[英]How to consume duplex wcf service in Windows Universal App
如何在Windows通用應用程序中使用雙工合同來使用wcf服務?
我正在使用PlatformNotSupportedExcetpion: Operation is not supported on this platform.
嘗試在Windows Universal App中使用雙面wcf服務時出現運行時異常,目標是Windows 10(10.0; Build 10240)
根據msdn,它支持API。
如果不可能,我應該如何進行我的方案? 我有兩個應用程序(控制台和Windows通用xaml應用程序)在同一台機器上運行,我需要雙向通信。
我有創建服務主機的clasic .net 4.6控制台應用程序:
var host = new ServiceHost(typeof(MyService), new Uri("net.tcp://localhost:8008/MyService"));
var binding = new NetTcpBinding(); //I've also tried net http binding
binding.Security.Mode = SecurityMode.None;
host.Description.Behaviors.Add(new ServiceMetadataBehavior());
host.AddServiceEndpoint(ServiceMetadataBehavior.MexContractName,
MetadataExchangeBindings.CreateMexTcpBinding(),
"mex");
host.AddServiceEndpoint(typeof(IMyService), binding, "");
host.Open();
服務合約:
[ServiceContract(CallbackContract = typeof(IMyServiceCallback))]
public interface IMyService
{
[OperationContract(IsOneWay = true)]
void Initialize();
}
public interface IMyServiceCallback
{
[OperationContract(IsOneWay = true)]
void OnFrame(int i);
}
我已經通過“添加服務引用”對話框以及UWP應用程序中的NetHttpBinding
和NetTcpBinding
同時嘗試了ChannelFactory和生成的wcf客戶端。
當我嘗試創建wcf客戶端的實例時,它會拋出PlatformNotSupportedExcetpion。
來源:System.Private.ServiceModel
堆棧跟蹤:
at System.ServiceModel.ReflectionExtensions.GetInterfaceMap(Type type, Type interfaceType)
at System.ServiceModel.Description.TypeLoader.GetIOperationBehaviorAttributesFromType(OperationDescription opDesc, Type targetIface, Type implType)
at System.ServiceModel.Description.TypeLoader.<>c__DisplayClass8.<AddBehaviorsFromImplementationType>b__10(Type currentType, KeyedByTypeCollection`1 behaviors)
at System.ServiceModel.Description.TypeLoader.AddBehaviorsAtOneScope[IBehavior,TBehaviorCollection](Type type, TBehaviorCollection descriptionBehaviors, ServiceInheritanceCallback`2 callback)
at System.ServiceModel.Description.TypeLoader.AddBehaviorsFromImplementationType(ServiceEndpoint serviceEndpoint, Type implementationType)
at System.ServiceModel.ChannelFactory`1.ReflectOnCallbackInstance(ServiceEndpoint endpoint)
at System.ServiceModel.ChannelFactory`1.CreateDescription()
at System.ServiceModel.ChannelFactory.InitializeEndpoint(Binding binding, EndpointAddress address)
at System.ServiceModel.DuplexChannelFactory`1..ctor(Object callbackObject, Binding binding, EndpointAddress remoteAddress)
at System.ServiceModel.ClientBase`1..ctor(InstanceContext callbackInstance, Binding binding, EndpointAddress remoteAddress)
at System.ServiceModel.DuplexClientBase`1..ctor(InstanceContext callbackInstance, Binding binding, EndpointAddress remoteAddress)
at App1.ServiceReference1.MyServiceClientBase..ctor(InstanceContext callbackInstance)
at App1.ServiceReference1.MyServiceClient..ctor(MyServiceClientCallback callbackImpl)
at App1.ServiceReference1.MyServiceClient..ctor()
at App1.MainPage.<button_Click>d__1.MoveNext()
作為.NET Core 1.0的一部分,WCF的穩定版本於上個月發布。 通過在UWP項目的project.json文件中引用5.2.2版本的Microsoft.NETCore.UniversalWindowsPlatform包,現在可以在Windows Universal Apps中支持雙工和許多其他WCF功能 。
即使在10580版本(最新的.NETCore v5.1.0)中也不支持雙工方案。
有一個錯誤報告了離線GitHub關於WCF雙工實現中錯誤使用反射的問題。 在.net核心的最新版本中修復了此錯誤,您可以在Nuget gallery中包含單個包 。 但是,此程序包要求您還包括System.Runtime和System.Threading的預發布版本。
希望能幫助到你,
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