public void Census()
{
using (NetMQContext contex = NetMQContext.Create())
{
using (var pub = contex.CreateXPublisherSocket())
{
pub.Bind("tcp://127.0.0.1:5002");
using (var sub = contex.CreateXSubscriberSocket())
{
sub.Options.ReceiveTimeout = TimeSpan.FromSeconds(2.0);
sub.Connect("tcp://127.0.0.1:5002");
sub.Send("Message from subscriber");
// let the subscriber connect to the publisher before sending a message
Thread.Sleep(500);
var txt = pub.ReceiveString();
Assert.AreEqual("Message from subscriber", txt);
sub.Send(new byte[] { });
var msg = pub.Receive();
Assert.True(msg.Length == 0);
}
}
}
}
public void SimplePubSub()
{
using (NetMQContext contex = NetMQContext.Create())
{
using (var pub = contex.CreateXPublisherSocket())
{
pub.Bind("tcp://127.0.0.1:5002");
using (var sub = contex.CreateXSubscriberSocket())
{
sub.Connect("tcp://127.0.0.1:5002");
sub.Send(new byte[] { 1 });
// let the subscriber connect to the publisher before sending a message
Thread.Sleep(500);
pub.Send("Hello");
bool more;
string m = sub.ReceiveString(out more);
Assert.AreEqual("Hello", m);
Assert.False(more);
}
}
}
}
public void Manual()
{
using (NetMQContext contex = NetMQContext.Create())
{
using (var pub = contex.CreateXPublisherSocket())
{
pub.Bind("inproc://manual");
pub.Options.ManualPublisher = true;
using (var sub = contex.CreateXSubscriberSocket())
{
sub.Connect("inproc://manual");
sub.Send(new byte[] { 1, (byte)'A' });
var subscription = pub.Receive();
Assert.AreEqual(subscription[1], (byte)'A');
pub.Subscribe("B");
pub.Send("A");
pub.Send("B");
var topic = sub.ReceiveString();
Assert.AreEqual("B", topic);
}
}
}
}
public void MultipleSubscriptions()
{
using (NetMQContext contex = NetMQContext.Create())
{
using (var pub = contex.CreateXPublisherSocket())
{
pub.Bind("tcp://127.0.0.1:5002");
using (var sub = contex.CreateXSubscriberSocket())
{
sub.Connect("tcp://127.0.0.1:5002");
sub.Send(new byte[] { 1, (byte)'C' });
sub.Send(new byte[] { 1, (byte)'B' });
sub.Send(new byte[] { 1, (byte)'A' });
sub.Send(new byte[] { 1, (byte)'D' });
sub.Send(new byte[] { 1, (byte)'E' });
Thread.Sleep(500);
sub.Send(new byte[] { 0, (byte)'C' });
sub.Send(new byte[] { 0, (byte)'B' });
sub.Send(new byte[] { 0, (byte)'A' });
sub.Send(new byte[] { 0, (byte)'D' });
sub.Send(new byte[] { 0, (byte)'E' });
Thread.Sleep(500);
}
}
}
}
void CreateClient()
{
switch (_type)
{
case MQClientType.Request:
_clientSocket = _context.CreateRequestSocket();
break;
case MQClientType.Subscriber:
_clientSocket = _context.CreateSubscriberSocket();
break;
case MQClientType.Dealer:
_clientSocket = _context.CreateDealerSocket();
break;
case MQClientType.Stream:
_clientSocket = _context.CreateStreamSocket();
break;
case MQClientType.Pull:
_clientSocket = _context.CreatePullSocket();
break;
case MQClientType.XSubscriber:
_clientSocket = _context.CreateXSubscriberSocket();
break;
default:
_clientSocket = _context.CreateRequestSocket();
break;
}
_clientSocket.Connect("tcp://" + _ip + ":" + _port);
}
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);
}
}
}
public void MultipleSubscribers()
{
using (NetMQContext contex = NetMQContext.Create())
{
using (var pub = contex.CreateXPublisherSocket())
{
