I'm invoking a service using a ServiceClient, the wsdl operation declares an empty soapAction.
However the soapActiuon actually sent is "urn:anonOutInOp" which the server refuses. This action is the action the anonymous operation "urn:anonOutInOp" and is set by the ServiceClient.
Later when CommonsHTTPTransportSender#findSOAPAction  is invoked, if the action of the MessageContext is null or empty, the operation action is used. The empty case seems like a bug, because this is the action set in the wsdl and it is not applied.
This opinion is strengthened by the fact that other senders do not have this behavior.
The right behavior would be:
if null ; use the operation action as a default
if empty ; send an empty soapAction
Could you confirm please?