如何在FastAPI中实现请求的反欺诈和安全性

from fastapi import FastAPI, Header, HTTPException, Depends, Responsefrom pydantic import BaseModelfrom typing import Optional

class Request(BaseModel):    user_agent: Optional[str] = None    ip_address: Optional[str] = Noneclass ResponseModel(BaseModel):    result: str

async def check_fraud(request: Request, api_key: str = Header(...)) -> Response:    # 检查用户代理    if request.user_agent and 'bot' in request.user_agent:        raise HTTPException(            status_code=403,            detail='Bot Detected'        )    # 检查IP地址    if request.ip_address and request.ip_address in blacklist:        raise HTTPException(            status_code=403,            detail='IP Address Blocked'        )    # 其他检查逻辑...    # 返回结果    return ResponseModel(result='Success')

app = FastAPI()@app.post('/api/verify', status_code=200)async def verify(request: Request, response: Response = Depends(check_fraud)):    return response

if __name__ == '__main__':    import uvicorn    uvicorn.run(app, host='0.0.0.0', port=8000)