使用以下代码启动 SocketIO 并像您一样创建线程时,客户端无法接收服务器发出的消息。 socketio.run() 我发现 flask_socketio 从文档中提供了一个名为 start_background_task 的函数。 这是它的描述。 start_background_task(目标,*args,**kwargs) 使用适当的异步模型启动后台任务。这是一个实用程序函数,应用程...
socketio的start_background_task函数用于新建一个线程,处理业务,在线程中在请求上下文中调用收发功能函数 app = Flask(__name__) app.config['SECRET_KEY'] ='secret!'socketio= SocketIO(app, async_mode=async_mode)defbackground_thread():"""Example of how to send server generated events to clients....
thread=socketio.start_background_task(background_thread) emit('my_response', {'data':'Connected','count': 0}) @socketio.on('disconnect')deftest_disconnect():print('Client disconnected', request.sid)if__name__=='__main__': socketio.run(app, host='0.0.0.0', debug=True) (3)index....
thread = socketio.start_background_task(target=background_thread) def background_thread(): while True: socketio.sleep(5) t = random.randint(1, 100) socketio.emit('server_response', {'data': t}, namespace='/test_conn') if __name__ == '__main__': socketio.run(app, debug=True...
Hi Miguel, really awesome project. I have a problem when use the Flask-SocketIO. I wanna start a background task automatic when the socketio server begins to run. The background task can continuously broadcast the message to client by us...
此函数在建立socket连接时被调用 """ print("socket 建立连接") global thread with thread_lock: print(thread) if thread is None: # 如果socket连接,则开启一个线程,专门给前端发送消息 thread = socketio.start_background_task(target=background_thread) ...
Question: flask-socket.io keep's background task ( socketio.start_background_task ) running even after the client has left or disconnected. Is there some way to immediately close a background tasks after some on has left?Owner miguelgrinberg commented Oct 17, 2020 You can code your back...
@socketio.on('request_for_response',namespace='/testnamespace') def give_response(data): value = data.get('param') #进行一些对value的处理或者其他操作,在此期间可以随时会调用emit方法向前台发送消息 emit('response',{'code':'200','msg':'start to process...'}) ...
socketio.emit('chip was readed', {"timestamp": id} ) @socketio.on('read_card') def handle_read_card_event(): global thread with thread_lock: if thread is None: thread = socketio.start_background_task(background_task, current_app._get_current_object()) ...
'socketio=SocketIO(app,async_mode=async_mode)thread=Nonethread_lock=Lock()# 后台线程 产生数据,即刻推送至前端defbackground_thread():"""Example of how to send server generated events to clients."""count=0whileTrue:socketio.sleep(5)count+=1t=time.strftime('%M:%S',time.localtime())# 获取...