AddServiceEndpoint throws键是否为空？

Question

使用ServiceHost.AddServiceEndpoint添加自定义ProtoEndpointBehavior时,我收到以下异常:

System.ArgumentNullException:值不能为null.参数名称:System.Collections.Generic.Dictionary上的键2.FindEntry(TKey key) at System.Collections.Generic.Dictionary2.ContainsKey(TKey键)位于System.ServiceModel.ServiceHostBase.ImplementedContractsContractResolver.ResolveContract(String contractName),位于System的System.ServiceModel.ServiceHostBase.ServiceAndBehaviorsContractResolver.ResolveContract(String contractName).位于My.Service.Business的System.ServiceModel.ServiceHostBase.AddServiceEndpoint(ServiceEndpoint端点)的System.ServiceModel.Description.ConfigLoader.LookupContract(String contractName,String serviceName)中的ServiceModel.Description.ConfigLoader.LookupContractForStandardEndpoint(String contractName,String serviceName). C:\ My\Produkter\My Utveckling\Solution\My.Service.Business\ServiceHandler.cs中的ServiceHandler.StartService(类型serviceType,String uri,SecureConnectionSettings secureConnectionSettings):第150行

这是代码的样子:

ServiceHost serviceHost = null;
Console.WriteLine("Creating service " + serviceType.FullName);
serviceHost = new MyServiceHost(serviceType, new Uri(uri));

var endPointAddress = "";

HttpBindingBase binding = null;
if (secureConnectionSettings != null && secureConnectionSettings.Enabled)
{
    Console.WriteLine("Setting certificates");
    X509Store store = new X509Store(secureConnectionSettings.CertificateStore, secureConnectionSettings.CertificateLocation);
    store.Open(OpenFlags.ReadOnly);
    X509Certificate2Collection certs = store.Certificates.Find(X509FindType.FindByThumbprint, secureConnectionSettings.Thumbprint, true);
    store.Close();

    if (certs.Count > 0)
        serviceHost.Credentials.ServiceCertificate.SetCertificate(secureConnectionSettings.CertificateLocation,
                                                                secureConnectionSettings.CertificateStore,
                                                                X509FindType.FindByThumbprint,
                                                                secureConnectionSettings.Thumbprint);
    else
        throw new Exception("Could not finde certificate with thumbprint " + secureConnectionSettings.Thumbprint);

    endPointAddress = uri + "/BinaryHttpsProto";
    binding = CreateNetHttpsBinding(secureConnectionSettings);
}
else
{
    endPointAddress = uri + "/BinaryHttpProto";
    binding = CreateNetHttpBinding();
}

var endpoint = new System.ServiceModel.Description.ServiceEndpoint(new System.ServiceModel.Description.ContractDescription(typeof(IMyClientService).FullName), 
    binding, 
    new EndpointAddress(endPointAddress));

endpoint.EndpointBehaviors.Add(new ProtoBuf.ServiceModel.ProtoEndpointBehavior());
serviceHost.AddServiceEndpoint(endpoint);

Console.WriteLine("Starting service...");
serviceHost.Open();
Console.WriteLine("Service started successfully (" + uri + ")");
return serviceHost;

我用这个在配置文件中设置这个:

  <endpointBehaviors>
    <behavior name="protoEndpointBehavior">
      <protobuf />
    </behavior>
  </endpointBehaviors>

现在我需要在代码中添加它.

怎么了？

Answer 1

这是一个已知的错误,它有解决方法.

获取ContractDescription的实例时,请使用静态方法ContractDescription.GetContract(Type)而不是直接的ContractDescription()构造函数:

var endpoint = new System.ServiceModel.Description.ServiceEndpoint(System.ServiceModel.Description.ContractDescription.GetContract(typeof(IMyClientService)), 
    binding, 
    new EndpointAddress(endPointAddress));

我能够重现你的问题,这个解决方法对我有用.