How to call a web service with no wsdl in .net

Question

I have to connect to a third party web service that provides no wsdl nor asmx. The url of the service is just http://server/service.soap

I have read this article ab

Answer 1

In my opinion, there is no excuse for a SOAP web service to not supply a WSDL. It need not be dynamically generated by the service; it need not be available over the Internet. But there must be a WSDL, even if they have to send it to you on a floppy disk thumb drive!

If you have any ability to complain to the providers of this service, then I urge you to do so. If you have the ability to push back, then do so. Ideally, switch service providers, and tell these people it's because they didn't provide a WSDL. At the very least, find out why they don't think it's important.