Some of our client's corporate networks seem to be tightly locked down and although they can log in to our shiny apps they are getting grayed out screens after logging into the app.
Since this only happens to a very small few of our clients I'm assuming it is a firewall and websockets issue on their end.
My questions are these:
Is this url with the "wss" something that Shiny is doing? Because we are not explicitly using websockets ourselves.
If so, what would be an appropriate firewall rule to allow websockets from Shiny?