NetTcpBinding做双工回调与订阅/发布

一：回调代码：

WcfServiceLibrary2：

using System.ServiceModel;


namespace WcfServiceLibrary2
{
    [ServiceContract(CallbackContract = typeof(ICallback))]
    public interface IService1
    {
        [OperationContract(IsOneWay = true)]
        void GetData(string value);
    }

    public interface ICallback
    {

        [OperationContract(IsOneWay = true)]
        void DisplayResult(string result);
    }
}

WcfClient：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.ServiceModel;
using System.Text;
using System.Windows.Forms;
using WcfServiceLibrary2;

namespace WcfClient
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {

            EndpointAddress address = new EndpointAddress("net.tcp://localhost:8773/MyTest");
            NetTcpBinding binding = new NetTcpBinding();
            DuplexChannelFactory<IService1> channelFactory = new DuplexChannelFactory<IService1>(new InstanceContext(new Back()), binding, address);
            var channel = channelFactory.CreateChannel();
            channel.GetData("111");
        }
        public class Back : ICallback
        {
            public void DisplayResult(string result)
            {
                MessageBox.Show(result);
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.Text = "客户端";
        }
    }
}

WcfServer：

using System;
using System.Collections.Generic;
using System.Linq;
using System.ServiceModel;
using System.Text;
using System.Windows.Forms;
using WcfServiceLibrary2;
 
namespace WcfServer
{
    public class Service1 : IService1
    {
        public void GetData(Guid id)
        {
            ICallback call = OperationContext.Current.GetCallbackChannel<ICallback>();
            //call.DisplayResult("回调客户端---"+value);
              WcfServer.Form1 form = Application.OpenForms[0] as WcfServer.Form1;
              form.AddSubscriber(id, call);
        }
    }
}

using System;
using System.ServiceModel;
using System.Windows.Forms;

namespace WcfServer
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.Text = "服务端";
            ServiceHost host = new ServiceHost(typeof(WcfServer.Service1));
            host.Open();
        }

        private void button1_Click(object sender, EventArgs e)
        {

        }     
    }
}

appConfig：

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <system.serviceModel>
        <services>
            <service name="WcfServer.Service1">
                <!--<host>
                    <baseAddresses>
                        <add baseAddress = "http://localhost:8773/Design_Time_Addresses/WcfServiceLibrary2/Service1/" />
                    </baseAddresses>
                </host>-->
                <!-- Service Endpoints -->
                <!-- 除非完全限定，否则地址相对于上面提供的基址-->
                <endpoint address="net.tcp://localhost:8773/MyTest/" binding="netTcpBinding" contract="WcfServiceLibrary2.IService1">
                    <!-- 
              部署时，应移除或替换下列标识元素，以反映
             用来运行所部署服务的标识。移除之后，WCF 将
              自动推断相应标识。
          -->
                    <!--<identity>
                        <dns value="localhost"/>
                    </identity>-->
                </endpoint>
                <!-- Metadata Endpoints -->
                <!-- 元数据交换终结点供相应的服务用于向客户端做自我介绍。 -->
                <!-- 此终结点不使用安全绑定，应在部署前确保其安全或将其移除-->
    
            </service>
        </services>
        <!--<behaviors>
            <serviceBehaviors>
                <behavior>
                    --><!-- 为避免泄漏元数据信息，
          请在部署前将以下值设置为 false --><!--
                    <serviceMetadata httpGetEnabled="False"/>
                    --><!-- 要接收故障异常详细信息以进行调试，
          请将以下值设置为 true。在部署前设置为 false 
          以避免泄漏异常信息 --><!--
                    <serviceDebug includeExceptionDetailInFaults="False" />
                </behavior>
            </serviceBehaviors>
        </behaviors>-->
    </system.serviceModel>
</configuration>

二：发布、订阅（其余代码不变）

wcfServer：

using System;
using System.Collections.Generic;
using System.Linq;
using System.ServiceModel;
using System.Text;
using System.Windows.Forms;
using WcfServiceLibrary2;

namespace WcfServer
{
    public class Service1 : IService1
    {
        public void GetData(Guid id)
        {
            ICallback call = OperationContext.Current.GetCallbackChannel<ICallback>();
            //call.DisplayResult("回调客户端---"+value);
              WcfServer.Form1 form = Application.OpenForms[0] as WcfServer.Form1;
              form.AddSubscriber(id, call);
        }
    }
}

using System;
using System.Collections.Generic;
using System.ServiceModel;
using System.Windows.Forms;
using WcfServiceLibrary2;

namespace WcfServer
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.Text = "服务端";
            ServiceHost host = new ServiceHost(typeof(Service1));
            host.Open();
        }

        Dictionary<Guid, ICallback> dic = new Dictionary<Guid, ICallback>();

        public void AddSubscriber(Guid id, ICallback callback)
        {
            if (!dic.ContainsKey(id))
            {
                dic.Add(id, callback);
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            foreach (KeyValuePair<Guid, ICallback> pair in dic)
            {
                pair.Value.DisplayResult("1");
            }
        }     
    }
}

Iservice1：

using System;
using System.ServiceModel;


namespace WcfServiceLibrary2
{
    [ServiceContract(CallbackContract = typeof(ICallback))]
    public interface IService1
    {
        [OperationContract(IsOneWay = true)]
        void GetData(Guid value);
    }

    public interface ICallback
    {

        [OperationContract(IsOneWay = true)]
        void DisplayResult(string result);
    }
}

WcfClient：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.ServiceModel;
using System.Text;
using System.Windows.Forms;
using WcfServiceLibrary2;

namespace WcfClient
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {

            EndpointAddress address = new EndpointAddress("net.tcp://localhost:8773/MyTest");
            NetTcpBinding binding = new NetTcpBinding();
            DuplexChannelFactory<IService1> channelFactory = new DuplexChannelFactory<IService1>(new InstanceContext(new Back()), binding, address);
            var channel = channelFactory.CreateChannel();
            channel.GetData(new Guid());
        }
        public class Back : ICallback
        {
            public void DisplayResult(string result)
            {
                MessageBox.Show(result);
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.Text = "客户端";
        }
    }
}