pub.Bind("tcp://127.0.0.1:5002");
using (var sub = contex.CreateXSubscriberSocket())
using (var sub2 = contex.CreateXSubscriberSocket())
{
sub.Connect("tcp://127.0.0.1:5002");
sub.Send(new byte[] { 1, (byte)'A' });
sub.Send(new byte[] { 1, (byte)'A', (byte)'B' });
sub.Send(new byte[] { 1, (byte)'B' });
sub.Send(new byte[] { 1, (byte)'C' });
sub2.Connect("tcp://127.0.0.1:5002");
sub2.Send(new byte[] { 1, (byte)'A' });
sub2.Send(new byte[] { 1, (byte)'A', (byte)'B' });
sub2.Send(new byte[] { 1, (byte)'C' });
Thread.Sleep(500);
pub.SendMore("AB");
pub.Send("1");
string message = sub.ReceiveStringMessages().First();
Assert.AreEqual("AB", message, "First subscriber is expected to receive the message");
message = sub2.ReceiveStringMessages().First();
Assert.AreEqual("AB", message, "Second subscriber is expected to receive the message");
}
}
}
}
public void UnSubscribe()
{
using (NetMQContext contex = NetMQContext.Create())
{
using (var pub = contex.CreateXPublisherSocket())
{
pub.Bind("tcp://127.0.0.1:5002");
using (var sub = contex.CreateXSubscriberSocket())
{
sub.Connect("tcp://127.0.0.1:5002");
sub.Send(new byte[] { 1, (byte)'A' });
// let the subscrbier connect to the publisher before sending a message
Thread.Sleep(500);
pub.SendMore("A");
pub.Send("Hello");
bool more;
string m = sub.ReceiveString(out more);
Assert.AreEqual("A", m);
Assert.IsTrue(more);
string m2 = sub.ReceiveString(out more);
Assert.AreEqual("Hello", m2);
Assert.False(more);
sub.Send(new byte[] { 0, (byte)'A' });
Thread.Sleep(500);
pub.SendMore("A");
pub.Send("Hello");
string m3 = sub.ReceiveString(true, out more);
}
}
}
}
public void NotSubscribed()
{
using (NetMQContext contex = NetMQContext.Create())
{
using (var pub = contex.CreateXPublisherSocket())
{
pub.Bind("tcp://127.0.0.1:5002");
using (var sub = contex.CreateXSubscriberSocket())
{
sub.Connect("tcp://127.0.0.1:5002");
// let the subscriber connect to the publisher before sending a message
Thread.Sleep(500);
pub.Send("Hello");
bool more;
string m = sub.ReceiveString(true, out more);
}
}
}
}
private void initServerThr()
{
using (NetMQContext context = NetMQContext.Create())
{
using (var receiver = context.CreateXSubscriberSocket())
using (var publisher = context.CreateXPublisherSocket())
{
try
{
receiver.Bind(cfg.ServerR);
publisher.Bind(cfg.ServerS);
}
catch (Exception ex)
{
DCLogger.LogError("Exception in ServerThr's bind work:{0}", ex.Message);
}
// send heartbeat every two seconds
poller = new Poller();
NetMQTimer heartbeatTimer = new NetMQTimer(10000);
poller.AddTimer(heartbeatTimer);
heartbeatTimer.Elapsed += (sender, eventArgs) =>
{
try
{
publisher.SendMultipartBytes(Global.DC_CTRL_HB, BitConverter.GetBytes(DateTime.Now.Ticks));
DCLogger.LogInfo("Server's HeartBeat sended:{0}", DateTime.Now);
}
catch (Exception ex)
{
DCLogger.LogError("Exception in ServerThr's heartbeat work:{0}", ex.Message);
}
};
poller.PollTillCancelledNonBlocking();
// proxy messages between frontend / backend
proxy = new Proxy(receiver, publisher);
// blocks indefinitely
proxy.Start();
////r & s
//receiver.ReceiveReady += (sender, eventArgs) =>
// {
// try
// {
// List<byte[]> dataLst = new List<byte[]>();
// receiver.ReceiveMultipartBytes(ref dataLst, 2);
