WCF服务器自动连接到客户端当连接被中止

问题描述：

我在我的WindowsApplication中使用WCF服务...当我运行应用程序服务器和客户端时，服务器在几分钟内断开连接....应该如何我自动重新连接客户端连接时被中止....WCF服务器自动连接到客户端当连接被中止

这是我的客户端代码：

public void connecttoserver() 
    { 
     D: 
     try 
     { 

     EndpointAddress ea = new EndpointAddress(@"net.tcp://10.0.3.33:2222/ClsPCMain"); 
     EndpointAddress ea = new EndpointAddress(StrAddress); 
     NetTcpBinding binding = new NetTcpBinding(SecurityMode.None, false); 

     binding.MaxBufferPoolSize = Int32.MaxValue; 
     binding.MaxReceivedMessageSize = Int32.MaxValue; 
     binding.PortSharingEnabled = true; 
     binding.ReceiveTimeout = TimeSpan.MaxValue; 
     binding.SendTimeout = TimeSpan.MaxValue; 
     binding.OpenTimeout = TimeSpan.MaxValue; 
     binding.CloseTimeout = TimeSpan.MaxValue; 
     binding.MaxReceivedMessageSize = Int32.MaxValue; 
     binding.MaxBufferPoolSize = Int32.MaxValue; 
     binding.MaxConnections = Int16.MaxValue; 
     binding.ReaderQuotas.MaxArrayLength = Int32.MaxValue; 
     binding.ReaderQuotas.MaxBytesPerRead = Int32.MaxValue; 
     binding.ReaderQuotas.MaxDepth = Int32.MaxValue; 
     binding.ReaderQuotas.MaxNameTableCharCount = Int32.MaxValue; 
     binding.ReaderQuotas.MaxStringContentLength = Int32.MaxValue; 
     binding.Security.Mode = SecurityMode.None; 
     ChannelFactory<InterfaceClass.IService> Client = new ChannelFactory<InterfaceClass.IService>(binding,ea); 

      InterfaceClass.IService serviceobj = Client.CreateChannel(ea); 


      clsStatus.connectstatus = false; 






      ClsPC objclsPc = serviceobj.PCInfoMethod(Environment.UserName, Environment.UserDomainName, Dns.GetHostName(), Dns.GetHostEntry(Dns.GetHostName()).AddressList[0].ToString()); 

      if (objclsPc.imageid == 1) 
      { 


       clsStatus.FullSizeImage = true; 
       clsStatus.ThumbnailImage = false; 
      } 
      else 
      { 
       clsStatus.ThumbnailImage = true; 
       clsStatus.FullSizeImage = false; 

      } 
     Client.Close(); 
     Client=null; 
      //serviceobj = null; 


     } 

     catch (Exception ex) 
     { 
      logobj.Write(ex);

}}

这是我的服务器代码：

public clsHostService() 
    { 

     string StrAddress = File.ReadAllText(AppDomain.CurrentDomain.BaseDirectory + "url2.txt"); 
     ServiceHost host = new ServiceHost(typeof(clsService)); 
     NetTcpBinding binding = new NetTcpBinding(SecurityMode.None, false); 
     ServiceEndpoint endpointinfo = host.AddServiceEndpoint(typeof(IService), binding, StrAddress); 

     endpointinfo.Binding.CloseTimeout = TimeSpan.MaxValue; 
     endpointinfo.Binding.OpenTimeout = TimeSpan.MaxValue; 
     endpointinfo.Binding.ReceiveTimeout = TimeSpan.MaxValue; 
     endpointinfo.Binding.SendTimeout = TimeSpan.MaxValue; 



     XmlDictionaryReaderQuotas BindingQuota = binding.ReaderQuotas; 
     BindingQuota.MaxArrayLength = Int32.MaxValue; 
     BindingQuota.MaxBytesPerRead = Int32.MaxValue; 
     BindingQuota.MaxDepth = Int32.MaxValue; 

     binding.MaxConnections = Int16.MaxValue; 
     binding.MaxBufferPoolSize = Int32.MaxValue; 
     binding.MaxBufferSize = Int32.MaxValue; 
     binding.MaxReceivedMessageSize = Int32.MaxValue; 
     binding.CloseTimeout = TimeSpan.MaxValue; 
     binding.OpenTimeout = TimeSpan.MaxValue; 
     binding.ReceiveTimeout = TimeSpan.MaxValue; 
     binding.SendTimeout = TimeSpan.MaxValue; 

     ServiceThrottlingBehavior throttlingBehavior =new ServiceThrottlingBehavior(); 
     throttlingBehavior.MaxConcurrentCalls = Int32.MaxValue; 
     throttlingBehavior.MaxConcurrentInstances = Int32.MaxValue; 
     throttlingBehavior.MaxConcurrentSessions = Int32.MaxValue; 
     host.Description.Behaviors.Add(throttlingBehavior); 




     host.Open(); 
     Console.WriteLine("Server Started"); 

     Console.ReadLine(); 

    }

现在我该如何自动连接到客户端当服务器切断连接？任何人告诉我这个问题的解决方案... 在此先感谢.....

答

我不完全理解你的问题，我怕 - 你的Winforms应用程序托管的服务，还是它客户端调用WCF服务？

WCF通常不会使用客户端和服务器之间具有恒定连接的概念。

客户端构建一个客户端代理，在该客户端代理上调用服务器公开的方法。基本上，每个呼叫都独立于所有其他呼叫 - 在呼叫期间，只有客户端和服务器之间存在连接。连接不是总是上去 - 只有在实际发生呼叫时才有。

所以我不完全明白你想要“重新连接” - 首先并不总是开启连接。

可能发生的情况是，如果在服务器端发生异常并且未被正确捕获和处理，则客户端代理可能会失效。在WCF术语中，客户端和服务器之间的“通道”已经“故障”，例如，已经变得无法使用。如果您使用处于故障状态的客户端代理再次调用服务器，则会收到客户端异常。

您可以拨打电话与此代码之前检查在客户端代理有故障的信道状态：

if(client.State == CommunicationState.Faulted) 
{ 
    client = new YourServiceClient();    
}

如果通道确实出现故障，则需要再次重新创建代理你应该恢复营业。

答

我用的是这样的：

//Somewhere in the main 
ConfigureWcf(); 
ConnectToServer(); 
//... 

void ConnectToServer() 
{ 
    myService = new ServiceReference.ServiceClient(context); 
    myService.Open(); 
    myService.InnerChannel.UnknownMessageReceived += InnerChannel_UnknownMessageReceived; 
    myService.InnerChannel.Closed += InnerChannel_Closed; 
} 

void StartConnecting() 
{ 
    //use 5 attempts to connect to server 
    ConnectToServer(); 
} 

void InnerChannel_Closing(object sender, EventArgs e) 
{ 
    //Connection to server closed! 
    //Write to log 
    StartConnecting(); 
}

WCF服务器自动连接到客户端当连接被中止

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