Socket connection in IE 11

[huytran0605]

Currently i'm using SocketIo to make chat application.
It doesn't have any problem in Chrome.
But in IE 11, after few minute, i can't use socket to emit event. It seems socket connection is disconnected.

I searched and found any issue about timeout of tcp/socket in IE 11. But still can't found solution.

I only use websocket for socket.io, prevent them use long-polling. The config socket in client side like below:

import socket from 'socket.io-client';

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

Server i'm using express and socket redis

import socketio from 'socket.io';
import socketioRedis from 'socket.io-redis';


const ioRedis = socketioRedis('redis://localhost:6379');
const io = socketio(server, {
  adapter: ioRedis,
  transports: ['websocket'],
});

[darrachequesne]

Could you enable the debug logs (with localStorage.debug='socket*')? Does it happen when you have several tabs open?

[dev-mraj]

this is happening again and again

[darrachequesne]

It seems the socket is unable to connect. What happens if you enable polling transport? Does it succeed to connect?

Could you please include engine.io's logs with localStorage.debug="socket*,engine*"?

[dev-mraj]

that is now started working but that particular time everytime it was getting timeout..while in all other browers was working..

may be something server side is fishy

[dev-mraj]

also let me know how can i get exact reason for disconnect. because we are getting too much random disconnect while internet is working fine, even when client have high speed internet.

how to debug that issue?

[dev-mraj]

i've to enable polling first for all IE11, polling always workds in IE 11
but not websocket. please suggest solution polling is very slow due to our havy application.

[dev-mraj]

any update?

[Shangxq]

when I refresh 6 times in IE 11

[darrachequesne]

Closed by socketio/engine.io-client@ed48b5d, included in socket.io-client@3.1.2.