def sendMsg():
    print('send')
    sio.emit('client msg', '我的訊息')

from flask_socketio import SocketIO, emit

app = Flask(__name__)
socketio = SocketIO( app )

clients = {}

class client:
    def __init__(self,sid):
        self.sid = sid
        self.connected = True
    def emit(self, event, data):
        emit(event, data, room=self.sid)

@app.route( '/' )
def hello():
    # return render_template( './ChatApp.html' )
    global clients
    return str(len(clients))

def messageRecived():
    print( 'message was received!!!' )

#Add connected client
@socketio.on( 'connected' )
def client_connected():
    print ("%s connected" % (request.sid))
    global clients
    clients[request.sid]= client(request.sid)
    clients[request.sid].emit('response',        {'sid':request.sid,'connction':clients[request.sid].connected})

@socketio.on( 'client msg' )
def client_message( msg ):
    MSG = str(request.sid) + " 說: "+str(msg)
    print(MSG)
    socketio.emit('response',MSG)

if __name__ == '__main__':
    socketio.run( app, debug = True )