Exposing Service metadata via HTTP Get on the Service Bus

.Net Service Bus currently doesn’t support exposing metadata via HTTP Get. Currently it only supports WS-MetadataExchange based metadata generation. I explored various options and came with following solution which seems to be working fine.

• Expose a REST endpoint with HTTP Get enabled
• From the implementation of this endpoint, forward the request to real HTTP Get endpoint
• Send the response data back to the client via Service Bus
• I have also used the new .Net 4.0 UseRequestHeadersForMetadataAddressBehavior to fix the port and host name in the generated WSDL file

I have packaged all of the above in a custom service behaviour and you can now enable this feature by simply adding this behaviour (line 16) to your service host.

 

1.     var cred = new TransportClientEndpointBehavior();
2.     cred.CredentialType = TransportClientCredentialType.SharedSecret;
3.  
4.     cred.Credentials.SharedSecret.IssuerName = "owner";
5.     cred.Credentials.SharedSecret.IssuerSecret = "SHARED-SECERET";
6.  
7.     var baseAddress = ServiceBusEnvironment.CreateServiceUri("http", "ServiceNAMESpace", "");
8.  
9.     var sh = new ServiceHost(typeof(EchoService), baseAddress);
11.     var binding = new WS2007HttpRelayBinding(EndToEndSecurityMode.None,RelayClientAuthenticationType.None);
12.     var endpoint = sh.AddServiceEndpoint(typeof(IEchoService), binding, "Echo");
13.     endpoint.Behaviors.Add(cred);
14.  
15.     //Add SBMetadataBehavior to enable http get metadata via ServiceBus
16.     sh.Description.Behaviors.Add(new SBMetadataBehavior("metadata"));
17.  
18.     sh.Open();

I have upload the complete solution so feel free to download and experiment.