monitor, or else it stops the parent socket.
//monitor.Stop();
//monitor.Dispose();
}
}
// Otherwise, the first item we publish may get missed by the subscriber. 500 milliseconds consistently works
// locally, but occasionally fails on the AppVeyor build server. 650 milliseconds is optimal.
using (EventWaitHandle wait = new ManualResetEvent(false))
{
// Cannot use Thread.Sleep() here, as this is incompatible with .NET Core 1.0, Windows 8.0, 8.1, and 10.
wait.WaitOne(TimeSpan.FromMilliseconds(650));
}
return publisherSocket;
}
