WCF从理论到实践(7)

而INormalJob的实现代码如下：

Duplex的交换模式需要现定义Callback的Contract接口，如下：

而服务端的Contract接口为：

Duplex的Contract实现为：

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using Jillzhang.Messaging.Contract;

using System.ServiceModel;

namespace Jillzhang.Messaging.Service
{
    [ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Multiple)]
    public class Job:IJob
    {
        public string Do(string jobName)
        {
            try
            {
                 ICallback callback = OperationContext.Current.GetCallbackChannel<ICallback>();
                 System.Diagnostics.Stopwatch watcher = new System.Diagnostics.Stopwatch();
                 watcher.Start();
                 System.Threading.Thread.Sleep(1000);
                 Console.WriteLine("服务" + AppDomain.CurrentDomain.FriendlyName + "执行任务:" + jobName);
                 watcher.Stop();
                 callback.Done((int)watcher.ElapsedMilliseconds);
                return "成功";
             }
            catch
            {
                return "失败";
             }
         }
     }
}

下面，我们来看一下，如何创建承载服务的应用程序，首先在app.config做如下配置

而Host的代码如下：

而客户端的配置文件，如下：

<?xml version="1.0" encoding="utf-8" ?>

<system.serviceModel>

</netTcpBinding>

</bindings>

<endpoint address="net.tcp://localhost:6987/Service/duplex" binding="netTcpBinding"

bindingConfiguration="netTcpBinding" contract="Jillzhang.Messaging.Contract.IJob"

name="NetTcpBinding">

</identity>

</endpoint>

<endpoint address="net.tcp://localhost:6987/Service/oneway" binding="netTcpBinding"

bindingConfiguration="netTcpBinding" contract="Jillzhang.Messaging.Contract.IOneWayJob"

name="NetTcpBinding">

</identity>

</endpoint>

<endpoint address="net.tcp://localhost:6987/Service/normal" binding="netTcpBinding"

bindingConfiguration="netTcpBinding" contract="Jillzhang.Messaging.Contract.INormalJob"

name="NetTcpBinding">

</identity>

</endpoint>

</client>

</system.serviceModel>

</configuration>

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