The test harness logs some of my HTTP messages as invalid due to an incorrect HTTP version and it’s not the version I’m sending, why? The messages tend to have via headers in them.

Created by Penny Murray, Modified on Thu, 13 Oct, 2022 at 5:42 AM by Penny Murray

Your HTTP request or response is going through a proxy server. As the test harness has to follow the SIF specification, it can only accept HTTP/1.1 as a valid SIF HTTP message. If your proxy server is changing the version to HTTP/1.0, you will have to address that on your end. Future versions of the SIF specification may have to address the issue of HTTP proxies and gateways.