.Net Core 上的 WsHttpBinding

Question

我正在将 .Net 4.x 项目迁移到 .Net Core 3.1。该项目严重依赖SOAP Web 服务。由于.Net Core不支持基于配置的WCF服务消费，我通过代码调用服务。当前项目使用ws2007HttpBinding 绑定。

我的问题是ws2007HttpBinding 在.Net Core 中并不正式存在。除了HttpBinding、HttpsBinding 和CustomBinding，我别无选择。我用不同的配置尝试了所有这些，但每次都遇到错误。有时它抱怨https 方案（我正在使用的服务是https），有时它说它已经预料到text/xml 但没有看到它，这可能是双方使用不同的SOAP 协议的结果，并且有时我只是收到超时错误。

在我最后一次尝试中，我安装了 Microsoft.NETCore.Platforms 3.1.2 和 System.ServiceModel.Http 4.7.0 以及更高版本的 4.8.0-preview3.20412.3。后者实现了WsHttpBinding 和Ws2007HttpBinding。但是，两者都不起作用。这次我得到了错误：

System.NotSupportedException：不支持指定的方法。

非常感谢任何解决方案或建议。

这是堆栈跟踪和部分代码：

System.AggregateException: One or more errors occurred. (Specified method is not supported.)
 ---> System.NotSupportedException: Specified method is not supported.
   at System.ServiceModel.MessageSecurityOverHttp.CreateSecurityBindingElement(Boolean isSecureTransportMode, Boolean isReliableSession, MessageSecurityVersion version)
   at System.ServiceModel.WSHttpSecurity.CreateMessageSecurity(Boolean isReliableSessionEnabled, MessageSecurityVersion version)
   at System.ServiceModel.WSHttpBinding.CreateMessageSecurity()
   at System.ServiceModel.WSHttpBindingBase.CreateBindingElements()
   at System.ServiceModel.WSHttpBinding.CreateBindingElements()
   at System.ServiceModel.Channels.Binding.EnsureInvariants(String contractName)
   at System.ServiceModel.Description.ServiceEndpoint.EnsureInvariants()
   at System.ServiceModel.Channels.ServiceChannelFactory.BuildChannelFactory(ServiceEndpoint serviceEndpoint, Boolean useActiveAutoClose)
   at System.ServiceModel.ChannelFactory.CreateFactory()
   at System.ServiceModel.ChannelFactory.OnOpening()
   at System.ServiceModel.Channels.CommunicationObject.System.ServiceModel.IAsyncCommunicationObject.OpenAsync(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.OpenAsyncInternal(TimeSpan timeout)
   at System.Runtime.TaskHelpers.WaitForCompletion(Task task)
   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Open()
   at System.ServiceModel.ChannelFactory.EnsureOpened()
   at System.ServiceModel.ChannelFactory`1.CreateChannel(EndpointAddress address, Uri via)
   at System.ServiceModel.ChannelFactory`1.CreateChannel()
   at System.ServiceModel.ClientBase`1.CreateChannel()
   at System.ServiceModel.ClientBase`1.CreateChannelInternal()
   at System.ServiceModel.ClientBase`1.get_Channel()
   at client.Inquiry_DataAsync(String NationalCode) in C:\Users\Reference.cs:line 5577
   at class1.<>c__DisplayClass13_0.<Inquiry_Data>b__0() in C:\Users\Code.cs:line 349
   at System.Threading.Tasks.Task`1.InnerInvoke()
   at System.Threading.Tasks.Task.<>c.<.cctor>b__274_0(Object obj)
   at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location where exception was thrown ---
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
   at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification

代码：

        PermissiveCertificatePolicy.Enact("*");

        var binding = new WSHttpBinding();

        binding.Security.Mode = SecurityMode.TransportWithMessageCredential;
        binding.Security.Transport.ClientCredentialType = HttpClientCredentialType.None;

        ServiceClient client = new ServiceClient(
            binding, new EndpointAddress("https://example.com/service.svc"));
        client.ClientCredentials.UserName.UserName = username;
        client.ClientCredentials.UserName.Password = password;
        client.ClientCredentials.ServiceCertificate.SslCertificateAuthentication = new X509ServiceCertificateAuthentication
        {
            CertificateValidationMode = X509CertificateValidationMode.None,
            RevocationMode = X509RevocationMode.NoCheck
        };

        _result = Task.Run(() => client.InquiryDataAsync("ABC")).Result;

Answer 1

Core不支持Wshttpbinding，wcf只支持BasicHttpBinding、CustomBinding、NetHttpBinding、NetTcpBinding：

所以目前有两种解决方案：

修改服务器的绑定，不要使用Wshttpbinding。

客户端继续使用 .net 框架。

有关核心中的 WCF 功能的更多信息，您可以参考此链接：

https://github.com/dotnet/wcf/blob/master/release-notes/SupportedFeatures-v2.1.0.md