Geek Answers Handbook

ActionNotSupported error while creating WCF service at run time

I am trying to create a WCF service at runtime. My service interface:

 [ServiceContract] public interface IInformationService : IService { [OperationContract] [WebInvoke(Method = "Get", ResponseFormat = WebMessageFormat.Json, UriTemplate = "Test", RequestFormat = WebMessageFormat.Json)] string Test(); }

I serve my service as follows:

 var httpEnumerator = ImplementedContracts.Values.GetEnumerator(); httpEnumerator.MoveNext(); var httpContractType = httpEnumerator.Current.ContractType; var webBinding = new WebHttpBinding() { Security = { Mode = WebHttpSecurityMode.None } }; var httpEndpoint = AddServiceEndpoint( httpContractType, webBinding, baseAddress+/Get" ); httpEndpoint.Behaviors.Add(new CustomEndpointBehavior());

ServiceHost is created using this method:

 protected override ServiceHost CreateServiceHost(Type serviceType, Uri[] baseAddresses) { var host = new WcfServiceHost(serviceType, baseAddresses); if (host.Description.Behaviors.Contains(typeof(ServiceDebugBehavior))) { (host.Description.Behaviors[typeof(ServiceDebugBehavior)] as ServiceDebugBehavior).IncludeExceptionDetailInFaults = true; } else { var debug = new ServiceDebugBehavior { IncludeExceptionDetailInFaults = true }; host.Description.Behaviors.Add(debug); } if (host.Description.Behaviors.Contains(typeof(ServiceMetadataBehavior))) { (host.Description.Behaviors[typeof(ServiceMetadataBehavior)] as ServiceMetadataBehavior).HttpGetEnabled = true; (host.Description.Behaviors[typeof(ServiceMetadataBehavior)] as ServiceMetadataBehavior).HttpsGetEnabled = true; } else { var smb = new ServiceMetadataBehavior { HttpGetEnabled = true, HttpsGetEnabled = true }; host.Description.Behaviors.Add(smb); } host.AddServiceEndpoint( ServiceMetadataBehavior.MexContractName, MetadataExchangeBindings.CreateMexHttpsBinding(), "mex" ); host.AddServiceEndpoint( ServiceMetadataBehavior.MexContractName, MetadataExchangeBindings.CreateMexHttpBinding(), "mex" ); return host; }

Creating a service route:

 var serviceRoute = new ServiceRoute( "wcf.service/" + service.Value.Name, new WcfServiceHostFactory(), service.Value ); if (!RouteTable.Routes.Contains(serviceRoute)) { RouteTable.Routes.Add(serviceRoute); }

When I try to access my service from a web browser using the address

http://localhost/Werp.View/wcf.service/InformationService/Get/Test

I get the following error:

 <Fault xmlns="http://schemas.microsoft.com/ws/2005/05/envelope/none"> <Code> <Value>Sender</Value> <Subcode> <Value xmlns:a="http://schemas.microsoft.com/ws/2005/05/addressing/none"> a:ActionNotSupported </Value> </Subcode> </Code> <Reason> <Text xml:lang="en-US"> The message with Action '' cannot be processed at the receiver, due to a ContractFilter mismatch at the EndpointDispatcher. This may be because of either a contract mismatch (mismatched Actions between sender and receiver) or a binding/security mismatch between the sender and the receiver. Check that sender and receiver have the same contract and the same binding (including security requirements, eg Message, Transport, None). </Text> </Reason>

Can anybody help me?

+6
source share
2 answers

My problem was resolved when I added WebHttpBehavior to the endpoint

 httpEndpoint.Behaviors.Add(new WebHttpBehavior());
+4
source

If you don’t need certain WCF features or have a mandate to use WCF, you should consider using different stacks for REST-based services. For example, ASP.NET web API or ServiceStack . It seems like a lot of work to make a simple REST call.

If you enable service diagnostics, this can help diagnose the problem. You can see this SO for detailed instructions.

You can also refer to this SO: WCF - ContractFilter mismatch in the EndpointDispatcher exception for some ideas.

+4
source

More articles:


All Articles