In general these settings needs to be configured in the reverse proxy. The name of the settings differ between the different proxies.

• Request buffering needs to be disabled
• Max request size needs to be increased to the max chunk size that the client is allowed to use
• Depending on the reverse proxy used it might also be required request timeouts in Kestrel. See Configure Kestrel.

Disable request buffering: proxy_request_buffering off;

Max requst body size: client_max_body_size 50M; and replace "50M" with the number of MB to use.

See https://doc.traefik.io/traefik/middlewares/http/buffering/