This is a web app that acts as a fastdl with basic access control for source engine games. Users can upload maps and add server addresses to a whitelist, which is then used to determine which clients are allowed to download maps.

All unmodified source clients set Referer to hl2://address:port, which allows fastdl to check the address against a known whitelist of servers and prevent access if necessary to save bandwidth. While this is not much of a form of authentication, it does prevent unauthorized servers from mooching off of your bandwidth just by setting sv_downloadurl.

fastdl is written in Python 3 using Flask. To use it, install the requirements, set configuration options, set up the database, and add an initial user:

# To use a virtual environment (recommended):
python3 -m venv .venv
source .venv/bin/activate

# Install requirements
pip install -r requirements.txt

# Configure
cp instance/fastdl.cfg.sample instance/fastdl.cfg
vi instance/fastdl.cfg

# Set up database
export FLASK_APP=fastdl
flask db create

# Add an initial user
flask user create <your customurl> --admin

You can then deploy it as a wsgi app using your method of choice (see http://flask.pocoo.org/docs/1.0/deploying/).