fastapi 使用第三方包socketio 示例_fastapi socketio

import socketio
from typing import Text
from urllib.parse import parse_qs
from fastapi import FastAPI, APIRouter
 
_sio = socketio.AsyncServer(async_mode="asgi", cors_allowed_origins= [] )
_app = socketio.ASGIApp( socketio_server=_sio, socketio_path="socket.io" )
 
async def connect(sid, *args, **kwargs):
    query_string =args[0]["QUERY_STRING"]
    query_dict = parse_qs(query_string) 
    await _sio.enter_room(sid=sid,room=query_dict["roomId"][0])
 
async def disconnect(sid, *args, **kwargs):
    query_string =args[0]["QUERY_STRING"]
    query_dict = parse_qs(query_string) 
    await _sio.leave_room(sid=sid,room=query_dict["roomId"][0])
    
 
 
_sio.on('connect',connect)
_sio.on('disconnect',disconnect)
 
def SocketMnager(app:APIRouter|FastAPI):
    app.mount("/ws",_app)
    app.sio = _sio
 
 
 
from fastapi.middleware.cors import CORSMiddleware 
from fastapi import FastAPI 
app = FastAPI()
app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)
SocketMnager(app)
import uvicorn
uvicorn.run("__main__:app",host="0.0.0.0",port=3000,reload=False)

前端出现错误1
The 'Access-Control-Allow-Origin' header contains multiple values'*, *', but only one is allowed.
 

# 将前文中的cors_allowed_origins设置为[]
# 这是由于 CORSMiddleware 与socketio 重复设置请求头导致
 
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