I chose the second option, it worked fine thank you

In your case, you are receiving the error while trying to download the WSDL, so the code can’t even create the driver, let alone set options on it.

You probably have two options:

(1) Create a SOAP properties file. This is the only way to pass options to the SOAP4R gem before it loads the WSDL. If you do this, you would put the location of your certificate files in the properties file instead of the code. You can find a detailed example here: http://s2.diffuse.it/blog/show/62-Consume_SSL_protected_Web_Services_with_soap4r

(2) Preferably, you should not be downloading and consuming WSDL on the fly. It would be better to download the WSDL and save it inside your project. In this case, WSDL_URI should be a filename instead of a URL. If you do this, the code in my example should work for you.