forward localhost from server to Termux.

get Termux local ips (even tailsall).

ifconfig 2> /dev/null | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '[0-9.]*'
192.168.1.23

run the gradio/http_server/... on port 7861 or any port allowed on server.

on Termux: we just need to run:

ssh -p 22 -L 7861:localhost:7861 user@ip

use tailscall if your router not allow ssh port 22, or for use static ip.