服務代理凍結應用程序

Question

這是我遇到的問題，我完全無能爲力。我已經定義了一個IWorkerServiceContract類，如下所示：

[ServiceContract] 
public interface IWorkerServiceContract 
{ 
    [OperationContract] 
    int Test(int test); 
} 

沒什麼特別的，我只是想測試連通性。這裏是我的服務類：

class WorkerService : IWorkerServiceContract 
{ 
    public static ILogger Logger { get; set; } 

    public int Test(int test) 
    { 
     return test + 1; 
    } 

    public static ServiceHost Listen(Uri baseAddress) 
    { 
     ServiceHost host = new ServiceHost(typeof(WorkerService), baseAddress); 

     try 
     { 
      host.Open(); 
      Logger.WriteLine("Listening at address: " + baseAddress.ToString()); 
     } 

     catch (Exception e) 
     { 
      Logger.WriteLine("An exception was thrown, reason: {0}", e.Message); 
     } 

     return host; 
    } 
} 

的Logger對象由初始化類實例化，它基本上記錄到（）與AllocConsole分配的控制檯。當我調用Listen（）時，一切正常，我可以通過WCF測試客戶端連接並遠程調用Test（）方法。雖然，當我定義代理：

public partial class WorkerProxy : ClientBase<IWorkerServiceContract>,    
            IWorkerServiceContract 
{ 
    public WorkerProxy(EndpointAddress remoteAddress) : 
     base("workerEndpoint", remoteAddress) 
    { } 

    public WorkerProxy(Uri remoteAddress) : 
     base("workerEndpoint", new EndpointAddress(remoteAddress)) 
    { } 

    public WorkerProxy(string remoteAddress) : 
     base("workerEndpoint", new EndpointAddress(remoteAddress)) 
    { } 

    public int Test(int test) 
    { 
     return base.Channel.Test(test); 
    } 
} 

，並使用下面的代碼：

WorkerService.Listen("net.tcp://localhost:19000/dcalc"); 
WorkerProxy wp = new WorkerProxy("net.tcp://localhost:19000/dcalc"); 
wp.Test(0); 

申請凍結！這是我的app.config文件：

<?xml version="1.0"?> 
<configuration> 
    <system.serviceModel> 
    <bindings> 
     <wsHttpBinding> 
     <binding messageEncoding="Mtom" maxReceivedMessageSize="10485760"> 
      <readerQuotas maxArrayLength="10485760" /> 
     </binding> 
     </wsHttpBinding> 
     <netTcpBinding> 
     <binding maxReceivedMessageSize="10485760"> 
      <readerQuotas maxArrayLength="10485760" /> 
     </binding> 
     </netTcpBinding> 
    </bindings> 
    <services> 
     <service name="DCalc.Manager.ManagerService" behaviorConfiguration="managerServiceBehavior"> 
     <endpoint address="" binding="wsHttpBinding" contract="DCalc.Common.IManagerServiceContract"/> 
     <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/> 
     </service> 
     <service name="DCalc.Worker.WorkerService" behaviorConfiguration="workerServiceBehavior"> 
     <endpoint address="" binding="netTcpBinding" contract="DCalc.Common.IWorkerServiceContract"/> 
     <endpoint address="mex" binding="mexTcpBinding" contract="IMetadataExchange"/> 
     </service> 
    </services> 
    <client> 
     <endpoint address="" binding="netTcpBinding" contract="DCalc.Common.IWorkerServiceContract" name="workerEndpoint" /> 
     <endpoint address="" binding="wsHttpBinding" contract="DCalc.Common.IManagerServiceContract" name="managerEndpoint" /> 
    </client> 
    <behaviors> 
     <serviceBehaviors> 
     <behavior name="managerServiceBehavior"> 
      <serviceMetadata httpGetEnabled="true" policyVersion="Policy15"/> 
      <serviceDebug includeExceptionDetailInFaults="true" /> 
     </behavior> 
     <behavior name="workerServiceBehavior"> 
      <serviceMetadata policyVersion="Policy15"/> 
      <serviceDebug includeExceptionDetailInFaults="true" /> 
     </behavior> 
     </serviceBehaviors> 
    </behaviors> 
    </system.serviceModel> 
</configuration> 

我不明白的是，你可以看到，我已經定義了一個ManagerService，應用程序可以連接到它沒有任何問題。它似乎不是一個協議問題，我得到了與wsHttpBinding相同的結果。

我在做什麼錯？

Answer 1

由於線程死鎖，您看到您的應用程序的原因被凍結，這意味着當執行一部分代碼/訪問公共資源時，兩個線程互相鎖定。

在這種情況下：

在客戶端，當工人代理線程調用Test(0)，它會等待響應回來。

在「服務器端」，服務器線程同時嘗試控制並返回結果。由於兩個線程之間存在線程關聯，服務器線程將等待工作線程完成，但工作線程正在等待響應，因此它們都不能繼續，並且發生死鎖。