Delay of emitting message from frontend to backend

[SAIREDDY54]

I am using flask as backend and reactjs as frontend, on button click I am emitting data from frontend to backend but request is delayed and when I inspect the traffic it shows pending. I am serving the frontend on localhost.

Please look into this.

[SAIREDDY54]

Image link

https://pasteboard.co/t5kiZFR5EtTR.png

[miguelgrinberg]

I can't really tell you much with the information that is visible in your picture, but pending requests are normal, those are part of the long polling protocol used by Socket.IO. As a side note, you should configure your server so that it also supports WebSocket, which performs better than long-polling.

The picture also shows that your browser has multiple connections to the server, which is very likely a bug in your application and not something you intended. Normally each client start a single Socket.IO connection, not many.