Redirecting to external ip but without leaving the page or directory url

[opalepatrick]

I want to link to an external site via mysite.com/demo - the problem with the 301 redirect solutions I have seen is that they go to the new url. I would like the url to remaIn mysite.com/demo. It was suggested that I drop a .htaccess file with some proxy settings into /demo, but I can't see how I would do that with Processwire. Any ideas?

PS. I know that I can do this with a subdomain and changing the A record, but I have an existing ssl cert that needs to be used on the main domain.

[LostKobrakai]

Every real existing folder won't be picked-up by processwire's .htaccess and so you can simply create a folder /demo and use a custom .htaccess inside of /demo.

[opalepatrick]

Thanks LostKobrakai - I just need to work out how to proxy https