Javascript canvas drawing tool using Redis pub/sub

Features

• Uses FastAPI for serving WebSockets
• Draw commands are communicated using Redis PubSub
• There is no local echo
• Drawings are also stored to a Redis Stream for replay
  • Stream is deleted on clear

Usage

pip install -r requirements.txt
uvicorn websocket:app

Redis settings can be defined with environment variables REDIS_HOST, REDIS_PORT and REDIS_PASS.

Server will by default listen on http://127.0.0.1:8000. Alternatively you can give uvicorn parameters --host and --port

By default a new UUID will be generated on access none is specified. Each canvas has its own pubsub topic and stream.