Today we are going to learn how we can quickly and easily generate a websocket with FastAPI.
Step 1: Environment Setup, if you already have FastAPI installed, you can skip these steps.
Make sure you have Python installed on your system. Then, install FastAPI and Uvicorn using pip:
pip install fastapi uvicorn
Step 2: Create a FastAPI Project
Create a new directory for your project and inside it, create a file named main.py.
Step 3: Configure FastAPI Server with WebSocket
Open the main.py file in your favorite text editor and implement the following code:
This code sets up a WebSocket in FastAPI with an endpoint /ws/{client_id}. The ConnectionManager class manages connections and sends messages to clients.
Step 4: Run the FastAPI Server
Open your terminal and run the following command to start the FastAPI server:
uvicorn main:app --reload
This will start the server at http://127.0.0.1:8000.
Step 5: Test the WebSocket with FastAPI on a Domain
You can use this website if your server is online: https://piehost.com/websocket-tester
Enter the URL of your websocket server: wss://yourdomain.com/ws/1
And you’ll receive the following:
