Video Demonstration

I've included a video showing the download functionality working correctly after the fix:

✅ Before the fix: Downloads would hang for ~1 minute and then show a 502 Bad Gateway error
✅ After the fix: Downloads complete successfully and the zip file is generated properly

The video shows:

• A p5.js sketch being downloaded
• The download completing successfully
• The zip file (clock_2025_12_30_16_13_37.zip, 5.2 MB) being saved without errors

This confirms that the changes resolve issue #3746.

@Nixxx19 According to your video did u able to set the custom path of zip file in your machine????

@Nixxx19 Thanks for working on this and adding timeouts to prevent hanging requests — that’s a good safety improvement for the backend.

However, this change does not fully address the 502 Bad Gateway issue observed when downloading projects.

The root cause appears to be that ZIP generation (including remote asset fetching and JSZip.generateAsync) is performed synchronously before any response headers are sent. When this process takes longer than Cloudflare’s gateway timeout, Cloudflare terminates the request and returns a 502 — even though the backend may still be working.

Adding axios timeouts helps avoid infinite waits inside the Node process, but it does not prevent Cloudflare from timing out while waiting for the origin to start responding.

Suggested improvement:

Send response headers immediately and stream the ZIP output (generateNodeStream) instead of buffering the entire archive in memory.

Alternatively, move ZIP generation to an async/background job and return a download link once ready.

Starting the response early ensures Cloudflare keeps the connection open and avoids gateway errors, while also reducing memory usage on the server.
Try to keep engaging Cloudflare rather than timeout What you thinks @raclim ?