Redirecting without canonicalizing the port

Server NGINX
1

Can I redirect to a URL that uses the port number in the request, as
opposed to the port specified in listen? (so as to work with
proxies/tunnels)

E.g., if I have listen 444 and have a tunnel so that my client is
surfing http://localhost:4444, I don’t want my redirects to send the
client to http://localhost:444, which is currently the case - I want
the port number to be reflected back, not “canonicalized.”

Thanks in advance for any hints.

2

This seems to happen for all redirects (e.g. rewrites), but if it
makes any difference, the particular redirect I’m interested in is
from

location /foo { alias /…/foo; }

Requests to /foo get redirected to /foo/ (but with the wrong port
number, as described below).