delpes

This is probably caused by port 4443: When doing `socket = io.connect('https://example.com', {transports: ['websocket']});` socket.io tries to connect to port 443. After changing the line to: `socket = io.connect('https://example.com:4443', {transports:...

This is an error in your code which we would need to see to locate the error. Somewhere you are doing `this.setState({...})` while `this` is undefined. Try to find out...