Multiple Services with one implementation class

Sat, 04 Jul 2009 15:17:32 Z

I have a two service contracts, call them IService1 and IService2 within the same file/namespace.

I have one implementation class where I am trying to implement both of the services:

public

class Service1 : IService1, IService2

{

public string GetData(int value)

{

return string.Format("You entered: {0}", value);

}
....

I have added a second address/endpoint to my app.config file:

services>

service name="TestMultipleInterfaces.Service1" behaviorConfiguration="TestMultipleInterfaces.Service1Behavior">

host>

baseAddresses>

add baseAddress = "http://localhost:8731/Design_Time_Addresses/TestMultipleInterfaces/Service1/" />

baseAddresses>

host>

<!--

Service Endpoints -->

<!--

Unless fully qualified, address is relative to base address supplied above -->

endpoint address ="Rosey" binding="wsHttpBinding" contract="TestMultipleInterfaces.IService1">

identity>

dns value="localhost"/>

identity>

endpoint>

endpoint address ="TestManage" binding="wsHttpBinding" contract="TestMultipleInterfaces.IService2" >

identity>

dns value="localhost"/>

identity>

endpoint>

endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/>

service>

services>

What happens when I try to run this is that I get an error saying ' Cannot obtain Metadata from
http://localhost:8731/Design_Time_Addresses/TestMultipleInterfaces/Service1/mex'

I may be missing something simple here. Does this have to do with the addresses I have given my endpoints?

Thanks!

Multiple Services with one implementation class

Sat, 04 Jul 2009 20:46:00 Z

When using mex bindings, you have to specify the serviceMetadata attribute. First you have to create a new service behavior:

<behaviors>
  <serviceBehaviors>
    <behavior name="serviceBehavior">
      <serviceMetadata />
    </behavior>
  </serviceBehaviors>
</behaviors>

Then you have to assign the behavior to the service using the behaviorConfiguration attribute.

Did this help?

Regards,

John

Multiple Services with one implementation class

Sat, 04 Jul 2009 21:12:05 Z

Actually, that part is already in my config file, I just didn't include it in the above code. The code will work if I remove one of the interfaces and only implement my service class from one of the interfaces. When I add the other one though, thats when I get this error.

Thanks!

Multiple Services with one implementation class

Sun, 05 Jul 2009 03:17:36 Z

Try adding this to your service's behavior definition:

<serviceDebug includeExceptionDetailInFaults="True" />

Did it help in localizing the error?

Regards,

John

Multiple Services with one implementation class

Sun, 05 Jul 2009 21:15:11 Z

Ah, good tip! Totally forgot about that.

As I figured, it was something stupid. I had operation names in my second service that were the same as in my first service, and that conflicted. I fixed it by giving the second service different operation names.

Thanks!