The Scheduler
a42b1ff04e
Issue Manager / issue-manager (push) Has been cancelled
Build Docs / changes (push) Has been cancelled
Build Docs / langs (push) Has been cancelled
Build Docs / build-docs (push) Has been cancelled
Build Docs / docs-all-green (push) Has been cancelled
Conflict detector / main (push) Has been cancelled
Test Redistribute / test-redistribute (fastapi) (push) Has been cancelled
Test Redistribute / test-redistribute (fastapi-slim) (push) Has been cancelled
Test Redistribute / test-redistribute-alls-green (push) Has been cancelled
Test / lint (push) Has been cancelled
Test / test (pydantic-v1, 3.10) (push) Has been cancelled
Test / test (pydantic-v1, 3.11) (push) Has been cancelled
Test / test (pydantic-v1, 3.13) (push) Has been cancelled
Test / test (pydantic-v1, 3.8) (push) Has been cancelled
Test / test (pydantic-v1, 3.9) (push) Has been cancelled
Test / test (pydantic-v2, 3.10) (push) Has been cancelled
Test / test (pydantic-v2, 3.11) (push) Has been cancelled
Test / test (pydantic-v2, 3.12) (push) Has been cancelled
Test / test (pydantic-v2, 3.13) (push) Has been cancelled
Test / test (pydantic-v2, 3.14) (push) Has been cancelled
Test / test (pydantic-v2, 3.8) (push) Has been cancelled
Test / test (pydantic-v2, 3.9) (push) Has been cancelled
Test / coverage-combine (push) Has been cancelled
Test / check (push) Has been cancelled
Label Approved / label-approved (push) Has been cancelled
FastAPI People Contributors / job (push) Has been cancelled
FastAPI People Sponsors / job (push) Has been cancelled
Update Topic Repos / topic-repos (push) Has been cancelled
FastAPI People / job (push) Has been cancelled
Test / test (pydantic-v1, 3.12) (push) Has been cancelled
84 lines
2.5 KiB
Python
84 lines
2.5 KiB
Python
from typing import List
|
|
|
|
from fastapi import FastAPI, WebSocket, WebSocketDisconnect
|
|
from fastapi.responses import HTMLResponse
|
|
|
|
app = FastAPI()
|
|
|
|
html = """
|
|
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<title>Chat</title>
|
|
</head>
|
|
<body>
|
|
<h1>WebSocket Chat</h1>
|
|
<h2>Your ID: <span id="ws-id"></span></h2>
|
|
<form action="" onsubmit="sendMessage(event)">
|
|
<input type="text" id="messageText" autocomplete="off"/>
|
|
<button>Send</button>
|
|
</form>
|
|
<ul id='messages'>
|
|
</ul>
|
|
<script>
|
|
var client_id = Date.now()
|
|
document.querySelector("#ws-id").textContent = client_id;
|
|
var ws = new WebSocket(`ws://localhost:8000/ws/${client_id}`);
|
|
ws.onmessage = function(event) {
|
|
var messages = document.getElementById('messages')
|
|
var message = document.createElement('li')
|
|
var content = document.createTextNode(event.data)
|
|
message.appendChild(content)
|
|
messages.appendChild(message)
|
|
};
|
|
function sendMessage(event) {
|
|
var input = document.getElementById("messageText")
|
|
ws.send(input.value)
|
|
input.value = ''
|
|
event.preventDefault()
|
|
}
|
|
</script>
|
|
</body>
|
|
</html>
|
|
"""
|
|
|
|
|
|
class ConnectionManager:
|
|
def __init__(self):
|
|
self.active_connections: List[WebSocket] = []
|
|
|
|
async def connect(self, websocket: WebSocket):
|
|
await websocket.accept()
|
|
self.active_connections.append(websocket)
|
|
|
|
def disconnect(self, websocket: WebSocket):
|
|
self.active_connections.remove(websocket)
|
|
|
|
async def send_personal_message(self, message: str, websocket: WebSocket):
|
|
await websocket.send_text(message)
|
|
|
|
async def broadcast(self, message: str):
|
|
for connection in self.active_connections:
|
|
await connection.send_text(message)
|
|
|
|
|
|
manager = ConnectionManager()
|
|
|
|
|
|
@app.get("/")
|
|
async def get():
|
|
return HTMLResponse(html)
|
|
|
|
|
|
@app.websocket("/ws/{client_id}")
|
|
async def websocket_endpoint(websocket: WebSocket, client_id: int):
|
|
await manager.connect(websocket)
|
|
try:
|
|
while True:
|
|
data = await websocket.receive_text()
|
|
await manager.send_personal_message(f"You wrote: {data}", websocket)
|
|
await manager.broadcast(f"Client #{client_id} says: {data}")
|
|
except WebSocketDisconnect:
|
|
manager.disconnect(websocket)
|
|
await manager.broadcast(f"Client #{client_id} left the chat")
|