It works few seconds but socket hangs up with code 4001 about remote-redux-devtools

[jardicc]

That line should be
this.socket.on('error', (err) => {
instead of
this.socket.on('error', function (err) {

Then I have only one error instead of 2 errors... but problem remains.

[jardicc]

So I changed some default values in devTools.js

SCTransport accepts it

And then hangs up anyway like before... like it wouldn't change anything... but when I trace code with pingTimeoutDisabled it takes different route.

[jardicc]

I believe this happened because ping/pong messages are not compatible.
protocolVersion: 1 sends #1 and #2 as content of ping/pong messages
meanwhile
protocolVersion: 2 sends empty strings only. Therefore it gets timeout. I will use the newer version of remote DevTools same as CLI.