How can I establish a secure connection to a websocket on localhost?

Question

We have an application which we run on a POS terminal, that should receive data from an application running on the same machine, while displaying content from a remote site whic

Answer 1

If you have admin privileges on the POS terminals, how about adding a line to the HOSTS file like:

127.0.0.1 localhost.mycompany.com

Now you can use a real certificate for localhost.mycompany.com in the server application.