I got more information on this error message by removing truncate option in Fiddler.
The response returned indicates the basic .svc page
You have created a service.
To test this service, you will need to create a client and use it to call the service. You can do this using the svcutil.exe tool from the command line with the following syntax:
The Fiddler call history shows the tunnel from http to https url and then getting the service page back. Now my question is why the service is returning the .svc page instead of executing the operation and returning the response.