I’m trying to packaging an app that reverse-proxies uploads to a backend in real time (a tunnel/gateway app) to ease my setup. Cloudron’s nginx currently buffers the complete request body before passing it to the app (proxy_request_buffering on). For large uploads this means:

• clients see 100 % progress while the app hasn’t received any data yet,
• the whole body is written to the server disk first,
• the total upload time roughly doubles for streamed workloads.
• A manual test with proxy_request_buffering off; in the app’s vhost confirmed that streaming works as expected, but of course that change is overwritten whenever Cloudron regenerates the config.

Would it be possible to add a manifest option (for example "proxyRequestBuffering": false), or an admin setting per app, to disable request buffering for apps that need streaming uploads?

A related question: Cloudron replaces 502/503/504 responses from the app with its own appstatus.html page. Is there a way for an app to return its own error responses (for example JSON errors for API clients) instead?

Your's Tim, Thanks!