It's not possible to abort an opening websocket connection #205

It's possible to reproduce this situation setting a connectTimeout to something like 15 seconds.
If the server is unresponsive for some reason and this timeout is reached, then there is no way to close this connection, which could be established anyway after the timeout is reached, calling close() or unsubcribe() has no effect because of this code:

                    if (_websocket.canSendMessage) {
                        _debug("invoking .close() on WebSocket object");
                        _websocket.close();
                    }

So, bottom line, you end up with a useless connection that you cannot close.
I think it should be possible to call close() as long as the readyState is 0 or 1 (OPENING or OPEN).
Is there a real reason to do that "if" ?
According to the websocket spec when "the WebSocket connection is not yet established [WSP]
Fail the WebSocket connection and set the readyState attribute's value to CLOSING (2). [WSP]"

NOTE: to simulate an unresponsive server you can just use netcat, e.g. on mac:

nc -l  9999

Thanks