# Early preview of public ports!

**URL:** <https://community.firebasestudio.dev/t/early-preview-of-public-ports/1911>\
**Category:** General\
**Tags:** feature\
**Created:** [September 13, 2024, 11:47pm UTC](https://community.firebasestudio.dev/t/early-preview-of-public-ports/1911 "2024-09-13T23:47:59Z")\
**Posts on this page:** 1\
**Showing post:** 17

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**Author:** ![romannurik](https://sea2.discourse-cdn.com/flex002/user_avatar/community.firebasestudio.dev/romannurik/32/4841_2.png) [@romannurik](https://community.firebasestudio.dev/u/romannurik)\
**Post date:** [September 26, 2024, 1:37pm UTC](https://community.firebasestudio.dev/t/early-preview-of-public-ports/1911/17 "2024-09-26T13:37:21Z")

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Found the problem! Thanks so much for helping us identify it. In short, one of our proxies is removing CORS headers (e.g. `Access-Control-Allow-Origin`) in the HTTP response for the browser’s OPTIONS request (aka “preflight”, which are used for POST requests).

I haven’t found a good workaround yet, but we’ll follow up in [the bug you filed](https://issuetracker.google.com/issues/369331504) (thank you!). Hopefully this is something we can resolve shortly.

**EDIT** : I updated the bug title and added repro steps, will now follow up with our infra teams on this.

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_[View the full topic](https://community.firebasestudio.dev/t/early-preview-of-public-ports/1911)._