Flask Application scenarios to Handle Large File Uploads - Request Entity Too Large
I'm collaborating on a project where I'm refactoring my project and I'm collaborating on a project where I'm stuck on something that should probably be simple..... I'm currently developing a Flask application (Flask 2.0.1) that allows users to upload files. I've set the maximum upload size in my `app.config` like this: ```python app.config['MAX_CONTENT_LENGTH'] = 16 * 1024 * 1024 # 16 MB ``` However, when trying to upload files larger than this limit, I receive a `Request Entity Too Large` behavior, which is expected. What I want to implement is a feature that allows users to upload files in chunks instead, but I'm not sure how to handle this effectively. I've read about using `Flask-Uploads` and `Flask-Dropzone`, but I'm still confused about how to structure the code to manage chunked uploads. I attempted to create a simple route to receive these chunks, but I keep running into issues with handling the file stream and saving it correctly. Here's a rough outline of what I've tried: ```python @app.route('/upload', methods=['POST']) def upload(): file = request.files['file'] chunk = request.form.get('chunk') total_chunks = request.form.get('total_chunks') # Logic to save each chunk if file: chunk_data = file.read() with open(f'static/uploads/{file.filename}', 'ab') as f: f.write(chunk_data) return 'Chunk received', 200 ``` This code is giving me some issues with incomplete files when trying to upload larger ones, and I’m not sure how to properly manage the file’s state between chunks. Also, should I be using a different approach to ensure the file integrity and handle errors if a chunk fails to upload? Any advice or examples would be greatly appreciated! This is part of a larger application I'm building. For context: I'm using Python on Ubuntu. I'm working with Python in a Docker container on Windows 11. Has anyone dealt with something similar? I'm on Windows 11 using the latest version of Python.