Two internal ports on same host in Single Web App.

[janakackv]

I have an application runs on port 8080. 
Ex: 192.168.1.10:8080/Index.html. 

This landing page has basic username and password authentication to access
it. After login, it changes the port automatically to 8088. 
Ex: 192.168.1.10:8088/#/monitor. 

I need external users to access this application using only port 80 and
Nginx to rewrite between both ports. 
Ex. app.domain.com

How can I configure this. please advice.

Regards
Janaka

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,286825,286825#msg-286825