implementing File Upload Limits in Flask When Using Flask-Uploads
Could someone explain I'm deploying to production and I'm trying to figure out I've been banging my head against this for hours. I'm currently working on a Flask application using Flask-Uploads to handle file uploads, but I'm running into a frustrating scenario. I’ve set up a basic structure to allow users to upload images, but I keep hitting an behavior when trying to upload files that exceed a certain size limit, even though I believe I've configured my app correctly. I started with a simple configuration: ```python from flask import Flask from flask_uploads import UploadSet, configure_uploads, IMAGES app = Flask(__name__) app.config['UPLOADED_PHOTOS_DEST'] = 'uploads/' app.config['MAX_CONTENT_LENGTH'] = 16 * 1024 * 1024 # 16 MB photos = UploadSet('photos', IMAGES) configure_uploads(app, photos) ``` I assumed that setting `MAX_CONTENT_LENGTH` would limit the size of incoming files, but when I try to upload an image larger than 16 MB, I get this behavior message: ``` werkzeug.exceptions.RequestEntityTooLarge: The data is too big to be processed. ``` I also tried to handle this behavior by wrapping my upload route with a try-except block: ```python @app.route('/upload', methods=['POST']) def upload(): try: filename = photos.save(request.files['photo']) return f'Uploaded: {filename}' except Exception as e: return str(e) ``` However, the behavior still occurs before it even reaches the route, and it doesn't seem to be caught. I checked my Flask version, and it’s 2.0.1, along with Flask-Uploads 0.2.1. I've also ensured that I don't have any conflicting settings in my Nginx configuration, as I’m running this app behind Nginx. The relevant part of my Nginx config looks like this: ```nginx server { client_max_body_size 16M; location / { proxy_pass http://localhost:5000; } } ``` I suspect that Nginx might be rejecting the request before it even hits Flask, but when I do a `curl` command to test the upload, I don't get any Nginx errors in the logs. Any thoughts on how to diagnose and fix this scenario? Is there a specific configuration that I might be missing? Thanks in advance! I'm working on a API that needs to handle this. Is there a better approach? This is part of a larger CLI tool I'm building. Thanks for taking the time to read this!