WFC的服务单绑定的问题

[Eniak]

正在看 《Essential WFC》 里面有个讲义没有实现，就是第二掌的 ServiceContract ， 就是客户端和服务端实现 Duplex 的这一部分。我明白其中的工作原理，就是代码调试不同，每次建立 ServiceHost 之后，准备 Open 的时候，总是告诉说 两个Endpoint 绑到一起了。

我对些 App.config 不是很熟悉，把代码贴上来，好心人帮我看看吧。另外，我没有吧服务端放到IIS上面，就是点击Debug按钮，程序就自动跑起来的。

namespace Server
{
    class Program
    {
        // 启动服务器
        static void Main(string[] args)
        {
            ServiceHost serviceHost = new ServiceHost(typeof(StockService));//, new Uri("http://localhost:8000/EssentialWCF"));
            //serviceHost.AddServiceEndpoint(typeof(IStockService), new BasicHttpBinding(),"");
            /*
            ServiceMetadataBehavior behavior = new ServiceMetadataBehavior();
            behavior.HttpGetEnabled = true;
            serviceHost.Description.Behaviors.Add(behavior);

            serviceHost.AddServiceEndpoint
                (typeof(IMetadataExchange),
                MetadataExchangeBindings.CreateMexHttpBinding(),
                "mex");
            */
            serviceHost.Open();

            Console.WriteLine("Press <Enter> to terminate. \n\n");
            Console.ReadLine();


            serviceHost.Close();
        }
    }
}

设置文件

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <system.serviceModel>
    <services>
      <service name="Server.StockService" 
               behaviorConfiguration="MEXServiceTypeBehavior">
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8000/EssentialWCF"/>
          </baseAddresses>
        </host>
        <endpoint address="mex"
                  binding="basicHttpBinding"
                  contract="Server.IStockService"/>
        <endpoint address = "mex"
                  binding = "wsDualHttpBinding"
                  contract = "IMetadataExchange"/>
      </service>
    </services>
    
    <behaviors>
      <serviceBehaviors>
        <behavior name="MEXServiceTypeBehavior">
          <serviceMetadata httpGetEnabled="true"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    
  </system.serviceModel>
</configuration>

一些用到的类的代码

/*********************************************************************************/
namespace Server
{
    class StockService : IStockService
    {
        public static Hashtable workerTable = new Hashtable();

        public double GetPrice(string ticker)
        {
            return 94.58;
        }

        public void RegisterForUpdates(string ticker)
        {
            Worker w = null;

            if (!workerTable.ContainsKey(ticker))
            {
                w = new Worker();
                w.ticker = ticker;
                w.workerProcess = new Update();
                w.workerProcess.ticker = ticker;
                workerTable[ticker] = w;

                Thread t = new Thread( new ThreadStart(w.workerProcess.SendUpdateToClient));
                t.IsBackground = true;
                t.Start();
            }

            w = (Worker)workerTable[ticker];
            IClientCallBack c = OperationContext.Current.GetCallbackChannel<IClientCallBack>();
            lock (w.workerProcess.callbacks)
                w.workerProcess.callbacks.Add(c);
        }
    }
}


/*********************************************************************************/
namespace Server
{
    [ServiceContract(CallbackContract = typeof(IClientCallBack))]
    public interface IStockService
    {
        [OperationContract]
        double GetPrice(string ticker);
    }

    public interface IClientCallBack
    {
        [OperationContract(IsOneWay = true)]
        void PriceUpdate(string ticker, double price);
    }
}


/*********************************************************************************/
namespace Server
{
    public class Update
    {
        public string ticker;
        public List<IClientCallBack> callbacks = new List<IClientCallBack>();

        public void SendUpdateToClient()
        {
            Random w = new Random();
            Random p = new Random();

            while(true)
            {
                Thread.Sleep(w.Next(5000));

                lock(callbacks)
                    foreach (IClientCallBack c in callbacks)
                    {
                        try
                        {
                            c.PriceUpdate("msft", 100.00 + p.NextDouble());
                        }
                        catch (Exception ex)
                        {
                            Console.WriteLine("Error sending cache to client:{0}", ex.Message);
                        }
                    }
            }
        }
    }
}


/*********************************************************************************/
namespace Server
{
    public class Worker
    {
        public string ticker;
        public Update workerProcess;
    }
}

[cszcgdn]

好 啊