Get OperationContract Name In IDispatchMessageInspector

Question

 

Hi,

Can any one tell me how to get Operation Contract Name in IDispatchMessageInspector??

I used to get the WebMethod name in SoapExtensions in legacy ASMX WebService as below

 

message.MethodInfo.Name where message is a SoapMessage.

 

Since IDispatchMessageInspector is a replacement of SoapExtensions in WCF, can anyone suggest the appropriate code to get the Operation Contract name in IDispatchMessageInspector ??

 

Any suggestions here are welcome.

 

Thanks In Advance.

Answer 1

Well, the message that you're inspecting has the action in its headers:

 

message.Headers.Action

 

Or if you don't want to use the message, you can access the message headers from the OperationContext:

 

OperationContext.Current.IncomingMessageHeaders.Action

Answer 2

Hi Sasha,

Thanks for that information using the code message.Headers.Action i am getting the full URI of the action like if my method name is testmethod i am getting http://sunsmile.com/testmethod

 

Is there anyway i can get only the method name (testmethod) using any of the properties of message or should i do some kind of String manipulation to extract method name from URI?

 

Getting the method name directly instead of doing string manipulation would be great.

 

Any comments , suggestions are welcome here.

 

Thanks In Advance.

 

 

 

 

Answer 3

That's what I did in the past:  (There might be a cleaner way)

OperationContext ctx = OperationContext.Current;
ServiceDescription hostDesc = ctx.Host.Description;
ServiceEndpoint endpoint = hostDesc.Endpoints.Find(ctx.IncomingMessageHeaders.To);
string operationName = ctx.IncomingMessageHeaders.Action.Replace(
  endpoint.Contract.Namespace + endpoint.Contract.Name + "/", "");
OperationDescription operation =
endpoint.Contract.Operations.Find(operationName);

And yes, it uses string manipulation but at least it relies on the proper endpoint and service contract namespace and name.

Answer 4

Hi Sasha,

Thanks for that code. The below code works for me according to my namespaces.

 

OperationContext ctx = OperationContext.Current;

ServiceDescription hostDesc = ctx.Host.Description;

ServiceEndpoint endpoint = hostDesc.Endpoints.Find(ctx.IncomingMessageHeaders.To);

 

string operationName = request.Headers.Action.Replace(endpoint.Contract.Namespace + "/", "").ToLower();

 

where operationName comes out as testmethod. Request  = Incoming message.

 

One quick question here in soap extensions i used to get the  incoming parameter of webmethod as below

 

string str = message.GetInParameterValue(0)

 

Can you please suggest equivalent code in IDispatchMessageInspector.

 

Any comments here are welcome.

 

Thanks In Advance.

Answer 5

You will need a parameter inspector to do that.  In your parameter inspector, you will gain access to the inputs and outputs of the operation.

http://msdn.microsoft.com/en-us/library/system.servicemodel.dispatcher.iparameterinspector.aspx

Answer 6

How about this?

Path.GetFileName(Buffer.CreateMessage().Headers.Action)

Answer 7

and this for the service

Path.GetFileNameWithoutExtension(Buffer.CreateMessage().Headers.To.AbsolutePath)

cheesy but it works