CORS error when accessing through an SSH tunnel

[burakbudanur]

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Example Code

BACKEND_CORS_ORIGINS="http://localhost,http://localhost:2222,https://localhost:2222,http://localhost:5173,https://localhost,https://localhost:5173,http://localhost.tiangolo.com"

Description

I have the stack built on an aws ec2 machine and I would like to connect to it via an ssh tunnel established via

ssh -i certificate -L 2222:localhost:80 user@remote_host

By going to http://localhost:2222/login, I reach the login page, but when I try to login I get

Access to XMLHttpRequest at 'http://localhost/api/v1/users/me' from origin 'http://localhost:2222' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

on the javascript console. Adding localhost:2222 to the BACKEND_CORS_ORIGINS does not resolve the issue. If I switch to allow_origins=['*'] in backend/app/main.py, it works.

My goal was to establish a test environment, without getting a public domain, where my teammates can browse the app. Perhaps there is an easier way to achieve this...

Operating System

Linux

Operating System Details

Ubuntu 22.04.4 LTS (GNU/Linux 6.5.0-1014-aws x86_64)

Python Version

3.10

Additional Context

No response