pythonasyncioeventletgeventlong-pollinglow-latencysocket-iosocketiosocketio-serverweb-serverwebsocket
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106 lines
3.0 KiB
106 lines
3.0 KiB
#!/usr/bin/env python
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# set instrument to `True` to accept connections from the official Socket.IO
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# Admin UI hosted at https://admin.socket.io
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instrument = True
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admin_login = {
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'username': 'admin',
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'password': 'python', # change this to a strong secret for production use!
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}
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import uvicorn
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import socketio
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sio = socketio.AsyncServer(
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async_mode='asgi',
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cors_allowed_origins=None if not instrument else [
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'http://localhost:5000',
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'https://admin.socket.io', # edit the allowed origins if necessary
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])
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if instrument:
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sio.instrument(auth=admin_login)
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app = socketio.ASGIApp(sio, static_files={
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'/': 'app.html',
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})
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background_task_started = False
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async def background_task():
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"""Example of how to send server generated events to clients."""
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count = 0
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while True:
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await sio.sleep(10)
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count += 1
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await sio.emit('my_response', {'data': 'Server generated event'})
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@sio.on('my_event')
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async def test_message(sid, message):
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await sio.emit('my_response', {'data': message['data']}, room=sid)
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@sio.on('my_broadcast_event')
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async def test_broadcast_message(sid, message):
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await sio.emit('my_response', {'data': message['data']})
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@sio.on('join')
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async def join(sid, message):
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await sio.enter_room(sid, message['room'])
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await sio.emit('my_response', {'data': 'Entered room: ' + message['room']},
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room=sid)
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@sio.on('leave')
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async def leave(sid, message):
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await sio.leave_room(sid, message['room'])
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await sio.emit('my_response', {'data': 'Left room: ' + message['room']},
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room=sid)
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@sio.on('close room')
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async def close(sid, message):
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await sio.emit('my_response',
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{'data': 'Room ' + message['room'] + ' is closing.'},
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room=message['room'])
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await sio.close_room(message['room'])
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@sio.on('my_room_event')
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async def send_room_message(sid, message):
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await sio.emit('my_response', {'data': message['data']},
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room=message['room'])
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@sio.on('disconnect request')
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async def disconnect_request(sid):
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await sio.disconnect(sid)
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@sio.on('connect')
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async def test_connect(sid, environ):
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global background_task_started
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if not background_task_started:
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sio.start_background_task(background_task)
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background_task_started = True
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await sio.emit('my_response', {'data': 'Connected', 'count': 0}, room=sid)
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@sio.on('disconnect')
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def test_disconnect(sid, reason):
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print('Client disconnected, reason:', reason)
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if __name__ == '__main__':
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if instrument:
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print('The server is instrumented for remote administration.')
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print(
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'Use the official Socket.IO Admin UI at https://admin.socket.io '
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'with the following connection details:'
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)
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print(' - Server URL: http://localhost:5000')
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print(' - Username:', admin_login['username'])
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print(' - Password:', admin_login['password'])
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print('')
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uvicorn.run(app, host='127.0.0.1', port=5000)
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