Websocket - InvalidStateError: The connection has not been established yet

Question

I\'m not able to connect Angular2 front-end with Spring\'s websocket back-end.

Spring configuration xml file:

Answer 1

I found a solution to this problem some time ago, I'll post it here also.

The issue is that: npm install sockjs-client downloads sockjs-node instead of client. I hope they will fix it soon.

If you're facing the same issue you should download this file http://cdn.jsdelivr.net/sockjs/1/sockjs.min.js put it in your project and point to it in system-config.ts.