Socket disconnection issue and polling

Question

I have developed one chat application using socket and node js , in start it works perfectly but i have observed that after some interval of time there is one polling error thrown and than socket disconnects.

Error screenshot : https://drive.google.com/file/d/1RWAoqHmpRSR1RkNvE1-XsFtVIvBX24bY/view?usp=sharing

Answer 1

This might fix the issue:

Add this line on server.js:

io.set('transports', ['websocket']);

Add this on client.js:

var socket = io('/',{transports: ['websocket'],upgrade:false});

And do one more thing just use lower socket.io version like 2.0.3