How to get the wsdl file from a webservice's URL

Question

I want to get the WSDL file for a webservice and the only thing I have is its URL (like webservice.example/foo).

If I use the URL directly only an error response is

Answer 1

Its only possible to get the WSDL if the webservice is configured to deliver it. Therefor you have to specify a serviceBehavior and enable httpGetEnabled:

In case the webservice is only accessible via https you have to enable httpsGetEnabled instead of httpGetEnabled.