Comment puis-je héberger le service WCF dans le service Windows?

Question

J'essaie d'héberger WCF serviec dans le service Windows géré. Fondamentalement j'ai 1 solution CustomersWCFLibrary qui contient 3 projets.

1) CustomersWCFLibrary: -

Ceci est mon app.config: -

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

    <configSections> 
    </configSections> 
    <connectionStrings> 
    <add name="CustomersWCFLibrary.Properties.Settings.NorthWindConnectionString" 
     connectionString="Data Source=localhost;Initial Catalog=Northwind;Integrated Security=True" 
     providerName="System.Data.SqlClient" /> 
    </connectionStrings> 
    <system.web> 
    <compilation debug="true" /> 
    </system.web> 
    <!-- When deploying the service library project, the content of the config file must be added to the host's 
    app.config file. System.Configuration does not support config files for libraries. --> 
    <system.serviceModel> 

    <services> 
     <service name="CustomersWCFLibrary.CustomersService" behaviorConfiguration="ServiceBehavior"> 
     <endpoint address="net.tcp://localhost:9000/CustomersService" binding="netTcpBinding" contract="CustomersWCFLibrary.ICustomersService"> 
      <identity> 
      <dns value="localhost" /> 
      </identity> 
     </endpoint> 
     <endpoint address="mex" binding="mexTcpBinding" contract="IMetadataExchange" /> 
     <host> 
      <baseAddresses> 
      <add baseAddress="net.tcp://localhost:9001/" /> 
      </baseAddresses> 
     </host> 
     </service> 
    </services> 
    <behaviors> 
     <serviceBehaviors> 
     <behavior name="ServiceBehavior"> 
      <!-- To avoid disclosing metadata information, 
      set the value below to false and remove the metadata endpoint above before deployment --> 
      <serviceMetadata httpGetEnabled="false"/> 
      <!-- To receive exception details in faults for debugging purposes, 
      set the value below to true. Set to false before deployment 
      to avoid disclosing exception information --> 
      <serviceDebug includeExceptionDetailInFaults="False" /> 
     </behavior> 
     </serviceBehaviors> 
    </behaviors> 
    </system.serviceModel> 

</configuration> 

Ma classe: -

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Runtime.Serialization; 
using System.ServiceModel; 
using System.Text; 
using System.Data; 
using System.Data.SqlClient; 
using System.Collections; 

namespace CustomersWCFLibrary 
{ 
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the class name "Service1" in both code and config file together. 
    public class CustomersService : ICustomersService 
    { 
     public List<Customers> GetAllCustomers() 
     { 
      List<Customers> customersList = new List<Customers>(); 
      using (SqlConnection objSqlConnection = new SqlConnection(Properties.Settings.Default.NorthWindConnectionString)) 
      { 
       objSqlConnection.Open(); 
       SqlCommand objSqlCommand = new SqlCommand("Select CustomerID, ContactName, ContactTitle,CompanyName,Address from Customers",objSqlConnection); 
       SqlDataReader objSqlDataReader = objSqlCommand.ExecuteReader(); 

       while (objSqlDataReader.Read()) 
       { 
        string customerID = objSqlDataReader.GetString(0); 
        string contactName = objSqlDataReader.GetString(1); 
        string contactTitle = objSqlDataReader.GetString(2); 
        string companyName = objSqlDataReader.GetString(3); 
        string Address = objSqlDataReader.GetString(4); 
        Customers objCustomers = new Customers(); 
        objCustomers.CustomerId = customerID; 
        objCustomers.ContactName = contactName; 
        objCustomers.ContactTitle = contactTitle; 
        objCustomers.CompanyName = companyName; 
        objCustomers.Address = Address; 

        customersList.Add(objCustomers); 
       } 
      } 
      return customersList; 
     } 
    } 
} 

Mon contrat: -

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Runtime.Serialization; 
using System.ServiceModel; 
using System.Text; 

namespace CustomersWCFLibrary 
{ 
    // NOTE: You can use the "Rename" command on the "Refactor" menu to change the interface name "IService1" in both code and config file together. 
    [ServiceContract] 
    public interface ICustomersService 
    { 
     [OperationContract] 
     List<Customers> GetAllCustomers(); 


     // TODO: Add your service operations here 
    } 

    // Use a data contract as illustrated in the sample below to add composite types to service operations 
    [DataContract] 
    public class Customers 
    { 

     [DataMember] 
     public string CustomerId 
     { get; set; } 

     [DataMember] 
     public string ContactName 
     {get; set;} 

     [DataMember] 
     public string ContactTitle 
     {get; set;} 

     [DataMember] 
     public string CompanyName 
     {get; set;} 

     [DataMember] 
     public string Address 
     {get; set;} 


    } 
} 

2) CustomersWindowsService

App.config: -

<?xml version="1.0" encoding="utf-8"?> 
<configuration> 
    <system.serviceModel> 
     <services> 
      <service name="CustomersWCFLibrary.CustomersService"> 

