Open Forms supports file upload fields in forms, which needs some special care at the webserver level.
Typically Open Forms is deployed behind a load balancer - on Kubernetes this would be your ingress solution, while on a single-server setup you'd typically run a reverse proxy like nginx on your host.
Misconfiguration or bad tuning will typically result in :ref:`installation_issues_http_413` errors.
The following endpoint(s) process file-uploads:
/api/v1/submissions/files/upload
We recommend specifying upload limits specifically for these endpoints, as allowing large requests bodies poses a Denial-of-Service (DOS) risk.
For example:
location = /api/v1/submissions/files/upload {
client_max_body_size 50M;
// usual proxy directives...
proxy_pass http://backend;
}
Additionally, Open Forms supports the MAX_FILE_UPLOAD_SIZE
environment variable.
File uploads larger than that will be rejected, and the value will be dynamically
presented in the form designer and relevant API documentation.