FastAPI WebSocket

FastAPI supports WebSockets out of the box. This is a simple example of how to use WebSockets with FastAPI.

from fastapi import WebSocket
 
@app.websocket("/ws")
async def websocket_endpoint(websocket: WebSocket):
    await websocket.accept()
    while True:
        data = await websocket.receive_text()
        await websocket.send_text(f"Message: {data}")

Supports real-time communication like chat apps.