static void Main(string[] args)
{
// 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 = 3000; // 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 (int i = 0; i < 3; 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("======================================");
client.SendMultipartMessage(messageToServer);
Thread.Sleep(delay);
}
}, string.Format("client {0}", i), TaskCreationOptions.LongRunning);
}
// start the poller
poller.RunAsync();
// server loop
while (true)
{
var clientMessage = server.ReceiveMultipartMessage();
var key = server.ReceiveRoutingKey();
Console.WriteLine("======================================");
Console.WriteLine(" INCOMING CLIENT MESSAGE FROM CLIENT ");
Console.WriteLine("======================================");
if (clientMessage.FrameCount == 3)
{
var clientAddress = clientMessage[0];
var clientOriginalMessage = clientMessage[2].ConvertToString();
Console.WriteLine($"received message from client: {clientMessage[0].ConvertToString()}, {clientMessage[1].ConvertToString()}, {clientMessage[2].ConvertToString()}");
string 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);
}
}
}
}