If i understand your problem correctly youve created a project via the .wsdl and when you submit your request its going to an https endpoint not http....is that right?
If thats correct then why not edit the .wsdl to change the https to http? Wouldnt that fix this?
OR, are you saying that youll submit an non secure http request and this once consumed by your endpoint is FWDing to https?
There is a "follow redirects" switch on requests, however i think that is peculiar to api/page redirects rather switching http to https and back again.
if this helped answer the post, could you please mark it as 'solved'? Also if you consider whether the title of your post is relevant? Perhaps if the post is solved, it might make sense to update the Subject header field of the post to something more descriptive? This will help people when searching for problems. Ta