// DCLogger.LogInfo("Received:{0}", Global.Encoding.GetString(dataLst[0]));
// if (dataLst.Count != 2)
// return;
// publisher.SendMultipartBytes(dataLst[0], dataLst[1]);
// DCLogger.LogInfo("Sended:{0}", Global.Encoding.GetString(dataLst[0]));
// }
// catch (Exception ex)
// {
// DCLogger.LogError("Exception in ServerThr's exchange work:{0}", ex.Message);
// }
// };
//poller.AddSocket(receiver);
}
}
}
public void MultiplePublishers()
{
using (NetMQContext contex = NetMQContext.Create()) {
using (var pub = contex.CreateXPublisherSocket())
using (var pub2 = contex.CreateXPublisherSocket()) {
var address = "tcp://127.0.0.1:5002";
var address2 = "tcp://127.0.0.1:5003";
pub.Bind(address);
pub2.Bind(address2);
// see comments below why verbose option is needed in this test
pub.Options.XPubVerbose = true;
pub2.Options.XPubVerbose = true;
using (var sub = contex.CreateXSubscriberSocket())
using (var sub2 = contex.CreateXSubscriberSocket())
{
sub.Connect(address);
sub.Connect(address2);
sub2.Connect(address);
sub2.Connect(address2);
// should subscribe to both
sub.Send(new byte[] { 1, (byte)'A' });
sub2.Send(new byte[] { 1, (byte)'A' });
Thread.Sleep(500);
var msg = pub.ReceiveString();
Assert.AreEqual(2, msg.Length);
Assert.AreEqual(1, msg[0]);
Assert.AreEqual('A', msg[1]);
var msg2 = pub2.Receive();
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.ReceiveString();
Assert.AreEqual(2, msg.Length);
Assert.AreEqual(1, msg[0]);
Assert.AreEqual('A', msg[1]);
msg2 = pub2.Receive();
Assert.AreEqual(2, msg2.Length);
Assert.AreEqual(1, msg2[0]);
Assert.AreEqual('A', msg2[1]);
pub.SendMore("A");
pub.Send("Hello from the first publisher");
bool more;
string m = sub.ReceiveString(out more);
Assert.AreEqual("A", m);
Assert.IsTrue(more);
string m2 = sub.ReceiveString(out more);
Assert.AreEqual("Hello from the first publisher", m2);
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.GetLastEndpoint;
//Assert.AreEqual(address, ep);
// same for sub2
m = sub2.ReceiveString(out more);
Assert.AreEqual("A", m);
Assert.IsTrue(more);
m2 = sub2.ReceiveString(out more);
Assert.AreEqual("Hello from the first publisher", m2);
Assert.False(more);
pub2.SendMore("A");
pub2.Send("Hello from the second publisher");
string m3 = sub.ReceiveString(out more);
Assert.AreEqual("A", m3);
Assert.IsTrue(more);
string m4 = sub.ReceiveString(out more);
Assert.AreEqual("Hello from the second publisher", m4);
Assert.False(more);
ep = sub2.Options.GetLastEndpoint;
Assert.AreEqual(address2, ep);
// same for sub2
m3 = sub2.ReceiveString(out more);
Assert.AreEqual("A", m3);
Assert.IsTrue(more);
m4 = sub2.ReceiveString(out more);
Assert.AreEqual("Hello from the second publisher", m4);
Assert.False(more);
// send both to address and address2
sub.Send("Message from subscriber");
sub2.Send("Message from subscriber 2");
var txt = pub.ReceiveString();
Assert.AreEqual("Message from subscriber", txt);
var txt2 = pub2.ReceiveString();
Assert.AreEqual("Message from subscriber", txt2);
// 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
txt = pub.ReceiveString();
Assert.AreEqual("Message from subscriber 2", txt);
txt2 = pub2.ReceiveString();
Assert.AreEqual("Message from subscriber 2", txt2);
}
}
}
}
