C# Server, Client, Duplex mode

Question

Hello, I'm looking for a good example to exchange this between server and client.

Both should be able to make unsolicited inquiries. Duplex operation.

Who can help me, who can post a good example?

IP="127.0.0.1"  Port="8029"  Timeout=5000

<root>
   <message_request id="2123" type="process" />
</root>

<root>
   <message_response id="2123" type="coloring of the product 2123" />
</root>

Reconnect on disconnect Error message after 5 failed attempts

Thanks for your help!

Answer 1

here is an example of a basic duplex communication setup using the WCF (Windows Communication Foundation) framework in C#:

Server-side:

c#

using System;
using System.ServiceModel;
[ServiceContract(CallbackContract = typeof(IServerCallback))]
interface IServer
{
    [OperationContract]
    void ProcessRequest(string request);
}
interface IServerCallback
{
    [OperationContract]
    void SendResponse(string response);
}
class Server : IServer
{
    public void ProcessRequest(string request)
    {
        // Do some processing on the request
        string response = "Coloring of the product 2123";
        // Send the response back to the client
        var callback = OperationContext.Current.GetCallbackChannel<IServerCallback>();
        callback.SendResponse(response);
    }
}
class Program
{
    static void Main(string[] args)
    {
        // Set up the server
        var binding = new NetTcpBinding();
        var address = new Uri("net.tcp://127.0.0.1:8029/Server");
        var host = new ServiceHost(typeof(Server));
        host.AddServiceEndpoint(typeof(IServer), binding, address);
        host.Open();
        Console.WriteLine("Server running...");
        Console.ReadLine();
    }
}

Client-side:

C#

using System;
using System.ServiceModel;

[CallbackBehavior(UseSynchronizationContext = false)]
class Client : IServerCallback
{
    public void SendResponse(string response)
    {
        // Handle the response
        Console.WriteLine("Response: " + response);
    }

    static void Main(string[] args)
    {
        // Set up the client
        var binding = new NetTcpBinding();
        var address = new Uri("net.tcp://127.0.0.1:8029/Server");
        var factory = new DuplexChannelFactory<IServer>(new Client(), binding, address);
        var client = factory.CreateChannel();

        // Send a request to the server
        client.ProcessRequest("Process request for product 2123");

        Console.ReadLine();
    }
}