protected override void ProducerAction()
{
using (NetMQContext ctx = NetMQContext.Create())
{
using (RouterSocket socket = ctx.CreateRouterSocket())
{
socket.Bind(Address);
while (true)
{
NetMQMessage message = socket.ReceiveMessage();
if (!IsEmpty)
{
Queue.Add(message);
}
}
}
}
}
private void RouterAction()
{
using (NetMQContext ctx = NetMQContext.Create())
{
using (RouterSocket socket = ctx.CreateRouterSocket())
{
socket.Bind(Address);
while (true)
{
NetMQMessage message = socket.ReceiveMessage();
string topic = message.Last.ConvertToString();
byte[] snapshot = _snapshotFactory(topic);
var response = new NetMQMessage();
response.Append(message.First);
response.AppendEmptyFrame();
response.Append(snapshot);
socket.SendMessage(response);
}
}
}
}
public void Router_Dealer_Demonstrating_Messages_From_Subscribers_To_Publisher()
{
// NOTES
// 1. Use ThreadLocal<DealerSocket> where each thread has
// its own client DealerSocket to talk to server
// 2. Each thread can send using it own socket
// 3. Each thread socket is added to poller
const int delay = 500; // millis
var clientSocketPerThread = new ThreadLocal <DealerSocket>();
using (var server = new RouterSocket("@tcp://127.0.0.1:5556"))
{
using (var poller = new NetMQPoller())
{
// Start some threads, each with its own DealerSocket
// to talk to the server socket. Creates lots of sockets,
// but no nasty race conditions no shared state, each
// thread has its own socket, happy days.
for (var i = 0; i < 4; i++)
{
Task.Factory.StartNew(state =>
{
DealerSocket client = null;
if (!clientSocketPerThread.IsValueCreated)
{
client = new DealerSocket();
client.Options.Identity =
Encoding.Unicode.GetBytes(state.ToString());
client.Connect("tcp://127.0.0.1:5556");
client.ReceiveReady += Client_ReceiveReady;
clientSocketPerThread.Value = client;
poller.Add(client);
}
else
{
client = clientSocketPerThread.Value;
}
while (true)
{
var messageToServer = new NetMQMessage();
messageToServer.AppendEmptyFrame();
messageToServer.Append(state.ToString());
Console.WriteLine("======================================");
Console.WriteLine(" OUTGOING MESSAGE TO SERVER ");
Console.WriteLine("======================================");
PrintFrames("Client Sending", messageToServer);
client.SendMultipartMessage(messageToServer);
Thread.Sleep(delay);
}
},
string.Format("client {0}", i),
TaskCreationOptions.LongRunning);
}
// start the poller
poller.RunAsync();
// server loop
for (var i = 0; i < 6; i++)
{
var clientMessage = server.ReceiveMessage();
Console.WriteLine("======================================");
Console.WriteLine(" INCOMING CLIENT MESSAGE FROM CLIENT ");
Console.WriteLine("======================================");
PrintFrames("Server receiving", clientMessage);
if (clientMessage.FrameCount == 3)
{
var clientAddress = clientMessage[0];
var clientOriginalMessage = clientMessage[2].ConvertToString();
var response = string.Format("{0} back from server {1}",
clientOriginalMessage,
DateTime.Now.ToLongTimeString());
var messageToClient = new NetMQMessage();
messageToClient.Append(clientAddress);
messageToClient.AppendEmptyFrame();
messageToClient.Append(response);
server.SendMultipartMessage(messageToClient);
}
}
}
}
}