implementing File Uploading in Flask with Flask-Upload - Unexpected 413 scenarios
I'm optimizing some code but Hey everyone, I'm running into an issue that's driving me crazy. I'm working on a Flask application using Flask-Upload for handling file uploads, and I'm working with a `413 Request Entity Too Large` behavior when I try to upload files larger than 1MB. I've set up a simple file upload form and I'm trying to allow users to upload image files. Here’s the relevant part of my code: ```python from flask import Flask, request, redirect, url_for, render_template 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 # Limit to 16 MB photos = UploadSet('photos', IMAGES) configure_uploads(app, photos) @app.route('/upload', methods=['GET', 'POST']) def upload(): if request.method == 'POST': if 'photo' not in request.files: return 'No file part' file = request.files['photo'] if file.filename == '': return 'No selected file' photos.save(file) return 'File uploaded successfully' return render_template('upload.html') ``` I've also set the `MAX_CONTENT_LENGTH` to 16 MB, but it seems like Flask is still rejecting files that are even slightly above its default limit. I inspected my Nginx configuration, and I found that I hadn’t set a `client_max_body_size`, which defaults to 1MB. I added `client_max_body_size 16M;` in my Nginx configuration file under the server block, like this: ```nginx server { listen 80; server_name myapp.com; location / { proxy_pass http://localhost:5000; client_max_body_size 16M; } } ``` After making this change, I restarted Nginx, but I'm still getting the same `413 Request Entity Too Large` behavior when attempting to upload files larger than 1MB. I’ve tried checking the logs in both Flask and Nginx, but they don’t provide much insight. Is there something I'm missing in the configuration, or is there another way to debug this scenario? Any help would be greatly appreciated! My development environment is Windows. Has anyone else encountered this? What would be the recommended way to handle this?