As the title suggests. We are using Gatling 3.3.1 and attempting to write tests against a service running on IIS that is expecting windows credentials to be sent (Integrated Security). When the URL being tested is run in a browser everything is fine but run through gatling a 401 is thrown.
When looking at the IIS logs its apparent that user info is not being passed from gatling but is visible for the requests from the browser. I've looked through the docs and don't see anything. I've tried things like adding .header("WWW-Authenticate", "NTLM") to the HTTP item but it doesn't seem to change anything.
Any ideas would be appreciated.