how to connect to external https service manually

See more:

service

SOAP

HTTPS

proxy

Everywhere I look for hints to connect to a (web)service, I am advised to choose "add service reference" but that wont'work in my current situation. The implementation in my case is a third party service, and the template is not able to continue and cannot create a proxy for me.

So I am stuck with this situation: I have to connect to a third party service that has to be connected through HTTPS with a certificate. I have that in place allright. But the template won’t work for me (VS2012). So I am looking for a way to do it manually.

All I have is the uri of the service, a wsdl file describing the service, an xsd file of the service and an example of an xml-soap message to send to the service.

How can I make a working connection / proxy to the service and call its methods with these ingredients?

Thanks!