       <endpoint address="net.tcp://localhost:9000/CustomersService" 
          binding="netTcpBinding" 
        bindingConfiguration="" name="CustomersService_Tcp" contract="CustomersWCFLibrary.ICustomersService" /> 

      </service> 
     </services> 
    </system.serviceModel> 
</configuration> 

Ceci est mon code de service Windows: -

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Diagnostics; 
using System.Linq; 
using System.ServiceProcess; 
using System.Text; 
using System.ServiceModel; 

namespace CustomersWindowsService 
{ 
    public partial class CustomersServiceWinService : ServiceBase 
    { 

     private ServiceHost host = null; 

     public CustomersServiceWinService() 
     { 
      InitializeComponent(); 
     } 

     protected override void OnStart(string[] args) 
     { 

       host = new ServiceHost(typeof(CustomersWCFLibrary.CustomersService)); 
       host.Open(); 

     } 

     protected override void OnStop() 
     { 
      host.Close(); 
     } 
    } 
} 

3) Mon application console WCFCustomersTest

App.Config: -

<?xml version="1.0" encoding="utf-8"?> 
<configuration> 
    <system.serviceModel> 
     <bindings /> 
     <client> 
      <endpoint address="net.tcp://localhost:9000/CustomersService" 
       binding="netTcpBinding" bindingConfiguration="" contract="CustomersWCFLibrary.ICustomersService" 
       name="CustomersService_Tcp" kind="" endpointConfiguration="" /> 
     </client> 
    </system.serviceModel> 
</configuration> 

Program.cs

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.ServiceModel; 


namespace WCFCustomersTest 
{ 
    class Program 
    { 
     static void Main(string[] args) 
     { 
      var channel = new ChannelFactory<CustomersWCFLibrary.ICustomersService>("CustomersService_Tcp").CreateChannel(); 
      List<CustomersWCFLibrary.Customers> objList = channel.GetAllCustomers(); 
      Console.Write(objList.Count); 
      Console.Read(); 

     } 
    } 
} 

Ma console d'application contient une référence à ma WCFClassLibrary (1er projet).

1) Si je ne démarre pas mon service Windows et l'exécute dans VS 2010, j'obtiens la bonne sortie. Mais si je lance mon application de l'extérieur du VS, je reçois une exception étrange très longue.

2) Si je commence mon service Windows et je tente de lancer mon application à partir de VS ou à l'extérieur VS je reçois cette erreur: -

System.ServiceModel.FaultException was unhandled 
    Message=The server was unable to process the request due to an internal error. For more information about the error, either turn on IncludeExceptionDetailInFaults (either from ServiceBehaviorAttribute or from the <serviceDebug> configuration behavior) on the server in order to send the exception information back to the client, or turn on tracing as per the Microsoft .NET Framework 3.0 SDK documentation and inspect the server trace logs. 
    Source=mscorlib 
    Action=http://schemas.microsoft.com/net/2005/12/windowscommunicationfoundation/dispatcher/fault 
    StackTrace: 
    Server stack trace: 
     at System.ServiceModel.Channels.ServiceChannel.ThrowIfFaultUnderstood(Message reply, MessageFault fault, String action, MessageVersion version, FaultConverter faultConverter) 
     at System.ServiceModel.Channels.ServiceChannel.HandleReply(ProxyOperationRuntime operation, ProxyRpc& rpc) 
     at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout) 
     at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation) 
     at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message) 
    Exception rethrown at [0]: 
     at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) 
     at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) 
     at CustomersWCFLibrary.ICustomersService.GetAllCustomers() 
     at WCFCustomersTest.Program.Main(String[] args) in C:\Users\abc\documents\visual studio 2010\Projects\CustomersWCFLibrary\WCFCustomersTest\Program.cs:line 15 
     at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args) 
     at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) 
     at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() 
     at System.Threading.ThreadHelper.ThreadStart_Context(Object state) 
     at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx) 
     at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) 
     at System.Threading.ThreadHelper.ThreadStart() 
    InnerException: 

Je suis en train de résoudre cette erreur depuis 3 heures sans Succès.

Merci à l'avance :)

Answer 1

je suggère deux choses pour troubleshoting la question,

1. Activer includeExceptionDetailInFaults, pour obtenir plus de détails sur la réponse.
2. Activez le traçage WCF, car vous trouverez probablement plus de détails dans la trace.

Je serai en mesure d'aider plus si je peux voir plus de détails sur l'erreur. Cette erreur que vous avez postée là-bas est générique.

Remerciements Pablo.

Answer 2

Tun sur les exceptions détails ici: < serviceDebug includeExceptionDetailInFaults = "true"/>

ou débogage à venir demande fenêtres géré côté service pour voir ce qui se passe là-faute.