I followed the explanation here: https://www.jetbrains.com/help/upsource/proxy-configuration.html to configure an IIS Reverse Proxy for upsource (to get SSL). But when navigating to the URL the page only loads partially and tries to reconnect. It seems to be related to a missing websocket connection. The website works fine when directly accessing it via localhost:8082. The login via the external hub seems to work, at least the profile picture is loaded.
Windows Server 2012
External Hub: 2017.3.6757